1. A bending press system, comprising:
a base;
a slider disposed above the base and moving downwardly toward the base or moving upwardly from the base;
a curvature die mounted at the base and the slider, and integrated by descent of the slider such that a pipe member inserted in the curvature die is formed to have a predetermined curvature; and
a pair of clamping units disposed to be rotatable by a predetermined angle corresponding to the curvature die at both sides of the base, and to clamp both end portions of the pipe member,
wherein each clamping unit comprises:
a clamping die fixed on the base and including a space formed therein;
a clamping block positioned in the space of the clamping die, mounted at the clamping die to be rotatable by the predetermined angle through a rotation shaft, and including a receiving end, formed to face the curvature die, and a supporting end formed at a lower portion thereof;
a clamping cylinder mounted at an upper portion of the clamping block to face the receiving end and including an operating rod moving forward or rearward by hydraulic pressure;
a clamper mounted at a front end of the operating rod, to clamp an end portion of the pipe member inserted between the clamper and the receiving end by pressing the end portion of the pipe member together with the receiving end; and
a return spring mounted corresponding to a surface of the supporting end in the space of the clamping die, and applying restoring force to the supporting end so as for the clamping block to rotate to an original position of the clamping block,
wherein the return spring comprises a rod and a roller mounted at a front end of the rod, and slidably contacts with the surface of the supporting end through the roller.
2. The bending press system of claim 1, wherein the curvature die comprises:
a lower die mounted on the base and including a lower curvature forming surface having the predetermined curvature along a width direction thereof and formed on an upper surface thereof; and
an upper die mounted on a lower surface of the slider and including an upper curvature forming surface corresponding to the lower curvature forming surface, having the predetermined curvature along a width direction thereof, and formed on a lower surface thereof.
3. The bending press system of claim 1, wherein a receiving surface for receiving the pipe member is formed on the receiving end, and contact protrusions are formed on the receiving surface.
4. The bending press system of claim 1, wherein a receiving surface for receiving the pipe member is formed on the receiving end and is formed as a scratched surface.
5. The bending press system of claim 1, wherein contact protrusions are formed on a lower surface of the clamper.
6. The bending press system of claim 1, wherein a lower surface of the clamper is formed as a scratched surface.
7. The bending press system of claim 1, wherein the return spring is a hydraulic pressure spring.
8. A bending press system, comprising:
a base;
a slider disposed above the base and moving downwardly toward the base or moving upwardly from the base;
a curvature die including a lower die mounted on the base and an upper die mounted on a lower surface of the slider, wherein the lower die and the upper die are integrated by descent of the slider such that a pipe member inserted between the lower die and the upper die is formed to have a predetermined curvature; and
a pair of clamping units to clamp both end portions of the pipe member, each of the pair clamping units comprising a clamping die fixed on both sides of the base and including a space formed therein, a clamping block positioned in the space of the clamping die, mounted at the clamping die to be rotatable by a predetermined angle through a rotation shaft, and including a receiving end formed to face the curvature die and a supporting end formed at a lower portion thereof, a clamping cylinder mounted at an upper portion of the clamping block to face the receiving end and including an operating rod moving forward or rearward by hydraulic pressure, a clamper mounted at a front end of the operating rod to clamp an end portion of the pipe member inserted between the clamper and the receiving end by pressing the end portion of the pipe member together with the receiving end, and a return spring mounted corresponding to a surface of the supporting end in the space of the clamping die and applying restoring force to the supporting end so as for the clamping block to rotate to an original position of the clamping block,
wherein the return spring comprises a rod and a roller mounted at a front end of the rod, and slidably contacts with the surface of the supporting end through the roller.
9. The bending press system of claim 8, wherein a lower curvature forming surface having the predetermined curvature along a width direction of the lower die is formed on an upper surface of the lower die.
10. The bending press system of claim 8, wherein an upper curvature forming surface having the predetermined curvature along a width direction of the upper die is formed on a lower surface of the upper die.
11. The bending press system of claim 8, wherein the return spring is a hydraulic pressure spring.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A valve assembly configured for a clean-in-place operation, the valve assembly comprising:
a valve body including:
a lower surface;
a valve seat extending into the valve body from the lower surface;
an inner cavity extending into the valve body from the valve seat;
an inlet extending through the valve body and into the inner cavity, the inlet being spaced from the valve seat;
a shaft extending through the valve body for reciprocal movement with respect thereto;
a stopper connected to one end of the shaft for movement between a normally closed position wherein the stopper sealingly engages the valve seat and an open position wherein the stopper is spaced from the valve seat to permit cleaning fluid to enter and exit the inner cavity only between the valve seat and stopper;
an actuator connected to the valve body, the actuator including a plunger adapted for contacting an opposite end of the shaft for moving the stopper toward the open position when activated; and
a stop valve operatively associated with the inlet, the stop valve being in a normally closed position for preventing fluid from exiting through the inlet such that cleaning fluid only enters and exits the inner cavity through the valve seat when the plunger is in the open position, the stop valve being connectable to a source of pressurized air to thereby open the stop valve and cause air or other gas to enter the inner cavity with sufficient pressure to move the stopper toward the open position.
2. A valve assembly according to claim 1, wherein the shaft is spaced from the plunger when the stop valve is opened by the source of pressurized air.
3. A valve assembly according to claim 2, wherein the shaft is in contact with the plunger when the actuator is activated.
4. A valve assembly according to claim 1, and further comprising a compression spring connected between the shaft and the valve body for biasing the stopper toward the closed position.
5. A valve assembly according to claim 4, and further comprising a first spring seat connected to the shaft for receiving one end of the compression spring.
6. A valve assembly according to claim 5, wherein the valve body includes an upper surface and a depression extending into the valve body from the upper surface, the depression being coaxial with the shaft for receiving an opposite end of the compression spring.
7. A valve assembly according to claim 6, and further comprising a second spring seat located in the depression, the opposite end of the compression spring being received on the second spring seat.
8. A valve assembly according to claim 7, wherein the shaft includes an annular groove located between the stopper and the opposite end of the shaft, the first spring seat being mounted in the annular groove.
9. A valve assembly according to claim 8, and further comprising a platform connected to the valve body, with the actuator being mounted to the platform.
10. A valve assembly according to claim 9, and further comprising a plurality of spacers positioned between the platform and the valve body to thereby space the platform from the valve body.
11. A valve assembly according to claim 5, wherein the shaft includes an annular groove located between the stopper and the opposite end of the shaft, the first spring seat being mounted in the annular groove.
12. A valve assembly according to claim 1, and further comprising a platform connected to the valve body, with the actuator being mounted to the platform.
13. A valve assembly according to claim 12, and further comprising a plurality of spacers positioned between the platform and valve body to thereby space the platform from the valve body.
14. A valve assembly according to claim 13, wherein the shaft is spaced from the plunger when the stop valve is opened by the source of pressurized air.
15. A valve assembly according to claim 14, wherein the shaft is in contact with the plunger when the actuator is activated.
16. A valve assembly according to claim 1, wherein the inlet extends at an acute angle with respected to a central axis of the valve body.
17. A valve assembly according to claim 1, wherein the inner cavity is conical in shape.
18. A valve assembly configured for a clean-in-place operation, the valve assembly comprising:
a valve body including:
a lower surface;
an upper surface spaced from the lower surface;
a valve seat extending into the valve body from the lower surface;
an inner cavity extending into the valve body from the valve seat;
a shaft extending through the valve body for reciprocal movement with respect thereto;
a stopper connected to one end of the shaft for movement between a normally closed position wherein the stopper sealingly engages the valve seat and an open position wherein the stopper is spaced from the valve seat to permit cleaning fluid to enter and exit the inner cavity; and
a biasing member located outside of the inner cavity and connected to the shaft to thereby bias the stopper toward the normally closed position.
19. A valve assembly according to claim 18, and further comprising a platform connected to the valve body via a plurality of spacers positioned between the platform and valve body to thereby space the platform from the valve body, the actuator being removably mounted to the platform.
20. A clean-in-place method comprising:
connecting a clean-in-place valve to a conduit of a processing system, the valve including an inner cavity with a valve seat, and a stopper movable between a closed position in sealing engagement with the valve seat and an open position where the inner cavity is in fluid communication with the conduit;
flowing cleaning fluid through the conduit;
moving the stopper to the open position to cause the fluid to flow only from the conduit around the stopper, past the valve seat and into the inner cavity to thereby clean the stopper, valve seat and inner cavity;
stopping the flow of cleaning fluid through the conduit;
moving the stopper to the closed position;
sending pressurized drying fluid into the inner cavity to thereby move the stopper to the open position and supply drying fluid to the inner cavity, the valve seat, the stopper and at least the conduit; and
stopping the flow of pressurized drying fluid to thereby move the stopper to the closed position.