CN117620009B

CN117620009B - Stretching die and stretching process for steel filter screen

Info

Publication number: CN117620009B
Application number: CN202410110610.0A
Authority: CN
Inventors: 赵龙; 陈关兴
Original assignee: Henan Ultrafiltration Purification Equipment Co ltd
Current assignee: Henan Ultrafiltration Purification Equipment Co ltd
Priority date: 2024-01-26
Filing date: 2024-01-26
Publication date: 2024-05-07
Anticipated expiration: 2044-01-26
Also published as: CN117620009A

Abstract

The invention provides a steel filter screen stretching die and a stretching process thereof, belonging to the technical field of die processing; comprising the following steps: the punch is clamped with the upper die through the punching hole, and the upper die is used for controlling the lifting rod to operate when the upper die moves up and down; the positioning device is used for limiting the direction of the steel filter screen mould and is positioned below the upper mould; the positioning device comprises a sliding rod, one side of the sliding rod is provided with a first rack, one side of the first rack, which is far away from the sliding rod, is meshed with the tooth blocks, one side of the sliding rod is provided with an annular ring, and the outer side of the annular ring is provided with a plurality of tooth blocks. According to the invention, the positioning device and the limiting device are contacted with the surface of the filter screen and synchronously move along with the punch, and the tooth block and the driver are matched for use, so that the limiting block can be driven to limit the outside of the filter screen, the direction of the net can be limited while stamping, and the net forming rate is increased.

Description

Stretching die and stretching process for steel filter screen

Technical Field

The invention relates to the technical field of die processing, in particular to a steel filter screen stretching die and a stretching process thereof.

Background

Steel screens are a type of equipment used for filtration and screening, and are typically made of steel. Such screens can be used in various industrial, manufacturing and handling processes to separate solid particles or other impurities and render liquids or gases purer, and steel screens often involve stretching the steel screen during manufacturing by applying a force to the metal material to increase its length. Meanwhile, a drawing process is used to form filaments of the original metal material (typically strip-or sheet-like metal) into a screen.

In the known prior art, the limitation of the filter screen is fixed, the filter screen is required to be attached to the surface of a workpiece and limited in the direction of the filter screen, and meanwhile, the limitation of the filter screen is only applicable to the bottom of the filter screen and is not applicable to workpieces with different heights on the plane.

At present, all manufactured steel filter screens in the market are round or oval, and as the round steel filter screen stretched products are easy to generate the phenomena of uneven material feeding, easy cracking, easy ultra-wrinkling, uneven surface, insufficient size and the like during molding, the uniform fluidity of the formed and stretched net cannot be ensured, so that the steel filter screen stretched products are not generated in the market at present.

Therefore, the application provides a steel filter screen stretching die and a stretching process thereof to meet the demands.

Disclosure of Invention

The invention aims to solve the technical problems of uneven material feeding, easy cracking, easy wrinkling, uneven surface, inadequately sized and the like of the existing steel filter screen stretching die and the stretching process thereof.

In order to solve the technical problems, the invention provides the following technical scheme:

A steel filter screen stretching die and a stretching process thereof solve the problem that a net cannot form uniform flow, and the steel filter screen stretching die comprises: the punch is clamped with the upper die through a punching hole, the upper die is used for taking through a lifting rod, and the punch is operated when punching is completed; the positioning device is used for limiting the direction of the steel filter screen mould and is positioned below the upper mould; the positioning device comprises a sliding rod, a first rack is arranged on one side of the sliding rod, one side, far away from the sliding rod, of the first rack is meshed with a tooth block, an annular ring is arranged on one side of the sliding rod, a plurality of tooth blocks are arranged on the outer side of the annular ring and distributed at equal intervals in the circumferential direction of the annular ring, a connecting rod is arranged in the annular ring, the other side of the tooth block is meshed with the second rack, one side, far away from the tooth block, of the second rack is connected with a fixed block, a positioning block is arranged on one side of the fixed block, and a limiting block is arranged on one side of the positioning block; and the limiting device is used for limiting the stretching direction of the steel filter screen, and one side of the limiting device, which is far away from the upper die, and one side of the annular ring, which is close to the upper die, are installed.

Preferably, the limiting device comprises a positioning ring, a first fixing ring is arranged in the positioning ring, a sliding block is arranged at the top of the first fixing ring, a second fixing ring is arranged at the upper end of the sliding block, a positioning rod is arranged on one side, far away from the second fixing ring, of the sliding block, the bottom of the positioning rod slides with the positioning ring, a butt joint ring is arranged at the bottom of the positioning ring, a gear is arranged at the bottom of the butt joint ring, and a sliding rod is arranged in the sliding block.

Preferably, the bull stick is installed to one side of slide bar, the gyro wheel is installed in the outside of bull stick, one side of gyro wheel is provided with the action bars, one side of action bars is provided with the actuating lever.

Preferably, the outer side of the operating rod is provided with a second fixed ring and a first fixed ring, the bottom of the first fixed ring is provided with a gear, one side, far away from the first fixed ring, of the gear is meshed with a tooth slot, the outer side of the tooth slot is provided with a first rotary ring, the periphery of the first rotary ring is provided with a plurality of inserting blocks, and the bottom of each inserting block is provided with a supporting rod.

Preferably, a driver is arranged on one side of the supporting rod, one end of the driver is connected with the sliding rod, a swivel II is arranged on one side, far away from the sliding rod, of the driver, and a ring is arranged at the bottom of the supporting rod.

Preferably, one end of the second swivel is connected with the rotating shaft, and the connecting rod is installed on the outer side of the rotating shaft and used for driving the connecting rod to drive the annular ring to rotate up and down.

Preferably, the bottom of the ring is provided with a lower die, the upper end of the lower die is provided with a gasket, the upper end of the lower die is provided with a left fixing hole and a right fixing hole, the upper end of the fixing hole is provided with an upper die, and the top of the upper die is provided with a rubber pad.

A stretching process of a steel filter screen stretching die comprises the following steps: step one, punching and convex hull forming: punching and convex hull forming are carried out on the steel filter screen by using the upper die and the lower die so as to strengthen the strength of the filter screen; in the upper die part, a convex hull is used, and the gap is 1.1-1.2; in the lower die part, when the steel filter screen is stamped, different directions can possibly appear, at the moment, the positioning device is started to limit the stamping point of the steel filter screen, and the orientation of the steel filter screen is limited at the center point of the lower die through the limiting device.

Step two, tearing: tearing the region to be stretched; wherein in the upper die portion, the punch tears the region to be stretched; in the lower die part, the stretching area is limited by a positioning device at the stretched part, and a stripping inner ejector block is added in the ring.

Step three, punching: after punching, the stretching part is not connected with the main material part; wherein, in the upper die part, the stretching part is not connected with the main material part after the punch is used for punching; in the lower die part, the die-cut special-shaped hole is inlaid in the die plate through the ring, the stretching part is not connected with the main material part after die-cutting, the punching deformation is ensured to be within 20% of the aperture range, and the aperture size is limited to +/-20%.

Step four, primary stretching: stretching according to the perimeter size of the steel filter screen product to form a convex hull product with a first ellipse, wherein the height of the first ellipse is lower than that of a standard product; wherein, in the upper mould part, the upper mould plate which is stretched through the positioning device for one time is fixed; in the lower die part, one-time stretching is fixed on the ring through a limiting device, and the height of the floating material is equal to the floating height of other lower dies.

Step five, multi-step stretching: and continuously stretching the first elliptic convex hull product according to the perimeter size of the rectangle to form the steel filter screen.

The beneficial effects are that: the invention provides a steel filter screen stretching die and a stretching process thereof. Compared with the prior art, the method has the following beneficial effects: 1. the positioning device and the limiting device are in contact with the surface of the filter screen and synchronously move along with the punch, the tooth block and the driver are matched for use, the limiting block can be driven to limit the outside of the filter screen, the direction of the net can be limited while stamping, and the net forming rate is increased.

2. The positioning device is used for limiting the stretching of the steel filter screen, preventing the stretching times of the workpiece from being too high or too low, ensuring the uniform flow of the net, and simultaneously further stretching four ends of the net towards the same direction.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.

Fig. 1 is a schematic perspective view of a drawing die of a steel filter screen.

Fig. 2 is a schematic diagram of a three-dimensional side view structure of a drawing die of a steel filter screen.

Fig. 3 is a schematic side view of a punched hole.

Fig. 4 is a schematic side view of the upper die.

Fig. 5 is a schematic top view of the lower die.

Fig. 6 is a schematic diagram of a main view amplifying structure of the lower die.

Fig. 7 is a schematic diagram of a side view and enlarged configuration of the driver.

Fig. 8 is a perspective enlarged schematic view of a swivel.

Fig. 9 is a schematic top view of a swivel.

Fig. 10 is a schematic diagram of a side view of a swivel.

Fig. 11 is a schematic side view of the positioning device.

Fig. 12 is a schematic top view of a tooth block.

Fig. 13 is a schematic top view of a second embodiment of the retaining ring.

Fig. 14 is a schematic bottom view of the retaining ring.

Fig. 15 is a schematic view of a three-dimensional enlarged structure of the restriction device.

[ Reference numerals ]

11. A lower die; 12. an upper die; 13. punching a hole; 14. lifting a rod; 15. a punch; 16. a gasket; 17. a fixing hole; 18. inserting blocks; 19. a support rod; 110. a driver; 111. a swivel I; 112. tooth slots; 113. a loop; 114. a second swivel; 2. a positioning device; 22. an annular ring; 23. tooth blocks; 24. a positioning block; 25. a fixed block; 26. a second rack; 27. a limiting block; 28. a slide bar; 29. a first rack; 210. a rotating shaft; 211. a connecting rod; 3. a restriction device; 33. a first fixed ring; 34. a positioning ring; 35. a gear; 36. a docking collar; 37. a positioning rod; 38. a second fixing ring; 39. a sliding block; 310. a roller; 311. a driving rod; 312. a slide bar; 313. a rotating rod; 314. and an operation lever.

While particular structures and devices are shown in the drawings to enable a clear implementation of embodiments of the invention, this is for illustrative purposes only and is not intended to limit the invention to the particular structures, devices and environments, which may be modified or adapted by those of ordinary skill in the art, as desired, and which remain within the scope of the appended claims.

Detailed Description

The invention provides a steel filter screen stretching die and a stretching process thereof, which are described in detail below with reference to the accompanying drawings and specific embodiments. While the invention has been described herein in terms of preferred embodiments, the following embodiments are presently preferred, as well as other alternatives to those of skill in the art; and the accompanying drawings are only for the purpose of describing embodiments more specifically and are not intended to limit the invention specifically.

According to the embodiment of the application, the problem that the surface of the filter screen can be stretched and polished only after the surface of the filter screen is stamped by the positioning rod, and the problem of large secondary manufacturing is solved by providing fluidity, simultaneously, the pore size ratio is different, and the positioning rod cannot limit and position the periphery of the filter screen in the workpiece, when the filter screen is stamped by the punch, the stretching direction is limited when the surface of the contact workpiece is stamped by the punch, and the uniform fluidity of the filter screen is changed by the limiting device during stretching.

As shown in fig. 1-15, an embodiment of the present invention provides a steel screen drawing die, comprising: the punch 15, the punch 15 engages with upper die 12 through the punching hole 13, the upper die 12 is used for taking through the lifting rod 14, operate when the punch 15 punches and finishes; and the positioning device 2 is used for limiting the direction of the steel filter screen die, and the positioning device 2 is positioned below the upper die 12.

The positioning device 2 comprises a sliding rod 28, a first rack 29 is arranged on one side of the sliding rod 28, one side, far away from the sliding rod 28, of the first rack 29 is meshed with a tooth block 23, an annular ring 22 is arranged on one side of the sliding rod 28, a plurality of tooth blocks 23 are arranged on the outer side of the annular ring 22, the plurality of tooth blocks 23 are distributed at equal intervals along the circumferential direction of the annular ring 22, a connecting rod 211 is arranged in the annular ring 22, the other side of the tooth block 23 is meshed with a second rack 26, one side, far away from the tooth block 23, of the second rack 26 is connected with a fixed block 25, a positioning block 24 is arranged on one side of the fixed block 25, and a limiting block 27 is arranged on one side of the positioning block 24.

When an operator presses the die required for punching the filter screen through the punch 15 after placing the die at the bottom of the upper die 12, the punch 15 drives the rotating shaft 210 to rotate clockwise through the driver 110 to prevent the filter screen from flowing unevenly, then the rotating shaft 210 drives the connecting rod 211 to rotate clockwise, and then the connecting rod 211 drives the tooth block 23 fixed on the outer side of the annular ring 22 to rotate together, and the tooth block 23 is meshed with the tooth bar 26, so that the tooth bar 26 is driven to slide up and down under the drive of the tooth block 23 when the tooth block 23 rotates clockwise, and the driving positioning block 24 and the limiting block 27 are driven to rotate together when the tooth block 23 slides up and down to limit the mobility of the filter screen, so that the filter screen is ensured to punch in one direction during punching.

And the limiting device 3 is used for limiting the stretching direction of the steel filter screen, and one side of the limiting device 3 away from the upper die 12 and one side of the annular ring 22 close to the upper die 12 are mounted.

In a further embodiment, the limiting device 3 includes a positioning ring 34, a first fixing ring 33 is installed in the positioning ring 34, a sliding block 39 is installed at the top of the first fixing ring 33, a second fixing ring 38 is installed at the upper end of the sliding block 39, a positioning rod 37 is installed at one side, far away from the second fixing ring 38, of the sliding block 39, the bottom of the positioning rod 37 slides with the positioning ring 34, a docking ring 36 is installed at the bottom of the positioning ring 34, a gear 35 is installed at the bottom of the docking ring 36, and a sliding rod 312 is installed in the sliding block 39.

A rotating rod 313 is arranged on one side of the sliding rod 312, a roller 310 is arranged on the outer side of the rotating rod 313, an operating rod 314 is arranged on one side of the roller 310, and a driving rod 311 is arranged on one side of the operating rod 314

The driving rod 311 can drive the first fixing ring 33 and the second fixing ring 38 to rotate in the same direction under the pushing of the driving rod 311.

The outer side of the operating rod 314 is provided with a second fixed ring 38 and a first fixed ring 33, the bottom of the first fixed ring 33 is provided with a gear 35, one side, far away from the first fixed ring 33, of the gear 35 is meshed with a tooth slot 112, the outer side of the tooth slot 112 is provided with a first rotary ring 111, the periphery of the first rotary ring 111 is provided with a plurality of inserting blocks 18, and the bottom of the plurality of inserting blocks 18 is provided with a supporting rod 19.

The rotary ring one 111 can be driven to rotate clockwise through the use of the plurality of inserting blocks 18, the tooth groove 112 is driven to rotate under the clockwise rotation of the rotary ring one 111, and meanwhile, the gear 35 meshed with the tooth groove 112 is driven to rotate under the rotation of the tooth groove 112, so that the positioning ring 34 can be driven to rotate, and meanwhile, the driving rod 311 is driven to rotate under the driving of the positioning ring 34.

One side of the support rod 19 is provided with a driver 110, one end of the driver 110 is connected with the sliding rod 28, one side of the driver 110 away from the sliding rod 28 is provided with a swivel joint two 114, and the bottom of the support rod 19 is provided with a ring 113.

The driver 110 drives the connecting rod 211 to rotate, so that the connecting rod 211 can drive the tooth block 23 to rotate up and down in a limiting manner on the first rack 29, and meanwhile, the sliding rod 28 arranged on the outer side of the first rack 29 is used for providing supporting force when the first rack 29 is used for limiting the rotation of the tooth block 23.

One end of the second swivel 114 is connected with a rotating shaft 210, and a connecting rod 211 is installed on the outer side of the rotating shaft 210 and used for driving the connecting rod 211 to drive the annular ring 22 to rotate up and down.

The bottom of the ring 113 is provided with a lower die 11, the upper end of the lower die 11 is provided with a gasket 16, the upper end of the lower die 11 is provided with a left and right opposite fixing hole 17, the upper end of the fixing hole 17 is provided with an upper die 12, and the top of the upper die 12 is provided with a rubber gasket.

The rubber pad can reduce the phenomenon that the punch 15 rubs when stamping the die, and the service life of the upper die 12 is prolonged.

A stretching process of a steel filter screen stretching die comprises the following steps: step one, punching and convex hull forming: punching and convex wrapping are carried out on the steel filter screen by using the upper die 12 and the lower die 11 so as to strengthen the strength of the filter screen; wherein, in the upper die 12 part, a convex hull is used, and the gap is 1.2; in the lower die 11 part, there is a possibility that different directions will occur when the steel screen is punched, at which time the positioning means 2 is activated to limit the punching point of the steel screen and the orientation of the steel screen is limited at the center point of the lower die 11 by the limiting means 3.

Step two, tearing: tearing the region to be stretched; wherein, in the upper die 12 part, the punch 15 tears the region to be stretched; in the lower die 11, the stretched part is limited by the positioning device 2, the stripping inner jacking block is added in the ring 113, and lubricating oil is smeared on the outer layer of the filter screen, so that the lubrication can be performed, and meanwhile, when the lower die is torn, the gap generated by the die is limited within 0.9 mm.

Step three, punching: after punching, the stretching part is not connected with the main material part; wherein, in the upper die 12 part, the punch 15 cuts the drawing part and is not connected with the main material part; in the lower die 11, a die-cut special-shaped hole is inlaid in a die plate through a ring 113, after die-cutting, a stretching part is not connected with a main material part, the deformation of the die-cut hole is ensured to be within 20% of the aperture range, and the size of the aperture is limited to +/-20%.

Step four, primary stretching: stretching according to the perimeter size of the steel filter screen product to form a convex hull product with a first ellipse, wherein the height of the first ellipse is lower than that of a standard product; wherein, in the upper die 12 part, the primary stretching is fixed by the upper die plate of the positioning device 2; in the lower die 11 portion, one stretch is fixed to the ring 113 by the restriction device 3, and the float height is equal to the float height of the other lower die 11.

Step five, multi-step stretching: continuously stretching the first elliptic convex hull product according to the perimeter size of the rectangle to form a steel filter screen, wherein in the upper die part of the step of stamping the filter screen, a punch 15 is fixedly arranged on a stamping hole 13 in an upper die 12, and a profiling cavity is arranged on the stamping hole 13; in the lower die 11 portion of the punching step, the ring 113 is fitted to the lower die 11, and the ring 113 is a contoured cavity. In the upper die 12 part of the blanking step, the semi-finished product cutting punch 15 cuts out semi-finished products and the scrap punch 15 cuts off useless scraps, in the lower die 11 part of the blanking step, the semi-finished product is cut off and falls to the bottom of the annular ring 113, and meanwhile, an ejection block arranged in the annular ring 113 ejects the filter screen.

The invention is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the invention. In the above description of the preferred embodiments of the invention, specific details are set forth in order to provide a thorough understanding of the invention, and the invention will fully be understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail so as not to unnecessarily obscure aspects of the present invention.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. A steel screen drawing die, comprising:

the punch (15) is clamped with the upper die (12) through the punching hole (13), the upper die (12) is used for taking through the lifting rod (14), and the punch (15) is operated when punching is completed;

The positioning device (2) is used for limiting the direction of the steel filter screen die, and the positioning device (2) is positioned below the upper die (12);

The positioning device (2) comprises a sliding rod (28), a first rack (29) is arranged on one side of the sliding rod (28), one side, away from the sliding rod (28), of the first rack (29) is meshed with a tooth block (23), an annular ring (22) is arranged on one side of the sliding rod (28), a plurality of tooth blocks (23) are arranged on the outer side of the annular ring (22), the plurality of tooth blocks (23) are distributed at equal intervals in the circumferential direction of the annular ring (22), a connecting rod (211) is arranged in the annular ring (22), the other side of the tooth block (23) is meshed with a second rack (26), one side, away from the tooth block (23), of the second rack (26) is connected with a fixed block (25), a positioning block (24) is arranged on one side of the fixed block (25), and a limiting block (27) is arranged on one side of the positioning block (24).

The limiting device (3) is used for limiting the stretching direction of the steel filter screen, and one side of the limiting device (3) away from the upper die (12) and one side of the annular ring (22) close to the upper die (12) are installed;

The limiting device (3) comprises a positioning ring (34), a first fixed ring (33) is arranged in the positioning ring (34), a sliding block (39) is arranged at the top of the first fixed ring (33), a second fixed ring (38) is arranged at the upper end of the sliding block (39), a positioning rod (37) is arranged at one side, far away from the second fixed ring (38), of the sliding block (39), the bottom of the positioning rod (37) slides with the positioning ring (34), a butt joint ring (36) is arranged at the bottom of the positioning ring (34), a gear (35) is arranged at the bottom of the butt joint ring (36), and a sliding rod (312) is arranged in the sliding block (39); a rotating rod (313) is arranged on one side of the sliding rod (312), a roller (310) is arranged on the outer side of the rotating rod (313), an operating rod (314) is arranged on one side of the roller (310), and a driving rod (311) is arranged on one side of the operating rod (314); a fixed ring II (38) and a fixed ring I (33) are arranged on the outer side of the operating rod (314), a gear (35) is arranged at the bottom of the fixed ring I (33), one side, far away from the fixed ring I (33), of the gear (35) is meshed with a tooth groove (112), a rotating ring I (111) is arranged on the outer side of the tooth groove (112), a plurality of inserting blocks (18) are arranged on the periphery of the rotating ring I (111), and a supporting rod (19) is arranged at the bottom of each inserting block (18); one side of bracing piece (19) is provided with driver (110), the one end of driver (110) is connected with slide bar (28), one side that slide bar (28) were kept away from to driver (110) is provided with swivel two (114), ring (113) are installed to the bottom of bracing piece (19).

2. The steel filter screen stretching die as claimed in claim 1, wherein one end of the swivel joint two (114) is connected with a rotating shaft (210), and a connecting rod (211) is installed on the outer side of the rotating shaft (210) and is used for driving the connecting rod (211) to drive the annular ring (22) to rotate up and down.

3. The steel filter screen stretching die according to claim 1, wherein a lower die (11) is mounted at the bottom of the ring (113), a gasket (16) is arranged at the upper end of the lower die (11), left and right opposite fixing holes (17) are formed in the upper end of the lower die (11), an upper die (12) is arranged at the upper end of the fixing holes (17), and a rubber pad is mounted at the top of the upper die (12).