CN210701922U

CN210701922U - Convex wrapping point extrusion forming device for plate type spring

Info

Publication number: CN210701922U
Application number: CN201921374668.7U
Authority: CN
Inventors: 李钦聚; 王成
Original assignee: Suzhou Zhaoneng Precision Spring Hardware Co ltd
Current assignee: Suzhou Zhaoneng Precision Spring Hardware Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-06-09
Anticipated expiration: 2029-08-22

Abstract

The utility model provides a plate spring convex wrapping point extrusion forming device, which comprises a base, a lower die component, an upper die component and a cylinder; the top of the lower die component is provided with a workpiece groove, and the upper end of a punching needle of the lower die extends into a punching needle hole at the bottom of the workpiece groove; the lower die is provided with side positioning holes communicated with the workpiece groove on the left side and the right side of the workpiece groove respectively; the upper die assembly comprises an upper die, a convex core block, a side positioning piece, a first fixing plate, a second fixing plate, an upper limiting block, a movable thimble and a top plate; the convex core block is fixed in the core block groove of the upper die, the plurality of side positioning pieces are arranged in the upper die, and the bottoms of the side positioning pieces can extend into the side positioning holes; the two upper limiting blocks are connected with the top plate and the first fixing plate, a movable cavity is formed between the two upper limiting blocks, and the second fixing plate is connected with the air cylinder; an upper thimble groove is formed in the bottom of the second fixing plate, the top of the movable thimble is fixed in the upper thimble groove, and the movable thimble can eject a workpiece. The utility model discloses machining efficiency and machining precision to the protruding package point of plate spring are high.

Description

Convex wrapping point extrusion forming device for plate type spring

Technical Field

The utility model belongs to the technical field of the spring processing equipment, concretely relates to protruding closure point extrusion device of panel type spring.

Background

In the production of the plate-wire spring, convex wrapping points are usually arranged on a plate wire to process, position and support a workpiece, the shape of the convex wrapping points is regular, the requirement on the outer diameter is high, the traditional forming method is obtained by metal cutting, the processing method is long in period, low in efficiency and high in processing cost, and therefore a plate-type spring convex wrapping point extrusion forming device is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a protruding package point extrusion device of panel type spring has solved current plate wire spring processing cycle length, inefficiency, the high problem of processing cost.

The utility model provides a following technical scheme:

a plate-type spring convex wrapped point extrusion forming device comprises a base, a lower die assembly, an upper die assembly and a cylinder;

the lower die assembly comprises a lower die, a lower die punching needle and a lower die return spring, a workpiece groove is formed in the center of the lower die, a punching needle hole is communicated with the bottom of the workpiece groove, the upper end of the lower die punching needle extends into the punching needle hole, and the lower end of the lower die punching needle is fixedly mounted on the base; the lower die is provided with side positioning holes on the left side and the right side of the workpiece groove respectively, and the upper ends of the side positioning holes are communicated with the workpiece groove; the upper end and the lower end of the lower die return spring are respectively fixedly connected with the lower die and the base;

the upper die assembly comprises an upper die, a convex core block, a side positioning piece, a first fixing plate, a second fixing plate, an upper limiting block, a movable thimble and a top plate; the convex core block is fixed in the core block groove in the center of the bottom of the upper die, a plurality of side positioning pieces matched with the side positioning holes are arranged in the upper die, the bottoms of the side positioning pieces can extend into the side positioning holes, and a workpiece can be fixed between the left side positioning piece and the right side positioning piece; the two upper limiting blocks are fixedly connected with the top plate and the first fixing plate, a movable cavity is formed between the two upper limiting blocks, the second fixing plate can be installed in the movable cavity in a vertically moving mode, and the top of the second fixing plate is fixedly connected with a piston rod of the air cylinder; the bottom central authorities of second fixed plate are equipped with thimble groove, first fixed plate go up the mould with the central authorities of protruding type pellet are equipped with thimble hole, well thimble hole and thimble hole down respectively, go up the thimble groove go up the thimble hole well thimble hole with down the thimble hole all is located same vertical line, the top of activity thimble is fixed in go up the thimble inslot, the downside of activity thimble passes in proper order go up the thimble hole well thimble hole with down the thimble hole, the ejecting work piece of activity thimble.

Preferably, the upper die assembly further comprises an upper reset rod and an upper die reset spring, the upper reset rod is installed in the second fixing plate and the first fixing plate, the upper die reset spring is sleeved on the upper reset rod, and the upper die reset spring can reset upwards to the second fixing plate.

Preferably, an upper cushion block is mounted at the bottom of the second fixing plate, and in an initial state, a gap is reserved between the upper cushion block and the first fixing plate in the longitudinal direction.

Preferably, a lower cushion block is installed on the base, and in an initial state, a space is also reserved between the lower cushion block and the lower die.

Preferably, the base is provided with a guide pillar, the lower die is provided with a guide pillar hole, the upper die is provided with a guide pillar sleeve, the guide pillar sleeve is made of elastic rubber, the guide pillar penetrates through the guide pillar hole, and the top of the guide pillar can extend into the guide pillar sleeve.

Preferably, the base is further provided with a reset rod, and the top of the reset rod is provided with a limit ring; the top of the lower die is provided with a limiting groove for accommodating the limiting ring, and the top of the reset rod is limited in the lower die by the limiting ring; the lower die reset spring is sleeved on the reset rod.

Preferably, the air cylinder is connected with the air pump through a reversing valve.

The utility model has the advantages that: the utility model discloses at last mould installation side setting element, set up the side locating hole in the lower mould, the side setting element of the left and right sides stretches into the side locating hole during the compound die, presss from both sides the left and right sides tight fixed with the work piece, realizes the work piece side direction location, improves the positioning accuracy of work piece. Installing a lower die punching needle in the base and the lower die to extrude and form convex points on the workpiece; a movable ejector pin is arranged in the upper die assembly, and the movable ejector pin is pressed down by using an air cylinder to eject a workpiece out from between the side positioning pieces, so that automatic blanking is realized. The device can form the convex hull point at one time, has high processing efficiency and high forming precision, and can meet the positioning requirement of the convex hull point of the plate wire spring.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic front view of the present invention;

fig. 2 is a schematic side view of the present invention;

labeled as: 1. a base; 11. a reset lever; 12. a limiting ring; 13. a guide post; 14. a lower cushion block; 2. a lower die assembly; 21. a lower die; 211. a workpiece groove; 212. punching a pinhole; 213. side positioning holes; 214. a limiting groove; 22. punching a needle on the lower die; 23. a lower die return spring; 3. an upper die assembly; 31. an upper die; 311. a convex core block; 312. a side positioning member; 313. a middle thimble hole; 314. a lower thimble hole; 315. a guide post sleeve; 32. a first fixing plate; 321. an upper thimble hole; 33. a second fixing plate; 331. an upper cushion block; 332. an upper thimble groove; 34. an upper limit block; 35. a movable thimble; 36. a top plate; 37. a movable cavity; 38. an upper reset lever; 39. an upper die return spring; 4. a cylinder; 5. a diverter valve; 6. an air pump; 7. a plate wire material.

Detailed Description

As shown in fig. 1 and 2, the plate-type spring convex-wrapped-point extrusion molding device comprises a base 1, a lower die assembly 2, an upper die assembly 3 and a cylinder 4, wherein the cylinder 4 is connected with an air pump 6 through a reversing valve 5.

The lower die assembly 2 includes a lower die 21, a lower die punch pin 22, and a lower die return spring 23. The center of the top of the lower die 21 is provided with a workpiece groove 211, and the plate wire 7 can be placed in the workpiece groove 211. The bottom of the workpiece groove 211 is communicated with a punching needle hole 212, the upper end of the lower punching needle 22 extends into the punching needle hole 212, the lower end of the lower punching needle 22 is fixedly arranged on the base 1, and the lower punching needle 22 can move downwards when being pressed by the upper die 31 to enable the lower punching needle 22 to be abutted against the plate wire 7 to form a convex wrapping point. The lower die 21 is provided with side positioning holes 213 on the left and right sides of the workpiece recess 211, the upper ends of the side positioning holes 213 communicate with the workpiece recess 211, and the side positioning holes 213 are used for positioning side positioning members of the upper die assembly 3. A reset rod 11 is arranged on the base 1, and a convex limiting ring 12 is arranged at the top of the reset rod 11; the top of the lower die 21 is provided with a limiting groove 214 for accommodating the limiting ring 12, and the top of the reset rod 11 is limited in the lower die 21 by the limiting ring 12 to prevent the lower die 21 from separating from the base 1. The lower die return spring 23 is sleeved on the return rod 11, the upper end and the lower end of the lower die return spring 23 are respectively and fixedly connected with the lower die 21 and the base 1, and the lower die return spring 23 can automatically return to the lower die 21.

The upper die assembly 3 includes an upper die 31, a male core block 311, a side positioning member 312, a first fixing plate 32, a second fixing plate 33, an upper positioning block 34, a movable thimble 35, and a top plate 36. The male core piece 311 is fixed in a core piece slot in the center of the bottom of the upper die 31, a plurality of side positioning pieces 312 matching with the side positioning holes 213 are installed in the upper die 31, and when the upper die is closed, the bottom of the side positioning pieces 312 protrude into the side positioning holes 213, thereby clamping the plate wire 7 from both the left and right sides and positioning the plate wire laterally. The two upper limiting blocks 34 are fixedly connected with the top plate 36 and the first fixing plate 32, a movable cavity 37 is formed between the two upper limiting blocks 34, the top of the second fixing plate 33 is fixedly connected with a piston rod of the air cylinder 4, and the air cylinder 4 can drive the second fixing plate 33 to move up and down in the movable cavity 37. An upper cushion block 331 is installed at the bottom of the second fixing plate 33, and in an initial state, a space is left between the upper cushion block 331 and the first fixing plate 32 in the longitudinal direction, and when the second fixing plate 33 moves downward in the movable cavity 37, the upper cushion block 331 limits the moving stroke of the second fixing plate 33, so that the convex core block 311 is just attached to the surface of the lower mold. Go up mould subassembly 3 and still include release link 38 and mould reset spring 39, go up release link 38 and install in second fixed plate 33 and first fixed plate 32 to in the top of going up release link 38 is fixed in second fixed plate 33, go up mould reset spring 39 suit on last release link 38, go up mould reset spring 39's upper and lower both ends and do not butt second fixed plate 33 and first fixed plate 32, when cylinder 4 does not act on second fixed plate 33, go up mould reset spring 39 and can upwards reset second fixed plate 33.

An upper thimble groove 332 is arranged in the center of the bottom of the second fixing plate 33, an upper thimble hole 321, a middle thimble hole 313 and a lower thimble hole 314 are respectively arranged in the centers of the first fixing plate 32, the upper die 31 and the convex core block 311, the upper thimble groove 332, the upper thimble hole 321, the middle thimble hole 313 and the lower thimble hole 314 are all located on the same vertical line, the top of the movable thimble 35 is fixed in the upper thimble groove 332, the lower end of the movable thimble 35 sequentially penetrates through the upper thimble hole 321, the middle thimble hole 313 and the lower thimble hole 314, and when the cylinder 4 presses down the second fixing plate 33, the bottom end of the movable thimble 35 extends out of the upper die 31, so that processed plate wires are ejected.

Install guide pillar 13 on the base 1, be equipped with the guide pillar hole on the lower mould 21, be equipped with guide pillar cover 315 on last mould 31, guide pillar cover 315 is elastic rubber material, and guide pillar 13 passes the guide pillar hole, and in the guide pillar cover 315 was stretched into at the top of guide pillar 13 during the compound die, utilized a guide pillar 13 location base 1, lower mould 21 and last mould 31, improved location and machining precision.

The base 1 is provided with a lower cushion block 14, in an initial state, a space is also reserved between the lower cushion block 14 and the lower die 21, and the lower cushion block 14 limits the pressing stroke of the lower die 21.

The working process is as follows: the plate wire 7 is put into the workpiece groove 211, the upper die assembly 3 moves downward under the action of external pressure (which may be a driving device such as a pressure cylinder), and the side positioning piece 312 fixes the plate wire 7 between the two side positioning pieces in the downward movement process, so as to realize lateral positioning. With the continuous downward movement of the upper die assembly 3, the lower end surface of the convex core block 311 presses the plate wire 7, so that the plate wire 7 and the lower die 21 continuously move downward after overcoming the elastic force of the lower die return spring 23, the punching pin 22 extrudes the plate wire to one side of the convex core block 311 to form a convex wrapping point, when the lower die 21 moves to the lower cushion block 14, the external pressure is released, so that the upper die assembly 3 and the lower die assembly 2 are separated, the lower die 21 resets under the action of the lower die return spring 23, at the moment, the air pump 6 pumps compressed air into the air cylinder 4, and the formed plate wire 7 is ejected out through the movable ejector pin 35 under the pushing of the piston rod of the air cylinder 4. After ejection, the second fixing plate 33 and the movable ejector pin 35 are retracted and reset under the action of the upper die return spring 39.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A plate-type spring convex wrapped point extrusion molding device is characterized by comprising a base, a lower die assembly, an upper die assembly and a cylinder;

the lower die assembly comprises a lower die, a lower die punching needle and a lower die return spring, a workpiece groove is formed in the center of the top of the lower die, a punching needle hole is communicated with the bottom of the workpiece groove, the upper end of the lower die punching needle extends into the punching needle hole, and the lower end of the lower die punching needle is fixedly mounted on the base; the lower die is provided with side positioning holes on the left side and the right side of the workpiece groove respectively, and the upper ends of the side positioning holes are communicated with the workpiece groove; the upper end and the lower end of the lower die return spring are respectively fixedly connected with the lower die and the base;

2. The apparatus as claimed in claim 1, wherein the upper die assembly further comprises an upper return rod and an upper die return spring, the upper return rod is mounted in the second fixing plate and the first fixing plate, the upper die return spring is sleeved on the upper return rod, and the upper die return spring can upwardly return the second fixing plate.

3. The apparatus as claimed in claim 2, wherein an upper block is installed at the bottom of the second fixing plate, and a gap is formed between the upper block and the first fixing plate in the longitudinal direction in an initial state.

4. The apparatus as claimed in claim 3, wherein the base is provided with a lower block, and the lower block is spaced from the lower die in an initial state.

5. The apparatus as claimed in claim 4, wherein the base is provided with a guide post, the lower die is provided with a guide post hole, the upper die is provided with a guide post sleeve, the guide post sleeve is made of elastic rubber, the guide post passes through the guide post hole, and the top of the guide post can extend into the guide post sleeve.

6. The plate-type spring convex-covered point extrusion molding device as claimed in claim 5, wherein a reset rod is further mounted on the base, and a limit ring is mounted at the top of the reset rod; the top of the lower die is provided with a limiting groove for accommodating the limiting ring, and the top of the reset rod is limited in the lower die by the limiting ring; the lower die reset spring is sleeved on the reset rod.

7. The plate-type spring bump extrusion molding apparatus as claimed in claim 6, wherein the air cylinder is connected to an air pump through a reversing valve.