CN103495666B - Spring clamp progressive die - Google Patents

Abstract

The invention provides a progressive die for a spring clamp, and belongs to the technical field of dies. It has solved the mould production efficiency low grade technical problem of current spring clamp. A spring clamp progressive die comprises an upper die base, a lower base plate and a plurality of guide pillars arranged on the upper die base, wherein a corner cutting insert, a first bump insert, a punching insert, a first stretching insert, a second bump insert, a second stretching insert, a first waste insert, a second waste insert, a bending forming insert and a material breaking insert are sequentially arranged on the lower base plate, a first elastic pressing plate, a forming convex block and a second elastic pressing plate are sequentially arranged on the upper die base, the first elastic pressing plate is matched with the corner cutting insert, the first bump insert, the punching insert, the first stretching insert, the second bump insert, the second stretching insert, the first waste insert and the second waste insert, the forming convex block is matched with the bending forming insert, and the second elastic pressing plate is matched with the material breaking insert. The invention has the advantages of high efficiency, stable quality and the like.

Description

A spring clip progressive die

technical field

The invention belongs to the technical field of moulds, and relates to a spring clip progressive die.

Background technique

The sofa is a commonly used fixture. The spring clips are respectively fixed to the two ends of the spring, and then the spring clips are fixed on the bracket of the sofa. A large number of spring clips are needed in the production process of the sofa. Because the traditional spring clip preparation mold requires multiple In the process, multiple molds are divided into multiple times for blanking, pre-stretching top convex, stretching convex and bending forming, etc., which is time-consuming and laborious, and the quality is unstable, often with large dimensional deviations, bumps or insufficient bending. And so on, the installation is more laborious, and the yield is lower.

For this reason, the applicant designs this progressive die in order to improve the stability of the spring clip, the production efficiency and reduce the cost.

Contents of the invention

The object of the present invention is to provide a spring clip progressive die for the above-mentioned problems existing in the prior art. The technical problem to be solved by the present invention is to improve the production efficiency of the spring clip.

The purpose of the present invention can be achieved through the following technical solutions: a spring clamp progressive die, comprising an upper die base, a lower base plate and several guide posts arranged on the upper die base, characterized in that the lower base plate is sequentially There are corner cutting inserts, first bump inserts, punch inserts, first stretch inserts, second bump inserts, second stretch inserts, first waste inserts, second waste inserts Inserts, bending molding inserts and cutting inserts, the upper die base is provided with a first spring pressing plate, a forming bump and a second spring pressing plate in sequence, and the first spring pressing plate is connected with the corner cutting insert, the second spring pressing plate A bump insert, a punching insert, a first stretch insert, a second bump insert, a second stretch insert, a first scrap insert and a second scrap insert cooperate, and the forming bump Cooperate with the bending forming insert, and the second resilient pressing plate cooperates with the cutting insert.

The working principle of the present invention is: the spring clamp includes two end positioning through holes, a middle positioning through hole, two side positioning through grooves, a plurality of pressing bumps and two positioning retaining ears for fixing the spring, and the plate Shaped raw materials are inserted from one end of the mold, and the raw materials are smoothly extended from one end of the mold through the transmission mechanism, and the raw materials are carried out in turn as follows:

Cutting corners: cut off the corners of the raw material to get the spring clip blank of the required shape, and cut off the inserts by the corners to complete;

Pre-punching bumps: Protrude at the position of the two end positioning through holes and one middle positioning through hole to prevent the deformation of the raw material during punching, and it is completed by the first bump insert;

Punching: Punch two end positioning through holes, one middle positioning through hole and the positioning through groove on the side of the spring clip, which is completed by punching inserts;

Then pre-stretch, bump and stretch the positioning lugs, which are respectively completed by the first stretching insert, the second bump insert and the second stretching insert;

Removal of waste: removal of punching waste and removal of punching waste, done by the first waste insert and the second waste insert;

Bending forming: the billet is bent and formed by bending forming inserts

Finally, the long blank is cut to the length of a single spring clip to complete the preparation of the spring clip;

The above processes are all completed through the cooperation of each insert with the first elastic pressing plate, the forming bump and the second elastic pressing plate, and the preparation of the spring clip is completed at one time. Only one person is required to guard and operate, and its efficiency is 5 times that of the traditional preparation method. On, and the quality of the spring clip is stable and the size is accurate.

In the above-mentioned spring clamp progressive die, several elastic buffers are arranged on the upper die base.

In the above-mentioned a kind of spring clamp progressive die, the elastic buffer is a cylinder, the cylinder body of the cylinder is fixedly connected with the upper mold base, and the first elastic pressing plate and the second elastic pressing plate are connected with the cylinder body. Lower connection. These air cylinders cushion the first spring plate and the second spring plate so that the workpiece is not damaged.

In the above-mentioned spring clip progressive die, a first spring pressing seat and a second spring pressing seat are respectively provided between the first spring pressing plate, the second spring pressing plate and the upper mold base, and the lower end of the upper mold base is fixed There is an upper backing plate, and an upper splint is arranged between the first spring pressing seat and the second spring pressing seat and the upper backing plate. The first spring pressing seat and the second spring pressing seat respectively support the first spring pressing plate and the second spring pressing plate, and the upper backing plate is used for adjusting the position between the upper mold seat and the first spring pressing plate and the second spring pressing plate.

In the above-mentioned spring clip progressive die, the lower end of the lower base plate is provided with a support frame, the upper end of the lower base plate is provided with a lower backing plate, the upper end of the lower backing plate is provided with a lower splint, and the corners are cut and inlaid. block, first bump insert, punch insert, first stretch insert, second bump insert, second stretch insert, first scrap insert, second scrap insert, bend forming insert Blocks and cutting inserts are all arranged on the lower splint.

In the above-mentioned spring clip progressive die, a number of floating material pins are evenly arranged on the lower clamping plate, and the floating material pins are arranged on both sides of the lower clamping plate. The raw material and the blank before forming are placed on the floating material pin, and the raw material and the blank before forming are pushed backward along the mold on the floating material pin at a constant speed, and an elastic rubber block is arranged between the floating material pin and the bottom plate.

In the above-mentioned progressive die for spring clips, a baffle is provided between the bending forming insert and the cutting insert. The baffle is used to position the blank before cutting, so that the size is accurate during cutting.

In the above-mentioned spring clamp progressive die, the guide post is a GP25 guide post, and the upper end of the upper die base is provided with a cover plate.

In the above-mentioned progressive die for spring clips, the first bump insert and the punching insert are of an integral structure.

Compared with the prior art, the present invention has the following advantages:

1. This progressive mold completes the preparation of the spring clip at one time, and only one person is required to guard and operate it. Its efficiency is more than 5 times that of the traditional preparation method, and the quality of the spring clip is stable and the size is accurate.

2. There are several air cylinders on the upper mold base. The cylinder body of the cylinder is firmly connected with the upper mold base. Both the first elastic pressing plate and the second elastic pressing plate are connected to the lower end of the cylinder to control the cylinder. The first elastic pressing plate and the second elastic pressing plate The board is controlled to complete the power control of all processes except bending and forming.

Description of drawings

Fig. 1 is a schematic structural view of the upper die of the progressive die.

Fig. 2 is a structural schematic diagram of the lower die of the progressive die.

Fig. 3 is the position distribution diagram of the progressive die.

Fig. 4 is a structural schematic diagram of the spring clip.

In the figure, 1a, corner cutting insert; 1b, first bump insert; 1c, punching insert; 1d, first stretching insert; 1e, second bump insert; 1f, second pulling insert Stretching insert; 1g, first waste insert; 1h, second waste insert; 1i, bending forming insert; 1j, cutting insert; 21, cover plate; 22, upper mold seat; 23, upper backing plate ; 24, the upper splint; 25, the first spring pressure seat; 26, the second spring pressure seat; 27, the first spring pressure plate; 28, the second spring pressure plate; ; 33, the bottom plate; 34, the support frame; 4, the floating material pin; 5, the baffle; 6, the elastic buffer;

Detailed ways

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, a kind of spring clamp progressive die comprises upper mold base 22, lower base plate 33 and several guide posts 7 arranged on the upper mold base 22, and the lower base plate 33 is arranged successively Corner cutting insert 1a, first bump insert 1b, punch insert 1c, first stretch insert 1d, second bump insert 1e, second stretch insert 1f, first scrap insert block 1g, the second scrap insert 1h, the bending molding insert 1i and the cut-off insert 1j, the upper mold base 22 is provided with a first spring pressing plate 27, a forming bump 29 and a second spring pressing plate 28 in sequence, and the first spring pressing Plate 27 and corner cutting insert 1a, first bump insert 1b, punching insert 1c, first stretch insert 1d, second bump insert 1e, second stretch insert 1f, first The scrap insert 1g cooperates with the second scrap insert 1h, the forming protrusion 29 cooperates with the bent forming insert 1i, and the second elastic pressing plate 28 cooperates with the cutoff insert 1j.

Upper die base 22 is provided with some elastic buffers 6, elastic buffers 6 are cylinders, the cylinder body of the cylinder is connected with upper die base 22, and the first elastic pressure plate 27 and the second elastic pressure plate 28 are all connected with the lower end of the cylinder. These air cylinders buffer the first elastic pressing plate 27 and the second elastic pressing plate 28 so that the workpiece is not damaged.

The first elastic pressing plate 27 and the second elastic pressing plate 28 are respectively provided with the first elastic pressing seat 25 and the second elastic pressing seat 26 between the upper die base 22, and the lower end of the upper die base 22 is fixedly provided with an upper backing plate 23, and the first elastic pressing base 25 and the second spring pressure seat 26 and the upper backing plate 23 are provided with an upper splint 24, the first spring pressure seat 25 and the second spring pressure seat 26 respectively support the first spring pressure plate 27 and the second spring pressure plate 28, and the upper backing plate 23 is used To adjust the position between the upper mold base 22 and the first elastic pressing plate 27 and the second elastic pressing plate 28, the lower end of the lower base plate 33 is provided with a support frame 34, the upper end of the lower base plate 33 is provided with a lower backing plate 31, and the upper end of the lower backing plate 31 is provided with There are lower splints 32, corner cutting inserts 1a, first bump inserts 1b, punching inserts 1c, first stretching inserts 1d, second bump inserts 1e, second stretching inserts 1f, The first scrap insert 1g , the second scrap insert 1h , the bending molding insert 1i and the broken insert 1j are all arranged on the lower splint 32 .

A number of floating material pins 4 are evenly arranged on the lower clamping plate 32, and the floating material pins 4 are arranged on both sides of the lower clamping plate 32. 4. Move backwards at a constant speed along the mold. An elastic rubber block is provided between the floating material pin 4 and the lower bottom plate 33. A baffle 5 is provided between the bending molding insert 1i and the cutting insert 1j. The baffle 5 Position the blank before cutting to make the size accurate during cutting.

The guide post 7 is a GP25 guide post 7, the upper end of the upper die base 22 is provided with a cover plate 21, and the first bump insert 1b and the punching insert 1c are of an integrated structure.

The working principle of the present invention is: the spring clip 8 comprises two end positioning through holes, a middle positioning through hole, two side positioning through grooves, a plurality of compression bumps and two positioning retaining ears for fixing the spring, The plate-shaped raw material is inserted from one end of the mold, and the raw material is stably extended from one end of the mold through the transmission mechanism, and the raw material is subjected to the following procedures in sequence:

Cutting corners: cut off the corners of the raw material to obtain the blank of the spring clip 8 of the desired shape, and complete by cutting off the insert 1a at the corners;

Pre-punching bumps: protrude at the position of two end positioning through holes and one middle positioning through hole to prevent deformation of raw materials during punching, and it is completed by the first bump insert 1b;

Punching: punching two end positioning through holes, one middle positioning through hole and the positioning through groove on the side of the spring clip 8, completed by the punching insert 1c;

Then pre-stretching, bumping and stretching are carried out on the positioning retaining ear, which are respectively completed by the first stretching insert 1d, the second bump insert 1e and the second stretching insert 1f;

Removal of waste: removal of punching waste and removal of punching waste, completed by the first waste insert 1g and the second waste insert 1h;

Bending forming: the blank is bent and formed by the bending forming insert 1i

Finally, the strip blank is cut to the length of a single spring clip 8 to complete the preparation of the spring clip 8;

The above processes are all completed by the cooperation of each insert with the first elastic pressing plate 27, the forming protrusion 29 and the second elastic pressing plate 28, and the preparation of the spring clip 8 is completed at one time, only one person is required to guard and operate, and its efficiency is higher than that of the traditional preparation method. More than 5 times of that, and the quality of the spring clip 8 is stable and the size is accurate.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (8)

1. a kind of spring clip progressive die, comprises patrix (22), lower base plate (33) and several guide pillars (7) that are arranged on the patrix (22), it is characterized in that, described lower base plate (33) is provided with corner cutting insert (1a), first bump insert (1b), punching insert (1c), first stretching insert (1d), second bump insert in sequence (1e), the second drawing insert (1f), the first scrap insert (1g), the second scrap insert (1h), the bending forming insert (1i) and the breaking insert (1j), the The upper mold base (22) is successively provided with a first elastic pressing plate (27), a forming projection (29) and a second elastic pressing plate (28), and the first elastic pressing plate (27) and the corner cutting insert (1a ), the first bump insert (1b), the punch insert (1c), the first stretch insert (1d), the second bump insert (1e), the second stretch insert (1f), The first scrap insert (1g) is matched with the second scrap insert (1h), the forming bump (29) is matched with the curved molding insert (1i), and the second elastic pressing plate (28) is matched with the broken insert Block (1j) fits. 2. The spring clamp progressive die according to claim 1, characterized in that several elastic buffers (6) are provided on the upper die base (22). 3. spring clamp progressive die according to claim 2, is characterized in that, described elastic buffer (6) is cylinder, and the cylinder body of described cylinder is connected with described upper mold base (22), and described Both the first elastic pressing plate (27) and the second elastic pressing plate (28) are connected with the lower end of the cylinder. 4. The spring clamp progressive die according to claim 3, characterized in that, a first elastic clamping plate (27) and a second elastic clamping plate (28) and the upper mold base (22) are respectively provided with a first The spring pressing seat (25) and the second spring pressing seat (26), the lower end of the upper die seat (22) is fixed with an upper backing plate (23), the first spring pressing seat (25) and the second spring pressing seat (26) An upper splint (24) is provided between the upper backing plate (23). 5. The spring clip progressive die according to claim 4, characterized in that, the lower end of the lower base plate (33) is provided with a support frame (34), and the upper end of the lower base plate (33) is provided with a lower backing plate (31 ), the upper end of the lower backing plate (31) is provided with a lower splint (32), the corner cutting insert (1a), the first bump insert (1b), the punching insert (1c), the first Stretch insert (1d), 2nd bump insert (1e), 2nd draw insert (1f), 1st scrap insert (1g), 2nd scrap insert (1h), bend forming insert Both the block (1i) and the cutting insert (1j) are arranged on the lower splint (32). 6. The spring clip progressive die according to claim 5, characterized in that, several floating material pins (4) are uniformly arranged on the lower clamping plate (32), and the floating material pins (4) are arranged on the Lower splint (32) both sides. 7. The spring clamp progressive die according to claim 6, characterized in that, a baffle (5) is provided between the bending forming insert (1i) and the cutting insert (1j). 8. The spring clamp progressive die according to claim 7, characterized in that, the guide post (7) is a GP25 guide post (7), and the upper end of the upper mold base (22) is provided with a cover plate (21) .