CN106853504B - Rack side plate fixed both ends of the shaft riveting clamp - Google Patents

Abstract

The invention relates to a riveting fixture at both ends of a fixed shaft of a side plate of a bracket, comprising a fixture body, above and below the fixture body, a punch assembly fixing plate is arranged, and the whole is I-shaped; it also includes a punch assembly, the punch assembly It includes an upper punch assembly fixed on the upper punch assembly fixing plate and a lower punch assembly fixed on the lower punch assembly fixing plate, the upper punch assembly and the lower punch assembly are on the same axis line. The invention has exquisite structure and simple operation, reduces labor intensity of workers, improves production efficiency and reduces production cost.

Description

Riveting clamps at both ends of the fixed shaft on the side plate of the bracket

technical field

The invention relates to a riveting mechanism at two ends of a shaft, and specifically discloses a riveting clamp for fixing the two ends of a shaft by a bracket side plate.

Background technique

The bracket part (as shown in Figure 3) is the core part of our company's KFM2 circuit breaker, which is related to product quality and production efficiency. This part has many parts and complex structure, and it is difficult to assemble. First, the problem of riveting positioning needs to be solved, so that employees can quickly and accurately put the parts into the fixture. Secondly, due to subsequent assembly requirements, after this process of riveting, the flanging of the semi-hollow shaft should be as flat as possible without protruding too much. In addition, after riveting, it is necessary to ensure the parallelism of the two side plates.

For a long time, employees have been riveting the two ends separately (at A in Figure 3), and then knocking them flat with a hammer after riveting. The work efficiency is low, the labor intensity is high, and it is difficult for employees to control the strength of the hammer when knocking, and it is easy to knock the bracket out of shape. In order to ensure product quality and better work efficiency, it is necessary to design fixtures that meet the company's requirements.

Contents of the invention

The object of the present invention is: to solve the above problems, provide a riveting jig for riveting both ends of the bracket side plate fixed shaft, which is exquisite in structure, easy to operate, reduces labor intensity of workers, improves production efficiency, and reduces production cost.

The technical scheme adopted in the present invention is as follows:

The riveting fixture at both ends of the fixed shaft of the side plate of the bracket includes a fixture body, a punch assembly fixing plate is arranged above and below the fixture body, and the whole is I-shaped; it also includes a punch assembly, and the punch assembly includes a fixed The upper punch assembly on the upper punch assembly fixing plate and the lower punch assembly fixed on the lower punch assembly fixing plate, the upper punch assembly and the lower punch assembly are on the same axis line.

Further, the punch assembly has two groups, which are distributed symmetrically on both sides of the clamp body.

Further, the upper punch assembly includes an upper crimping punch, an upper return spring, a limit sleeve and an upper preload rubber. One end of the upper crimping punch is a stamping end, and the other end is a pressing end. The end passes through the upper punch assembly fixing plate, and the outer side of the end is sleeved with the upper pre-pressed rubber; the upper return spring is sleeved on the upper crimping punch and is located above the upper punch assembly fixing plate; The limiting sleeve is arranged on the outer side of the upper return spring, fixed on the upper punch assembly fixing plate, and partially overlaps with the upper return spring.

Further, the punching end of the upper crimping punch is in the form of a protrusion in the middle, surrounded by an annular groove structure, and the raised part is higher than the end face of the punching end of the upper crimping punch.

Further, the raised portion of the stamping end of the upper crimping punch is lower than the plane of the end of the upper pre-compression rubber.

Further, the lower punch assembly includes a lower curling punch, a lower preloading thimble and a lower return spring, and a lower punch assembly fixing cavity is arranged inside the lower punch assembly fixing plate, and the lower curling punch One end of the head abuts against the inside of the lower punch assembly fixing cavity, and the other end is a stamping end, which extends out of the lower punch assembly fixing cavity; the lower pre-pressing thimble is movably socketed on the lower curling punch, One end is clamped in the fixing chamber of the lower punch assembly, and the other end extends out of the fixing chamber of the lower punch assembly; the lower return spring is located in the fixing chamber of the lower punch assembly, sleeved on the lower curling punch, abut against the end of the lower preloading thimble.

Further, the punching end of the lower crimping punch has a convex structure in the middle, surrounded by an annular groove structure, and the raised part is higher than the punching end surface of the lower curling punch.

Further, the raised portion of the punching end of the lower crimping punch is lower than the plane of the end of the lower preloading thimble.

Further, between the upper punch assembly and the lower punch assembly, a U-shaped positioning plate for positioning the fixed axis of the bracket side plate is provided on the clamp body.

In summary, owing to adopting above-mentioned technical scheme, the beneficial effect of the present invention is:

The present invention is used in conjunction with a press. After placing the product to be processed and starting the press, the riveting of the two side plates of the bracket can be completed at one time, and mechanical equipment is used instead of manual operation to complete the riveting, which reduces labor costs and labor intensity of workers and improves work efficiency. Efficiency, improve product qualification rate.

Description of drawings

Fig. 1 is a structural sectional view of the present invention;

Fig. 2 is a structural perspective view of the present invention;

Fig. 3 is the structural diagram of the product to be riveted according to the present invention;

Fig. 4 is an enlarged view of the stamping end structure of the upper or lower curling punch according to the present invention;

Fig. 5 is a structural diagram of the U-shaped positioning plate of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, the riveting fixture at both ends of the fixed shaft of the side plate of the bracket includes a fixture body 1, and punch assemblies 2 and 3 are arranged above and below the fixture body 1, and the whole is I-shaped; it also includes The punch assembly, the punch assembly has two groups, distributed on both sides of the fixture body, symmetrically distributed; the punch assembly includes an upper punch assembly fixed on the upper punch assembly fixing plate 2 and a lower punch assembly fixed on the lower The punch assembly fixes the lower punch assembly on the plate 3, and the upper punch assembly and the lower punch assembly are on the same axis. The punch assemblies are distributed in pairs and the upper and lower punch assemblies cooperate, that is, the fixed shaft riveting of the two bracket parts can be performed simultaneously, and the fixed shafts on both sides of the bracket can be riveted synchronously at the same time, which greatly improves the work efficiency.

The upper punch assembly includes an upper crimping punch 4, an upper return spring 5, a limit sleeve 6 and an upper preload rubber 7, one end of the upper crimping punch 4 is a stamping end, and the other end is a pressing end, Its stamping end passes through the upper punch assembly fixing plate 2, and the outer side of the end is sleeved with the upper pre-compression rubber 7; its pressing end is used to bear the pressure from the press; the upper return spring 5 is used for The reset after the upper curling punch 4 is punched is sleeved on the upper curling punch 4 and is located above the upper punch assembly fixing plate 2, and the pressing end of the upper curling punch 4 is provided with a device for upper reset The limit plate of the spring 5 limit can increase the force bearing area and prevent the axial deviation of the upper return spring 5; the limit sleeve 6 is arranged on the outer side of the upper return spring 5 and fixed on the upper punch assembly. On the plate 2, it partially overlaps with the upper return spring 5, that is, to ensure the effective punching length of the upper curling punch in the vertical direction, and to prevent the left and right displacement of the upper curling punch 4 and the upper return spring 5 . The stamping end of the upper crimping punch 4 (as shown in Figure 4) has a raised middle and an annular groove structure around it, and the raised part is higher than the stamping end face of the upper crimping punch 4 to ensure that the end of the fixed shaft Turn over as much as possible; the convex part of the punching end of the upper crimping punch 4 is lower than the end plane of the upper pre-pressing rubber 7 to ensure that the upper pre-pressing rubber 7 has a pre-pressing effect.

The lower punch assembly includes a lower crimping punch 8, a lower preloading thimble 9 and a lower return spring 10, and a lower punch assembly fixing cavity 11 is arranged inside the lower punch assembly fixing plate 3, and the lower punch assembly fixing cavity 11 is arranged inside the lower punch assembly fixing plate 3. One end of the side punch 8 abuts against the inside of the lower punch assembly fixing cavity 11 and is fixed, and the other end is a stamping end, which extends out of the lower punch assembly fixing cavity 11; the lower preloading thimble 9 is movably socketed On the lower crimping punch 8, one end is clamped in the lower punch assembly fixing cavity 11, and the other end extends to the outside of the lower punch assembly fixing cavity 11, and reciprocates up and down during the entire stamping process; the lower reset The spring 10 is used for the reset of the lower preloading thimble 9 before and after punching. It is located in the fixed cavity 11 of the lower punch assembly, sleeved on the lower crimping punch 8, and abuts against the end of the lower preloading thimble 9. . The stamping end of the lower curling punch 8 (as shown in Figure 4) has a raised middle and a ring-shaped groove structure around it, and its raised part is higher than the stamping end face of the lower curling punch 8 to ensure that the end of the fixed shaft Turn over as much as possible; the convex part of the punching end of the lower curling punch 8 is lower than the plane of the end of the lower preloading thimble 9 to ensure that the lower preloading thimble 9 has a preloading effect.

The cooperating arrangement of the upper preloading rubber 7 and the lower preloading thimble 9 is to ensure the parallelism of the riveting of the parts and that there is no gap between the step surface and the side plate surface after riveting.

As shown in Figure 5, between the upper punch assembly and the lower punch assembly, on the fixture body 1, a U-shaped positioning plate 12 for positioning the fixed axis of the bracket side plate is arranged. The U-shaped positioning plate 12 has the same structure as The structure of the corresponding position on the bracket is matched, and the fixed shaft can be placed between the upper and lower crimping punches 4 and 8 conveniently and quickly; the specifications of the bracket products are different, which can be satisfied by changing the height position of the U-shaped positioning plate 12 in the vertical direction. Riveting needs.

The riveting process of the fixed shaft of the side plate of the bracket is as follows:

The whole fixture is ready, and the parts of the bracket are ready. First assemble a batch of parts and put them on the table. When riveting, pick up the bracket parts as a whole, and then align the bracket axis with the U-shaped positioning plate 12 and put them in the fixture, which needs to be pushed in place. At this time, press the press button, the press presses down, the pre-pressed parts of the upper and lower curling punches 4 and 8 first touch the two side plates of the bracket, and the two side plates are compacted, and then the upper and lower curling punches 4, 8 Press to the semi-hollow shaft, the tip of the punch chisels the hollow part of the shaft, and then the shaft begins to be crimped and riveted. Release the button, the press is lifted up, and the upper crimping punch 4 is retracted immediately under the action of the upper return spring 5. At this time, the bracket part is taken out, the product is inspected, and the product is put into the turnover box. One riveting cycle is completed. During this process, employees assemble outside the machine table, and the operation is safe. After the bracket is put into the fixture, the riveting is completed at one time, and the riveting of the upper and lower riveting points is completed at one time, the efficiency is improved, and the riveting quality is reliable.

This fixture can be used when riveting both ends of the fixed shaft of the same similar product is required. In order to meet the requirements of different fixed shaft lengths, it can be realized by changing the distance between the upper and lower punch components. The structure is exquisite, the operation is convenient, and the work efficiency is high.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (6)

1. rack side plate fixed both ends of the shaft riveting clamp, including chuck body, are provided with above and below the chuck body Punch-head assembly fixed plate, it is whole in I-shaped；It is characterized by also including punch-head assembly, the punch-head assembly includes being fixed on Upper punch component in upper punch component fixed plate and the undershoot head assembly being fixed in undershoot head assembly fixed plate, the upper punching Head assembly and undershoot head assembly are on same axial line；

The punch-head assembly has two groups, is distributed in the two sides of the chuck body, symmetrical；

The upper punch component includes upper curling punch, upper reset spring, limit sleeve and upper precompressed rubber, the upper curling punch One end is punching press end, and the other end is pressure end, and punching press end passes through the upper punch component fixed plate, on the outside of end described in socket Upper precompressed rubber；The upper reset spring is socketed on curling punch, is located above the upper punch component fixed plate；It is described Limit sleeve is set on the outside of upper reset spring, is fixed in the upper punch component fixed plate, with the upper reset spring portion Divide overlapping；

It is provided on the upper punch component and low punch inter-module, the chuck body and is positioned for rack side plate fixing axle U-shaped positioning plate.

2. rack side plate fixed both ends of the shaft riveting clamp according to claim 1, it is characterised in that: the upper curling punch Punching press end is circular groove structure in intermediate projections, surrounding, and convex portion is higher by the upper curling punch punching press end end face.

3. rack side plate fixed both ends of the shaft riveting clamp according to claim 2, it is characterised in that: the upper curling punch Punching press end convex portion is lower than the upper precompressed rubber end plane.

4. rack side plate fixed both ends of the shaft riveting clamp according to claim 1, it is characterised in that: the undershoot head assembly Including Rolldown hem formed punch, lower precompressed thimble and lower reset spring, low punch is internally provided in the undershoot head assembly fixed plate It is abutted inside component lock chamber, Rolldown hem formed punch one end and undershoot head assembly lock chamber, the other end is punching press end, is extended The undershoot head assembly lock chamber out；In on the Rolldown hem formed punch, one end is connected in down the lower precompressed thimble pivot bush unit In punch-head assembly lock chamber, the other end is extended to outside undershoot head assembly lock chamber；The lower reset spring is located at undershoot head assembly In lock chamber, it is socketed on the Rolldown hem formed punch, is abutted with the lower precompressed thimble end.

5. rack side plate fixed both ends of the shaft riveting clamp according to claim 4, it is characterised in that: the Rolldown hem formed punch Punching press end is circular groove structure in intermediate projections, surrounding, and convex portion is higher by the Rolldown hem formed punch punching press end end face.

6. rack side plate fixed both ends of the shaft riveting clamp according to claim 5, it is characterised in that: the Rolldown hem formed punch Punching press end convex portion is lower than the lower precompressed thimble end plane.