CN203526903U - Nail pressing clamp - Google Patents

Abstract

The utility model discloses a nail pressing clamp which comprises an upper portion assembly and a lower portion assembly and is characterized in that the upper portion assembly comprises an upper bottom plate, a through hole arranged in the center of the upper bottom plate, a press down block is arranged on the periphery of the through hole, guide pillar stoppers are arranged on the two sides of the bottom of the upper bottom plate respectively, the lower portion assembly comprises a lower plate, guide sleeve stoppers respectively arranged at two sides of the end face of the lower plate, a lower cushion block is arranged on the center of the end face of the lower plate, and the lower cushion block is connected with a mobile module through a die spring. The nail pressing clamp after being assembled is stable in assembling dimension, and high in production efficiency, university and convenient for maintenance.

Description

A nail clamp

technical field

The utility model relates to a nail pressing fixture, which is used for pressing bolts in an automobile chassis part into a shock-absorbing support or a shock-absorbing rubber support, belonging to the technical field of assembly devices for automobile parts.

Background technique

With the development of the automobile industry, the structure in which the bolts are pressed into the shock absorber bracket or the shock absorber rubber mount is more and more used in the vibration damping field of the automobile. The bolt I shown in FIG. 1 is positioned by the assembly fixture on the hydraulic assembly machine and pressed into the shock absorbing bracket II shown in FIG. 2 . In order to improve the position of the bolts after being pressed in, the yield, the pressure-off force of the bolts, and the work efficiency of the operators, it is often necessary to position the unpressed bolts before pressing them in, and take out the product in one step every time. , and the operator can easily take it out after being pressed in. However, the assembly quality of the current assembly jig is poor, and the product cannot be taken out in one step. The steps when taking out the product are cumbersome, inefficient, troublesome in assembly and maintenance, and cannot meet the requirements.

Contents of the invention

The technical problem to be solved by the utility model is: to provide a clamping fixture that improves the assembly quality of the product, improves the work efficiency of the operator, and is convenient for assembly and maintenance, and solves the problems of poor assembly quality, cumbersome operation, low efficiency, and poor assembly and maintenance of the assembly fixture. Troublesome question.

In order to solve the above technical problems, the technical solution of the utility model is to provide a nail pressing fixture, including an upper assembly and a lower assembly, characterized in that the upper assembly includes an upper base plate, and a through hole is provided in the middle of the upper base plate. A lower pressure block is arranged around the through hole, guide post limit blocks are respectively provided on both sides of the bottom surface of the upper bottom plate, the lower assembly includes a lower bottom plate, guide sleeve limit blocks are respectively provided on both sides of the top surface of the lower bottom plate, A lower pad is provided in the middle of the top surface of the lower bottom plate, and the lower pad is connected with the mobile module through a mold spring.

Preferably, a standard guide sleeve is provided inside the lower cushion block, and the standard guide sleeve is arranged between the lower cushion block and the mobile module.

Preferably, the mold spring is set on the standard guide sleeve.

Preferably, the number of the guide post limiting blocks and the guide sleeve limiting blocks are the same, and they are matched with each other.

Preferably, anti-slip blocks are provided on both sides of the mobile module, and the anti-slip blocks are closely connected with the lower pads.

Preferably, the number of the pressing blocks is the same as that of the anti-skid blocks.

Preferably, there are at least three lower pressing blocks.

The utility model has strong versatility, can reduce the manufacturing cost of the fixture, and is also beneficial to the management of the fixture. The utility model utilizes the elastic force of the spring to rebound the pressed product, and the guide post limit block, the anti-slip block and the guide sleeve limit block play the role of guiding and limiting during the assembly process, preventing the bolts from being crooked and clamps between clamps. Rotation and product overpressure deformation.

The utility model also has the following advantages:

1. The size of the assembled product is very stable. The symmetry tolerance of the product pressed into the welding bracket is ±0.1mm, and the assembly size deviation is ±0.2mm, which ensures the consistency of the product. The process capability index Cpk can reach more than 1.67 ;

2. The production efficiency is very high: it can reach 2500 pieces/8 hours. The shock absorbing bracket can be easily put into the fixture, and the bolts are also easy to put in. When the bolts are put into the standard guide sleeve, the bolts put in have a distance of 5mm. So that the burr generated when the bolt is pressed in will not jam the bolt and will not be unable to pull it out. The main reason is that the product can be easily taken out after being pressed. It also eliminates the bumping of the product during the assembly process and reduces the subsequent touch-up painting process;

3. Convenient operation: the overall weight of the fixture is reduced (the bottom plate of the fixture positioned by the four guide columns used to have a thickness of 80 mm, which is quite bulky), which is convenient for the operator to adjust the fixture on the hydraulic press. After adjusting the fixture, only need to put in the shock absorber Brackets and bolts, press the start button, and then take out the product, the operation is very simple;

4. Convenient maintenance: because they are all connected by bolts, it is easy to disassemble and assemble. If any part is damaged, it can be dismantled and directly repaired.

Description of drawings

Fig. 1 is the structural representation of bolt;

Fig. 2 is the structural schematic diagram of damping bracket;

Fig. 3 is a structural schematic diagram (with partial cross-section) of a nail pressing fixture when viewed from the front;

Fig. 4 is a structural schematic diagram (with a partial section) of the upper assembly of a nail pressing fixture;

Fig. 5 is a structural schematic view (with partial section) of the lower assembly of a nail pressing fixture;

Fig. 6 is a top view of the lower assembly of a nail pressing fixture (with assembled products);

Figure 7 is a schematic diagram of the assembled product.

Detailed ways

In order to make the utility model more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

The utility model is a nail pressing fixture, as shown in Figure 3, which includes an upper component A and a lower component B, all of which are connected by standard bolts, and are completely installed on a hydraulic assembly machine.

As shown in Figure 4, the upper assembly A includes an upper base plate 10, a through hole 11 is drilled in the middle of the upper base plate 10, three upper pressing blocks 9 are installed around the through hole 11, and guides are respectively installed on both sides of the bottom surface of the upper base plate 10. Column limit block 8.

As shown in Figure 5 and Figure 6, the lower assembly B includes a lower base plate 1, guide sleeve limit blocks 2 are installed on both sides of the top surface of the lower base plate 1, and a lower cushion block 3 is installed in the middle of the top surface of the lower base plate 1. The spring 4 is contained in the lower pad 3, and the other end of the mold spring 4 touches the mobile module 6 and is connected with the mobile module 6 when the product is pressed down. The mobile module 6 is installed in the inside of the lower pad 3, and a clearance fit is formed between the lower pads 3, and the anti-slip block 5 is installed on both sides of the mobile module 6, and is closely connected with the lower pad 3 (that is, the anti-skid block 5 is installed on the lower pad block 3 and the middle of the contact surface of the mobile module 6), three standard guide sleeves 7 inside the lower pad 3 are respectively clamped inside the mobile module 6 and the lower pad 3, and the mold spring 4 is set on the outside of the standard guide sleeve 7.

The number of the guide post limit blocks 8 and the guide sleeve limit blocks 2 are the same, and they match each other. The quantity of the pressing block 9 is the same as the quantity of the anti-skid block 5, which is 3.

The working principle of the utility model is: move the whole fixture to the hydraulic assembly machine, connect the upper base plate 10 and the lower base plate 1 with the hydraulic assembly machine; The position of the utility model; after installation and adjustment, first put the shock absorbing bracket II on the mobile module 6, and fix the position of the shock absorbing bracket II to prevent it from rotating (there is a fixed hole on the mobile module 6 that will not slide after being placed) ; Then bolt 1 is put into the standard guide sleeve 7 inside the mobile module 6 (insert the standard guide sleeve 7 to get final product). When the hydraulic assembly machine is started, the upper base plate 10 is driven to move downward, causing the upper pressing block 9 to press the bolt I into the shock absorbing bracket II; the mold spring 4 inside the mobile module 6 is compressed after being pressed during the whole process; when the bolt I is completely After being pressed to a qualified position, the hydraulic assembly machine drives the upper base plate 10 back to the original position. During this process, the pressure on the mold spring 4 gradually decreases and rebounds, so that the assembled product III slowly bounces back to the previous position. At the position where the bolt I is placed, the whole product breaks away from the limitation of the burrs left after the bolts are pressed by the standard guide sleeve 7, and the operator can easily take out the assembled product III (as shown in Figure 7), so far the whole product The assembly process is all done. The lower pressing block 9, the lower cushion block 3 and the moving module 6 in the utility model can be replaced according to the positioning requirements and sizes of different products. Conducive to fixture management.

Claims (7)

1. a nail pressing fixture, comprise top assembly (A) and lower component (B), it is characterized in that, described top assembly (A) comprises upper plate (10), the centre of upper plate (10) is provided with through hole (11), the surrounding of through hole (11) is provided with lower lock block (9), the both sides, bottom surface of upper plate (10) are respectively equipped with guide pillar limited block (8), described lower component (B) comprises lower shoe (1), the end face both sides of lower shoe (1) are respectively equipped with guide pin bushing limited block (2), the end face middle part of lower shoe (1) is provided with lower cushion block (3), lower cushion block (3) is connected with mobile module (6) by die springs (4).

2. a kind of nail pressing fixture as claimed in claim 1, is characterized in that, is provided with standard guide pin bushing (7) in described lower cushion block (3), and standard guide pin bushing (7) is located between lower cushion block (3) and mobile module (6).

3. a kind of nail pressing fixture as claimed in claim 2, is characterized in that, described die springs (4) is set on standard guide pin bushing (7).

4. a kind of nail pressing fixture as claimed in claim 1, is characterized in that, described guide pillar limited block (8) is identical with the quantity of guide pin bushing limited block (2), and mutually mates.

5. a kind of nail pressing fixture as claimed in claim 1, is characterized in that, the both sides of described mobile module (6) are provided with non-slipping block (5), and non-slipping block (5) is closely connected with lower cushion block (3).

6. a kind of nail pressing fixture as claimed in claim 5, is characterized in that, the quantity of described lower lock block (9) is identical with the quantity of non-slipping block (5).

7. a kind of nail pressing fixture as claimed in claim 6, is characterized in that, described lower lock block (9) is at least provided with 3.

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