CN111842672A - A riveting tool - Google Patents

Abstract

The invention discloses a riveting tool, and belongs to the technical field of riveting tools. The riveting tool comprises an upper template, a lower template and a punch assembly arranged on the upper template, wherein the punch assembly comprises a riveting male die and a locking pin; the bottom of the locking pin is provided with a conical part; the positioning assembly comprises a positioning plate arranged on the lower template, the positioning plate is provided with a mounting cavity, a locking block is slidably arranged in the mounting cavity, a first notch communicated with the mounting cavity is formed in the positioning plate, a second notch is formed in the locking block at a position corresponding to the first notch, and the first notch and the second notch just fix a lock head placed in the first notch when the first notch and the second notch are closed.

Description

A riveting tool

technical field

The invention relates to the technical field of riveting tooling, in particular to a riveting tooling.

Background technique

At present, the lock head riveting in the door lock, the practice in the industry is to cut several holes in the lower die of the riveting tool, put the lock head in the hole, and riveted in the unclamped state. Because of this method, the lower die holes are opposite to each other. The riveted lock head is placed with a gap, the lock head is loose when placed in the hole, and the lock head can be displaced irregularly in the hole, so after the lock head is riveted, the relative position of several lock heads is very low In order to ensure the product can be used, the matching gap between the lock body panel and the lock head hole is set relatively large to make up for the lack of low position accuracy after the lock head is riveted, resulting in low product quality (appearance looks like the lock head has a large matching gap).

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a riveting tool, in order to solve the technical problems existing in the background art.

In order to achieve the above object, the present invention adopts the following technical solutions:

A riveting tool includes an upper template and a lower template, and further includes: a punch assembly mounted on the upper template, the punch assembly including a riveting punch and a locking pin; the bottom of the locking pin is provided with A conical part; a positioning assembly, the positioning assembly includes a positioning plate installed on the lower template, an installation cavity is opened on the positioning plate, a locking block is slidably installed in the installation cavity, and a positioning plate is opened on the positioning plate. The first gap communicated with the installation cavity is provided with a second gap at the position corresponding to the first gap on the locking block. When the first gap and the second gap are closed, they will just be placed on the first gap. The lock head in the gap is fixed, and a stepped hole communicated with the installation cavity is provided on the side wall of the locking block with the second gap, and the stepped hole is provided with an elastic member in contact with the positioning plate, so The locking block is provided with a guide hole that is staggered with the locking pin. Before the locking pin and the guide hole are in contact, the first notch and the second notch are in a separated state. After the contact, the locking pin drives the locking block to move in the direction of the first gap. When the first gap and the second gap are closed, the riveting punch just starts to contact the to-be-riveted point on the lock head to achieve riveting.

Further, the punch assembly also includes a punch fixing plate, an upper die pad, a collar and a locking pin return spring, the upper die pad is fixed on the upper template, and the punch fixing plate is fixed on the upper die. On the die pad, the riveting punch is fixed on the punch fixing plate, the locking pins are arranged to slide through the upper die plate, the upper die pad and the punch fixing plate in sequence, and the locking pins are arranged on the punch fixing plate A snap ring groove is opened at the bottom, and the snap ring is clamped in the snap ring groove to limit the axial position of the locking pin. The upper end of the locking pin is provided with a limit cap, and the locking pin resets the spring sleeve It is arranged on the locking pin, the lower end of the locking pin return spring is in contact with the upper plane of the punch fixing plate, and the upper end of the locking pin return spring is in contact with the limit cap.

Further, the riveting tool further includes: a power assembly, the power assembly includes: a lower die pad, the lower die pad is slidably connected to the lower die plate, and the positioning assembly is fixed on the lower die pad a power device, the power device is connected with the lower die pad; it is used to drive the lower die pad to reciprocate on the lower die plate.

Further, the power assembly further includes: a guide assembly, the guide assembly includes a first guide plate and a second guide plate, the first guide plate and the second guide plate are respectively arranged on the lower template, and the A guide chute is formed between the first guide plate and the second guide plate, and the lower die pad is slidably connected in the guide chute.

Further, the riveting tooling further includes: a guide sleeve, the guide sleeve is installed on the upper formwork; a guide post, the guide post is installed on the lower formwork, and the guide post is slidably connected to the guide post Inside the sleeve, an upper die return spring is sleeved on the guide post, the bottom end of the upper die return spring is in contact with the lower die plate, and the top end of the upper die return spring is in contact with the guide sleeve.

Further, a limit block is provided on the lower mold plate at one end of the lower mold backing plate away from the power device.

Compared with the prior art, the present invention has the following beneficial effects:

The invention has novel structure and strong practicability. By applying the technical solution of the present invention, the positional accuracy of the lock head after riveting is improved, thereby improving product quality, and the production efficiency is also particularly high, which can reduce labor costs and save energy consumption, thereby reducing product costs and improving overall product competitiveness.

Description of drawings

1 is a schematic top view of a riveting tool in an embodiment of the present invention;

FIG. 2 is a B-B sectional view in FIG. 1 .

FIG. 3 is a cross-sectional view taken along line A-A in FIG. 1 .

FIG. 4 is a C-C cross-sectional view of FIG. 2 .

FIG. 5 is a D-D cross-sectional view of FIG. 4 .

6 is a perspective view of a riveting tooling of the present invention;

FIG. 7 is a schematic diagram of the lock head and the lock tongue fixing plate after riveting in the embodiment of the present invention.

Markings in the figure: 1- Lower die plate, 2- First guide plate, 3- Lower die plate, 4- Positioning plate, 5- Guide post, 6- Upper die return spring, 7- Guide sleeve, 8- Upper die plate, 9- Lock head, 10- Punch fixing plate, 11- Lock pin, 12- Lock pin return spring, 13- Upper die plate, 14- Lock tongue fixing plate, 15- Clamp, 16- Guide shaft, 17- Second guide plate, 18- Cylinder, 19- Cylinder fixing seat, 20- Cylinder fixing plate, 21- Cylinder connecting head, 22- Cylinder connecting shaft, 23- Snap ring, 24- Cylinder T-shaped connecting block, 25- Front limit block, 26-riveting punch, 27-lock block, 28-lock block return spring, 29-rear limit block, 30-first notch, 31-second notch.

Detailed ways

The present invention will be further described below with reference to the embodiments, and the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other used embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Embodiment 1:

As shown in Figures 2 and 3, a riveting tooling includes an upper die plate 8, a lower die plate 1 and a punch assembly. On the upper die plate 8 of the punch assembly, the punch assembly includes a riveting punch 26 and a locking pin 11; The bottom of the locking pin 11 is provided with a conical portion; the positioning assembly includes a positioning plate 4 installed on the lower template 1, and an installation cavity is opened on the positioning plate 4, and a sliding installation is installed in the installation cavity. The locking block 27, the length of the locking block 27 is equal to the length of the installation cavity of the positioning plate 4, to ensure that the locking block 27 can only have one direction displacement in the installation cavity. As shown in FIG. 5 , the positioning plate 4 is provided with a first notch 30 communicating with the installation cavity, and a second notch 31 is formed on the locking block 27 at a position corresponding to the first notch 30 , when the first gap 30 and the second gap 31 are closed, the lock head 9 placed in the first gap 30 is just fixed, and the side wall of the locking block 27 with the second gap 31 is opened with the The installation cavity is connected to a stepped hole, and an elastic member in contact with the positioning plate 4 is arranged in the stepped hole. In this embodiment, the elastic member is a reset spring of the locking block 27 . The locking block 27 is provided with a guide hole staggered with the locking pin 11. Before the locking pin 11 and the guide hole are in contact, the first notch 30 and the second notch 31 are in a separated state. After the locking pin 11 is in contact with the guide hole, the locking pin 11 drives the locking block 27 to move in the direction of the first gap 30. When the first gap 30 and the second gap 31 are closed, the riveting punch 26 is just in contact with the lock head 9. The points to be riveted begin to contact and realize riveting. As shown in FIG. 4 , the riveted lock head 9 and the lock tongue fixing plate 14 are shown in FIG. 7 .

In order to facilitate the smooth sliding of the locking block 27 in the installation cavity, the interior of the positioning plate 4 is provided with two first guide shafts 16 holes in the moving direction of the locking block 27 . A second guide shaft 16 hole is opened at the position opposite to the 16 hole, the guide shaft 16 penetrates into it, and is tightly matched with the first guide shaft 16 hole on the positioning plate 4. The two second guide shafts 16 on the locking block 27 The hole is slidably matched with the guide shaft 16 , and the locking block 27 is sleeved on the guide shaft 16 with a return spring.

As shown in FIG. 6 , the structure of clamping and fixing the lock head 9 of the present invention is novel. Before the lock head 9 is clamped, the locking block 27 abuts against a part of the installation cavity away from the first gap 30 under the elastic force of the elastic member. In this embodiment, the elastic component is the return spring of the locking block 27, and there is a gap of about 1-2 mm between the locking block 27 and the side where the first gap 30 is opened in the installation cavity. The second notch 31 is in the separated state. At this time, the lock head 9 can be easily put into the first notch 30, and then the lock tongue fixing plate 14 is placed on the riveting column of the lock head 9 for pre-positioning, and then the upper template 8 Driven by the power device, it moves downward, and the front of the tightening block is provided with two guide holes that cooperate with the locking pin 11. The two guide holes are slightly misaligned with the locking pin 11 before the locking pin 11 is inserted. The lowermost end of the locking pin 11 is provided with a taper. When the locking block 27 is pushed to the outermost side under the force of the reset spring of the locking block 27, the locking pin 11 can also be inserted into the two holes corresponding to the locking block 27. .

When the locking pin 11 is completely inserted into the two holes of the locking block 27 , the return spring of the locking block 27 is compressed, so that the locking block 27 moves backward, thereby realizing the action of clamping the lock head 9 . When the first gap 30 and the second gap 31 are closed, the riveting punch 26 just comes into contact with the to-be-riveted point of the riveting post on the lock head 9 and realizes riveting. During the riveting process, the locking pin 11 is always in the guide hole That is, the depth of the guide hole is enough to support the riveting punch 26 to move down to complete the riveting. The lock head 9 riveting tool can quickly clamp the lock head 9, and then rive the lock head 9. Because it is clamped and then riveted, the position of the lock head 9 is well guaranteed, and the product quality is qualitatively improved. And the production efficiency is also very high.

It should be noted that the number of the first notch 30 and the second notch 31 for fixing the lock head 9 can be set according to the actual product requirements. 30 and the second gap 31 There are also three teams of the first gap 30 and the second gap 31.

In this embodiment, the punch assembly further includes a punch fixing plate 10, an upper die pad 13, a collar 15 and a locking pin return spring 12, the upper die pad 13 is fixed on the upper die plate 8, The punch fixing plate 10 is fixed on the upper die pad 13, the riveting punch 26 is fixed on the punch fixing plate 10, and the locking pin 11 slides through the upper die plate 8, the upper die pad 13 and The punch fixing plate 10 is arranged, the punch 26 is riveted, and is tightly fitted with the concave platform on the punch fixing plate 10 through the steps on itself, and is fixed on the punch fixing plate 10 . The punch fixing plate 10 is provided with two holes for locking pins 11 , and the two holes are slidably matched with the locking pins 11 .

The locking pin 11 is provided with a snap ring groove below the punch fixing plate 10 , and the snap ring 15 is clamped in the snap ring groove to limit the axial position of the locking pin 11 . The upper end of the pin 11 is provided with a limit cap, the locking pin return spring 12 is sleeved on the locking pin 11, the lower end of the locking pin return spring 12 is in contact with the upper plane of the punch fixing plate 10, and the locking pin return spring 12 The upper end is in contact with the limit cap.

The riveting tool further includes: a guide sleeve 7 installed on the upper template 8; a guide post 5 installed on the lower template 1, the guide post 5 is slidably connected In the guide sleeve 7 , an upper die return spring 6 is sleeved on the guide post 5 , the bottom end of the upper die return spring 6 is in contact with the lower die plate 1 , and the top end of the upper die return spring 6 is in contact with the guide sleeve 7 .

The punch assembly configured in this embodiment is more flexible to use and can be used with the punch press. The punch slide block moves downward. First, the punch press slide block is pressed to the locking pin 11 first, and as the punch press slide block moves downward, it will be locked. The pin 11 is gradually pressed into the guide hole of the locking block 27, and at the same time, the return spring of the locking block 27 is compressed, and the locking block 27 is pushed backward, so that the first gap 30 and the second gap 31 are closed and the lock head 9 is clamped , before the riveting punch 26 contacts the product to be riveted, the lock head 9 is clamped, and then the punch slide presses the upper template 8 together with the locking pin 11 and moves downward together. When the upper template 8 is lowered to the proper position, the riveting convex The die 26 riveted the lock head 9 . After the slider of the punch press is retracted upwards, the upper die plate 8 returns to its original position under the action of the return spring 6 of the upper die, and the parts are taken out, then re-installed, and the above steps are repeated.

Among them, the locking pin 1111 is installed in the through hole of the upper die punch fixing plate 10, and slidingly cooperates with the punch fixing plate 10. The middle and lower sections of the locking pin 11 are provided with a snap ring groove, and the snap ring 15 is stuck in the groove. Inside, the locking pin 11 is axially limited, the upper end of the locking pin 11 is provided with a limit cap, the locking pin return spring 12 is sleeved on the outer circle of the locking pin 11, and the The lower end is in contact with the upper plane of the punch fixing plate 10, and the upper end of the locking pin return spring 12 is in close contact with the lower plane of the upper step of the locking pin 11. Under the force of the spring, the locking pin 11 reset function is realized. The locking pin 11 is higher than the upper die plate 8 by a distance before it is not in contact with the punch block.

Example 2:

As shown in Figures 1 and 4, this implementation is further optimized on the basis of Embodiment 1. This embodiment focuses on the improvements compared with Embodiment 1, and the similarities will not be repeated. In this embodiment, The riveting tool also includes: a power assembly, the power assembly includes: a lower die pad 3, the lower die pad 3 is slidably connected to the lower die plate 1, and the positioning assembly is fixed on the lower die pad The power device is connected with the lower die pad 3 ; it is used to drive the lower die pad 3 to reciprocate on the lower die plate 1 .

A power assembly is installed, so that the lower die pad 3 can be pushed out through the power device, so that the lower die pad 3 moves together with the positioning assembly, avoiding the punch fixing plate 10, the locking pin 11, etc., which is convenient for Clamping and taking out workpieces make it safer to pick and place workpieces. In this embodiment, the power device is an air cylinder 18, but an electric push rod can also be used.

The configuration structure of the air cylinder 18 is described below by taking the air cylinder 18 as an example. The air cylinder fixing plate 20 is fixed to the rear of the lower template 1 by bolts. The cylinder fixing seat 19 is fixed on the cylinder fixing plate 20 by bolts. The cylinder 18 is fixed on the cylinder fixing seat 19 by bolts, and the front end of the shaft of the cylinder 18 is connected with a cylinder connecting head 21 through threads. The cylinder T-shaped connecting block 24 is fixedly connected to the positioning plate 4 through bolts. The cylinder T-shaped connecting block 24 is provided with a strip hole (or round hole), and the cylinder connecting head 21 is provided with a through hole for fixing the cylinder connecting shaft 22 . The cylinder connecting shaft 22 is fixed on the through hole of the cylinder connecting head 21 through the snap ring 23, and the cylinder connecting shaft 22 penetrates into the strip hole (or round hole) of the cylinder T-shaped connecting block 24 to realize the fixed connection of the pin shaft. Under the action of the air cylinder 18, the lower die pad 3, the positioning plate 4 and the locking block 27 can be pulled to move together.

In this embodiment, the power assembly further includes: a guide assembly, the guide assembly includes a first guide plate 2 and a second guide plate 17 , and the first guide plate 2 and the second guide plate 17 are both L-shaped , the first guide plate 2 and the second guide plate 17 are respectively arranged on the lower template 1, and are fixed with the lower template 1 by bolts, and the first guide plate 2 and the second guide plate 17 are formed between the The guide chute, a step is provided on both sides of the lower die pad 3, which are respectively matched with the left and right L-shaped first guide plates 2 and the second guide plates 17, and the lower die pad 3 is slidably connected in the guide chute. .

A guide chute composed of guide components is provided to ensure that the lower die pad 3 slides more smoothly, and will not place the lock tongue fixing plate 14 to be riveted on the lock head 9 after placing the workpiece to be riveted. Pre-positioning is carried out on the riveting column of the lock bolt. When the power assembly is retracted, the movement of the lower die pad 3 is too jittery, causing the position deviation or falling of the bolt fixing plate 14 on the bolt, resulting in poor riveting quality.

Optionally, the lower die pad 3 is provided with a front limit block 25 on the lower die plate 1 at one end away from the power unit, and the lower die pad 3 is provided with a front limit on the lower die plate 1 at one end of the power unit. Position block 25 is followed by limit block 29. It is used to limit the front and rear positions of the lower die backing plate 3 to ensure accurate positioning during riveting, improve riveting quality, and accurately position the workpiece when picking up and placing workpieces, which is convenient for automated assembly operations.

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 shall be included in the protection of the present invention. within the range.

Claims (6)

1. The utility model provides a riveting tools, includes cope match-plate pattern (8) and lower bolster (1), its characterized in that still includes: the punch assembly is mounted on the upper die plate (8) and comprises a riveting punch (26) and a locking pin (11), and a conical part is arranged at the bottom of the locking pin (11);

a positioning component which comprises a positioning plate (4) arranged on the lower template (1), a mounting cavity is arranged on the positioning plate (4), a locking block (27) is arranged in the mounting cavity in a sliding way, a first notch (30) communicated with the mounting cavity is arranged on the positioning plate (4), a second notch (31) is arranged on the locking block (27) at the position corresponding to the first notch (30), when the first gap (30) and the second gap (31) are closed, the lock head (9) placed in the first gap (30) is just fixed, a step hole communicated with the mounting cavity is arranged on the side wall of the locking block (27) provided with the second gap (31), an elastic component which is contacted with the positioning plate (4) is arranged in the step hole, and a guide hole which is arranged in a staggered manner with the locking pin (11) is formed in the locking block (27);

Before the locking pin (11) contacts with the guide hole, the first notch (30) and the second notch (31) are in a separated state, after the locking pin (11) contacts with the guide hole, the locking pin (11) drives the locking block (27) to move towards the direction of the first notch (30), and when the first notch (30) and the second notch (31) are closed, the riveting male die (26) just contacts with a to-be-riveted point on the lock head (9) and riveting is achieved.

2. The riveting tool according to claim 1, wherein the punch assembly further comprises a punch retainer plate (10), an upper die cushion plate (13), a retainer ring (15) and a locking pin return spring (12), the upper die cushion plate (13) is fixed on the upper die plate (8), the punch retainer plate (10) is fixed on the upper die cushion plate (13), the riveting punch (26) is fixed on the punch retainer plate (10), the locking pin (11) sequentially penetrates through the upper die plate (8), the upper die cushion plate (13) and the punch retainer plate (10) in a sliding manner, the locking pin (11) is provided with a retainer ring groove below the punch retainer plate (10), the retainer ring (15) is clamped in the retainer ring groove and used for axially limiting the locking pin (11), the upper end of the locking pin (11) is provided with a limiting cap, and the locking pin return spring (12) is sleeved on the locking pin (11), the lower end of the locking pin return spring (12) is in contact with the upper plane of the punch retainer plate (10), and the upper end of the locking pin return spring (12) is in contact with the limiting cap.

3. The rivet tool of claim 1, further comprising: a power assembly, the power assembly comprising: the lower die base plate (3) is connected to the lower die plate (1) in a sliding mode, and the positioning assembly is fixed to the lower die base plate (3); the power device is connected with the lower die base plate (3); is used for driving the lower die base plate (3) to do reciprocating motion on the lower die plate (1).

4. The rivet assembly of claim 3, wherein the power assembly further comprises: the guide assembly comprises a first guide plate (2) and a second guide plate (17), wherein the first guide plate (2) and the second guide plate (17) are arranged on the lower die plate (1) respectively, a guide sliding groove is formed between the first guide plate (2) and the second guide plate (17), and the lower die base plate (3) is in sliding connection in the guide sliding groove.

5. The rivet tool of claim 1, further comprising: the guide sleeve (7), the said guide sleeve (7) is installed on said upper template (8); the guide post (5), the guide post (5) is installed on the lower template (1), the guide post (5) is connected in the guide sleeve (7) in a sliding mode, an upper die reset spring (6) is sleeved on the guide post (5), the bottom end of the upper die reset spring (6) is in contact with the lower template (1), and the top end of the upper die reset spring (6) is in contact with the guide sleeve (7).

6. The riveting tool according to claim 1, wherein the lower die base plate (3) is provided with a front limiting block (25) on the lower die plate (1) at the end far away from the power device, and the lower die base plate (3) is provided with a rear limiting block (29) on the lower die plate (1) at the end near the power device.

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