Anti-inclination device for pulling self-plugging rivet

Abstract

The utility model provides a blind rivet pulling and riveting anti-inclination device, which belongs to the technical field of pulling and riveting, and is provided with a fixing ring, a guide mechanism, an extrusion layer, a buzzer and a stress block, the fixing ring is of an annular structure and is arranged on the outer side of a rivet column of the self-plugging rivet, and the inner wall of the fixing ring is fixedly connected with the side wall of the rivet column. The guide mechanisms are arranged on the two sides of the fixing ring, the guide mechanisms are arranged at the front end of a blind rivet blind nut, each guide mechanism comprises a telescopic sleeve rod and a connecting rod, the guide mechanisms are used for assisting a rivet column to move in the vertical direction, and the guide mechanisms are connected with the stress block; the extrusion layer is fixedly connected with the front end of the blind nut, the extrusion layer is of a square hollow structure, and the stress block is arranged above the extrusion layer; the problem that in the rivet pulling process, a rivet pulling gun pulls a self-plugging rivet to be deviated or slantly pulled, and therefore a workpiece is damaged can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of blind rivets, and in particular relates to a blind rivet anti-tilting device. Background Art

[0002] Blind rivets, also known as pull rivets or quick rivets, are a type of rivet used for single-sided riveting. They usually require the use of a dedicated rivet gun (which can be manual, electric or pneumatic) for riveting. During the riveting process, the rivet core is pulled by the rivet gun, causing the rivet body to expand, thereby achieving the riveting effect.

[0003] Pull riveting is a riveting method that uses special tools and blind rivets to put one end of the rivet into the drilled hole and rotate the handle of the rivet at the other end to pull the rivet close to the plate to form a riveted connection. This method is suitable for occasions that require light and fast operation, such as riveting in light industry and home furnishing. Pull riveting does not require a lot of force and equipment, can quickly complete the riveting operation, is simple to operate, has a short personnel training cycle, and has high operating efficiency. Pull riveting is a type of cold riveting that uses manual or compressed air as power to deform special rivets through special tools to rivet the riveted parts. The main process of pull riveting operation includes selecting a suitable rivet gun head aperture, adjusting the position of the guide tube, inserting the rivet, putting on the pull riveting gun, clamping the rivet mandrel, starting the rivet gun, and relying on the backward pulling force generated by compressed air to make the shoulder part of the mandrel form pressure on the rivet, thereby completing the riveting. The characteristic of pull riveting is that it does not require a pinning operation, and is suitable for components that cannot be pinned on the reverse side and have complex structures.

[0004] Currently, in the process of riveting, there is a problem that the rivet gun may pull the blind rivet to a side or crookedly, thereby damaging the workpiece. Utility Model Content

[0005] In view of this, the utility model provides a blind rivet anti-tilt device, which aims to solve the problem that the rivet gun may pull the blind rivet to a side or crooked position during the riveting process, thereby damaging the workpiece.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a blind rivet anti-tilt device, which comprises a fixing ring, a guiding mechanism, an extrusion layer, a buzzer and a stress block; the fixing ring is an annular structure, the fixing ring is arranged on the outside of the nail column of the blind rivet, and the inner wall of the fixing ring is fixedly connected to the side wall of the nail column; the guiding mechanism is arranged on both sides of the fixing ring, the guiding mechanism is arranged at the front end of the blind rivet pulling cap, the guiding mechanism comprises a telescopic sleeve rod and a connecting rod, the guiding mechanism is used to assist the nail column to move in the vertical direction, and the guiding mechanism is connected to the stress block; the extrusion layer is fixedly connected to the front end of the pulling cap, the extrusion layer is a square hollow structure, and the stress block is arranged above the extrusion layer; each vertex of the lower wall of the stress block is fixedly connected to the upper wall of the extrusion layer, the interior of the extrusion layer is filled with piezoelectric ceramics, and the extrusion layer is used to generate current when being squeezed so that the buzzer has current passing through to alarm.

[0008] On the basis of the above technical solution, the anti-tilt device for blind rivets of the utility model can also be improved as follows:

[0009] Among them, the telescopic sleeve includes an inner rod and an outer rod, the inner rod is arranged inside the outer rod, and the inner rod slides in the outer rod; the connecting rod is an L-shaped structure, one end of the connecting rod is fixedly connected to the side wall of the fixing ring, and the other end of the connecting rod is fixedly connected to the front end of the inner rod of the telescopic sleeve, and the connecting rod is used to drive the inner rod to slide in the outer rod so that the telescopic sleeve is extended.

[0010] Furthermore, the stress block is arranged below the telescopic sleeve rod, and the stress block is a pentagonal prism structure. The lower wall of the stress block is provided with a five-pointed star-shaped depression. The stress block is used to transmit extrusion force to the extrusion layer when the nail column is tilted; the lower wall of the outer rod of the telescopic sleeve rod is fixedly connected to the upper wall of the stress block.

[0011] Furthermore, the buzzer is connected to the extrusion layer via an electric wire, so that a loop is formed between the buzzer and the extrusion layer.

[0012] Furthermore, the upper wall of the extrusion layer is made of elastic material.

[0013] Furthermore, the vertices of the five-pointed star-shaped depression correspond one-to-one to the vertices of the lower wall of the stress block.

[0014] Furthermore, each vertex of the lower wall of the stress block is provided with a spherical protrusion; and a plurality of cylindrical protrusions are provided on the surface of the spherical protrusion.

[0015] Furthermore, the diameter of the spherical protrusion is 1 cm.

[0016] Furthermore, the maximum extension length of the telescopic sleeve is equal to the compression length of the pull cap.

[0017] Furthermore, the buzzer is fixedly arranged on the side wall of the fixing ring.

[0018] Compared with the prior art, the utility model provides a blind rivet anti-tilting device with the following beneficial effects: by setting, the lower wall of the stress block is provided with a five-pointed star-shaped depression, so that when the stress block is tilted, the stress can be concentrated at the apex of the stress block and transmitted to the extrusion layer, which is beneficial to better transmit the pressure to the extrusion layer; by setting the vertices of the lower wall of the stress block to be provided with spherical protrusions; the surface of the spherical protrusion is provided with a plurality of cylindrical protrusions, which can increase the contact area between the stress block and the extrusion layer, which is beneficial to improve the pressure transmission efficiency; it can solve the problem that the rivet gun will pull the blind rivet off-center or crooked during the riveting process, thereby damaging the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of a blind rivet anti-tilting device;

[0021] Figure 2 A is a schematic diagram of the structure;

[0022] Figure 3 is a schematic diagram of the stress block structure;

[0023] Figure 4 It is a schematic diagram of the extrusion layer structure;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Fixed ring; 2. Guide mechanism; 21. Telescopic sleeve rod; 22. Connecting rod; 3. Extrusion layer; 4. Buzzer; 5. Stress block. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0027] like Figure 1-4The figure is a schematic diagram of the structure of a blind rivet anti-tilt device provided by the utility model. In the device, there are a fixing ring 1, a guiding mechanism 2, an extrusion layer 3, a buzzer 4 and a stress block 5; the fixing ring 1 is an annular structure, the fixing ring 1 is arranged on the outside of the nail column of the blind rivet, and the inner wall of the fixing ring 1 is fixedly connected to the side wall of the nail column; the fixing ring 1 is provided with a guiding mechanism 2 on both sides, the guiding mechanism 2 is arranged at the front end of the blind rivet pulling cap, the guiding mechanism 2 includes a telescopic sleeve rod 21 and a connecting rod 22, the guiding mechanism 2 is used to assist the nail column to move in the vertical direction, and the guiding mechanism 2 is connected to the stress block 5; the extrusion layer 3 is fixedly connected to the front end of the pulling cap, the extrusion layer 3 is a square hollow structure, and a stress block 5 is arranged above the extrusion layer 3; the vertices of the lower wall of the stress block 5 are fixedly connected to the upper wall of the extrusion layer 3, the interior of the extrusion layer 3 is filled with piezoelectric ceramics, and the extrusion layer 3 is used to generate current when it is squeezed so that the buzzer 4 has current passing through to alarm.

[0028] When in use, the column of the blind rivet is inserted into the rivet gun, the rivet gun pulls the rivet forward, the fixing ring 1 moves forward with the rivet, and the connecting rod 22 pulls the inner rod of the telescopic sleeve 21 to extend. When the moving direction of the column is tilted, the connecting rod 22 links the fixing ring 1 to tilt to one side, thereby driving the telescopic sleeve 21 and the stress block 5 to tilt to one side, so that the stress is concentrated and transmitted to one side of the extrusion layer 3 through the stress block 5. The piezoelectric ceramics in the extrusion layer 3 generate current under the action of the extrusion force, and the buzzer 4 emits a sound through the current to remind the operator of the tilt problem in the riveting process so as to adjust the riveting direction.

[0029] Among them, in the above technical solution, the telescopic sleeve rod 21 includes an inner rod and an outer rod, the inner rod is arranged inside the outer rod, and the inner rod slides in the outer rod; the connecting rod 22 is an L-shaped structure, one end of the connecting rod 22 is fixedly connected to the side wall of the fixing ring 1, and the other end of the connecting rod 22 is fixedly connected to the front end of the inner rod of the telescopic sleeve rod 21, and the connecting rod 22 is used to drive the inner rod to slide in the outer rod so that the telescopic sleeve rod 21 is extended.

[0030] Furthermore, in the above technical solution, a stress block 5 is arranged below the telescopic sleeve 21. The stress block 5 is a pentagonal prism structure. The lower wall of the stress block 5 is provided with a five-pointed star-shaped depression. The stress block 5 is used to transmit extrusion force to the extrusion layer 3 when the nail column is tilted; the lower wall of the outer rod of the telescopic sleeve 21 is fixedly connected to the upper wall of the stress block 5.

[0031] Furthermore, in the above technical solution, the buzzer 4 is connected to the extrusion layer 3 via an electric wire, so that a loop is formed between the buzzer 4 and the extrusion layer 3 .

[0032] Furthermore, in the above technical solution, the upper wall of the extrusion layer 3 is made of elastic material.

[0033] Furthermore, in the above technical solution, the vertices of the five-pointed star-shaped depression correspond one-to-one to the vertices of the lower wall of the stress block 5 .

[0034] Furthermore, in the above technical solution, each vertex of the lower wall of the stress block 5 is provided with a spherical protrusion; and a plurality of cylindrical protrusions are provided on the surface of the spherical protrusion.

[0035] Furthermore, in the above technical solution, the diameter of the spherical protrusion is 1 cm.

[0036] Furthermore, in the above technical solution, the maximum extension length of the telescopic sleeve 21 is equal to the compression length of the pull cap.

[0037] Furthermore, in the above technical solution, the buzzer 4 is fixedly arranged on the side wall of the fixing ring 1 .

[0038] Specifically, the principle of the utility model is: the nail column of the core-pulling rivet is inserted into the rivet gun, the rivet gun pulls the rivet forward, the fixing ring 1 follows the rivet forward, and the connecting rod 22 pulls the inner rod of the telescopic sleeve 21 to extend. When the moving direction of the nail column is tilted, the connecting rod 22 links the fixing ring 1 to tilt to one side, thereby driving the telescopic sleeve 21 and the stress block 5 to tilt to one side, so that the stress is concentrated and transmitted to one side of the extrusion layer 3 through the stress block 5. The piezoelectric ceramics in the extrusion layer 3 generate current under the action of the extrusion force, and the buzzer 4 emits a sound through the current to remind the operator of the tilt problem in the riveting process so as to adjust the riveting direction.

Claims

1. A blind rivet anti-tilt device, characterized in that: The invention comprises a fixing ring (1), a guide mechanism (2), an extrusion layer (3), a buzzer (4) and a stress block (5); the fixing ring (1) is an annular structure, the fixing ring (1) is arranged on the outside of the nail column of the blind rivet, and the inner wall of the fixing ring (1) is fixedly connected to the side wall of the nail column; the guiding mechanism (2) is arranged on both sides of the fixing ring (1), the guiding mechanism (2) is arranged at the front end of the pull cap of the blind rivet, the guiding mechanism (2) comprises a telescopic sleeve rod (21) and a connecting rod (22), and the guiding mechanism (2) is used to In order to assist the nail column to move in the vertical direction, the guide mechanism (2) is connected to the stress block (5); the extrusion layer (3) is fixedly connected to the front end of the pull cap, the extrusion layer (3) is a square hollow structure, and the stress block (5) is arranged above the extrusion layer (3); the vertices of the lower wall of the stress block (5) are fixedly connected to the upper wall of the extrusion layer (3), the interior of the extrusion layer (3) is filled with piezoelectric ceramics, and the extrusion layer (3) is used to generate current when being squeezed so that the buzzer (4) has current passing through to alarm.

2. The blind rivet anti-tilting device according to claim 1 is characterized in that: The telescopic sleeve rod (21) comprises an inner rod and an outer rod, wherein the inner rod is arranged inside the outer rod and slides in the outer rod; the connecting rod (22) is an L-shaped structure, wherein one end of the connecting rod (22) is fixedly connected to the side wall of the fixing ring (1), and the other end of the connecting rod (22) is fixedly connected to the front end of the inner rod of the telescopic sleeve rod (21), and the connecting rod (22) is used to drive the inner rod to slide in the outer rod so that the telescopic sleeve rod (21) is extended.

3. The blind rivet anti-tilting device according to claim 2, characterized in that: The stress block (5) is arranged below the telescopic sleeve rod (21); the stress block (5) is a pentagonal prism structure; a pentagonal star-shaped depression is arranged on the lower wall of the stress block (5); the stress block (5) is used to transmit the extrusion force to the extrusion layer (3) when the nail column is tilted; the lower wall of the outer rod of the telescopic sleeve rod (21) is fixedly connected to the upper wall of the stress block (5).

4. The blind rivet anti-tilting device according to claim 3 is characterized in that: The buzzer (4) and the extrusion layer (3) are connected via an electric wire, so that a loop is formed between the buzzer (4) and the extrusion layer (3).

5. The blind rivet anti-tilting device according to claim 4, characterized in that: The upper wall of the extrusion layer (3) is made of elastic material.

6. The blind rivet anti-tilting device according to claim 5, characterized in that: The vertices of the five-pointed star-shaped recess correspond one-to-one to the vertices of the lower wall of the stress block (5).

7. The blind rivet anti-tilting device according to claim 6, characterized in that: Each vertex of the lower wall of the stress block (5) is provided with a spherical protrusion; and a plurality of cylindrical protrusions are provided on the surface of the spherical protrusion.

8. The blind rivet anti-tilting device according to claim 7, characterized in that: The diameter of the spherical protrusion is 1 cm.

9. The blind rivet anti-tilting device according to claim 8, characterized in that: The maximum extended length of the telescopic sleeve rod (21) is equal to the compressed length of the pull cap.

10. The blind rivet anti-tilting device according to claim 9, characterized in that: The buzzer (4) is fixedly arranged on the side wall of the fixing ring (1).

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