Self-puncturing rivet carrier tape type gun head mechanism

Abstract

The utility model discloses a self-puncturing rivet carrier tape type gun head mechanism which comprises a material belt, a gun head body, an ejector pin, a driving device, a detection claw and a sensor, a plurality of rivets are sequentially arranged on the material belt, a flow channel and a rivet outlet hole communicated with the flow channel are formed in the gun head body, and the material belt is arranged in the flow channel and moves in the direction of the flow channel; the ejector pin is arranged on one side of the rivet outlet hole, can stretch and retract in the direction of the rivet outlet hole and is used for knocking out the rivet located at the rivet outlet hole from the material belt; the driving device is used for driving the ejector pin to stretch; the detection claw is rotatably arranged on the gun head body and can rotate between a first position and a second position; the sensor is used for detecting whether rivets exist in the rivet outlet holes or not. The self-puncturing rivet carrier band type gun head mechanism is simple in structure, can adapt to rivets of various specifications, and solves the problem that when the situation that rivets are neglected to be installed on a material belt or the rivets fall off, judgment cannot be made, and empty riveting is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of rivet equipment, in particular to a self-piercing rivet carrier type gun head mechanism. Background Art

[0002] Self-piercing rivet equipment is used for fastening and riveting of various metal plates, pipes and other manufacturing industries. It is widely used in the riveting of electromechanical and light industrial products such as automobiles, aviation, railways, refrigeration, elevators, switches, instruments, furniture, decoration, etc.

[0003] The gun head mechanism in the existing self-piercing rivet equipment mainly adopts ratchet feeding. The gun head and the feeding structure are integrated together, the structure is complex, and it can only adapt to rivets of the same specification, and there is no rivet in place detection function. When there are missing nails or nails falling on the material belt, it is impossible to make a judgment, resulting in empty riveting. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a self-piercing rivet carrier-type gun head mechanism, which has a simple structure and can adapt to rivets of various specifications. It solves the problem of empty riveting caused by being unable to make a judgment when nails are missing or falling off on the material belt.

[0005] The utility model is realized by the following technical solutions:

[0006] A self-piercing rivet carrier type gun head mechanism, comprising:

[0007] A material strip, on which a plurality of rivets are arranged in sequence;

[0008] The gun head body has a flow channel and a nail outlet hole connected to the flow channel, and the material belt is arranged in the flow channel and runs along the direction of the flow channel;

[0009] An ejector pin is arranged at one side of the rivet hole and can be telescopically moved along the direction of the rivet hole, and is used to knock the rivet located at the rivet hole out of the material strip;

[0010] A gun nozzle is arranged at the other side of the rivet-out hole, and the rivet driven by the ejector pin is discharged from the gun nozzle;

[0011] A driving device, used for driving the ejector pin to perform telescopic movement;

[0012] A controller, electrically connected to the driving device;

[0013] A detection claw is rotatably disposed on the gun head body and can rotate between a first position and a second position;

[0014] A sensor, electrically connected to the controller, for detecting whether there is a rivet at the nail hole;

[0015] When there is no rivet at the nail hole, the detection claw is located at the first position, at which time the sensor has no induction and the driving device stops working;

[0016] When there is a rivet at the nail hole, the detection claw moves from the first position to the second position under the thrust of the rivet, and the sensor is triggered at this time. The controller controls the drive device to start, and the drive device controls the ejector pin to extend and fire the rivet at the nail hole into the gun nozzle.

[0017] Furthermore, the gun head body includes an upper fixing block and a lower fixing block, and the flow channel is formed between the upper fixing block and the lower fixing block.

[0018] Furthermore, the nail outlet hole is provided on the lower fixing block.

[0019] Furthermore, a flow groove is also provided on the lower fixed block, and the flow groove is connected to the nail outlet hole. When the material strip enters the interior of the gun head body, the rivet part on the material strip is received in the flow groove.

[0020] Furthermore, a column is protruding from the upper fixing block, and the detection claw can rotate around the column.

[0021] Furthermore, the column sleeve is provided with a torsion spring, one end of which is fixedly connected to the detection claw and the other end of which is in contact with the upper fixed block, so as to prevent the detection claw from moving from the first position to the second position.

[0022] Furthermore, a limiting groove is provided on the upper fixing block, and the detecting claw is at least partially located in the limiting groove. When the detecting claw is located at the second position, the detecting claw abuts against a retaining wall forming the limiting groove.

[0023] Furthermore, the self-piercing rivet carrier gun head mechanism further includes a non-return claw and an elastic member, wherein the non-return claw is movably arranged on the upper fixed block, and one end of the elastic member abuts against the non-return claw and the other end abuts against the upper fixed block;

[0024] When the material strip moves, the anti-return claw moves upward due to the thrust of the material strip, and when the rivet in the material strip moves to the rivet hole, the anti-return claw engages with the small hole on the material strip due to the elastic force of the elastic member.

[0025] Furthermore, the bottom of the anti-return claw is provided with an oblique tooth, and when the rivet in the material strip moves to the rivet hole, the oblique tooth is engaged with the small hole on the material strip;

[0026] When the material belt continues to move, the material belt pushes the inclined surface of the bevel tooth so that the bevel tooth disengages from the small hole;

[0027] When the material belt moves in the reverse direction, the back side of the bevel teeth prevents the material belt from running in the reverse direction.

[0028] Furthermore, a limiting hole is provided on the anti-return claw, and a limiting column matched with the limiting hole is protruded on the upper fixing block, and the anti-return claw moves along the direction of the limiting hole.

[0029] Compared with the prior art, the advantages of the present invention are:

[0030] 1. By setting the detection claw and the sensor, the detection claw can rotate around the column. The detection claw moves from the first position to the second position under the thrust of the rivet. At this time, the sensor is triggered, the controller controls the driving device to start, and the driving device controls the ejector to extend and fire the rivet at the rivet hole into the gun nozzle. The self-piercing rivet carrier gun head mechanism has a simple structure and can adapt to rivets of various specifications. It solves the problem of empty riveting caused by failure to make judgments when nails are missing or dropped on the material belt.

[0031] 2. By setting a non-return claw and an elastic member, and setting a bevel tooth at the bottom of the non-return claw, the non-return claw will slide upward under the force of the material belt during the dragging process. When the rivet in the material belt moves to the rivet hole, the bevel tooth engages with the small hole on the material belt; when the material belt continues to move, the material belt pushes the inclined surface of the bevel tooth to make the bevel tooth rise and disengage from the small hole; when the material belt moves in the reverse direction, the back of the bevel tooth prevents the material belt from running in the reverse direction. When you want to pull the material belt back, you can manually lift the non-return claw so that the material belt can be taken out. The operation is simple and convenient, and it prevents the reverse movement of the material belt during work from causing empty riveting. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a self-piercing rivet carrier-type gun head mechanism according to an embodiment of the utility model;

[0033] Figure 2 A schematic diagram of the partial structure of the self-piercing rivet carrier gun head mechanism Figure 1 ;

[0034] Figure 3 It is a partial cross-sectional view of a self-piercing rivet carrier-type gun head mechanism;

[0035] Figure 4 A schematic diagram of the partial structure of the self-piercing rivet carrier gun head mechanism Figure 2 ;

[0036] Figure 5 A schematic diagram of the partial structure of the self-piercing rivet carrier gun head mechanism Figure 3 ;

[0037] Figure 6 is a structural schematic diagram of the lower fixed block;

[0038] Figure 7 The structure of the anti-return claw Figure 1 ;

[0039] Figure 8 The structure of the anti-return claw Figure 2 ;

[0040] Fig. 9 This is a circuit control block diagram of a self-piercing rivet carrier gun head mechanism.

[0041] 1. Rivet; 2. Material strip; 20. Small hole; 3. Gun head body; 30. Flow channel; 31. Nail hole; 32. Upper fixed block; 320. Post; 321. Limiting groove; 322. Block wall; 323. Limiting post; 33. Lower fixed block; 330. Flow groove; 34. Shell; 4. Ejector; 5. Gun nozzle; 6. Drive device; 7. Controller; 8. Detection claw; 9. Sensor; 10. Torsion spring; 11. Check claw; 110. Bevel teeth; 111. Bevel; 112. Back; 113. Limiting hole; 12. Elastic part. DETAILED DESCRIPTION

[0042] The following is a further non-restrictive detailed description of the utility model technical solution in conjunction with the preferred embodiment and its accompanying drawings. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limitations on the utility model.

[0043] like Figure 1-Figure 9As shown, a self-piercing rivet carrier-type gun head mechanism of one embodiment of the utility model comprises a material belt 2, a gun head body 3, an ejector pin 4, a gun nozzle 5, a driving device 6, a controller 7, a detection claw 8 and a sensor 9, wherein a plurality of rivets 1 are arranged in sequence on the material belt 2, a flow channel 30 and a nail outlet hole 31 connected to the flow channel 30 are arranged inside the gun head body 3, and the material belt 2 is arranged in the flow channel 30 and runs along the direction of the flow channel 30. The ejector pin 4 is arranged on one side of the nail outlet hole 31 and can move telescopically along the direction of the nail outlet hole 31, and the ejector pin 4 is used to knock out the rivet 1 located at the nail outlet hole 31 from the material belt 2, and the gun nozzle 5 is arranged on the other side of the nail outlet hole 31, and the rivet 1 knocked out by the ejector pin 4 is discharged from the gun nozzle 5. The driving device 6 is used to drive the ejector pin 4 to perform telescopic movement. The controller 7 is electrically connected to the driving device 6. The detection claw 8 is rotatably arranged on the gun head body 3 and can rotate between a first position and a second position. The sensor 9 is electrically connected to the controller 7 to detect whether there is a rivet 1 at the nail hole 31. When there is no rivet 1 at the nail hole 31, the detection claw 8 is located at the first position. At this time, the sensor 9 has no induction and the driving device 6 stops working. When there is a rivet 1 at the nail hole 31, the detection claw 8 moves from the first position to the second position under the thrust of the rivet 1. At this time, the sensor 9 is triggered, and the controller 7 controls the driving device 6 to start. The driving device 6 controls the ejector pin 4 to extend and fire the rivet 1 at the nail hole 31 into the gun nozzle 5. In this embodiment, the driving device 6 uses a cylinder.

[0044] like Figure 3 As shown, the gun head body 3 includes an upper fixing block 32 , a lower fixing block 33 and a shell 34 . The upper fixing block 32 and the lower fixing block 33 are both fixed in the shell 34 , and a flow channel 30 is formed between the upper fixing block 32 and the lower fixing block 33 .

[0045] like Figure 4 As shown, a column 320 is protruding from the upper fixing block 32 , and the detection claw 8 can rotate around the column 320 .

[0046] The column 320 is sleeved with a torsion spring 10 , one end of which is fixedly connected to the detection claw 8 , and the other end of which is in contact with the upper fixed block 32 , so as to prevent the detection claw 8 from moving from the first position to the second position.

[0047] like Figure 5 As shown, a limiting groove 321 is also provided on the upper fixed block 32, and the detection claw 8 is at least partially located in the limiting groove 321. When the detection claw 8 is located at the second position, the detection claw 8 abuts against a retaining wall 322 forming the limiting groove 321, and the retaining wall 322 is used to limit the continued rotation of the detection claw 8.

[0048] like Figure 4As shown, the self-piercing rivet carrier gun head mechanism also includes a non-return claw 11 and an elastic member 12. The non-return claw 11 is movably arranged on the upper fixed block 32. One end of the elastic member 12 abuts against the non-return claw 11, and the other end abuts against the upper fixed block 32. When the material belt 2 moves, the non-return claw 11 moves upward due to the thrust of the material belt 2. When the rivet 1 in the material belt 2 moves to the rivet hole 31, the non-return claw 11 is clamped with the small hole 20 on the material belt 2 under the elastic force of the elastic member 12. The elastic member 12 can be selected from springs, shrapnel and other components.

[0049] Specifically, refer to Figure 7 and Figure 8 A bevel tooth 110 is provided at the bottom of the anti-return claw 11. When the rivet 1 in the material strip 2 moves to the rivet hole 31, the bevel tooth 110 engages with the small hole 20 on the material strip 2; when the material strip 2 continues to move, the material strip 2 pushes the inclined surface 111 of the bevel tooth 110 to make the bevel tooth 110 disengage from the small hole 20; when the material strip 2 moves in the reverse direction, the back side 112 of the bevel tooth 110 prevents the material strip 2 from running in the reverse direction.

[0050] like Figure 4 As shown, a limiting hole 113 is provided on the anti-return claw 11 , and a limiting column 323 matched with the limiting hole 113 is protruded on the upper fixing block 32 , and the anti-return claw 11 moves along the direction of the limiting hole 113 .

[0051] like Figure 3 and Figure 6 As shown, a nail hole 31 and a flow groove 330 are provided on the lower fixed block 33 , and the flow groove 330 is connected with the nail hole 31 . When the material strip 2 enters the interior of the gun head body 3 , part of the rivet 1 on the material strip 2 is received in the flow groove 330 .

[0052] When working, refer to Figure 3 and Figure 4 , the material strip 2 filled with rivets 1 is moved from left to right along the direction of the flow channel 30 by the drag force. When the rivet 1 moves to the rivet hole 31, the detection claw 8 rotates counterclockwise around the column 320 under the extrusion force of the rivet 1, so that the detection claw 8 rotates from the first position to the second position. At this time, the sensor 9 is triggered, and the controller 7 controls the driving device 6 to start. The driving device 6 controls the ejector 4 to extend and fire the rivet 1 at the rivet hole 31 into the gun nozzle 5 to complete the riveting. Then the material strip 2 continues to move to the right to complete the firing and riveting of the next rivet 1, and the cycle is repeated. In addition, when the material strip 2 is being dragged, the anti-return claw 11 will slide upward due to the force of the material strip 2. When the rivet 1 moves to the rivet hole 31, the oblique teeth 110 at the bottom of the anti-return claw 11 just engage with the small hole 20 on the side of the material strip 2, and the material strip 2 cannot be pulled back at this time. When you want to pull it back, you can manually lift the anti-return claw 11 and the material strip 2 can be taken out.

[0053] The beneficial effects of the utility model are as follows:

[0054] 1. By setting the detection claw 8 and the sensor 9, the detection claw 8 can rotate around the column 320. The detection claw 8 moves from the first position to the second position under the thrust of the rivet 1. At this time, the sensor 9 is triggered, and the controller 7 controls the driving device 6 to start. The driving device 6 controls the ejector 4 to extend and fire the rivet 1 at the nail hole 31 into the gun nozzle 5. The self-piercing rivet carrier gun head mechanism has a simple structure and can adapt to rivets of various specifications. It solves the problem that when there are missing nails or nails falling on the material belt, it is impossible to make a judgment, resulting in empty riveting.

[0055] 2. By setting the anti-return claw 11 and the elastic member 12, and setting the bevel tooth 110 at the bottom of the anti-return claw 11, the anti-return claw 11 will slide upwards under the force of the material belt 2 during the dragging process of the material belt 2. When the rivet 1 in the material belt 2 moves to the rivet hole 31, the bevel tooth 110 engages with the small hole 20 on the material belt 2; when the material belt 2 continues to move, the material belt 2 pushes the inclined surface 111 of the bevel tooth 110 to make the bevel tooth 110 rise and disengage from the small hole 20; when the material belt 2 moves in the reverse direction, the back surface 112 of the bevel tooth 110 prevents the material belt 2 from running in the reverse direction. When you want to pull the material belt 2 back, you can manually lift the anti-return claw 11 so that the material belt 2 can be taken out. The operation is simple and convenient, and it prevents the reverse movement of the material belt 2 during work to cause empty riveting.

[0056] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A self-piercing rivet carrier gun head mechanism, characterized in that: include: A material strip (2) on which a plurality of rivets (1) are arranged in sequence; A gun head body (3) is provided with a flow channel (30) and a nail outlet hole (31) connected to the flow channel (30), and the material belt (2) is arranged in the flow channel (30) and runs along the direction of the flow channel (30); An ejector pin (4) is arranged on one side of the rivet hole (31) and can be telescopically moved along the direction of the rivet hole (31), and is used to knock the rivet (1) located at the rivet hole (31) out of the material strip (2); A gun nozzle (5) is arranged on the other side of the rivet hole (31), and the rivet (1) driven by the ejector pin (4) is discharged from the gun nozzle (5); A driving device (6) for driving the ejector pin (4) to perform telescopic movement; A controller (7) electrically connected to the driving device (6); A detection claw (8) is rotatably disposed on the gun head body (3) and is rotatable between a first position and a second position; A sensor (9) is electrically connected to the controller (7) and is used to detect whether a rivet (1) is present at the rivet hole (31); When there is no rivet (1) at the rivet hole (31), the detection claw (8) is located at the first position, at which time the sensor (9) has no induction and the driving device (6) stops working; When there is a rivet (1) at the nail hole (31), the detection claw (8) moves from the first position to the second position under the thrust of the rivet (1), and at this time the sensor (9) is triggered, the controller (7) controls the drive device (6) to start, and the drive device (6) controls the ejector pin (4) to extend and fire the rivet (1) at the nail hole (31) into the gun nozzle (5).

2. The self-piercing rivet carrier gun head mechanism according to claim 1, characterized in that: The gun head body (3) comprises an upper fixing block (32) and a lower fixing block (33), and the flow channel (30) is formed between the upper fixing block (32) and the lower fixing block (33).

3. The self-piercing rivet carrier gun head mechanism according to claim 2, characterized in that: The lower fixing block (33) is provided with the nail outlet hole (31).

4. The self-piercing rivet carrier gun head mechanism according to claim 3, characterized in that: The lower fixed block (33) is also provided with a flow groove (330), and the flow groove (330) is connected with the nail outlet hole (31). When the material strip (2) enters the interior of the gun head body (3), the rivet (1) on the material strip (2) is partially received in the flow groove (330).

5. The self-piercing rivet carrier gun head mechanism according to claim 2, characterized in that: A column (320) is protruding from the upper fixing block (32), and the detection claw (8) can rotate around the column (320).

6. The self-piercing rivet carrier gun head mechanism according to claim 5, characterized in that: The upright column (320) is sleeved with a torsion spring (10), one end of which is fixedly connected to the detection claw (8) and the other end of which is in contact with the upper fixed block (32), so as to prevent the detection claw (8) from moving from the first position to the second position.

7. The self-piercing rivet carrier gun head mechanism according to claim 2, characterized in that: The upper fixed block (32) is also provided with a limiting groove (321), and the detection claw (8) is at least partially located in the limiting groove (321). When the detection claw (8) is located at the second position, the detection claw (8) abuts against a retaining wall (322) forming the limiting groove (321).

8. The self-piercing rivet carrier gun head mechanism according to claim 2, characterized in that: The self-piercing rivet carrier gun head mechanism further comprises a non-return claw (11) and an elastic member (12); the non-return claw (11) is movably arranged on the upper fixed block (32); one end of the elastic member (12) abuts against the non-return claw (11) and the other end abuts against the upper fixed block (32); When the material strip (2) moves, the anti-return claw (11) moves upward due to the thrust of the material strip (2), and when the rivet (1) in the material strip (2) moves to the rivet hole (31), the anti-return claw (11) engages with the small hole (20) on the material strip (2) under the elastic force of the elastic member (12).

9. The self-piercing rivet carrier gun head mechanism according to claim 8, characterized in that: The bottom of the anti-return claw (11) is provided with an oblique tooth (110), and when the rivet (1) in the material strip (2) moves to the rivet hole (31), the oblique tooth (110) engages with the small hole (20) on the material strip (2); When the material belt (2) continues to move, the material belt (2) pushes the inclined surface (111) of the inclined tooth (110) so that the inclined tooth (110) is separated from the small hole (20); When the material belt (2) moves in the reverse direction, the back side (112) of the bevel teeth (110) prevents the material belt (2) from running in the reverse direction.

10. The self-piercing rivet carrier gun head mechanism according to claim 8, characterized in that: The anti-return claw (11) is provided with a limiting hole (113), and the upper fixed block (32) is provided with a limiting column (323) matched with the limiting hole (113), and the anti-return claw (11) moves in the direction of the limiting hole (113).

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