Rivet feeding auxiliary positioning mechanism

Abstract

A rivet feeding auxiliary positioning mechanism belongs to the technical field of material automation equipment and is composed of a base, a vibration disc, a straight vibration assembly, a first support, a material pushing assembly, a second support and a positioning clamping assembly, the straight vibration assembly is composed of a straight vibrator and a straight vibration rail arranged above the straight vibrator, and the straight vibration rail is connected with the vibration disc; the first support is installed on the base in a connected mode, the pushing assembly is connected with the tail end of the straight vibration rail, the second support is installed on the base in a connected mode, the positioning and clamping assembly is fixedly connected with the pushing assembly, rivets are fed to the straight vibration rail in a vibration mode through the vibration disc, and the rivets are fed into a U-shaped counter bore of the pushing block through the straight vibrator. The rivet is pushed to the positioning and clamping assembly through the pushing assembly, the rivet is positioned and clamped through the positioning and clamping assembly, it is guaranteed that the rivet does not deviate, next operation is conducted after the rivet gun grabs the rivet, the rivet positioning precision is improved, and the grabbing efficiency of the rivet gun is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of material automation equipment and relates to a material feeding and positioning mechanism, in particular to an auxiliary positioning mechanism for rivet feeding. Background Art

[0002] In the field of robotic manufacturing and automated assembly, accurate positioning and picking up small parts such as rivets are crucial. With the rapid development of industrial automation, robots are widely used in various assembly tasks to improve production efficiency and accuracy. However, when robots perform tasks such as picking up small parts such as rivets, they often face challenges in positioning accuracy and operating efficiency.

[0003] At present, the automatic feeding of rivets and other parts has begun to use robots, but it mainly relies on the robot's complex visual system and precise mechanical arm movement to achieve the positioning and picking of rivets and other parts. However, this method and equipment are not only costly, but also its efficiency and accuracy are often seriously affected when faced with a large number of rivets stacked in disorder. In addition, due to the small size and regular shape of rivets, they are prone to rolling and confusion on the vibrating plate or during mobile feeding, which further increases the difficulty of robot positioning and picking. Utility Model Content

[0004] The utility model aims at the shortcomings that the current rivet feeding positioning is difficult, not conducive to the clamping of robot mechanical arms, and the rivet feeding efficiency is low. An auxiliary positioning mechanism for rivet feeding is proposed, which can realize auxiliary positioning in the rivet feeding process, is conducive to the clamping of the mechanical arm, and improves the efficiency of the rivet feeding operation.

[0005] The rivet feeding auxiliary positioning mechanism provided in this application adopts the following technical solutions:

[0006] The rivet feeding auxiliary positioning mechanism comprises a base and a vibration plate; characterized in that the auxiliary positioning mechanism also comprises:

[0007] A direct vibration assembly, comprising a direct vibrator and a direct vibration track arranged above the direct vibrator, wherein the direct vibration track is connected to a vibration plate;

[0008] A first bracket, connected and mounted on the base, and used for adjusting and mounting the direct vibration assembly;

[0009] A material pushing assembly, connected to the end of the straight vibration track, used for receiving and pushing incoming materials of rivets on the straight vibration track;

[0010] A second bracket, connected and mounted on the base, and used for adjusting and mounting the pusher assembly;

[0011] The positioning and clamping assembly is connected and fixed to the pushing assembly and is used for positioning and clamping after the rivet is pushed.

[0012] By adopting the above technical scheme, the rivet is vibrated and loaded onto the straight vibration track by the vibration plate, the rivet is sent into the countersunk hole of the push block by the straight vibrator, the rivet is pushed to the positioning clamping assembly by the pushing assembly, the rivet is positioned and clamped by the positioning clamping assembly to ensure that the rivet is not offset, and the next step of operation is carried out after the rivet gun grabs it, which can improve the rivet positioning accuracy and the grabbing efficiency.

[0013] Furthermore, the first bracket is composed of a first cushion block, a first screw and a first adjustment plate, the first cushion block is connected and fixed to the base, the first adjustment plate is movably connected to the first cushion block through the first screw, and the straight vibrator is connected and fixed to the first adjustment plate.

[0014] By adopting the above technical solution, the direct vibration component is installed, supported and adjusted by the first bracket, and the height of the first adjustment plate can be fine-tuned through the rotational movement of the first screw, that is, the height of the direct vibration component can be fine-tuned to facilitate the connection between the direct vibration track and the vibration disk.

[0015] Furthermore, the second bracket is composed of a second cushion block, a second screw and a second adjustment plate, the second cushion block is fixedly connected to the base, the second adjustment plate is movably connected to the second cushion block through the second screw, and the pusher assembly is fixedly connected to the second adjustment plate.

[0016] By adopting the above technical solution, the pusher assembly is installed, supported and adjusted by the second bracket, and the height of the second adjustment plate can be fine-tuned through the rotational movement of the second screw, that is, the height of the pusher assembly can be fine-tuned to facilitate the connection between the pusher assembly and the straight vibration track.

[0017] Furthermore, the pushing assembly is composed of a mounting plate, a fixed slider, a pushing block, a side plate, a linear slider, a connecting plate, and a guide rod. The mounting plate is connected and fixed to the second adjusting plate, the side plate is connected and fixed to the mounting plate, the guide rod is fixed between the two side plates, the linear slider is slidably connected to the guide rod, the fixed slider is connected and fixed to the upper part of the mounting plate, the connecting plate is respectively connected and fixed to the linear slider and the pushing block, and the pushing block reciprocates along the fixed slider driven by the linear slider.

[0018] By adopting the above technical solution, the reciprocating movement of the linear slider drives the connecting plate and the push block to reciprocate relative to the fixed slider, thereby driving the movement of the rivet and the return movement of the push block.

[0019] Furthermore, the positioning clamping assembly consists of a fixed cylinder, a pressure block and a clamping head. The clamping head is connected and fixed to the cylinder shaft of the fixed cylinder. The pressure block is sleeved on the clamping head and then connected and fixed to the fixed cylinder. The pressure block is clamped and fixed to the mounting plate and the fixed slider.

[0020] By adopting the above technical solution, the cylinder shaft of the fixed cylinder drives the clamping head to perform telescopic movement in the pressure block to achieve the clamping and positioning of the rivet, thereby further improving the rivet positioning efficiency and accuracy.

[0021] Furthermore, a positioning groove is provided on the end surface of the clamping head, and a guide convex strip matching with the guide groove on the inner surface of the pressing block is provided on the shaft body of the clamping head, and the guide convex strip is axially distributed on the shaft body.

[0022] By adopting the above technical solution, a positioning groove is set on the end face to quickly position the rivet and prevent the rivet from moving during positioning; the guide convex strip is set to prevent circumferential rotation between the clamping head and the pressure block, causing coaxiality error between the rivet and the rivet gun, thereby improving positioning accuracy.

[0023] In summary, the present invention includes at least one of the following beneficial technical effects:

[0024] (1) The overall structure of the utility model is simple and can be used in combination with a vibration plate, thereby reducing the equipment cost in assembly line operations.

[0025] (2) Compared with the existing complex vision system and precise motion robot grasping operation, the robot arm operation path matched with the utility model is simpler, and the grasping speed of the robot arm for rivets can be significantly improved.

[0026] (3) The utility model can position rivets placed in disorder on the vibration plate with high positioning accuracy, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the connection structure between the utility model and the vibration plate.

[0028] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0029] Figure 3 It is a schematic diagram of the structure of the material pushing component in the utility model.

[0030] Figure 4 This is a schematic diagram of the push block structure in the utility model.

[0031] Figure 5 It is a schematic diagram of the structure of the positioning and clamping assembly in the utility model.

[0032] Figure 6 This is a schematic diagram of the structure of the clamping head in the utility model.

[0033] In the figure: vibration plate 1, rivet 2, straight vibration track 3, base 4, first bracket 5, first pad 5-1, first screw 5-2, first adjustment plate 5-3, straight vibrator 6, positioning clamping assembly 7, fixed cylinder 7-1, pressure block 7-2, clamping head 7-3, cylinder shaft 7-4, guide ridge 7-5, positioning groove 7-6, second bracket 8, pusher assembly 9, mounting plate 9-1, fixed slider 9-2, pusher block 9-3, U-shaped countersunk hole 9-3-1, side plate 9-4, linear slider 9-5, connecting plate 9-6, guide rod 9-7. DETAILED DESCRIPTION

[0034] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications to various equivalent forms of the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

[0035] Example 1

[0036] like Figure 1-4 As shown, the rivet feeding auxiliary positioning mechanism is composed of a base 4, a vibration plate 1, a direct vibration component, a first bracket 5, a pusher component 9, a second bracket 8 and a positioning clamping component 7. The direct vibration component is composed of a direct vibrator 6 and a direct vibration track 3 arranged above the direct vibrator 6, and the direct vibration track 3 is connected to the vibration plate 1; the first bracket 5 is connected and installed on the base 4, and is used for adjusting and installing the direct vibration component; the pusher component 9 is connected to the end of the direct vibration track 3, and is used for receiving and pushing the rivet 2 on the direct vibration track 3; the second bracket 8 is connected and installed on the base 4, and is used for adjusting and installing the pusher component 9; the positioning clamping component 7 is connected and fixed to the pusher component 9, and is used for positioning and clamping the rivet 2 after it is pushed. The rivet 2 is vibrated and loaded onto the straight vibration track 3 by the vibration disk 1, and the rivet 2 is sent into the U-shaped countersunk hole 9-3-1 of the push block by the straight vibrator 6. The rivet 2 is pushed to the positioning clamping assembly 7 by the pushing assembly 9, and the rivet 2 is positioned and clamped by the positioning clamping assembly 7 to ensure that the rivet 2 does not deviate, and the next step of operation is carried out after the rivet gun grabs it, thereby improving the rivet positioning accuracy and the grabbing efficiency of the rivet gun.

[0037] Example 2

[0038] In order to form a connection between the straight vibration track 3 and the vibration plate 1, which is beneficial to the movement and transportation of the rivet 2, the first bracket is used in this embodiment. Specifically, Figure 1-2As shown, the first bracket 5 is composed of a first cushion block 5-1, a first screw rod 5-2 and a first adjustment plate 5-3. The first cushion block 5-1 is connected and fixed to the base 4. The first adjustment plate 5-3 is movably connected to the first cushion block 5-1 through the first screw rod 5-2. The direct vibrator 6 is connected and fixed to the first adjustment plate 5-3. The direct vibration component is installed, supported and adjusted by the first bracket 5. The height of the first adjustment plate 5-3 is finely adjusted by the rotation of the first screw rod 5-2, that is, the height of the direct vibration component is finely adjusted.

[0039] In order to make the connection between the pusher assembly 9 and the straight vibration track 3, and facilitate the rivet 2 to enter the pusher assembly 9 in sequence, the second bracket 8 is used in this embodiment. Specifically, Figure 2-3 As shown, the second bracket 8 is composed of a second cushion block 8-1, a second screw rod 8-2 and a second adjustment plate 8-3. The second cushion block 8-1 is connected and fixed to the base 4. The second adjustment plate 8-3 is movably connected to the second cushion block 8-1 through the second screw rod 8-2. The pusher assembly 9 is connected and fixed to the second adjustment plate 8-3. The pusher assembly 9 is installed, supported and adjusted by the second bracket 8. The height of the second adjustment plate 8-3 is finely adjusted through the rotation of the second screw rod 8-2, that is, the height of the pusher assembly 9 is finely adjusted.

[0040] In order to increase the rivet positioning speed, the pusher assembly 9 is used in this embodiment. Specifically, Figure 3-4 As shown, the push assembly 9 is composed of a mounting plate 9-1, a fixed slider 9-2, a push block 9-3, a side plate 9-4, a linear slider 9-5, a connecting plate 9-6, and a guide rod 9-7. The mounting plate 9-1 is connected and fixed to the second adjustment plate 8-3, the side plate 9-4 is connected and fixed to the mounting plate 9-1, the guide rod 9-7 is fixed between the two side plates 9-4, the linear slider 9-5 is slidably connected to the guide rod 9-7, the fixed slider 9-2 is connected and fixed to the upper part of the mounting plate 9-1, the connecting plate 9-6 is respectively connected and fixed to the linear slider 9-5 and the push block 9-3, and the push block 9-3 reciprocates along the fixed slider 9-2 driven by the linear slider 9-5.

[0041] In order to improve the positioning accuracy of the rivet, a positioning clamping assembly is used in this embodiment. Specifically, Figure 4-5 As shown, the positioning clamping assembly 7 is composed of a fixed cylinder 7-1, a pressure block 7-2 and a clamping head 7-3. The clamping head 7-3 is connected and fixed to the cylinder shaft 7-4 of the fixed cylinder 7-1. The pressure block 7-2 is sleeved on the clamping head 7-3 and then connected and fixed to the fixed cylinder 7-1. The pressure block 7-2 is clamped and fixed to the mounting plate 9-1 and the fixed slider 9-2. The cylinder shaft 7-4 of the fixed cylinder 7-1 drives the clamping head 7-3 to perform telescopic movement in the pressure block 7-2 to achieve the clamping and positioning of the rivet, so as to further improve the efficiency and accuracy of rivet positioning.

[0042] Example 3

[0043] In order to reduce the circumferential rotation between the clamping head and the pressing block and prevent the rivet gun from grabbing the rivet and causing coaxial error with it, positioning grooves and guide convex strips are used in this embodiment. Specifically, Figure 6 As shown, the end surface of the clamping head 7-3 is provided with a positioning groove 7-6, and the shaft body of the clamping head 7-3 is provided with a guide convex strip 7-5 that matches the guide groove on the inner surface of the pressing block 7-2, and the guide convex strip 7-5 is axially distributed on the shaft body. The setting of the guide convex strip allows the clamping head to move axially only relative to the pressing block, ensuring that the clamping head does not deflect at an angle each time it extends to clamp the rivet, which is conducive to the gripping of the rivet gun.

[0044] like Figure 1-6 As shown, the working principle of the rivet feeding auxiliary positioning mechanism is as follows: the discharge port of the vibration plate 1 is connected to the straight vibration track 3, and the rivet 2 is pushed forward along the straight vibration track 3 under the action of the straight vibrator 6, and reaches the U-shaped countersunk hole 9-3-1 in the push block 9-3. The linear slider 9-5 in the push assembly 9 drives the push block 9-3 to push the rivet 2 to the positioning clamping assembly 7, and starts the fixed cylinder 7-1 to drive the clamping head 7-3 to extend, and the rivet 2 is positioned and clamped under the joint clamping of the positioning groove 7-6 on the end face of the clamping head 7-3 and the U-shaped countersunk hole 9-3-1 on the push block 9-3. The rivet gun moves to the positioning clamping position to accurately grab the rivet. The linear slider 9-5 and the fixed cylinder 7-1 are both single-control pneumatic cylinder structures. After the rivet 2 is grabbed, the fixed cylinder 7-1 drives the clamping head 7-3 to retract its original position, and the linear slider 9-5 drives the connecting plate 9-6 and the push block 9-3 back to their original positions, and the rivet is pushed and positioned and clamped for the next time.

Claims

1. A rivet feeding auxiliary positioning mechanism, comprising a base (4) and a vibration plate (1); characterized in that: The auxiliary positioning mechanism also includes: A direct vibration component comprises a direct vibrator (6) and a direct vibration track (3) arranged above the direct vibrator (6), wherein the direct vibration track (3) is connected to a vibration plate (1); A first bracket (5) is connected and mounted on the base (4) and is used for adjusting and mounting the direct vibration component; A material pushing assembly (9), connected to the end of the straight vibration track (3), and used for receiving and pushing incoming materials of the rivets (2) on the straight vibration track (3); A second bracket (8) is connected and mounted on the base (4) and is used for adjusting and mounting the pusher assembly (9); The positioning and clamping assembly (7) is connected and fixed to the pushing assembly (9) and is used for positioning and clamping after the rivet (2) is pushed.

2. The rivet feeding auxiliary positioning mechanism according to claim 1, characterized in that: The first bracket (5) is composed of a first cushion block (5-1), a first screw rod (5-2) and a first adjustment plate (5-3); the first cushion block (5-1) is connected and fixed to the base (4); the first adjustment plate (5-3) is movably connected to the first cushion block (5-1) via the first screw rod (5-2); and the straight vibrator (6) is connected and fixed to the first adjustment plate (5-3).

3. The rivet feeding auxiliary positioning mechanism according to claim 1, characterized in that: The second bracket (8) is composed of a second cushion block (8-1), a second screw rod (8-2) and a second adjustment plate (8-3); the second cushion block (8-1) is connected and fixed to the base (4); the second adjustment plate (8-3) is movably connected to the second cushion block (8-1) via the second screw rod (8-2); and the pusher assembly (9) is connected and fixed to the second adjustment plate (8-3).

4. The rivet feeding auxiliary positioning mechanism according to claim 1, characterized in that: The pusher assembly (9) is composed of a mounting plate (9-1), a fixed slider (9-2), a pusher block (9-3), a side plate (9-4), a linear slider (9-5), a connecting plate (9-6), and a guide rod (9-7). The mounting plate (9-1) is connected and fixed to the second adjustment plate (8-3), the side plate (9-4) is connected and fixed to the mounting plate (9-1), the guide rod (9-7) is fixed between the two side plates (9-4), the linear slider (9-5) is slidably connected to the guide rod (9-7), the fixed slider (9-2) is connected and fixed to the upper part of the mounting plate (9-1), the connecting plate (9-6) is respectively connected and fixed to the linear slider (9-5) and the pusher block (9-3), and the pusher block (9-3) is reciprocated along the fixed slider (9-2) driven by the linear slider (9-5).

5. The rivet feeding auxiliary positioning mechanism according to claim 1, characterized in that: The positioning clamping assembly (7) is composed of a fixed cylinder (7-1), a pressure block (7-2) and a clamping head (7-3); the clamping head (7-3) is connected and fixed to the cylinder shaft (7-4) of the fixed cylinder (7-1); the pressure block (7-2) is sleeved on the clamping head (7-3) and then connected and fixed to the fixed cylinder (7-1); the pressure block (7-2) is clamped and fixed to the mounting plate (9-1) and the fixed slide block (9-2).

6. The rivet feeding auxiliary positioning mechanism according to claim 5, characterized in that: The end surface of the clamping head (7-3) is provided with a positioning groove (7-6), and the shaft body of the clamping head (7-3) is provided with a guide convex strip (7-5) that matches the guide groove on the inner surface of the pressing block (7-2), and the guide convex strip (7-5) is distributed axially on the shaft body.

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