An automatic screw assembly device

Abstract

This utility model discloses an automatic screw assembly device, which includes a vibratory feeding assembly, a receiving and positioning assembly, a combined displacement slide, and a gripping and tightening assembly. The vibratory feeding assembly includes a feeding port; the receiving and positioning assembly includes a positioning block with a receiving hole on its outer periphery; the gripping and tightening assembly is connected to the slide of the combined displacement slide; when the vibratory feeding assembly is in the activated state, the receiving hole of the positioning block in the receiving and positioning assembly is driven by a transverse cylinder to contact the feeding port of the vibratory feeding assembly; when the vibratory feeding assembly is in the deactivated state, the positioning block in the receiving and positioning assembly is driven by a transverse cylinder to return to its initial position and rotated 90° by a rotary cylinder. This utility model can achieve semi-automatic production by highly integrating multi-functional modules required for each process step in the product assembly process, without relying on the skill level of assembly personnel, greatly improving product quality stability and assembly accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of automatic screw assembly technology, and in particular relates to an automatic screw assembly device. Background Technology

[0002] Screws, as a common fastener, are widely used in various mechanical assemblies and electronic equipment manufacturing to ensure reliable connection and fixation of components. Especially in the assembly of small, precision components (such as nine-circuit structural components in circuit systems), multiple screws are often needed to secure a single product at multiple points. These products typically have complex structures, high assembly precision requirements, and strict technical requirements regarding the tightening torque and positional consistency of the screws.

[0003] In existing technologies, such multi-screw assembly operations mainly rely on manual operation or semi-automated equipment, which presents the following technical problems: 1. Dispersed processes and low efficiency: Since each screw assembly position is processed independently, it needs to be completed through multiple separate processes. Operators need to frequently switch equipment, resulting in a fragmented production process, low overall assembly efficiency, and long cycle time; 2. Difficulty in guaranteeing accuracy: Manual operation is easily affected by fatigue and experience differences. It is difficult to maintain consistent screw tightening torque, perpendicularity, and thread entry accuracy, which may lead to problems such as stripping, misalignment, or insufficient tightening force. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides an automatic screw assembly device.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] Vibrating discharge assembly, including discharge port;

[0007] The material receiving and positioning assembly includes a transverse cylinder, a rotary cylinder, and a positioning block. The outer periphery of the positioning block has a material receiving hole, and the positioning block is connected to the output ends of both the transverse cylinder and the rotary cylinder.

[0008] A combined displacement slide is mounted above the material receiving and positioning assembly; and

[0009] The gripping and tightening assembly is connected to the slide of the combined displacement slide table. The initial position of the gripping and tightening assembly is set above the initial position of the positioning block in the receiving and positioning assembly.

[0010] When the vibrating discharge assembly is in the start-up state, the receiving hole of the positioning block in the receiving and positioning assembly is driven by the transverse cylinder to contact the discharge port of the vibrating discharge assembly.

[0011] When the vibrating discharge assembly is in the off state, the positioning block in the receiving and positioning assembly is driven back to the initial position by the transverse cylinder and rotated 90° by the rotary cylinder.

[0012] In some embodiments, a positioning sensor is provided inside the receiving hole of the material receiving and positioning assembly.

[0013] In some embodiments, the combined displacement slide includes:

[0014] support;

[0015] The first slide is horizontally mounted on top of the support frame; and

[0016] The second slide is set perpendicular to the first slide, and the second slide is connected to the slide base of the first slide. The slide base of the second slide is connected to the gripping and tightening assembly.

[0017] In some embodiments, the gripping and tightening assembly includes:

[0018] The gripper includes a gripper claw, the top of which has a laterally extending connecting plate. One end of the connecting plate is connected to the slide of the combined displacement slide table, and the connecting plate has a through hole.

[0019] A lifting cylinder is positioned above the gripper and connected to the slide of the combined displacement slide table; and

[0020] The tightener is connected at the top to the output end of the lifting cylinder, and at least a portion of the outer circumference diameter of the tightener is smaller than the diameter of the through hole in the connecting plate;

[0021] The center of the gripper, the through hole in the connecting plate, the output end of the lifting cylinder, and the tightener are all located on the same vertical line.

[0022] In some embodiments, the gripper's gripper claw is an electric gripper connected to a detachable clamping jaw.

[0023] In some embodiments, the tightener includes:

[0024] The screwdriver, with its top connected to the output end of the lifting cylinder in the gripping and tightening assembly; and

[0025] A limiting block is installed on the screwdriver, and the outer diameter of the limiting block is larger than the diameter of the through hole in the gripping and tightening assembly.

[0026] In some embodiments, the automatic screw assembly device further includes a transverse slide, on which a positioning seat is provided.

[0027] In some embodiments, the transverse slide is provided with a limit sensor.

[0028] In some embodiments, the automatic screw assembly device further includes a control component, which is electrically connected to the vibration discharge component, the receiving and positioning component, the combined displacement slide, the gripping and tightening component, the lateral slide, and the limit sensor.

[0029] The beneficial effects of this utility model are: by highly integrating the multi-functional modules required for each process step in the product assembly process, this utility model realizes semi-automatic production, without relying on the skill level of assembly personnel, which greatly improves the stability of product quality and assembly accuracy. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention in one embodiment;

[0032] Figure 2 This is a schematic diagram of the structure of the vibrating discharge assembly and the receiving and positioning assembly in one embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the combined displacement slide and gripping and tightening assembly in one embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the transverse sliding table and limit sensor in one embodiment of the present invention. Detailed Implementation

[0035] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0036] like Figure 1 As shown, an automatic screw assembly device is provided, including a vibratory feeding assembly 10, a receiving and positioning assembly 20, a combined displacement slide 30, a gripping and tightening assembly 40, and a control assembly 50.

[0037] like Figure 1 As shown, in one embodiment, the control component 50 is electrically connected to the vibrating discharge component 10, the receiving and positioning component 20, the combined displacement slide 30, the gripping and tightening component 40, the transverse slide 60, and the limit sensor 602. It receives parameter signals transmitted by the position sensor 204 and the limit sensor 602 and controls the working state of the vibrating discharge component 10, the receiving and positioning component 20, the combined displacement slide 30, the gripping and tightening component 40, and the transverse slide 60.

[0038] The vibrating discharge assembly 10 includes a discharge port 101.

[0039] like Figure 2 As shown, in one embodiment, the vibrating discharge assembly 10 is a box structure, with the discharge port 101 located on the outside of the box and at a height from the ground, and the top cover of the box can be opened.

[0040] It is understood that the vibrating discharge assembly 10 vibrates the screws placed inside to be discharged from the discharge port 101. The shape of the discharge port 101 is adapted to the shape of the screws. The vibrating discharge assembly 10 uses existing technology. Preferably, the internal structure is enclosed in a box-shaped shell. Alternatively, the shell can be omitted, or a discharge observation window can be opened in the box-shaped shell to observe the internal working status in real time and detect problems in time. At the same time, the opening cover of the box-shaped shell can also be set on the side for easier repair.

[0041] The material receiving and positioning assembly 20 includes a transverse cylinder 201, a rotary cylinder 202, and a positioning block 203. The outer periphery of the positioning block 203 has a material receiving hole 2031, and the positioning block 203 is connected to the output ends of both the transverse cylinder 201 and the rotary cylinder 202.

[0042] like Figure 2 As shown, in one embodiment, the receiving and positioning assembly 20 further includes a receiving support frame 205. The transverse cylinder 201, the rotary cylinder 202, and the positioning block 203 are all mounted on the support frame. When the positioning block 203 is in its initial state, a receiving hole 2031 in the positioning block 203 is at the same horizontal plane as the discharge port 101 of the vibrating discharge assembly 10.

[0043] It is understandable that, in order to shorten the distance that the positioning block 203 needs to move when receiving materials, the receiving support frame 205 is set close to the discharge port 101 of the vibrating discharge assembly 10.

[0044] When the vibrating discharge assembly 10 is in the start state, the receiving hole 2031 of the positioning block 203 in the receiving and positioning assembly 20 is driven by the transverse cylinder 201 to contact the discharge port 101 of the vibrating discharge assembly 10. When the vibrating discharge assembly 10 is in the closed state, the positioning block 203 in the receiving and positioning assembly 20 is driven by the transverse cylinder 201 to return to the initial position and is driven by the rotary cylinder 202 to rotate 90°.

[0045] like Figure 2 As shown, in one embodiment, a positioning sensor 204 is provided in the receiving hole 2031 of the receiving positioning component 20.

[0046] Understandably, the control component 50 controls the start of the vibrating discharge component 10 and simultaneously controls the start of the transverse cylinder 201 in the receiving and positioning component 20. The receiving hole 2031 of the positioning block 203 in the receiving and positioning component 20 is driven to move and connect with the discharge port 101 of the vibrating discharge component 10 through the transverse cylinder 201. The screw vibrates from the discharge port 101 of the vibrating discharge component 10 into the receiving hole 2031 of the positioning block 203 in the receiving and positioning component 20. When the positioning sensor 204 in the receiving and positioning assembly 20 detects the screw, it transmits a parameter signal to the control assembly 50. The control assembly 50 controls the vibration discharge assembly 10 to close and simultaneously controls the transverse cylinder 201 in the receiving and positioning assembly 20 to start. The positioning block 203 is driven back to its initial position by the transverse cylinder 201. At the same time, the control assembly 50 controls the rotary cylinder 202 in the receiving and positioning assembly 20 to rotate. The positioning block 203 is driven to rotate 90° by the rotary cylinder 202. The receiving hole 2031 of the positioning block 203 in the receiving and positioning assembly 20 rotates from the horizontal direction to the vertical direction, and the screw inside also rotates to the vertical assembly direction. After the gripping and tightening component 40 grips the screw inside the receiving hole 2031, the control component 50 controls the rotary cylinder 202 in the receiving positioning component 20 to rotate. The positioning block 203 in the receiving positioning component 20 is driven by the rotary cylinder 202, and the receiving hole 2031 of the positioning block 203 in the receiving positioning component 20 returns to the horizontal direction. The above operation is repeated.

[0047] The combined displacement slide 30 is mounted above the material receiving and positioning assembly 20.

[0048] like Figure 3 As shown, in one embodiment, the combined displacement slide 30 includes a bracket 301, a first slide 302, and a second slide 303. The first slide 302 is horizontally mounted on the top of the bracket 301; the second slide 303 is vertically arranged relative to the first slide 302, and the second slide 303 is connected to the slide base of the first slide 302. The slide base of the second slide 303 is connected to the gripping and tightening assembly 40.

[0049] It is understandable that the combined displacement slide 30 is existing technology. For example... Figure 3 As shown, in one embodiment, the gripping and tightening assembly 40 moves vertically along the guide rail of the second slide 303, and the second slide 303 moves horizontally along the guide rail of the first slide 302, thereby causing the gripping and tightening assembly 40 to move horizontally. Other slide forms are also possible. Further, in another embodiment, the second slide 303 is divided into two, each vertically connected to the support column of the bracket 301. The first slide 302 is horizontally arranged with its two ends opposite each other, connected to the slide seats of the two second slides 303. The slide seats of the first slide 302 are connected to the gripping and tightening assembly 40.

[0050] The gripping and tightening assembly 40 is connected to the slide of the combined displacement slide 30, and the initial position of the gripping and tightening assembly 40 is set above the initial position of the positioning block 203 in the receiving and positioning assembly 20.

[0051] like Figure 3 As shown, in one embodiment, the gripping and tightening assembly 40 includes a gripper 401, a lifting cylinder 402, and a tightener 403. The gripper 401 includes a gripper claw 4011. In one embodiment, the gripper claw 4011 is preferably an electric claw, which is connected to a detachable gripper claw 4011a. The gripper 4011 has a laterally extending connecting plate 4012 at its top. One end of the connecting plate 4012 is connected to the slide of the combined displacement slide 30. The connecting plate 4012 has a through hole 4013. The lifting cylinder 402 is located above the gripper 401 and is connected to the slide of the combined displacement slide 30. The top of the tightener 403 is connected to the output end of the lifting cylinder 402. At least a portion of the outer circumference diameter of the tightener 403 is smaller than the diameter of the through hole 4013 in the connecting plate 4012. The center of the gripper 4011, the through hole 4013 in the connecting plate 4012, the output end of the lifting cylinder 402, and the tightener 403 are located on the same vertical line.

[0052] Understandably, the control component 50 controls the gripping claw 4011 of the gripping and tightening component 40 to grip the screw in the receiving hole 2031 of the positioning block 203 in the receiving and positioning component 20 below the initial position. Then, the control component 50 controls the combined displacement slide 30 to start, causing the gripping and tightening component 40 to move to the screw-in position of the product and controls the gripping claw 4011 of the tightening component to place the screw into the screw-in hole of the product. Next, the control component 50 controls the lifting cylinder 402 to start, and the lifting cylinder 402 drives the tightener 403 to descend and pass through the through hole 4013 in the gripping and tightening component 40 to tighten the screw in the screw-in hole to the specified depth. The parameter of the specified depth can be set by the control component 50. Next, the control component 50 controls the output end of the lifting cylinder 402 to reset and simultaneously controls the combined displacement slide 30 to start, driving the gripping and tightening component 40 to move to the initial position. Then, the control component 50 controls the gripping claw 4011 of the gripping and tightening component 40 to grip the screw in the receiving hole 2031 according to the parameters and move it to another screw-in position of the product, and then repeats the above operation.

[0053] Specifically, the gripping claw 4011 in the gripping and tightening assembly 40 is preferably an electric claw. To adapt to different products, a clamping jaw 4011a is installed in front of the electric claw. To facilitate the replacement of clamping jaws 4011a of different specifications to accommodate more products, the clamping jaw 4011a and the electric claw are preferably detachably connected, and the clamping jaw 4011a moves under the drive of the electric claw. Furthermore, the operation of the control assembly 50 controlling the gripping claw 4011 of the tightening assembly to place the screw into a screw-in hole of the product is specifically as follows: after the control assembly 50 controls the electric claw to grip the screw and place it above the screw-in hole, the control assembly 50 controls the electric claw to slightly open a little so that the screw falls into the screw-in hole. At this time, because the clamping jaw 4011a has a certain length and the clamping jaw 4011a is slightly loosened by the electric claw, the clamping jaw 4011a can guide the screw to fall into the screw-in hole, thus playing a guiding role.

[0054] like Figure 3 As shown, in one embodiment, the tightening device 403 includes a screwdriver 4031 and a limiting block 4032. The top of the screwdriver 4031 is connected to the output end of the lifting cylinder 402 in the gripping and tightening assembly 40; the limiting block 4032 is disposed on the screwdriver 4031, and the outer circumferential diameter of the limiting block 4032 is larger than the diameter of the through hole 4013 in the gripping and tightening assembly 40.

[0055] Understandably, when the screwdriver 4031 rotates and enters the screw hole of the product, a spring must be provided above the screwdriver 4031 to cushion the impact, otherwise the screw insertion depth cannot be controlled. The limit block 4032 is fixed to the screwdriver 4031 (its position is adjustable up and down). As the screwdriver 4031 descends, it hits the connecting plate 4012 in the gripping and tightening assembly 40 below, thus physically limiting the descent depth of the screwdriver 4031. This ensures consistent screw assembly, and the assembly depth can be controlled by adjusting the position of the limit block 4032.

[0056] like Figure 4 As shown, in one embodiment, the automatic screw assembly device further includes a transverse slide 60, and a positioning seat 601 is provided on the slide of the transverse slide 60.

[0057] Understandably, the product is placed in the positioning seat 601 of the transverse slide 60, and the control component 50 controls the positioning seat 601 in the transverse slide 60 to move from the initial position to the assembly position. After one product is assembled, the control component 50 controls the positioning seat 601 in the transverse slide 60 to move from the assembly position back to the initial position, and so on. By setting up the transverse slide 60, the operator can stay away from the assembly area, reducing danger.

[0058] like Figure 3 As shown, in one embodiment, the transverse slide 60 is provided with a limit sensor 602. In one embodiment, the limit sensor 602 is preferably a safety light curtain.

[0059] Understandably, the limit sensor 602 is used to protect workers. When the limit sensor 602 detects a worker's hand, it transmits a parameter signal to the control component 50, at which point the automatic screw assembly device cannot operate.

[0060] like Figure 1 As shown, in order to integrate functional modules, reduce the footprint of the automatic screw assembly device, and facilitate normal operation by workers, in one embodiment, the automatic screw assembly device also includes a workbench 70, a vibration discharge component 10, a receiving and positioning component 20, a combined displacement slide 30, a gripping and tightening component 40, and a transverse slide 60, all of which are arranged on the workbench 70. In the combined displacement slide 30, the first slide 302 is arranged perpendicularly to the transverse slide 60, and the position to be assembled of the positioning seat 601 in the transverse slide 60 is adjacent to the receiving and positioning component 20.

[0061] The working process of this utility model is as follows:

[0062] First, the worker places the product to be assembled into the positioning seat 601 in the transverse slide 60, and the control component 50 controls the positioning seat 601 in the transverse slide 60 to move from the initial position to the assembly position.

[0063] Next, the control component 50 controls the vibration discharge component 10 to start, and at the same time controls the transverse cylinder 201 in the receiving and positioning component 20 to start. The receiving hole 2031 of the positioning block 203 in the receiving and positioning component 20 is driven to move and connect with the discharge port 101 of the vibration discharge component 10 through the transverse cylinder 201. The screw vibrates from the discharge port 101 of the vibration discharge component 10 into the receiving hole 2031 of the positioning block 203 in the receiving and positioning component 20.

[0064] Next, the position sensor 204 in the receiving and positioning assembly 20 detects the screw and transmits the parameter signal to the control assembly 50. The control assembly 50 controls the vibration discharge assembly 10 to close and simultaneously controls the transverse cylinder 201 in the receiving and positioning assembly 20 to start. The positioning block 203 is driven back to its initial position by the transverse cylinder 201. At the same time, the control assembly 50 controls the rotary cylinder 202 in the receiving and positioning assembly 20 to rotate. The positioning block 203 is driven to rotate 90° by the rotary cylinder 202. The receiving hole 2031 of the positioning block 203 in the receiving and positioning assembly 20 rotates from the horizontal direction to the vertical direction, and the screw inside also rotates to the vertical assembly direction.

[0065] Next, the control component 50 controls the gripping claw 4011 of the gripping and tightening component 40 to grip the screw in the receiving hole 2031 of the positioning block 203 in the receiving and positioning component 20 below the initial position. Then, the control component 50 controls the combined displacement slide 30 to start, driving the gripping and tightening component 40 to move to the screw-in position of the product and controls the gripping claw 4011 of the tightening component to put the screw into the screw-in hole of the product. At the same time, after the gripping claw 4011 removes the screw from the receiving hole 2031, the control component 50 controls the rotary cylinder 202 in the receiving and positioning component 20 to rotate. The positioning block 203 in the receiving and positioning component 20 is driven by the rotary cylinder 202, and the receiving hole 2031 of the positioning block 203 in the receiving and positioning component 20 returns to the horizontal direction.

[0066] Next, the control component 50 controls the vibrating discharge component 10 and the receiving and positioning component 20 to repeat the above operation. At the same time, the control component 50 controls the lifting cylinder 402 to start. The lifting cylinder 402 drives the tightener 403 to descend and pass through the through hole 4013 in the gripping and tightening component 40 to tighten the screw in the hole to the specified depth.

[0067] Next, the control component 50 controls the output end of the lifting cylinder 402 to reset and simultaneously controls the combined displacement slide 30 to start, driving the gripping and tightening component 40 to move to the initial position. After that, the control component 50 controls the gripping claw 4011 of the gripping and tightening component 40 to grip the screw in the receiving hole 2031 and then move it to another screw-in position of the product according to the parameters.

[0068] Next, the control component 50 controls the combined displacement slide 30 and the gripping and tightening component 40 to repeat the above actions until a product is assembled.

[0069] Finally, the control component 50 controls the positioning seat 601 in the transverse slide 60 to move from the position to be assembled to the initial position. The worker takes away the assembled product and puts in the next product to be assembled, and so on.

[0070] The above description is merely a preferred embodiment of one or more embodiments of this specification and is not intended to limit the scope of one or more embodiments of this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of one or more embodiments of this specification.

Claims

1. A screw automatic assembly device characterized by, include: Vibrating discharge assembly, including discharge port; The material receiving and positioning assembly includes a transverse cylinder, a rotary cylinder, and a positioning block. The positioning block has a material receiving hole on its outer periphery and is connected to the output ends of both the transverse cylinder and the rotary cylinder. A combined displacement slide is mounted above the material receiving and positioning assembly; and The gripping and tightening assembly is connected to the slide of the combined displacement slide, and the initial position of the gripping and tightening assembly is set above the initial position of the positioning block in the receiving and positioning assembly. When the vibrating discharge assembly is in the start-up state, the receiving hole of the positioning block in the receiving and positioning assembly is driven by the transverse cylinder to contact the discharge port of the vibrating discharge assembly. When the vibrating discharge assembly is in the off state, the positioning block in the receiving and positioning assembly is driven back to its initial position by the transverse cylinder and rotated 90° by the rotary cylinder.

2. The automatic screw assembly apparatus of claim 1, wherein: The receiving and positioning assembly is equipped with a positioning sensor inside the receiving hole.

3. The automatic screw assembly apparatus of claim 1, wherein The combined displacement slide includes: support; The first slide is horizontally mounted on top of the support; and The second slide is vertically arranged relative to the first slide, and the second slide is connected to the slide base of the first slide. The slide base of the second slide is connected to the gripping and tightening assembly.

4. The automatic screw assembly apparatus of claim 1, wherein The gripping and tightening assembly includes: A gripper includes a gripper claw, the top of which has a laterally extending connecting plate, one end of which is connected to the slide of the combined displacement slide, and the connecting plate has a through hole; A lifting cylinder is disposed above the gripper and connected to the slide of the combined displacement slide; and A tightening device, the top of which is connected to the output end of the lifting cylinder, wherein at least a portion of the outer circumferential diameter of the tightening device is smaller than the diameter of the through hole in the connecting plate; The center of the gripper, the through hole in the connecting plate, the output end of the lifting cylinder, and the tightener are located on the same vertical line.

5. The automatic screw assembly apparatus of claim 4, wherein: The gripper is an electric gripper, which is connected to a detachable clamping jaw.

6. The automatic screw assembly apparatus of claim 4, wherein: The gripper has a guiding structure; A screwdriver, the top of which is connected to the output end of the lifting cylinder in the gripping and tightening assembly; and A limiting block is provided on the screwdriver, and the outer diameter of the limiting block is larger than the diameter of the through hole in the gripping and tightening assembly.

7. The automatic screw assembly apparatus of claim 1, wherein The automatic screw assembly device also includes a transverse slide, and a positioning seat is provided on the slide block of the transverse slide.

8. The automatic screw assembly apparatus of claim 7, wherein: The transverse slide is equipped with a limit sensor.

9. The automatic screw assembly apparatus of claim 8, wherein: The automatic screw assembly device also includes a control component, which is electrically connected to the vibration discharge component, the receiving and positioning component, the combined displacement slide, the gripping and tightening component, the transverse slide and the limit sensor.

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