Equipment for automatically plugging lead of junction box

Abstract

The utility model discloses a device for automatically plugging a lead of a junction box, which comprises a conveying line used for conveying a photovoltaic module; the pressing mechanism is used for pressing and attaching the plug wire harness of the junction box on the photovoltaic module to the photovoltaic module; the junction box plug grabbing mechanism is used for grabbing a positive pole plug and a negative pole plug of a junction box on the photovoltaic module to a plugging position; and the test tool plugging mechanism is used for plugging the positive electrode plug of the test tool with the positive electrode plug of the junction box and plugging the negative electrode plug of the test tool with the negative electrode plug of the junction box. The utility model provides a device for automatically plugging a lead of a junction box, which can automatically plug the lead of the junction box of a photovoltaic assembly to a test tool, realizes automatic wire plugging, can greatly improve efficiency, simultaneously reduces use sites, and is lower in cost and simple to maintain.

Description

Technical Field

[0001] This utility model relates to a device for automatically connecting junction box leads, belonging to the field of photovoltaic module power testing technology. Background Technology

[0002] Currently, in the power testing stage of photovoltaic modules, after the photovoltaic module encapsulation is welded and potted in the junction box, the positive and negative busbars of the photovoltaic module are connected by welding through the junction box and led out through the positive and negative leads of the junction box body. The metal conductors of the positive and negative leads of the junction box are wrapped in the outer plastic shell, which is called the positive and negative quick-connect lead plug of the junction box. The positive and negative terminals of the photovoltaic module are wrapped in the lead plastic plug of the junction box.

[0003] Photovoltaic module power testing requires connecting wires. Therefore, currently, power testing in production involves manual insertion and removal of the module junction box leads to complete the module power tester's work. With the development of testing technology, methods have emerged that add testing fixtures, pressing the positive and negative probes of the power tester onto the exposed copper electrodes of the fixture. To achieve unmanned operation, existing technologies utilize automated processes involving robotic arms operating on and off the fixtures.

[0004] However, the exposed copper blocks in the robotic arm testing fixture are prone to oxidation, and fixture repair increases equipment maintenance costs. Oxidation of the copper blocks at both the positive and negative electrodes increases resistance, leading to reduced power output during component power testing and indirectly increasing process losses. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an automatic connector for the junction box leads. This device can automatically connect the junction box leads of photovoltaic modules to the test fixture, thereby achieving automatic connection. This can greatly improve efficiency, reduce the space required, lower the cost, and simplify maintenance.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] An automatic junction box lead-connecting device, comprising:

[0008] Conveyor lines are used to transport photovoltaic modules;

[0009] The pressing mechanism is used to press the plug harness of the junction box on the photovoltaic module firmly and attach it to the photovoltaic module;

[0010] The junction box plug gripping mechanism is used to grip the positive and negative plugs of the junction box on the photovoltaic module and place them in the insertion position;

[0011] The test fixture insertion mechanism is used to connect the positive plug of the test fixture to the positive plug of the junction box, and to connect the negative plug of the test fixture to the negative plug of the junction box.

[0012] Furthermore, the pressing mechanism includes a pressing cylinder, a pressing top block, a pressing cylinder mounting plate, a pressing slider, and a pressing slide rail. The pressing top block is fixed on the piston rod of the pressing cylinder, the pressing cylinder is fixed on the pressing slider through the pressing cylinder mounting plate, and the pressing slider slides on the pressing slide rail.

[0013] Furthermore, the junction box plug gripping mechanism includes:

[0014] The junction box positive plug gripping mechanism is used to grip the positive plug of the junction box on the photovoltaic module and place it in the insertion position;

[0015] The junction box negative plug gripping mechanism is used to grip the negative plug of the junction box on the photovoltaic module and place it in the plugging position.

[0016] Furthermore, the junction box positive plug gripping mechanism and the junction box negative plug gripping mechanism have the same structure.

[0017] Furthermore, the junction box positive plug gripping mechanism includes an X-axis moving component, a Z-axis moving component, a rotation adjustment component, a Y-axis moving component, a junction box gripper assembly, and a coaxial vision inspection device. The X-axis moving component drives the Z-axis moving component to move in the X-axis direction. The Z-axis moving component drives the rotation adjustment component, the Y-axis moving component, and the coaxial vision inspection device to move in the Z-axis direction. The Y-axis moving component is connected to the rotation adjustment component and drives the Y-axis moving component to rotate. The junction box gripper assembly is connected to the Y-axis moving component and drives the junction box gripper assembly to move in the Y-axis direction.

[0018] Furthermore, the junction box gripper assembly includes a double-headed cylinder and grippers. The double-headed cylinder is connected to the Y-axis moving assembly, and the two grippers are respectively fixed on the two piston rods of the double-headed cylinder.

[0019] Furthermore, the test fixture insertion mechanism includes:

[0020] The positive terminal connector assembly for the test fixture is used to connect the positive terminal plug of the test fixture to the positive terminal plug of the junction box.

[0021] The negative terminal connector assembly for the test fixture is used to connect the negative terminal plug of the test fixture to the negative terminal plug of the junction box.

[0022] Furthermore, the positive electrode connection assembly and the negative electrode connection assembly of the test fixture have the same structure.

[0023] Furthermore, the positive terminal plug assembly of the test fixture includes a test fixture moving module, a clamp, and a clamp mounting plate. The clamp is fixed on the clamp mounting plate, and the clamp mounting plate is connected to the test fixture moving module. The clamp is used to hold the positive terminal plug of the test fixture.

[0024] By adopting the above technical solution, this utility model uses a junction box positive plug gripping mechanism to grip the positive plug of the junction box on the photovoltaic module to the insertion position, and a junction box negative plug gripping mechanism to grip the negative plug of the junction box on the photovoltaic module to the insertion position. Finally, a test fixture insertion mechanism inserts the positive plug of the test fixture into the positive plug of the junction box and the negative plug of the test fixture into the negative plug of the junction box, thereby realizing the automatic insertion of the junction box leads of the photovoltaic module into the test fixture. This utility model reduces costs, occupies little space, and is relatively simple to maintain in the later stage, requiring little difficulty. It is easy for users to learn and can significantly improve testing efficiency. Attached Figure Description

[0025] Figure 1 This is a diagram illustrating the working state of the device for automatically connecting the junction box leads according to this utility model.

[0026] Figure 2 This is a front view of the device for automatically connecting the junction box leads according to this utility model.

[0027] Figure 3 This is a schematic diagram of the conveyor line of this utility model;

[0028] Figure 4 This is a schematic diagram of the pressing mechanism of this utility model;

[0029] Figure 5 This is a schematic diagram of the junction box plug gripping mechanism of this utility model.

[0030] Figure 6 for Figure 5 Rear view;

[0031] Figure 7 This is a schematic diagram of the test fixture insertion mechanism of this utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the photovoltaic module of this utility model. Detailed Implementation

[0033] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0034] like Figures 1-8 As shown, this embodiment provides a device for automatically connecting junction box leads, which includes:

[0035] Conveyor line 1 is used to transport photovoltaic modules 2;

[0036] The pressing mechanism 9 is used to press and attach the plug harness 33 of the junction box 3 on the photovoltaic module 2 to the photovoltaic module 2.

[0037] The junction box plug gripping mechanism is used to grip the positive plug 31 and negative plug 32 of the junction box 3 on the photovoltaic module 2 and place them into the plugging position;

[0038] The test fixture insertion mechanism is used to connect the positive plug 71 of the test fixture to the positive plug 31 of the junction box 3, and to connect the negative plug 72 of the test fixture to the negative plug 32 of the junction box 3.

[0039] The frame 8 is used to mount the conveyor line 1, the junction box plug gripping mechanism, and the test fixture insertion mechanism 6. Specifically, the conveyor line 1 is mounted at the top of the frame 8, and the junction box plug gripping mechanism and the test fixture insertion mechanism 6 are both mounted below the conveyor line 1.

[0040] like Figure 3 As shown, the conveyor line 1 in this embodiment includes a conveyor motor 11, a drive shaft 12, and two sets of belt conveyor assemblies 13. The two sets of belt conveyor assemblies 13 are respectively fixed on the top of the frame 8. The conveyor motor 11 is fixed on the side wall of one of the belt conveyor assemblies 13. The drive shaft 12 is connected to the conveyor motor 11. The conveyor motor 11 drives the drive shaft 12 to rotate, and the drive shaft 12 provides power to the two sets of belt conveyor assemblies 13.

[0041] like Figure 4 As shown, the pressing mechanism 9 in this embodiment includes a pressing cylinder 91, a pressing top block 92, a pressing cylinder mounting plate 93, a pressing slider 94, and a pressing slide rail 95. The pressing top block 92 is fixed on the piston rod of the pressing cylinder 91, and the pressing cylinder 91 is fixed on the pressing slider 94 via the pressing cylinder mounting plate 93. The pressing slider 94 slides on the pressing slide rail 95. Before insertion, the position of the pressing cylinder 91 is adjusted by moving the slider 94. Then, the pressing cylinder 91 extends, pushing the pressing top block 92 upward until the plug harness 33 of the junction box 3 is pressed tightly against the photovoltaic module 2.

[0042] like Figure 2 , 8 As shown, the junction box plug gripping mechanism in this embodiment includes:

[0043] The junction box positive plug gripping mechanism 4 is used to grip the positive plug 31 of the junction box 3 on the photovoltaic module 2 and place it into the insertion position;

[0044] The junction box negative plug gripping mechanism 5 is used to grip the negative plug 32 of the junction box 3 on the photovoltaic module 2 and place it into the plugging position.

[0045] The junction box positive plug gripping mechanism 4 and the junction box negative plug gripping mechanism 5 have the same structure. The following description uses the junction box positive plug gripping mechanism 4 as an example:

[0046] like Figure 5 , 6 As shown in Figure 8, the junction box positive plug gripping mechanism 4 includes an X-axis moving component, a Z-axis moving component, a rotation adjustment component, a Y-axis moving component, a junction box gripper assembly, and a coaxial vision inspection device. The X-axis moving component drives the Z-axis moving component to move in the X-axis direction. The Z-axis moving component drives the rotation adjustment component, the Y-axis moving component, and the coaxial vision inspection device to move in the Z-axis direction. The Y-axis moving component is connected to the rotation adjustment component, which drives the Y-axis moving component to rotate. The junction box gripper assembly is connected to the Y-axis moving component, which drives the junction box gripper assembly to move in the Y-axis direction.

[0047] During operation, after the photovoltaic module 2 is conveyed to the wiring station on the conveyor line 1, the coaxial vision positioning device takes a picture of the junction box 3 on the photovoltaic module 2 to determine the position coordinates and angle deviation values ​​of the positive plug 31 and the negative plug 32 of the junction box 3.

[0048] Next, the X-axis and Z-axis moving components of the junction box positive plug gripping mechanism 4 move the junction box gripper assembly to directly below the positive plug 31 of the junction box 3. Then, based on the placement deviation angle of the positive plug 31 of the junction box 3, the rotation adjustment component rotates the junction box gripper assembly so that the gripper 452 of the junction box gripper assembly is directly opposite the positive plug of the junction box 3. Finally, the Y-axis moving component drives the junction box gripper assembly to grip the plug of the junction box 3 upwards.

[0049] After the positive plug 31 of the junction box 3 is successfully picked up, the positive plug of the junction box 3 is moved to the insertion position through the cooperation of the above-mentioned moving components and rotating adjustment components, waiting for the positive plugging component 61 of the test fixture to be inserted.

[0050] After the positive plug 31 of junction box 3 and the positive plug 71 of the test fixture are connected, the negative plug 32 of junction box 3 and the negative plug 72 of the test fixture can be connected in the same way as described above.

[0051] Among them, such as Figure 5 , 6As shown, the X-axis moving assembly includes an X-axis motor 411, an X-axis motor mounting plate 412, a gear 413, and a rack 414. The X-axis motor mounting plate 412 is slidably connected to the frame 8 via a slider and a slide rail. The X-axis motor 411 is mounted on the top surface of the X-axis motor mounting plate 412. The gear 413 is mounted on the motor shaft of the X-axis motor 411, and the rack 414 is mounted on the frame 8. The gear 413 meshes with the rack 414. The Z-axis moving assembly is mounted on the top surface of the X-axis motor mounting plate 412. After the X-axis motor 411 is started, the engagement of the gear 413 and the rack 414 drives the X-axis motor mounting plate 412 to slide along the frame 8 in the X-axis direction. Then, the X-axis motor mounting plate 412 drives the Z-axis moving assembly to move along the X-axis direction.

[0052] like Figure 5 , 6 As shown, the Z-axis movement assembly includes a linear module 422 and a rotary motor mounting plate 421. The linear module 422 is a semi-enclosed precision screw series linear module of model TPA-HNR-120E. The linear module 422 is fixed to the top surface of the X-axis motor mounting plate 412. The rotary motor mounting plate 421 is connected to the linear module 422, and the linear module 422 drives the rotary motor mounting plate 421 to move in the Z-axis direction.

[0053] like Figure 5 , 6 As shown, the rotary adjustment assembly includes a rotary motor 431 and a cylinder connecting plate 432. The rotary motor 431 is mounted on the top surface of the rotary motor mounting plate 421, and the cylinder connecting plate 432 is connected to the rotary motor 431. The Y-axis moving assembly is connected to the cylinder connecting plate 432, and the rotary motor 431 drives the Y-axis moving assembly to rotate.

[0054] like Figure 5 , 6 As shown, the Y-axis moving assembly includes a Y-axis cylinder 441, which is connected to the cylinder connecting plate 432 of the rotation adjustment assembly. The extension and retraction of the Y-axis cylinder 441 drives the junction box gripper assembly to move up and down in the Y-axis direction.

[0055] like Figure 5 , 6 As shown, the junction box gripper assembly includes a double-headed cylinder 451 and grippers 452. The double-headed cylinder 451 is connected to the piston rod of the Y-axis cylinder 441, and the two grippers 452 are respectively fixed on the two piston rods of the double-headed cylinder 451. The extension and retraction of the double-headed cylinder 451 drives the grippers 452 to perform gripping and releasing actions, gripping and releasing the positive plug 31 and the negative plug 32 of the junction box 3.

[0056] like Figure 5 , 6As shown, the coaxial vision inspection device includes a bracket 461, an industrial camera 462, and a light source 463. The bracket 461 is mounted on a rotary motor mounting plate 421. The industrial camera 462 and the light source 463 are respectively mounted on the bracket 461, with the industrial camera 462 located directly above the through-hole of the light source 463. After the light source 463 is lit, the industrial camera 462 takes a picture of the junction box 3 on the photovoltaic module 2 through the through-hole of the light source 463.

[0057] like Figure 2 As shown, the test fixture insertion mechanism in this embodiment includes:

[0058] The positive terminal plug assembly 61 of the test fixture is used to connect the positive terminal plug 71 of the test fixture to the positive terminal plug 31 of the junction box 3.

[0059] The negative terminal connector 62 of the test fixture is used to connect the negative terminal plug 72 of the test fixture to the negative terminal plug 32 of the junction box 3.

[0060] The positive terminal plug-in assembly 61 and the negative terminal plug-in assembly 62 of the test fixture have the same structure. The following description uses the positive terminal plug-in assembly 61 as an example:

[0061] like Figure 7 As shown, the positive terminal plug assembly 61 of the test fixture includes a test fixture moving module 611, a clamp 612, and a clamp mounting plate 613. The clamp 612 is fixed on the clamp mounting plate 613, which is connected to the test fixture moving module 611. The clamp 612 is used to hold the positive terminal plug 71 of the test fixture. During plugging, the test fixture moving module 611 drives the clamp 612 to move towards the positive terminal plug 31 of the junction box 3, and then the positive terminal plug 71 of the test fixture on the clamp 612 is plugged into the positive terminal plug 31 of the junction box 3.

[0062] The working principle of this utility model is as follows:

[0063] 1. After the photovoltaic module 2 is conveyed to the insertion station of the equipment on the conveyor line 1, the pressing cylinder 91 is moved to the bottom of the plug harness 33 of the junction box 3. Then the pressing cylinder 91 pushes the pressing block 92 upward until the plug harness 33 of the junction box 3 is pressed tightly against the photovoltaic module 2.

[0064] 2. The positive plug 31 and negative plug 32 of the junction box 3 on the photovoltaic module 2 are photographed by the coaxial vision positioning device to determine the position coordinates and angle deviation values ​​of the positive plug 31 and negative plug 32 of the junction box 3.

[0065] 3. Based on the position coordinates of junction box 3, the junction box positive plug gripping mechanism 4 grips the positive plug 31 of the junction box on photovoltaic module 2 to the insertion position, and the test fixture positive plug insertion component 61 inserts the positive plug 71 of the test fixture into the positive plug 31 of the junction box 3. Then, the junction box negative plug gripping mechanism 5 grips the negative plug 32 of the junction box 3 on photovoltaic module 2 to the insertion position, and the test fixture negative plug insertion component 62 inserts the negative plug 72 of the test fixture into the negative plug 32 of the junction box 3. It should be noted that both the junction box positive plug gripping mechanism 4 and the junction box negative plug gripping mechanism 5 are equipped with coaxial vision inspection devices, which can provide real-time viewing of the gripping process if needed. By setting the gripping position threshold, a highly reliable and accurate gripping effect can be achieved.

[0066] 4. After the connection is completed, you can perform a power-on test.

[0067] 5. After the power-on test is completed, each mechanism returns to its initial position and waits for the next power-on connection.

[0068] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for automatically connecting junction box leads, characterized in that it include: Conveyor line (1) for transporting photovoltaic modules (2); The pressing mechanism (9) is used to press the plug harness (33) of the junction box (3) on the photovoltaic module (2) tightly onto the photovoltaic module (2); The junction box plug gripping mechanism is used to grip the positive plug (31) and negative plug (32) of the junction box (3) on the photovoltaic module (2) to the plugging position; The test fixture plug-in mechanism is used to plug the positive plug (71) of the test fixture into the positive plug (31) of the junction box (3) and to plug the negative plug (72) of the test fixture into the negative plug (32) of the junction box (3). The junction box plug gripping mechanism includes: The junction box positive plug gripping mechanism (4) is used to grip the positive plug (31) of the junction box (3) on the photovoltaic module (2) to the plugging position; The junction box negative plug gripping mechanism (5) is used to grip the negative plug (32) of the junction box (3) on the photovoltaic module (2) to the plugging position; The junction box positive plug gripping mechanism (4) and the junction box negative plug gripping mechanism (5) have the same structure; The junction box positive plug gripping mechanism (4) includes an X-axis moving component, a Z-axis moving component, a rotation adjustment component, a Y-axis moving component, a junction box gripper assembly, and a coaxial vision inspection device. The X-axis moving component is used to drive the Z-axis moving component to move in the X-axis direction. The Z-axis moving component is used to drive the rotation adjustment component, the Y-axis moving component, and the coaxial vision inspection device to move in the Z-axis direction. The Y-axis moving component is connected to the rotation adjustment component and is used to drive the Y-axis moving component to rotate. The junction box gripper assembly is connected to the Y-axis moving component and is used to drive the junction box gripper assembly to move in the Y-axis direction.

2. The device for automatically connecting junction box leads according to claim 1, characterized in that: The pressing mechanism (9) includes a pressing cylinder (91), a pressing top block (92), a pressing cylinder mounting plate (93), a pressing slider (94), and a pressing slide rail (95). The pressing top block (92) is fixed on the piston rod of the pressing cylinder (91). The pressing cylinder (91) is fixed on the pressing slider (94) by the pressing cylinder mounting plate (93). The pressing slider (94) slides on the pressing slide rail (95).

3. The device for automatically connecting junction box leads according to claim 1, characterized in that: The junction box gripper assembly includes a double-headed cylinder (451) and grippers (452). The double-headed cylinder (451) is connected to the Y-axis moving assembly, and the two grippers (452) are respectively fixed on the two piston rods of the double-headed cylinder (451).

4. The device for automatically connecting junction box leads according to claim 1, characterized in that, The test fixture insertion mechanism includes: The positive plug assembly (61) of the test fixture is used to connect the positive plug (71) of the test fixture to the positive plug (31) of the junction box (3); The negative plug assembly (62) of the test fixture is used to connect the negative plug (72) of the test fixture to the negative plug (32) of the junction box (3).

5. The device for automatically connecting junction box leads according to claim 4, characterized in that: The positive terminal plug-in assembly (61) and the negative terminal plug-in assembly (62) of the test fixture have the same structure.

6. The device for automatically connecting junction box leads according to claim 5, characterized in that: The positive terminal plug assembly (61) of the test fixture includes a test fixture moving module (611), a clamp (612) and a clamp mounting plate (613). The clamp (612) is fixed on the clamp mounting plate (613). The clamp mounting plate (613) is connected to the test fixture moving module (611). The clamp (612) is used to clamp the positive terminal plug (71) of the test fixture.

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