assembly table

Abstract

The utility model relates to an assembly workstation, including frame, be equipped with transmission mechanism on the frame, transmission mechanism is driven to have conveyer belt, transmission mechanism includes: motor, install on the frame, as power source, transmission roll, conveyer belt is taut on transmission roll, tension roll, conveyer belt passes through tension roll, tension roll can slip setting in the movement direction of conveyer belt, the tension degree of conveyer belt is by the displacement of at least one tension roll realizes tightness degree adjustment. The utility model adopts conveyer belt auxiliary transmission direction to take semi -finished product, reduces the labor intensity of staff frequent long -distance to fetch work piece. Compared with conventional belt structure, a group of three transmission rolls, a group of two tension rolls that can be adjusted at any time are used in the application, and the tightness of the conveyer belt can be adjusted in real time.

Description

Technical Field

[0001] This utility model relates to the field of workpiece assembly equipment technology, and in particular to an assembly workbench. Background Technology

[0002] In the production of two-wheeled electric vehicles, the assembly of the handlebars is completed by multiple employees working together. Due to the distance between the workstations, after completing the assembly at their workstation, each employee needs to place the assembled handlebar at the next workstation before retrieving it from the next workstation for the next step.

[0003] During this process, employees frequently have to reach for the steering wheel from a distance, resulting in wasted space and low operational efficiency. Utility Model Content

[0004] This application addresses the shortcomings of existing production technologies by providing a reasonably structured assembly workbench that shortens the distance between semi-finished products and employees during the assembly process and reduces the labor intensity for employees handling semi-finished products.

[0005] The technical solution adopted in this utility model is as follows:

[0006] An assembly workbench includes a frame, on which a transmission mechanism is mounted, and the transmission mechanism drives a conveyor belt.

[0007] The transmission mechanism includes:

[0008] The motor, mounted on the frame, serves as the power source.

[0009] Drive rollers, the conveyor belt is tensioned on the drive rollers.

[0010] The conveyor belt passes over the tension roller, which is slidably positioned in the direction of the conveyor belt's movement.

[0011] The tension of the conveyor belt is adjusted by the displacement of at least one tensioning roller.

[0012] As a further improvement to the above technical solution:

[0013] The frame is provided with a roller slide rail along the output direction of the conveyor belt, and the tensioning roller reciprocates along the roller slide rail.

[0014] The tensioning roller has a connecting section coaxially extending from its end, which extends into the roller slide rail and slides along the roller slide rail.

[0015] The frame or roller slide rail is provided with a roller support, and a lead screw is connected between the roller support and the connecting section. The rotation of the lead screw drives the connecting section to slide along the roller slide rail.

[0016] At least one end of the tensioning roller is movably connected to the roller support via a lead screw.

[0017] The y-axis adjustment movements of all tension rollers are adjusted independently of each other.

[0018] All drive rollers are arranged in a coplanar manner.

[0019] The transmission rollers include a first transmission roller, a second transmission roller, and a third transmission roller with a pre-defined height difference in the z-direction between the first and second transmission rollers.

[0020] The relative position of the third drive roller remains constant.

[0021] The third transmission roller is connected to a driven wheel, and the output shaft of the motor is connected to a driving wheel; the driven wheel and the driving wheel are connected by a belt; the third transmission roller is used as a speed reduction roller.

[0022] The beneficial effects of this utility model are as follows:

[0023] This invention uses a conveyor belt to assist in the direction of semi-finished products, reducing the labor intensity of employees frequently having to retrieve workpieces from long distances. Compared to conventional belt structures, this application utilizes a set of three drive rollers and a set of two adjustable tension rollers to allow for real-time adjustment of the conveyor belt tension.

[0024] Currently, factory conveyor belts on the market, especially those requiring manual operation on both sides, transport relatively light products, such as small items like food and soap. However, for products transported by conveyor belts of this size, which are among the heavier items, the belts are more prone to loosening over time. Therefore, this application designs the tension adjustment screw structure as an exposed type, located on the lower frame facing the operator, making it easier to adjust and maintain at any time.

[0025] Furthermore, this application employs two tension rollers, which effectively prevents a single tension roller from deviating from the x-direction during use. If a single tension roller deviates, it will affect the tension of the entire conveyor belt. Two tension rollers can act on a larger force-bearing surface, resulting in greater stability. Adding more tension rollers increases cost and operational complexity; therefore, two adjustable tension rollers are the optimal solution for long conveyor belts carrying heavier products. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this application.

[0027] Figure 2 This is a schematic diagram of the overall structure from another perspective of this application.

[0028] Figure 3 This is a partial view of the lower rack of this application.

[0029] Figure 4 This is a partial view of the lower rack of this application from another perspective.

[0030] Figure 5 This is a schematic diagram of the transmission mechanism of this application.

[0031] Figure 6 for Figure 5 The enlarged view in section A is used to illustrate the installation structure of the lead screw.

[0032] Figure 7 This is a schematic diagram of the roller assembly principle in another embodiment of this application.

[0033] Figure 8 This is a schematic diagram of the roller assembly principle in another embodiment of this application.

[0034] Figure 9 This is a schematic diagram of the roller assembly principle in another embodiment of this application.

[0035] The components include: 1. Upper frame; 2. Lower frame; 3. Conveyor belt; 4. Transmission mechanism; 5. Mounting base; 6. Connecting section.

[0036] 401. Motor; 402. Drive wheel; 403. Driven wheel; 404. Belt; 405. First drive roller; 406. Second drive roller; 407. Third drive roller; 408. First tension roller; 409. Second tension roller; 410. Roller support; 411. Roller slide rail; 412. Lead screw. Detailed Implementation

[0037] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0038] Example 1:

[0039] like Figure 1 As shown, the assembly workbench of this application includes a frame. The frame is divided into an upper frame 1 and a lower frame 2. The upper frame 1 is equipped with lighting and is used as a light fixture. The lower frame 2 is equipped with a conveyor belt 3 on its top and a transmission mechanism 4 is installed on the lower frame 2 to drive the conveyor belt 3 to rotate cyclically and to adjust the tension of the conveyor belt 3.

[0040] like Figure 2 and Figure 3 The diagram shows a transmission structure mounted on the lower frame 2. The transmission structure includes a motor 401 as a power source, mounted on the lower frame 2 near the ground. A drive pulley 402 is mounted on the output shaft of the motor 401. Above the motor 401 is a roller assembly, one roller of which has a driven pulley 403 with a diameter larger than that of the drive pulley 402. A belt 404 is tensioned between the driven pulley 403 and the drive pulley 402.

[0041] In one embodiment of this application, the roller assembly includes at least one drive roller and at least one tension roller. (Referring to the reference...) Figure 5 In this embodiment, the roller group has a total of 5 rollers, three of which are drive rollers and two are tension rollers. A driven wheel 403 is set on one of the drive rollers, which is the power roller that drives the other drive rollers and tension rollers.

[0042] Figure 5 To facilitate reading the diagram, the conveyor belt 3 is shown as a transparent component. Combined with the arrows, the movement direction and principle of the roller group and the conveyor belt 3 can be determined.

[0043] The figure shows a three-dimensional coordinate system, and the conveyor belt 3 moves in a circular motion along the y-axis.

[0044] In one embodiment of this application, the rollers are divided into three groups in the z-axis, each located at a different height. The first drive roller 405 and the second drive roller 406 have the highest z-axis height. The first drive roller 405 and the second drive roller 406 are coplanar. For ease of reading the figure, the y-axis distance between the first drive roller 405 and the second drive roller 406 has been shortened. The actual distance can be referenced. Figure 1 The distance between the first drive roller 405 and the second drive roller 406 is determined according to the operating space required in actual operation.

[0045] Below the first drive roller 405 and the second drive roller 406, at a lower position in the z-direction, a coplanar first tension roller 408 and a second tension roller 409 are provided.

[0046] The third drive roller 407 is located directly below the first tension roller 408 and the second tension roller 409, at a lower position in the z-direction height.

[0047] The position of the third drive roller 407 remains constant and is fixedly connected to the lower frame 2, in accordance with reference. Figure 3 , Figure 4 The third drive roller 407 is fixedly connected to the lower frame 2 via the mounting seat 5 on the lower frame 2. Figure 3 , Figure 4 To facilitate viewing the winding pattern of the conveyor belt 3, one of the rods of the lower frame 2 is hidden, and only the mounting base 5 is shown.

[0048] Back Figure 5 After the position of the roller group is defined, the conveyor belt 3 starts from the first drive roller 405, and according to the position shown in the figure, clockwise around the first drive roller 405, and then pulls horizontally above the second drive roller 406.

[0049] After passing clockwise around the second drive roller 406, it is pulled horizontally above the second tension roller 409.

[0050] After passing counterclockwise around the second tension roller 409, it is pulled down to below the third drive roller 407.

[0051] After passing clockwise around the third drive roller 407, it is pulled upwards above the first tension roller 408.

[0052] After passing counterclockwise around the first tension roller 408, it is pulled horizontally above the first drive roller 405, thus completing the cyclic transmission process.

[0053] The relative positions of the first tension roller 408, the second tension roller 409, and the lower frame 2 are adjustable. The first tension roller 408 and the second tension roller 409 can reciprocate in the y-direction. By utilizing the displacement in the y-direction, the tension of the conveyor belt 3 can be changed, thereby achieving the purpose of adjusting the tension of the conveyor belt 3.

[0054] The first tensioning roller 408, the second tensioning roller 409 and the lower frame 2 have the same cooperation relationship. The second tensioning roller 409 will be used as an example for explanation.

[0055] like Figure 5 and Figure 6 As shown, a roller slide rail 411 is installed on the lower frame 2. The roller slide rail 411 is fastened to one of the rods of the lower frame 2 and lies flat against the rod in the y-direction. Roller supports 410 are fastened or welded to both ends of the roller slide rail 411, or to the lower frame 2 near the ends of the roller slide rail 411. A lead screw 412 is installed on the roller support 410, parallel to the roller slide rail 411, and extending through the connecting section 6 of the roller slide rail 411. The lead screw 412 is threaded to the roller support 410 and rotatably connected to the connecting section 6, which can be achieved using a bearing connection.

[0056] When it is necessary to adjust the tension of the conveyor belt 3, rotate one or two lead screws 412. When the lead screw 412 rotates, a relative displacement in the y direction is generated between the lead screw 412 and the roller support 410, which pushes the tensioning roller connected to the lead screw 412 to move in the y direction, thereby changing the tension of the tensioning roller on the conveyor belt 3.

[0057] At the other end of the tension roller, the same screw 412 structure can be used, or only a slide rail structure can be used. If the same screw 412 structure is used, then when adjusting the y-direction position of the tension roller, both ends of the screw 412 need to be operated simultaneously. If a structure with one end of the screw 412 and the other end sliding is used, then only one end of the screw 412 needs to be adjusted, and the connecting section 6 at the other end of the tension roller can directly fall on the corresponding roller slide rail 411. By using a conventional slide rail structure, the connecting section 6 at the end of the tension roller away from the screw 412 acts as a slider falling in the slide rail, thus achieving a single-end push and the other end driven adjustment method.

[0058] When using the assembly workbench, after completing part of the assembly with the handle on the right, the employee places the semi-finished product on the conveyor belt 3. The semi-finished product is then transported to the next work station via the conveyor belt 3, greatly reducing the distance the employee has to pick up the product.

[0059] Example 2:

[0060] As an alternative implementation, only one tension roller may be provided.

[0061] In this embodiment, the first tension roller 408 can be completely fixed on the lower frame 2, while only the second tension roller 409 is equipped with a lead screw 412 that can adjust the y-direction displacement.

[0062] However, considering the overall size of the equipment, the relatively long x-axis length of the tensioning roller, and its considerable weight, in a single-head driven structure, one end may have moved while the driven end, due to its own weight or friction, has not moved the same y-axis distance, resulting in jamming or the roller deviating from the x-axis. Therefore, the two-tensioning roller structure in Embodiment 1 is preferred.

[0063] Example 3:

[0064] As an alternative implementation, the third drive roller 407 can be omitted.

[0065] The function of the third drive roller 407 is to assist the first tension roller 408 and the second tension roller 409 in tensioning the conveyor belt 3. After removing the third drive roller 407, since the z-direction distance difference between the drive roller and the tension roller has been defined in Embodiment 1, theoretically the tension can also be adjusted by moving the tension roller.

[0066] like Figure 7 As shown, there are two situations in which the tension adjustment function can still be maintained even after the third drive roller 407 is removed:

[0067] Scenario 1: Shorten the length of conveyor belt 3 so that it only wraps around the first drive roller 405, the second drive roller 406, the first tension roller 408, and the second tension roller 409. When wrapping around the first tension roller 408 and the second tension roller 409, it can be done entirely clockwise, or it can be done as follows: Figure 8 The method shown involves wrapping counterclockwise around the second tension roller 409 and clockwise around the first tension roller 408, or using methods such as... Figure 9 The diagram shows the method of winding counterclockwise around the first tension roller 408 and clockwise around the second tension roller 409.

[0068] It should be noted that if a combination of clockwise and counterclockwise rotations is used to wrap around the tension rollers, then the first tension roller 408 and the second tension roller 409 also need to have a height difference in the z-direction.

[0069] Scenario 2: By further increasing the z-axis height difference between the drive roller and the tension roller, the original length of the conveyor belt 3 can be retained and the tensioning function can be achieved even after the third drive roller 407 is removed.

[0070] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. An assembly workbench, characterized in that: The machine includes a frame, on which a transmission mechanism (4) is provided, and the transmission mechanism (4) drives a conveyor belt (3). The transmission mechanism (4) includes: The motor (401) is mounted on the frame and serves as the power source. The drive roller and the conveyor belt (3) are tensioned on the drive roller. The tension roller is around which the conveyor belt (3) passes. The tension roller is slidably disposed in the direction of movement of the conveyor belt (3). The tension of the conveyor belt (3) is adjusted by the displacement of at least one tensioning roller; The frame is provided with a roller slide rail (411) along the output direction of the conveyor belt (3), and the tensioning roller reciprocates along the roller slide rail (411); The tensioning roller has a connecting section (6) coaxially extending out from its end. The connecting section (6) extends into the roller slide rail (411) and slides along the roller slide rail (411). The frame or roller slide rail (411) is provided with a roller support (410), and a lead screw (412) is connected between the roller support (410) and the connecting section (6). The lead screw (412) rotates and drives the connecting section (6) to slide along the roller slide rail (411). The transmission rollers include a first transmission roller (405) and a second transmission roller (406) that are coplanar, and a third transmission roller (407) that has a reserved height difference in the z-direction between itself and the first transmission roller (405) and the second transmission roller (406). The relative position of the third drive roller (407) remains constant; The third transmission roller (407) is connected to a driven wheel (403), and the output shaft of the motor (401) is connected to a driving wheel (402); There is a connection between the driven wheel (403) and the driving wheel (402); The third drive roller (407) is used as a speed reduction roller.

2. The assembly workbench as described in claim 1, characterized in that: At least one end of the tensioning roller is movably connected to the roller support (410) via a lead screw (412).

3. The assembly workbench as described in claim 1, characterized in that: The y-axis adjustment movements of all tension rollers are adjusted independently of each other.

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