PCB positioning mechanism
Through the two-way limiting mechanism and the rolling mechanism combined with sensor detection, the multi-directional precise positioning of the PCB board is achieved, solving the problem of inaccurate positioning in the existing technology, improving production efficiency and protecting the integrity of the PCB board.
Patent Information
- Application Number
- CN202422189924.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The existing PCB board positioning method is prone to position deviation during the jaw clamping process, resulting in inaccurate positioning and affecting production efficiency and product quality.
The two-way limiting mechanism and the rolling mechanism are adopted, combined with sensor detection, to achieve multi-directional precise positioning of the PCB board.
It improves the positioning accuracy during the loading process of PCB board, reduces friction and damage risks, and improves production efficiency and equipment flexibility.
Smart Images
Figure CN223073433U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of automation technology, and in particular to a PCB board positioning mechanism. Background Art
[0002] With the continuous development of electronic products, as the core component of electronic devices, the production process requirements of PCB (Printed Circuit Board) are also constantly improving. In the manufacturing and assembly process of PCB boards, the transportation and precise positioning of the boards are one of the important links to ensure production efficiency and product quality. With the progress of automation technology, traditional manual operations have gradually been replaced by automated equipment, and the manufacturing and assembly process of PCB boards has gradually moved towards automated operations.
[0003] The existing PCB board loading method usually sets a loading track on the production line. When the PCB board reaches the designated position, it is detected by a sensor set on the track, and the clamping jaw is controlled to clamp the PCB board. In the existing positioning method, the position of the PCB board is usually located by relying on the edge of the track or a simple limiting device, and then the PCB board is picked up from the track by the clamping jaw and transferred to other workstations.
[0004] There are certain deficiencies in the precise positioning of the existing positioning method for PCB boards. Especially during the clamping process of the clamping jaw, the PCB board is prone to position deviation due to inaccurate positioning, resulting in inaccurate clamping or even damage to the PCB board. In addition, the existing limiting devices usually can only limit one side of the board or roughly position through a simple structure, and it is difficult to ensure the accurate positioning of the PCB board in multiple directions. This deficiency not only affects production efficiency but also may lead to product quality problems. Therefore, how to improve the positioning accuracy during the clamping of the clamping jaw in the PCB board loading process has become a technical problem to be solved in the present application. Utility Model Content
[0005] In order to improve the positioning accuracy during the clamping of the clamping jaw in the PCB board loading process, the present application provides a PCB board positioning mechanism. The present application provides the following technical solutions:
[0006] A PCB board positioning mechanism includes a loading track for placing the PCB board and a sensor provided on the loading track. The width of the PCB board is smaller than the width of the loading track; a first limiting mechanism, a second limiting mechanism, and a pushing mechanism are further provided on the loading track. The sensor is provided between the first limiting mechanism and the second limiting mechanism. Both the first limiting mechanism and the second limiting mechanism can move in the vertical direction. The connection direction of the first limiting mechanism and the second limiting mechanism is the same as the running direction of the PCB board. The pushing mechanism is located on one side of the running direction of the PCB board and is arranged in parallel with the sensor.
[0007] In a specific feasible implementation scheme, the first limiting mechanism includes a first limiting plate, a first slide cylinder and a second slide cylinder; the second slide cylinder is horizontally arranged and arranged on the feeding track, the first slide cylinder is vertically arranged, the first slide cylinder is arranged on the slide of the second slide cylinder, and the first limiting plate is arranged on the slide of the first slide cylinder.
[0008] In a specific feasible implementation manner, the second limiting mechanism includes a second limiting plate, a third slide cylinder and a fourth slide cylinder; the fourth slide cylinder is horizontally arranged and arranged on the feeding track, the third slide cylinder is vertically arranged, the third slide cylinder is arranged on the slide of the fourth slide cylinder, and the second limiting plate is arranged on the slide of the third slide cylinder.
[0009] In a specific feasible implementation scheme, the ejection mechanism includes an ejection cylinder and a push block, and the ejection cylinder and the push block are both arranged on the feeding track on one side of the sensor, the push block is connected to the piston rod of the ejection cylinder, and the connecting direction of the push block and the ejection cylinder is perpendicular to the running direction of the PCB board.
[0010] In a specific possible implementation scheme, a groove is provided on the feeding track at one side of the sensor, and the push block is slidably disposed in the groove.
[0011] In a specific implementation manner, the top ends of the first limiting mechanism and the second limiting mechanism are both provided with limiting blocks for limiting the PCB board, and the width of the limiting blocks is smaller than the width of the PCB board.
[0012] In a specific possible implementation scheme, there are two limit blocks, and a clearance groove for the clamping claw to pass through is opened between the two limit blocks.
[0013] In a specific implementation manner, the sensor is a photoelectric sensor, a capacitive proximity sensor or a laser sensor.
[0014] In summary, the beneficial effects of this application include at least:
[0015] 1) Through the two-way limiting of the first limiting mechanism and the second limiting mechanism, combined with the pushing action of the ejection mechanism, the utility model can achieve accurate positioning of the PCB board in multiple directions. Compared with the existing technology that can only roughly position or only limit one side, this design greatly improves the positioning accuracy of the PCB board during the loading process, thereby ensuring that the clamp can accurately clamp the PCB board and improve production efficiency.
[0016] 2) The first limiting mechanism and the second limiting mechanism adopt a block-shaped limiting structure instead of a large-area plate-shaped clamping method. This design greatly reduces the contact area with the surface of the PCB board, thereby reducing the friction force and the risk of damage to the surface of the PCB board. Especially for thinner or more fragile PCB boards, this structure can provide a more uniform force distribution and effectively prevent the PCB board from warping or deforming during the clamping process.
[0017] 3) The ejection mechanism of the present utility model is arranged in the groove of the loading track, which not only ensures that the movement path of the push block is accurate and controlled, but also makes the structure of the entire mechanism more compact, saving equipment space. In addition, the design of the sliding table cylinder enables the position of the limiting plate to be flexibly adjusted according to actual needs, facilitating the debugging and maintenance of the equipment, and further improving the flexibility and reliability of the production process.
[0018] The sensor is used to detect the position of the PCB board, and the first and second limiting mechanisms accurately clamp both sides of the PCB board. The ejection mechanism can accurately push the PCB board to the edge of the track to align it with the track, completing precise positioning in multiple directions. Compared with the existing limiting devices, it can ensure the accurate positioning of the PCB board in multiple directions and improve the positioning accuracy during the clamping of the gripper in the PCB board loading process.
[0019] The above description is only an overview of the technical solution of this application. In order to understand the technical means of this application more clearly and implement it according to the content of the specification, the following provides a detailed description with reference to the preferred embodiments of this application and the accompanying drawings. Description of the Drawings
[0020] Figure 1 is the overall structural schematic diagram of the PCB board positioning mechanism in this embodiment.
[0021] Figure 2 is Figure 1 the enlarged view of part A in
[0022] Figure 3 is the structural schematic diagram of the PCB board positioning mechanism in this embodiment.
[0023] Reference numerals: 1, loading track; 11, groove; 2, PCB board; 3, ejection mechanism; 31, ejection cylinder; 32, push block; 4, first limiting mechanism; 41, first limiting plate; 42, first sliding table cylinder; 43, second sliding table cylinder; 5, second limiting mechanism; 51, second limiting plate; 52, third sliding table cylinder; 53, fourth sliding table cylinder; 6, sensor; 7, first limiting block; 8, second limiting block; 9, relief groove. Detailed Embodiment
[0024] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.
[0025] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe in detail the specific implementation manners of the present application in conjunction with the accompanying drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. Additionally, it should be noted that for the convenience of description, only the parts related to the present application rather than all the structures are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.
[0026] The terms "including" and "having" in this application and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.
[0027] Referring to "embodiments" herein means that the specific features, structures, or characteristics described in conjunction with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0028] An embodiment of the present application discloses a PCB board positioning mechanism.
[0029] Referring to Figure 1 , the PCB board positioning mechanism includes a loading track 1 for placing the PCB board. Combining Figure 2 and Figure 3 , wherein the width of the PCB board 2 is less than the width of the loading track 1. The loading track 1 is provided with a sensor 6, a first limiting mechanism 4, a second limiting mechanism 5, and a pushing mechanism 3. The sensor 6 is located between the first limiting mechanism 4 and the second limiting mechanism 5. The connection direction of the first limiting mechanism 4 and the second limiting mechanism 5 is the same as the moving direction of the PCB board 2. The pushing mechanism 3 is arranged in parallel with the sensor 6.
[0030] Referring to Figure 2 and Figure 3, the first limiting mechanism 4 includes a first limiting plate 41, a first slide cylinder 42 and a second slide cylinder 43. The second slide cylinder 43 is horizontally arranged and installed on the loading track 1. The first slide cylinder 42 is vertically arranged and installed on the slide of the second slide cylinder 43. The first limiting plate 41 is horizontally arranged and installed on the slide of the first slide cylinder 42. The second limiting mechanism 5 includes a second limiting plate 51, a third slide cylinder 52 and a fourth slide cylinder 53. The fourth slide cylinder 53 is horizontally arranged and installed on the loading track 1. The third slide cylinder 52 is vertically arranged and installed on the slide of the fourth slide cylinder 53. The second limiting plate 51 is horizontally arranged and installed on the slide of the third slide cylinder 52.
[0031] Optionally, the slide cylinder is only a specific type of driving mechanism applied in the embodiments of the present application. Other types of driving mechanisms can also be used. The present application does not limit the driving mechanisms of the first limiting plate 41 and the second limiting plate 51.
[0032] Referring to Figure 2 and Figure 3 , a groove 11 is formed on one side of the sensor 6 on the loading track 1. The pushing mechanism 3 includes a pushing cylinder 31 and a pushing block 32. Both the pushing cylinder 31 and the pushing block 32 are installed on one side of the sensor 6 on the loading track 1. The pushing block 32 is slidably arranged in the groove 11. The pushing block 32 is connected to the piston rod of the pushing cylinder 31. The connecting direction of the pushing block 32 and the pushing cylinder 31 is perpendicular to the running direction of the PCB board 2. The groove 11 provides a defined movement path for the pushing block 32 to ensure that the pushing block 32 moves precisely along a direction perpendicular to the running direction of the PCB board 2 when pushing the PCB board 2. This can ensure that the pushing block 32 does not deviate from the track during the pushing process, thereby avoiding unnecessary friction or damage to the PCB board 2.
[0033] Referring to Figure 2 and Figure 3Based on the above hardware settings, it is convenient to assist in realizing that when the PCB board 2 is transmitted on the feeding track 1, when the PCB board 2 passes above the sensor 6, the first slide cylinder 42 drives the first limit plate 41 to rise and intercept the PCB board 2, and at the same time, the third slide cylinder 52 also drives the second limit plate 51 to rise, and the fourth slide cylinder 53 drives the second limit plate 51 and the third slide cylinder 52 to move in the direction close to the PCB board 2 until the second limit plate 51 and the PCB board 2 are against each other, thereby completing the limit on both sides of the moving direction of the PCB board 2. In implementation, the first slide cylinder 42 and the third slide cylinder 52 are used to respectively realize the operation of moving the first limit plate 41 and the second limit plate 51 in the vertical direction, and the second slide cylinder 43 and the fourth slide cylinder 53 are used to respectively realize the movement of the first limit plate 41 and the second limit plate 51 in the moving direction of the PCB board 2, and at the same time, the positions of the first limit plate 41 and the second limit plate 51 can also be fine-tuned. After limiting the two sides of the PCB board 2, the piston rod of the push cylinder 31 drives the push block 32 to be pushed out from the third side of the PCB board 2 until the PCB board 2 abuts against the edge of the feeding track 1, thereby completing the positioning of the PCB board 2, and finally controlling the clamping claws to clamp the PCB board 2.
[0034] Optionally, the sensor in the present application is a photoelectric sensor, a capacitive proximity sensor or a laser sensor. Other types of sensors may also be selected. The present application does not limit the type of sensor.
[0035] Reference Figure 2 and Figure 3 The top surfaces of the first limiting plate 41 and the second limiting plate 51 are both fixedly mounted with a first limiting block 7 and a second limiting block 8 for limiting the PCB board 2, and the widths of the first limiting block 7 and the second limiting block 8 are both smaller than the width of the PCB board 2. A clearance groove 9 for the clamping claw to pass through is provided between the first limiting block 7 and the second limiting block 8. The use of a block structure for clamping can reduce the contact area with the surface of the PCB board, thereby reducing the friction and the need for clamping force. This not only helps to reduce potential damage to the surface of the PCB board, but also improves the flexibility and accuracy of positioning. In addition, the use of a block structure to clamp both sides can effectively avoid the problem of warping or deformation of the PCB board caused by uneven force over a large area. Especially when the PCB board is thin or fragile, the block limit can provide a more uniform force distribution and protect the flatness of the PCB board.
[0036] In summary, the sensor 6 is used to detect the position of the PCB board 2. The first and second limiting mechanisms 5 drive the limiting plate to move along the vertical direction and the advancing direction of the PCB board 2 through the sliding table cylinder, so as to accurately clamp both sides of the PCB board 2. The pushing mechanism 3 includes a pushing block 32 and a pushing cylinder 31. The movement path of the pushing block 32 is defined by the groove 11, ensuring that the pushing block 32 can accurately push the PCB board 2 to the edge of the track and align it with the track, completing the precise positioning in multiple directions. Compared with the existing limiting devices, it can ensure the accurate positioning of the PCB board 2 in multiple directions and improve the positioning accuracy during the clamping of the gripper in the feeding process of the PCB board 2.
[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A PCB board positioning mechanism, comprising a loading track for placing the PCB board and a sensor provided on the loading track, wherein the width of the PCB board is smaller than the width of the loading track; characterized in that, The feeding track is also provided with a first limiting mechanism, a second limiting mechanism and an ejection mechanism, the sensor is arranged between the first limiting mechanism and the second limiting mechanism, the first limiting mechanism and the second limiting mechanism can both move in a vertical direction, the connection direction of the first limiting mechanism and the second limiting mechanism is the same as the running direction of the PCB board, and the ejection mechanism is located on one side of the running direction of the PCB board and is arranged in parallel with the sensor.
2. The PCB board positioning mechanism according to claim 1, wherein, The first limiting mechanism includes a first limiting plate, a first slide cylinder and a second slide cylinder; the second slide cylinder is horizontally arranged and arranged on the feeding track, the first slide cylinder is vertically arranged, the first slide cylinder is arranged on the slide of the second slide cylinder, and the first limiting plate is arranged on the slide of the first slide cylinder.
3. The PCB board positioning mechanism according to claim 1, characterized in that, The second limiting mechanism includes a second limiting plate, a third slide cylinder and a fourth slide cylinder; the fourth slide cylinder is horizontally arranged and arranged on the feeding track, the third slide cylinder is vertically arranged, the third slide cylinder is arranged on the slide of the fourth slide cylinder, and the second limiting plate is arranged on the slide of the third slide cylinder.
4. The PCB board positioning mechanism according to claim 1, characterized in that, The ejection mechanism includes an ejection cylinder and a push block, both of which are arranged on the feeding track on one side of the sensor, the push block is connected to the piston rod of the ejection cylinder, and the connection direction of the push block and the ejection cylinder is perpendicular to the running direction of the PCB board.
5. The PCB board positioning mechanism according to claim 4, wherein, A groove is provided on the feeding track at one side of the sensor, and the push block is slidably arranged in the groove.
6. The PCB board positioning mechanism according to claim 1, wherein, The top ends of the first limiting mechanism and the second limiting mechanism are both provided with limiting blocks for limiting the PCB board, and the width of the limiting blocks is smaller than the width of the PCB board.
7. The PCB board positioning mechanism according to claim 6, characterized in that, There are two limit blocks, and a clearance groove for the clamping claw to pass through is opened between the two limit blocks.
8. The PCB board positioning mechanism according to claim 1, characterized in that, The sensor is a photoelectric sensor, a capacitive proximity sensor or a laser sensor.