Positioning tool for PCBA (printed circuit board assembly)

Abstract

The utility model discloses a positioning tool for a PCBA (printed circuit board assembly) board, which comprises a processing table, a first positioning assembly is arranged at the upper end of the processing table, a second positioning assembly is arranged right above the first positioning assembly, the first positioning assembly comprises a plurality of first motors, and output shafts of the first motors are provided with first threaded rods through couplings; the first threaded rod is connected with an adjusting plate, the second positioning assembly comprises a movable groove, the movable groove is formed in one side of the first limiting plate, a plurality of third motors are arranged on one side of the first limiting plate through a third fixing frame, output shafts of the third motors are connected with a second threaded rod, and a limiting groove is formed in one side of the first limiting plate. Through mutual cooperation of the first positioning assembly and the second positioning assembly, accurate adjustment of the PCBA board in the X-axis direction and the Y-axis direction can be achieved, and accurate positioning in the Z-axis direction can be completed through an up-down moving mechanism in the second positioning assembly.

Description

Technical Field

[0001] This utility model relates to the field of PCBA board positioning fixture technology, specifically, to a positioning fixture for PCBA boards. Background Technology

[0002] PCBA is an abbreviation for "Printed Circuit Board Assembly." It refers to a printed circuit board with electronic components already installed. In electronic devices, the PCBA board plays a role in connecting various electronic components and is one of the core parts of electronic products.

[0003] Existing PCBA board positioning fixtures can only position PCBA boards in a single direction, which limits positioning accuracy and flexibility in handling various types of PCBA boards, restricting their versatility and applicability, and consequently reducing work efficiency. Currently, no effective solution has been proposed to address these technical problems. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a positioning fixture for PCBA boards to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A positioning fixture for PCBA boards includes a processing table, a first positioning component at the upper end of the processing table, a second positioning component directly above the first positioning component, and a controller at the upper end of the processing table.

[0007] Furthermore, in order to better ensure the positioning effect, the first positioning component includes multiple first motors. The first motors are symmetrically arranged on the upper end of the processing table through a fixing frame. The output shaft of the first motor is provided with a first threaded rod through a coupling, and the first threaded rod is arranged on the upper end of the processing table through a fixing seat.

[0008] Furthermore, to better ensure the positioning and adjustment effect, an adjustment plate is connected to the first threaded rod, a positioning plate is set at the upper end of the adjustment plate, an adjustment cavity is opened in the middle of the positioning plate, a second motor is set on one side of the positioning plate through a fixing frame, a first bevel gear is set on the output shaft of the second motor, a second bevel gear is meshed on the first bevel gear, an adjustment rod is fixedly set on the second bevel gear, one end of the adjustment rod extends from the outside of the positioning plate to the inside of the adjustment cavity, and a third bevel gear is set at the end of the adjustment rod inside the adjustment cavity.

[0009] Furthermore, to better ensure the positioning adjustment effect, a fourth bevel gear is meshed with the third bevel gear. A rotating rod is fixedly mounted on the fourth bevel gear, and the other end of the rotating rod is mounted on the inner wall of the adjustment cavity via a bearing. An adjusting gear is mounted on the rotating rod, and an adjusting rack is meshed with the adjusting gear. One side of the adjusting rack is connected to the inner wall of the adjustment cavity, and a first limiting plate is mounted on one end of the adjusting rack. Moving grooves are staggered on the adjusting plate, and the first limiting plate is slidably connected inside the moving grooves.

[0010] Furthermore, in order to better ensure the lateral positioning effect of the PCBA board, the second positioning component includes a movable groove, which is opened on one side of the first limiting plate. Multiple third motors are set on one side of the first limiting plate through a fixing bracket three. The output shaft of the third motor is connected to a second threaded rod, and the second threaded rod is set on one side of the first limiting plate through a fixing seat two. A limiting groove is opened on one side of the first limiting plate.

[0011] Furthermore, for better positioning and adjustment, a movable frame is threadedly connected to the second threaded rod, and the movable frame is slidably connected inside the limiting groove and the movable groove. Multiple limiting springs are symmetrically arranged inside the movable frame, and a second limiting plate is provided at one end of each limiting spring.

[0012] Furthermore, to better adjust the thickness of the PCBA board, the second positioning component includes a support frame, which is set on the upper end of the processing table. An adjustment seat is bolted to one side of the support frame, and an adjustment handle and a pressure column are connected to the adjustment seat. A connector is connected between the adjustment handle and the pressure column. A pressure plate is set at one end of the pressure column, and a test probe is set on the pressure plate. A guide post is slidably connected to the pressure plate, and one end of the guide post is set on one side of the support frame through a fixing seat. The other end of the guide post is set on the upper end of the processing table. Electric push rods are symmetrically arranged at the bottom end of the pressure plate and the top end of the adjustment plate. A buffer spring is set around the moving end of the electric push rod, and a positioning seat is set at the moving end of the electric push rod and the end of the buffer spring. The beneficial effects of this utility model are as follows: By cooperating with the first positioning component and the second positioning component, not only can the PCBA board be precisely adjusted in the X and Y axis directions, but the up-and-down moving mechanism in the second positioning component can also achieve precise positioning in the Z axis direction. The multi-motor drive system and fine gear transmission mechanism in the first positioning component ensure the PCBA board's fine-tuning capability on the horizontal plane, meeting the positioning requirements of PCBA boards of different sizes and shapes. In addition, the electric push rod and buffer spring design in the second positioning component not only improves the stability and safety during the positioning process, but also effectively avoids the risk of damage to the PCBA board. The first and second positioning components not only improve the efficiency and quality of PCBA board positioning, but also enhance the versatility and flexibility of the equipment. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is one of the structural diagrams of a positioning fixture for a PCBA board according to an embodiment of the present utility model;

[0015] Figure 2 This is a structural diagram of the first positioning component of a positioning fixture for PCBA boards according to an embodiment of the present utility model;

[0016] Figure 3 This is an exploded view of the structure of the first positioning component of a positioning fixture for PCBA boards according to an embodiment of the present invention. Figure 1 ;

[0017] Figure 4 This is a side sectional view of the structure of the first positioning component of a positioning fixture for PCBA boards according to an embodiment of the present utility model;

[0018] Figure 5 This is an exploded view of the structure of the first positioning component of a positioning fixture for PCBA boards according to an embodiment of the present invention. Figure 2 ;

[0019] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0020] Figure 7 yes Figure 5 Enlarged view at point B in the middle;

[0021] Figure 8 This is a partial structural diagram of a first positioning component and a second positioning component of a positioning fixture for a PCBA board according to an embodiment of the present utility model.

[0022] Figure 9 This is one of the structural schematic diagrams of a second positioning component of a positioning fixture for a PCBA board according to an embodiment of the present utility model;

[0023] Figure 10 This is a second schematic diagram of a positioning fixture for a PCBA board according to an embodiment of the present utility model;

[0024] Figure 11 This is a second schematic diagram of the structure of a second positioning component of a positioning fixture for a PCBA board according to an embodiment of the present utility model;

[0025] Figure 12 This is a structural separation diagram of the electric push rod, buffer spring, and positioning seat in the second positioning assembly of a positioning fixture for PCBA boards according to an embodiment of the present invention.

[0026] In the diagram: 1. Processing table; 2. First positioning assembly; 201. First motor; 202. First threaded rod; 203. Adjusting plate; 204. Positioning plate; 205. Second motor; 206. First bevel gear; 207. Second bevel gear; 208. Adjusting rod; 209. Third bevel gear; 210. Fourth bevel gear; 211. Rotating rod; 212. Adjusting gear; 213. Adjusting rack; 214. First limiting plate; 3. Second positioning assembly. Components; 301, movable groove; 302, third motor; 303, second threaded rod; 304, moving frame; 305, limit spring; 306, second limit plate; 307, support frame; 308, adjusting seat; 309, adjusting handle; 310, pressing column; 311, connecting piece; 312, pressing plate; 313, test probe; 314, electric push rod; 315, buffer spring; 316, positioning seat; 317, guide column; 4, controller. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1:

[0029] like Figures 1-12 As shown, a positioning fixture for PCBA boards according to an embodiment of the present invention includes a processing table 1. A first positioning component 2 is provided at the upper end of the processing table 1 for positioning the PCBA board along the X-axis. A second positioning component 3 is provided directly above the first positioning component 2 for positioning the PCBA board along the Y-axis and for buffering the positioned PCBA board during testing. It can also be adjusted according to the thickness of the PCBA board being tested, thereby better ensuring the positioning effect of the PCBA board. A controller 4 is provided at the upper end of the processing table 1.

[0030] Example 2:

[0031] like Figures 1-12As shown, according to an embodiment of the present invention, a positioning fixture for PCBA boards includes a first positioning component 2 comprising a plurality of first motors 201. The first motors 201 are symmetrically arranged on the upper end of the processing table 1 via a fixing frame. The output shaft of the first motor 201 is provided with a first threaded rod 202 via a coupling. The first threaded rod 202 is provided on the upper end of the processing table 1 via a fixing seat. An adjusting plate 203 is connected to the first threaded rod 202. A positioning plate 204 is provided on the upper end of the adjusting plate 203. An adjusting cavity is provided in the middle of the positioning plate 204.

[0032] A second motor 205 is mounted on one side of the positioning plate 204 via a second fixing bracket. A first bevel gear 206 is mounted on the output shaft of the second motor 205. A second bevel gear 207 is meshed with the first bevel gear 206. An adjusting rod 208 is fixedly mounted on the second bevel gear 207. One end of the adjusting rod 208 extends from the outside of the positioning plate 204 into the interior of the adjusting cavity. A third bevel gear 209 is mounted on the end of the adjusting rod 208 located inside the adjusting cavity. A fourth bevel gear is meshed with the third bevel gear 209. 210, the fourth bevel gear 210 is fixedly provided with a rotating rod 211, and the other end of the rotating rod 211 is provided on the inner wall of the adjustment cavity through a bearing. An adjustment gear 212 is provided on the rotating rod 211, and an adjustment rack 213 is meshed on the adjustment gear 212. One side of the adjustment rack 213 is connected to the inner wall of the adjustment cavity. One end of the adjustment rack 213 is provided with a first limiting plate 214. The adjustment plate 203 is provided with staggered moving grooves, and the first limiting plate 214 is slidably connected inside the moving groove.

[0033] In practical applications, when it is necessary to position the PCBA board, the PCBA board to be positioned is placed on the positioning plate 204. Then, the controller 4 starts the second motor 205. The output shaft of the second motor 205 drives the first bevel gear 206 to rotate. Then, the first bevel gear 206 and the second bevel gear 207 mesh with each other and drive the adjusting rod 208 to rotate. This causes the third bevel gear 209 and the fourth bevel gear 210 to mesh with each other and drive the rotating rod 211 and the adjusting gear 212 to rotate. Then, the adjusting gear 212 meshes with the adjusting rack 213 and drives the first limiting plate 214 to move from both sides of the positioning plate 204 towards the middle, thereby positioning the PCBA board along the X-axis.

[0034] After positioning is completed, the controller 4 starts the two first motors 201. Then the output shaft of the first motor 201 drives the first threaded rod 202 to rotate, thereby causing the adjusting plate 203 to move axially and move the adjusting plate 203 to the position to be processed.

[0035] Example 3:

[0036] like Figures 1-12As shown, according to an embodiment of the present invention, a positioning fixture for a PCBA board includes a second positioning component 3 comprising a movable groove 301. The movable groove 301 is opened on one side of a first limiting plate 214. A plurality of third motors 302 are provided on one side of the first limiting plate 214 via a fixing frame 3. The output shaft of the third motor 302 is connected to a second threaded rod 303, and the second threaded rod 303 is provided on one side of the first limiting plate 214 via a fixing seat 2. A limiting groove is opened on one side of the first limiting plate 214. A movable frame 304 is threadedly connected to the second threaded rod 303, and the movable frame 304 is slidably connected inside the limiting groove and the movable groove 301. A plurality of limiting springs 305 are symmetrically arranged inside the movable frame 304, and a second limiting plate 306 is inclinedly arranged at one end of each limiting spring 305.

[0037] The second positioning component 3 includes a support frame 307, which is mounted on the upper end of the processing table 1. An adjusting seat 308 is bolted to one side of the support frame 307. An adjusting handle 309 and a pressing column 310 are connected to the adjusting seat 308. A connecting piece 311 connects the adjusting handle 309 and the pressing column 310. A pressing plate 312 is mounted on one end of the pressing column 310. A test probe 313 is mounted on the pressing plate 312. A guide post 317 is slidably connected to the pressing plate 312. One end of the guide post 317 is mounted on one side of the support frame 307 via a fixed seat 4, and the other end of the guide post 317 is mounted on the upper end of the processing table 1. The bottom end of the lower pressure plate 312 and the upper end of the adjustment plate 203 are symmetrically provided with electric push rods 314. The electric push rods 314 on the adjustment plate 203 are embedded. The moving end of the electric push rod 314 is surrounded by a buffer spring 315. The moving end of the electric push rod 314 and one end of the buffer spring 315 are provided with a positioning seat 316.

[0038] In practical applications, when it is necessary to position the PCBA board along the Y-axis, the controller 4 starts the third motor 302, and then the output shaft of the third motor 302 drives the second threaded rod 303 to rotate. Then the moving frame 304 moves along the axial direction, and then the limiting spring 305 and the second limiting plate 306 cooperate with each other to position the PCBA board along the Y-axis.

[0039] When testing a PCBA board, the test pin 313 on the lower pressure plate 312 is pressed down by the coordinated action of the handle 309, connector 311, pressure post 310, pressure plate 312, and guide post 317. During the pressing process, the test PCBA board is buffered and positioned by the coordinated action of the electric push rod 314, buffer spring 315, and positioning seat 316. The positioning effect can also be better guaranteed by adjusting the thickness of the PCBA board.

[0040] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0041] In summary, using the above-described technical solution of this utility model, when it is necessary to position a PCBA board, the PCBA board to be positioned is placed on the positioning plate 204. Then, the controller 4 starts the second motor 205. The output shaft of the second motor 205 drives the first bevel gear 206 to rotate. Then, the first bevel gear 206 and the second bevel gear 207 mesh with each other, driving the adjusting rod 208 to rotate. This causes the third bevel gear 209 and the fourth bevel gear 210 to mesh with each other, driving the rotating rod 211 and the adjusting gear 212 to rotate. Then, the adjusting gear 212 meshes with the adjusting rack 213, driving the first limiting plate 214 from both sides of the positioning plate 204 towards... The PCBA board is moved in the middle to perform X-axis positioning. When Y-axis positioning of the PCBA board is required, the controller 4 starts the third motor 302. Then, the output shaft of the third motor 302 drives the second threaded rod 303 to rotate, and the moving frame 304 moves axially. Then, the limiting spring 305 and the second limiting plate 306 cooperate to position the PCBA board in the Y-axis. After positioning, the controller 4 starts the two first motors 201. Then, the output shaft of the first motor 201 drives the first threaded rod 202 to rotate, thereby causing the adjusting plate 203 to move axially, and then moving the adjusting plate 203 to the position to be processed.

[0042] When testing a PCBA board, the test pin 313 on the lower pressure plate 312 is pressed down by the coordinated action of the handle 309, connector 311, pressure post 310, pressure plate 312, and guide post 317. During the pressing process, the test PCBA board is buffered and positioned by the coordinated action of the electric push rod 314, buffer spring 315, and positioning seat 316. The positioning effect can also be better ensured by adjusting the thickness of the PCBA board. The above description is only a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A positioning tool for a PCBA board, characterized in that, Including processing platform (1), the upper end of processing platform (1) is provided with first positioning assembly (2), the upper side of first positioning assembly (2) is provided with second positioning assembly (3), and the upper end of processing platform (1) is provided with controller (4).

2. The positioning tool for PCBA board according to claim 1, wherein, The first positioning assembly (2) comprises a plurality of first motors (201), which are symmetrically arranged on the upper end of the processing platform (1) through the fixed frame, and the output shaft of the first motor (201) is provided with a first threaded rod (202) through the shaft coupling, and the first threaded rod (202) is arranged on the upper end of the processing platform (1) through the fixed seat.

3. The positioning tool for PCBA board according to claim 2, wherein, The first threaded rod (202) is connected with an adjusting plate (203), the upper end of the adjusting plate (203) is provided with a positioning plate (204), the middle part of the positioning plate (204) is provided with an adjusting cavity, one side of the positioning plate (204) is provided with a second motor (205) through a fixed frame two, the output shaft of the second motor (205) is provided with a first bevel gear (206), the first bevel gear (206) is engaged with a second bevel gear (207), the second bevel gear (207) is fixedly provided with an adjusting rod (208), one end of the adjusting rod (208) extends from the outside of the positioning plate (204) to the inside of the adjusting cavity, and one end of the adjusting rod (208) located in the adjusting cavity is provided with a third bevel gear (209).

4. The positioning tool for PCBA board according to claim 3, characterized in that, The third bevel gear (209) is engaged with a fourth bevel gear (210), the fourth bevel gear (210) is fixedly provided with a rotating rod (211), and the other end of the rotating rod (211) is arranged on the inner wall of the adjusting cavity through a bearing, the rotating rod (211) is provided with an adjusting gear (212), the adjusting gear (212) is engaged with an adjusting rack (213), one side of the adjusting rack (213) is connected to the inner wall of the adjusting cavity, one end of the adjusting rack (213) is provided with a first limiting plate (214), the adjusting plate (203) is provided with a moving groove, and the first limiting plate (214) is slidably connected in the moving groove.

5. The positioning tool for PCBA board according to claim 4, wherein, The second positioning assembly (3) comprises a movable slot (301), the movable slot (301) is arranged on one side of the first limiting plate (214), a plurality of third motors (302) are arranged on one side of the first limiting plate (214) through a fixed frame three, the output shaft of the third motor (302) is connected with a second threaded rod (303) through a connecting rod, and the second threaded rod (303) is arranged on one side of the first limiting plate (214) through a fixed seat two, and a limiting slot is arranged on one side of the first limiting plate (214).

6. The positioning tool for PCBA board according to claim 5, wherein, The second threaded rod (303) is threadedly connected with a moving frame (304), and the moving frame (304) is slidably connected in the limiting slot and the movable slot (301), a plurality of limiting springs (305) are symmetrically arranged in the moving frame (304), and one end of the limiting spring (305) is provided with a second limiting plate (306).

7. The positioning tool for PCBA board according to claim 6, wherein, The second positioning assembly (3) comprises a support frame (307) arranged at the upper end of the machining table (1), one side of the support frame (307) is provided with an adjusting seat (308) through bolts, the adjusting seat (308) is connected with an adjusting handle (309) and a pressing column (310), the adjusting handle (309) and the pressing column (310) are connected with a connecting piece (311), one end of the pressing column (310) is provided with a pressing plate (312), the pressing plate (312) is provided with a test needle (313), the pressing plate (312) is slidably connected with a guide column (317), one end of the guide column (317) is arranged at one side of the support frame (307) through a fixing seat four, the other end of the guide column (317) is arranged at the upper end of the machining table (1), the bottom end of the pressing plate (312) and the upper end of the adjusting plate (203) are symmetrically provided with an electric push rod (314), the periphery of the moving end of the electric push rod (314) is provided with a buffer spring (315), the moving end of the electric push rod (314) and one end of the buffer spring (315) are provided with a positioning seat (316).

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