Press fitting equipment for assembling PIN and PCBA (Printed Circuit Board Assembly)

Abstract

The utility model discloses press-fitting equipment for assembling a PIN needle and a PCBA (Printed Circuit Board Assembly), which comprises a press and an assembling clamp, and is characterized in that the press comprises a base, a pressing mechanism and a support column, and the pressing mechanism is arranged right above the base through the support column; the downward pressing mechanism comprises a driving shaft, a driven rod and a pressing plate, the driving shaft and the driven rod are arranged in the mounting base in a penetrating mode, the mounting base is fixed to the supporting column, the driving shaft is perpendicular to the driven rod, a transmission gear is fixedly connected to the driving shaft, a rack structure is arranged on the driven rod, and the transmission gear is meshed with the rack structure on the driven rod; a spring is arranged on the outer side wall of the driven rod, one end of the spring abuts against the upper end face of the installation base, the other end of the spring abuts against the lower end face of the installation block, the installation block is located at the top end of the driven rod, and the spring is used for resetting of the driving shaft and the driven rod. The upper end face of the pressing plate is connected with the bottom end of the driven rod.

Description

Technical Field

[0001] The utility model relates to a press-fit device for assembling a PIN needle and a PCBA. Background Art

[0002] The process flow of SMT patch processing is complicated. Even the precise patch processing equipment will produce products with certain defects. When we encounter some processing defects or undesirable phenomena that we do not want to see (the main undesirable phenomena are: empty soldering, insufficient tin, displacement, missing parts, etc.), the problematic PCBA products cannot be allowed to flow into the next processing link, and need to be arranged to enter the processing rework process.

[0003] When employees repair PCBA circuit boards, they usually place them on the workbench at the workstation for repair work. The product is in direct contact with the workbench, which may cause dust absorption and fail to ensure the cleanliness and anti-static requirements of the product. Because the product is mounted with a variety of electronic components, the PCBA surface is not flat and is not stable when placed on the workbench. Employees cannot ensure the stability of quality during the repair process.

[0004] To address this problem, workers can use a special workbench to ensure the stable placement of the PCBA, but this type of workbench is not universally applicable. Compared with the assembly of the headlight PCBA and PIN, this type of workbench cannot improve work efficiency. In this regard, adding a press can assist in assembly and save effort, thereby improving efficiency. However, compared with pure manual assembly, the pressure applied by the press is more difficult to control. Excessive pressure can easily cause damage to parts, while too little pressure cannot complete the assembly. Under this concern, the expected effect cannot be achieved. Utility Model Content

[0005] The purpose of the utility model is to solve the above deficiencies in the prior art and provide a press-fitting device for assembling a PIN pin and a PCBA.

[0006] A press-fit device for assembling a PIN pin and a PCBA, comprising a press machine and an assembly fixture, wherein the press machine comprises a base, a pressing mechanism and a support, and the pressing mechanism is arranged directly above the base through the support;

[0007] The assembly fixture is installed between the base and the pressing mechanism through a translation mechanism. The assembly fixture includes a first fixture and a second fixture. The first fixture is used to fix the position of the PIN needle. The first fixture includes a fixture table. The fixture table is a column structure. The upper end surface of the fixture table is provided with a plurality of first limiting grooves along the longitudinal direction. The upper end surface of the fixture table is provided with a clearance groove along the transverse direction at a predetermined position.

[0008] The second fixture is used to fix the PCBA. The second fixture includes two fixture columns. The fixture columns are prismatic structures. The two fixture columns are respectively located on both sides of the clearance groove along the lateral direction of the fixture table. One side end faces of the two fixture columns are opposite to each other, and the opposite side end faces are provided with a second limiting groove facing each other along the vertical direction. The height of the fixture column is higher than the height of the fixture table.

[0009] The pressing mechanism includes a driving shaft, a driven rod and a pressure plate. The driving shaft and the driven rod are inserted into a mounting seat, and the mounting seat is fixed on a pillar. The driving shaft and the driven rod are perpendicular to each other. A transmission gear is fixedly connected to the driving shaft, and a rack structure is provided on the driven rod. The transmission gear is meshed with the rack structure on the driven rod. A pull rod seat with a cylindrical structure is provided at one end of the driving shaft, and the pull rod seat extends out of the mounting seat. A pull rod is provided on the pull rod seat, and a spring is provided on the outer side wall of the driven rod, one end of the spring abuts against the upper end face of the mounting seat, and the other end abuts against the lower end face of the mounting block. The mounting block is located at the top end of the driven rod, and the spring is used for resetting the driving shaft and the driven rod. The upper end face of the pressure plate is connected to the bottom end of the driven rod.

[0010] Preferably, the fixture table is installed on the adjustment seat, the upper end surface of the adjustment seat is provided with a mounting groove, the fixture table is embedded in the mounting groove, and the adjustment seat is used to adjust the height difference between the fixture table and the fixture column.

[0011] Preferably, the translation mechanism includes a bottom plate and a sliding plate. The bottom plate is placed on the upper end surface of the base. A supporting foot is provided below the portion of the bottom plate extending beyond the base. A sliding block is provided on the lower end surface of the sliding plate. The sliding block cooperates with a sliding rail, and the sliding rail is installed on the upper end surface of the bottom plate.

[0012] Preferably, the assembly fixture is fixed to the mounting plate by bolts, and the mounting plate is mounted to the base plate by bolts.

[0013] Preferably, a front limit block and a rear limit block are provided on the bottom plate at predetermined positions along the direction of the movement track of the sliding plate.

[0014] Preferably, a handle is provided on the side of the sliding plate.

[0015] Preferably, a press block is provided at a predetermined position on the lower end surface of the pressing plate, and a third limiting groove is provided on the lower end surface of the pressing block, and the third limiting groove is used for sleeve connection with the PCBA.

[0016] Preferably, at least two guide posts are provided on the pressing plate, the guide posts are perpendicular to the pressing plate and extend downward, a guide sleeve is provided on the sliding plate, and a guide hole is provided on the upper end surface of the guide sleeve.

[0017] Preferably, the upper end surface of the sliding plate is provided with a limiting plate corresponding to the limiting column.

[0018] Preferably, corresponding limiting bolts are respectively provided on the mounting block and the mounting seat.

[0019] Beneficial effects: Compared with the prior art, the utility model pre-positions the PIN and PCBA by assembling a fixture, and then applies pressure to the PCBA with a pressing plate, so that the PCBA is plugged into the bayonet on the PIN, and an interference fit between the two is achieved. In this process, the staff only needs to install the PIN and PCBA in the corresponding fixture in order, and then operate the press to complete the operation. The operation is simpler and more convenient, and the positioning of the PIN and PCBA is more accurate, thereby improving work efficiency and quality;

[0020] In addition, the assembly fixture can be moved through the translation mechanism. The assembly fixture is moved to the bottom of the pressing mechanism, and the press is operated to complete the assembly. The assembly fixture is moved out from under the pressing mechanism to facilitate the staff to take materials and clamp PIN needles and PCBA. At the same time, the track, front limit block and rear limit block position the assembly fixture to ensure that the assembly fixture is in a suitable position, which is convenient for the operator to position, thereby improving the efficiency and quality of assembly.

[0021] At the same time, guide posts and guide sleeves are provided to assist in the positioning of the pressing plate and the assembly fixture. When the pressing plate is pressed down and the guide posts are inserted into the guide sleeves, it indicates that the assembly fixture has moved to the predetermined position. When the assembly fixture has not moved to the predetermined position, the press machine is operated and the pressing plate is pressed down, and the guide posts will hit the limit plate, thereby preventing the pressing plate from being pressed down and avoiding misoperation.

[0022] In addition, corresponding limit bolts are respectively provided on the mounting seat and the mounting block to limit the formation of the press and prevent the operator from operating it incorrectly, which may cause the pressing plate to exert excessive force on the PCBA and damage the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a press-fit device for assembling PIN pins and PCBA;

[0024] Figure 2 is a schematic diagram of the pressing mechanism;

[0025] Figure 3 It is the working principle diagram of the pressing mechanism;

[0026] Figure 4 is a schematic diagram of assembling the assembly fixture and the sliding plate;

[0027] Figure 5 is a schematic diagram of the first clamp;

[0028] Figure 6 is a schematic diagram of the fixture column;

[0029] Figure 7 It is a structural schematic diagram of the pressure plate;

[0030] Figure 8It is the assembly diagram of the base plate;

[0031] Fig. 9 This is the assembly diagram of PCBA and PIN needle;

[0032] In the figure, 1, pressing mechanism, 2, assembly fixture, 3, translation mechanism, 4, pillar, 5, mounting seat, 6, pressure plate, 7, guide column, 8, base, 9, press-in block, 10, spring, 11, pull rod seat, 12, pull rod, 13, driven rod, 14, driving shaft, 15, transmission gear, 16, first fixture, 17, fixture column, 18, mounting plate, 19, sliding plate, 20, slider, 21, handle, 22, guide sleeve, 23, limit plate, 24, adjustment seat, 25, make way slot, 26, first limit slot, 27, second limit slot, 28, third limit slot, 29, bottom plate, 30, front limit block, 31, rear limit block, 32, slide rail, 33, support foot, 34, PCBA, 35, PIN needle, 36, limit bolt, 37, mounting block. DETAILED DESCRIPTION

[0033] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0034] like Figure 1-9 As shown, the pressing mechanism 1, the assembly fixture 2, the translation mechanism 3, the pillar 4, the mounting seat 5, the pressing plate 6, the guide column 7, the base 8, the pressing block 9, the spring 10, the pull rod seat 11, the pull rod 12, the driven rod 13, the driving shaft 14, the transmission gear 15, the first fixture 16, the fixture column 17, the mounting plate 18, the sliding plate 19, the slider 20, the handle 21, the guide sleeve 22, the limit plate 23, the adjustment seat 24, the yielding groove 25, the first limit groove 26, the second limit groove 27, the third limit groove 28, the bottom plate 29, the front limit block 30, the rear limit block 31, the slide rail 32, the support foot 33, the PCBA 34, the PIN needle 35, the limit bolt 36, and the mounting block 37;

[0035] A press-fitting device for assembling a PIN pin and a PCBA comprises a press machine and an assembly fixture 2, wherein the press machine comprises a base 8, a pressing mechanism 1, and a support 4, wherein the pressing mechanism 1 is arranged directly above the base 8 through the support 4;

[0036] The pressing mechanism 1 includes a driving shaft 14, a driven rod 13, and a pressure plate 6. The driving shaft 14 and the driven rod 13 are inserted into the mounting seat 5, and the mounting seat 5 is fixed on the pillar 4. The driving shaft 14 and the driven rod 13 are perpendicular to each other. A transmission gear 15 is fixedly connected to the driving shaft 14, and a rack structure is provided on the driven rod 13. The transmission gear 15 is meshed with the rack structure on the driven rod 13. A cylindrical pull rod seat 11 is provided at one end of the driving shaft 14. The pull rod seat 11 extends out of the mounting seat 5. A pull rod 12 is provided on the pull rod seat 11. A spring 10 is provided on the outer side wall of the driven rod 13. One end of the spring 10 abuts against the upper end surface of the mounting seat 5, and the other end abuts against the lower end surface of the mounting block 3737. The mounting block 3737 is located at the top end of the driven rod 13. The spring is used for resetting the driving shaft and the driven rod. Corresponding limit bolts 36 are respectively provided on the mounting block 37 and the mounting seat. The limit bolts 36 are used to limit the stroke of the driven rod.

[0037] The upper end surface of the pressing plate 6 is connected to the bottom end of the driven rod 13, and the lower end surface of the pressing plate 6 is provided with a pressing block 9 at a predetermined position, and the lower end surface of the pressing block 9 is provided with a third limiting groove 28, and the third limiting groove 28 is used to be sleeved with the PCBA34.

[0038] The assembly fixture 2 is installed between the base 8 and the pressing mechanism 1 through the translation mechanism 3. The translation mechanism 3 includes a bottom plate 29 and a sliding plate 19. The bottom plate 29 is placed on the upper end surface of the base 8. A supporting foot 33 is provided below the portion of the bottom plate 29 that exceeds the base 8. A slider 20 is provided on the lower end surface of the sliding plate 19. The slider 20 is movably matched with a slide rail 32. The slide rail 32 is installed on the upper end surface of the bottom plate 29. A front limit block 30 and a rear limit block 31 are provided on the bottom plate 29 at predetermined positions along the movement trajectory of the sliding plate 19. A handle 21 is provided on the side of the sliding plate 19. After the handle is released, under the action of the torsion spring, the active shaft rotates to drive the driven rod to rise.

[0039] The assembly fixture 2 is fixed to the mounting plate 18 by bolts, and the mounting plate 18 is installed on the bottom plate 29 by bolts. The assembly fixture 2 includes a first fixture 16 and a second fixture. The first fixture 16 is used to fix the position of the PIN needle 35. The first fixture 16 includes a fixture table. The fixture table is a column structure, and a plurality of first limiting grooves 26 are provided on the upper end surface thereof along the longitudinal direction. A clearance through groove 25 is provided on the upper end surface of the fixture table at a predetermined position along the transverse direction.

[0040] The second fixture is used to fix the PCBA 34. The second fixture includes two fixture columns 17. The fixture columns 17 are prismatic structures. The two fixture columns 17 are respectively located on both sides of the clearance groove 25 along the lateral direction of the fixture table. One side end faces of the two fixture columns 17 are opposite to each other, and the opposite side end faces are provided with a second limiting groove 27 facing each other along the vertical direction. The height of the fixture column 17 is higher than the height of the fixture table.

[0041] In addition, the fixture table is installed on the adjustment seat 24 . The upper end surface of the adjustment seat 24 is provided with a mounting groove, and the fixture table is embedded in the mounting groove. The adjustment seat 24 is used to adjust the height difference between the fixture table and the fixture column 17 .

[0042] Two guide columns 7 are fixed on the pressure plate 6 through a threaded structure. The guide columns 7 are perpendicular to the pressure plate 6 and extend downward. A guide sleeve 22 is passed through the sliding plate 19. The upper end surface of the guide sleeve 22 is provided with a guide hole. The upper end surface of the sliding plate 19 is provided with a limit plate 23 corresponding to the limit column.

[0043] Instructions for use: The operator holds the handle 21 and pulls the sliding plate 19 out along the track. First, clamp the PIN in the first limiting groove 26 of the fixture as required, so that the PIN's clamping part (i.e., the part assembled with the PCBA) is in the yielding groove 25. Then, clamp the PCBA in the second fixture, so that both sides of the PCBA are in the second limiting grooves 27 respectively, and move the PCBA downward until it touches the mouth of the PIN and stops.

[0044] The staff member holds the handle 21 and moves the sliding plate 19 until it collides with the front limit block 30. At this time, it indicates that the assembly fixture 2 is in the predetermined working position. The pull rod 12 of the press is operated to press the pressing plate 6 downward. The groove of the pressing block 9 is sleeved on the outside of the PCBA board to perform a secondary limit on the PCBA to prevent the movement trend of the PCBA from deviating and avoiding damage. During the pressing process of the pressing plate 6, the guide column 7 is inserted into the guide sleeve 22 to ensure that the movement trajectory of the pressing plate 6 is vertically downward without shaking.

[0045] During the pressing process of the pressing plate 6, when the assembly fixture 2 is in the correct working position, the guide column 7 will be inserted into the guide sleeve 22, and the movement of the pressing plate 6 will not be hindered, so that the PCBA can be pressed to complete the assembly. At the same time, when the two limit bolts 36 collide, it indicates that the PCBA and the PIN needle have been assembled, and the driven rod stops descending to prevent the parts from being damaged by continued pressing.

[0046] When the assembly fixture 2 is not in the correct working position, the guide column 7 will hit the guide plate, thereby hindering the movement of the pressure plate 6 and preventing the pressure plate 6 from contacting the PCBA, which will cause damage to the PCBA. At this time, the staff will check and adjust the position of the assembly fixture 2 and perform the operation again.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A press-fit device for assembling PIN pins and PCBA, characterized in that: It includes a press and an assembly fixture. The press includes a base, a pressing mechanism, and a support. The pressing mechanism is arranged directly above the base through the support. The assembly fixture is installed between the base and the pressing mechanism through a translation mechanism. The assembly fixture includes a first fixture and a second fixture. The first fixture is used to fix the position of the PIN needle. The first fixture includes a fixture table. The fixture table is a column structure, and a plurality of first limiting grooves are provided on the upper end surface thereof along the longitudinal direction. A clearance groove is provided on the upper end surface of the fixture table at a predetermined position along the transverse direction. The second fixture is used to fix the PCBA, and the second fixture includes two fixture columns. The fixture columns are prismatic structures. The two fixture columns are respectively located on both sides of the clearance groove along the lateral direction of the fixture table. One side end faces of the two fixture columns are opposite to each other, and the opposite side end faces are provided with a second limiting groove facing each other along the vertical direction. The height of the fixture column is higher than the height of the fixture table. The pressing mechanism includes a driving shaft, a driven rod and a pressure plate. The driving shaft and the driven rod are inserted into a mounting seat. The mounting seat is fixed on a pillar. The driving shaft and the driven rod are perpendicular to each other. A transmission gear is fixedly connected to the driving shaft. The driven rod is provided with a rack structure. The transmission gear is meshed with the rack structure on the driven rod. A pull rod seat with a cylindrical structure is provided at one end of the driving shaft. The pull rod seat extends out of the mounting seat. A pull rod is provided on the pull rod seat. A spring is provided on the outer side wall of the driven rod. One end of the spring abuts against the upper end surface of the mounting seat, and the other end abuts against the lower end surface of the mounting block. The mounting block is located at the top end of the driven rod. The spring is used for resetting the driving shaft and the driven rod. The upper end surface of the pressure plate is connected to the bottom end of the driven rod.

2. A press-fitting device for assembling a PIN pin and a PCBA according to claim 1, characterized in that: The fixture table is installed on the adjustment seat, the upper end surface of the adjustment seat is provided with a mounting groove, the fixture table is embedded in the mounting groove, and the adjustment seat is used to adjust the height difference between the fixture table and the fixture column.

3. The press-fitting device for assembling a PIN pin and a PCBA according to claim 1, characterized in that: The translation mechanism includes a bottom plate and a sliding plate. The bottom plate is placed on the upper end surface of the base. A supporting foot is provided below the part of the bottom plate that extends beyond the base. A sliding block is provided on the lower end surface of the sliding plate. The sliding block cooperates with a sliding rail, and the sliding rail is installed on the upper end surface of the bottom plate.

4. The press-fitting device for assembling a PIN pin and a PCBA according to claim 3, characterized in that: The assembly fixture is fixed to the mounting plate by bolts, and the mounting plate is mounted to the bottom plate by bolts.

5. The press-fitting device for assembling a PIN pin and a PCBA according to claim 3, characterized in that: A front limit block and a rear limit block are arranged on the bottom plate at predetermined positions along the moving track direction of the sliding plate.

6. The press-fitting device for assembling a PIN pin and a PCBA according to claim 4, characterized in that: A handle is provided on the side of the sliding plate.

7. The press-fitting device for assembling a PIN pin and a PCBA according to claim 3, characterized in that: A pressing block is provided at a predetermined position on the lower end surface of the pressing plate, and a third limiting groove is provided on the lower end surface of the pressing block. The third limiting groove is used for sleeve connection with the PCBA.

8. A press-fitting device for assembling a PIN and a PCBA according to claim 7, characterized in that: At least two guide posts are arranged on the pressing plate, the guide posts are perpendicular to the pressing plate and extend downward, the sliding plate is provided with a guide sleeve, and the upper end surface of the guide sleeve is provided with a guide hole.

9. The press-fitting device for assembling a PIN pin and a PCBA according to claim 8, characterized in that: The upper end surface of the sliding plate is provided with a limiting plate corresponding to the limiting column.

10. The press-fitting device for assembling a PIN pin and a PCBA according to claim 1, characterized in that: The mounting block and the mounting seat are respectively provided with corresponding limiting bolts.

Images