Fixture for fixing and welding terminal with sealing ring

Abstract

The utility model provides a fixture for fixing and welding a terminal with a sealing ring, which comprises a positioning base body, a positioning plate is arranged at the top of the positioning base body, a circuit board limiting groove is arranged on the positioning plate, a terminal limiting groove is arranged at the bottom of the circuit board limiting groove, a pair of rotary clamping cylinders is arranged on the positioning base body, and a sealing ring is arranged on the rotary clamping cylinders. The positioning plate is located between the pair of rotary clamping air cylinders, and the pair of rotary clamping air cylinders are provided with pressing plates used for pressing the circuit board in the circuit board limiting grooves respectively. According to the fixing and welding tool for the terminal with the sealing ring, the sealing ring can be quickly matched with a circuit board and the terminal by using mechanical force, so that the phenomenon that defective products are welded due to uneven stress caused by welding while pressing by a welding worker is avoided; in use, cooperation among the circuit board, the sealing ring and the terminal can be completed only by pulling the pneumatic switch, and the operation process is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the field of welding tools, in particular to a terminal fixing welding tool with a sealing ring. Background Art

[0002] When welding the terminals on the HED300 circuit board, a sealing ring needs to be installed between the circuit board and the terminal. The parts of the sealing ring that contact the circuit board and the terminal have raised triangular ribs. When welding, the terminal and the circuit board need to be forced to deform the sealing ring to achieve a better sealing effect. The usual method is that the welder presses the circuit board down with his hand to squeeze and deform the sealing ring while welding with an electric soldering iron. Due to uneven force, the welded terminals often cannot achieve the desired sealing effect.

[0003] In order to achieve mechanical clamping, the utility model patent with the authorization announcement number CN210848745U discloses a terminal welding tool, including a positioning device for placing cables and terminals to be welded; a clamping device for clamping terminals and wiring harnesses; a transmission device for driving the clamping device; the transmission device includes a hand-crank switch and a travel switch, the hand-crank switch is connected to the travel switch, and the travel switch is controlled by the hand-crank switch; the other end of the travel switch is connected to the clamping device, and the clamping device is controlled by the travel switch to play a clamping role. In the device, the upper clamping device is fixed, and the terminals and wiring harnesses are clamped through the transmission of the lower clamping device, ensuring that there is sufficient pressure on both ends of the workpiece. However, the device has a complex structure and is only suitable for crimping between round cables and cable terminals, and is not suitable for fixing and welding between flat circuit boards, sealing rings and terminals. Utility Model Content

[0004] In order to be able to use mechanical force to press the sealing ring between the circuit board and the terminal when welding the circuit board and the terminal together, the technical solution adopted by the utility model is: a terminal fixing welding tool with a sealing ring, including a positioning base, a positioning plate is arranged on the top of the positioning base, a circuit board limiting groove is opened on the positioning plate, a terminal limiting groove is opened at the bottom of the circuit board limiting groove, a pair of rotary clamping cylinders is arranged on the positioning base, the positioning plate is located between the pair of rotary clamping cylinders, and the pair of rotary clamping cylinders are respectively provided with pressure plates for pressing the circuit board into the circuit board limiting groove.

[0005] Based on the above, in order to pre-press and position the circuit board, a pair of pre-pressing blocks are rotatably arranged on the positioning plate at the edge of the circuit board limiting groove.

[0006] Based on the above, a pair of pre-pressing blocks are arranged along the diagonal line of the circuit board limiting groove.

[0007] Based on the above, in order to apply pressure symmetrically, a pair of rotary clamping cylinders are arranged along the center line of the circuit board limiting groove.

[0008] Based on the above, the rotary clamping cylinder includes a cylinder body, on which a rotary clamping cylinder air inlet, a regulating valve, a manual valve and a rotating telescopic shaft are arranged, and the pressure plate is arranged on the rotating telescopic shaft.

[0009] Based on the above, the size of the circuit board limiting groove is larger than the size of the terminal limiting groove, and the terminal limiting groove is opened at the center of the circuit board limiting groove.

[0010] Based on the above, in order to buffer the pressure and reduce friction, a silicone pad is provided at the bottom of the pressing plate.

[0011] Based on the above, in order to avoid interference, a pair of pre-pressing blocks are rotatably arranged at the edge of the circuit board limiting groove by screws, and a silicone pad is arranged at the bottom of the pre-pressing block.

[0012] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the terminal fixing welding tool provided by the utility model can realize the rapid matching of the sealing ring with the circuit board and the terminal by mechanical force, avoiding the phenomenon of uneven force and defective welding caused by the welder pressing and welding at the same time. When using, only the pneumatic switch needs to be turned to complete the matching between the circuit board, the sealing ring and the terminal, and the operation process is convenient and fast. Furthermore, a silicone pad is designed at the part where the first pressing block and the second pressing block contact the circuit board, which can protect the surface of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the welding assembly of the circuit board, sealing ring and terminal.

[0014] Figure 2 yes Figure 1 Schematic diagram of the AA section structure along the middle.

[0015] Figure 3 The utility model is a schematic diagram of the overall structure of a terminal fixing welding tool with a sealing ring provided by the utility model.

[0016] Figure 4 The utility model is a schematic diagram of a terminal fixing welding tool with a sealing ring and an assembly structure of the terminal and the sealing ring.

[0017] Figure 5 The utility model provides a schematic diagram of a terminal fixing welding tool with a sealing ring and an assembly structure of the terminal, the sealing ring and the circuit board.

[0018] In the figure: 1. circuit board; 2. terminal; 3. sealing ring; 4. positioning base; 5. positioning plate; 6. first rotating telescopic axis; 7. first pressure plate; 8. first pre-compression block; 9. circuit board limiting groove; 10. second pressure plate; 11. second rotating telescopic axis; 12. air inlet of rotary clamping cylinder; 13. regulating valve; 14. manual valve; 15. second pre-compression block; 16. terminal limiting groove. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0020] Example 1

[0021] This embodiment provides a terminal fixing welding tool with a sealing ring, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it comprises a positioning base 4, a positioning plate 5 is arranged on the top of the positioning base 4, and a circuit board limiting groove 9 is opened on the positioning plate 5.

[0022] A terminal limiting groove 16 is provided at the bottom of the circuit board limiting groove 9, and the terminal limiting groove 16 is used to install the terminal 2 and the sealing ring 3. A pair of rotary clamping cylinders are provided on the positioning base 4. The positioning plate 5 is located between the pair of rotary clamping cylinders. A pair of rotary clamping cylinders are respectively provided with a pressing plate for pressing the circuit board 1 into the circuit board limiting groove 9. For the convenience of distinction, the two pressing plates are respectively recorded as the first pressing plate 7 and the second pressing plate 10. The positioning base is a rectangular box. The rotary clamping cylinder is a conventional type of rotary clamping cylinder.

[0023] In order to pre-press and position the circuit board, a pair of pre-pressing blocks are rotatably provided on the positioning plate 5 at the edge of the circuit board limiting groove 9 , which are respectively referred to as a first pre-pressing block 8 and a second pre-pressing block 15 .

[0024] The rotary clamping cylinder includes a cylinder body, on which a rotary clamping cylinder air inlet 12, a regulating valve 13, a manual valve 14 and a rotating telescopic shaft are arranged. The pressing plate is arranged on the rotating telescopic shaft. In order to buffer the pressure and reduce the friction, a silicone pad is arranged at the bottom of the pressing plate. For the convenience of distinction, the two rotating telescopic shafts are respectively recorded as the first rotating telescopic shaft 6 and the second rotating telescopic shaft 11.

[0025] Example 2

[0026] This embodiment provides a terminal fixing welding tool with a sealing ring, which is different from the first embodiment mainly in that: in this embodiment: a pair of pre-pressing blocks are arranged along the diagonal lines of the circuit board limiting groove. In order to apply pressure symmetrically, a pair of rotary clamping cylinders are arranged along the center line of the circuit board limiting groove.

[0027] Example 3

[0028] This embodiment provides a terminal fixing welding tool with a sealing ring, and the main difference from Embodiment 1 is that in this embodiment: the size of the circuit board limiting groove is larger than the size of the terminal limiting groove, and the terminal limiting groove is opened at the center of the circuit board limiting groove.

[0029] Example 4

[0030] This embodiment provides a terminal fixing welding tool with a sealing ring, and the main difference from Embodiment 1 is that in this embodiment: in order to avoid interference, a pair of pre-compression blocks are rotatably arranged at the edge of the circuit board limiting groove by screws, and a silicone pad is arranged at the bottom of the pre-compression block.

[0031] Specifically, when welding is performed using the terminal fixing welding tool provided by the utility model for a sealing ring, the operating steps are as follows:

[0032] First adjust the tooling to the initial state, assemble the sealing ring and the terminal and put them into the terminal limit groove together, put the circuit board into the circuit board limit groove to match the terminal, rotate the two pre-pressing blocks to press the circuit board, turn the manual valve clockwise, and the two rotary clamping cylinders work at the same time, driving the first pressure plate and the second pressure plate to rotate and press down on the circuit board. At this time, the circuit board is forced to move downward, and the sealing ring is squeezed together with the top of the terminal to deform it, achieving the most perfect sealing effect, and then, the terminal welding foot is welded to the circuit board. After welding is completed, turn the manual valve counterclockwise, and the two rotary clamping cylinders work at the same time, driving the first pressure plate and the second pressure plate to rise and rotate together to separate from the circuit board, and the pre-pressing block is rotated to take out the circuit board, thereby completing the welding.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A tool for fixing and welding a terminal with a sealing ring, characterized in that: It includes a positioning base, a positioning plate is arranged on the top of the positioning base, a circuit board limiting groove is opened on the positioning plate, a terminal limiting groove is opened at the bottom of the circuit board limiting groove, a pair of rotary clamping cylinders are arranged on the positioning base, the positioning plate is located between the pair of rotary clamping cylinders, and the pair of rotary clamping cylinders are respectively provided with a pressing plate for pressing the circuit board into the circuit board limiting groove.

2. The tool for fixing and welding a terminal with a sealing ring according to claim 1, characterized in that: A pair of pre-pressing blocks are rotatably arranged on the positioning plate at the edge of the circuit board limiting groove.

3. The tooling for fixing and welding a terminal with a sealing ring according to claim 2, characterized in that: A pair of pre-pressing blocks are arranged along the diagonal lines of the circuit board limiting grooves.

4. The tool for fixing and welding a terminal with a sealing ring according to claim 1, 2 or 3, characterized in that: A pair of rotary clamping cylinders are arranged along the center line of the circuit board limiting groove.

5. The tool for fixing and welding a terminal with a sealing ring according to claim 1, characterized in that: The rotary clamping cylinder comprises a cylinder body, on which a rotary clamping cylinder air inlet, a regulating valve, a manual valve and a rotary telescopic shaft are arranged, and the pressing plate is arranged on the rotary telescopic shaft.

6. The tool for fixing and welding a terminal with a sealing ring according to claim 1, 2, 3 or 5, characterized in that: The size of the circuit board limiting groove is larger than that of the terminal limiting groove, and the terminal limiting groove is arranged at the center of the circuit board limiting groove.

7. The tool for fixing and welding a terminal with a sealing ring according to claim 1, characterized in that: A silica gel pad is arranged at the bottom of the pressing plate.

8. The tool for fixing and welding a terminal with a sealing ring according to claim 2 or 3, characterized in that: A pair of pre-pressing blocks are rotatably arranged at the edge of the circuit board limiting groove by screws, and a silicone pad is arranged at the bottom of the pre-pressing block.

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