Welding device for chip resistor

Abstract

The utility model discloses a chip resistor welding device, which belongs to the technical field of chip resistors and comprises a workbench, a supporting block is fixedly connected to the top end of the workbench, a placing groove is formed in the top end of the supporting block, a positioning assembly is arranged above the supporting block and comprises symmetrically arranged pressing plates, one end of each pressing plate is fixedly connected with a connecting rod, and the other end of each pressing plate is fixedly connected with a connecting rod. A plurality of U-shaped limiting blocks are arranged between the two pressing plates, connecting blocks are fixedly connected between the adjacent U-shaped limiting blocks, and two connecting blocks are fixedly connected with the two pressing plates respectively. According to the utility model, the positioning assembly and the U-shaped moving plate are arranged, and the position of the U-shaped moving plate is limited through the U-shaped limiting block and the U-shaped limiting frame in the positioning assembly, so that the position of the chip resistor in the U-shaped moving plate is positioned, and the position of the chip resistor on a circuit board does not need to be continuously adjusted; time and labor are saved, and meanwhile the chip resistor welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chip resistors, in particular to a welding device for chip resistors. Background Art

[0002] Chip resistors are a type of metal glass uranium resistors. They are made by mixing metal powder and glass uranium powder and printing them on a substrate using screen printing. They are resistant to moisture, high temperatures, and have a small temperature coefficient.

[0003] The existing chip resistor welding is to first tin the circuit board, then use tweezers to clamp the chip resistor to the circuit board and place it at a specified position. Since the chip resistor is small in size, it is necessary to use tweezers to continuously adjust the position of the chip resistor after clamping it on the circuit board so that one end of the chip resistor fits with the tin on the circuit board. Constantly adjusting the position of the chip resistor on the circuit board is time-consuming and laborious, and it also reduces the welding efficiency of the chip resistor. Therefore, a chip resistor welding device is proposed to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problems in the above-mentioned technology and proposes a welding device for chip resistors.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A welding device for chip resistors comprises a workbench, a support block is fixedly connected to the top of the workbench, a placement groove is provided at the top of the support block, a baffle is fixedly connected in the placement groove, a positioning assembly is arranged above the support block, the positioning assembly comprises symmetrically arranged pressure plates, one end of the pressure plates is fixedly connected to a connecting rod, a plurality of U-shaped limit blocks are arranged between two of the pressure plates, a connecting block is fixedly connected between adjacent U-shaped limit blocks, wherein two of the connecting blocks are fixedly connected to two pressure plates respectively, a plurality of U-shaped limit frames are arranged between the pressure plates, a fixing rod is fixedly connected between adjacent U-shaped limit frames, wherein two of the fixing rods are fixedly connected to two pressure plates respectively.

[0007] Preferably, an adjustment assembly is provided on one side of one of the connecting rods, and the adjustment assembly includes a screw rod rotatably connected to the top of the workbench, and a nut block is threadedly connected to the surface of the screw rod, and one of the connecting rods is fixedly connected to the surface of the nut block, and a handle is fixedly connected to the surface of the screw rod.

[0008] Preferably, a slide rail is fixedly connected to the top of the workbench, the other connecting rod is slidably connected to the slide rail, and a side surface of the slide rail is provided with a notch.

[0009] Preferably, a first electric push rod arranged opposite to the top of the workbench is fixedly connected, an L-shaped plate is fixedly connected to the top of the first electric push rod, and a vertical plate is fixedly connected to one end of the L-shaped plate.

[0010] Preferably, one end of the L-shaped plate is fixedly connected to an electric telescopic rod, one end of the electric telescopic rod is fixedly connected to a placement box, one end of the vertical plate is provided with two sliding grooves, one of which is slidably connected to a slider fixedly connected to one end of the placement box.

[0011] Preferably, a second electric push rod is fixedly connected in the other slide groove, a connecting column is fixedly connected between the sliding block and the second electric push rod, one end of the second electric push rod is fixedly connected to a U-shaped movable plate that fits with the bottom end of the placement box and the top end of the L-shaped plate, a hidden groove is opened at the bottom end of the U-shaped movable plate, a trapezoidal push plate is slidably connected in the hidden groove, and a spring is fixedly connected between the hidden groove and the trapezoidal push plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model is provided with a positioning component and a U-shaped movable plate, and the position of the U-shaped movable plate is limited by the U-shaped limit block and the U-shaped limit frame in the positioning component, so that the position of the chip resistor in the U-shaped movable plate is positioned, and there is no need to constantly adjust the position of the patch resistor on the circuit board, which saves time and labor while improving the efficiency of soldering the patch resistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a welding device for a chip resistor.

[0015] Figure 2 The utility model provides a schematic structural diagram of a positioning component in a welding device for a chip resistor.

[0016] Figure 3 The utility model provides a schematic structural diagram of an L-shaped plate, a placement box and a vertical plate in a welding device for a chip resistor.

[0017] Figure 4 The utility model discloses an assembly diagram of a placement box, a U-shaped moving plate and a trapezoidal push plate in a welding device for a chip resistor.

[0018] Figure 5 The utility model is a schematic diagram of the structure of a support block in a welding device for a chip resistor.

[0019] In the figure: 1. workbench; 2. support block; 201. baffle; 3. screw; 4. nut block; 401. handle; 5. pressure plate; 6. connecting rod; 7. slide rail; 8. first electric push rod; 9. L-shaped plate; 901. vertical plate; 902. electric telescopic rod; 10. slider; 1001. connecting column; 11. second electric push rod; 12. placement box; 13. U-shaped limit block; 1301. connecting block; 14. U-shaped limit frame; 1401. fixing rod; 15. U-shaped movable plate; 1501. trapezoidal push plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-5 A soldering device for a chip resistor comprises a workbench 1, a support block 2 is fixedly connected to the top of the workbench 1, a placement groove is provided on the top of the support block 2 (the placement groove is used to place a circuit board), a baffle 201 is fixedly connected in the placement groove (the baffle 201 and the support block 2 limit the position of the circuit board), a positioning component is arranged above the support block 2 (the positioning component positions the chip resistor, so that the position of the chip resistor does not need to be adjusted), the positioning component comprises a symmetrically arranged pressing plate 5 (the pressing plate 5 presses and fixes the circuit board), and one end of the pressing plate 5 is fixedly connected to a connecting rod 6. A plurality of U-shaped limit blocks 13 are arranged between the two pressure plates 5, and a connecting block 1301 is fixedly connected between adjacent U-shaped limit blocks 13, wherein two connecting blocks 1301 are fixedly connected to the two pressure plates 5 respectively, and a plurality of U-shaped limit frames 14 are arranged between the pressure plates 5 (the position of the chip resistor is limited by the U-shaped limit blocks 13 and the U-shaped limit frames 14, and the height of the U-shaped limit frames 14 is twice that of the U-shaped limit blocks 13), and a fixing rod 1401 is fixedly connected between adjacent U-shaped limit frames 14, wherein two fixing rods 1401 are fixedly connected to the two pressure plates 5 respectively.

[0022] Furthermore, an adjustment assembly is provided on one side of one of the connecting rods 6, and the adjustment assembly includes a screw rod 3 rotatably connected to the top of the workbench 1, and a nut block 4 is threadedly connected to the surface of the screw rod 3, one of the connecting rods 6 is fixedly connected to the surface of the nut block 4, and a handle 401 is fixedly connected to the surface of the screw 3 (the handle 401 is used to rotate the screw rod 3 and drive the nut block 4 and the positioning assembly to move downward, thereby facilitating the positioning of the chip resistor), a slide rail 7 is fixedly connected to the top of the workbench 1, and another connecting rod 6 is slidably connected to the slide rail 7 (the slide rail 7 restricts the nut block 4, so that the nut block 4 and the positioning assembly can move up and down when the screw rod 3 rotates), and a notch is provided on one side of the slide rail 7 (the notch facilitates the other connecting rod 6 to move out of the slide rail 7, so that the nut block 4 can drive the positioning assembly to rotate).

[0023] It should be noted that: a first electric push rod 8 which is relatively arranged is fixedly connected to the top of the workbench 1, an L-shaped plate 9 is fixedly connected to the top of the first electric push rod 8 (the initial position of the L-shaped plate 9 is on the same horizontal line as the pressure plate 5), one end of the L-shaped plate 9 is fixedly connected to a vertical plate 901, one end of the L-shaped plate 9 is fixedly connected to an electric telescopic rod 902, one end of the electric telescopic rod 902 is fixedly connected to a placement box 12 (the placement box 12 contains chip resistors), one end of the vertical plate 901 is provided with two slide grooves, one of which is slidably connected to a slider 10 fixedly connected to one end of the placement box 12.

[0024] It is worth noting that: a second electric push rod 11 is fixedly connected in another slide slot, a connecting column 1001 is fixedly connected between the slider 10 and the second electric push rod 11, and one end of the second electric push rod 11 is fixedly connected to a U-shaped moving plate 15 that fits the bottom end of the placement box 12 and the top end of the L-shaped plate 9 (the second electric push rod 11 pushes the U-shaped moving plate 15 to move, and pushes the chip resistor in the U-shaped moving plate 15 onto the circuit board);

[0025] A hidden groove is provided at the bottom end of the U-shaped movable plate 15, in which a trapezoidal push plate 1501 is slidably connected (the trapezoidal push plate 1501 pushes the chip resistor that falls from the U-shaped movable plate 15), and a spring is fixedly connected between the hidden groove and the trapezoidal push plate 1501.

[0026] A further advantage of adopting the above is that the above device does not need to constantly adjust the position of the chip resistor on the circuit board, which saves time and effort while improving the efficiency of soldering the chip resistor.

[0027] The utility model is used as follows: when it is necessary to solder the chip resistor to the circuit board, the staff first puts the circuit board into the placement slot, and contacts one end of the circuit board with the baffle 201, and then the staff tins the circuit board. When the tinning is completed, the staff puts the chip resistor into the placement box 12, and then the staff holds the handle 401 and rotates it. The rotation of the handle 401 drives the screw 3 to rotate, and the rotation of the screw 3 drives the nut block 4 to move down. The downward movement of the nut block 4 drives the pressure plate 5, the U-shaped limit block 13, the U-shaped limit frame 14 and the connecting rod 6 to move down, and the pressure plate 5 is moved down until it contacts the circuit board. At this time, the U-shaped limit block 13 and the U-shaped limit frame 14 are in contact with the surface of the circuit board;

[0028] Then the staff starts the second electric push rod 11, and the second electric push rod 11 pushes the U-shaped moving plate 15 to move. The U-shaped moving plate 15 moves and pushes the chip resistors that have fallen from the placement box 12 into the U-shaped moving plate 15 to move. When the U-shaped moving plate 15 moves into the U-shaped limit block 13 and contacts the inner side of the U-shaped limit block 13, it means that the chip resistors in the U-shaped moving plate 15 are now located at the correct position on the circuit board. At this time, the second electric push rod 11 drives the U-shaped moving plate 15 to reset (after the U-shaped moving plate 15 is reset, the chip resistors in the placement slots fall into the U-shaped moving plate 15), and the chip resistors remain on the circuit board. At the same time, the electric telescopic rod 902 pushes the placement box 12 to move, and then the second electric push rod 11 continues to push the U-shaped moving plate 15 and the chip resistors to move. The placement of the first row of chip resistors on the circuit board is as described above.

[0029] When the placement of the first row of chip resistors on the circuit board is completed, the staff controls the first electric push rod 8 to push the L-shaped plate 9 upward, and then the staff continues to control the second electric push rod 11 and the electric telescopic rod 902 to move. When the second electric push rod 11 pushes the U-shaped movable plate 15 to move onto the support block 2, due to the height difference between the L-shaped plate 9 and the support block 2 at this time, the chip resistors in the U-shaped movable plate 15 fall onto the baffle 201. At this time, the spring pushes the trapezoidal push plate 1501 to move out of the U-shaped movable plate 15. At this time, when the second electric push rod 11 drives the U-shaped movable plate 15 to move, the trapezoidal push plate 1501 pushes the chip resistor to move. When the U-shaped movable plate 15 moves into the U-shaped limit frame 14 and is detected with the inner side of the U-shaped limit frame 14, it indicates that the chip resistors pushed by the trapezoidal push plate 1501 are located at the correct position on the circuit board. The subsequent placement of the chip resistors on the second row of circuit boards is the same as the first row.

[0030] After all the chip resistors are placed at the correct positions on the circuit board, the staff drives the screw 3 to rotate through the handle 401, so that the nut block 4, U-shaped limit block 13, U-shaped limit frame 14 and connecting rod 6 move up. When they move up to the notch on the slide rail 7, the screw 3 drives the nut block 4, U-shaped limit block 13, U-shaped limit frame 14 and connecting rod 6 to rotate, so that the U-shaped limit block 13 and the U-shaped limit frame 14 rotate from the top of the support block 2 to the other side. Then the staff can solder the chip resistors on the circuit board to the circuit board. The above device does not need to constantly adjust the position of the chip resistors on the circuit board, which saves time and effort while improving the efficiency of soldering the chip resistors.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chip resistor welding device, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a support block (2), the top of the support block (2) is provided with a placement groove, a baffle (201) is fixedly connected in the placement groove, a positioning assembly is arranged above the support block (2), the positioning assembly comprises symmetrically arranged pressing plates (5), one end of the pressing plates (5) is fixedly connected to a connecting rod (6), a plurality of U-shaped limit blocks (13) are arranged between two pressing plates (5), a connecting block (1301) is fixedly connected between adjacent U-shaped limit blocks (13), wherein two connecting blocks (1301) are respectively fixedly connected to the two pressing plates (5), a plurality of U-shaped limit frames (14) are arranged between the pressing plates (5), a fixing rod (1401) is fixedly connected between adjacent U-shaped limit frames (14), wherein two fixing rods (1401) are respectively fixedly connected to the two pressing plates (5).

2. A chip resistor welding device according to claim 1, characterized in that: An adjustment assembly is provided on one side of one of the connecting rods (6), the adjustment assembly comprising a screw rod (3) rotatably connected to the top of the workbench (1), the surface of the screw rod (3) being threadedly connected to a nut block (4), one of the connecting rods (6) being fixedly connected to the surface of the nut block (4), and the surface of the screw rod (3) being fixedly connected to a handle (401).

3. A chip resistor welding device according to claim 2, characterized in that: The top of the workbench (1) is fixedly connected to a slide rail (7), the other connecting rod (6) is slidably connected to the slide rail (7), and a groove is provided on one side of the slide rail (7).

4. A chip resistor welding device according to claim 1, characterized in that: The top end of the workbench (1) is fixedly connected to a first electric push rod (8) arranged opposite to it, the top end of the first electric push rod (8) is fixedly connected to an L-shaped plate (9), and one end of the L-shaped plate (9) is fixedly connected to a vertical plate (901).

5. A chip resistor welding device according to claim 4, characterized in that: One end of the L-shaped plate (9) is fixedly connected to an electric telescopic rod (902), one end of the electric telescopic rod (902) is fixedly connected to a placement box (12), one end of the vertical plate (901) is provided with two sliding grooves, one of which is slidably connected to a slider (10) fixedly connected to one end of the placement box (12).

6. A chip resistor welding device according to claim 5, characterized in that: A second electric push rod (11) is fixedly connected in the other slide groove, a connecting column (1001) is fixedly connected between the slider (10) and the second electric push rod (11), one end of the second electric push rod (11) is fixedly connected to a U-shaped movable plate (15) that fits the bottom end of the placement box (12) and the top end of the L-shaped plate (9), a hidden groove is opened at the bottom end of the U-shaped movable plate (15), a trapezoidal push plate (1501) is slidably connected in the hidden groove, and a spring is fixedly connected between the hidden groove and the trapezoidal push plate (1501).

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