Terminal riveting pressure adjusting device for patch resistor

Abstract

The utility model discloses a kind of terminal riveting pressure regulating devices of patch type resistance, it is related to patch type resistance production technical field, including base, the upper surface of the base is fixedly connected with multiple pressure sensors, the upper surface of each pressure sensor is placed with patch type resistance body, the upper surface of the base is fixedly connected with U-shaped frame, the lower surface of the U-shaped frame is slidably provided with moving plate, adjusting mechanism is provided between the moving plate and U-shaped frame, the moving plate moves by adjusting mechanism, the inside of the U-shaped frame is symmetrically slidably provided with two baffle, the both sides of the U-shaped frame are all set with sliding slot, the inside of two sliding slot is all provided with fixed mechanism.The utility model is precisely driven cooperation pressure sensor by motor, gear and screw rod, realize riveting pressure real-time closed-loop control, to accurately adjust pressure, compared with traditional cylinder driven rough air pressure regulation precision improvement.

Description

Technical Field

[0001] This utility model relates to the field of surface mount resistor manufacturing technology, specifically to a device for adjusting the riveting pressure of the terminals in a surface mount resistor. Background Technology

[0002] In the field of electronic component manufacturing, surface mount resistors are widely used in electronic products such as smartphones, computers, and IoT devices due to their small size and high integration. Among them, the riveting of the middle terminal is the core process in the production of surface mount resistors.

[0003] In surface mount resistors, the terminals need to be riveted together with precise pressure to press and fix them to the resistor body. If the riveting pressure is not right, it can lead to poor contact at the terminals or even breakage of the resistor body, directly affecting the product yield and the stability of subsequent circuits. However, existing riveting equipment has low pressure adjustment precision and relies on manual experience. Most equipment uses a cylinder to drive the pressing block for riveting. The cylinder stroke is controlled by a manual valve, and the pressure adjustment can only roughly adjust the air pressure. As a result, it is difficult to adjust the pressure on the surface mount resistor terminals during riveting. Furthermore, using a cylinder to drive the pressing block can cause excessive instantaneous pressure without buffer space, which can damage the resistor. Utility Model Content

[0004] In view of the problems existing in the terminal riveting device of the above-mentioned surface mount resistor, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a device for adjusting the riveting pressure of the terminals in a surface mount resistor. This device solves the problem that existing surface mount resistor terminals are usually riveted and pressed using a cylinder-driven pressing block. However, the stroke of the cylinder is difficult to control, which makes it difficult to adjust the pressure on the surface mount resistor terminals during riveting. Furthermore, using a cylinder-driven pressing block can lead to excessive instantaneous pressure on the pressing block without buffer space, resulting in resistor damage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A surface mount resistor terminal riveting pressure regulating device includes a base. Multiple pressure sensors are fixedly connected to the upper surface of the base. A surface mount resistor body is placed on the upper surface of each pressure sensor. A U-shaped frame is fixedly connected to the upper surface of the base. A movable plate is slidably disposed on the lower surface of the U-shaped frame. An adjusting mechanism is provided between the movable plate and the U-shaped frame. The movable plate moves via the adjusting mechanism. Two baffles are symmetrically slidably disposed on the inner side of the U-shaped frame. Slide grooves are formed on both sides of the U-shaped frame. Fixing mechanisms are provided inside the two slide grooves. The two baffles are fixed by corresponding fixing mechanisms. A pressing block is slidably disposed on the lower surface of the movable plate. A cavity is formed inside the pressing block. A piston is slidably disposed inside the cavity. Connecting rods are fixedly connected to the upper surface of the pistons. The upper ends of the two connecting rods penetrate the upper surface of the cavity and are fixedly connected to the lower surface of the movable plate.

[0007] Preferably, the adjusting mechanism includes two sleeves, two lead screws, a motor, a first gear, and a second gear. One side of the U-shaped frame has a through hole. The two sleeves are respectively connected to the interior of the corresponding through holes via rotating rods. The inner walls of the two sleeves each have a first internal thread hole. The two lead screws are respectively threaded into the interior of the corresponding first internal thread hole. The motor is fixedly sleeved on one side of the U-shaped frame, and the output end of the motor passes through one side of the U-shaped frame. The first gear is fixedly sleeved on the output end of the motor. The two second gears are respectively fixedly sleeved on the outer surface of the corresponding sleeves and mesh with the first gear.

[0008] Preferably, the fixing mechanism includes two fixing blocks, multiple first trapezoidal blocks, two second trapezoidal blocks, multiple T-shaped blocks, two screws, and two knobs. The two fixing blocks are slidably disposed inside corresponding slotted holes. Each of the two fixing blocks has a square hole on the side near the slotted hole. Each first trapezoidal block is slidably disposed inside the corresponding square hole. Each first trapezoidal block has a T-shaped groove on its inclined surface. Each T-shaped block is slidably disposed inside the corresponding T-shaped groove. Each second trapezoidal block is fixedly connected between two corresponding T-shaped blocks. Each of the two fixing blocks has a second internal threaded hole on the side away from the moving plate. The two screws are threaded into the corresponding second internal threaded holes and rotatably connected to one side of the corresponding second trapezoidal block. The two knobs are fixedly connected to one side of the corresponding screws. The two baffles are fixedly connected to one side of the corresponding fixing blocks.

[0009] Preferably, the upper surface of the piston is provided with multiple micropores.

[0010] Preferably, both connecting rods have springs fitted onto their walls.

[0011] Preferably, the inner walls of the two grooves are symmetrically provided with multiple fixing grooves, and each fixing groove is matched with the corresponding second trapezoidal block.

[0012] Preferably, the size of the first gear is smaller than the size of the two second gears.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model achieves real-time closed-loop control of riveting pressure through the precise transmission of a motor, gears, and lead screw in conjunction with a pressure sensor, thereby accurately adjusting the pressure and improving the accuracy of pressure adjustment compared to the coarse air pressure regulation of traditional cylinder-driven systems.

[0014] 2. In this utility model, the piston inside the cavity of the pressing block forms a double buffer with the spring of the connecting rod through the microporous damping design, which can absorb more instantaneous impact force, thereby preventing excessive instantaneous pressure and greatly reducing the breakage rate of the resistor body. It is especially suitable for the production of thin, high-precision surface mount resistors. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 For the present utility model Figure 1 Partial 3D view of the U-shaped frame; Figure 3 For the present utility model Figure 1 A sectional perspective view of the central pressing block; Figure 4 For the present utility model Figure 1 A sectional perspective view of the central fixed block; Figure 5 For the present utility model Figure 4 A three-dimensional diagram showing the connection between the first trapezoidal block, the second trapezoidal block, and the T-shaped block.

[0017] Explanation of reference numerals in the attached figures: 1. Base, 2. Pressure sensor, 3. U-shaped frame, 4. Moving plate, 5. Baffle, 6. Pressing block, 7. Piston, 8. Connecting rod, 9. Sleeve, 10. Lead screw, 11. Motor, 12. First gear, 13. Second gear, 14. Fixing block, 15. First trapezoidal block, 16. Second trapezoidal block, 17. T-shaped block, 18. Screw, 19. Knob, 20. Spring, 21. Surface mount resistor body. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] This utility model discloses a device for adjusting the riveting pressure of the middle terminal of a surface mount resistor.

[0020] This utility model provides, for example Figure 1-5 The device for adjusting the riveting pressure of a surface mount resistor terminal, as shown, includes a base 1. Multiple pressure sensors 2 are fixedly connected to the upper surface of the base 1. A surface mount resistor body 21 is placed on the upper surface of each pressure sensor 2. A U-shaped frame 3 is fixedly connected to the upper surface of the base 1. A movable plate 4 is slidably arranged on the lower surface of the U-shaped frame 3. An adjustment mechanism is provided between the movable plate 4 and the U-shaped frame 3. The movable plate 4 moves through the adjustment mechanism. Two baffles 5 are symmetrically slidably arranged on the inner side of the U-shaped frame 3. Slide grooves are opened on both sides of the U-shaped frame 3. Fixing mechanisms are provided inside the two slide grooves. The two baffles 5 are fixed by corresponding fixing mechanisms. A pressing block 6 is slidably arranged on the lower surface of the movable plate 4. A cavity is opened inside the pressing block 6. A piston 7 is slidably arranged inside the cavity. Connecting rods 8 are fixedly connected to the upper surface of the pistons 7. The upper ends of the two connecting rods 8 penetrate the upper surface of the cavity and are fixedly connected to the lower surface of the movable plate 4.

[0021] The base 1 provides support for the device, the pressure sensor 2 monitors the riveting pressure in real time, the adjustment mechanism controls the lifting and lowering of the pressing block 6 to achieve pressure adjustment, and the baffle 5 limits the stroke of the moving plate 4, thereby allowing the pressure to be adjusted. The buffer component avoids excessive instantaneous pressure, and together solves the problems of "difficult pressure control and easy damage to resistors" in traditional cylinder drive.

[0022] like Figure 1-2 As shown, the adjustment mechanism includes two sleeves 9, two lead screws 10, a motor 11, a first gear 12, and a second gear 13. A through hole is provided on one side of the U-shaped frame 3. The two sleeves 9 are connected to the corresponding through holes via rotating rods. A first internal thread hole is provided on the inner wall of each sleeve 9. The two lead screws 10 are threaded into the corresponding first internal thread holes. The motor 11 is fixedly sleeved on one side of the U-shaped frame 3, and its output end passes through one side of the U-shaped frame 3. The first gear 12 is fixedly sleeved on the output end of the motor 11. The two second gears 13 are fixedly sleeved on the outer surface of the corresponding sleeves 9 and mesh with the first gear 12. The size of the first gear 12 is smaller than the size of the two second gears 13.

[0023] After the motor 11 starts, its output drives the first gear 12 to rotate. Since the first gear 12 meshes with the two second gears 13, the power is synchronously transmitted to the two sleeves 9, causing the sleeves to rotate stably in the through hole of the U-shaped frame 3. The first internal thread on the inner wall of the sleeve 9 cooperates with the lead screw 10. When the sleeve rotates, it drives the lead screw 10 to move up and down along the axial direction, thereby pushing the moving plate 4 to slide along the lower surface of the U-shaped frame 3. The pressure sensor 2 on the base 1 collects the pressure data applied by the pressing block 6 to the chip resistor body 21 in real time and feeds the data back to the operating system. At this time, the operator observes the pressure data. If the actual pressure is less than the preset value, the motor 11 is controlled to continue driving the moving plate to descend, increasing the pressure. If the actual pressure exceeds the preset value, the motor is controlled to reverse, and the moving plate rises to reduce the pressure. Here, the size of the first gear 12 is smaller than the size of the two second gears 13, which can achieve the effect of deceleration to prevent the moving plate 4 from moving too fast.

[0024] like Figure 1 and Figure 3-5 As shown, the fixing mechanism includes two fixing blocks 14, multiple first trapezoidal blocks 15, two second trapezoidal blocks 16, multiple T-shaped blocks 17, two screws 18, and two knobs 19. The two fixing blocks 14 are slidably disposed inside corresponding slotted holes. Each fixing block 14 has a square hole on its side near the slotted hole. Each first trapezoidal block 15 is slidably disposed inside its corresponding square hole. Each first trapezoidal block 15 has a T-shaped groove on its inclined surface. Each T-shaped block 17 is slidably disposed inside its corresponding T-shaped groove. The two second trapezoidal blocks... 16 are fixedly connected between the two corresponding T-shaped blocks 17. The two fixed blocks 14 are provided with a second internal thread hole on the side away from the moving plate 4. The two screws 18 are respectively threaded into the inside of the corresponding second internal thread hole and are respectively rotatably connected to one side of the corresponding second trapezoidal block 16. The two knobs 19 are respectively fixedly connected to one side of the corresponding screw 18. The two baffles 5 are respectively fixedly connected to one side of the corresponding fixed block 14. The inner walls of the two slides are symmetrically provided with multiple fixing grooves, and each fixing groove is matched with the corresponding second trapezoidal block 16.

[0025] After the first surface mount resistor is riveted, move the two baffles 5 and make them fit against the lower surface of the moving plate 4. Then turn the knob 19 to drive the screw 18 to rotate in the second internal thread hole of the fixing block 14. The screw pushes the second trapezoidal block 16 to move. The second trapezoidal block presses the first trapezoidal block 15 through the T-shaped block 17, so that the first trapezoidal block is embedded in the fixing groove of the inner wall of the slide, realizing the rigid fixation of the baffle. This allows the stroke of the moving plate 4 to be fixed during subsequent work, which facilitates the riveting of subsequent resistors.

[0026] like Figure 1 and Figure 3-4As shown, the upper surfaces of the two pistons 7 are provided with multiple micro-holes, and the walls of the two connecting rods 8 are fitted with springs 20.

[0027] The piston 7 inside the cavity of the pressing block 6 is in a sealed sliding fit with the cavity. When the moving plate 4 drives the connecting rod 8 to press down, the piston 7 squeezes the air in the cavity. The air is slowly discharged through the micropores on the upper surface of the piston, generating a damping force to slow down the pressing speed of the pressing block and prevent the resistor body 21 from breaking due to a sudden increase in pressure. The spring 20 on the wall of the connecting rod 8 is compressed synchronously when the moving plate presses down. The elastic potential energy of the spring can push the pressing block 6 to reset when the pressure is released, preventing the pressing block from jamming. At the same time, the flexibility of the spring can further absorb some of the instantaneous impact force, assisting the piston to achieve double buffering and ensuring a smooth and impact-free riveting process.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for adjusting the riveting pressure of a surface mount resistor terminal, comprising a base (1), characterized in that, Multiple pressure sensors (2) are fixedly connected to the upper surface of the base (1). A surface mount resistor (21) is placed on the upper surface of each pressure sensor (2). A U-shaped frame (3) is fixedly connected to the upper surface of the base (1). A movable plate (4) is slidably arranged on the lower surface of the U-shaped frame (3). An adjustment mechanism is provided between the movable plate (4) and the U-shaped frame (3). The movable plate (4) moves through the adjustment mechanism. Two baffles (5) are symmetrically slidably arranged on the inner side of the U-shaped frame (3). The frame (3) has sliding grooves on both sides, and a fixing mechanism is provided inside the two sliding grooves. The two baffles (5) are fixed by the corresponding fixing mechanisms. A pressing block (6) is slidably provided on the lower surface of the moving plate (4). A cavity is provided inside the pressing block (6). A piston (7) is slidably provided inside the cavity. A connecting rod (8) is fixedly connected to the upper surface of the piston (7). The upper ends of the two connecting rods (8) penetrate the upper surface of the cavity and are fixedly connected to the lower surface of the moving plate (4).

2. The device for adjusting the riveting pressure of the mid-terminal of a surface-mount resistor according to claim 1, characterized in that, The adjustment mechanism includes two sleeves (9), two lead screws (10), a motor (11), a first gear (12), and a second gear (13). One side of the U-shaped frame (3) is provided with a through hole. The two sleeves (9) are respectively connected to the inside of the corresponding through hole by rotating rods. The inner walls of the two sleeves (9) are provided with a first internal thread hole. The two lead screws (10) are respectively threaded into the inside of the corresponding first internal thread hole. The motor (11) is fixedly sleeved on one side of the U-shaped frame (3). The output end of the motor (11) passes through one side of the U-shaped frame (3). The first gear (12) is fixedly sleeved on the output end of the motor (11). The two second gears (13) are respectively fixedly sleeved on the outer surface of the corresponding sleeves (9) and are both meshed with the first gear (12).

3. The device for adjusting the riveting pressure of the mid-terminal of a surface-mount resistor according to claim 1, characterized in that, The fixing mechanism includes two fixing blocks (14), multiple first trapezoidal blocks (15), two second trapezoidal blocks (16), multiple T-shaped blocks (17), two screws (18), and two knobs (19). The two fixing blocks (14) are slidably disposed inside the corresponding slots. Each of the two fixing blocks (14) has a square hole on the side near the slot. Each first trapezoidal block (15) is slidably disposed inside the corresponding square hole. Each first trapezoidal block (15) has a T-shaped groove on its inclined surface. Each T-shaped block (17) has a T-shaped groove on its inclined surface. The slide is set inside the corresponding T-shaped groove. Each second trapezoidal block (16) is fixedly connected between the two corresponding T-shaped blocks (17). The two fixed blocks (14) are provided with second internal thread holes on the side away from the moving plate (4). The two screws (18) are threaded into the inside of the corresponding second internal thread holes and are rotatably connected to the side of the corresponding second trapezoidal block (16). The two knobs (19) are fixedly connected to the side of the corresponding screws (18). The two baffles (5) are fixedly connected to the side of the corresponding fixed blocks (14).

4. The device for adjusting the riveting pressure of the surface mount resistor terminals according to claim 1, characterized in that, The upper surface of the piston (7) is provided with multiple micropores.

5. The device for adjusting the riveting pressure of the mid-terminal of a surface-mount resistor according to claim 1, characterized in that, Both connecting rods (8) have springs (20) sleeved on their walls.

6. The device for adjusting the riveting pressure of the mid-terminal of a surface-mount resistor according to claim 1, characterized in that, The inner walls of both grooves are symmetrically provided with multiple fixing grooves, and each fixing groove is matched with the corresponding second trapezoidal block (16).

7. The device for adjusting the riveting pressure of the mid-terminal of a surface-mount resistor according to claim 2, characterized in that, The size of the first gear (12) is smaller than the size of the two second gears (13).

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