Pin forming equipment for thermal pressure-sensitive resistor

Abstract

The utility model relates to the technical field of semiconductor production, in particular to a hot piezoresistor pin forming device which comprises a workbench, a servo motor, a transmission structure and a stamping mechanism, the servo motor is fixedly installed at the upper end of the workbench, one end of a main shaft of the servo motor is fixedly connected with the transmission structure, and one side of the transmission structure is fixedly connected with the stamping mechanism. A die holder assembly is arranged on the inner side of the workbench, a die core is fixedly connected to the inner side of the die holder assembly through bolts, the die holder assembly comprises a die frame, a pressing plate mechanism is fixedly connected to one side of the die frame, a positioning mechanism is installed on the inner side of the die frame, the die frame comprises a fixed die, and a fixed telescopic rod is fixedly connected to the outer side of the fixed die. When the pin expanding device is used for expanding the pin of the thermo-sensitive resistor, the pin is tightly clamped, so that the problem that a welding point between the pin and a resistor head is loosened due to pulling force is solved, and stable connection between the thermo-sensitive resistor and a circuit is ensured.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor manufacturing technology, specifically to a thermocouple pin forming device. Background Technology

[0002] The pins of the thermocouple are the key part for connecting the thermocouple to the external circuit. They are fixed to the circuit board by soldering or other means to realize the circuit connection. This can ensure the stability of the thermocouple on the circuit board and prevent it from falling off due to vibration or impact. When the voltage in the circuit exceeds the set value, the thermocouple will also discharge the excess voltage through its pins, thereby avoiding damage to other components in the circuit.

[0003] The thermocouple lead forming equipment is mainly used to form the leads during the production of thermocouples. By precisely controlling the forming mold and processing parameters, the equipment can process the leads of the thermocouple into shapes and sizes that meet the design requirements. This helps to ensure a good connection between the leads and the circuit board and improves the reliability and stability of the component.

[0004] When the lead forming equipment for thermocouples expands the leads, the deformation of the leads exerts a pulling force on the clamped resistor head. This pulling force can loosen the solder joint between the resistor head and the lead. In subsequent use, the loose solder joint can lead to unstable connection between the thermocouple and the circuit, resulting in signal transmission interruption, resistance value drift, and other phenomena. Therefore, a lead forming equipment for thermocouples is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a thermocouple pin forming device to solve the problem that when the pin deforms, it will exert a pulling force on the clamped resistor head. This pulling force will cause the solder joint between the resistor head and the pin to loosen, which will lead to unstable connection between the thermocouple and the circuit during subsequent use.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A thermistor pin forming device includes a worktable, a servo motor, a transmission structure, and a stamping mechanism. The servo motor is fixedly mounted on the upper end of the worktable. One end of the servo motor's spindle is fixedly connected to the transmission structure. The stamping mechanism is fixedly connected to one side of the transmission structure. A mold base assembly is disposed inside the worktable. A mold core is fixedly connected to the inner side of the mold base assembly by bolts. The mold base assembly includes a mold frame. A pressure plate mechanism is fixedly connected to one side of the mold frame. A positioning mechanism is installed inside the mold frame. The mold frame encloses a fixed mold. A fixed telescopic rod is fixedly connected to the outer side of the fixed mold. A curved groove is formed on one side of the fixed mold. A spring is fixedly connected to the upper end of the fixed mold by screws. A perforated plate is fixedly connected to the inner side of the fixed mold. The perforated plate has a threaded hole on its inner side. The pressure plate mechanism includes a strip plate. A fixed column is slidably connected to the inner side of the strip plate. A return spring is fixedly connected to one side of the strip plate. The positioning mechanism includes a threaded cap. A threaded tube is spirally connected to the inner side of the threaded cap. A limit ring is fixedly connected to the upper end of the threaded tube. A gasket is spirally connected to the outer side of the threaded tube. A clamping mechanism is provided at the upper end of the limit ring. The clamping mechanism includes a rubber pad. A guide groove is provided on the inner side of the rubber pad. A rubber tube is bonded and fixed to the lower end of the rubber pad. A tube-to-tube through hole is provided on the inner side of the rubber tube. An airbag band is provided on the inner side of the rubber tube. An airbag ball is fixedly connected to the outer side of the airbag band.

[0008] As a further optimization of this utility model, the outer side of the mold frame is fitted with the inner side of the worktable, the inner side of the mold frame is fitted with the outer side of the mold core, the pressure plate mechanism is located on the side of the mold frame near the stamping mechanism, and there are two positioning mechanisms, which are symmetrically distributed.

[0009] As a further optimization of this utility model, the included angle between the fixed telescopic rod and the fixed mold is 90°, there are two fixed telescopic rods, which are symmetrically distributed, there are several curved grooves, which are parallel to each other, and the spring is located above the curved groove.

[0010] As a further optimization of this utility model, the included angle between the positioning mechanism and the perforated plate is 90°, a threaded tube is spirally connected to the inner side of the threaded hole, a plurality of threaded holes are provided, and the positions of the threaded holes correspond one-to-one with the positions of the curved grooves.

[0011] As a further optimization of this utility model, the upper surface of the strip plate and the lower surface of the spring are on the same horizontal plane, the lower surface of the strip plate and the upper surface of the perforated plate are on the same horizontal plane, the central axis of the fixing column and the central axis of the return spring are on the same straight line, one end of the return spring is fixedly connected to the fixing column, the included angle between the return spring and the strip plate is 90°, and one end of the fixing column is fixedly connected to the fixing mold.

[0012] As a further optimization of this utility model, the inner side of the bottom end of the threaded cap is arc-shaped, several gaskets are provided, the gaskets are located below the perforated plate, the bottom end face of the limiting ring is in contact with the upper end face of the perforated plate, and the outer side of the clamping mechanism is in contact with the inner side of the curved groove.

[0013] As a further optimization of this utility model, the following features are provided: the projection of the rubber pad in the vertical direction is annular; a limit ring is bonded and fixed to the lower end of the rubber tube; the diameter of the lower end of the guide groove is half that of the upper end; several through holes are provided between the tubes; the through holes are distributed in an annular pattern on the inner side of the rubber tube; the height of the airbag belt is equal to the height of the rubber tube; the outer side of the airbag ball is attached to the inner side of the through hole between the tubes; and the number of airbag balls corresponds to the number of through holes between the tubes.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the device uses a mold frame structure, a pressure plate mechanism, and a clamping mechanism to tightly clamp the leads of the thermocouple during lead expansion. This avoids the problem of loosening of the solder joint between the lead and the resistor head due to pulling force, ensuring a stable connection between the thermocouple and the circuit. At the same time, the device reduces stress concentration caused by bending, effectively reducing the risk of lead breakage and thus improving the durability of the leads. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the mold base assembly structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the mold frame structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the pressure plate mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the positioning mechanism of this utility model;

[0021] Figure 6 This is an exploded view of the positioning mechanism of this utility model;

[0022] Figure 7 This is a schematic diagram of the exploded structure of the clamping mechanism of this utility model.

[0023] In the diagram: 1. Worktable; 2. Servo motor; 3. Transmission structure; 4. Stamping mechanism;

[0024] 5. Mold base assembly;

[0025] 51. Mold frame; 511. Fixed mold; 512. Fixed telescopic rod; 513. Curved groove; 514. Spring; 515. Perforated plate; 516. Threaded hole;

[0026] 52. Pressure plate mechanism; 521. Strip plate; 522. Fixed column; 523. Return spring;

[0027] 53. Positioning mechanism; 531. Threaded cap; 532. Threaded tube; 533. Limiting ring; 534. Gasket; 535. Clamping mechanism; 5351. Rubber pad; 5352. Guide groove; 5353. Rubber tube; 5354. Through hole between tubes; 5355. Airbag belt; 5356. Airbag bulb;

[0028] 6. Mold core. Detailed Implementation

[0029] 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.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] Please see Figure 1-7 This utility model provides a technical solution:

[0032] A thermocouple pin forming device includes a worktable 1, a servo motor 2, a transmission structure 3, and a stamping mechanism 4. The servo motor 2 is fixedly mounted on the upper end of the worktable 1. One end of the servo motor 2's spindle is fixedly connected to the transmission structure 3. The stamping mechanism 4 is fixedly connected to one side of the transmission structure 3. A mold base assembly 5 is provided inside the worktable 1. A mold core 6 is fixedly connected to the inner side of the mold base assembly 5 by bolts. The mold base assembly 5 includes a mold frame 51. A pressure plate mechanism 52 is fixedly connected to one side of the mold frame 51. A positioning mechanism 53 is installed inside the mold frame 51. The mold frame 51 encloses a fixed mold 511. A fixed telescopic rod 512 is fixedly connected to the outer side of the fixed mold 511. A curved groove 513 is opened on one side of the fixed mold 511. A spring 514 is fixedly connected to the upper end of the fixed mold 511 by screws. A perforated plate 515 is fixedly connected to the inner side of the fixed mold 511. The inner side is provided with a threaded hole 516. The pressure plate mechanism 52 includes a strip 521. A fixed column 522 is slidably connected to the inner side of the strip 521. A return spring 523 is fixedly connected to one side of the strip 521. The positioning mechanism 53 includes a threaded cap 531. A threaded tube 532 is spirally connected to the inner side of the threaded cap 531. A limit ring 533 is fixedly connected to the upper end of the threaded tube 532. A gasket 534 is spirally connected to the outer side of the threaded tube 532. A clamping mechanism 535 is provided at the upper end of the limit ring 533. The clamping mechanism 535 includes a rubber pad 5351. A guide groove 5352 is provided on the inner side of the rubber pad 5351. A rubber tube 5353 is glued and fixed to the lower end of the rubber pad 5351. A tube through hole 5354 is provided on the inner side of the rubber tube 5353. An airbag belt 5355 is provided on the inner side of the rubber tube 5353. An airbag ball 5356 is fixedly connected to the outer side of the airbag belt 5355.

[0033] As a further implementation of this solution, the outer side of the mold frame 51 is attached to the inner side of the worktable 1, and the inner side of the mold frame 51 is attached to the outer side of the mold core 6. The pressure plate mechanism 52 is set on the side of the mold frame 51 near the stamping mechanism 4. There are two positioning mechanisms 53, which are symmetrically distributed. The angle between the fixed telescopic rod 512 and the fixed mold 511 is 90°. There are two fixed telescopic rods 512, which are symmetrically distributed. There are several curved grooves 513, which are parallel to each other. The spring 514 is set above the curved grooves 513. This arrangement enables the positioning mechanism 53 to position the pins of the thermocouple, and at the same time, the spring 514 can limit the resistor head of the thermocouple to prevent the resistor head from moving downward, which would cause errors in the pin bending accuracy.

[0034] As a further implementation of this solution, the included angle between the positioning mechanism 53 and the perforated plate 515 is 90°. The threaded tube 532 is spirally connected to the inside of the threaded hole 516. There are several threaded holes 516, and the positions of the threaded holes 516 correspond one-to-one with the positions of the curved grooves 513. This arrangement allows the perforated plate 515 to fix and support the threaded tube 532 while strengthening the connection between the two to a certain extent. By installing the threaded tube 532 in different threaded holes 516, the position of the threaded tube 532 can be quickly adjusted.

[0035] As a further implementation of this solution, the upper end face of the strip 521 and the bottom end face of the spring 514 are on the same horizontal plane, the bottom end face of the strip 521 and the upper end face of the perforated plate 515 are on the same horizontal plane, the central axis of the fixing post 522 and the central axis of the return spring 523 are on the same straight line, one end of the return spring 523 is fixedly connected to the fixing post 522, the included angle between the return spring 523 and the strip 521 is 90°, and one end of the fixing post 522 is fixedly connected to the fixing mold 511. This arrangement can restrict the movement direction of the strip 521 by the fixing post 522, and at the same time prevent the strip 521 from colliding with other components and causing damage. The return spring 523 can make the strip 521 return to its original position quickly without being squeezed.

[0036] As a further implementation of this solution, the inner side of the bottom end of the threaded cap 531 is arc-shaped, and several gaskets 534 are provided. The gaskets 534 are located below the perforated plate 515. The bottom end face of the limiting ring 533 is in contact with the upper end face of the perforated plate 515. The outer side of the clamping mechanism 535 is in contact with the inner side of the curved groove 513. The arc-shaped design of the inner side of the bottom end of the threaded cap 531 reduces stress concentration caused by bending to a certain extent, thereby reducing the risk of pin breakage.

[0037] As a further implementation of this solution, the projection of the rubber pad 5351 in the vertical direction is annular. The lower end of the rubber tube 5353 is bonded and fixed with a limit ring 533. The diameter of the lower end of the guide groove 5352 is half that of the upper end. Several through holes 5354 are provided between the tubes, and the through holes 5354 are distributed in a ring on the inner side of the rubber tube 5353. The height of the airbag band 5355 is equal to the height of the rubber tube 5353. The outer side of the airbag ball 5356 is attached to the inner side of the through hole 5354. The number of airbag balls 5356 corresponds to the number of through holes 5354. This arrangement allows the air inside the airbag ball 5356 to be squeezed into the airbag band 5355, so that the airbag band 5355 can clamp the internal through pins and prevent the welding point between the resistor head and the pin from loosening due to tension.

[0038] Working process: During use, the relative position between the two positioning mechanisms 53 is adjusted according to the shape of the thermocouple and the gap between the pins. The threaded tube 532 is screwed into the threaded hole 516 inside the perforated plate 515. Then, the shim 534 is rotated and installed from the lower end of the threaded tube 532. The number of shims 534 is appropriately increased or decreased according to the required bending height of the pins, which allows for fine adjustment according to the pin length. Finally, the threaded cap 531 is screwed on. Install the threaded cap 531 from the lower end of the threaded tube 532, ensuring that the upper end of the threaded cap 531 fits against the gasket 534 after installation. Simultaneously, the upper end of the gasket 534 fits against the lower end of the perforated plate 515, and the lower end of the limiting ring 533 fits against the upper end of the perforated plate 515. This forms a fixed connection between the mold frame 51 and the positioning mechanism 53. Next, insert the leads of the thermocouple to be processed into the guide groove 5352. The shape of the guide groove 5352 effectively guides the insertion of the leads, allowing them to pass through the clamping mechanism. 535, the limiting ring 533, and the threaded tube 532 then pass through the bottom end of the threaded cap 531. At this time, the servo motor 2 is started. The main shaft of the servo motor 2 drives the transmission structure 3 to squeeze the stamping mechanism 4, causing the stamping mechanism 4 to move. After the stamping mechanism 4 moves a certain distance, it will push the strip 521 to move, so that one side of the strip 521 squeezes the clamping mechanism 535. When the clamping mechanism 535 is squeezed, the air inside the airbag ball 5356 will be squeezed into the airbag belt 5355, so that the airbag belt 5355 squeezes the inside. The through-pin acts as a clamp to prevent the solder joint between the resistor head and the pin from loosening due to tension. The rubber pad 5351 and the spring 514 can limit the resistor head of the thermocouple to prevent it from moving downwards and causing errors in the pin bending accuracy. At the same time, the pin that protrudes from the lower end of the threaded cap 531 will be bent by the stamping mechanism 4 and the die core 6. Since the inner side of the bottom of the threaded cap 531 is arc-shaped, this can reduce the stress concentration caused by bending to a certain extent, thereby reducing the risk of pin breakage.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot pressure sensitive resistance pin forming equipment, comprising a workbench (1), a servo motor (2), a transmission structure (3) and a stamping mechanism (4), characterized in that: The workbench (1) upper end is fixedly installed with a servo motor (2), one end of the servo motor (2) main shaft is fixedly connected with a transmission structure (3), one side of the transmission structure (3) is fixedly connected with a stamping mechanism (4), the workbench (1) inner side is provided with a die holder assembly (5), the die holder assembly (5) inner side is fixedly connected with a die core (6) through bolts; The die holder assembly (5) includes a die frame (51), the die frame (51) one side is fixedly connected with a pressing plate mechanism (52), the die frame (51) inner side is installed with a positioning mechanism (53); The die frame (51) bag fixed die (511), the fixed die (511) outer side is fixedly connected with a fixed telescopic rod (512), one side of the fixed die (511) is provided with a curved groove (513), the fixed die (511) upper end is fixedly connected with a reed (514) through screws, the fixed die (511) inner side is fixedly connected with a hole plate (515), the hole plate (515) inner side is provided with a threaded hole (516); The pressing plate mechanism (52) includes a strip plate (521), the strip plate (521) inner side is slidably connected with a fixed column (522), one side of the strip plate (521) is fixedly connected with a return spring (523); The positioning mechanism (53) includes a threaded cap (531), the threaded cap (531) inner side is helically connected with a threaded tube (532), the threaded tube (532) upper end is fixedly connected with a limit ring (533), the threaded tube (532) outer side is helically connected with a gasket (534), the limit ring (533) upper end is provided with a clamping mechanism (535); The clamping mechanism (535) includes a rubber pad (5351), the rubber pad (5351) inner side is provided with a guide groove (5352), the rubber pad (5351) lower end is adhesively fixed with a rubber tube (5353), the rubber tube (5353) inner side is provided with a tube interstitial hole (5354), the rubber tube (5353) inner side is provided with an air bag belt (5355), the air bag belt (5355) outer side is fixedly connected with an air bag ball (5356).

2. The hot press sensitive resistance pin forming apparatus according to claim 1, wherein: The die frame (51) outer side is attached to the workbench (1) inner side, the die frame (51) inner side is attached to the die core (6) outer side, the pressing plate mechanism (52) is arranged on one side of the die frame (51) close to the stamping mechanism (4), the positioning mechanism (53) is provided with two, two positioning mechanisms (53) are symmetrically distributed.

3. The hot resistance lead forming apparatus of claim 1 wherein: The included angle between the fixed telescopic rod (512) and the fixed die (511) is 90°, the fixed telescopic rod (512) is provided with two, two fixed telescopic rods (512) are symmetrically distributed, the curved groove (513) is provided with a plurality of, the curved grooves (513) are parallel to each other, the reed (514) is arranged above the curved groove (513).

4. The hot resistance lead forming apparatus of claim 1 wherein: The included angle between the positioning mechanism (53) and the hole plate (515) is 90°, the inside of the threaded hole (516) is spirally connected with a threaded pipe (532), the threaded hole (516) is provided with a plurality of threaded holes, and the positions of the threaded holes (516) correspond to the positions of the curved grooves (513) one by one.

5. The hot resistance lead forming apparatus of claim 1 wherein: The upper end surface of the strip plate (521) and the bottom end surface of the spring sheet (514) are on the same horizontal plane, the bottom end surface of the strip plate (521) and the upper end surface of the hole plate (515) are on the same horizontal plane, the central axis of the fixed column (522) and the central axis of the return spring (523) are on the same straight line, one end of the return spring (523) is fixedly connected with the fixed column (522), the included angle between the return spring (523) and the strip plate (521) is 90°, and one end of the fixed column (522) is fixedly connected with the fixed mold (511).

6. A hot resistance lead forming apparatus as defined in claim 1, wherein: The bottom end inside of the threaded cap (531) is arc-shaped, the gasket (534) is provided with a plurality of gaskets, the gasket (534) is located below the hole plate (515), the bottom end surface of the limiting ring (533) is attached to the upper end surface of the hole plate (515), and the outside of the clamping mechanism (535) is attached to the inside of the curved groove (513).

7. The hot resistance lead forming apparatus of claim 1 wherein: The projection of the rubber pad (5351) in the vertical direction is annular, the lower end of the rubber tube (5353) is adhesively fixed with a limiting ring (533), the diameter of the lower end of the guide groove (5352) is half of the diameter of the upper end, the pipe interconnecting hole (5354) is provided with a plurality of pipe interconnecting holes, the pipe interconnecting holes (5354) are annularly distributed on the inside of the rubber tube (5353), the height of the air bag belt (5355) is equal to the height of the rubber tube (5353), the outside of the air bag ball (5356) is attached to the inside of the pipe interconnecting hole (5354), and the number of the air bag ball (5356) corresponds to the number of the pipe interconnecting hole (5354).

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