A compression device for PTC plates
Patent Information
- Application Number
- CN202522246032.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-23
AI Technical Summary
[0003]目前工作人员将装有电极片和热敏电阻的壳体直接放置于冲压部位后，便启动设备进行冲压，因缺乏针对壳体的定位与限位结构，冲压过程中壳体易受压力作用发生偏移或倾斜，导致 “压歪” 现象频发，这不仅会破坏电极片与热敏电阻的接触状态，还会使壳体外形不符合装配标准，严重干扰后续 PTC 板与加热器其他部件的组装工序，最终造成生产效率下降与产品合格率降低
1.本申请中，在对PTC板主体进行压紧时，可通过驱动电机的输出轴的转动，以带动转动座进行旋转，促使两端拉杆同步拉动两侧限位块沿限位槽滑动，进而带动顶部定位条相向移动，利用定位条贴合壳体的曲面结构，从壳体两侧实现紧密夹持，相较于传统直接冲压的方式，该结构能通过控制定位条的夹持力度与位置，有效限制壳体在冲压过程中的水平偏移与倾斜，避免因 “压歪” 破坏电极片与热敏电阻的接触状态，保障PTC板主体核心组件的贴合精度，为后续装配奠定良好基础。
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Figure CN224749862U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of PTC heater manufacturing technology, and more particularly to a PTC plate clamping device. Background Technology
[0002] The PTC plate is the core functional component of the PTC heater. Its structure consists of two electrode plates and a thermistor. The thermistor is fixed to the side wall of the electrode plates by adhesive bonding and is symmetrically sandwiched by the two electrode plates, forming a sandwich structure of "electrode plate-thermistor-electrode plate". After assembly, the assembly needs to be inserted into a special housing. The core function of the housing is to fix the electrode plates and ensure the structural stability of the PTC plate. Since the tightness of the contact between the electrode plates and the thermistor directly affects the conductivity and heating performance of the PTC heater, pressure needs to be applied to the outer wall of the housing to cause the housing to deform in a controllable manner. The deformation of the housing compresses the electrode plates, thereby strengthening the adhesion between the electrode plates and the thermistor. Based on this, the stamping device becomes a key piece of equipment in the PTC plate production process.
[0003] Currently, workers place the housing containing the electrode plates and thermistors directly onto the stamping area and start the stamping process. Due to the lack of positioning and limiting structures for the housing, the housing is prone to displacement or tilting under pressure during the stamping process, resulting in frequent "crooked" phenomena. This not only damages the contact between the electrode plates and the thermistors but also makes the housing shape not conform to assembly standards, seriously interfering with the subsequent assembly processes of the PTC board and other heater components, ultimately leading to a decrease in production efficiency and a lower product qualification rate. Utility Model Content
[0004] In view of the above-mentioned problems existing in the prior art, the main objective of this application is to provide a clamping device for PTC plates.
[0005] The technical solution of this application is as follows: a PTC plate pressing device includes a frame, a base plate is fixedly connected to the top of the frame, a worktable is fixedly installed on the top of the base plate, a positioning plate is fixedly installed on the top of the worktable, a PTC plate body is placed on the top of the positioning plate, a positioning component for limiting the position of the PTC plate body is provided inside the positioning plate, and adsorption components for adsorbing the PTC plate body are provided at both ends of the top of the positioning plate. The positioning component includes an inner groove in the middle of the positioning plate, and limit grooves are formed inside the positioning plate on both sides of the inner groove. Limit blocks are slidably connected inside the limit grooves.
[0006] By adopting the above technical solution, the use of the limiting groove and the limiting block can play an important role in limiting the movement of the positioning strip, so as to ensure the normal use of the positioning component.
[0007] In a preferred embodiment, the positioning assembly further includes a drive motor fixedly installed on the inner wall of the inner groove. A rotating seat is fixedly connected to the output shaft of the drive motor. A pull rod is rotatably connected to both ends of the rotating seat. A positioning strip is fixedly connected between the tops of the two limiting blocks. The bottom of the positioning strip is rotatably connected to the end of the pull rod away from the rotating seat.
[0008] By adopting the above technical solution, the rotation of the output shaft of the drive motor drives the rotating seat to rotate, causing the pull rods at both ends to pull the limit blocks on both sides to slide along the limit groove, thereby driving the top positioning strip to move towards each other. By using the positioning strip to fit the curved surface structure of the shell, a tight clamping is achieved from both sides of the shell.
[0009] In a preferred embodiment, the adsorption assembly includes a miniature air pump fixedly installed on both sides of the positioning plate. Both ends of the positioning plate are provided with receiving grooves, and suction cups are fixedly connected inside the receiving grooves. The output end of the miniature air pump is fixedly connected to a pipe, and the end of the pipe away from the miniature air pump extends into the suction cup.
[0010] By adopting the above technical solution, a near vacuum is created inside the suction cup through the tubing, causing the suction cup to generate negative pressure and tightly adhere to the shell of the PTC plate body, thus fixing the shell from the vertical direction.
[0011] In a preferred embodiment, the PTC board body includes electrode plates bonded to both sides of a thermistor, both the thermistor and the electrode plates being inserted into the interior of a housing, the height of which is higher than the height of the positioning strip.
[0012] By adopting the above technical solution, the assembly of the components is achieved through electrode sheets, thermistors, and housings.
[0013] In a preferred embodiment, each of the two positioning strips has a curved surface structure that fits into the housing on its adjacent side, and the positioning strips are slidably connected to the positioning plate.
[0014] By adopting the above technical solution, the positioning strip fits more tightly with the shell.
[0015] In a preferred embodiment, limit posts are fixedly connected to the four corners of the top of the base plate, a stamping plate is slidably connected between the four limit posts, and a top plate is fixedly connected between the top ends of the four limit posts.
[0016] By adopting the above technical solution, the setting of the limiting post can play an important role in limiting the sliding of the stamping plate.
[0017] In a preferred embodiment, a stamping cylinder is fixedly installed on the top of the top plate, a stamping head is fixedly connected to the bottom of the stamping plate, and the piston rod of the stamping cylinder is fixedly connected to the stamping plate.
[0018] By adopting the above technical solution, the piston rod of the stamping cylinder can be extended and retracted to push the stamping plate and stamping head downward, thereby achieving the purpose of pressing the PTC plate body.
[0019] Compared with the prior art, the advantages and positive effects of this application are as follows: 1. In this application, when the PTC board body is pressed, the output shaft of the drive motor can be rotated to drive the rotating seat to rotate, causing the pull rods at both ends to pull the limit blocks on both sides to slide along the limit groove, thereby driving the top positioning strip to move towards each other. By using the curved surface structure of the positioning strip to fit the shell, a tight clamping is achieved from both sides of the shell. Compared with the traditional direct stamping method, this structure can effectively limit the horizontal offset and tilt of the shell during the stamping process by controlling the clamping force and position of the positioning strip, avoiding damage to the contact state between the electrode sheet and the thermistor due to "crooked pressing", ensuring the fitting accuracy of the core components of the PTC board body, and laying a good foundation for subsequent assembly.
[0020] 2. In this application, by setting up a micro air pump, a near vacuum can be generated inside the suction cup through the tubing, so that the suction cup generates negative pressure and tightly adsorbs the housing of the PTC plate body, fixing the housing from the vertical direction, so as to cause the housing to produce controllable deformation, further optimizing the contact tightness between the electrode sheet and the thermistor, and improving the conductivity efficiency of the PTC heater. Attached Figure Description
[0021] Figure 1 An overall perspective view of a PTC plate clamping device provided in this application; Figure 2 This application provides a top view of the positioning plate of a PTC plate clamping device; Figure 3 A half-sectional view of the positioning plate of a PTC plate clamping device provided in this application; Figure 4 This application provides a clamping device for a PTC plate. Figure 3 Enlarged view of point A in the middle; Figure 5 This application provides a schematic diagram of the main structure of a PTC plate for a PTC plate clamping device.
[0022] Legend: 1. Frame; 2. Base plate; 3. Punching head; 4. Positioning plate; 5. Worktable; 6. Positioning assembly; 61. Inner groove; 62. Limiting groove; 63. Limiting block; 64. Positioning strip; 65. Rotating seat; 66. Pull rod; 67. Drive motor; 7. Adsorption assembly; 71. Receiving groove; 72. Suction cup; 73. Pipe fitting; 74. Miniature air pump; 8. PTC plate body; 81. Electrode sheet; 82. Thermistor; 83. Housing; 9. Punching cylinder; 10. Top plate. Detailed Implementation
[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0024] Reference Figure 1-5 A PTC plate clamping device includes a frame 1, a base plate 2 fixedly connected to the top of the frame 1, a worktable 5 fixedly installed at the top of the base plate 2, a positioning plate 4 fixedly installed at the top of the worktable 5, a PTC plate body 8 placed on the top of the positioning plate 4, a positioning component 6 for limiting the position of the PTC plate body 8 inside the positioning plate 4, and adsorption components 7 for adsorbing the PTC plate body 8 at both ends of the top of the positioning plate 4. The positioning component 6 includes an inner groove 61 opened in the middle of the positioning plate 4, and limit grooves 62 opened inside the positioning plate 4 on both sides of the inner groove 61. Limit blocks 63 are slidably connected inside the limit grooves 62. Through the cooperation of the limit grooves 62 and the limit blocks 63, the movement of the positioning strip 64 can be effectively limited to ensure the normal use of the positioning component 6.
[0025] Specifically, the positioning component 6 also includes a drive motor 67 fixedly installed on the inner wall of the inner groove 61. A rotating seat 65 is fixedly connected to the output shaft of the drive motor 67. Pull rods 66 are rotatably connected to both ends of the rotating seat 65. A positioning strip 64 is fixedly connected between the tops of the two limiting blocks 63. When the PTC plate body 8 is pressed, the rotation of the output shaft of the drive motor 67 drives the rotating seat 65 to rotate, causing the pull rods 66 at both ends to pull the limiting blocks 63 on both sides to slide along the limiting groove 62, thereby causing the top positioning strip 64 to move towards each other. By using the positioning strip 64 to fit the curved surface structure of the housing 83, a tight clamping is achieved from both sides of the housing 83. Compared with the traditional direct stamping method, this structure can effectively limit the horizontal displacement and tilt of the housing 83 during the stamping process by controlling the clamping force and position of the positioning strip 64, avoiding "crooked" pressing. The contact between electrode 81 and the thermistor 82 is disrupted to ensure the fitting accuracy of the core components of the PTC board body 8, laying a good foundation for subsequent assembly. The bottom of the positioning strip 64 is rotatably connected to the end of the pull rod 66 away from the rotating seat 65. The adsorption assembly 7 includes a miniature air pump 74 fixedly installed on both sides of the positioning plate 4. Both ends of the positioning plate 4 have receiving grooves 71, and suction cups 72 are fixedly connected inside the receiving grooves 71. Through the setting of the miniature air pump 74, a near vacuum can be generated inside the suction cups 72 through the tube 73, so that the suction cups 72 generate negative pressure and tightly adsorb the shell 83 of the PTC board body 8, fixing the shell 83 from the vertical direction, so as to cause the shell 83 to undergo controllable deformation, further optimizing the contact tightness between the electrode 81 and the thermistor 82, and improving the PTC. The conductivity of the heater is such that the output end of the micro air pump 74 is fixedly connected to the tube 73, and the end of the tube 73 away from the micro air pump 74 extends into the suction cup 72. The PTC plate body 8 includes electrode plates 81 bonded to both sides of the thermistor 82. The thermistor 82 and the electrode plates 81 are both inserted into the interior of the housing 83.
[0026] Specifically, the two positioning strips 64 are provided with curved surface structures that fit with the housing 83 on their adjacent sides, making the positioning strips 64 fit more tightly with the housing 83. The positioning strips 64 are slidably connected to the positioning plate 4. The four corners of the top are fixedly connected to limit posts, which play an important role in limiting the sliding of the stamping plate. The stamping plate is slidably connected between the four limit posts, and the top plate 10 is fixedly connected between the tops of the four limit posts. By extending and retracting the piston rod of the stamping cylinder 9, the stamping plate and the stamping head 3 can be pushed downward, thereby achieving the purpose of pressing the PTC plate body 8. The stamping cylinder 9 is fixedly installed on the top of the top plate 10, and the stamping head 3 is fixedly connected to the bottom of the stamping plate. The piston rod of the stamping cylinder 9 is fixedly connected to the stamping plate.
[0027] Working Principle: First, the operator places the assembled PTC board body 8 on top of the positioning plate 4 and between the two positioning strips 64. Then, the micro air pump 74 is activated via an external controller. The micro air pump 74 creates a near-vacuum within the suction cup 72 through the pipe 73, generating negative pressure and tightly adhering to the housing 83 of the PTC board body 8. This vertically fixes the housing 83, causing controllable deformation. Next, the drive motor 67 is activated. The rotation of the output shaft of the drive motor 67 drives the rotating seat 65 to rotate, causing the pull rods 66 at both ends to simultaneously pull the limit blocks 63 on both sides to slide along the limit grooves 62. This, in turn, moves the top positioning strips 64 towards each other. The positioning strips 64 conform to the curved structure of the housing 83, achieving tight clamping from both sides. Compared to traditional direct stamping, this structure effectively limits the horizontal displacement and tilting of the housing 83 during the stamping process by controlling the clamping force and position of the positioning strips 64, preventing "crooked" pressure. Disrupting the contact state between electrode plate 81 and thermistor 82 ensures the bonding accuracy of the core components of PTC board body 8.
Claims
1. A pressing device for PTC plates, comprising a frame (1), characterized in that: The top of the frame (1) is fixedly connected to a base plate (2), and a workbench (5) is fixedly installed on the top of the base plate (2). A positioning plate (4) is fixedly installed on the top of the workbench (5). A PTC board body (8) is placed on the top of the positioning plate (4). The positioning plate (4) is provided with a positioning component (6) for limiting the position of the PTC board body (8). Both ends of the top of the positioning plate (4) are provided with adsorption components (7) for adsorbing the PTC board body (8). The positioning component (6) includes an inner groove (61) in the middle of the positioning plate (4), and a limiting groove (62) is provided inside the positioning plate (4) and on both sides of the inner groove (61). A limiting block (63) is slidably connected inside the limiting groove (62).
2. The PTC plate clamping device according to claim 1, characterized in that: The positioning component (6) also includes a drive motor (67) fixedly installed on the inner wall of the inner groove (61). A rotating seat (65) is fixedly connected to the output shaft of the drive motor (67). A pull rod (66) is rotatably connected to both ends of the rotating seat (65). A positioning strip (64) is fixedly connected between the tops of the two limiting blocks (63). The bottom of the positioning strip (64) is rotatably connected to the end of the pull rod (66) away from the rotating seat (65).
3. The PTC plate clamping device according to claim 1, characterized in that: The adsorption assembly (7) includes a miniature air pump (74) fixedly installed on both sides of the positioning plate (4). Both ends of the positioning plate (4) are provided with receiving grooves (71). The receiving grooves (71) are fixedly connected with suction cups (72). The output end of the miniature air pump (74) is fixedly connected with a pipe (73). The end of the pipe (73) away from the miniature air pump (74) extends into the suction cup (72).
4. The PTC plate clamping device according to claim 2, characterized in that: The PTC board body (8) includes electrode sheets (81) bonded to both sides of the thermistor (82). The thermistor (82) and the electrode sheets (81) are both inserted into the interior of the housing (83). The height of the housing (83) is higher than the height of the positioning strip (64).
5. The PTC plate clamping device according to claim 4, characterized in that: Both of the two positioning strips (64) have a curved surface structure that fits into the housing (83) on their adjacent sides, and the positioning strips (64) are slidably connected to the positioning plate (4).
6. The PTC plate clamping device according to claim 1, characterized in that: The four corners of the top of the base plate (2) are fixedly connected to limit posts, and a stamping plate is slidably connected between the four limit posts. The top of the four limit posts is fixedly connected to the top plate (10).
7. A PTC plate clamping device according to claim 6, characterized in that: A stamping cylinder (9) is fixedly installed on the top of the top plate (10), a stamping head (3) is fixedly connected to the bottom of the stamping plate, and the piston rod of the stamping cylinder (9) is fixedly connected to the stamping plate.