A PTC element screening and testing device

Abstract

The utility model discloses a PTC element screening inspection device, including conveying frame, the conveying frame top inboard is installed with conveyer belt, and the upper surface middle part of conveying frame is connected with support frame, and the upper surface of support frame is connected with the cylinder, and the cylinder output penetrates support frame and is connected with detection head, detection head is close to the one side middle part of conveying frame end part and is connected with the cross bar of horizontal pole, and the lower portion of horizontal pole is provided with the baulk, and the first spring of symmetrical arrangement is connected between horizontal pole and baulk, if PTC element is unqualified, when unqualified PTC element is conveyed to the end of conveyer belt, detection head will give motor transmission start signal, makes motor rotation drive the rotation of the shaft, thereby makes the blanking plate to rotate and moves away from the conveying frame with the shaft as the center, makes unqualified PTC element to be conveyed to the collection box and is collected, improves work efficiency when detecting and screening to PTC element, and reduces the detection error, can guarantee the factory quality of product.

Description

Technical Field

[0001] This utility model belongs to the field of PTC element production technology, specifically relating to a PTC element screening and inspection device. Background Technology

[0002] PTC elements, or positive temperature coefficient thermistors, are semiconductor devices whose resistance increases dramatically with increasing temperature. Above the Curie temperature, the resistance increases in a stepwise manner. They are commonly used for circuit overcurrent protection, overheat protection, and temperature control. They have a self-recovery function and do not require manual replacement.

[0003] PTC component screening and inspection is a rigorous testing process for components such as PTC thermistors. Through visual inspection, electrical performance testing, and environmental adaptability testing, components with manufacturing defects or unstable performance are eliminated, and products that meet specific resistance, withstand voltage, and operating time requirements are selected to ensure their reliability and stability in practical applications.

[0004] Currently, in existing technologies, the screening and testing of PTC components involves inspectors visually examining the components to check for physical defects such as damage, cracks, stains, bent leads, or oxidation deformation. Next, calipers, micrometers, and other measuring tools are used to precisely measure the component's dimensional parameters to ensure they meet design specifications. Finally, instruments such as multimeters are used to test the component's basic resistance value to determine if it is within the specified normal range, thus screening out qualified products. While this method can screen and test PTC components, in practice, manual inspection and screening consumes a significant amount of time, reduces work efficiency, and introduces testing errors that can affect the quality of the finished products. Utility Model Content

[0005] The purpose of this invention is to solve the problems that the existing manual inspection and screening method consumes a lot of time, reduces work efficiency, and has inspection errors that affect the quality of the finished products. The invention provides a PTC component screening and inspection device.

[0006] The objective of this utility model can be achieved through the following technical solutions: A PTC element screening and testing device includes a conveyor frame, a conveyor belt installed on the inner side of the upper part of the conveyor frame, a support frame connected to the middle of the upper surface of the conveyor frame, a cylinder connected to the upper surface of the support frame, the output end of the cylinder passing through the support frame and connected to a detection head; a crossbar connected to the middle of the side of the detection head near the end of the conveyor frame, a stop bar provided below the crossbar, and symmetrically arranged first springs connected between the crossbar and the stop bar; a baffle plate connected to the upper surface of the conveyor frame at the position corresponding to the stop bar; a symmetrically arranged support plate connected at an inclined position at the end of the conveyor frame away from the baffle plate; symmetrically arranged rotating blocks connected to the lower surface of the feeding plate away from the conveyor frame, each rotating block having a rotating shaft connected to its middle, and the rotating shaft being rotatably connected to the support plate, one end of the rotating shaft passing through the support plate and connected to a motor fixed to the support plate.

[0007] Preferably, the upper surface of the stop bar is connected to symmetrically arranged limiting rods, and the limiting rods are located inside the first spring. The crossbar is provided with a limiting groove corresponding to the position of the limiting rod, and the limiting rod is slidably connected in the limiting groove.

[0008] Preferably, a rack is connected to the lower end of one end of the crossbar, a gear is engaged at the lower end of the rack, a threaded rod is connected to the middle of the side of the gear near the crossbar, an internal threaded sleeve is threaded to the outer side of the threaded rod, and a movable plate is connected to the end of the internal threaded sleeve away from the fixed block.

[0009] Preferably, a fixing block is connected to the upper surface of the conveyor frame at the position corresponding to the threaded rod, the threaded rod is rotatably connected to the fixing block, a positioning sleeve is connected to the side of the moving plate close to the fixing block and away from the internal threaded sleeve, and a positioning rod is connected to the fixing block at the position corresponding to the positioning sleeve, the positioning rod is slidably connected inside the positioning sleeve.

[0010] Preferably, the side of the movable plate away from the internal threaded sleeve is connected to symmetrically arranged telescopic sleeves, each telescopic sleeve having a telescopic rod slidably connected inside, and each telescopic rod having a push plate connected to the end away from the telescopic sleeve.

[0011] Preferably, a second spring is symmetrically arranged between the movable plate and the push plate, and the second spring is located outside the telescopic sleeve.

[0012] Preferably, the side of the push plate away from the telescopic rod is rotatably connected to a plurality of evenly arranged first rotating rods, and the baffle is rotatably connected to a plurality of evenly arranged second rotating rods at the position corresponding to the push plate.

[0013] Preferably, a collection box is provided below the feeding plate corresponding to the conveyor frame, and symmetrically arranged L-shaped inserts are connected to the upper part of the collection box near the side of the conveyor frame. A symmetrically arranged positioning block is connected to the position of the L-shaped insert on the conveyor frame, and the insert is inserted into the positioning block.

[0014] The beneficial effects of this utility model are: The PTC element is placed on the conveyor belt with one side against the baffle. When the conveyor belt is halfway through its journey, the cylinder moves, causing the baffle to descend and blocking the PTC element. Simultaneously, the crossbar descends, causing the rack to descend, which in turn rotates the gear, which in turn rotates the threaded rod. This causes the internal threaded sleeve to move away from the threaded rod, moving the push plate closer to the PTC element to correct its position. After the PTC element is corrected, the cylinder raises the baffle. When the conveyor belt finishes its journey, the PTC element is directly below the detection head. The cylinder then moves again, causing the detection head to descend. During this descent, the detection head takes a picture of the PTC element and transmits the image to the terminal for comparison, determining if the PTC element's appearance is correct. If the PTC element is qualified, after the detection head descends, it will contact the pins of the PTC element to perform the detection and determine whether the PTC element is qualified. If the PTC element is qualified, it can be collected by the conveyor belt and the unloading plate. If the PTC element is unqualified, when the unqualified PTC element is conveyed to the end of the conveyor belt, the detection head will transmit a start signal to the motor, causing the motor to rotate and drive the shaft to rotate. This causes the unqualified PTC element to rotate around the shaft and move away from the conveyor frame, so that the unqualified PTC element is conveyed to the collection box for collection. This improves the work efficiency and reduces the detection error when detecting and screening PTC elements, and can ensure the quality of the products leaving the factory. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a perspective view of the other side of this utility model; Figure 4 yes Figure 3 A magnified view of a section at point B in the middle; Figure 5 This is an exploded view of the material feed plate in this utility model.

[0017] In the diagram: 1. Conveyor belt; 2. Crossbar; 3. Rack; 4. Telescopic sleeve; 5. Support plate; 6. Collection box; 11. Support frame; 12. Cylinder; 13. Detection head; 21. Stop bar; 22. First spring; 23. Limiting rod; 24. Limiting groove; 31. Gear; 32. Threaded rod; 33. Internal threaded sleeve; 34. Moving plate; 35. Positioning sleeve; 36. Positioning rod; 37. Fixing block; 41. Telescopic rod; 42. Push plate; 43. Second spring; 44. First rotating rod; 45. Second rotating rod; 51. Feeding plate; 52. Rotating block; 53. Rotating shaft; 54. Motor; 61. Insert block; 62. Positioning block. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] Please see Figure 1 - Figure 5 As shown, a PTC element screening and inspection device includes a conveyor frame 1, and a conveyor belt is installed on the inner side above the conveyor frame 1 for conveying PTC elements.

[0020] A support frame 11 is connected to the middle of the upper surface of the conveyor frame 1. A cylinder 12 is connected to the upper surface of the support frame 11. The output end of the cylinder 12 passes through the support frame 11 and is connected to the detection head 13. The support frame 11 is used to support and fix the cylinder 12. The cylinder 12 is used to raise and lower the detection head 13 so that the detection head 13 contacts the PTC element. The detection head 13 is used to detect whether the PTC element is qualified.

[0021] A crossbar 2 is connected to the middle of one side of the detection head 13 near the end of the conveyor frame 1. The crossbar 2 is used to support the stop bar 21.

[0022] A stop bar 21 is provided below the crossbar 2, which is used to block the PTC element.

[0023] A first spring 22 is symmetrically arranged between the crossbar 2 and the stop bar 21. The first spring 22 is used to reset the stop bar 21.

[0024] The upper surface of the stop bar 21 is connected to symmetrically arranged limiting rods 23, and the limiting rods 23 are located inside the first spring 22. The crossbar 2 has a limiting groove 24 corresponding to the position of the limiting rods 23. The limiting rods 23 are slidably connected in the limiting groove 24. Through the cooperation of the limiting rods 23 and the limiting groove 24, the position of the stop bar 21 can be limited to prevent the stop bar 21 from deviating.

[0025] A baffle 25 is connected to the upper surface of the conveyor frame 1 at the position corresponding to the baffle 21. The baffle 25 is used to block the PTC element.

[0026] The thickness of the baffle 25 is set according to the position of the detection head 13. This setting ensures that the detection head 13 can correspond to the pin of the PTC element.

[0027] A rack 3 is connected to one end of the crossbar 2. A gear 31 is meshed at the lower end of the rack 3. The rack 3 is used to drive the gear 31 to rotate, and the gear 31 is used to drive the threaded rod 32 to rotate.

[0028] A threaded rod 32 is connected to the middle of the side of the gear 31 near the crossbar 2. A fixing block 37 is connected to the upper surface of the conveyor frame 1 at the position corresponding to the threaded rod 32. The threaded rod 32 is rotatably connected to the fixing block 37, and the fixing block 37 is used to fix the position of the threaded rod 32.

[0029] The threaded rod 32 is threaded to the outer side and connected to an internal threaded sleeve 33. The end of the internal threaded sleeve 33 away from the fixed block 37 is connected to a movable plate 34, which is used to drive the push plate 42 to move.

[0030] A positioning sleeve 35 is connected to the side of the movable plate 34 near the fixed block 37 and away from the internal threaded sleeve 33. A positioning rod 36 is connected to the fixed block 37 at the position corresponding to the positioning sleeve 35. The positioning rod 36 is slidably connected inside the positioning sleeve 35. Through the cooperation between the positioning rod 36 and the positioning sleeve 35, the position of the movable plate 34 can be limited to prevent the movable plate 34 from deflecting during movement. Furthermore, through the cooperation between the positioning rod 36 and the positioning sleeve 35, the internal threaded sleeve 33 can be driven to move when the threaded rod 32 rotates.

[0031] The movable plate 34 is connected to a symmetrically arranged telescopic sleeve 4 on the side away from the internal threaded sleeve 33. A telescopic rod 41 is slidably connected inside each telescopic sleeve 4. A push plate 42 is connected to the end of each telescopic rod 41 away from the telescopic sleeve 4. The push plate 42 is used to correct the position of the PTC element. Through the cooperation of the telescopic sleeve 4 and the telescopic rod 41, the push plate 42 can correct the position of PTC elements of different sizes.

[0032] A symmetrically arranged second spring 43 is connected between the movable plate 34 and the push plate 42, and the second spring 43 is located outside the telescopic sleeve 4. The second spring 43 is used to reset the push plate 42.

[0033] The push plate 42 is rotatably connected to a plurality of evenly arranged first rotating rods 44 on the side away from the telescopic rod 41. The baffle 25 is rotatably connected to a plurality of evenly arranged second rotating rods 45 at the position corresponding to the push plate 42. Through the cooperation of the first rotating rods 44 and the second rotating rods 45, the friction between the baffle 25 and the push plate 42 on the PTC element can be reduced when the push plate 42 calibrates the PTC element, ensuring that the PTC element can continue to be conveyed during the calibration process.

[0034] The end of the conveyor frame 1 away from the baffle 25 is inclinedly connected to symmetrically arranged support plates 5, and a feeding plate 51 is provided between the support plates 5. The feeding plate 51 is used to guide the PTC element feeding.

[0035] The lower surface of the feeding plate 51 is connected to symmetrically arranged rotating blocks 52 at a position away from the conveyor frame 1. Each rotating block 52 is connected to a rotating shaft 53 in the middle, and the rotating shaft 53 is rotatably connected to the support plate 5. Through the cooperation of the rotating blocks 52 and the rotating shaft 53, the position of the feeding plate 51 can be limited.

[0036] One end of the rotating shaft 53 passes through the support plate 5 and is connected to the motor 54 fixed on the support plate 5. The motor 54 is used to drive the material feeding plate 51 to rotate and to fix the position of the material feeding plate 51.

[0037] A collection box 6 is provided below the feed plate 51 corresponding to the conveyor frame 1. The collection box 6 is used to collect PTC elements that fail the test.

[0038] The upper part of the collection box 6 near the conveyor frame 1 is connected to symmetrically arranged L-shaped inserts 61. The conveyor frame 1 is connected to symmetrically arranged positioning blocks 62 at the positions corresponding to the L-shaped inserts 61. The inserts 61 are inserted into the positioning blocks 62. Through the cooperation of the inserts 61 and the positioning blocks 62, the position of the collection box 6 can be fixed. When it is necessary to remove the collection box 6, the inserts 61 are moved out of the positioning blocks 62 by lifting the collection box 6, so that the collection box 6 is no longer fixed, thereby processing the unqualified PTC components in the collection box 6.

[0039] In practical use, the conveyor belt operates intermittently. During each conveyor belt cycle, cylinder 12 operates twice (i.e., cylinder 12 operates once when the conveyor belt is halfway through its cycle and again when the cycle ends). The PTC element is placed on the conveyor belt with one side against baffle 25. When the conveyor belt is halfway through its cycle, cylinder 12 operates, causing the detection head 13 to descend. The descent of detection head 13 causes the crossbar 2 to descend, which in turn causes the stop bar 21 to descend. After the crossbar 2 descends, its lower surface contacts the upper surface of the conveyor frame 1, thus blocking the PTC element during transmission. The crossbar 2 continues to descend... Simultaneously, this causes rack 3 to descend, which in turn causes gear 31 to rotate. Gear 31 then rotates, causing threaded rod 32 to rotate. With the cooperation of positioning rod 36 and positioning sleeve 35, threaded rod 32 causes internal threaded sleeve 33 to move away from threaded rod 32, thereby causing push plate 42 to move closer to PTC element. With the cooperation of stop rod 21, baffle 25, and push plate 42, the position of PTC element is corrected, aligning PTC element with detection head 13. After PTC element correction is completed, cylinder 12 causes detection head 13 to rise, thereby causing baffle 25 to rise, so that baffle 25 no longer obstructs PTC. The TC element enables the PTC element to continue conveying. After the conveyor belt finishes running, the PTC element is directly below the detection head 13. The cylinder 12 then runs again, causing the detection head 13 to descend. During the descent, the detection head 13 takes a picture of the PTC element and transmits the picture to the terminal for comparison to determine whether the PTC element's appearance is qualified. After descending, the detection head 13 contacts the pins of the PTC element, achieving the purpose of detecting the PTC element and determining whether it is qualified. If the PTC element is qualified, under the action of the conveyor belt, in conjunction with the unloading plate 51, it can... Qualified PTC components are collected. If a PTC component is unqualified, when the unqualified PTC component is conveyed to the end of the conveyor belt, the detection head 13 will transmit a start signal to the motor 54, causing the motor 54 to rotate and drive the rotating shaft 53 to rotate. This causes the feeding plate 51 to rotate around the rotating shaft 53 and move away from the conveyor frame 1, so that the unqualified PTC component is conveyed to the collection box 6 for collection. After collection, the motor 54 rotates again to reset the feeding plate 51. This improves the work efficiency and reduces the detection error when detecting and screening PTC components, and can ensure the quality of the products leaving the factory.

[0040] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] 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.

Claims

1. A PTC element screening and testing device, characterized in that: Includes a conveyor frame (1), a conveyor belt is installed on the inner side above the conveyor frame (1), a support frame (11) is connected to the middle of the upper surface of the conveyor frame (1), a cylinder (12) is connected to the upper surface of the support frame (11), and the output end of the cylinder (12) passes through the support frame (11) and is connected to the detection head (13). The detection head (13) is connected to a crossbar (2) in the middle of one side near the end of the conveyor frame (1). A stop bar (21) is provided below the crossbar (2). A first spring (22) is symmetrically arranged between the crossbar (2) and the stop bar (21). A baffle (25) is connected to the upper surface of the conveyor frame (1) at the position corresponding to the stop bar (21). The conveyor frame (1) is inclined at one end away from the baffle (25) and is connected to a symmetrically arranged support plate (5). The lower surface of the feed plate (51) is connected to a symmetrically arranged rotating block (52) at a position away from the conveyor frame (1). The rotating block (52) is connected to a rotating shaft (53) in the middle. The rotating shaft (53) is rotatably connected to the support plate (5). One end of the rotating shaft (53) passes through the support plate (5) and is connected to a motor (54) fixed on the support plate (5).

2. The PTC element screening and testing device according to claim 1, characterized in that: The upper surface of the stop bar (21) is connected to symmetrically arranged limiting rods (23), and the limiting rods (23) are located inside the first spring (22). The crossbar (2) has a limiting groove (24) corresponding to the position of the limiting rods (23), and the limiting rods (23) are slidably connected in the limiting grooves (24).

3. The PTC element screening and testing device according to claim 2, characterized in that: A rack (3) is connected to the lower end of one end of the crossbar (2), and a gear (31) meshes with the lower end of the rack (3). A threaded rod (32) is connected to the middle of the side of the gear (31) near the crossbar (2). An internal threaded sleeve (33) is threaded to the outer side of the threaded rod (32), and a movable plate (34) is connected to the end of the internal threaded sleeve (33) away from the fixed block (37).

4. The PTC element screening and testing device according to claim 3, characterized in that: A fixing block (37) is connected to the upper surface of the conveyor frame (1) at the position corresponding to the threaded rod (32). The threaded rod (32) is rotatably connected to the fixing block (37). A positioning sleeve (35) is connected to the side of the moving plate (34) close to the fixing block (37) and away from the internal threaded sleeve (33). A positioning rod (36) is connected to the fixing block (37) at the position corresponding to the positioning sleeve (35). The positioning rod (36) is slidably connected inside the positioning sleeve (35).

5. The PTC element screening and testing device according to claim 4, characterized in that: The movable plate (34) is connected to a symmetrically arranged telescopic sleeve (4) on the side away from the internal threaded sleeve (33). A telescopic rod (41) is slidably connected inside each telescopic sleeve (4). A push plate (42) is connected to the end of each telescopic rod (41) away from the telescopic sleeve (4).

6. The PTC element screening and testing device according to claim 5, characterized in that: A symmetrically arranged second spring (43) is connected between the movable plate (34) and the push plate (42), and the second spring (43) is located outside the telescopic sleeve (4).

7. The PTC element screening and testing device according to claim 6, characterized in that: The push plate (42) is rotatably connected to a plurality of evenly arranged first rotating rods (44) on the side away from the telescopic rod (41), and the baffle (25) is rotatably connected to a plurality of evenly arranged second rotating rods (45) at the position corresponding to the push plate (42).

8. The PTC element screening and testing device according to claim 7, characterized in that: The conveyor frame (1) is provided with a collection box (6) below the feed plate (51). The collection box (6) is connected to the upper part of the side of the conveyor frame (1) with symmetrically arranged L-shaped inserts (61). The conveyor frame (1) is connected to the position of the L-shaped inserts (61) with symmetrically arranged positioning blocks (62). The inserts (61) are inserted into the positioning blocks (62).

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