Automatic turn-over device for piezoresistor disc

Abstract

The utility model relates to the technical field of solder paste printing machine equipment, and discloses a piezoresistor disc automatic turn-over device which comprises a base, two clamping plates are arranged above the base, the two clamping plates are symmetrically arranged up and down, the two clamping plates are attached to each other, and a plurality of containing grooves are formed in the middles of the clamping plates. According to the automatic turn-over device for the piezoresistor disc, the two positioning plates corresponding to the two clamping plates are clamped through the two clamping jaws which correspond to each other up and down, so that the two clamping plates can be driven to turn over when a double-shaft motor drives a rotating shaft to rotate through a chain, and then the piezoresistor disc and the two clamping plates are turned over in the original place; and the effects that the two clamping plates and the piezoresistor disc can be turned over automatically, the positions of the clamping plates and the piezoresistor disc can be prevented from deviating during turning over, the positions of the clamping plates and the piezoresistor disc below the tin brushing mechanism do not need to be adjusted again, and the working efficiency of turning over the piezoresistor disc and the printing precision of the solder paste are improved are achieved.

Description

Technical Field

[0001] This application relates to the technical field of solder paste printing equipment, specifically to an automatic flipping device for varistors. Background Technology

[0002] Varistors in electronic products are typically equipped with many electronic components, such as chips, resistors, capacitors, and inductors, to form circuits with specific functions. Therefore, multiple solder joints are set on the varistor for soldering these electronic components. In order to obtain better soldering results and improve soldering efficiency, a layer of solder paste is first applied to the solder joints of the varistor before soldering these electronic components.

[0003] Currently, the main method involves using two clamps to hold the varistor sheet and manually flipping it over. After flipping, solder paste is applied to the side of the varistor sheet that is not coated with solder paste. However, after manually flipping the varistor sheet, the positions of the clamps and the varistor sheet under the soldering mechanism need to be readjusted, which wastes time and has low work efficiency. Furthermore, if the adjustment is not done properly, the coating position of the varistor sheet is prone to shift, affecting the accuracy and efficiency of solder paste printing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an automatic flipping device for varistor sheets. This device automatically flips two clamping plates and the varistor sheet, preventing positional shifts during flipping and eliminating the need to readjust the positions of the clamping plates and the varistor sheet below the soldering mechanism. This improves the efficiency of flipping varistor sheets and the printing accuracy of solder paste. It solves the current problem of manually flipping the varistor sheet by clamping it with two clamping plates, then applying solder paste to the uncoated side. Manually flipping the varistor sheet requires readjusting the positions of the clamping plates and the varistor sheet below the soldering mechanism, which is time-consuming and inefficient. Furthermore, improper adjustment can easily cause the coating position of the varistor sheet to shift, affecting the printing accuracy and efficiency of solder paste.

[0005] To achieve the aforementioned goal of automatically flipping two clamping plates and a varistor sheet, preventing positional shifts during flipping, and eliminating the need to readjust their positions below the soldering mechanism, thereby improving the efficiency of flipping the varistor sheet and the printing accuracy of solder paste, this application provides the following technical solution: An automatic varistor sheet flipping device, comprising a base, two clamping plates symmetrically arranged on the top of the base, the two clamping plates fitting together, and multiple placement slots in the middle of the clamping plates. A dual-axis motor is mounted on the top of the base via a fixing block, and the motor shaft of the dual-axis motor has an outer surface... A chain is mounted on a sprocket. One end of the inner wall of the chain is mounted on the outer surface of the middle part of the rotating shaft via the sprocket. The outer surface of one end of the rotating shaft is rotatably mounted inside the inner wall of one end of the support plate. The support plate is located on the top of the base. A connecting plate is located at the other end of the rotating shaft. Two hydraulic rods are located at both ends of one side of the connecting plate. Two connecting frames are located at the ends of the two hydraulic rods away from the connecting plate. Two grippers are connected to both ends of the two connecting frames. The two connecting frames and the corresponding grippers are arranged symmetrically from top to bottom. The inner wall of the middle part of the grippers is slidably connected to the outer surface of one end of the positioning plate. The other end of the positioning plate is located at one end of the clamping plate.

[0006] The base is provided with a guide rail mechanism on the top, and a soldering mechanism is connected to one side of the guide rail mechanism. The soldering mechanism is located above the clamping plate.

[0007] The above solution uses two corresponding grippers to hold two positioning plates corresponding to the two clamping plates. When the dual-axis motor drives the rotating shaft via the chain, it can cause the two clamping plates to flip over, thereby flipping the varistor sheet and the two clamping plates in place. This achieves automatic flipping of the two clamping plates and the varistor sheet, avoiding positional shifts in the clamping plates and varistor sheet during flipping. It also eliminates the need to readjust the positions of the clamping plates and varistor sheet below the soldering mechanism, improving the efficiency of flipping the varistor sheet and the printing accuracy of the solder paste.

[0008] Furthermore, there are two chains. The inner walls of one end of the two chains are connected to the outer surface of the middle part of the two rotating shafts through two sprockets. The two rotating shafts are located at both ends of the clamping plate. The outer surfaces of one end of the two rotating shafts are rotatably disposed inside the inner walls of one end of the two support plates. The inner walls of the other end of the two chains are connected to the outer surfaces of the two motor shafts of the dual-axis motor through two sprockets.

[0009] The above scheme enables the two chains to drive the two rotating shafts to rotate synchronously through the operation of the dual-axis motor, thereby synchronously flipping both ends of the clamping plate and improving the stability of the clamping plate during flipping.

[0010] Furthermore, two position signal receivers are provided at both ends on one side of the connecting plate. The two position signal receivers are electrically connected to two hydraulic rods on the other side of the connecting plate, and the position signal receivers are electrically connected to the position signal transmitter.

[0011] The above scheme improves the accuracy of controlling the upper and lower hydraulic rods by matching the positions of the position signal receiver and the position signal transmitter.

[0012] Furthermore, the position signal transmitter is disposed on one side of one end of the support plate, the position signal transmitter is located above the rotation shaft, and the position of the position signal transmitter corresponds to the position of the position signal receiver located above it.

[0013] The above solution ensures that the hydraulic rod at the current position is controlled only by adjusting the height of the position signal transmitter, thus preventing control errors that could cause the clamping plate to fall off.

[0014] Furthermore, a positioning frame is provided on the inner wall of the placement slot, and the size of the inner wall of the middle part of the positioning frame is smaller than the size of the varistor sheet.

[0015] The above solution supports the varistor in the placement slot by setting the positioning frame, preventing the varistor from falling out of the placement slot during flipping and soldering.

[0016] Furthermore, two positioning plates are provided at both ends of the clamping plate. Each positioning plate includes a male positioning plate and a female positioning plate. A positioning block is provided on one side of the male positioning plate, and a positioning groove is provided on one side of the female positioning plate. The outer surface of the middle part of the positioning block is inserted into the inner wall of the positioning groove. The size of the positioning block is adapted to the size of the inner wall of the positioning groove. The two positioning plates provided at both ends of the clamping plate include two male positioning plates and two female positioning plates.

[0017] With the above solution, by inserting the positioning block of the positioning male plate into the positioning groove of the positioning female plate, the two corresponding positioning plates can be tightly combined. This prevents the gripper from pushing the positioning plate when it slides towards the positioning plate, which would cause the two clamping plates to move and become misaligned. It also prevents the two clamping plates from moving and damaging the varistor.

[0018] Furthermore, the two male positioning plates on the clamping plate are arranged diagonally opposite each other, and the two female positioning plates on the clamping plate are arranged diagonally opposite each other.

[0019] The above solution allows for the diagonal arrangement of two male positioning plates and two female positioning plates, enabling the two clamping plates to be spliced ​​from all directions while maintaining symmetry. This eliminates the need for careful adjustment and rotation of the clamping plates to determine the positions of the male and female positioning plates, thus improving the efficiency of clamping plate splicing.

[0020] Furthermore, a handle is provided between the two positioning plates at one end of the clamping plate, and the two ends of the handle are respectively located on opposite sides of the two positioning plates at one end of the clamping plate.

[0021] With the above solution, the clamping plate can be easily picked up by the handle. After flipping it over, the upper clamping plate can be easily removed to tin the varistor plate placed on the lower clamping plate.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This automatic flipping device for varistor sheets uses two corresponding upper and lower grippers to clamp two positioning plates corresponding to two clamping plates. When a dual-axis motor drives the rotating shaft via a chain, it can drive the two clamping plates to flip, thereby flipping the varistor sheet and the two clamping plates in place. This achieves automatic flipping of the two clamping plates and the varistor sheet, avoiding positional shifts of the clamping plates and the varistor sheet during flipping. It eliminates the need to readjust the position of the clamping plates and the varistor sheet below the soldering mechanism, improving the efficiency of flipping the varistor sheet and the accuracy of solder paste printing. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present application;

[0025] Figure 2 This is a schematic diagram of the front structure of this application;

[0026] Figure 3 This is a schematic diagram of the structure on the right side of this application;

[0027] Figure 4 This is a schematic diagram of the retractable hydraulic rod structure of this application;

[0028] Figure 5 This is a schematic diagram of the separation structure of the two clamping plates in this application;

[0029] Figure 6 This is a schematic diagram of the side-by-side flat structure of the two plates in this application.

[0030] In the picture:

[0031] 1. Base; 2. Dual-axis motor; 3. Chain; 4. Rotating shaft; 5. Support plate; 6. Connecting plate; 7. Hydraulic rod; 8. Connecting frame; 9. Gripper; 10. Positioning plate; 1001. Positioning male plate; 1002. Positioning female plate; 11. Clamping plate; 12. Placement slot; 13. Positioning frame; 14. Positioning slot; 15. Positioning block; 16. Position signal transmitter; 17. Position signal receiver; 18. Guide rail mechanism; 19. Soldering mechanism; 20. Handle. Detailed Implementation

[0032] The technical solutions of 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Please see Figure 1 , Figure 2 and Figure 4 This embodiment of an automatic flipping device for a varistor includes a base 1, with two clamping plates 11 arranged symmetrically on top of the base 1. The clamping plates 11 are fitted together and have multiple placement slots 12 in the middle. A dual-axis motor 2 is mounted on the top of the base 1 via a fixing block. A chain 3 is mounted on the outer surface of the motor shaft of the dual-axis motor 2 via a sprocket. One end of the inner wall of the chain 3 is mounted on the outer surface of the middle part of a rotating shaft 4 via a sprocket. The outer surface of one end of the rotating shaft 4 is rotatably mounted inside the inner wall of one end of a support plate 5. The support plate 5 is mounted on the top of the base 1. A connecting plate 6 is mounted on the other end of the rotating shaft 4. Two hydraulic rods 7 are mounted on both ends of one side of the connecting plate 6. Two connecting frames 8 are mounted on the ends of the two hydraulic rods 7 away from the connecting plate 6. Two grippers 9 are connected to both ends of the two connecting frames 8. The two connecting frames 8 and the corresponding grippers 9 are arranged symmetrically on top of each other. The inner wall of the middle part of the gripper 9 is slidably connected to the outer surface of one end of a positioning plate 10. The other end of the positioning plate 10 is mounted on one end of the clamping plate 11.

[0034] Please see Figure 1 , Figure 2 and Figure 3 The base 1 has a guide rail mechanism 18 on its top, and a soldering mechanism 19 is connected to one side of the guide rail mechanism 18. The soldering mechanism 19 is located above the clamping plate 11.

[0035] Please see Figure 1 , Figure 2 and Figure 3There are two chains 3. The inner wall of one end of the two chains 3 is connected to the outer surface of the middle part of the two rotating shafts 4 through two sprockets. The two rotating shafts 4 are located at both ends of the clamping plate 11. The outer surface of one end of the two rotating shafts 4 is rotatably set in the inner wall of one end of the two support plates 5. The inner wall of the other end of the two chains 3 is connected to the outer surface of the two motor shafts of the dual-axis motor 2 through two sprockets. The operation of the dual-axis motor 2 can drive the two chains 3 to rotate the two rotating shafts 4 synchronously, thereby synchronously flipping the two ends of the clamping plate 11 and improving the stability when flipping the clamping plate 11.

[0036] Please see Figure 1 , Figure 2 and Figure 4 Two position signal receivers 17 are provided at both ends on one side of the connecting plate 6. The two position signal receivers 17 are electrically connected to two hydraulic rods 7 on the other side of the connecting plate 6. The position signal receivers 17 are electrically connected to the position signal transmitter 16. Only after the positions of the position signal receivers 17 and the position signal transmitter 16 are aligned can the corresponding hydraulic rods 7 be controlled, which improves the accuracy of controlling the upper and lower hydraulic rods 7 separately.

[0037] Please see Figure 1 and Figure 2 The position signal transmitter 16 is located on one side of one end of the support plate 5. The position signal transmitter 16 is located above the rotating shaft 4. The position of the position signal transmitter 16 corresponds to the position of the position signal receiver 17 located above. The height setting of the position signal transmitter 16 ensures that only the hydraulic rod 7 located above the current position is controlled, avoiding the situation where the clamping plate 11 falls off due to control errors.

[0038] Please see Figure 1 , Figure 5 and Figure 6 The inner wall of the placement slot 12 is provided with a positioning frame 13. The size of the inner wall of the middle part of the positioning frame 13 is smaller than the size of the varistor sheet. The positioning frame 13 can support the varistor sheet in the placement slot 12 and prevent the varistor sheet from falling out of the placement slot 12 during the flipping and soldering process.

[0039] Please see Figure 2 , Figure 5 and Figure 6Two positioning plates 10 are provided at both ends of the clamping plate 11. The positioning plate 10 includes a male positioning plate 1001 and a female positioning plate 1002. A positioning block 15 is provided on one side of the male positioning plate 1001, and a positioning groove 14 is provided on one side of the female positioning plate 1002. The outer surface of the middle part of the positioning block 15 is inserted into the inner wall of the positioning groove 14. The size of the positioning block 15 is adapted to the size of the inner wall of the positioning groove 14. The two positioning plates 10 provided at both ends of the clamping plate 11 include two male positioning plates 1001 and two female positioning plates 1002. By inserting the positioning block 15 of the male positioning plate 1001 into the positioning groove 14 of the female positioning plate 1002, the two corresponding positioning plates 10 can be tightly combined. This prevents the clamping claw 9 from pushing the positioning plate 10 when sliding towards it, which would cause the two clamping plates 11 to move and become misaligned. It also prevents the two clamping plates 11 from moving and damaging the varistor.

[0040] Please see Figure 5 and Figure 6 The two male positioning plates 1001 on the clamping plate 11 are set diagonally opposite each other, and the two female positioning plates 1002 on the clamping plate 11 are set diagonally opposite each other. By setting the two male positioning plates 1001 and the two female positioning plates 1002 diagonally opposite each other, the two clamping plates 11 can be spliced ​​from all directions by the positioning plate 10 while being symmetrical from top to bottom. There is no need to carefully adjust and rotate the clamping plate 11 to determine the position of the male positioning plates 1001 and the female positioning plates 1002, which improves the work efficiency of splicing the clamping plates 11.

[0041] Please see 5 and Figure 6 A handle 20 is provided between the two positioning plates 10 at one end of the clamping plate 11. The two ends of the handle 20 are respectively located on the opposite side of the two positioning plates 10 at one end of the clamping plate 11. The clamping plate 11 can be easily picked up by the handle 20. After flipping, the clamping plate 11 located on the upper side can be easily removed to tin the varistor sheet placed on the clamping plate 11 on the lower side.

[0042] This embodiment of an automatic flipping device for varistor sheets uses two corresponding upper and lower grippers 9 to clamp two positioning plates 10 corresponding to two clamping plates 11. When the dual-axis motor 2 drives the rotating shaft 4 through the chain 3, it can drive the two clamping plates 11 to flip, thereby flipping the varistor sheet and the two clamping plates 11 in place. This achieves automatic flipping of the two clamping plates 11 and the varistor sheet, avoiding positional shift of the clamping plates 11 and the varistor sheet during flipping. It eliminates the need to readjust the position of the clamping plates 11 and the varistor sheet below the soldering mechanism 19, improving the working efficiency of flipping the varistor sheet and the printing accuracy of solder paste.

[0043] The working principle of the above embodiment is as follows: The varistor sheet requiring soldering is placed into the placement slot 12 on the clamping plate 11, and the varistor sheet is pressed against the positioning frame 13. The clamping plate 11 with the varistor sheet is placed below the soldering mechanism 19, and the two positioning plates 10 at both ends of the clamping plate 11 are placed inside the lower jaws 9, so that the jaws 9 support the clamping plate 11 with the varistor sheet through the positioning plates 10. The soldering mechanism 19 adjusts its height through the guide rail mechanism 18, causing the soldering mechanism 19 to move downwards to apply solder paste to the varistor sheet on the lower clamping plate 11. After one side of the varistor sheet is coated, the soldering mechanism 19 moves upward away from the clamping plate 11, and another clamping plate 11 is taken out and placed on top of the clamping plate 11 on which the varistor sheet is placed, so that the placement groove 12 of the upper clamping plate 11 fits onto the varistor sheet, and the positioning male plate 1001 of the upper clamping plate 11 is spliced ​​with the positioning female plate 1002 of the lower clamping plate 11, and the positioning female plate 1002 of the upper clamping plate 11 is spliced ​​with the positioning male plate 1001 of the lower clamping plate 11, so that the upper and lower clamping plates 11 are spliced ​​together to clamp and fix the varistor sheet, and the position signal transmitter 16 sends a signal to the position located above. The signal receiver 17 transmits a signal to power the upper hydraulic rod 7, causing the hydraulic rod 7 to push the upper connecting frame 8 towards the clamping plate 11. This causes the connecting frame 8 to push the upper gripper 9 towards the upper positioning plate 10, whereby the upper gripper 9 presses against the upper positioning plate 10. The upper gripper 9, in conjunction with the lower gripper 9, clamps and fixes the two combined positioning plates 10, thus fixing the position between the two clamping plates 11. The dual-axis motor 2 operates, driving the rotating shaft 4 to rotate via the chain 3, which in turn drives the connecting plate 6 to rotate, causing the upper... The gripper 9, in conjunction with the lower gripper 9, drives the two clamping plates 11 to flip via the positioning plate 10. This causes the two clamping plates 11 to flip the varistor sheet. After the varistor sheet is flipped, the upper hydraulic rod 7 retracts, causing the upper gripper 9 to release its grip on the upper positioning plate 10, thereby releasing the fixation on the upper clamping plate 11. By grasping the handle 20 corresponding to the upper clamping plate 11, the upper clamping plate 11 is removed from the lower clamping plate 11, exposing the upper varistor sheet. This allows the soldering mechanism 19 to apply solder paste to the flipped varistor sheet.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure sensitive resistor automatic turning device, comprising a base (1), characterized in that: The base (1) is provided with two clamping plates (11) on top. The two clamping plates (11) are arranged symmetrically on top and bottom. The two clamping plates (11) are closely fitted together. Multiple placement slots (12) are opened in the middle of the clamping plates (11). A dual-axis motor (2) is provided on the top of the base (1) through a fixing block. A chain (3) is sleeved on the outer surface of the motor shaft of the dual-axis motor (2) through a sprocket. One end of the inner wall of the chain (3) is sleeved on the outer surface of the middle part of the rotating shaft (4) through a sprocket. The outer surface of one end of the rotating shaft (4) is rotatably set in the inner wall of one end of the support plate (5). The support plate (5) Located on the top of the base (1), the other end of the rotating shaft (4) is provided with a connecting plate (6). Two hydraulic rods (7) are provided at both ends of one side of the connecting plate (6). Two connecting frames (8) are provided at the ends of the two hydraulic rods (7) away from the connecting plate (6). Two grippers (9) are connected to both ends of the two connecting frames (8). The two connecting frames (8) and the corresponding grippers (9) are arranged symmetrically up and down. The inner wall of the middle part of the gripper (9) is slidably connected to the outer surface of one end of the positioning plate (10). The other end of the positioning plate (10) is located at one end of the clamping plate (11). The base (1) is provided with a guide rail mechanism (18) on the top, and a soldering mechanism (19) is connected to one side of the guide rail mechanism (18). The soldering mechanism (19) is located above the clamping plate (11).

2. The automatic turnover device for varistor according to claim 1, wherein: There are two chains (3). The inner walls of one end of the two chains (3) are connected to the outer surface of the middle part of the two rotating shafts (4) by two sprockets. The two rotating shafts (4) are located at both ends of the clamping plate (11). The outer surfaces of one end of the two rotating shafts (4) are rotatably set in the inner wall of one end of the two support plates (5). The inner walls of the other end of the two chains (3) are connected to the outer surfaces of the two motor shafts of the dual-shaft motor (2) by two sprockets.

3. The automatic turnover device for varistor according to claim 1, wherein: Two position signal receivers (17) are provided at both ends on one side of the connecting plate (6). The two position signal receivers (17) are electrically connected to two hydraulic rods (7) on the other side of the connecting plate (6). The position signal receivers (17) are electrically connected to the position signal transmitter (16).

4. The automatic turnover device for varistor according to claim 3, wherein: The position signal transmitter (16) is disposed on one side of one end of the support plate (5). The position signal transmitter (16) is located above the rotating shaft (4). The position of the position signal transmitter (16) corresponds to the position of the position signal receiver (17) located above.

5. The automatic turnover device for varistor according to claim 1, wherein: The inner wall of the placement slot (12) is provided with a positioning frame (13), and the size of the inner wall of the middle part of the positioning frame (13) is smaller than the size of the varistor sheet.

6. The automatic turnover device for varistor according to claim 1, wherein: The clamping plate (11) has two positioning plates (10) at both ends. The positioning plate (10) includes a male positioning plate (1001) and a female positioning plate (1002). A positioning block (15) is provided on one side of the male positioning plate (1001), and a positioning groove (14) is provided on one side of the female positioning plate (1002). The outer surface of the middle part of the positioning block (15) is inserted into the inner wall of the positioning groove (14). The size of the positioning block (15) is adapted to the size of the inner wall of the positioning groove (14). The two positioning plates (10) provided at both ends of the clamping plate (11) include two male positioning plates (1001) and two female positioning plates (1002).

7. The automatic turnover device for varistor according to claim 6, wherein: The two male positioning plates (1001) on the clamping plate (11) are arranged diagonally opposite each other, and the two female positioning plates (1002) on the clamping plate (11) are arranged diagonally opposite each other.

8. The automatic turnover device for varistor according to claim 1, wherein: A handle (20) is provided between the two positioning plates (10) at one end of the clamping plate (11), and the two ends of the handle (20) are respectively located on the opposite side of the two positioning plates (10) at one end of the clamping plate (11).

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