A device and method for inspecting the bonding quality of thermally printed sheets.

Abstract

This invention relates to the field of thermal printers, specifically to a device and method for inspecting the bonding quality of thermal printed sheets. The device includes a base and a horizontal plate fixed to the base, with a clamping mechanism mounted on the base for fixing the thermal printed sheet to be inspected. The device also includes a detection plate movably mounted on the base and located below the clamping mechanism, connected to a bidirectional drive mechanism mounted on the horizontal plate. Through the cooperation of various mechanisms and components, an effective automatic inspection function for the bonding quality of thermal printed sheets is achieved. Furthermore, as the inspection progresses, the air pump gradually increases the attractive force on the printed resistance wire, ensuring a gradual inspection process and effectively preventing significant damage to the printed resistance wire, thus avoiding losses.

Description

Technical Field

[0001] This invention relates to the field of thermal printers, specifically to a device and method for inspecting the wire bonding quality of thermal printing sheets. Background Technology

[0002] The core of a thermal printer is the printing lines, which are rows of heating resistors. These resistors, theoretically all having the same resistance, are densely packed, with densities ranging from 200 dpi to 600 dpi. When a certain current passes through these resistors, they quickly generate high temperatures. Under certain pressure, when the dielectric coating comes into contact with these resistors, its temperature rises rapidly, causing a chemical reaction that reveals color. The performance of a thermal printer is closely related to the quality of its printed resistor lines; therefore, quality inspection of the printed resistor lines is an essential and crucial step in the production of thermal printers.

[0003] Nowadays, the quality inspection of printed resistance wires is usually done manually by experienced staff. Through human judgment and with the aid of a microscope, the staff uses a very fine hook to pick up the solder wire. The user applies a certain amount of force based on experience and observes whether the solder wire is broken or deformed. This can easily put a lot of burden on the staff. Therefore, some factories also equip themselves with corresponding automated inspection equipment to complete the inspection work.

[0004] Existing testing equipment typically applies a fixed external force to the printed resistance wire during operation. This results in significant damage to areas with poor quality on the printed resistance wire during testing, making subsequent repair work much more difficult and causing losses. Summary of the Invention

[0005] The purpose of this invention is to provide a wire bonding quality inspection device and method for thermal printing sheet production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A wire bonding quality inspection device for thermal printing sheet production includes a base and a horizontal plate fixed on the base, and a clamping mechanism for fixing the thermal printing sheet to be inspected is installed on the base.

[0008] The wire bonding quality testing equipment produced by the thermal printing sheet also includes:

[0009] The detection plate is movably mounted on the base and located below the fixed clamping mechanism. It is also connected to the bidirectional drive mechanism mounted on the horizontal plate. The detection plate is equipped with a pressure sensor for contacting the printing resistance line on the thermal printing sheet and transmitting the detected pressure value to the computer.

[0010] The box body is movably mounted on the horizontal plate and connected to the elastic driven mechanism mounted on the horizontal plate. The elastic driven mechanism cooperates with the bidirectional drive mechanism. The upper part of the box body is provided with a strip-shaped air vent and is connected to the air inlet of an air pump mounted on the base through a hose. The drive shaft of the air pump is connected to the bidirectional drive mechanism through a transmission mechanism.

[0011] As a further embodiment of the present invention: the bidirectional drive mechanism includes a second lead screw rotatably mounted on the horizontal plate, a long rod fixed on the horizontal plate, and a transverse plate disposed on the second lead screw and threadedly connected to the second lead screw;

[0012] The long rod passes through the transverse plate and is slidably connected to it. A drive motor is also installed on one side of the transverse plate. The output end of the drive motor is connected to one end of the second lead screw, and the end of the second lead screw away from the drive motor is connected to the transmission mechanism.

[0013] As a further embodiment of the present invention: two fixed seats are also fixed on the base, and a telescopic rod is slidably provided in each of the two fixed seats; the detection plate is fixedly installed at the end of the two telescopic rods away from the base.

[0014] A driven rod is fixedly connected between the two telescopic rods. The driven rod has a through groove. A column is fixed to the side of the transverse plate facing the driven rod. The column passes through the through groove and is slidably connected to the driven rod. The through groove includes connected inclined sections and straight sections.

[0015] As a further embodiment of the present invention: the elastic driven mechanism includes a first crossbar fixed to the cross plate by a first protrusion and a slider slidably disposed on the first crossbar and fixedly connected to the box body by a fixing rod;

[0016] The first crossbar is fitted with a first cylindrical spring on its outer periphery. The two ends of the first cylindrical spring are respectively connected to the first protrusion and the slider. The crossbar is also provided with a strip-shaped through groove. The slider is slidably placed in the strip-shaped through groove and cooperates with the protrusion formed on the upper part of the crossbar.

[0017] As a further embodiment of the present invention: the transmission mechanism includes a rotating shaft movably disposed on the base and a plurality of arc-shaped groove plates movably disposed on the outer periphery of the rotating shaft. The plurality of arc-shaped groove plates are equidistantly distributed along the circumference and are connected to the drive shaft of the air pump through a fourth transmission belt.

[0018] The rotating shaft is connected to the second lead screw at one end facing the horizontal plate via a connecting component, and the other end is connected to an elastic movable component mounted on the base. The arc-shaped groove plate is connected to a one-way triggering component, which is triggered during the movement of the horizontal plate toward the air pump.

[0019] As a further embodiment of the present invention: the elastic movable component includes two second crossbars fixed to the base by two second protrusions, an assembly plate slidably disposed on the two second crossbars, and two second cylindrical springs respectively sleeved on the outer periphery of the two second crossbars.

[0020] One end of the second cylindrical spring is connected to the assembly plate, and the other end is connected to the second protrusion block, and the rotating shaft is rotatably mounted on the assembly plate.

[0021] As a further embodiment of the present invention: the one-way triggering component includes a transmission plate slidably disposed on the base, a third lead screw rotatably mounted on the base, and a sleeve slidably sleeved on the rotating shaft;

[0022] The rotating shaft is fixed with a disc, and multiple guide plates are equidistantly arranged on the outer wall of the disc along the circumference. A sliding sleeve plate fixedly connected to the arc-shaped groove plate is slidably sleeved on the guide plate, and a push-pull rod is connected between the sliding sleeve plate and the sleeve. The two ends of the push-pull rod are respectively hinged to the sliding sleeve plate and the sleeve.

[0023] The third lead screw is also fitted with a connecting pipe fixed to the transmission plate. The connecting pipe is threadedly connected to the third lead screw. The transmission plate is provided with a sliding groove, and a sliding plate is slidably provided in the sliding groove. The sliding plate is rotatably connected to the sleeve.

[0024] One end of the third lead screw is fixed with a reset knob, and the other end is connected to the rotating shaft of the ratchet that is rotatably mounted on the base through a transmission component. A long bar is fixed on the side of the transverse plate facing the ratchet. The bottom of the long bar is provided with multiple inclined grooves at equal intervals along the length direction. A pawl that cooperates with the ratchet is hinged in each of the inclined grooves.

[0025] As a further embodiment of the present invention: the connecting assembly includes a first connecting rod rotatably mounted on the second lead screw and a second connecting rod rotatably mounted on the rotating shaft. The end of the first connecting rod away from the second lead screw and the end of the second connecting rod away from the rotating shaft are rotatably connected by a connecting shaft. The connecting shaft is connected to the second lead screw via a first transmission belt and is also connected to the rotating shaft via a second transmission belt.

[0026] A method for inspecting the quality of bonding wires produced by thermal printing using the aforementioned inspection equipment includes the following steps:

[0027] Step 1: Use the clamping mechanism to fix the thermal print sheet to be tested, and control the clamping mechanism to drive the thermal print sheet down so that the printed resistance wire contacts the detection plate;

[0028] Step two: The detection board sends the detected pressure value information to the computer for storage;

[0029] Step 3: The bidirectional drive mechanism moves forward, driving the detection plate to move downward and causing the elastic driven mechanism to move the box body to below the printed resistance line, where the air pump attracts the printed resistance line.

[0030] Step four: The bidirectional drive mechanism moves in the opposite direction, driving each component to reset. The detection board then sends the detected pressure value information to the computer for storage and comparison.

[0031] Step 5: If there is a discrepancy in the comparison results, remove the thermal print sheet and end the test. If there is no discrepancy in the comparison results, the air pump provides a greater suction force to conduct the next round of testing.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention has a novel design. The bidirectional drive mechanism operates in the forward direction, first driving the detection plate to move downward to make way, and then cooperating with the elastic follower mechanism, causing the elastic follower mechanism to drive the cartridge to move below the printed resistance line. At this time, the bidirectional drive mechanism drives the air pump to work through the transmission mechanism. The air pump can then attract the printed resistance line through the hose and the cartridge, thereby affecting the poor quality parts of the printed resistance line, causing them to sag and loosen. The bidirectional drive mechanism operates in the reverse direction. The elastic driven mechanism first drives the housing to reset and retract from below the printed resistance line. Then, the detection plate rises and resets again for a second detection. At this time, the computer receives two sets of pressure values. After comparison, the printed resistance line with a large and obvious deviation has a quality problem. Through the cooperation between various mechanisms and components, an effective automatic detection function for the quality of the thermal printing sheet bonding wire is realized. Moreover, as the detection progresses, the air pump gradually increases the attraction force of the printed resistance line, making the detection process gradual and effectively avoiding significant damage to the printed resistance line and preventing losses. Attached Figure Description

[0033] Figure 1 A schematic diagram of one embodiment of a wire bonding quality inspection device for thermal printing sheet production.

[0034] Figure 2 A schematic diagram of another aspect of an embodiment of a wire bonding quality inspection device for thermal printing sheet production.

[0035] Figure 3 A schematic diagram of the structure from another angle of one embodiment of a wire bonding quality inspection device for thermal printing sheet production.

[0036] Figure 4 for Figure 1 Enlarged view of the structure at point A in the middle.

[0037] Figure 5 for Figure 2 Enlarged view of the structure at point B.

[0038] Figure 6 for Figure 3 Enlarged view of the structure at point C.

[0039] Figure 7 A schematic diagram showing the connection relationship between the detection board and the bidirectional drive mechanism in one embodiment of a wire bonding quality inspection device for thermal printing sheet production.

[0040] Figure 8 A schematic diagram illustrating the cooperation relationship between the elastic driven mechanism and the bidirectional drive mechanism in one embodiment of a wire bonding quality inspection device for thermal printing sheet production.

[0041] Figure 9 An exploded view of the transmission mechanism in one embodiment of a wire bonding quality inspection device for thermal printing sheet production.

[0042] In the diagram: 1. Base; 2. Horizontal plate; 201. Strip groove; 3. First lead screw; 4. Guide rod; 5. Lifting plate; 6. Cylinder; 7. Detection plate; 8. Box body; 9. Hose; 10. Air pump; 11. Second lead screw; 12. Long rod; 13. Horizontal plate; 1301. Column; 1302. Protrusion; 14. Fixed seat; 15. Telescopic rod; 16. Driven rod; 1601. Inclined section; 1602. Straight section; 17. First protrusion; 18. First crossbar; 1801. First cylindrical spring; 19. Slider; 20. Fixed rod; 21. Second protrusion; 22. Second crossbar; 2201. 23. Second cylindrical spring; 24. Assembly plate; 25. Rotary shaft; 26. Sleeve; 27. Push-pull rod; 28. Disc; 29. ​​Guide plate; 20. Sliding sleeve; 21. Arc-shaped groove plate; 22. First connecting rod; 33. Second connecting rod; 34. Connecting shaft; 35. First transmission belt; 36. Second transmission belt; 37. Transmission plate; 38. Slide plate; 39. Third lead screw; 30. Connecting pipe; 31. Reset knob; 32. Transmission shaft; 33. Long bar; 34. Ratchet; 35. Bevel gear set; 36. Third transmission belt; 37. Fourth transmission belt. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0045] In this embodiment of the invention, a wire bonding quality inspection device for thermal printing sheet production includes a base 1, a vertical plate 2 fixed on the base 1, a clamping mechanism installed on the base 1 for fixing the thermal printing sheet to be inspected, an inspection plate 7, a bidirectional driving mechanism, a box 8, an elastic driven mechanism, and a transmission mechanism.

[0046] The bidirectional drive mechanism can reciprocate along the length of the horizontal plate 2. When the bidirectional drive mechanism moves to one side, it can drive the detection plate 7 to descend and cooperate with the elastic driven mechanism to move the box 8 under the thermal printing sheet to attract the printing resistance line. When the bidirectional drive mechanism moves to the other side, it can drive the box 8 and the detection plate 7 to reset sequentially so that the computer can compare the pressure values ​​detected by the detection plate 7 twice. The transmission mechanism moves during the reset of the box 8 and the detection plate 7. The upper part of the box 8 is provided with a strip-shaped air vent and is connected to the air inlet of the air pump 10 installed on the base 1 through a hose 9.

[0047] In summary, through the cooperation between various mechanisms and components, an effective automatic detection function for the bonding quality of thermal printing sheets is achieved. Furthermore, the external force (i.e., the attraction force of the air pump 10 on the printing resistance wire) can be automatically increased according to the progress of the detection, effectively reducing the burden on the staff.

[0048] It should be emphasized that if a single-round testing method is adopted, that is, the transmission efficiency of the bidirectional drive mechanism to the air pump 10 is kept constant and sufficiently large, then the printed resistance wires that may not pass through in the first few rounds may fall off directly due to the excessive attraction of the air pump 10, which will undoubtedly increase the difficulty of subsequent repairs.

[0049] Specifically, see Figures 1-9 The following is a detailed introduction:

[0050] The detection plate 7 is equipped with multiple pressure sensors arranged in a matrix. In order to ensure the accuracy of the detection and to ensure a clear comparison of the pressure values ​​on both sides, it is advisable to select ultra-high precision pressure sensors.

[0051] Secondly, the clamping mechanism includes a first lead screw 3 rotatably mounted on the base 1, two guide rods 4 fixed to the base 1 and located on both sides of the first lead screw 3, and a lifting plate 5 slidably disposed on the two guide rods 4;

[0052] The lifting plate 5 has two cylinders 6 facing each other, and the movable ends of the two cylinders 6 are respectively fixed with a clamping head for clamping the thermal printing sheet to be tested. The first lead screw 3 passes through the lifting plate 5 and is threadedly connected to it.

[0053] The detection plate 7 is movably mounted on the base 1 and located below the fixed clamping mechanism. It is also connected to the bidirectional drive mechanism mounted on the horizontal plate 2. The detection plate 7 is equipped with a pressure sensor for contacting the printing resistance line on the thermal printing sheet and transmitting the detected pressure value to the computer.

[0054] Secondly, the box body 8 is movably mounted on the horizontal plate 2 and connected to the elastic driven mechanism mounted on the horizontal plate 2. The elastic driven mechanism cooperates with the bidirectional drive mechanism, and the transmission mechanism is respectively connected to the drive shaft of the air pump 10 and the bidirectional drive mechanism.

[0055] In actual use, the thermal printing sheet to be tested can be clamped and fixed on the lifting plate 5 by the two cylinders 6. Then, the first lead screw 3 is rotated, and under the guidance of the two guide rods 4, the lifting plate 5 will gradually move down by engaging with the first lead screw 3 until the printing resistance line on the thermal printing sheet contacts the surface of the detection plate 7, and the computer can obtain the corresponding pressure value, and at this time the computer records the pressure value.

[0056] Subsequently, the bidirectional drive mechanism operates in the forward direction, first driving the detection plate 7 to move downward to make way, and then cooperating with the elastic follower mechanism, so that the elastic follower mechanism drives the box body 8 to move below the printed resistance line. At this time, the bidirectional drive mechanism drives the air pump 10 to work through the transmission mechanism. The air pump 10 can then attract the printed resistance line through the hose 9 and the box body 8. As a result, the parts of the printed resistance line that are not up to standard will be affected accordingly, and the phenomenon of falling and loosening will occur.

[0057] Subsequently, the bidirectional drive mechanism works in reverse. The elastic driven mechanism first drives the box 8 to reset and withdraw from below the printed resistance line. Then, the detection plate 7 rises and resets again to perform a second detection. At this time, the computer will receive two sets of pressure values. After comparison, the printed resistance line with a large and obvious deviation has a quality problem.

[0058] It should be noted that the transmission mechanism moves during the reset process of the housing 8 and the detection plate 7, which improves the transmission efficiency of the bidirectional drive mechanism to the air pump 10.

[0059] The above process is the first round of testing. If the first round of testing is passed, the bidirectional drive mechanism will repeat the above process again. However, in this process, the transmission efficiency of the bidirectional drive mechanism to the air pump 10 is improved, thereby increasing the attraction of the air pump 10 to the printing resistance line.

[0060] The above process is the second round of testing. If the second round of testing passes, it can be repeated. After several rounds of testing, if the pressure value data obtained by the computer shows no significant difference, it indicates that the quality of the wire bonding is qualified.

[0061] In detail, the operation of the bidirectional drive mechanism is controlled by a computer. If the computer finds a significant difference between the two sets of pressure data through comparison, it will terminate the secondary movement of the bidirectional drive mechanism, automatically avoiding the next round of detection and preventing the next round of detection from causing further damage to the printed resistance wire and increasing the difficulty of subsequent repair work.

[0062] Furthermore, when the printing resistor wire becomes loose and droops due to the suction of the air pump 10, the drooping part will shift in position due to the support of the detection plate 7 during the secondary pressure test, which will lead to an increase in the pressure value measured by the adjacent part.

[0063] Please refer to it again. Figure 1 and Figure 7 The bidirectional drive mechanism includes a second lead screw 11 rotatably mounted on the horizontal plate 2, a long rod 12 fixed on the horizontal plate 2, and a transverse sliding plate 13 disposed on and threadedly connected to the second lead screw 11. The long rod 12 passes through the transverse sliding plate 13 and is slidably connected to it. A drive motor is also mounted on one side of the horizontal plate 2. The output end of the drive motor is connected to one end of the second lead screw 11, and the end of the second lead screw 11 away from the drive motor is connected to the transmission mechanism.

[0064] It should be noted that the drive motor (not labeled in the figure) must be a servo motor with bidirectional drive capability at the output end. This application does not specify the specific model. In actual testing, the drive motor completes one round of testing by completing one forward and reverse operation.

[0065] Two fixed seats 14 are also fixed on the base 1, and a telescopic rod 15 is slidably provided in each of the two fixed seats 14. The detection plate 7 is fixedly installed at the end of the two telescopic rods 15 away from the base 1. A driven rod 16 is also fixedly connected between the two telescopic rods 15. The driven rod 16 is provided with a through groove. A column 1301 is fixed on the side of the transverse plate 13 facing the driven rod 16. The column 1301 passes through the through groove and is slidably connected to the driven rod 16. The through groove includes a connected inclined section 1601 and a straight section 1602.

[0066] Please refer to it again. Figure 2 , Figure 7 as well as Figure 8The elastic driven mechanism includes a first crossbar 18 fixed to the cross plate 2 by a first protrusion 17 and a slider 19 slidably disposed on the first crossbar 18 and fixedly connected to the box body 8 by a fixing rod 20. A first cylindrical spring 1801 is sleeved on the outer periphery of the first crossbar 18. The two ends of the first cylindrical spring 1801 are respectively connected to the first protrusion 17 and the slider 19. A strip-shaped through groove 201 is also provided on the cross plate 2. The slider 19 is slidably placed in the strip-shaped through groove 201 and cooperates with the protrusion 1302 formed on the upper part of the transverse plate 13.

[0067] When the drive motor drives the second lead screw 11 to rotate in the forward direction, under the guidance of the long rod 12, the transverse plate 13 engages with the second lead screw 11 and moves away from the air pump 10. Correspondingly, the column 1301 slides along the inclined section 1601, which causes the telescopic rod 15 to slide down and the detection plate 7 to descend. After the column 1301 slides into the straight section 1602, the detection plate 7 maintains its current height. At this time, the protrusion 1302 disengages from the slider 19. Then, the protrusion 1302 pushes the slider 19 to gradually slide towards the first protrusion 17 on the first crossbar 18. The first columnar spring 1801 is compressed, and the box 8 moves together with the slider 19 through the fixing rod 20 and gradually passes under the printed resistance line to attract the printed resistance line.

[0068] Subsequently, the drive motor drives the second lead screw 11 to rotate in the opposite direction, and the transverse plate 13 moves toward the air pump 10. Correspondingly, the column 1301 will first slide along the straight section 1602. At this time, the first column spring 1801 rebounds, causing the slider 19 to drive the box 8 to reset through the fixed rod 20. When the column 1301 slides along the inclined section 1601, the driven rod 16 will move upward, thereby causing the detection plate 7 to rise and reset, and perform pressure detection on the printed resistance line that has been attracted.

[0069] Please refer to it again. Figure 4 , Figure 5 , Figure 6 as well as Figure 9The transmission mechanism includes a rotating shaft 24 movably mounted on the base 1 and a plurality of arc-shaped groove plates 2503 movably mounted on the outer periphery of the rotating shaft 24. The plurality of arc-shaped groove plates 2503 are equidistantly distributed along the circumference and are connected to the drive shaft of the air pump 10 via a fourth transmission belt 38. One end of the rotating shaft 24 facing the horizontal plate 2 is connected to the second lead screw 11 via a connecting assembly, and the other end is connected to an elastic movable assembly mounted on the base 1. The arc-shaped groove plates 2503 are connected to a one-way trigger assembly, which is triggered during the movement of the horizontal plate 13 toward the air pump 10.

[0070] The elastic movable component includes two second crossbars 22 fixed to the base 1 by two second protrusions 21, an assembly plate 23 slidably disposed on the two second crossbars 22, and two second columnar springs 2201 respectively sleeved on the outer periphery of the two second crossbars 22. One end of the second columnar spring 2201 is connected to the assembly plate 23, and the other end is connected to the second protrusions 21. The rotating shaft 24 is rotatably mounted on the assembly plate 23.

[0071] The one-way triggering assembly includes a transmission plate 31 slidably disposed on the base 1, a third lead screw 32 rotatably mounted on the base 1, and a sleeve 2401 slidably sleeved on the rotating shaft 24. A disc 25 is fixed on the rotating shaft 24. Multiple guide plates 2501 are equidistantly disposed along the circumference on the outer wall of the disc 25. A sliding sleeve plate 2502 fixedly connected to the arc-shaped groove plate 2503 is slidably sleeved on the guide plate 2501. A push-pull rod 2402 is connected between the sliding sleeve plate 2502 and the sleeve 2401. The two ends of the push-pull rod 2402 are respectively hinged to the sliding sleeve plate 2502 and the sleeve 2401.

[0072] The third lead screw 32 is also fitted with a connecting pipe 3201 fixed to the transmission plate 31. The connecting pipe 3201 is threadedly connected to the third lead screw 32. The transmission plate 31 is provided with a sliding groove 3101. A sliding plate 3102 is slidably provided in the sliding groove 3101. The sliding plate 3102 is rotatably connected to the sleeve 2401. One end of the third lead screw 32 is fixed with a reset knob 3202. The other end is connected to the rotating shaft of the ratchet 35 rotatably mounted on the base 1 through a transmission component. A long bar 34 is fixed on the side of the transverse plate 13 facing the ratchet 35. The bottom of the long bar 34 is provided with multiple inclined grooves at equal intervals along the length direction. A pawl that cooperates with the ratchet 35 is hinged in each inclined groove.

[0073] In detail, the transmission component includes a transmission shaft 33 rotatably mounted on the base 1. One end of the transmission shaft 33 is connected to the third lead screw 32 via a third transmission belt 37, and the other end is connected to the rotating shaft of the ratchet 35 via a bevel gear set 36.

[0074] Secondly, the bevel gear set 36 includes a first bevel gear fixedly mounted coaxially with the ratchet 35 and a second bevel gear fixed to one end of the transmission shaft 33 away from the third lead screw 32, and the second bevel gear meshes with the first bevel gear.

[0075] During the initial phase of the movement of the transverse plate 13 away from the air pump 10, the long rod 34 passes the ratchet 35. During this process, the pawl at the bottom of the long rod 34 rotates upon contact with the ratchet 35, while the ratchet 35 remains stationary. Later, as the transverse plate 13 moves towards the air pump 10 (at which point the housing 8 has reset and is misaligned with the printing resistor line), the pawl at the bottom of the long rod 34 passes the ratchet 35. The inclined groove at the bottom of the long rod 34 limits the pawl's movement, preventing it from rotating. The pawl then drives the ratchet 35 to rotate. The rotation axis of the ratchet 35, along with the bevel gear set 36, drives the transmission shaft 33 to rotate. The transmission shaft 33, through the third transmission belt 37, drives the third lead screw 32 to rotate. The connecting pipe 3201 engages with the third lead screw 32 to drive the transmission plate 31, the sliding plate 3102, and the sleeve 2401 away from the assembly plate 23. Correspondingly, the sleeve 2401 pushes the sliding sleeve 2502 to slide away from the rotating shaft 24 on the guide plate 2501 via the push-pull rod 2402. The multiple arc-shaped groove plates 2503 expand, and the rotating shaft 24 moves closer to the air pump 10 by a certain distance. The assembly plate 23 slides a distance toward the second protrusion 21 on the two second crossbars 22. The second columnar spring 2201 is compressed to ensure that the fourth transmission belt 38 can remain taut. In this way, with a constant power of the drive motor, the attraction of the air pump 10 to the printed resistance line gradually increases in each round of detection.

[0076] When a quality defect is detected during testing, the thermal printing sheet should be removed and replaced with a new one for testing. Before testing, the third lead screw 32 can be rotated using the reset knob 3202, so that the connecting pipe 3201 engages with the third lead screw 32, causing the transmission plate 31, slide plate 3102, and sleeve 2401 to move toward the assembly plate 23. This allows the sleeve 2401 to push the sliding sleeve 2502 onto the guide plate 2501 and slide toward the rotating shaft 24 via the push-pull rod 2402. The multiple arc-shaped groove plates 2503 retract, reducing the suction force generated by the air pump 10 to the standard of the first round of testing.

[0077] The connecting assembly includes a first connecting rod 26 rotatably mounted on the second lead screw 11 and a second connecting rod 27 rotatably mounted on the rotating shaft 24. The end of the first connecting rod 26 away from the second lead screw 11 and the end of the second connecting rod 27 away from the rotating shaft 24 are rotatably connected by a connecting shaft 28. The connecting shaft 28 is connected to the second lead screw 11 via a first transmission belt 29 and is also connected to the rotating shaft 24 via a second transmission belt 30.

[0078] During the testing process, the second lead screw 11 rotates, which can drive the connecting shaft 28 to rotate via the first transmission belt 29. The connecting shaft 28 then drives the rotating shaft 24 to rotate via the second transmission belt 30. As a result, the multiple arc-shaped groove plates 2503 perform circular motion and drive the air pump 10 to work via the fourth transmission belt 38.

[0079] As the multiple arc-shaped groove plates 2503 expand or contract, the position of the rotating shaft 24 changes, and thus, the first connecting rod 26 and the second connecting rod 27 will rotate relative to each other through the connecting shaft 28. Specifically, when the multiple arc-shaped groove plates 2503 expand, the included angle between the first connecting rod 26 and the second connecting rod 27 decreases, and conversely, when the multiple arc-shaped groove plates 2503 contract, the included angle between the first connecting rod 26 and the second connecting rod 27 increases.

[0080] As another embodiment of the present invention, a method for inspecting the bonding quality of thermal printing sheets using the aforementioned inspection equipment is also proposed, comprising the following steps:

[0081] Step 1: Use the clamping mechanism to fix the thermal print sheet to be tested, and control the clamping mechanism to drive the thermal print sheet down so that the printed resistance line contacts the detection plate 7;

[0082] Step 2: The detection board 7 sends the detected pressure value information to the computer for storage;

[0083] Step 3: The bidirectional drive mechanism moves forward, causing the detection plate 7 to move downward and causing the elastic driven mechanism to move the box 8 to below the printed resistance line, where the air pump 10 attracts the printed resistance line.

[0084] Step four: The bidirectional drive mechanism moves in the opposite direction, driving each component to reset. The detection plate 7 then sends the pressure value information detected at this time to the computer for storage and comparison.

[0085] Step 5: If there is a discrepancy in the comparison results, remove the thermal print sheet and end the test. If there is no discrepancy in the comparison results, the air pump 10 provides a greater suction force to conduct the next round of testing.

[0086] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0087] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wire bonding quality inspection device for thermal printing sheet production, comprising a base (1) and a horizontal plate (2) fixed on the base (1), wherein a clamping mechanism for fixing the thermal printing sheet to be inspected is installed on the base (1); Its features are, Also includes: The detection plate (7) is movably mounted on the base (1) and located below the clamping mechanism. It is also connected to the bidirectional drive mechanism mounted on the horizontal plate (2). The detection plate (7) is equipped with a pressure sensor for contacting the printing resistance line on the thermal printing sheet and transmitting the detected pressure value to the computer. The box body (8) is movably mounted on the horizontal plate (2) and connected to the elastic driven mechanism mounted on the horizontal plate (2). The elastic driven mechanism cooperates with the bidirectional drive mechanism. The upper part of the box body (8) is provided with a strip-shaped air vent and is connected to the air inlet of the air pump (10) mounted on the base (1) through a hose (9). The drive shaft of the air pump (10) is connected to the bidirectional drive mechanism through a transmission mechanism. The bidirectional drive mechanism can reciprocate along the length of the horizontal plate (2). When the bidirectional drive mechanism moves to one side, it can drive the detection plate (7) to descend and cooperate with the elastic driven mechanism to move the box (8) to the underside of the thermal printing sheet to attract the printing resistance line. When the bidirectional drive mechanism moves to the other side, it can drive the box (8) and the detection plate (7) to reset sequentially so that the computer can compare the pressure values ​​detected by the detection plate (7) twice. The transmission mechanism can move during the reset of the box (8) and the detection plate (7) and the attraction of the air pump (10) to the printing resistance line gradually increases according to the progress of the detection.

2. The wire bonding quality inspection equipment for thermal printing sheet production according to claim 1, characterized in that, The bidirectional drive mechanism includes a second lead screw (11) rotatably mounted on the horizontal plate (2), a long rod (12) fixed on the horizontal plate (2), and a transverse plate (13) provided on the second lead screw (11) and threadedly connected to the second lead screw (11). The long rod (12) passes through the transverse plate (13) and is slidably connected to it. A drive motor is also installed on one side of the transverse plate (2). The output end of the drive motor is connected to one end of the second lead screw (11). The end of the second lead screw (11) away from the drive motor is connected to the transmission mechanism.

3. The wire bonding quality inspection equipment for thermal printing sheet production according to claim 2, characterized in that, Two fixed seats (14) are also fixed on the base (1), and a telescopic rod (15) is slidably provided in each of the two fixed seats (14). The detection plate (7) is fixedly installed at the end of the two telescopic rods (15) away from the base (1). A driven rod (16) is fixedly connected between the two telescopic rods (15). The driven rod (16) is provided with a through groove. A column (1301) is fixed on the side of the transverse plate (13) facing the driven rod (16). The column (1301) passes through the through groove and is slidably connected to the driven rod (16). The through groove includes an inclined section (1601) and a straight section (1602) connected together.

4. The wire bonding quality inspection equipment for thermal printing sheet production according to claim 2, characterized in that, The elastic driven mechanism includes a first crossbar (18) fixed to the cross plate (2) by a first protrusion (17) and a slider (19) slidably disposed on the first crossbar (18) and fixedly connected to the box body (8) by a fixing rod (20). The first crossbar (18) is fitted with a first cylindrical spring (1801) on its outer periphery. The two ends of the first cylindrical spring (1801) are respectively connected to the first protrusion (17) and the slider (19). The cross plate (2) is also provided with a strip-shaped through groove (201). The slider (19) is slidably placed in the strip-shaped through groove (201) and cooperates with the protrusion (1302) formed on the upper part of the transverse plate (13).

5. The wire bonding quality inspection equipment for thermal printing sheet production according to claim 2, characterized in that, The transmission mechanism includes a rotating shaft (24) movably mounted on the base (1) and a plurality of arc-shaped groove plates (2503) movably mounted on the outer periphery of the rotating shaft (24). The plurality of arc-shaped groove plates (2503) are equidistantly distributed along the circumference and are connected to the drive shaft of the air pump (10) via a fourth transmission belt (38). The rotating shaft (24) is connected to the second lead screw (11) at one end facing the horizontal plate (2) via a connecting component, and the other end is connected to an elastic movable component installed on the base (1). The arc-shaped groove plate (2503) is connected to a one-way triggering component, which is triggered during the movement of the horizontal plate (13) toward the air pump (10).

6. The wire bonding quality inspection equipment for thermal printing sheet production according to claim 5, characterized in that, The elastic movable component includes two second crossbars (22) fixed to the base (1) by two second protrusions (21), an assembly plate (23) slidably disposed on the two second crossbars (22), and two second columnar springs (2201) respectively sleeved on the outer periphery of the two second crossbars (22). One end of the second columnar spring (2201) is connected to the assembly plate (23), and the other end is connected to the second protrusion (21). The rotating shaft (24) is rotatably mounted on the assembly plate (23).

7. The wire bonding quality inspection equipment for thermal printing sheet production according to claim 6, characterized in that, The one-way triggering assembly includes a transmission plate (31) slidably disposed on the base (1), a third lead screw (32) rotatably mounted on the base (1), and a sleeve (2401) slidably sleeved on the rotating shaft (24). The rotating shaft (24) is fixed with a disc (25). Multiple guide plates (2501) are provided at equal intervals along the circumference on the outer wall of the disc (25). A sliding sleeve plate (2502) fixedly connected to the arc-shaped groove plate (2503) is slidably sleeved on the guide plate (2501). A push-pull rod (2402) is connected between the sliding sleeve plate (2502) and the sleeve (2401). The two ends of the push-pull rod (2402) are respectively hinged to the sliding sleeve plate (2502) and the sleeve (2401).

8. The wire bonding quality inspection equipment for thermal printing sheet production according to claim 7, characterized in that, The third lead screw (32) is also fitted with a connecting pipe (3201) fixed to the transmission plate (31). The connecting pipe (3201) is threadedly connected to the third lead screw (32). The transmission plate (31) is provided with a sliding groove (3101). A sliding plate (3102) is slidably provided in the sliding groove (3101). The sliding plate (3102) is rotatably connected to the sleeve (2401). One end of the third lead screw (32) is fixed with a reset knob (3202), and the other end is connected to the rotating shaft of the ratchet (35) rotatably mounted on the base (1) through a transmission component. A long bar (34) is fixed on the side of the transverse plate (13) facing the ratchet (35). The bottom of the long bar (34) is provided with multiple inclined grooves at equal intervals along the length direction. Each inclined groove is hinged with a pawl that cooperates with the ratchet (35).

9. The wire bonding quality inspection equipment for thermal printing sheet production according to claim 8, characterized in that, The connecting assembly includes a first connecting rod (26) rotatably mounted on the second lead screw (11) and a second connecting rod (27) rotatably mounted on the rotating shaft (24). The end of the first connecting rod (26) away from the second lead screw (11) and the end of the second connecting rod (27) away from the rotating shaft (24) are rotatably connected by a connecting shaft (28). The connecting shaft (28) is connected to the second lead screw (11) via a first transmission belt (29) and is also connected to the rotating shaft (24) via a second transmission belt (30).

10. A method for inspecting the quality of bonding wires produced by thermal printing sheets using the inspection equipment as described in claim 1, characterized in that, Includes the following steps: Step 1: Use the clamping mechanism to fix the thermal print sheet to be tested, and control the clamping mechanism to drive the thermal print sheet down so that the printed resistance line contacts the detection plate (7); Step 2: The detection board (7) sends the detected pressure value information to the computer for storage; Step 3: The bidirectional drive mechanism moves forward, driving the detection plate (7) to move downward, and causing the elastic driven mechanism to move the box (8) to below the printed resistance line, where the air pump (10) attracts the printed resistance line. Step four, the bidirectional drive mechanism moves in the opposite direction, driving each component to reset, and the detection plate (7) sends the pressure value information detected at this time to the computer for storage and comparison; Step 5: If there is a deviation in the comparison result, remove the thermal print sheet and end the test. If there is no deviation in the comparison result, the air pump (10) provides a greater attraction force to carry out the next round of testing.

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