Dispensing device and dispensing method for improving air tightness of plastic coated part through dispensing

Abstract

The invention discloses an adhesive dispensing device and an adhesive dispensing method for improving the air tightness of a plastic coated part through adhesive dispensing, and relates to the technical field of adhesive dispensing devices. The device comprises a base, a moving plate is arranged on one side of the base, an adjusting plate is slidably arranged on one side of the moving plate, a workpiece is arranged on the base, a fixing seat is fixedly connected to the top of the adjusting plate, an adjusting part is installed in the fixing seat, and a shell is installed on one side of the fixing seat. According to the glue dispensing device, the driving piece and the linkage piece are arranged, the driving piece is started to operate to drive the push rod to move in a reciprocating mode, the bottom end of the push rod can push glue conveyed into the linkage bin through the glue conveying pipe to be extruded out, glue dispensing operation on a workpiece is achieved, and along with circulating reciprocating movement of the push rod, a fixing piece can drive the linkage piece to operate; and the impeller rotates intermittently in the glue storage bin, glue in the glue storage bin is conveyed into the linkage bin according to the fixed amount, and therefore it can be ensured that the glue amount extruded every time is uniform and fixed, and effective control is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of glue dispensing devices, and in particular to a glue dispensing device and a glue dispensing method for improving the air tightness of a plastic package by glue dispensing. Background Art

[0002] Plastic-coated parts are widely used in new energy fields such as motors and electronic controls. The products have airtightness requirements. Due to the inconsistent shrinkage properties of copper busbars and plastics, there will be a tiny gap between the copper busbars and the plastic after cooling. When the product is in a high-pressure environment, air leakage will occur, affecting the performance of the entire machine. Therefore, by filling the connection area between the plastic and the copper busbar with glue, the gas flow can be blocked to meet the airtightness requirements.

[0003] In the existing processing of overmolded parts, in order to avoid air leakage between the copper busbar and the plastic, it is usually necessary to manually squeeze and apply the glue carefully to the connection area. Through precise dispensing operations, not only can the structural strength and stability of the overmolded parts be effectively enhanced, but also its overall aesthetics and durability can be significantly improved, laying a solid foundation for subsequent processing and use.

[0004] However, during the processing of overmolded parts, when dispensing glue on the connection area of ​​plastic and copper busbar, the amount of glue squeezed out by the staff each time is generally uneven and fixed, making it difficult to achieve effective control. Too much or too little glue may have an adverse effect on the bonding effect and appearance quality of the product, resulting in product defects, affecting product quality and production efficiency. For this reason, the present application provides a dispensing device and a dispensing method for improving the airtightness of overmolded parts by dispensing glue. Summary of the invention

[0005] The purpose of this application is to solve the problem that too much or too little glue may have an adverse effect on the bonding effect and appearance quality of the product, causing product defects, and affecting product quality and production efficiency. This application provides a glue dispensing device and a glue dispensing method for improving the airtightness of plastic parts by glue dispensing.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A glue dispensing device and a glue dispensing method for improving the air tightness of a plastic package by glue dispensing, comprising a base, a movable plate is provided on one side of the base, an adjusting plate is slidably provided on one side of the movable plate, a workpiece is provided on the base, a fixed seat is fixedly connected to the top of the adjusting plate, an adjusting member is installed inside the fixed seat, a shell is installed on one side of the fixed seat, a glue storage bin is fixedly connected to the inside of the shell, a cavity is provided inside the shell, a linkage bin is provided inside the shell, a glue delivery pipe is fixedly connected to the bottom of the glue storage bin, the other end of the glue delivery pipe is fixedly connected to the linkage bin, the cavity is through-connected to the linkage bin, a fixed plate is fixedly connected to the inside of the linkage bin, a rotating shaft 1 is rotatably connected to the inside of the cavity, and a fixed shaft 1 is fixed on the rotating shaft 1 The cam is fixedly connected, a rotating rod is fixedly connected in the cavity, a connecting plate is rotatably connected on the rotating rod, two ends of the connecting plate are respectively located in the cavity and the linkage bin, a driving part is installed inside the cavity, a push rod is slidably connected through the fixed plate, a fixing plate is fixedly connected on the push rod, a spring 1 is sleeved on the push rod, the top of the spring 1 is fixedly connected to the bottom of the fixing plate, the bottom of the spring 1 is fixedly connected to the top of the fixing plate, a liquid outlet pipe is fixedly connected through the bottom of the linkage bin, a built-in groove is provided inside the shell, a linkage part is installed in the built-in groove, a connecting rod is rotatably connected through the inside of the glue storage bin, an impeller is fixedly connected to the connecting rod, a through groove is provided on the adjusting plate, and a heating element is installed inside the through groove.

[0007] By adopting the above technical solution, the adjustment plate is pulled down to the top of the workpiece to determine the dispensing position, and then the adjustment part is started to drive the shell to descend for the second time, so that the liquid outlet pipe can accurately and correctly drip on the dispensing position. Through the two-step positioning, the device can achieve a more accurate and stable dispensing effect. While the shell is gradually descending, the heating part will be started. Since the position of the glue delivery pipe is close to the bottom of the shell, the operation of the heating part will heat the inside of the glue delivery pipe, so that the glue inside the glue delivery pipe can always be at room temperature, improving the fluidity of the glue, and starting the driving part to operate The bottom end of the push rod can push the glue transferred to the linkage bin by the glue delivery hose for extrusion, and the push rod can be moved up and down to push the glue to be continuously extruded to realize the gluing operation on the workpiece. As the push rod moves back and forth, the fixed plate will drive the linkage parts to operate, so that the glue in the glue storage bin can be transferred to the linkage bin in a fixed amount, thereby ensuring that the amount of glue extruded each time is evenly fixed, achieving effective control, reducing the adverse effects on the adhesion effect and appearance quality of the product due to excessive or insufficient glue, and causing product defects, thereby greatly improving product quality and production efficiency.

[0008] Furthermore, the adjusting member includes a groove opened on one side of the fixed seat, a screw rod is rotatably connected inside the groove, a motor 2 is fixedly connected to the top of the fixed seat, an output end of the motor 2 is fixedly connected to one end of the screw rod, a support block is threadedly connected to the screw rod, and one side of the support block is fixedly connected to one side of the shell.

[0009] By adopting the above technical solution, starting motor 2 drives the shell to move downward, so that the liquid outlet tube can drip accurately and correctly on the dispensing position. Through two descent positioning, the device can achieve a more accurate and stable dispensing effect, and also help to improve work efficiency.

[0010] Furthermore, the driving member includes a rotating shaft 2 rotatably connected to the inside of the cavity, a driving wheel is fixedly connected to the rotating shaft 2, a motor 1 is fixedly connected to one side of the shell, an output end of the motor 1 is fixedly connected to one end of the rotating shaft 2, a driven wheel is fixedly connected to the rotating shaft 1, a transmission belt is rotatably connected to the outer walls of the driving wheel and the driven wheel, the diameter of the driving wheel is smaller than the diameter of the driven wheel, and the cam is located below one end of the connecting plate.

[0011] By adopting the above technical solution, the rotation of the driven wheel can drive the rotating shaft and the cam to rotate. At the same time, because the diameter of the driving wheel is smaller than the diameter of the driven wheel, the driving wheel will rotate multiple circles while the driven wheel will only rotate one circle. Therefore, the speed of the driven wheel is slowed down and controlled to avoid excessive glue discharge.

[0012] Furthermore, a sealing gasket is fixedly connected to the bottom of the fixing plate, and the push rod passes through the sealing gasket.

[0013] By adopting the above technical solution, the sealing between the push rod and the fixed plate can be maintained by the sealing gasket, thereby reducing the upward penetration of glue.

[0014] Furthermore, the linkage part includes a through groove that passes through one side of the built-in groove, a support plate is fixedly connected to the outer wall of the fixed plate, the support plate is slidably connected in the through groove, one end of the support plate is fixedly connected to a rack, one end of the connecting rod passes through the built-in groove, one end of the connecting rod is fixedly connected to a gear, the gear is meshingly connected to the rack, and the impeller is located inside the glue storage bin.

[0015] By adopting the above technical solution, the fixed plate drives the support plate to move back and forth inside the through groove, thereby driving the rack to move together, so that the impeller rotates intermittently inside the glue storage bin. Through each intermittent rotation of the impeller, the glue inside the glue storage bin can be transferred to the linkage bin in a fixed amount, thereby ensuring that the amount of glue extruded each time is uniform and fixed.

[0016] Furthermore, the heating element includes a side groove opened on one side of the through groove, a pressure plate is slidably arranged in the side groove, a pressure sensor is fixedly connected to the top of the pressure plate, an electric heating plate is fixedly connected to the top of the pressure plate, and the pressure sensor is electrically connected to the electric heating plate.

[0017] By adopting the above technical solution, the pressure sensor will receive the pressure transmitted from the bottom of the shell, thereby starting the electric heating plate to operate and generate heat. Since the rubber hose is located close to the bottom of the shell, the operation and heat of the electric heating plate will heat the inside of the rubber hose, so that the glue inside the rubber hose can always be kept at room temperature.

[0018] Furthermore, a fixing rod is fixedly connected to the inside of the side groove, one end of the pressure plate is slidably connected to the fixing rod, a spring 2 is sleeved on the fixing rod, one end of the spring 2 is fixedly connected to the bottom of one end of the pressure plate, and the other end of the spring 2 is fixedly connected to the inner wall of the side groove.

[0019] By adopting the above technical solution, as the shell gradually descends, the pressure plate will slide on the fixed rod, and the elastic rebound of the second spring can make the pressure plate always fit with the bottom of the shell to maintain the stability of heating.

[0020] A dispensing method that improves the airtightness of plastic parts through dispensing.

[0021] By adopting the above technical solution, it is possible to ensure that the amount of glue extruded each time is uniform and fixed, achieve effective control, and reduce the adverse effects of excessive or insufficient glue on the adhesion effect and appearance quality of the product, thereby reducing product defects and greatly improving product quality and production efficiency.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. The present application is provided with a driving member and a linkage member, which drives the push rod to move back and forth by starting the driving member, so that the bottom end of the push rod can push the glue transmitted to the inside of the linkage bin by the glue delivery hose to be extruded, thereby realizing the dispensing operation on the workpiece. As the push rod moves back and forth in a cycle, the fixing plate drives the linkage member to operate, so that the impeller rotates intermittently inside the glue storage bin, and the glue inside the glue storage bin is transmitted to the inside of the linkage bin according to a fixed amount, thereby ensuring that the amount of glue extruded each time is uniformly fixed, realizing effective control, reducing the adverse effects on the bonding effect and appearance quality of the product caused by too much or too little glue, and causing product defects, thereby greatly improving product quality and production efficiency.

[0023] 2. The present application is provided with a movable plate, an adjusting plate and an adjusting member. First, the movable plate is started to slide to drive the adjusting plate to move to the top of the workpiece, and then the adjusting plate is pulled down to above the workpiece to determine the dispensing position, and then the adjusting member is started to drive the shell to descend a second time, so that the liquid outlet pipe can accurately and accurately drip on the dispensing position. Through two descent positioning, the device can achieve a more accurate and stable dispensing effect, and also help to improve work efficiency, simplify assembly, reduce error rate, improve product reliability, and improve the air tightness of the product by glue filling to meet the product's performance in a liquid environment.

[0024] 3. The present application is provided with a heating element. When the shell gradually descends, the bottom of the shell will fit with the heating element inside the through groove. At this time, the heating element will be started. Since the position of the rubber pipe is close to the bottom of the shell, the inside of the rubber pipe will be heated by the operation of the heating element, so that the glue inside the rubber pipe can always be kept at room temperature, thereby improving the fluidity of the glue, making it more convenient to perform glue dispensing operations, and improving the quality and effect of glue dispensing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the workpiece in this application.

[0027] Figure 3 It is a cross-sectional view of the shell in this application.

[0028] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the heating element in this application.

[0030] Description of reference numerals: 1. Base; 2. Moving plate; 3. Adjusting plate; 4. Workpiece; 5. Fixed seat; 6. Adjusting member; 7. Shell; 8. Glue storage bin; 81. Glue delivery hose; 9. Cavity; 10. Linkage bin; 11. Fixed plate; 12. Rotating shaft 1; 13. Cam; 14. Rotating rod; 15. Connecting plate; 16. Rotating shaft 2; 17. Driving wheel; 18. Motor 1; 19. Driven wheel; 20. Transmission belt; 21. Push rod; 22. Fixed sheet ; 23. Spring 1; 24. Sealing gasket; 25. Liquid outlet pipe; 26. Built-in groove; 27. Through groove; 28. Support plate; 29. ​​Rack; 30. Connecting rod; 31. Gear; 32. Impeller; 33. Through groove; 34. Side groove; 35. Fixed rod; 36. Press plate; 37. Spring 2; 38. Pressure sensor; 39. Electric heating plate; 61. Groove; 62. Screw; 63. Motor 2; 64. Support block. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5 This application is described in further detail.

[0032] The embodiments of the present application disclose a glue dispensing device and a glue dispensing method for improving the air tightness of a plastic package by glue dispensing.

[0033] Reference Figure 1 , Figure 2 and Figure 3A glue dispensing device and a glue dispensing method for improving the air tightness of a plastic package by glue dispensing include a base 1, a movable plate 2 is arranged on one side of the base 1, an adjusting plate 3 is slidably arranged on one side of the movable plate 2, a workpiece 4 is arranged on the base 1, a fixed seat 5 is fixedly connected to the top of the adjusting plate 3, an adjusting member 6 is installed inside the fixed seat 5, a shell 7 is installed on one side of the fixed seat 5, a glue storage bin 8 is fixedly connected to the inside of the shell 7, a cavity 9 is provided inside the shell 7, a linkage bin 10 is provided inside the shell 7, a glue delivery pipe 81 is fixedly connected to the bottom of the glue storage bin 8, the other end of the glue delivery pipe 81 is fixedly connected to the linkage bin 10, the cavity 9 is connected to the linkage bin 10, a fixed plate 11 is fixedly connected to the inside of the linkage bin 10, a rotating shaft 12 is rotatably connected to the inside of the cavity 9, a cam 13 is fixedly connected to the rotating shaft 12, a rotating rod 14 is fixedly connected to the cavity 9, and a rotating rod 14 is fixedly connected to the inside of the cavity 9. A connecting plate 15 is rotatably connected to the rod 14, and two ends of the connecting plate 15 are respectively located in the cavity 9 and the linkage bin 10, a driving part is installed inside the cavity 9, a push rod 21 is slidably connected to the fixed plate 11, a fixing plate 22 is fixedly connected to the push rod 21, a spring 23 is sleeved on the push rod 21, the top of the spring 23 is fixedly connected to the bottom of the fixing plate 22, the bottom of the spring 23 is fixedly connected to the top of the fixed plate 11, a liquid outlet pipe 25 is fixedly connected to the bottom of the linkage bin 10, a built-in groove 26 is provided inside the shell 7, a linkage part is installed in the built-in groove 26, a connecting rod 30 is rotatably connected to the inside of the glue storage bin 8, an impeller 32 is fixedly connected to the connecting rod 30, a through groove 33 is provided on the adjusting plate 3, a heating element is installed inside the through groove 33, a sealing gasket 24 is fixedly connected to the bottom of the fixed plate 11, and the push rod 21 passes through the sealing gasket 24.

[0034] When in use, first design a copper stamping die for the sheet metal material, use a hardware die to cut the material, and then complete the required process according to the drawing, then put the sheet metal into the injection mold, use an injection molding machine to form it, and complete the fusion with the plastic material through high temperature and high pressure to form a whole, and then place the workpiece 4 formed as a whole on the top of the base 1, and then pour the epoxy resin AB glue into the interior of the glue storage bin 8. The epoxy resin AB glue can achieve water resistance, oil resistance, corrosion resistance, environmental protection and super strong bonding properties. At this time, the movable plate 2 can be started to slide and drive the adjustment plate 3 to move to the top of the workpiece 4, and then the adjustment plate 3 can be pulled down to the top of the workpiece 4 to determine the glue dispensing position, and then the adjustment member 6 can be started to drive the shell 7 to descend for the second time, so that the liquid outlet pipe 25 can be accurately and correctly dripped on the glue dispensing position. Through two descent positioning, the device can achieve more accurate and more stable glue dispensing effect, and also help to improve work efficiency. In the shell 7 As it gradually descends, the bottom of the shell 7 will fit with the heating element inside the through groove 33, and the heating element will be started at this time. Since the position of the glue delivery pipe 81 is close to the bottom of the shell 7, the inside of the glue delivery pipe 81 will be heated by the operation of the heating element, so that the glue inside the glue delivery pipe 81 can be kept at room temperature, thereby improving the fluidity of the glue, making it more convenient for the glue dispensing operation, and improving the quality and effect of the glue dispensing. When the liquid outlet pipe 25 reaches the dispensing position, the driving element can be started to drive the cam 13 to rotate. Through the rotation of the cam 13, one end of the connecting plate 15 will be intermittently collided, so that the connecting plate 15 will rotate with the rotating rod 14 as the center after being collided. When the other end of the connecting plate 15 descends, it will drive the push rod 21 to move downward on the fixed plate 11 and squeeze the spring 1 23 to contract. At this time, the glue transmitted to the inside of the linkage bin 10 by the glue delivery pipe 81 can be pushed through the bottom end of the push rod 21 for extrusion; Subsequently, when the cam 13 continues to rotate away from the connecting plate 15, according to the rebound of the spring 1 23, the fixing plate 22 will be pushed to drive the push rod 21 to rise, so that the connecting plate 15 returns to its original position, and the glue is continuously squeezed out by the up and down movement of the push rod 21, so as to realize the dispensing operation on the workpiece 4. As the push rod 21 moves back and forth in a cycle, the fixing plate 22 will drive the linkage part to operate, and through the operation of the linkage part, the connecting rod 30 can be intermittently rotated, so that the impeller 32 can be intermittently rotated inside the glue storage bin 8. Through each intermittent rotation of the impeller 32, the glue inside the glue storage bin 8 can be pressed against the fixed surface. Quantitative transmission to the inside of the linkage bin 10 can ensure that the amount of glue extruded each time is uniform and fixed, achieve effective control, reduce the adverse effects of excessive or insufficient glue on the bonding effect and appearance quality of the product, and cause product defects, greatly improve product quality and production efficiency, while also reducing product costs, reducing labor intensity, improving work efficiency, simplifying assembly, reducing error rates, and improving product reliability. Finally, after the mixed glue is applied to the designated area, it can be left to solidify and dry for 24 hours, and the air tightness of the product is improved by glue filling to meet the product's performance in a liquid environment.

[0035] Reference Figure 1 and Figure 5 The adjusting member 6 includes a groove 61 opened on one side of the fixing seat 5, a screw rod 62 is rotatably connected inside the groove 61, a motor 2 63 is fixedly connected to the top of the fixing seat 5, an output end of the motor 2 63 is fixedly connected to one end of the screw rod 62, a support block 64 is threadedly connected to the screw rod 62, and one side of the support block 64 is fixedly connected to one side of the housing 7.

[0036] When in use, first start the motor 2 63 to drive the screw 62 to rotate, so that the support block 64 moves along the direction of the groove 61, thereby driving the shell 7 to move downward, so that the liquid outlet tube 25 can accurately and correctly drip on the dispensing position. Through two descent positioning, the device can achieve a more accurate and stable dispensing effect, and also help to improve work efficiency.

[0037] Reference Figure 1 and Figure 2 The driving member includes a rotating shaft 16 rotatably connected to the inside of the cavity 9, a driving wheel 17 is fixedly connected to the rotating shaft 16, a motor 18 is fixedly connected to one side of the housing 7, an output end of the motor 18 is fixedly connected to one end of the rotating shaft 16, a driven wheel 19 is fixedly connected to the rotating shaft 12, a transmission belt 20 is rotatably connected to the outer wall of the driving wheel 17 and the driven wheel 19, the diameter of the driving wheel 17 is smaller than the diameter of the driven wheel 19, and the cam 13 is located below one end of the connecting plate 15.

[0038] When in use, first start the motor 18 to drive the rotating shaft 2 16 to rotate, so that the driving wheel 17 rotates together. Because the driving wheel 17 and the driven wheel 19 are connected with the transmission belt 20, when the driving wheel 17 rotates, the driven wheel 19 is driven to rotate together through the guidance of the transmission belt 20. Therefore, the rotation of the driven wheel 19 can drive the rotating shaft 12 and the cam 13 to rotate. At the same time, because the diameter of the driving wheel 17 is smaller than the diameter of the driven wheel 19, the driving wheel 17 rotates multiple circles and the driven wheel 19 only rotates one circle. Therefore, the speed of the driven wheel 19 is slowed down and controlled to avoid excessive glue discharge.

[0039] Reference Figure 3 and Figure 4 The linkage part includes a through groove 27 that passes through one side of the built-in groove 26. A support plate 28 is fixedly connected to the outer wall of the fixed plate 22. The support plate 28 is slidably connected in the through groove 27. One end of the support plate 28 is fixedly connected to a rack 29. One end of a connecting rod 30 passes through the built-in groove 26. One end of the connecting rod 30 is fixedly connected to a gear 31. The gear 31 is meshed with the rack 29. The impeller 32 is located inside the glue storage bin 8.

[0040] During use, as the push rod 21 moves back and forth in a cycle, the fixing plate 22 will drive the support plate 28 to move back and forth inside the through groove 27, thereby driving the rack 29 to move together. Since the rack 29 and the gear 31 are meshed with each other, the gear 31 will be driven to rotate regularly according to the cyclic movement of the rack 29, so that the impeller 32 will rotate intermittently inside the glue storage bin 8. Through each intermittent rotation of the impeller 32, the glue inside the glue storage bin 8 can be transferred to the linkage bin 10 in a fixed amount, thereby ensuring that the amount of glue extruded each time is uniform and fixed, achieving effective control, reducing the adverse effects of excessive or insufficient glue on the bonding effect and appearance quality of the product, resulting in product defects, and greatly improving product quality and production efficiency.

[0041] Reference Figure 1 and Figure 5 The heating element includes a side groove 34 opened on one side of the through groove 33, a pressing plate 36 is slidably arranged in the side groove 34, a pressure sensor 38 is fixedly connected to the top of the pressing plate 36, an electric heating plate 39 is fixedly connected to the top of the pressing plate 36, the pressure sensor 38 is electrically connected to the electric heating plate 39, a fixing rod 35 is fixedly connected to the inside of the side groove 34, one end of the pressing plate 36 is slidably connected to the fixing rod 35, a spring 37 is sleeved on the fixing rod 35, one end of the spring 37 is fixedly connected to the bottom of one end of the pressing plate 36, and the other end of the spring 37 is fixedly connected to the inner wall of the side groove 34.

[0042] As the shell 7 gradually descends, the bottom of the shell 7 will fit with the pressure plate 36 inside the through groove 33. At this time, the pressure sensor 38 will receive the pressure transmitted from the bottom of the shell 7, thereby starting the electric heating plate 39 to operate and generate heat. Since the position of the glue pipe 81 is close to the bottom of the shell 7, the operation and heat of the electric heating plate 39 will be used to heat the inside of the glue pipe 81, so that the glue inside the glue pipe 81 can always be at room temperature, thereby improving the fluidity of the glue, making it more convenient to dispense the glue, and improving the quality and effect of the dispensing. At the same time, as the shell 7 gradually descends, the pressure plate 36 will slide on the fixing rod 35. Through the elastic rebound of the spring 2 37, the pressure plate 36 can always fit with the bottom of the shell 7 to maintain the stability of the heating.

[0043] The implementation principle of a glue dispensing device and a glue dispensing method for improving the air tightness of a plastic package by glue dispensing in this embodiment is as follows: when in use, first place the workpiece 4 on the top of the base 1, and then pour the epoxy resin AB glue into the interior of the glue storage bin 8. The epoxy resin AB glue can achieve water resistance, oil resistance, corrosion resistance, environmental protection and super strong bonding performance. At this time, the movable plate 2 can be started to slide and drive the adjustment plate 3 to move to the top of the workpiece 4, and then the adjustment plate 3 can be pulled down to the top of the workpiece 4 to determine the glue dispensing position, and then the motor 2 63 is started to drive the screw 62 to rotate, so that the support block 64 moves along the direction of the groove 61, thereby driving the shell 7 to move downward, so that the liquid outlet pipe 25 can be accurately and correctly dripped on the glue dispensing position, and through two drops and positioning, the device can achieve a more accurate and more stable glue dispensing effect, and also help to improve work efficiency; As the shell 7 gradually descends, the bottom of the shell 7 will fit with the pressure plate 36 inside the through groove 33. At this time, the pressure sensor 38 will receive the pressure transmitted from the bottom of the shell 7, thereby starting the electric heating plate 39 to operate and generate heat. Since the position of the glue delivery pipe 81 is close to the bottom of the shell 7, the operation and heat of the electric heating plate 39 will be used to heat the inside of the glue delivery pipe 81, so that the glue inside the glue delivery pipe 81 can always be at room temperature, thereby improving the fluidity of the glue, making it more convenient to perform glue dispensing operations, and improving the quality and effect of glue dispensing. At the same time, as the shell 7 gradually descends, the pressure plate 36 will slide on the fixing rod 35. Through the elastic rebound of the spring 2 37, the pressure plate 36 can always fit with the bottom of the shell 7 to maintain the stability of heating. When the liquid outlet pipe 25 reaches the dispensing position, the motor 18 can be started to drive the rotating shaft 2 16 to rotate, thereby rotating the driving wheel 17 together. Because the driving wheel 17 and the driven wheel 19 are connected with the transmission belt 20, when the driving wheel 17 rotates, the driven wheel 19 is driven to rotate together with the transmission belt 20, so that the rotation of the driven wheel 19 can drive the rotating shaft 12 and the cam 13 to rotate. At the same time, because the diameter of the driving wheel 17 is smaller than the diameter of the driven wheel 19, the driving wheel 17 rotates multiple circles while the driven wheel 19 rotates only one circle, so as to reduce the speed of the driven wheel 19 and avoid excessive glue discharge. Through the rotation of the cam 13, one end of the connecting plate 15 will be intermittently collided, so that the connecting plate 15 will rotate with the rotating rod 14 as the center after being collided. When the other end of the connecting plate 15 drops, it will drive the push rod 21 to move downward on the fixed plate 11 and squeeze the spring 1 23 to shrink. At this time, the bottom end of the push rod 21 can push the glue delivery pipe 81 to be transmitted to the glue inside the linkage bin 10 for extrusion; Subsequently, when the cam 13 continues to rotate away from the connecting plate 15, according to the rebound of the spring 1 23, the fixing plate 22 will be pushed to drive the push rod 21 to rise, so that the connecting plate 15 returns to its original position, and the glue is continuously squeezed out by the up and down movement of the push rod 21, so as to realize the dispensing operation on the workpiece 4. As the push rod 21 moves back and forth in a cycle, the fixing plate 22 will drive the support plate 28 to move back and forth inside the through groove 27, thereby driving the rack 29 to move together. Because the rack 29 and the gear 31 are meshed with each other, According to the cyclic movement of the rack 29, the gear 31 is driven to rotate regularly, so that the impeller 32 can rotate intermittently inside the glue storage bin 8. Through each intermittent rotation of the impeller 32, the glue inside the glue storage bin 8 can be transferred to the linkage bin 10 in a fixed amount, thereby ensuring that the amount of glue extruded each time is uniform and fixed, achieving effective control, reducing the adverse effects of excessive or insufficient glue on the adhesion effect and appearance quality of the product, resulting in product defects, and greatly improving product quality and production efficiency.

Claims

1. A dispensing device, comprising a base (1), characterized in that: A movable plate (2) is arranged on one side of the base (1), an adjustment plate (3) is slidably arranged on one side of the movable plate (2), a workpiece (4) is arranged on the base (1), a fixed seat (5) is fixedly connected to the top of the adjustment plate (3), an adjustment member (6) is installed inside the fixed seat (5), a shell (7) is installed on one side of the fixed seat (5), a glue storage bin (8) is fixedly connected inside the shell (7), a cavity (9) is opened inside the shell (7), and the shell (7) A linkage bin (10) is provided inside the glue storage bin (8), a glue delivery pipe (81) is passed through and fixedly connected to the bottom of the glue storage bin (8), the other end of the glue delivery pipe (81) is passed through and fixedly connected to the linkage bin (10), the cavity (9) is connected to the linkage bin (10), a fixing plate (11) is fixedly connected inside the linkage bin (10), a rotating shaft (12) is rotatably connected inside the cavity (9), a cam (13) is fixedly connected to the rotating shaft (12), and a rotating rod is fixedly connected inside the cavity (9). (14), a connecting plate (15) is rotatably connected to the rotating rod (14), two ends of the connecting plate (15) are respectively located in the cavity (9) and the linkage chamber (10), a driving member is installed inside the cavity (9), a push rod (21) is slidably connected to the fixed plate (11), a fixing plate (22) is fixedly connected to the push rod (21), a spring (23) is sleeved on the push rod (21), the top of the spring (23) is fixedly connected to the bottom of the fixing plate (22), and the spring (23) is The bottom of the linkage bin (23) is fixedly connected to the top of the fixed plate (11); a liquid outlet pipe (25) is fixedly connected to the bottom of the linkage bin (10); a built-in groove (26) is provided inside the shell (7); a linkage member is installed in the built-in groove (26); a connecting rod (30) is rotatably connected to the inside of the glue storage bin (8); an impeller (32) is fixedly connected to the connecting rod (30); a through groove (33) is provided on the adjustment plate (3); a heating member is installed in the through groove (33).

2. A dispensing device according to claim 1, characterized in that: The adjusting member (6) comprises a groove (61) formed on one side of the fixing seat (5), a screw rod (62) being rotatably connected inside the groove (61), a second motor (63) being fixedly connected to the top of the fixing seat (5), an output end of the second motor (63) being fixedly connected to one end of the screw rod (62), a support block (64) being threadedly connected to the screw rod (62), and one side of the support block (64) being fixedly connected to one side of the housing (7).

3. A dispensing device according to claim 1, characterized in that: The driving member comprises a second rotating shaft (16) rotatably connected to the inside of the cavity (9), a driving wheel (17) being fixedly connected to the second rotating shaft (16), a motor (18) being fixedly connected to one side of the housing (7), an output end of the motor (18) being fixedly connected to one end of the second rotating shaft (16), a driven wheel (19) being fixedly connected to the first rotating shaft (12), a transmission belt (20) being rotatably connected to the outer walls of the driving wheel (17) and the driven wheel (19), the diameter of the driving wheel (17) being smaller than the diameter of the driven wheel (19), and the cam (13) being located below one end of the connecting plate (15).

4. A dispensing device according to claim 1, characterized in that: A sealing gasket (24) is fixedly connected to the bottom of the fixed plate (11), and the push rod (21) passes through the sealing gasket (24).

5. A dispensing device according to claim 1, characterized in that: The linkage member comprises a through groove (27) extending through one side of the built-in groove (26); a support plate (28) is fixedly connected to the outer wall of the fixing plate (22); the support plate (28) is slidably connected in the through groove (27); one end of the support plate (28) is fixedly connected to a rack (29); one end of the connecting rod (30) extends through the built-in groove (26); one end of the connecting rod (30) is fixedly connected to a gear (31); the gear (31) is meshingly connected to the rack (29); and the impeller (32) is located inside the glue storage bin (8).

6. A dispensing device according to claim 1, characterized in that: The heating element comprises a side groove (34) opened on one side of the through groove (33), a pressure plate (36) is slidably arranged in the side groove (34), a pressure sensor (38) is fixedly connected to the top of the pressure plate (36), an electric heating plate (39) is fixedly connected to the top of the pressure plate (36), and the pressure sensor (38) is electrically connected to the electric heating plate (39).

7. A dispensing device according to claim 6, characterized in that: A fixing rod (35) is fixedly connected inside the side groove (34), one end of the pressure plate (36) is slidably connected to the fixing rod (35), a second spring (37) is sleeved on the fixing rod (35), one end of the second spring (37) is fixedly connected to the bottom of one end of the pressure plate (36), and the other end of the second spring (37) is fixedly connected to the inner wall of the side groove (34).

8. A method for improving the air tightness of a plastic package by dispensing glue, characterized in that: The method is applicable to a dispensing device as described in any one of claims 1 to 7, and the steps of the method are as follows: S1: First, place the workpiece (4) on the top of the base (1), then start the moving plate (2) to slide and drive the adjustment plate (3) to move to the top of the workpiece (4), then pull the adjustment plate (3) down to the top of the workpiece (4) to determine the dispensing position, and then start the adjustment member (6) to drive the shell (7) to move downward, so that the liquid outlet pipe (25) can accurately and correctly drip on the dispensing position. Through two drops and positioning, the device can achieve a more accurate and more stable dispensing effect, and also help to improve work efficiency; S2: As the shell (7) gradually descends, the bottom of the shell (7) is fitted with the pressure plate (36) inside the through groove (33). Since the position of the glue delivery pipe (81) is close to the bottom of the shell (7), the inside of the glue delivery pipe (81) is heated by the operation of the electric heating plate (39), so that the glue inside the glue delivery pipe (81) can always be kept at room temperature, thereby improving the fluidity of the glue, making it more convenient to perform glue dispensing operations, and improving the quality and effect of glue dispensing; S3: When the liquid outlet pipe (25) reaches the dispensing position, the motor 1 (18) can be started to drive the rotating shaft 1 (12) and the cam (13) to rotate. The rotation of the cam (13) will intermittently collide with one end of the connecting plate (15), so that the one end of the connecting plate (15) drives the push rod (21) to move downward on the fixed plate (11) and squeeze the spring 1 (23) to shrink. At this time, the bottom end of the push rod (21) can push the glue delivered by the glue delivery pipe (81) to the inside of the linkage bin (10) for extrusion. The glue is continuously extruded by the up and down movement of the push rod (21), thereby realizing the dispensing operation on the workpiece (4); S4: As the push rod (21) moves back and forth, the fixing plate (22) drives the rack (29) to move in a circular manner, thereby driving the gear (31) to rotate regularly, so that the impeller (32) rotates intermittently inside the glue storage bin (8). The impeller (32) can transfer the glue inside the glue storage bin (8) to the linkage bin (10) in a fixed amount, thereby ensuring that the amount of glue extruded each time is uniform and fixed, achieving effective control, reducing the adverse effects of excessive or insufficient glue on the bonding effect and appearance quality of the product, resulting in product defects, and greatly improving product quality and production efficiency; S5: Finally, apply the mixed glue to the designated area and let it stand for 24 hours to solidify and dry. The air tightness of the product is improved by glue filling to meet the performance of the product in a liquid environment.

Images