Multi-channel self-cleaning automatic dispensing equipment capable of digitally displaying glue mixing amount

Abstract

The invention discloses automatic dispensing equipment which is multi-channel, capable of digitally displaying the glue mixing amount and self-cleaning. The equipment is characterized by comprising a glue dripping machine head, a glue dripping machine frame and a cleaning tank. The glue dripping machine head conveys glue in a container into a glue dripping needle tube through mutual cooperation of the three layers of multi-tooth seamless plates. The first-layer multi-tooth seamless plate controls the inflow of glue, and after the glue is left on the first-layer metal plate, the motor opens the second-layer plate and closes the first-layer metal plate, so that the migration of the glue is realized. And then the third layer is opened, the second layer plate is closed, the glue is pressed into tooth gaps of the third layer plate and finally flows into a glue dripping needle tube, and glue dispensing is completed. In addition, the motor can sink the glue dripping machine head into the cleaning tank to complete automatic cleaning operation. According to the invention, the adhesion influence of glue on the machine is reduced, and manual cleaning by an operator is avoided. The device has the following advantages that the dispensing precision is improved, the safety of operators is protected, the device is environment-friendly, the operation process is simplified, and raw material loss is reduced.

Description

Technical Field

[0001] The present invention relates to a multi-channel, digitally displayable glue adjustment, self-cleaning automatic glue dispensing device, which can be widely used in electrical and electronic sealing (to prevent leakage through sealing), such as sealing of piezoelectric electronic production. It specifically involves various production scenarios such as manufacturing, operation, environmental protection, safe production, uniform glue dripping, etc., and is an automatic glue dispensing device that can improve product quality and protect workers' production safety. Background Art

[0002] With the improvement of people's living standards, gadgets in daily life are also constantly developing, and among them, the craftsmanship of lighters is also constantly improving. Lighters have a wide range of applications and important significance in daily life, including cooking, celebrations, outdoor survival, emergency lighting, small household repairs, etc. It provides people with convenient ignition tools to meet the needs of various life scenarios. Piezoelectric electronics are the main components of lighters to generate sparks. By converting mechanical energy into electrical energy, it avoids tedious operations such as installing batteries for lighters. At the same time, piezoelectric electronics can provide reliability, stability and safety for lighters, are not easily affected by humid environments, and have a large number of ignition times. In addition, piezoelectric electronics also have the function of easy maintenance. When piezoelectric electronics fail, they can be repaired by simply replacing piezoelectric electronics, bringing a simpler use and maintenance experience to lighters. As a core component of lighters, the quality of piezoelectric electronics plays a vital role in lighters. Before this, piezoelectric electronics had been mainly produced in Japan. After being introduced into my country, after the upgrading of some Chinese manufacturers, the product quality has been continuously improved, and piezoelectric electronics that meet the market have been produced, but there is still a gap compared with Japan and South Korea. For example, the quality of ignition piezoelectric electronics is mainly reflected in three aspects: 1. The standards for appearance and external dimensions are strict, and the height and size errors must be controlled between 0.05 mm and 0.09 mm. 2. During use, each impact must instantly generate a voltage of more than 850 volts to meet the ignition requirements. If it is in summer, a voltage of more than 880 volts must be generated, and the upper and lower voltage difference of each impact cannot exceed 6 volts. 3. The standard for the amount of glue used for sealing is strict. Each time the glue is dripped, the glue must be basically controlled at 0.001 ml to ensure that the glue does not overflow, and it will not be too little to cause poor sealing effect. The quality of the sealing effect directly determines the quality of piezoelectric electronics, which is the top priority in the entire lighter production process. In the existing lighter market, how to control the quality of the sealing glue is the focus of many companies.

[0003] Importance of glue: The generation of electric charge by piezoelectric electronics under mechanical stress mainly relies on piezoelectric ceramics, which is a commonly used piezoelectric electronic material. When subjected to external force (for example, the user presses the button of the lighter), the piezoelectric ceramic generates voltage, thereby generating an electric spark. This electric spark is enough to generate the heat required for combustion and ignite the fuel in the lighter, such as butane gas. Therefore, protecting piezoelectric ceramics is a core step to improve the durability and simplicity of lighters. Most of the existing protection technologies protect piezoelectric ceramics by dripping glue into the piezoelectric electronics to seal the piezoelectric ceramics. If less glue is dripped, the sealing is not enough, resulting in a reduced life of the piezoelectric ceramics; if too much glue is dripped, it will overflow the glue groove and affect the entire piezoelectric electronic appearance, and it cannot be installed in the lighter. Therefore, the quality of the sealing effect directly affects the overall quality of the piezoelectric electronics, and the glue dripping process is also a key link in the production process of piezoelectric electronics.

[0004] Hazards of glue: Glue is usually composed of many compounds, the main components of which include unsaturated polyester resin and polyvinyl chloride resin, which are harmful to the human body. They may cause harm to the respiratory tract, skin, gastrointestinal tract and liver.

[0005] 1. Respiratory tract: After the chemical substances in the glue evaporate, the smell is inhaled into the respiratory tract, which may cause irritation symptoms, irritation pharyngitis, or even variant asthma, such as coughing, throat discomfort, etc.

[0006] 2. Skin: If the substance in the glue comes into contact with the skin, it may also cause damage to the skin. Contact dermatitis may occur at the contact site, with local erythema, stinging, itching, and severe erythema may also cause blisters and erosion. What's more, workers who have been injured by glue will have sequelae. Even after the skin is repaired, they cannot come into contact with glue again, and the old disease will relapse.

[0007] 3. Gastrointestinal tract and liver: If glue is accidentally ingested, it may cause damage to the gastrointestinal tract, such as nausea, vomiting, abdominal pain and other symptoms, and in severe cases, liver damage.

[0008] In addition, there are carcinogens in glue, such as formaldehyde and benzene. Excessive exposure may cause dizziness, vertigo, rhinitis, and in severe cases, may stimulate malignant tumors such as leukemia. In daily production environments, workers need to wear protective gloves before and after operating glue-related equipment, and carefully clean their skin to ensure that there is no glue residue on the skin before leaving. Therefore, improper use of glue will seriously affect the health of workers.

[0009] Disadvantages of traditional glue dispenser:

[0010] 1. Difficult processing and difficult to ensure precision: The traditional double-hole long shaft device has more than 50 needle tubes in a single row, and the machine length needs to reach the required size, resulting in too long length. The two parts that contact the shaft and the shaft hole are difficult to achieve the required precision. Part one is the sleeve, and part two is the double-hole long shaft. Because the hole of the sleeve is too small, it is difficult to process the long hole grinder. It needs to be divided into three sections for manufacturing. For example, the three tolerances of right angle tolerance, hole diameter tolerance, hole roundness tolerance, and hole taper tolerance must be completely consistent. It is quite difficult to form a straight hole without glue leakage when the three sections are installed on the same bottom plate. In addition, in the manufacturing process of this product, the first step is to select materials, the second step is to process blanks, the third step is to perform metal quenching and tempering, the fourth step is to grind initially, including grinding, drilling, tapping, etc., the fifth step is quenching, the sixth step is fine grinding of right angles, including surface grinding, and the seventh step is internal grinding. Because this product has many shortcomings such as complicated process, high precision requirements, troublesome manufacturing, and high manufacturing costs, it is difficult to achieve this requirement with general technology. In addition, in terms of technology, the two perpendicular holes must correspond to each other and be connected, and the distance requirements must be completely consistent; the roundness, hardness, and straightness of the shaft require very high precision to achieve the condition of no glue leakage, which makes the processing of the double-hole long shaft also quite difficult.

[0011] 2. Difficult to clean, and safety cannot be guaranteed. There are two important shortcomings that cannot be solved in the use of traditional glue droppers. First, the glue contains curing agent during use, and it must be cleaned with a diluent once within three hours, otherwise the glue in the two rows of corresponding holes in the multi-needle tube and the long axis will solidify and harden. At the same time, after working for a long time, the glue inlet will also solidify and harden, resulting in uneven glue suction flow, so that the amount of glue dripped out is different, affecting product quality; second, after get off work every day, employees need to disassemble the machine head from the frame, pull out the long axis, manually clean the residual glue, and soak it in the diluent. Before going to work every day, it is necessary to take the machine head out of the diluent and install the long axis, clean up the debris, and then install the machine head into the frame for debugging before it can work. Since this process must be done manually, the diluent will cause certain damage to human skin during long-term work and induce allergies. This disassembly and cleaning process is a problem that manufacturers of this product cannot change. In the actual working environment, since the traditional glue dispenser equipment cannot automatically clean the glue and prevent the glue from volatilizing, workers need to manually clean the glue on the equipment, which makes the workers directly contact with the glue, which will cause the workers' skin to become red, itchy, and allergic, and even worse, leave sequelae. In addition, the chemicals volatilized from the glue will also pollute the workshop environment, further endangering the safety of the workers. In order to solve the safety and efficiency problems of the above-mentioned glue dispenser, the present invention is specially made. Summary of the invention

[0012] The present invention uses 3D modeling software to design a practical and operable model to achieve the goal of piezoelectric electronic glue dripping. Compared with the traditional piezoelectric electronic glue dripping machine, the main innovation of the present invention is that it has higher processing accuracy, simpler manufacturing process and automatic cleaning function, and mainly uses three layers of seamless toothed metal plates to replace the double-hole long shaft to realize the glue transportation process. In the present invention, each seamless toothed metal plate can be opened and closed, and the glue feeding amount is controllable.

[0013] The seamless toothed metal plate consists of an upper piece and a lower piece. When the toothed metal plate is in a closed state, the entire toothed metal plate presents a complete whole, with no gaps on the surface, effectively blocking the entry of glue. The lower piece of the seamless toothed metal plate is fixed to the machine and is not connected to any movable device. On the contrary, the upper piece of the seamless toothed metal plate serves as the main part to support the opening and closing of the toothed metal plate, and each upper piece is connected to its own movable device.

[0014] In the initial state, all the toothed metal plates are in a closed state. The operator can move the upper piece of the toothed metal plate upward by clicking the debug and run buttons on the PLC visual interface, so that the glue enters the tooth gaps of the toothed metal plate. The glue flow process is as follows:

[0015] First, move the upper sheet of the first layer of toothed metal plate upwards to allow the glue to flow from the container into the tooth gaps of the first layer of toothed metal plate. When the upper sheet of the first layer of metal plate is opened to a certain height, move the upper sheet of the second layer of toothed metal plate to a specified height. After the two plates are raised to the specified height, close the first layer of toothed metal plate and squeeze the excess glue back into the glue container to ensure that the tooth gaps of the second layer of toothed metal plate are filled with glue.

[0016] Then, when the first layer of toothed metal plate is completely closed, the upper piece of the third layer of toothed metal plate is moved upward to allow the glue stored in the tooth gaps of the second layer of toothed metal plate to flow into the tooth gaps of the third layer of toothed metal plate, and then the second layer of toothed metal plate is closed. After the second layer of toothed metal plate is completely closed, the upper piece of the third layer of toothed metal plate is moved downward to squeeze the glue in the tooth gaps into the glue dripping tube, thereby achieving the purpose of glue dripping.

[0017] The coordination process between the three layers of toothed metal plates is realized through PLC programming. After the operator clicks the start button, the glue dispenser can operate automatically. In addition, the automation of the cleaning process is also realized through PLC programming. There are two transmission blocks connected to the top of the glue dispenser, which support the movement of the entire glue dispenser in four directions: front, back, up and down. The glue is cleaned by soaking the entire glue dispenser in a water tank.

[0018] In order to better demonstrate the present invention, the specific process is as follows:

[0019] 1. Make a 3D model of the glue dispenser using 3D software

[0020] In order to simplify the processing and facilitate model checking, the present invention uses three-dimensional software to design drawings. This software allows single-part design and assembly, and provides a machine visualization interface and simulated motion function after assembly.

[0021] 2. Model processing and assembly

[0022] After the whole machine model is designed, it is sent to the processing center for parts production. In order to ensure the sealing of the metal plate, the seamless toothed metal plate needs to be made by wire cutting technology. Thanks to the convenience of the design, each part can be completed at one time, avoiding the problem of inconsistent precision that may be caused by staged processing, thereby ensuring the accuracy of the machine. After all parts are processed, professionals assemble the machine according to the designed drawings and install the motor in a specific position as required to provide power.

[0023] 3. Start wiring operation and PLC programming

[0024] Connect the assembled machine to the circuit to provide basic power support. Then analyze the project requirements, design the corresponding control logic, convert the logic into PLC programming language, and write the corresponding program. After the program is written, use the simulation function of the PLC programming software to test and debug the program to ensure that the program runs as expected. Then, connect the hardware such as sensors and actuators to the PLC, configure the input / output modules, and establish communication connections. Finally, download the tested program to the PLC and debug the actual machine. According to the on-site conditions, optimize and modify the program to ensure that the entire automation system can run stably and reliably.

[0025] 4. Debug the machine

[0026] After the machine is connected to the PLC, the actual debugging begins. First, press the start button on the control panel to debug the linkage of each layer of seamless toothed metal plate. After reaching the expected goal, place the prepared piezoelectric electronics with glue dripping directly under the multi-needle tube, and each needle tube corresponds to a piezoelectric electronics. Then pour the glue into the glue container, press the start button on the control panel to perform a round of glue dripping operation, and observe the amount of glue dripping into the piezoelectric electronics. After it solidifies, check the degree of sealing. According to the actual results, debug the machine structure (such as cams, glue adjustment rods, etc.) to achieve the expected level. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 :Left view of glue dispenser head - explanation diagram

[0028] Figure 2 :Top view of glue dispenser head - explanation diagram

[0029] Figure 3 :Glue dispenser head connecting rod structure diagram

[0030] Figure 4 :Overall view of glue dispenser DETAILED DESCRIPTION

[0031] In order to better understand the practice of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings to clarify the scope of the present invention and reduce the difficulty of understanding the present invention. The embodiment introduction part will focus on the core equipment and does not cover all embodiments.

[0032] Example 1

[0033] Reference Figure 1 , is the core component of the present invention, and is the key component for automatically performing glue dripping operation. The glue container bucket 1 is connected to the pressing plate 2, and the pressing plate 2 is close to the lower piece 3 of the first layer of toothed metal plate, the lower piece 3 of the first layer of toothed metal plate is close to the lower piece 5 of the second layer of toothed metal plate, the lower piece 5 of the second layer of toothed metal plate is close to the lower piece 7 of the third layer of toothed metal plate, and the bottom of the tooth gap of the lower piece 7 of the third layer of toothed metal plate is connected to the glue discharge needle 9, and is close to the bottom plate 10. The pressing plate 2 and the bottom plate 10 are connected to each other by screws, and the lower pieces 3, 5, 7 of the toothed metal plate are fixed between the pressing plate 2 and the bottom plate 10 to form a fixed assembly. In the upper piece part, the upper piece 4 of the first layer of toothed metal plate is connected ( Figure 2 The lever 32 (4, 5) in the middle, the second layer of toothed metal plate upper piece 6 is connected to the lever 18, and the third layer of toothed metal plate upper piece 8 is connected to the lever 32 (3, 6). The suspension rod 12 is connected to the suspension rod connector 15, and the suspension rod connector 15 is connected to the bearing 14 and the slider 13 to achieve the up and down movement function. The suspension rod pull-back spring 16 is connected above the bearing 14, and the bearing 14 is close to the lever 18. The lever 18 is connected to the lever installation rod 17 and the glue amount adjustment rod 19, and the glue amount adjustment rod 19 is connected to the shaft 21, the bearing 20 and the cam 22. The shaft 21 is connected to the gear 23, and the gear 23 is connected to the glue dripping motor (1) 24. In reference Figure 2 In the embodiment, the glue dripping motor (2) 33 controls the rotation of the cam 34 (3, 4, 5, 6) through the lever 32. Each time the lever 32 rotates, the end of the lever 32 is rhythmically pressed down, and the head of the lever 32 is tilted, so that the upper pieces 4 and 8 of the toothed metal plates are driven to open and close the first and third layers of the toothed metal plates. The glue dripping motor (1) 24 controls the rotation of the cam 22 (1, 2) through the lever 18 alone, driving the second layer of the toothed metal plates to open and close, so as to achieve the purpose of adjusting the amount of glue in and out.

[0034] Working process: In the example Figure 2In the process, the glue dripping motor 24 rotates, driving the gear 23, the shaft 21 and the cam 22. When the cam 22 contacts the corresponding bearing 20, it will press down the end of the lever 18, and at the same time, the right end of the lever 18 will tilt upward to lift the bearing 14 upward, and the slider 13 fixed to the bearing 14 will also lift upward, driving the suspension rod connector 15 and the suspension rod 12 to move upward together, and finally lift the upper piece of the second layer of toothed metal plate upward. When the cam 22 is not in contact with the lever 18, the lever 18 loses the pressure effect and tends to a balanced state, and the suspension rod pull-back spring 16 will pull the slider 13, the suspension rod connector 15 and the bearing 14 back downward to achieve the purpose of closing the upper piece of the second layer of toothed metal plate. Similarly, the glue dripping motor (2) 33 controls the rotation of the cam 34 (3, 4, 5, 6) to control the opening and closing of the first and third layers of toothed metal. The different angles of the cam will control the opening and closing of different toothed metal plates. Through the cooperation of the six cams, the purpose of squeezing glue into the glue dripping tube can be achieved.

[0035] Example 2

[0036] Reference Figure 4 A multi-channel, digitally displayable glue adjustment, self-cleaning automatic dispensing equipment includes a frame 1, a glue dispenser base 2, a horizontal displacement adjustment structure 3, a vertical displacement adjustment structure 11, a horizontal displacement adjustment motor 4, a vertical displacement adjustment motor 5, a glue dispenser connecting frame 6, a glue dispenser head 7, a first-layer toothed metal plate hanger 8, a second-layer toothed metal plate hanger 9, a third-layer toothed metal plate hanger 10, a head mounting plate 12, a camshaft 13, and a toothed metal plate lifting motor 14.

[0037] The glue dropper head 7 includes a glue dropper container 71, a first layer of toothed metal plate 72, a second layer of toothed metal plate 73, a third layer of toothed metal plate 74, a pressure plate 75, a multi-needle tube 76, a head bottom plate 77 and a head mounting plate 12. The third layer of toothed metal plate 74 is connected to the multi-needle tube 76 so that the glue in the gap between its teeth flows into the multi-needle tube 76. The pressure plate 75 is used to seal the glue dropper container to prevent glue leakage. The head mounting plate 12 is used to fix the entire glue dropper head to prevent it from shaking. The pressure interlayer 77 is used to clamp the first layer of toothed metal plate 72, the second layer of toothed metal plate 73 and the third layer of toothed metal plate 74 to ensure that there is no gap between the three layers of toothed metal plates to cause glue leakage.

[0038] Wherein: the glue dispenser base 2 is connected to the frame 1, and the glue dispenser connecting frame 6 is connected to the glue dispenser base 2; the horizontal displacement adjustment structure 3 is connected to the glue dispenser connecting frame 6, and the horizontal displacement adjustment motor 4 is connected to the horizontal displacement adjustment structure 3, which is used to move the glue dispenser head in the horizontal direction; the vertical displacement adjustment structure 11 is connected to the glue dispenser base 2, and the vertical displacement adjustment motor 5 is connected to the glue dispenser connecting frame 6, which is used to move the glue dispenser head in the vertical direction; the lower end of the first layer of toothed metal plate suspension rod 8 is connected to the first layer of the glue dispenser head 7; The upper piece of the first layer of toothed metal plate 72 is connected to the suspension rod connection block at the upper end, and the suspension rod connection block is connected to the camshaft 13 by a lever 78; the lower end of the second layer of toothed metal plate suspension rod 9 is connected to the upper piece of the second layer of toothed metal plate 73 in the glue dispensing machine head 7, and the upper end is connected to the suspension rod connection block, and the suspension rod connection block is connected to the camshaft 13 by a lever 78; the lower end of the third layer of toothed metal plate suspension rod 10 is connected to the upper piece of the third layer of toothed metal plate 74 in the glue dispensing machine head 7, and the upper end is connected to the suspension rod connection block, and the suspension rod connection block is connected to the camshaft 13 by a lever 78. The camshaft 13 is connected to the toothed metal plate lifting motor 14. The glue dispensing machine lifting motor uses the cam on the rotating shaft to press down one end of the lever 78, and the other end will lift the upper piece of the corresponding toothed metal plate, so that the glue in the glue container 71 can pass through the first layer of toothed metal plate, the second layer of toothed metal plate and the third layer of toothed metal plate to reach the multi-needle tube 76;

[0039] Working process: place the piezoelectric electronics on the conveyor belt, move the glue dispenser to the corresponding position, and adjust the position according to the glue groove of the piezoelectric electronics. Specifically, the glue dispenser head 7 moves by adjusting the horizontal displacement adjustment structure 3, and controlling the horizontal displacement adjustment motor 4 to move the front and rear positions of the glue dispenser head 7, so that the multi-needle tube 76 of the glue dispenser head 7 is located above the piezoelectric electronic glue groove in the horizontal direction, and then move the vertical displacement adjustment structure 11, and control the vertical displacement adjustment motor 5 to place the multi-needle tube of the glue dispenser head 7 at a suitable position on the piezoelectric electronic glue groove. After adjusting the position, fill the glue container 71 with an appropriate amount of glue, and click the start button on the operation panel. The PLC control program will operate the toothed metal plate lifting motor 14 to lift the upper piece of the first toothed metal plate 72, so that the glue in the glue container 71 flows into the tooth gap of the lower piece of the first toothed metal plate 72. When the upper sheet of the first layer of toothed metal plate 72 rises to a certain height, the PLC control program will stop lifting the upper sheet of the first layer of toothed metal plate 72, and simultaneously lift the upper sheet of the second layer of toothed metal plate 73, and raise it to the same height as the upper sheet of the first layer of toothed metal plate 72, and then lift it synchronously. When the upper sheets of the two metal plates reach the specified position, the upper sheet of the first toothed metal plate 72 is pressed down, so that the glue flows into the tooth gap in the lower sheet of the second layer of toothed metal plate 73 under pressure, and the excess glue is squeezed back into the glue container. The closed first layer of toothed metal plate 72 can also isolate the influence of the glue in the container on the toothed metal plate. After the first layer of toothed metal plate 72 is completely closed, the PLC controls the toothed metal plate lifting motor 14 to lift the upper piece of the third layer of toothed metal plate 74, and releases the control of the upper piece of the second layer of toothed metal plate 73, allowing the pull-back spring to close the upper piece of the second layer of toothed metal plate 73, squeezing the glue so that the glue flows into the tooth gap of the third toothed metal plate. The glue entering the tooth gap of the third toothed metal plate can be dripped into the glue groove of the piezoelectric electronics through the multi-needle tube 76. Among them, the first layer of toothed metal plate 72 and the second layer of toothed metal plate 73 play an important role in the glue dripping machine head 7. The height of their lifting directly affects the amount of glue entering. The higher the lifting, the larger the tooth gap, and the more glue can be stored. The lower the lifting, the smaller the tooth gap, and it is impossible to store more glue. The lifting height is controlled by parameters and can be set in the PLC program. Therefore, in the actual process, the present invention can control the amount of glue dripping according to the actual effect of the sealing of the piezoelectric electronic ceramics. It only needs to modify the parameters of the PLC program and fine-tune the rotation angle of the core structure without changing the model structure. However, the traditional glue dripping machine cannot achieve this function. The depth of the double holes of the traditional glue dripping machine determines the amount of glue dripping. To change the dripping amount, the depth of the double holes needs to be modified, which requires changing the model drawing, which is very inconvenient.

[0040] Example 3

[0041] Reference Figure 4As another preferred embodiment of the present invention, the difference between this embodiment and embodiment 2 is that the purpose of the linkage of the four parts of the horizontal displacement adjustment structure 3, the vertical displacement adjustment structure 11, the horizontal displacement adjustment motor 4, and the vertical displacement adjustment motor 5 is different. In embodiment 2, the four parts of the horizontal displacement adjustment structure 3, the vertical displacement adjustment structure 11, the horizontal displacement adjustment motor 4, and the vertical displacement adjustment motor 5 are moved to move the multi-needle tube 76 of the glue dropper head 7 to a suitable position on the piezoelectric electronic glue tank, while in embodiment 3, these four parts are controlled to move the entire glue dropper head 7 to the rear side of the glue dropper base 2, sink the entire glue dropper head into the water tank for soaking, and dilute the glue remaining in the glue dropper head 7 by soaking, so as to ensure that the glue dropper head 7 can operate normally in subsequent work. This process is all controlled by the machine, and does not require manual cleaning and disassembly by employees, which brings great convenience and certain safety to employees' work and avoids direct contact of irritating glue with employees' skin.

[0042] Working process: When the glue dispenser head 7 finishes working, the staff will place the water tank to the rear side of the glue dispenser base 2 and fix it. Then, the horizontal displacement adjustment motor 4 is controlled through the PLC visual interface to move the glue dispenser head 7 to a suitable position along the horizontal displacement adjustment structure 3, and then the vertical displacement adjustment motor 5 is controlled to move the glue dispenser head 7 to the water tank along the vertical displacement adjustment structure 11 to complete the soaking and cleaning operation. If an obstacle occurs during the movement of the glue dispenser head 7, it can be flexibly selected to move horizontally or vertically. In the present invention, there is no order of precedence in the two directions of movement, and the movement direction can be changed according to the operation of the employee.

[0043] Advantages of the Invention

[0044] 1. Simple manufacturing and convenient operation. The present invention replaces the double-hole long-axis glue transport device of the traditional glue dripping machine, and uses a three-layer toothed metal plate as the core device for transporting glue. First, the production process of this product is simple. It only requires material selection, tempering, drilling, quenching, and slow-feed wire cutting to process the tooth shape of the metal plate, and then directly grind it flat with a surface grinder. The above-mentioned processing technology greatly reduces the various tolerance requirements of the long-axis glue dripping machine, thereby greatly reducing the manufacturing cost, achieving the purpose of high precision and simple process. Second, the machine head is a seamless structure, which is the technical focus of the present invention. This function avoids the space for glue to remain in the machine head, which also avoids the hardening of glue after the machine head has been working for a long time. It does not require regular cleaning and supports continuous long-term work. Third, after the first layer of toothed metal plate is pulled open, the second layer of metal plate also starts to move up. When the second layer of metal plate moves up to a certain height, the first layer of toothed metal plate is pressed down in the tooth gap between the first and second layers of toothed metal plate, pressing the excess glue back into the glue container, avoiding the glue retention at the glue inlet, so that the glue inlet will not harden, ensuring that the glue in each tooth gap is very uniform, and ensuring product quality.

[0045] 2. Safe operation, environmental protection and high efficiency. The traditional double-hole long shaft is difficult to clean, especially when installed in the equipment, the cleaning difficulty is greatly increased. All cleaning operations are to disassemble the double-hole long shaft and clean it separately, which brings great inconvenience and difficulty to the employees' operation. In addition, the traditional glue dispenser is used for the transportation and dripping of chemical glue, and the employees will inevitably come into direct contact with the chemical glue during the disassembly and assembly process. In the actual process, the skin that has been in contact with the glue will produce adverse reactions such as allergies and itching, which is not conducive to the health of the employees. The horizontal and vertical movement functions added in the present invention can bring operational convenience to employees. Employees do not need to disassemble the parts inside the glue dispenser head, etc., but only need to operate the visual panel provided by the PLC to sink the glue dispenser head into the diluent container for automatic cleaning and other steps to complete the cleaning. At the same time, the time and number of cleaning of this design can be controlled by data, and the cleaning and return work of going to and from work can be automatically performed by the machine, which greatly improves the work efficiency, greatly improves the ease of operation, avoids physical harm to workers, shortens the time cost of equipment cleaning, and greatly improves the maintainability and humanization of the equipment.

Claims

1. A multi-channel, digitally displayable, self-cleaning automatic dispensing device, comprising a dispensing head, a dispensing frame and a cleaning tank, characterized in that: The glue dispensing machine head is composed of three layers of multi-toothed seamless metal plates; the metal plates are controlled by two motors respectively; the transmission structure of the motor and the metal plate is a lever; the rebound structure of the metal plate is a spring; the motor controls the connecting rod to rotate the cam, and the eccentric structure of the cam presses down the lever; the end of the lever is connected to the cam, and the first section is connected to the multi-toothed seamless metal plate, so that the metal plate can be opened and closed regularly under the rotation of the motor; the number of the metal plates should be arranged in a 1:2 ratio with the cam and the lever.

2. As described in claim 1, the glue dripping rack is characterized in that: the glue dripping rack includes a glue dripping head and two motors for controlling the up and down and forward and backward movement of the glue dripping head; the glue dripping rack includes a base and a cleaning tank; the glue dripping rack has two left and right columns to support the glue dripping head.

3. As described in claim 1, the three-layer multi-tooth seamless metal plate consists of an upper and lower plate, and the teeth of the upper plate and the teeth of the lower plate can be seamlessly connected; the first layer of plate plays a role in isolating glue; the second layer of plate plays a role in controlling the amount of glue dripping in; the third layer of plate plays a role in pressing in the glue; the three layers of plates are also seamlessly connected to effectively isolate the intrusion of glue.

Images