Glue supply device
Patent Information
- Application Number
- CN202522066494.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-09-25
AI Technical Summary
然而，在实际作业过程中，多个涂覆模组的胶体需求量及需求节奏存在显著差异
与现有技术相比，本实用新型的供胶设备的供胶泵机构通过在分歧座中设计稳压回流通道并配备气动回流阀组件，当某个供胶泵机构对应的出胶通道（即通往某一涂覆模组的管路）内胶液压力超过预设阈值时，气动回流阀组件会被该压力自动顶开，过高压力的胶液会通过打开的稳压回流通道直接回流到该供胶泵机构自身的进胶连接通道（即泵的入口端），从而实时、动态地调节该路输出的胶液压力，防止供胶压力过高，显著提升供胶压力稳定性，保证了涂覆模组的涂覆质量，即使多个涂覆模组的需求量和节奏差异很大，也能有效抑制各自输出管路内的压力波动，确保输送到每个涂覆模组的胶体压力保持相对恒定。同时，供胶泵机构通过采用双层增压泵，在尺寸固定有限的加热压盘空间内提高了供胶能力，保证了有足够的供胶压力，无需额外增加增压泵模组数量，满足了不同涂覆模组的多样化供胶需求，提升了涂胶系统的整体作业性能。因此，本实用新型的供胶设备在加热压盘的尺寸固定限定的情况下，可保证供胶压力稳定性。
Smart Images
Figure CN224736644U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial automated glue application system technology, and in particular to a glue supply device. Background Technology
[0002] In existing adhesive coating systems, the adhesive supply equipment plays a crucial role in accurately delivering the adhesive to the coating module, providing the material basis for the coating module to perform workpiece coating operations. Its specific workflow is as follows: The lifting drive mechanism of the adhesive supply equipment first drives the heating platen to descend, allowing it to enter the adhesive tank and seal it. Subsequently, the heating platen heats the solid adhesive inside the tank, causing it to transform into a liquid adhesive. Finally, a booster pump module extracts and delivers the adhesive, thus continuously supplying adhesive to the coating module. To ensure efficient adhesive application, adhesive supply equipment typically incorporates multiple booster pump modules on a heated pressure plate. Each booster pump module has two adhesive output pipes to deliver adhesive separately, thus enabling simultaneous adhesive supply to multiple coating modules. However, in actual operation, the adhesive demand and timing vary significantly among the multiple coating modules. Directly employing this split-flow method would cause fluctuations in adhesive pressure within each pipe, potentially resulting in excessively high or low pressure. This pressure instability directly impacts the coating quality of the coating modules, potentially causing uneven coating coverage or coating trajectory deviation. Meanwhile, since the size of the heating platen is fixed, the number of booster pump modules that can be installed on the same size heating platen is limited. It is impossible to adjust and ensure the glue supply pressure by adding additional booster pump modules, which makes it difficult to meet the diverse glue supply needs of different coating modules and restricts the improvement of the overall performance of the coating system.
[0003] Therefore, it is necessary to provide a glue supply device that can ensure stable glue supply pressure under the condition that the size of the heating pressure plate is fixed. Utility Model Content
[0004] The purpose of this invention is to provide a glue supply device that can ensure stable glue supply pressure under the condition that the size of the heating pressure plate is fixed.
[0005] To achieve the above objectives, this utility model provides a glue supply device, including a lifting drive mechanism, a heating pressure plate, and a glue supply pump mechanism. The output end of the lifting drive mechanism is connected to the heating pressure plate, and the lifting drive mechanism is used to drive the heating pressure plate to rise and fall. The heating pressure plate has several glue inlets arranged vertically through the heating pressure plate. Several glue supply pump mechanisms are respectively disposed on the heating pressure plate. Each glue supply pump mechanism includes a branching seat, a double-layer booster pump, a motor drive module, and a pneumatic return valve assembly. The branching seat is disposed on the upper part of the heating pressure plate, and the double-layer booster pump is disposed above the branching seat. The double-layer booster pump has two compression stage units arranged vertically stacked. The motor drive module is disposed above the double-layer booster pump and connected to the double-layer booster pump. The motor drive module is used to drive the double-layer booster pump. The pump operates; the branching seat is provided with an adhesive inlet connection channel, an adhesive outlet channel, and a pressure-stabilizing reflux channel. The adhesive inlet connection channel connects the adhesive inlet to the pressure-boosting inlet of the double-layer booster pump. One end of the adhesive outlet channel connects to the pressure-boosting outlet of the double-layer booster pump, and the other end of the adhesive outlet channel forms an adhesive outlet on the side wall of the branching seat. One end of the pressure-stabilizing reflux channel connects to the adhesive outlet channel, and the other end of the pressure-stabilizing reflux channel connects to the adhesive inlet connection channel. The pneumatic reflux valve assembly is inserted into the pressure-stabilizing reflux channel. The pneumatic reflux valve assembly is used to block or open the pressure-stabilizing reflux channel. When the adhesive pressure in the adhesive outlet channel exceeds a preset threshold, the pneumatic reflux valve assembly opens the pressure-stabilizing reflux channel, allowing the adhesive in the adhesive outlet channel to flow back to the adhesive inlet connection channel through the pressure-stabilizing reflux channel.
[0006] Preferably, the glue supply equipment further includes a frame, the lifting drive mechanism is disposed on the frame, and the frame is provided with a glue bucket placement position located below the heating pressure plate. Preferably, the frame is provided with a plurality of positioning blocks for positioning the glue bucket in the circumferential direction of the glue bucket placement position. Preferably, the glue supply device further includes an exhaust valve module, the heating pressure plate is provided with a through exhaust hole, and the exhaust valve module is inserted into the exhaust hole and used to open or close the exhaust hole. Preferably, several of the glue supply pump mechanisms are arranged side by side on the heating platen along the same straight line. Preferably, the pressure-stabilized reflux channel includes a first pressure-stabilized reflux branch, a reflux valve mounting hole, and a second pressure-stabilized reflux branch. One end of the first pressure-stabilized reflux branch is connected to the position between the two ends of the dispensing channel, and the other end of the first pressure-stabilized reflux branch is connected to the reflux valve mounting hole. The pneumatic reflux valve assembly is installed in the reflux valve mounting hole. One end of the second pressure-stabilized reflux branch is connected to the reflux valve mounting hole, and the other end of the second pressure-stabilized reflux branch is connected to the dispensing connection channel. Preferably, the side wall of the branch seat is provided with a glue supply connector that is connected to the glue supply outlet. Preferably, the glue supply device further includes a glue discharge valve assembly, and the branch seat is also provided with a glue discharge channel. One end of the glue discharge channel is connected to the position between the two ends of the glue inlet connection channel, and the other end of the glue discharge channel forms a glue discharge outlet on the side wall of the branch seat. The glue discharge valve assembly passes through the glue discharge outlet and is inserted into the glue discharge channel. The glue discharge valve assembly is used to open or close the glue discharge channel. Preferably, the glue supply device further includes a glue discharge collection box, which is disposed on the heating pressure plate and located below the glue discharge valve assembly. The glue discharge collection box has a glue discharge collection groove with the opening facing upward. When the glue discharge valve assembly opens the glue discharge channel, the glue in the glue discharge channel can fall into the glue discharge collection groove through the glue discharge valve assembly. Preferably, a sealing ring is provided on the outer periphery of the heating plate, and the sealing ring is used to seal between the heating plate and the inner wall of the glue bucket. Compared with the prior art, the glue supply pump mechanism of the glue supply equipment of this utility model is designed with a pressure stabilizing reflux channel in the branch seat and equipped with a pneumatic reflux valve assembly. When the glue pressure in the glue outlet channel (i.e. the pipeline leading to a certain coating module) of a certain glue supply pump mechanism exceeds a preset threshold, the pneumatic reflux valve assembly will be automatically opened by the pressure. The glue with excessive pressure will flow back directly to the glue inlet connection channel (i.e. the pump inlet end) of the glue supply pump mechanism itself through the opened pressure stabilizing reflux channel. This allows for real-time and dynamic adjustment of the glue pressure output of that path, preventing excessive glue supply pressure, significantly improving glue supply pressure stability, and ensuring the coating quality of the coating module. Even if the demand and rhythm of multiple coating modules vary greatly, it can effectively suppress pressure fluctuations in their respective output pipelines and ensure that the glue pressure delivered to each coating module remains relatively constant. Meanwhile, the glue supply pump mechanism, by employing a double-layer booster pump, improves the glue supply capacity within the limited space of the heating pressure plate, ensuring sufficient glue supply pressure. This eliminates the need to increase the number of booster pump modules, meeting the diverse glue supply needs of different coating modules and improving the overall operational performance of the coating system. Therefore, the glue supply equipment of this invention can guarantee stable glue supply pressure even with a fixed heating pressure plate size. Attached Figure Description
[0007] Figure 1 This is a three-dimensional structural diagram of the glue supply device of this utility model.
[0008] Figure 2 yes Figure 1 A magnified view of point S in the middle.
[0009] Figure 3 This is a three-dimensional structural diagram of the heating pressure plate of the glue supply device of this utility model.
[0010] Figure 4 This is a three-dimensional structural diagram of the glue supply pump mechanism of the glue supply equipment of this utility model.
[0011] Figure 5 This is a top view of the glue supply pump mechanism of the glue supply equipment of this utility model.
[0012] Figure 6 It is along Figure 5 A cross-sectional view along the AA direction.
[0013] Figure 7 It is along Figure 5 Cross-sectional view along the BB direction.
[0014] Figure 8 It is along Figure 5 A cross-sectional view along the CC direction.
[0015] Figure 9 It is along Figure 5 A cross-sectional view along the DD direction. Detailed Implementation
[0016] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.
[0017] Please see Figures 1 to 9This utility model provides a glue supply device 100, including a lifting drive mechanism 1, a heating pressure plate 2, and a glue supply pump mechanism 3. The output end of the lifting drive mechanism 1 is connected to the heating pressure plate 2, and the lifting drive mechanism 1 is used to drive the heating pressure plate 2 to rise and fall. The heating pressure plate 2 is provided with a plurality of glue inlets 21 arranged vertically through the heating pressure plate 2. A plurality of glue supply pump mechanisms 3 are respectively arranged on the heating pressure plate 2. Each glue supply pump mechanism 3 includes a branch seat 31, a double-layer booster pump 32, a motor drive module 33, and a pneumatic return valve assembly 34. The branch seat 31 is arranged on the upper part of the heating pressure plate 2, and the double-layer booster pump 32 is arranged above the branch seat 31. The double-layer booster pump 32 has two compression stage units 323 arranged vertically stacked. The motor drive module 33 is arranged above the double-layer booster pump 32 and connected to the double-layer booster pump 32, and the motor drive module 33 is used to drive the double-layer booster pump 32 to work. A glue inlet connection is provided in the branch seat 31. Channel 311, dispensing channel 312, and pressure-stabilizing return channel 313 are connected. The dispensing channel 311 connects the dispensing port 21 and the pressure inlet 321 of the double-layer booster pump 32. One end of the dispensing channel 312 connects to the pressure outlet 322 of the double-layer booster pump 32, and the other end of the dispensing channel 312 forms a dispensing outlet 314 on the side wall of the branch seat 31. One end of the pressure-stabilizing return channel 313 connects to the dispensing channel 312. The other end of channel 313 is connected to the glue inlet connection channel 311. The pneumatic reflux valve assembly 34 is inserted into the pressure stabilizing reflux channel 313. The pneumatic reflux valve assembly 34 is used to block or open the pressure stabilizing reflux channel 313. When the glue pressure in the glue outlet channel 312 exceeds the preset threshold, the pneumatic reflux valve assembly 34 opens the pressure stabilizing reflux channel 313, so that the glue in the glue outlet channel 312 flows back to the glue inlet connection channel 311 through the pressure stabilizing reflux channel 313. In this embodiment, the lifting drive mechanism 1 can be a common linear drive device such as a cylinder, hydraulic cylinder, or electric push rod. Specifically, the output end of the lifting drive mechanism 1 is fixedly connected to the heating pressure plate 2 via bolts, connecting rods, or other connecting parts to ensure the stability of the heating pressure plate 2 during its lifting process. The heating pressure plate 2 is equipped with heating elements, such as heating wires, to heat the solid adhesive in the glue container, converting it into liquid adhesive. The number of glue inlets 21 can be set according to the number of glue supply pump mechanisms 3, with each glue inlet 21 corresponding to a different glue supply pump mechanism 3. The diameter of each glue inlet 21 can be designed according to the actual adhesive flow requirements. The dual-stage booster pump comprises two stacked compression stage units 323, which are used to compress and deliver fluid to a high pressure. Each compression stage unit 323 has a separate inlet and outlet for compressing the fluid. Specifically, each compression stage unit 323 contains a pair of rotors rotating in opposite directions, forming an annular gap with a compression chamber. As the rotors rotate, the fluid is compressed in the compression chamber and pushed to the next compression stage unit 323 or the final booster outlet 322.
[0018] Specifically, the dual-layer booster pump 32 adopts a dual-layer structure design, which can provide greater glue supply pressure and flow rate within a limited space. The motor drive module 33 includes a motor and a coupling assembly. The motor is connected to the dual-layer booster pump 32 through the coupling assembly, providing power to the dual-layer booster pump 32. Its speed can be adjusted according to actual needs to control the glue supply. Please see Figure 1 The glue supply equipment 100 also includes a frame 4, a lifting drive mechanism 1 is mounted on the frame 4, and a glue bucket placement position 41 is provided on the frame 4 below the heating pressure plate 2. Specifically, the size of the glue bucket placement position 41 matches the size of the glue bucket, facilitating the placement and positioning of the glue bucket. Furthermore, the frame 4 is provided with several positioning blocks 42 for positioning the glue bucket in the circumferential direction of the glue bucket placement position 41. The positioning blocks 42 are fixed to the frame 4 by bolts, and the number of them is generally 3-4, which are evenly distributed in the circumference of the glue bucket placement position 41. This can effectively prevent the glue bucket from shifting or shaking during operation, and ensure that the heating pressure plate 2 can accurately enter the glue bucket and form a seal. However, the number of positioning blocks 42 is not limited to this and can be flexibly adjusted according to the size of the glue bucket. Please see Figures 4 to 9 In one embodiment, the glue supply device 100 further includes an exhaust valve module 5. The heating pressure plate 2 has a through-hole vent 22. The exhaust valve module 5 is inserted into the exhaust hole 22 and is used to open or close the exhaust hole 22. During the process of the heating pressure plate 2 descending into the glue bucket, opening the exhaust valve module 5 allows the air in the glue bucket to be discharged through the exhaust hole 22, preventing excessive air pressure in the glue bucket from affecting the descent of the heating pressure plate 2. After the heating pressure plate 2 forms a seal on the glue bucket, the exhaust valve module 5 is closed to ensure the sealing of the glue bucket and prevent glue leakage. Please see Figure 1 and Figure 4 In one embodiment, several glue supply pump mechanisms 3 are arranged side by side on the heating pressure plate 2 along the same straight line. This arrangement can make full use of the space of the heating pressure plate 2, making the structural layout more compact and reasonable, and also facilitating the installation, debugging and maintenance of the equipment. Please see Figures 4 to 9In one embodiment, the pressure-stabilized return channel 313 includes a first pressure-stabilized return branch 3131, a return valve mounting hole 3132, and a second pressure-stabilized return branch 3133. One end of the first pressure-stabilized return branch 3131 is connected to the position between the two ends of the glue outlet channel 312, and the other end of the first pressure-stabilized return branch 3131 is connected to the return valve mounting hole 3132. The pneumatic return valve assembly 34 is installed in the return valve mounting hole 3132. One end of the second pressure-stabilized return branch 3133 is connected to the return valve mounting hole 3132, and the other end of the second pressure-stabilized return branch 3133 is connected to the glue inlet connection channel 311. When the adhesive pressure in the dispensing channel 312 exceeds the preset value, the valve core of the pneumatic reflux valve assembly 34 opens under pressure, and the adhesive flows back to the dispensing connection channel 311 through the first pressure-stabilizing reflux branch 3131, the reflux valve mounting hole 3132, and the second pressure-stabilizing reflux branch 3133 in sequence, thereby reducing the adhesive pressure in the dispensing channel 312 and ensuring the stability of the adhesive pressure.
[0019] Please see Figure 4 , Figure 5 and Figure 7 In one embodiment, the side wall of the branch seat 31 is provided with a glue supply connector 315 that connects to the glue supply outlet 314. The glue supply connector 315 adopts a standard interface design, such as a threaded interface, to facilitate connection with the glue tube of the coating module and ensure the sealing and reliability of the connection. Please see Figure 1 , Figure 2 and Figure 6 In one embodiment, the glue supply device 100 further includes a glue discharge valve assembly 6, and a glue discharge channel 316 is provided in the branch seat 31. One end of the glue discharge channel 316 is connected to the position between the two ends of the glue inlet connection channel 311, and the other end of the glue discharge channel 316 forms a glue discharge outlet 317 on the side wall of the branch seat 31. The glue discharge valve assembly 6 passes through the glue discharge outlet 317 and is inserted into the glue discharge channel 316. The glue discharge valve assembly 6 is used to open or close the glue discharge channel 316. When the equipment needs to be cleaned or the glue type is changed, the glue discharge valve assembly 6 is opened, and the glue in the glue inlet connection channel 311 can be discharged through the glue discharge channel 316 and the glue discharge outlet 317, which facilitates the maintenance and upkeep of the equipment. Furthermore, the glue supply device 100 also includes a glue discharge collection box 7, which is disposed on the heating pressure plate 2 and located below the glue discharge valve assembly 6. The glue discharge collection box 7 has a glue discharge collection trough 71 with its opening facing upwards. When the glue discharge valve assembly 6 opens the glue discharge channel 316, the glue in the glue discharge channel 316 can fall into the glue discharge collection trough 71 through the glue discharge valve assembly 6. The glue discharge collection box 7 can collect the discharged glue, preventing glue from contaminating the equipment and working environment, and also facilitating the recycling and disposal of the glue. Please see Figure 1In one embodiment, a sealing ring 23 is fitted around the outer periphery of the heating pressure plate 2. The sealing ring 23 is used to seal between the heating pressure plate 2 and the inner wall of the glue container. The sealing ring 23 is made of a high-temperature resistant and wear-resistant elastic material, such as fluororubber, which can effectively ensure the sealing between the heating pressure plate 2 and the glue container, and prevent glue leakage and air from entering the glue container. Combination Figures 1 to 9 The working process of the glue supply device 100 of this utility model is as follows: First, the glue bucket containing solid colloid is placed on the glue bucket placement position 41 of the frame 4 and positioned by the positioning block 42. Then, the lifting drive mechanism 1 drives the heating pressure plate 2 to descend, allowing it to enter the glue bucket. At this time, the sealing ring 23 is in close contact with the inner wall of the glue bucket, forming a seal. Simultaneously, the exhaust valve module 5 is opened to expel the air from the glue bucket, and then the exhaust valve module 5 is closed. Next, the heating pressure plate 2 heats the solid colloid in the glue bucket, converting it into liquid glue. Subsequently, the motor drive module 33 drives the double-layer booster pump 32 to work, and the liquid glue flows through the glue inlet 21 and the glue inlet connection channel 311. The adhesive enters the double-layer booster pump 32, and after being pressurized by the double-layer booster pump 32, the adhesive enters the dispensing channel 312 and is delivered to the coating module through the dispensing port 314 and the dispensing connector 315. During the dispensing process, when the pressure of the adhesive in the dispensing channel 312 exceeds the preset threshold, the pneumatic reflux valve assembly 34 opens the pressure stabilizing reflux channel 313, and the adhesive flows back to the dispensing connection channel 311 through the pressure stabilizing reflux channel 313, thereby stabilizing the adhesive pressure. When it is necessary to discharge the adhesive, the dispensing valve assembly 6 is opened, and the adhesive falls into the dispensing collection trough 71 of the dispensing collection box 7 through the dispensing channel 316 and the dispensing valve assembly 6.
[0020] In summary, the glue supply pump mechanism 3 of the glue supply equipment 100 of this utility model is designed with a pressure-stabilizing reflux channel 313 in the branch seat 31 and equipped with a pneumatic reflux valve assembly 34. When the glue pressure in the glue outlet channel 312 (i.e. the pipeline leading to a certain coating module) of a certain glue supply pump mechanism 3 exceeds a preset threshold, the pneumatic reflux valve assembly 34 will be automatically opened by the pressure. The glue with excessive pressure will flow back directly to the glue inlet connection channel 311 (i.e. the pump inlet end) of the glue supply pump mechanism 3 itself through the opened pressure-stabilizing reflux channel 313, thereby adjusting the glue pressure output of the path in real time and dynamically, preventing the glue supply pressure from being too high, significantly improving the stability of the glue supply pressure, ensuring the coating quality of the coating module, and even if the demand and rhythm of multiple coating modules are very different, it can effectively suppress the pressure fluctuation in their respective output pipelines and ensure that the glue pressure delivered to each coating module remains relatively constant. Meanwhile, the glue supply pump mechanism 3, by employing a double-layer booster pump 32, improves the glue supply capacity within the limited space of the heating pressure plate 2, ensuring sufficient glue supply pressure. This eliminates the need to increase the number of booster pump modules, meeting the diverse glue supply needs of different coating modules and improving the overall operational performance of the coating system. Therefore, the glue supply device 100 of this invention can guarantee stable glue supply pressure even with a fixed size of the heating pressure plate 2.
[0021] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.
Claims
1. A glue supply device, characterized in that, include: Lifting drive mechanism; A heating pressure plate is provided, and the output end of the lifting drive mechanism is connected to the heating pressure plate. The lifting drive mechanism is used to drive the heating pressure plate to rise and fall. The heating pressure plate is provided with a plurality of glue inlets arranged vertically through the plate. A plurality of glue supply pump mechanisms are respectively disposed on the heating pressure plate. Each glue supply pump mechanism includes a branching seat, a double-layer booster pump, a motor drive module, and a pneumatic reflux valve assembly. The branching seat is disposed on the upper part of the heating pressure plate, and the double-layer booster pump is disposed above the branching seat. The double-layer booster pump has two compression stage units arranged vertically. The motor drive module is disposed above the double-layer booster pump and connected to it, and is used to drive the double-layer booster pump. The branching seat has a glue inlet connection channel, a glue outlet channel, and a pressure stabilizing reflux channel. The glue inlet connection channel connects the glue inlet to the double-layer booster pump. Between the pressurization inlets of the double-layer booster pump, one end of the dispensing channel is connected to the pressurization outlet of the double-layer booster pump, and the other end of the dispensing channel forms a dispensing port on the side wall of the branch seat. One end of the pressure-stabilizing reflux channel is connected to the dispensing channel, and the other end of the pressure-stabilizing reflux channel is connected to the inlet connection channel. The pneumatic reflux valve assembly is inserted into the pressure-stabilizing reflux channel and is used to block or open the pressure-stabilizing reflux channel. When the adhesive pressure in the dispensing channel exceeds a preset threshold, the pneumatic reflux valve assembly opens the pressure-stabilizing reflux channel, allowing the adhesive in the dispensing channel to flow back to the inlet connection channel through the pressure-stabilizing reflux channel.
2. The adhesive supply equipment according to claim 1, characterized in that, It also includes a frame, on which the lifting drive mechanism is mounted, and on which a glue bucket placement position is provided below the heating pressure plate.
3. The adhesive supply equipment according to claim 2, characterized in that, The frame is provided with a plurality of positioning blocks in the circumferential direction of the glue bucket placement position for positioning the glue bucket.
4. The adhesive supply equipment according to claim 1, characterized in that, It also includes an exhaust valve module, wherein the heating pressure plate is provided with a through exhaust hole, and the exhaust valve module is inserted into the exhaust hole and used to open or close the exhaust hole.
5. The adhesive supply equipment according to claim 1, characterized in that, Several of the glue supply pump mechanisms are arranged side by side on the heating pressure plate along the same straight line.
6. The adhesive supply equipment according to claim 1, characterized in that, The pressure-stabilized reflux channel includes a first pressure-stabilized reflux branch, a reflux valve mounting hole, and a second pressure-stabilized reflux branch. One end of the first pressure-stabilized reflux branch is connected to the position between the two ends of the dispensing channel, and the other end of the first pressure-stabilized reflux branch is connected to the reflux valve mounting hole. The pneumatic reflux valve assembly is installed in the reflux valve mounting hole. One end of the second pressure-stabilized reflux branch is connected to the reflux valve mounting hole, and the other end of the second pressure-stabilized reflux branch is connected to the dispensing connection channel.
7. The adhesive supply equipment according to claim 1, characterized in that, The side wall of the branch seat is provided with a glue supply connector that is connected to the glue supply outlet.
8. The adhesive supply equipment according to claim 1, characterized in that, It also includes a glue drain valve assembly, and the branch seat is provided with a glue drain channel. One end of the glue drain channel is connected to the position between the two ends of the glue inlet connection channel, and the other end of the glue drain channel forms a glue drain outlet on the side wall of the branch seat. The glue drain valve assembly passes through the glue drain outlet and is inserted into the glue drain channel. The glue drain valve assembly is used to open or close the glue drain channel.
9. The adhesive supply equipment according to claim 8, characterized in that, It also includes a glue discharge collection box, which is disposed on the heating pressure plate and located below the glue discharge valve assembly. The glue discharge collection box has a glue discharge collection groove with the opening facing upward. When the glue discharge valve assembly opens the glue discharge channel, the glue in the glue discharge channel can fall into the glue discharge collection groove through the glue discharge valve assembly.
10. The adhesive supply equipment according to claim 1, characterized in that, A sealing ring is fitted around the outer periphery of the heating plate, and the sealing ring is used to seal between the heating plate and the inner wall of the glue bucket.