A screw-type glue feeding device

Abstract

This invention relates to a screw-type glue supply device, belonging to the technical field of glue supply equipment. The device includes a channel block, a feeding pipe, a pushing assembly, a servo drive assembly, and a screw pump. The channel block has a flow channel for glue to pass through. One end of the feeding pipe is mounted on the channel block, and the other end extends upwards, communicating with the flow channel. A first shut-off valve is installed at the upper part of the feeding pipe. The pushing assembly is mounted on the channel block and communicates with the flow channel. The servo drive assembly is mounted at the end of the feeding pipe furthest from the channel block, with its power output end located inside the feeding pipe. The screw pump is located inside the feeding pipe, with one end connected to the power output end of the servo drive assembly, and the other end rotatably mounted on the side wall of the flow channel. The screw pump has a drain hole and is used to adjust the glue viscosity and pump the glue in the flow channel towards the first shut-off valve. Therefore, this glue supply device enhances the stability of the glue output, has a reasonable structure, and is highly practical.

Description

Technical Field

[0001] This invention belongs to the technical field of glue supply equipment, and specifically relates to a screw-type glue supply device. Background Technology

[0002] In the semiconductor and new energy electronics industries, high-viscosity adhesives are often used to apply glue to PCB components to fix them in place. Most existing dispensing devices use an air pump to push the glue from the cylinder to the dispensing valve for dispensing. This type of glue supply method often results in unstable glue dispensing due to unstable air pressure or insufficient glue viscosity. Summary of the Invention

[0003] This invention provides a screw-type glue supply device to solve the technical problem of insufficient glue supply stability in existing glue supply devices.

[0004] This invention is achieved through the following technical solution: a screw-type glue supply device, comprising:

[0005] A channel block, wherein the channel block is provided with a flow channel for the glue to pass through;

[0006] A feeding pipe is installed at one end on the channel block and extends upward at the other end. The feeding pipe is connected to the flow channel. A first shut-off valve for discharging glue is installed at the upper part of the feeding pipe.

[0007] A pusher assembly is installed on the channel block and is connected to the flow channel. The pusher assembly is used to push the glue towards the feed tube through the flow channel.

[0008] A servo drive assembly is installed at the end of the feed tube away from the channel block, and the power output end of the servo drive assembly is located inside the feed tube;

[0009] A screw pump is located inside the feed pipe. One end of the screw pump is connected to the power output end of the servo drive assembly, and the other end of the screw pump extends downward. The screw pump is used to pump the glue in the flow channel to the first shut-off valve.

[0010] Optionally, to better implement the present invention, the servo drive component includes:

[0011] A servo motor, wherein the fixed end of the servo motor is installed at the end of the feeding tube away from the channel block, and the power output end of the servo motor is located inside the feeding tube;

[0012] A speed reducer is installed inside the feed pipe. One end of the speed reducer is connected to the power output end of the servo motor, and the other end of the speed reducer is connected to the screw pump. The speed reducer is used to adjust the transmission ratio between the servo motor and the screw pump.

[0013] Optionally, to better implement the present invention, the screw pump includes:

[0014] One end of the drive shaft is connected to the end of the reducer away from the servo motor, and the other end is connected to a first universal joint.

[0015] The connecting rod shaft is connected to the first universal joint at one end and to the second universal joint at the other end. Both the first universal joint and the second universal joint are used to adjust the steering.

[0016] A hollow screw, wherein the side wall of the hollow screw is provided with a plurality of drainage holes;

[0017] The bearing housing has one end of the hollow screw connected to the connecting rod shaft via the second universal joint, and the other end of the hollow screw rotatably mounted in the bearing housing.

[0018] A replenishment pipe is provided, and a replenishment channel is provided on the bottom wall of the channel block. The replenishment channel penetrates the bottom wall of the flow channel and is located below the feed pipe. The bearing seat is sealed and installed at one end of the replenishment channel located inside the flow channel. The replenishment pipe is installed at the end of the replenishment channel away from the flow channel. The replenishment channel is connected to the interior of the hollow screw.

[0019] Optionally, to better implement the present invention, the pusher assembly includes:

[0020] A pusher barrel is installed on the channel block at one end, the pusher barrel is connected to the flow channel, and the other end of the pusher barrel extends upward;

[0021] A glue bucket is installed inside the pusher bucket, and the glue bucket is used to supply glue into the flow channel;

[0022] A heating element is installed on the side wall of the pusher bucket, and the heating element is used to heat the glue in the glue bucket;

[0023] A pusher cylinder, the fixed end of which is installed at the end of the pusher barrel away from the channel block, and the power output end of which is located inside the glue barrel, is used to push the glue in the glue barrel into the flow channel.

[0024] Optionally, to better implement the present invention, the flow channel includes:

[0025] The first sub-channel is located inside the channel block and extends through both end faces of the channel block. The pusher bucket and the feed pipe are both located above the first sub-channel. The replenishment channel is connected to the first sub-channel. The bearing seat is installed at one end of the replenishment channel near the first sub-channel.

[0026] The second sub-channel has one end penetrating through the top wall of the channel block and communicating with the pusher bucket, and the other end communicating with the first sub-channel;

[0027] The third sub-channel has one end penetrating through the top wall of the channel block and connected to the feeding pipe, and the other end connected to the first sub-channel. The hollow screw passes through the third sub-channel and is rotatably mounted in the bearing seat.

[0028] Optionally, to better implement the present invention, a push rod is also included, wherein a push rod is sealed and inserted into the port of the first sub-channel near the end of the second sub-channel, and a second shut-off valve is detachably installed on the port of the first sub-channel near the end of the third sub-channel.

[0029] Optionally, to better implement the present invention, an observation window for observing the amount of glue used is installed on the side wall of the pusher bucket.

[0030] Optionally, to better implement the present invention, a control box is also included. The control box is installed on the bottom wall of the channel block, and a microcontroller is installed inside the control box. The pushing cylinder, the heating element, the push rod, and the servo motor are all electrically connected to the microcontroller.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] The screw-type glue supply device provided by this invention includes a channel block, a feeding pipe, a pushing assembly, a servo drive assembly, and a screw pump. The channel block has a flow channel for glue to pass through. One end of the feeding pipe is mounted on the channel block, and the other end extends upwards, communicating with the flow channel. A first shut-off valve for discharging glue is installed at the upper part of the feeding pipe. The pushing assembly is mounted on the channel block and communicates with the flow channel, pushing the glue through the flow channel towards the feeding pipe. The servo drive assembly is mounted at the end of the feeding pipe away from the channel block, with its power output end located inside the feeding pipe. The screw pump is located inside the feeding pipe, with one end connected to the power output end of the servo drive assembly, and the other end rotatably mounted on the side wall of the flow channel. The screw pump has a drain hole for pumping in a glue viscosity modifier, and is used to adjust the glue viscosity and pump the glue in the flow channel towards the first shut-off valve. Thus, the pushing assembly and the feeding pipe are both located on the top wall of the channel block and communicate with the flow channel within the channel block.

[0033] Through the above structure, the screw-type glue supply device provided by this invention solves the technical problem of insufficient glue supply stability in existing glue supply devices. Specifically, the pusher component pushes the glue into the flow channel, and the servo drive component pumps the glue in the flow channel to the first shut-off valve via a screw pump. Compared to existing air pumps that control the on / off state of the air pump for feeding, servo drive feeding controls the number of rotations and the rotation angle of the screw pump to draw glue from the flow channel to the first shut-off valve. This results in less glue dispensing jitter, higher precision, and reduces the impact of air pressure stability or glue viscosity issues on the glue dispensing volume. The screw pump adds glue viscosity modifier to the glue in the feed pipe through the drain hole to enhance the adhesive properties of the glue. Therefore, the screw-type glue supply device provided by this invention, with the help of a servo drive component driving the screw pump for glue supply, enhances the stability of the glue dispensing volume. It has a reasonable structure and strong practicality. In addition, while driving the glue pump to the first shut-off valve, the screw pump simultaneously introduces glue viscosity modifier into the glue to adjust the glue viscosity, resulting in a novel structure and strong practicality. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the screw-type glue supply device provided in an embodiment of the present invention;

[0036] Figure 2 This is a cross-sectional view of the screw-type glue supply device provided in an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the hollow screw in an embodiment of the present invention.

[0038] In the diagram: 1-Control box; 2-Operating switch; 3-Channel block; 4-Flow channel; 41-First sub-channel; 42-Second sub-channel; 43-Third sub-channel; 5-Feeding pipe; 6-First shut-off valve; 7-Pushing assembly; 71-Pushing bucket; 72-Glue bucket; 73-Heating element; 74-Pushing cylinder; 8-Servo drive assembly; 81-Servo motor; 82-Reducer; 91-Drive shaft; 92-Connecting rod shaft; 93-Hollow screw; 94-Bearing seat; 95-Replenishment pipe; 96-Replenishment channel; 10-Push rod; 11-Second shut-off valve; 12-Micro controller. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0040] Example 1:

[0041] This embodiment provides a screw-type glue supply device to solve the technical problem of insufficient glue supply stability in existing glue supply devices. The glue supply device includes a channel block 3, a feeding pipe 5, a pushing assembly 7, a servo drive assembly 8, and a screw pump, wherein:

[0042] The channel block 3 is a casting. The channel block 3 has a flow channel 4 for the glue to pass through. Specifically, by opening through holes and countersunk holes on the channel block 3, the flow channels 4 are interconnected inside the channel block 3 so that the glue can pass through and be cleaned.

[0043] The inner wall of the feeding pipe 5 is provided with a stator for use with a screw pump. The stator and the screw pump work together to draw glue. One end of the feeding pipe 5 is installed on the top wall of the channel block 3, and the other end extends upward. The feeding pipe 5 is connected to the flow channel 4 so that the glue in the flow channel 4 enters the feeding pipe 5. A first shut-off valve 6 for discharging glue is installed on the upper part of the feeding pipe 5. The first shut-off valve 6 is connected to an external coating device to complete the dispensing.

[0044] The pusher assembly 7 is installed on the top wall of the channel block 3. The pusher assembly 7 and the feeding pipe 5 are respectively located on both sides of the channel block 3. The pusher assembly 7 is connected to the flow channel 4. The pusher assembly 7 is used to push the glue in the pusher assembly 7 through the flow channel 4 to the feeding pipe 5 for glue supply.

[0045] The servo drive assembly 8 is installed at the end of the feeding tube 5 away from the channel block 3. The power output end of the servo drive assembly 8 is located inside the feeding tube 5. With the help of the high precision and low vibration of the servo drive assembly 8, the amount of glue supplied in the feeding tube 5 is controlled.

[0046] The screw pump is located inside the feed pipe 5. One end of the screw pump is connected to the power output end of the servo drive component 8, and the other end of the screw pump extends downward. The screw pump is used to pump the glue in the flow channel 4 to the first shut-off valve 6. Under the control of the servo drive component 8, the servo drive component 8 drives the screw pump to pump the glue in the flow channel 4 to the first shut-off valve 6.

[0047] Through the above structure, the screw-type glue supply device provided in this embodiment solves the technical problem of insufficient glue supply stability in the prior art. Specifically, the pusher assembly 7 pushes the glue into the flow channel 4, and the servo drive assembly 8 pumps the glue in the flow channel 4 into the first shut-off valve 6 through the screw pump. Compared with the existing air pump which controls the on and off of the air pump to achieve feeding, the servo drive feeding controls the number of rotations and the rotation angle of the screw pump to draw the glue in the flow channel 4 to the first shut-off valve 6. The glue dispensing vibration is small, the accuracy is high, and the influence of air pressure stability or glue viscosity problems on the glue dispensing volume is reduced. The screw pump adds glue viscosity modifier to the glue in the feed pipe 5 through the drain hole to enhance the adhesive performance of the glue. Therefore, the screw-type glue supply device provided in this embodiment uses the servo drive component 8 to drive the screw pump to supply glue, which enhances the stability of the glue output. It has a reasonable structure and strong practicality. In addition, while driving the glue pump to the first shut-off valve 6, the screw pump introduces the glue viscosity modifier into the glue to adjust the glue viscosity. It has a novel structure and strong practicality.

[0048] An optional implementation of this embodiment is as follows: The servo drive component 8 includes:

[0049] Servo motor 81, model D180M series servo motor 81 manufactured by Demark Motor Co., Ltd., has its fixed end installed at the end of the feed tube 5 away from the channel block 3, and its power output end located inside the feed tube 5.

[0050] The reducer 82 is a model 86 series reducer manufactured by Demark Motor Co., Ltd. The reducer 82 is installed in the feed pipe 5. One end of the reducer 82 is connected to the power output end of the servo motor 81, and the other end of the reducer 82 is connected to the screw pump. The reducer 82 is used to adjust the transmission ratio between the servo motor 81 and the screw pump. Through the precision control of the servo motor 81, the screw pump is driven to rotate quantitatively as required, thereby guiding the glue quantitatively to the first shut-off valve 6.

[0051] An optional implementation of this embodiment is as follows: The screw pump includes:

[0052] One end of the drive shaft 91 is connected to the end of the reducer 82 away from the servo motor 81, and the other end is connected to the first universal joint. Specifically, the drive shaft 91 and the reducer 82 are fixedly connected, and the drive shaft 91 is movably connected to the first universal joint.

[0053] The connecting rod shaft 92 is connected to a first universal joint at one end and a second universal joint at the other end. Both the first and second universal joints are used to adjust the steering. Specifically, the connecting rod shaft 92 is connected to the drive shaft 91 through the first universal joint. The rotation of the drive shaft 91 drives the connecting rod shaft 92 to rotate.

[0054] The hollow screw 93 has a countersunk hole on its bottom wall and a drain hole on its side wall. The countersunk hole and the drain hole are connected.

[0055] The bearing housing 94 has one end of the hollow screw 93 connected to the connecting rod shaft 92 via a second universal joint, and the other end of the hollow screw 93 is rotatably mounted in the bearing housing 94. The rotation of the connecting rod shaft 92 drives the hollow screw 93 to rotate. The first universal joint and the second universal joint enable the hollow screw 93 to rotate under the drive of the transmission shaft 91, and avoid the jamming phenomenon caused by non-coaxial connection.

[0056] A replenishment pipe 95 is provided. A replenishment channel 96 is provided on the bottom wall of the channel block 3. The replenishment channel 96 penetrates the bottom wall of the flow channel 4 and is located below the feed pipe 5. The bearing seat 94 is sealed and installed at one end of the replenishment channel 96 located in the flow channel 4. The replenishment pipe 95 is installed at the end of the replenishment channel 96 away from the flow channel 4. The replenishment channel 96 is connected to the interior of the hollow screw 93 through a countersunk hole. The glue viscosity modifier is pumped in by an external pump, so that the glue viscosity modifier passes through the replenishment pipe 95 and enters the feed pipe 5 from the drain hole. The side wall of the end of the hollow screw 93 away from the second universal joint is sealed and installed with the bearing seat 94. The hollow screw 93 rotates in the bearing seat 94 to pump the glue in the channel to the first shut-off valve 6.

[0057] An optional implementation of this embodiment is as follows: The pusher assembly 7 includes:

[0058] The pusher barrel 71 is installed on the channel block 3 at one end and is connected to the flow channel 4. The other end of the pusher barrel 71 extends upward and the side wall of the pusher barrel 71 is provided with an opening for easy addition of glue.

[0059] The glue bucket 72 is installed inside the pusher bucket 71. The glue bucket 72 is used to supply glue into the flow channel 4. A guide hole is provided on the bottom wall of the glue bucket 72, and the glue enters the flow channel 4 through the guide hole.

[0060] The heating element 73 is a DG003 series manufactured by Hite Electric Heating Appliance Co., Ltd. The heating element 73 is installed on the side wall of the pusher barrel 71. The heating element 73 is used to heat the glue in the glue barrel 72 to reduce the viscosity of the glue in the flow channel 4, so as to prevent the glue from clogging the flow channel 4.

[0061] The fixed end of the pusher cylinder 74 is installed at the end of the pusher barrel 71 away from the channel block 3. The power output end of the pusher cylinder 74 is located inside the glue barrel 72. The pusher cylinder 74 is used to push the glue in the glue barrel 72 into the flow channel 4. The feed amount of the pusher cylinder 74 is controlled by an external air pump.

[0062] Optionally, an observation window is installed on the side wall of the pusher bucket 71 for observing the amount of glue used, so that the amount of glue used and the appearance characteristics of the glue can be observed in time to add glue or adjust the viscosity of the glue.

[0063] An optional implementation of this embodiment is as follows: the flow channel 4 includes:

[0064] The first sub-channel 41 is located inside the channel block 3 and extends through both ends of the channel block 3. The pusher hopper 71 and the feed pipe 5 are both located above the first sub-channel 41. The replenishment channel 96 is connected to the first sub-channel 41. The bearing seat 94 is installed at one end of the replenishment channel 96 near the first sub-channel 41. Specifically, the first sub-channel 41 extends through both sides of the channel and is located directly below the feed pipe 5 and the pusher hopper 71. When it is necessary to clean the flow channel 4, the cleaning work is completed by passing a cleaning tool through the first sub-channel 41.

[0065] The second sub-channel 42 has one end that penetrates the top wall of the channel block 3 and is connected to the pusher bucket 71, and the other end that is connected to the first sub-channel 41. Specifically, the guide hole on the glue bucket 72 abuts against the end of the second sub-channel 42 away from the first sub-channel 41, and the glue in the glue bucket 72 passes through the second sub-channel 42 and enters the first sub-channel 41.

[0066] The third sub-channel 43 has one end that passes through the top wall of the channel block 3 and is connected to the feeding pipe 5, and the other end that is connected to the first sub-channel 41. The hollow screw 93 passes through the third sub-channel 43 and is rotatably installed in the bearing seat 94. Specifically, the feeding pipe 5 is installed at the end of the third sub-channel 43 away from the first sub-channel 41. The glue in the first sub-channel 41 enters the feeding pipe 5 through the third sub-channel 43. The liquid replenishment channel 96 is located at one end of the flow channel 4 and is set on the side wall of the first sub-channel 41, directly opposite the third sub-channel 43. The hollow screw 93 passes through the third sub-channel 43 and is installed in the bearing seat 94.

[0067] An optional implementation of this embodiment is as follows: It also includes a push rod 10. The push rod 10 is sealed and inserted into the port of the first sub-channel 41 near the second sub-channel 42. The second shut-off valve 11 is detachably installed on the port of the first sub-channel 41 near the third sub-channel 43. When supplying glue, the push rod 10 and the second shut-off valve 11 seal both ends of the first sub-channel 41. The push rod 10 adjusts the glue supply pressure in the channel. When cleaning the equipment, the push rod 10 extends in the first sub-channel 41 to scrape off the residual glue on the inner wall of the first sub-channel 41 to achieve the purpose of cleaning the flow channel 4.

[0068] An optional implementation of this embodiment is as follows: It also includes a control box 1, which is installed on the bottom wall of the channel block 3. A microcontroller 12 is installed in the control box 1. The microcontroller 12 is an STM32 series single-chip microcomputer. The push cylinder 74, heating plate 73, push rod 10 and servo motor 81 are all electrically connected to the microcontroller 12. The feed amount of the push cylinder 74 is controlled by the operating mode set by the microcontroller 12, the temperature of the heating plate 73 is controlled, and the speed of the servo motor 81 is controlled to realize intelligent control of glue supply. The pressure of glue in the flow channel 4 is adjusted by the movement of the push rod 10.

[0069] In summary, when using the screw-type glue supply device provided in this embodiment, the push rod 10 is first positioned at one end of the first sub-channel 41 located in the second sub-channel 42, and the push rod 10 and the second shut-off valve 11 seal the first sub-channel 41. The heating element 73 adjusts the viscosity of the glue in the glue tank 72. The glue in the glue tank 72 is squeezed into the flow channel 4 by the push cylinder 74. The servo motor 81 drives the hollow screw 93, so that the hollow screw 93 cooperates with the stator in the feeding pipe 5 to guide the glue in the channel to the first shut-off valve 6. The technician summarizes the data or adds a glue viscosity modifier to the glue in the feeding pipe 5 through the hollow screw 93 to obtain a better glue viscosity. The servo motor 81 controls the screw pump to improve the stability of the dispensing. Therefore, the screw-type glue supply device provided in this embodiment uses the servo drive component 8 to drive the screw pump to supply glue, which enhances the stability of the glue output. It has a reasonable structure and strong practicality. In addition, while driving the glue pump to the first shut-off valve 6, the screw pump introduces the glue viscosity modifier into the glue to adjust the glue viscosity. It has a novel structure and strong practicality.

[0070] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A screw-type glue supply device, characterized in that, include: A channel block, wherein the channel block is provided with a flow channel for the glue to pass through; A feeding pipe is installed at one end on the channel block and extends upward at the other end. The feeding pipe is connected to the flow channel. A first shut-off valve for discharging glue is installed at the upper part of the feeding pipe. A pusher assembly is installed on the channel block and is connected to the flow channel. The pusher assembly is used to push the glue towards the feed tube through the flow channel. A servo drive assembly is installed at the end of the feed tube away from the channel block, and the power output end of the servo drive assembly is located inside the feed tube; A screw pump is located inside the feed pipe. One end of the screw pump is connected to the power output end of the servo drive assembly, and the other end of the screw pump is rotatably mounted on the side wall of the flow channel. The screw pump is provided with a drain hole for pumping in the glue viscosity modifier. The screw pump is used to adjust the glue viscosity and pump the glue in the flow channel to the first shut-off valve. The servo drive component includes: A servo motor, wherein the fixed end of the servo motor is installed at the end of the feeding tube away from the channel block, and the power output end of the servo motor is located inside the feeding tube; A speed reducer is installed inside the feed pipe. One end of the speed reducer is connected to the power output end of the servo motor, and the other end of the speed reducer is connected to the screw pump. The speed reducer is used to adjust the transmission ratio between the servo motor and the screw pump. The screw pump includes: One end of the drive shaft is connected to the end of the reducer away from the servo motor, and the other end is connected to a first universal joint. The connecting rod shaft is connected to the first universal joint at one end and to the second universal joint at the other end. Both the first universal joint and the second universal joint are used to adjust the steering. A hollow screw, wherein the side wall of the hollow screw is provided with a plurality of drainage holes; The bearing housing has one end of the hollow screw connected to the connecting rod shaft via the second universal joint, and the other end of the hollow screw rotatably mounted in the bearing housing. A replenishment pipe is provided, wherein a replenishment channel is provided on the bottom wall of the channel block, the replenishment channel penetrates the bottom wall of the flow channel and is located below the feed pipe, the bearing seat is sealed and installed at one end of the replenishment channel located inside the flow channel, the replenishment pipe is installed at the end of the replenishment channel away from the flow channel, and the replenishment channel is in communication with the interior of the hollow screw. The feeding assembly includes: A pusher barrel is installed on the channel block at one end, the pusher barrel is connected to the flow channel, and the other end of the pusher barrel extends upward; A glue bucket is installed inside the pusher bucket, and the glue bucket is used to supply glue into the flow channel; A heating element is installed on the side wall of the pusher bucket, and the heating element is used to heat the glue in the glue bucket; A pusher cylinder, the fixed end of which is installed on the end of the pusher barrel away from the channel block, and the power output end of which is located inside the glue barrel, is used to push the glue in the glue barrel into the flow channel; The flow channel includes: The first sub-channel is located inside the channel block and extends through both end faces of the channel block. The pusher bucket and the feed pipe are both located above the first sub-channel. The replenishment channel is connected to the first sub-channel. The bearing seat is installed at one end of the replenishment channel near the first sub-channel. The second sub-channel has one end penetrating through the top wall of the channel block and communicating with the pusher bucket, and the other end communicating with the first sub-channel; The third sub-channel has one end penetrating through the top wall of the channel block and connected to the feeding pipe, and the other end connected to the first sub-channel. The hollow screw passes through the third sub-channel and is rotatably installed in the bearing seat. A push rod is sealed and inserted into the port of the first sub-channel near the end of the second sub-channel, and a second shut-off valve is detachably installed on the port of the first sub-channel near the end of the third sub-channel.

2. The screw-type glue supply device according to claim 1, characterized in that, The side wall of the pusher bucket is equipped with an observation window for observing the amount of glue used.

3. The screw-type glue supply device according to claim 2, characterized in that, It also includes a control box, which is installed on the bottom wall of the channel block. The control box contains a microcontroller, and the pushing cylinder, the heating element, the push rod, and the servo motor are all electrically connected to the microcontroller.

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