A paste packaging machine with self-cleaning function

Abstract

The present invention discloses a paste packaging machine with a self-cleaning function, which belongs to the technical field of packaging equipment. It includes a paste feeding device, a film placing device, a packaging film former, a film pulling device, a vertical sealing device and a horizontal sealing and cutting device. The paste feeding device includes a paste placing barrel, which is located in a water bathtub. A discharge pipe is provided at the bottom of the paste placing barrel, which extends downward to the outside of the water bathtub and is connected to the first port of a tee, the second port of the tee is connected to a sewage pipe, the third port of the tee is connected to one end of a delivery pipeline, the other end of the delivery pipeline is connected to one end of a cleaning water delivery pipeline and one end of a paste delivery pipeline through a three-way valve A, the other end of the cleaning water delivery pipeline is connected to a cleaning spray head, and the other end of the paste delivery pipeline is connected to a quantitative injection head; a three-way valve B and a magnetic pump are connected in series on the delivery pipeline, the three-way valve B is connected to one end of a water supply pipe, and the other end of the water supply pipe is connected to the bottom of the water bathtub. The present application makes full use of the hot water in the bathtub to realize the circulation cleaning of the paste placement barrel, which is extremely convenient to operate. The use of hot water greatly improves the cleaning effect, and combined with the circulation cleaning, it also saves water resources.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, in particular to a paste packaging machine. Background Art

[0002] In the actual operation, the paste storage tank of the existing paste packaging machine is easy to stick to the inner wall of the paste storage tank, and the cleaning operation is very troublesome, time-consuming and labor-intensive.

[0003] In order to solve the above problems, in the prior art, the patent document with publication number CN206345035U discloses an automatic paste packaging machine, which includes a filling mechanism, a conveying device, a capping device and a frame, wherein the filling mechanism, the conveying device and the capping device are all arranged on the frame, the filling mechanism includes a hopper, a rotor pump and a diaphragm pump, and the lower end of the hopper is provided with a discharge port 1 and a discharge port 2, the discharge port 1 is connected to the rotor pump in a detachable manner by a snap buckle, and the discharge port 2 is connected to the diaphragm pump in a detachable manner by a snap buckle, and the connections are all detachable snap buckle connections; the rotor pump and the diaphragm pump are used as the loading pump. First, the rotor pump takes less time to load a package of product than the piston pump and the rotor pump has relatively small heat exhaustion, so it can be filled for a long time without interruption, and the rotor pump is also suitable for high-temperature filling above 80°C, which reduces the initial cooling time of the material and improves efficiency. For all-water liquid products, the installation of a diaphragm pump ensures that the equipment can be fully automatically packaged, improves production capacity and output, and ensures the safety and quality of the packaging process. Furthermore, to ensure production efficiency, we use quick-connect and snap-on connections between the filling equipment and the entire machine, reducing the time consumed by machine cleaning.

[0004] The above technical solution adopts a quick-connect method to solve the problem of time consumed in machine cleaning. In fact, the quick-disconnect method does not fundamentally solve the problem of troublesome cleaning operations. Summary of the Invention

[0005] The object of the present invention is to provide a paste packaging machine with a self-cleaning function, which saves time and effort in cleaning and is easy to operate.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A paste packaging machine with a self-cleaning function includes a paste feeding device, a film placing device, a packaging film former, a film pulling device, a vertical sealing device and a horizontal sealing and cutting device. The film placing device is used to guide the packaging film on the film disc onto the packaging film former, the film pulling device is used to pull the packaging film to move along the packaging film former, the packaging film former is used to enclose the packaging film into a cavity structure, the vertical sealing device is used to heat-press the side edges of the packaging film together to form a closed cylinder, and the horizontal sealing and cutting device is used to heat-press two horizontal sealing hot pressing lines on the packaging film and cut the two horizontal sealing hot pressing lines. The packaging film is cut off in the area between the pressure lines. The paste loading device includes a paste placing barrel, which is located in a water bathtub. A discharge pipe is provided at the bottom of the paste placing barrel. The discharge pipe extends downward out of the water bathtub and is connected to the first port of the tee. The second port of the tee is connected to a drain pipe. A drain valve is provided on the drain pipe. The third port of the tee is connected to one end of the delivery pipeline. The other end of the delivery pipeline is connected to one end of the cleaning water delivery pipeline and one end of the paste delivery pipeline at the same time through a three-way valve A. The other end of the cleaning water delivery pipeline is connected to the first port of the tee. One end is connected to a cleaning spray head, which is arranged on the top of the paste placement barrel and is used to spray water into the paste placement barrel. The other end of the paste delivery pipeline is connected to a quantitative injection head, which is used to inject a predetermined amount of paste into the bag formed after vertical and horizontal sealing. A three-way valve B and a magnetic pump are connected in series on the delivery pipeline. The three-way valve B is connected to one end of the water supply pipe, and the other end of the water supply pipe is connected to the bottom of the water bathtub. When injecting, the drain valve is closed, the three-way valve B is closed, and the three-way valve A is opened. Under the action of the magnetic pump, the paste in the paste placement barrel is filled with water in sequence. It flows to the quantitative injection head through the tee, delivery pipeline, three-way valve A and paste delivery pipeline; during cleaning, the drain valve is closed, the three-way valve B is opened, and the three-way valve A is closed. Under the action of the magnetic pump, the hot water in the bathtub flows into the delivery pipeline through the water supply pipe, flows to the cleaning spray head through the cleaning water delivery pipeline, and then is sprayed into the paste placement barrel through the cleaning spray head. When the hot water in the paste placement barrel reaches a predetermined amount, the three-way valve B is closed, and the hot water circulates in the water circulation system composed of the paste placement barrel, the tee, delivery pipeline, three-way valve A, cleaning water delivery pipeline and cleaning spray head.

[0008] Furthermore, the drain valve is a pneumatic two-way valve; the three-way valve A and the three-way valve B are pneumatic three-way valves.

[0009] Furthermore, the water inlet and outlet of the bathtub are connected to a water temperature controller through a hot water circulation pipeline. The water temperature controller drives hot water through a water pump to flow in a circulating water flow system composed of the bathtub, the hot water circulation pipeline and the water temperature controller, and controls the circulating hot water at a constant temperature.

[0010] Furthermore, a top cover is provided on the top of the paste placement barrel, and a feed pipe and the cleaning spray head are provided on the top cover.

[0011] Furthermore, a stirring motor is provided on the top cover, and the stirring motor is connected to a stirrer in the paste placement barrel through a coupling.

[0012] Furthermore, the film placing device adopts a two-film disc structure to introduce the packaging films on the two film discs into the packaging film former, so that the packaging film former is located between the two packaging films.

[0013] Furthermore, the vertical sealing device is used to heat-press two side edges of the two formed packaging films together.

[0014] Furthermore, it also includes a coding machine, which is used to code the surface of the packaging film.

[0015] Furthermore, the quantitative injection head includes a quantitative injection tube, a valve core and a cylinder, one end of the quantitative injection tube is fixed on the cylinder, the piston rod of the cylinder is connected to the valve core in the quantitative injection tube, and the other end of the quantitative injection tube is the discharge end. A feed port is provided on the tube wall of the quantitative injection tube, and a pipe joint is provided at the feed port, and the pipe joint is connected to the other end of the paste conveying pipeline; when feeding, the cylinder drives the valve core to move to the left, and the feed port is opened. Under the drive of the magnetic pump, the paste in the paste conveying pipeline enters the quantitative injection tube through the pipe joint. When injecting, the cylinder drives the valve core to move to the right, the valve core closes the feed port, and pushes the paste in the quantitative injection tube out of the discharge end of the quantitative injection tube.

[0016] Furthermore, the quantitative injection head includes a quantitative injection tube, a plunger, a spring and an air compressor, one end of the quantitative injection tube is a high-pressure gas input end, the high-pressure gas input end is connected to the air compressor through a high-pressure gas pipeline, a three-way valve C is connected in series on the high-pressure gas pipeline, and a pressure relief port is provided on the three-way valve C, a slide groove is provided in the slide groove, a sealing ring is provided between the slider and the inner wall of the slide groove, the plunger is provided in the quantitative injection tube and connected to the slider, the spring is sleeved on the plunger, one end of the spring presses on the side wall of the slider, and the other end of the spring presses on the end face of the slide groove, the other end of the quantitative injection tube is a discharge end, and a feed port is provided on the tube wall of the quantitative injection tube, and an injection port is provided at the feed port The material pipe and the injection pipe are located on one side of the quantitative injection pipe, and the injection pipe is connected to the other end of the paste conveying pipeline; when feeding, the three-way valve C is opened, the high-pressure air pipeline is connected and the pressure relief port on the three-way valve C is closed, and the air compressor drives the slider to move to the left along the slide groove, the spring is compressed, and the slider drives the plunger to move to open the feed port. Driven by the magnetic pump, the paste in the paste conveying pipeline enters the quantitative injection pipe through the injection pipe; when injecting, the three-way valve C is closed, the high-pressure air pipeline is closed and the pressure relief port on the three-way valve C is opened, the vacuum in the slide groove is eliminated, the spring pushes the slider to move to the right along the slide groove, the slider drives the plunger to move, the plunger closes the feed port, and pushes the paste in the quantitative injection pipe out of the discharge end of the quantitative injection pipe.

[0017] The beneficial effects of the present invention are:

[0018] The paste packaging machine of the present application makes full use of the hot water in the bathtub to realize the circulation cleaning of the paste placement barrel. The operation is extremely convenient. The use of hot water greatly improves the cleaning effect, and combined with the circulation cleaning, it also saves water resources; especially in the process of circulation cleaning, when combined with the agitator, the cleaning effect will be better.

[0019] The present application also improves the quantitative injection head, which has a more compact structure, high quantitative accuracy and is convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not limit the present invention in any way. A person skilled in the art can derive other drawings based on the following drawings without inventive effort.

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 The structural diagram of the paste feeding device shown;

[0023] Figure 3 for Figure 2The schematic diagram of the first structural form of the quantitative injection head shown;

[0024] Figure 4 for Figure 2 The schematic diagram of the second structural form of the quantitative injection head shown.

[0025] Figure 1: Paste feeding device; 2: Film placing device; 3: Packaging film former; 4: Film pulling device; 5: Vertical sealing device; 6: Horizontal sealing and cutting device; 7: Coding machine; 8: Water bathtub; 9: Discharge pipe; 10: Tee; 11: Drain pipe; 12: Drain valve; 13: Delivery pipeline; 14: Three-way valve A; 15: Cleaning water delivery pipeline; 16: Paste delivery pipeline; 17: Cleaning spray head; 18: Dosing head; 19: Three-way valve B; 20: Magnetic pump; 21: Water supply pipe; 22: Water outlet; 23: Hot water circulation pipeline; 24: Water temperature control machine; 25. Water pump; 26. Top cover; 27. Feed pipe; 28. Stirring motor; 29. ​​Coupling; 30. Agitator; 31. Dosing tube; 32. Valve core; 33. Cylinder; 34. Feed port; 35. Pipe joint; 36. Dosing tube; 37. Plunger; 38. Spring; 39. Air compressor; 40. High-pressure gas input port; 41. High-pressure gas pipeline; 42. Paste placement barrel; 43. Chute; 44. Slider; 45. Sealing ring; 46. Feed port; 47. Feed pipe; 48. Three-way valve C; 49. Pressure relief port; 50. Water inlet. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other unless there is a conflict.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "forward", "reverse", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] like Figure 1As shown, a paste packaging machine with a self-cleaning function includes a paste feeding device 1, a film placing device 2, a packaging film former 3, a film pulling device 4, a vertical sealing device 5, a horizontal sealing and cutting device 6 and a coding machine 7. The film placing device 2 is used to introduce the packaging film on the film disc into the packaging film former 3 through the coding machine 7, the coding machine 7 is used to code the surface of the packaging film, the film pulling device 4 is used to pull the packaging film to move along the packaging film former 3, the packaging film former 3 is used to enclose the packaging film into a cavity structure, the vertical sealing device 5 is used to hot-press the side edges of the packaging film together to form a closed cylinder, and the horizontal sealing and cutting device 6 is used to hot-press two horizontal sealing hot pressing lines on the packaging film and cut the packaging film in the area between the two horizontal sealing hot pressing lines.

[0029] The film placing device 2 adopts a two-film disc structure to introduce the packaging films on the two film discs into the packaging film former, so that the packaging film former 3 is located between the two packaging films; the vertical sealing device 5 is used to hot-press the two side edges of the two formed packaging films together.

[0030] like Figure 2As shown, the paste feeding device 1 includes a paste placing barrel 42, the paste placing barrel 42 is located in the water bathtub 8, and a discharge pipe 9 is provided at the bottom of the paste placing barrel 42. The discharge pipe 9 extends downward to the outside of the water bathtub 8 and is connected to the first port of the tee 10. The second port of the tee is connected to the drain pipe 11. The drain pipe 11 is provided with a drain valve 12. The third port of the tee 10 is connected to one end of the delivery pipeline 13. The other end of the delivery pipeline 13 is connected to the three-way valve A14 at the same time. One end of the cleaning water delivery pipeline 15 is connected to one end of the paste delivery pipeline 16, and the other end of the cleaning water delivery pipeline 15 is connected to the cleaning spray head 17. The cleaning spray head 17 is provided on the top of the paste placement barrel 42 and is used to spray water into the paste placement barrel 42. The other end of the paste delivery pipeline 16 is connected to the quantitative injection head 18, and the quantitative injection head 18 is used to inject a predetermined amount of paste into the bag formed after vertical and horizontal sealing; the delivery pipeline 13 is connected in series with a three-way valve B19 and The magnetic pump 20 and the three-way valve B19 are connected to one end of the water supply pipe 21, and the other end of the water supply pipe 21 is connected to the bottom of the bathtub 8; when filling, the drain valve 12 is closed, the three-way valve B19 is closed, and the three-way valve A14 is opened. Under the action of the magnetic pump 20, the paste in the paste placement barrel 42 flows to the quantitative injection head 18 in sequence through the three-way valve 10, the delivery pipeline 13, the three-way valve A14 and the paste delivery pipeline 16; when cleaning, the drain valve 12 is closed, the three-way valve B19 is opened, and the three-way valve A14 is closed. When the hot water in the paste storage barrel 42 reaches a predetermined level, the three-way valve B19 is closed. The hot water then circulates through the water circulation system formed by the paste storage barrel 42, the three-way valve 10, the delivery pipe 13, the three-way valve A14, the cleaning water delivery pipe 15, and the cleaning spray head 17.

[0031] The drain valve 12 is a pneumatic two-way valve; the three-way valve A14 and the three-way valve B19 are pneumatic three-way valves.

[0032] The water inlet 50 and the water outlet 22 of the bathtub 8 are connected to the water temperature controller 24 through the hot water circulation pipeline 23. The water temperature controller 24 drives the hot water through the circulating water system composed of the bathtub 8, the hot water circulation pipeline 23 and the water temperature controller 24 through the water pump 25, and controls the circulating hot water at a constant temperature.

[0033] The top of the paste placing barrel 42 is provided with a top cover 26, and the top cover 26 is provided with a feed pipe 27 and the cleaning spray head 17. A stirring motor 28 is provided on the top cover 26, and the stirring motor 28 is connected to the agitator 30 in the paste placing barrel 42 through a coupling 29.

[0034] The quantitative injection head 18 has two structural forms.

[0035] The first structural form, such as Figure 3 As shown, the quantitative injection head 18 includes a quantitative injection tube 31, a valve core 32 and a cylinder 33. One end of the quantitative injection tube 31 is fixed on the cylinder 33, and the piston rod of the cylinder 33 is connected to the valve core 32 in the quantitative injection tube 31. The other end of the quantitative injection tube 31 is the discharge end. A feed port 34 is provided on the tube wall of the quantitative injection tube 32, and a pipe joint 35 is provided at the feed port 34. The pipe joint 35 is connected to the other end of the paste conveying pipeline 16.

[0036] During feeding, the cylinder 33 drives the valve core 32 to move leftward, the feed port 34 opens, and the paste in the paste delivery pipeline 16 enters the material injection quantitative pipe 31 through the pipe joint 35 under the drive of the magnetic pump 20.

[0037] During injection, the cylinder 33 drives the valve core 32 to move rightward, the valve core 32 closes the feed port 34 , and pushes the paste in the injection metering tube 31 out of the discharge end of the injection metering tube 31 .

[0038] The second structural form, such as Figure 4 As shown, the quantitative injection head 18 includes a quantitative injection pipe 36, a plunger 37, a spring 38 and an air compressor 39. One end of the quantitative injection pipe 36 is a high-pressure gas input end 40, which is connected to the air compressor 39 through a high-pressure gas pipeline 41. A three-way valve C48 is connected in series to the high-pressure gas pipeline 41. The three-way valve C48 is provided with a pressure relief port 49. A chute 43 is provided in the quantitative injection pipe 36, and a slider 44 is provided in the chute 43. A sealing ring 4 is provided between the slider 44 and the inner wall of the chute 43. 5. The plunger 37 is disposed in the quantitative injection tube 36 and connected to the slider 44. The spring 38 is sleeved on the plunger 37. One end of the spring 38 presses against the side wall of the slider 44, and the other end of the spring 38 presses against the end surface of the chute 43. The other end of the quantitative injection tube 36 is the discharge end. An inlet 46 is provided on the wall of the quantitative injection tube 36. An injection tube 47 is provided at the inlet 46. The injection tube 47 is located on one side of the quantitative injection tube 36 and is connected to the other end of the paste delivery pipeline 16.

[0039] During feeding, the three-way valve C48 is opened, the high-pressure air pipeline 41 is connected, and the pressure relief port 49 on the three-way valve C is closed. The air compressor 39 drives the slider 44 to move leftward along the slide 43, the spring 38 is compressed, and the slider 44 drives the plunger 37 to move, opening the feed port 46. Driven by the magnetic pump 20, the paste in the paste delivery pipeline 16 enters the quantitative injection pipe 36 through the injection pipe 47;

[0040] During injection, the three-way valve C48 is closed, the high-pressure gas pipeline 41 is closed, and the pressure relief port 49 on the three-way valve C48 is opened. The vacuum in the chute 43 is eliminated, and the spring 38 pushes the slider 44 to move to the right along the chute 43. The slider 44 drives the plunger 37 to move. The plunger 37 closes the feed port 46 and pushes the paste in the quantitative injection tube 47 out of the discharge end of the quantitative injection tube 47.

[0041] Working principle: The paste packaging machine with self-cleaning function of this application makes full use of the hot water in the bathtub to realize the circulation cleaning of the paste placement barrel. It is extremely convenient to operate. The use of hot water greatly improves the cleaning effect, and combined with the circulation cleaning, it also saves water resources; especially in the process of circulation cleaning, it cooperates with the agitator, and the cleaning effect will be better.

[0042] In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent. Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A paste packaging machine with a self-cleaning function, characterized by: The package body is provided with a paste feeding device, a film placing device, a packaging film former, a film pulling device, a vertical sealing device and a horizontal sealing and cutting device. The film placing device is used to guide the packaging film on the film disc onto the packaging film former, the film pulling device is used to pull the packaging film to move along the packaging film former, the packaging film former is used to enclose the packaging film into a cavity structure, the vertical sealing device is used to heat-press the side edges of the packaging film together to form a closed cylinder, the horizontal sealing and cutting device is used to heat-press two horizontal sealing hot-pressing lines on the packaging film and cut the packaging film in the area between the two horizontal sealing hot-pressing lines. The paste feeding device includes a paste placing barrel, and the paste placing barrel is located in the water bathtub. In the embodiment, a discharge pipe is provided at the bottom of the paste placement barrel, the discharge pipe extends downward to the outside of the water bathtub and is connected to the first port of the tee, the second port of the tee is connected to the sewage pipe, the sewage pipe is provided with a sewage valve, the third port of the tee is connected to one end of the delivery pipeline, the other end of the delivery pipeline is connected to one end of the cleaning water delivery pipeline and one end of the paste delivery pipeline at the same time through the three-way valve A, the other end of the cleaning water delivery pipeline is connected to the cleaning spray head, the cleaning spray head is provided on the top of the paste placement barrel for spraying water into the paste placement barrel, the other end of the paste delivery pipeline is connected to the quantitative injection head, the quantitative injection head is used to inject a predetermined A certain amount of paste is injected into the bag body formed after vertical sealing and horizontal sealing; a three-way valve B and a magnetic pump are connected in series on the delivery pipeline, the three-way valve B is connected to one end of the water supply pipe, and the other end of the water supply pipe is connected to the bottom of the bathtub; when injecting, the drain valve is closed, the three-way valve B is closed, and the three-way valve A is opened. Under the action of the magnetic pump, the paste in the paste bucket flows to the quantitative injection head through the three-way, the delivery pipeline, the three-way valve A and the paste delivery pipeline in turn; when cleaning, the drain valve is closed, the three-way valve B is opened, and the three-way valve A is closed. Under the action of the magnetic pump, the hot water in the bathtub flows into the delivery pipeline through the water supply pipe, flows to the cleaning spray head through the cleaning water delivery pipeline, and then flows to the cleaning spray head. The hot water is sprayed into the paste storage barrel through the cleaning spray head. When the hot water in the paste storage barrel reaches a predetermined amount, the three-way valve B is closed, and the hot water circulates in the water circulation system composed of the paste storage barrel, the three-way valve, the delivery pipeline, the three-way valve A, the cleaning water delivery pipeline, and the cleaning spray head; the water inlet and outlet of the bathtub are connected to the water temperature control machine through the hot water circulation pipeline, and the water temperature control machine drives the hot water to flow in the circulating water flow system composed of the bathtub, the hot water circulation pipeline and the water temperature control machine through a water pump, and controls the circulating hot water at a constant temperature; the top of the paste storage barrel is provided with a top cover, and the top cover is provided with a feed pipe and the cleaning spray head;The quantitative injection head includes a quantitative injection tube, a plunger, a spring and an air compressor. One end of the quantitative injection tube is a high-pressure gas input end, which is connected to the air compressor through a high-pressure gas pipeline. A three-way valve C is connected in series on the high-pressure gas pipeline, and a pressure relief port is provided on the three-way valve C. A chute is provided in the quantitative injection tube, a slider is provided in the chute, and a sealing ring is provided between the slider and the inner wall of the chute. The plunger is provided in the quantitative injection tube and connected to the slider. The spring is sleeved on the plunger, one end of the spring presses on the side wall of the slider, and the other end of the spring presses on the end face of the chute. The other end of the quantitative injection tube is a discharge end. A feeding port is provided on the tube wall of the quantitative injection tube, and a injection tube is provided at the feeding port. The injection pipe is located on one side of the quantitative injection pipe, which is connected to the other end of the paste delivery pipeline. During feeding, the three-way valve C is opened, the high-pressure air pipeline is connected, and the pressure relief port on the three-way valve C is closed. The air compressor drives the slider to move left along the chute, the spring is compressed, and the slider drives the plunger to move, opening the feed port. Driven by the magnetic pump, the paste in the paste delivery pipeline enters the quantitative injection pipe through the injection pipe. During injection, the three-way valve C is closed, the high-pressure air pipeline is closed, and the pressure relief port on the three-way valve C is opened. The vacuum in the chute is eliminated, and the spring pushes the slider to move right along the chute, which drives the plunger to move. The plunger closes the feed port and pushes the paste in the quantitative injection pipe out of the discharge end of the quantitative injection pipe.

2. The paste packaging machine with self-cleaning function according to claim 1, characterized in that: The sewage valve is a pneumatic two-way valve; the three-way valve A and the three-way valve B are pneumatic three-way valves.

3. The paste packaging machine with self-cleaning function according to claim 1, characterized in that: The top cover is provided with a stirring motor, and the stirring motor is connected to the stirrer in the paste placement barrel through a coupling.

4. The paste packaging machine with self-cleaning function according to claim 1, characterized in that: The film placing device adopts a two-film disc structure, which is used to introduce the packaging films on the two film discs into the packaging film former, so that the packaging film former is located between the two packaging films.

5. The paste packaging machine with self-cleaning function according to claim 1, characterized in that: The vertical sealing device is used to heat-press the two side edges of the two formed packaging films together.

6. The paste packaging machine with self-cleaning function according to claim 1, characterized in that: The packaging film further comprises a coding machine, which is used for coding the surface of the packaging film.

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