A foaming device for producing PVC building panels

Abstract

This utility model relates to the technical field of PVC sheet production, and in particular to a foaming device for producing architectural PVC sheets. It features an internal sliding pressurization mechanism to pressurize the internal foaming liquid, facilitating discharge, improving production efficiency, and enhancing practicality. The device includes a foaming tank, a stirring drive motor, a reducer, a stirring rod, stirring blades, a top frame, a lifting drive motor, a threaded rod, a lifting screw, a piston, an external threaded inlet, an internal threaded cap, an on / off valve, and a discharge head. The bottom center of the foaming tank is connected to the top of the reducer. The input end of the reducer is connected to the output end of the stirring drive motor, and the output end of the reducer is connected to the bottom of the stirring rod. The outer side of the stirring rod is connected to the inner side of multiple sets of stirring blades. The inner side of the foaming tank is vertically slidably connected to the outer side of the piston. The outer wall of the external threaded inlet is detachably screwed to the inner wall of the internal threaded cap. An on / off valve is connected to the rear center of the bottom of the foaming tank, and the bottom of the on / off valve is connected to the top of the discharge head.

Description

Technical Field

[0001] This utility model relates to the technical field of PVC sheet production, specifically a foaming device for producing architectural PVC sheets. Background Technology

[0002] PVC sheets are used for surface packaging of various panels, hence they are also known as decorative film or adhesive film, and are applied in many industries such as building materials, packaging, and pharmaceuticals. The building materials industry accounts for the largest share at 60%, followed by the packaging industry, and several other smaller-scale applications. Based on hardness, they can be divided into soft PVC and rigid PVC; based on manufacturing process, they can be divided into PVC skinned foamed boards and PVC free-foamed boards; based on transparency, they can be divided into transparent PVC sheets and PVC boards.

[0003] In the production of PVC sheets, a corresponding device is needed for auxiliary foaming. A Chinese patent discloses a foaming device for processing wood-plastic composite sheets (authorization announcement number CN208946520U). This patented technology can drive the main stirring blade and auxiliary stirring blade to rotate through the second rotating shaft via the first rotating motor, thereby continuously agitating the foaming agent. This helps to increase the contact area between the foaming agent and the gas, further improve the uniformity of the gas-foaming agent mixture, and enhance the foaming effect.

[0004] Because the device relies mainly on external sources for material input and output, it is inefficient and impractical. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a foaming device for the production of PVC building panels, which is equipped with an internal sliding pressurization mechanism to pressurize the internal foaming liquid, facilitate its discharge, improve production efficiency, and enhance practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a foaming device for producing PVC building panels, comprising a foaming tank, a stirring drive motor, a reducer, a stirring rod, stirring blades, a top frame, a lifting drive motor, a threaded rod, a lifting screw, a piston, an external threaded inlet, an internal threaded cap, an on / off valve, and a discharge head. The bottom middle of the foaming tank is connected to the top of the reducer, the input end of the reducer is connected to the output end of the stirring drive motor, the output end of the reducer is connected to the bottom end of the stirring rod, and the outer side of the stirring rod is connected to the inner side of multiple sets of stirring blades. Foaming... The inner side of the barrel is vertically slidably connected to the outer side of the piston. The middle part of the top of the piston is connected to the bottom of the lifting screw tube. The upper side of the outer end of the foaming barrel is connected to the lower left and right sides of the inner side of the top frame. The middle part of the top of the top frame is connected to the bottom of the lifting drive motor. The output end of the lifting drive motor is connected to the top of the threaded rod. The outer wall of the threaded rod is screwed to the inner wall of the lifting screw tube. The front side of the top of the piston is connected to the bottom of the external threaded inlet. The outer wall of the external threaded inlet is detachably screwed to the inner wall of the internal threaded cover. An opening and closing valve is connected to the middle and rear side of the bottom of the foaming barrel. The bottom of the opening and closing valve is connected to the top of the discharge head.

[0007] Preferably, it also includes a one-way valve and an air inlet head, wherein the rear side of the piston top is connected to the bottom end of the one-way valve, and the air inlet head is connected to the top of the one-way valve.

[0008] Preferably, it also includes a screw-on handle, wherein one side of the outer end of the internal threaded cap is connected to the inner side of the screw-on handle.

[0009] Preferably, it also includes an oil injection nozzle, wherein the upper side of the front end of the lifting screw tube is connected to the inner side of the oil injection nozzle.

[0010] Preferably, it also includes an oil filling cap, wherein the outer side of the oil filling nozzle and the inner side of the oil filling cap are detachably installed.

[0011] Preferably, it also includes support legs and a bottom fixing seat, wherein the three corners of the bottom end of the foaming bucket are respectively connected to the top of a set of support legs, and the bottom end of each set of support legs is respectively connected to the middle of the top of a set of bottom fixing seats.

[0012] Compared with the prior art, this utility model provides a foaming device for the production of PVC building panels, which has the following beneficial effects: When the internal threaded cap is open, the raw material liquid can be injected into the foaming tank through the external threaded inlet. Then, the internal threaded cap is screwed closed on the outside of the external threaded inlet. The stirring drive motor runs, and the reducer slows down, causing the stirring rod to drive the stirring blades to rotate, stirring the internal raw materials to ensure thorough mixing and foaming. After completion, the lifting drive motor runs. Under the connection of the top frame, when the threaded rod rotates forward, it engages with the lifting screw tube, and the piston slides down, pressurizing the inside of the foaming tank. After the opening and closing valve is opened, the finished foaming liquid can be discharged through the discharge head. When the threaded rod reverses, the piston can be reset and the cycle continues. An internal sliding pressurization mechanism is set up to pressurize the internal foaming liquid, facilitating its discharge, improving production efficiency, and enhancing practicality. Attached Figure Description

[0013] Figure 1 This is an axial view of the structural schematic diagram of this utility model; Figure 2 This utility model Figure 1 Front view; Figure 3 This utility model Figure 1 The left view; Figure 4 This utility model Figure 1 The top view.

[0014] The following components are labeled in the attached diagram: 1. Foaming tank; 2. Stirring drive motor; 3. Reducer; 4. Stirring rod; 5. Stirring blade; 6. Top frame; 7. Lifting drive motor; 8. Threaded rod; 9. Lifting screw tube; 10. Piston; 11. External threaded inlet; 12. Internal threaded cap; 13. On / off valve; 14. Discharge head; 15. Check valve; 16. Air inlet head; 17. Tightening handle; 18. Oil nozzle; 19. Oil cap; 20. Support leg; 21. Bottom fixing base. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0016] Please see Figure 1-4A foaming device for producing PVC building panels includes a foaming tank 1, a stirring drive motor 2, a reducer 3, a stirring rod 4, stirring blades 5, a top frame 6, a lifting drive motor 7, a threaded rod 8, a lifting screw tube 9, a piston 10, an external threaded inlet 11, an internal threaded cap 12, an on / off valve 13, and a discharge head 14. The bottom middle of the foaming tank 1 is connected to the top of the reducer 3. The input end of the reducer 3 is connected to the output end of the stirring drive motor 2. The output end of the reducer 3 is connected to the bottom of the stirring rod 4. The outer side of the stirring rod 4 is connected to the inner side of multiple sets of stirring blades 5. The inner side of the foaming tank 1 is vertically slidably connected to the outer side of the piston 10. The top middle of the piston 10 is connected to the bottom of the lifting screw tube 9. The upper outer side of the foaming tank 1 is connected to the lower left and right sides of the inner side of the top frame 6. The top middle of the top of the top frame 6 is connected to the bottom of the lifting drive motor 7. The output end of the lifting drive motor 7 is connected to the top of the threaded rod 8. The outer wall of the threaded rod 8 is screwed to the inner wall of the lifting screw tube 9. The piston 10 has its front top end connected to the bottom end of the feed external thread port 11. The outer wall of the feed external thread port 11 is detachably screwed to the inner wall of the internal thread cover 12. An on / off valve 13 is connected to the rear bottom end of the foaming tank 1, and the bottom end of the on / off valve 13 is connected to the top end of the discharge head 14. When the internal thread cover 12 is open, the raw material liquid can be injected into the foaming tank 1 through the feed external thread port 11. Then, the internal thread cover 12 is screwed closed on the outside of the feed external thread port 11. The mixture is then stirred and driven by an electric motor. When machine 2 is running, reducer 3 slows down, causing stirring rod 4 to drive stirring blade 5 to rotate, stirring the internal raw materials to fully mix and foam them. After completion, lifting drive motor 7 runs. Under the connection of top frame 6, when threaded rod 8 rotates forward, it is screwed into lifting screw tube 9, and piston 10 slides down, pressurizing the inside of foaming tank 1. After opening the opening and closing valve 13, the finished foaming liquid can be discharged through discharge head 14. When threaded rod 8 reverses, piston 10 can be reset and continue to circulate.

[0017] It also includes a one-way valve 15 and an air inlet head 16. The rear side of the top of the piston 10 is connected to the bottom of the one-way valve 15, and the top of the one-way valve 15 is connected to the air inlet head 16. When the piston 10 is pressed down, the one-way valve 15 can remain closed. When the piston 10 slides up, the one-way valve 15 can automatically open, and the air inlet head 16 can supplement the air pressure, thereby improving reliability.

[0018] It also includes a screw-on handle 17, with one side of the outer end of the inner threaded cover 12 connected to the inner side of the screw-on handle 17; by pinching the screw-on handle 17, the inner threaded cover 12 can be rotated, making it convenient for the inner threaded cover 12 to be screwed on and closed outside the feed external thread 11, thus improving convenience.

[0019] It also includes an oil nozzle 18, with the upper front end of the lifting screw tube 9 connected to the inner side of the oil nozzle 18; oil can be injected into the inner wall of the lifting screw tube 9 through the oil nozzle 18 for convenient lubrication and maintenance.

[0020] It also includes an oil filling cap 19, and the outer side of the oil filling nozzle 18 and the inner side of the oil filling cap 19 can be detachably installed; after the oil filling cap 19 is installed on the outer side of the oil filling nozzle 18, the inside of the oil filling nozzle 18 can be sealed and protected to prevent dust from entering and contaminating it, thereby improving reliability.

[0021] It also includes support legs 20 and bottom fixing bases 21. The three corners of the bottom of the foaming barrel 1 are respectively connected to the top of a set of support legs 20, and the bottom of each set of support legs 20 is respectively connected to the middle of the top of a set of bottom fixing bases 21. It can be connected and fixed to the ground through the three sets of bottom fixing bases 21, and the foaming barrel 1 is supported by the support legs 20 to improve stability.

[0022] In summary, when using a foaming device for producing PVC building panels, with the inner threaded cover 12 open, raw material liquid can be injected into the foaming tank 1 through the external threaded inlet 11. By squeezing and twisting the handle 17, the inner threaded cover 12 can be rotated and screwed shut onto the outside of the external threaded inlet 11. The stirring drive motor 2 operates, and the reducer 3 slows down, causing the stirring rod 4 to drive the stirring blade 5 to rotate, stirring the internal raw materials to ensure thorough mixing and foaming. After completion, the lifting drive motor 7 operates, and under the connection of the top frame 6, when the threaded rod 8 rotates forward, it engages with the lifting screw tube 9, causing the piston 10 to slide down, adding pressure to the inside of the foaming tank 1. After the opening and closing valve 13 is opened, the finished foaming liquid can be discharged through the discharge head 14. When the threaded rod 8 reverses, the piston 10 can be reset and continue to circulate. When the piston 10 is pressed down, the one-way valve 15 can remain closed. When the piston 10 slides up, the one-way valve 15 can be opened automatically, and air pressure is supplemented by air intake head 16. In addition, oil can be injected into the inner wall of the lifting screw tube 9 through the oil injection nozzle 18 for convenient lubrication and maintenance. After the oil injection cap 19 is installed on the outside of the oil injection nozzle 18, the inside of the oil injection nozzle 18 can be sealed and protected to prevent dust contamination inside. It can be connected and fixed to the ground through three sets of bottom fixing seats 21, and the foaming tank 1 is supported by the support legs 20 to improve stability.

[0023] The stirring drive motor 2, reducer 3, lifting drive motor 7, opening and closing valve 13, and check valve 15 are commercially available devices known to those skilled in the art. We are simply using them here without making any structural or functional improvements, and we will not elaborate further on them here.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foaming device for producing building PVC sheets, characterized in that, The utility model provides a foaming barrel, stirring drive motor, speed reducer, stirring rod, stirring blade, top frame, lifting drive motor, threaded rod, lifting screw pipe, piston, feed outer thread mouth, inner thread cover, open-close valve and discharge head, the foaming barrel (1) bottom middle part is connected with the top end of speed reducer (3), and the input end of speed reducer (3) is connected with the output end of stirring drive motor (2), and the output end of speed reducer (3) is connected with the bottom end of stirring rod (4), and the outside of stirring rod (4) is connected with the inside of multiple groups of stirring blade (5), and the inside of foaming barrel (1) is vertically slidably connected with the outside of piston (10), and the top middle part of piston (10) is connected with the bottom end of lifting screw pipe (9), and the outside upper side of foaming barrel (1) is connected with the inside left and right side lower end of top frame (6), and the top middle part of top frame (6) is connected with the bottom end of lifting drive motor (7), and the output end of lifting drive motor (7) is connected with the top end of threaded rod (8), and the outer wall of threaded rod (8) is screw connected with the inner wall of lifting screw pipe (9), and the top front side of piston (10) is communicated with the bottom end of feed outer thread mouth (11), and the outer wall of feed outer thread mouth (11) is detachably screw connected with the inner wall of inner thread cover (12), and the bottom rear side of foaming barrel (1) is communicated and is provided with open-close valve (13), and the bottom end of open-close valve (13) is communicated with the top end of discharge head (14).

2. The foaming device for producing building PVC plates according to claim 1, characterized in that: It also includes a one-way valve (15) and an air inlet head (16), the top rear side of the piston (10) is communicated with the bottom end of the one-way valve (15), and the top end of the one-way valve (15) is provided with the air inlet head (16).

3. The foaming device for producing building PVC plates according to claim 1, characterized in that: It also includes a screw handle (17), and the outer end of the inner thread cover (12) is connected with the inner side of the screw handle (17).

4. The foaming device for producing building PVC plates according to claim 1, characterized in that: It also includes an oil injection nozzle (18), and the front end of the lifting screw pipe (9) is communicated with the inner side of the oil injection nozzle (18).

5. The foaming device for producing building PVC plates according to claim 4, characterized in that: It also includes an oil injection cap (19), and the outer side of the oil injection nozzle (18) is detachably installed with the inner side of the oil injection cap (19).

6. The foaming device for producing building PVC plates according to claim 1, characterized in that: It also includes a support leg (20) and a bottom fixing base (21), and the bottom end of the foaming barrel (1) is connected with the top end of a group of support legs (20) on three corner sides, and the bottom end of each group of support legs (20) is connected with the top middle part of a group of bottom fixing bases (21).

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