A uniform coating extrusion device

Abstract

This utility model discloses a uniformly applied glue extrusion device, belonging to the technical field of glue extrusion devices. It includes a glue cylinder with a glue-adding tube fixedly connected to its upper surface. A hydraulic cylinder is fixedly connected to the top of the glue cylinder, and a piston is fixedly connected to the bottom of the hydraulic cylinder. The piston has a trapezoidal vertical cross-section, and the bottom of the glue cylinder is arc-shaped corresponding to the piston. A glue dispensing mechanism is located at the glue outlet at the bottom of the glue cylinder, used to reduce glue residue. Through this method, the piston can be completely moved to the bottom of the glue cylinder, allowing it to fit against the bottom and extruding the glue from the cylinder, preventing glue residue. A motor drives a driven gear to rotate, causing a spiral blade to rotate within the connecting tube, uniformly discharging the glue into the glue tube, improving the uniformity of glue dispensing. Furthermore, the spiral blade's action moves the glue, preventing residue.

Description

Technical Field

[0001] This utility model relates to the field of extrusion device technology, specifically to an extrusion device for uniformly applying adhesive. Background Technology

[0002] A glue applicator, also known as a coating machine, glue scraper, or automatic glue sprayer, is a mechanical device mainly used to apply liquid glue to the surface of textiles, cardboard boxes, or leather. There are many types of glue applicators available, such as drum glue applicators, double-acting glue applicators, and double-station lifting glue applicators. The equipment adopts three-axis linkage and automated operation, and is equipped with computer programming control for path spraying. The spraying thickness and time can be set, making it simple and easy to operate.

[0003] Currently, a Chinese patent discloses an extrusion device for a glue applicator (authorization announcement number CN210847009U). This invention achieves glue extrusion by controlling the downward movement of the hydraulic cylinder to drive the piston plate downward. Compared with traditional glue extruders that use a negative pressure pump for glue extrusion, the extrusion structure of this invention is simpler and more stable.

[0004] Because the bottom of the glue bucket in the above device is conical and the diameter of the piston plate is fixed, the piston plate cannot move completely to the bottom of the glue bucket, so it cannot squeeze out all the glue at the bottom of the glue bucket, and a lot of glue remains at the bottom of the glue bucket.

[0005] Based on this, the present invention designs a uniformly applied adhesive extrusion device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a uniform coating extrusion device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A uniformly applied adhesive extrusion device includes an adhesive cylinder, a glue-adding tube fixedly connected to the upper part of the adhesive cylinder surface, a hydraulic cylinder fixedly connected to the top of the adhesive cylinder, a piston fixedly connected to the bottom of the hydraulic cylinder, the piston having a trapezoidal vertical cross-section, and the bottom of the adhesive cylinder being an arc shape corresponding to the piston; and an adhesive dispensing mechanism disposed at the adhesive dispensing port at the bottom of the adhesive cylinder, the adhesive dispensing mechanism being used to reduce adhesive residue.

[0009] Furthermore, the glue dispensing mechanism includes a connecting pipe fixedly connected to the bottom of the glue cylinder, and a plurality of heating tubes are evenly arranged on the inner wall of the connecting pipe;

[0010] Furthermore, a fixed frame is fixedly connected to the inner wall of the connecting pipe, a spiral blade is rotatably connected to the fixed frame, a glue outlet tube is fixedly connected to the bottom of the spiral blade, a driven gear is fixedly connected to the upper part of the surface of the glue outlet tube, a motor is fixedly installed on the surface of the connecting pipe, and a driving gear that meshes with the driven gear is provided at the output shaft end of the motor.

[0011] Furthermore, the bottom of the dispensing tube is fitted to the bottom of the connecting tube, and the minimum inner diameter of the dispensing tube and the connecting tube are the same;

[0012] Furthermore, a sealing ring is provided on the outer wall of the piston, and the sealing ring is fitted into the inner wall of the rubber sleeve;

[0013] Furthermore, the driven gear is provided with a through hole for allowing glue to flow from the connecting pipe into the glue tube;

[0014] Furthermore, the inner wall of the glue tube, the inner wall of the connecting pipe, the inner wall of the glue outlet pipe, and the surface of the spiral blades are all coated with Teflon to reduce glue residue.

[0015] Furthermore, the surface of the rubber tube is provided with a one-way inward air inlet pipe.

[0016] Beneficial effects

[0017] The piston and the bottom of the glue tube are specially designed so that the piston can move completely to the bottom of the glue tube, making the piston fit against the bottom of the glue tube and squeezing out the glue inside the glue tube, thus preventing glue residue from remaining inside the glue tube. The motor drives the driven gear to rotate, which causes the spiral blade to rotate inside the connecting tube, discharging the glue evenly from the glue tube, improving the uniformity of glue dispensing. The spiral blade also moves the glue, preventing glue residue. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 The main structure of the extrusion device for uniform coating according to this utility model is three-dimensional. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the dispensing mechanism of a uniform coating extrusion device according to the present invention.

[0021] Figure 3This is a schematic diagram of the piston structure of a uniformly coated adhesive extrusion device according to the present invention;

[0022] Figure 4 The main structure of the extrusion device for uniform coating according to this utility model is three-dimensional. Figure 2 .

[0023] The labels in the diagram represent:

[0024] 101. Glue cartridge; 102. Hydraulic cylinder; 103. Piston; 104. Sealing ring; 105. Glue dispensing tube; 200. Glue dispensing mechanism; 201. Connecting tube; 202. Fixing frame; 203. Spiral blade; 204. Motor; 205. Drive gear; 206. Glue dispensing tube; 207. Driven gear; 208. Heating tube. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4 A glue-applying device for uniform application includes a glue cylinder 101, a glue-applying tube 105 fixedly connected to the upper part of the glue cylinder 101, a hydraulic cylinder 102 fixedly connected to the top of the glue cylinder 101, a piston 103 fixedly connected to the bottom of the hydraulic cylinder 102, the piston 103 having a trapezoidal vertical cross-section, and the bottom of the glue cylinder 101 being an arc shape corresponding to the piston 103; and a glue dispensing mechanism 200 located at the glue outlet at the bottom of the glue cylinder 101, the glue dispensing mechanism 200 being used to reduce glue residue.

[0028] In this embodiment of the utility model, glue is added into the glue cylinder 101 through the glue adding tube 105, and the hydraulic cylinder 102 is activated. Under the action of the hydraulic cylinder 102, the piston 103 is driven to move downward. The downward movement of the piston 103 pushes out the glue in the glue cylinder 101. Since the bottom of the glue cylinder 101 is correspondingly set with the bottom of the piston 103, the piston 103 can move to the bottom of the glue cylinder 101 until it is in contact with it, squeezing out the glue inside the glue cylinder 101.

[0029] In this embodiment of the utility model, since the piston 103 can be completely moved to the bottom of the glue tube 101, the glue in the glue tube 101 can be completely squeezed out by the piston 103, avoiding residual water remaining on the inner wall of the glue tube 101.

[0030] In one embodiment of this utility model, the hydraulic cylinder 102 is an actuator in the hydraulic transmission system. It is an energy conversion device that converts hydraulic energy into mechanical energy. It has a simple structure, reliable operation, and strong stability, which enables the piston 103 to move at a uniform speed, thereby controlling the water to be squeezed out evenly from the glue cylinder 101, which facilitates the uniform application of glue in the future.

[0031] In some embodiments, such as Figure 1-4 As shown in the preferred embodiment of this utility model, the glue dispensing mechanism 200 includes a connecting pipe 201 fixedly connected to the bottom of the glue cylinder 101. Multiple heating tubes 208 are evenly arranged on the inner wall of the connecting pipe 201. A fixing frame 202 is fixedly connected to the inner wall of the connecting pipe 201. A spiral blade 203 is rotatably connected to the fixing frame 202. A glue dispensing tube 206 is fixedly connected to the bottom of the spiral blade 203. A driven gear 207 is fixedly connected to the upper part of the surface of the glue dispensing tube 206. A motor 204 is fixedly mounted on the surface of the connecting pipe 201. A driving gear 205 that meshes with the driven gear 207 is provided at the output shaft end of the motor 204. The bottom of the glue dispensing tube 206 is in contact with the bottom of the connecting pipe 201, and the minimum inner diameter of the glue dispensing tube 206 and the connecting pipe 201 are the same.

[0032] In this embodiment of the utility model, the motor 204 is started, driving the drive gear 205 to rotate. The rotation of the drive gear 205 drives the driven gear 207 to rotate, thereby causing the spiral blade 203 to rotate on the fixed frame 202. The rotation of the spiral blade 203 causes the glue to be discharged. The glue flows from the connecting pipe 201 into the glue tube 206 and connects with the glue applicator.

[0033] In this embodiment of the utility model, the driven gear 207 is driven by the motor 204 to rotate at a constant speed, thereby causing the spiral blade 203 to rotate at a constant speed inside the connecting tube 201. This allows the glue to flow evenly from the connecting tube 201 into the glue tube 206, making it easier for the glue applicator to spread the glue evenly. Inside the connecting tube 201, a heating tube 208 is provided to heat the glue, keeping it in a liquid state and preventing the glue from solidifying and clogging the connecting tube 201.

[0034] In some embodiments, such as Figure 1-4As shown, in a preferred embodiment of this utility model, a sealing ring 104 is provided on the outer wall of the piston 103, and the sealing ring 104 is fitted against the inner wall of the glue cylinder 101. A through hole is provided on the driven gear 207 to allow glue to flow from the connecting pipe 201 into the glue outlet pipe 206. The inner walls of the glue cylinder 101, the connecting pipe 201, the glue outlet pipe 206, and the surface of the spiral blade 203 are all coated with Teflon to reduce glue residue. A one-way inward air inlet pipe is provided on the surface of the glue cylinder 101.

[0035] In this embodiment of the invention, after the adhesive is completely squeezed out of the glue cylinder 101, the piston 103 moves upward. At this time, air enters the glue cylinder 101 through the air inlet pipe, preventing negative pressure from being generated inside the glue cylinder 101 and drawing the adhesive back into the glue cylinder 101. The Teflon coating reduces adhesive residue on the walls, ensuring a stable dispensing rate. The Teflon coating effectively reduces adhesive residue by lowering surface energy and non-stick properties, making it particularly suitable for low-to-medium temperature applications and scenarios involving non-corrosive adhesives.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A uniformly applied adhesive extrusion device, comprising an adhesive cylinder (101), wherein an adhesive application tube (105) is fixedly connected to the upper part of the surface of the adhesive cylinder (101), and a hydraulic cylinder (102) is fixedly connected to the top of the adhesive cylinder (101), characterized in that: A piston (103) is fixedly connected to the bottom of the hydraulic cylinder (102). The piston (103) has a trapezoidal vertical cross-section, and the bottom of the rubber cylinder (101) is set as an arc shape corresponding to the piston (103). A glue dispensing mechanism (200) is provided at the glue outlet at the bottom of the glue cylinder (101), and the glue dispensing mechanism (200) is used to reduce glue residue.

2. The uniform coating extrusion device according to claim 1, characterized in that, The dispensing mechanism (200) includes a connecting pipe (201) fixedly connected to the bottom of the glue cylinder (101), and a plurality of heating tubes (208) are evenly arranged on the inner wall of the connecting pipe (201).

3. The uniform coating extrusion device according to claim 2, characterized in that, A fixing frame (202) is fixedly connected to the inner wall of the connecting pipe (201). A spiral blade (203) is rotatably connected to the fixing frame (202). A glue outlet pipe (206) is fixedly connected to the bottom of the spiral blade (203). A driven gear (207) is fixedly connected to the upper part of the surface of the glue outlet pipe (206). A motor (204) is fixedly installed on the surface of the connecting pipe (201). A drive gear (205) that meshes with the driven gear (207) is provided at the output shaft end of the motor (204).

4. The uniform coating extrusion device according to claim 3, characterized in that, The bottom of the dispensing tube (206) is attached to the bottom of the connecting tube (201), and the minimum inner diameter of the dispensing tube (206) and the connecting tube (201) is the same.

5. The uniform coating extrusion device according to claim 1, characterized in that, A sealing ring (104) is provided on the outer wall of the piston (103), and the sealing ring (104) is fitted to the inner wall of the rubber sleeve (101).

6. The uniform coating extrusion device according to claim 3, characterized in that, The driven gear (207) has a through hole for allowing glue to flow from the connecting pipe (201) into the glue tube (206).

7. The uniform coating extrusion device according to claim 6, characterized in that, The inner wall of the glue tube (101), the inner wall of the connecting pipe (201), the inner wall of the glue outlet pipe (206), and the surface of the spiral blade (203) are all coated with Teflon to reduce glue residue.

8. The uniform coating extrusion device according to claim 1, characterized in that, The surface of the rubber tube (101) is provided with a one-way inward air inlet pipe.

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