Miniature screw type extrusion equipment for coating hot melt adhesive film

Abstract

The utility model relates to the technical field of extrusion equipment, and discloses micro screw type extrusion equipment for coating a hot melt adhesive film, which comprises an adhesive extrusion barrel, a water storage cavity is arranged at the edge of the top of the adhesive extrusion barrel, and an extrusion channel penetrating through the surface of the adhesive extrusion barrel is arranged in the middle of the top of the adhesive extrusion barrel. A first cover plate and a second cover plate are fixedly mounted in the two openings in the top of the glue extruding barrel respectively, and a water inlet communicated with the water storage cavity is formed in the first cover plate. By arranging the switch assembly, when the interior of the equipment is cleaned, only the switch assembly needs to be driven to rotate, the water inlet of the first cover plate is opened by the blocking block, meanwhile, the corresponding water outlet holes can be opened by the water retaining strips respectively, and then cleaning water can be continuously pumped into the water storage cavity through external water supply equipment; and then the glue is injected into all positions in the glue extruding barrel through the water outlet hole, and the material extruding screw rod is driven to rotate, so that the cleaning operation is more convenient and faster, and the cleaning efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion equipment, in particular to a micro screw extrusion equipment for coating hot melt adhesive film. Background Art

[0002] Hot melt adhesive film is a form of hot melt adhesive, usually used to bond, seal or cover the surface of materials. It is a thin film formed by hot melt adhesive material melted at a certain temperature and applied to the surface of the substrate through a special process. This film will soften at temperature so that it can be bonded to other materials, and then solidify after cooling to form a strong bond.

[0003] The micro screw extruder used for coating hot melt adhesive film in the prior art (Announcement No.: CN220697253U) adopts vertically arranged screws and feeding screws, and integrates the feeding structure and the discharging structure through a barrel connecting sleeve, so that the overall structure of the equipment is compact. However, the equipment needs to be cleaned after the extrusion is completed, and the equipment often needs to be disassembled to complete the cleaning. The disassembly and assembly operations of various joints are complicated and the cleaning efficiency is low. Therefore, it is urgent to design a micro screw extruder used for coating hot melt adhesive film that is easy to clean. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a micro screw extrusion device for coating hot melt adhesive film.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A micro screw extruder for coating a hot melt adhesive film comprises a glue extrusion barrel, a water storage cavity is provided at the top edge of the glue extrusion barrel, an extrusion channel penetrating the surface of the glue extrusion barrel is provided in the middle of the top of the glue extrusion barrel, a first cover plate and a second cover plate are respectively fixedly installed in two openings at the top of the glue extrusion barrel, the first cover plate is provided with a water inlet connected to the water storage cavity, a plurality of water outlets connected to the water storage cavity are provided on the inner wall of the extrusion channel, a switch assembly is rotatably installed in the water storage cavity, the switch assembly comprises two circular rings and a plurality of water retaining bars, the two circular rings are respectively fixedly installed at the two ends of the plurality of water retaining bars, a blocking block for blocking the water inlet is provided on one side of the circular ring, and a transmission shaft is fixedly installed on the top of the circular ring.

[0007] As a further solution of the utility model, the far sides of the two circular rings respectively abut against the bottom of the water storage chamber and the bottom of the first cover plate. The top of the first cover plate is provided with an arc hole adapted to the transmission shaft, and the top end of the transmission shaft passes through the arc hole and is slidably connected thereto.

[0008] As a further solution of the utility model, an extrusion screw is rotatably installed in the middle of the bottom of the second cover plate, a servo motor is fixedly installed in the middle of the top of the second cover plate, the output end of the servo motor passes through the surface of the second cover plate and is fixedly installed on the top of the extrusion screw, a feed port for adding materials is provided on one side of the top of the second cover plate, a chamfer is provided on the top of the feed port, and a glue discharge head is fixedly installed in the open bottom of the glue extrusion barrel.

[0009] As a further solution of the utility model, a gear is rotatably installed on one side of the top of the first cover plate, and a support frame with a V-shaped structure is fixedly installed in the middle of the top of the gear. Both ends of the support frame are provided with installation grooves, and a glue inlet nozzle and a water inlet nozzle are fixedly installed in the two installation grooves respectively. The bottom ends of the glue inlet nozzle and the water inlet nozzle are chamfered, and a three-way pipe is fixedly installed on one side of the top of the first cover plate, and the three-way pipe is provided with a water inlet end and two water outlet ends, and the two water outlet ends are respectively connected to the water inlet and the water inlet nozzle through water pipes.

[0010] As a further solution of the utility model, a plurality of countersunk holes are circumferentially opened at the top of both ends of the support frame, a tension spring is fixedly installed in each of the countersunk holes, a slider is slidably installed in each of the countersunk holes, the top of each tension spring is fixedly installed on the bottom of the corresponding slider, and a plurality of connecting strips are fixedly installed on the top edges of the glue inlet nozzle and the water inlet nozzle, and each of the connecting strips is fixedly installed on the top of the corresponding slider.

[0011] As a further solution of the utility model, a rack and an adapter block are slidably installed on one side of the top of the first cover plate, the rack is meshed with the gear, one end of the rack is fixedly installed on one side of the adapter block, and a waist groove hole adapted to the transmission shaft is opened on the top of the adapter block.

[0012] As a further solution of the utility model, the adapter block is slidably sleeved on the surface of the transmission shaft through a waist groove hole, an electric telescopic rod is fixedly installed on one side of the top of the first cover plate, and the telescopic end of the electric telescopic rod is fixedly installed on the other side of the adapter block.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] By setting two circular rings, multiple water retaining bars and a blocking block to form a switch assembly, when the inside of the equipment needs to be cleaned, it is only necessary to start the electric telescopic rod to drive the adapter block to move, and the moving block drives the transmission shaft to slide along the arc hole through the waist groove hole, thereby driving the switch assembly to rotate, so that the blocking block opens the water inlet of the first cover plate, and at the same time, each water retaining bar opens the corresponding water outlet hole, so that the external water supply equipment can continuously pump the cleaning water into the water storage chamber, and then pour it into various places inside the rubber extrusion barrel through the water outlet hole, and at the same time drive the extrusion screw to rotate, making the cleaning operation more convenient, avoiding the disadvantage of needing to disassemble the equipment for cleaning, and improving the cleaning efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a micro screw extruder for coating a hot melt adhesive film proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the top view of a micro screw extruder for coating a hot melt adhesive film proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a glue extrusion barrel of a micro screw extruder for coating a hot melt adhesive film proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of the support frame structure of a micro screw extruder for coating a hot melt adhesive film proposed by the utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of a glue extrusion barrel of a micro screw extruder for coating a hot melt adhesive film proposed by the utility model;

[0020] Figure 6 The utility model discloses a switch assembly structure schematic diagram of a micro screw extruder for coating a hot melt adhesive film.

[0021] In the figure: 1. glue extrusion cylinder; 2. glue outlet head; 3. first cover plate; 4. second cover plate; 5. three-way pipe; 6. servo motor; 7. support frame; 8. gear; 9. rack; 10. electric telescopic rod; 11. glue inlet nozzle; 12. water inlet nozzle; 13. water storage chamber; 14. water outlet hole; 15. extrusion screw; 16. switch assembly; 17. adapter block; 18. tension spring; 19. slider; 20. connecting strip; 1601. ring; 1602. blocking block; 1603. water retaining strip; 1604. transmission shaft. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Reference Figure 1-Figure 6 A micro screw extruder for coating a hot melt adhesive film comprises a glue extrusion barrel 1, a water storage chamber 13 is provided at the top edge of the glue extrusion barrel 1, a material extrusion channel penetrating the surface of the glue extrusion barrel 1 is provided in the middle of the top of the glue extrusion barrel 1, a first cover plate 3 and a second cover plate 4 are respectively fixedly installed in two openings at the top of the glue extrusion barrel 1, the first cover plate 3 is provided with a water inlet connected to the water storage chamber 13, a plurality of water outlet holes 14 connected to the water storage chamber 13 are provided on the inner wall of the material extrusion channel, a switch assembly 16 is rotatably installed in the water storage chamber 13, and the switch assembly 16 comprises two circular rings 1601 and a plurality of water retaining bars 1603, the two circular rings 1601 are respectively fixedly installed at both ends of the plurality of water retaining bars 1603, and one side of the circular ring 1601 is provided with a water inlet for blocking the water inlet A blocking block 1602 is provided at the mouth, and a transmission shaft 1604 is fixedly installed on the top of the ring 1601. The far sides of the two rings 1601 are respectively against the bottom of the water storage chamber 13 and the bottom of the first cover plate 3. An arc hole adapted to the transmission shaft 1604 is provided on the top of the first cover plate 3. The top of the transmission shaft 1604 passes through the arc hole and is slidably connected with it. An extrusion screw 15 is rotatably installed in the middle of the bottom of the second cover plate 4. A servo motor 6 is fixedly installed in the middle of the top of the second cover plate 4. The output end of the servo motor 6 passes through the surface of the second cover plate 4 and is fixedly installed with the top of the extrusion screw 15. A feeding port for adding materials is provided on one side of the top of the second cover plate 4, and a chamfer is provided on the top of the feeding port. A glue discharge head 2 is fixedly installed in the open bottom of the glue extrusion cylinder 1.

[0026] When in use, a switch assembly 16 is formed by setting two circular rings 1601, multiple water retaining bars 1603 and a blocking block 1602. When the inside of the equipment needs to be cleaned, it is only necessary to drive the transmission shaft 1604 to slide along the arc hole, thereby driving the switch assembly 16 to rotate, so that the blocking block 1602 opens the water inlet of the first cover plate 3, and at the same time, each water retaining bar 1603 opens the corresponding water outlet hole 14, so that the external water supply equipment can continuously pump the cleaning water into the water storage chamber 13, and then pour it into various places inside the rubber extrusion barrel 1 through the water outlet hole 14, and at the same time drive the extrusion screw 15 to rotate, making the cleaning operation more convenient, avoiding the disadvantage of needing to disassemble the equipment for cleaning, and improving the cleaning efficiency of the equipment.

[0027] In this embodiment, a gear 8 is rotatably installed on one side of the top of the first cover plate 3, and a support frame 7 with a V-shaped structure is fixedly installed in the middle of the top of the gear 8. Installation grooves are provided at both ends of the support frame 7, and a glue inlet nozzle 11 and a water inlet nozzle 12 are fixedly installed in the two installation grooves respectively. The bottom ends of the glue inlet nozzle 11 and the water inlet nozzle 12 are provided with chamfers, and a three-way pipe 5 is fixedly installed on one side of the top of the first cover plate 3. The three-way pipe 5 is provided with a water inlet end and two water outlet ends, and the two water outlet ends are respectively connected to the water inlet and the water inlet nozzle 12 through water pipes. A plurality of countersunk holes are circumferentially opened on the top of both ends of the support frame 7, a tension spring 18 is fixedly installed in each countersunk hole, a slider 19 is slidably installed in each countersunk hole, the top of each tension spring 18 is fixedly installed with the bottom of the corresponding slider 19, and a plurality of connecting strips 20 are fixedly installed on the top edges of the glue inlet nozzle 11 and the water inlet nozzle 12, and each connecting strip 20 is fixedly installed on the top of the corresponding slider 19.

[0028] When in use, the water inlet end of the three-way pipe 5 is connected to the external water supply equipment. By setting up the support frame 7, when the equipment needs to be cleaned, the switch assembly 16 can be turned while driving the support frame 7 to rotate a certain angle, so that the glue inlet nozzle 11 located at the feed port is replaced by the water inlet nozzle 12, which is convenient for adding a portion of cleaning water from the top of the extrusion channel to clean the inside and the extrusion screw 15, thereby further improving the cleaning efficiency of the equipment. By setting up the tension spring 18, the slider 19 and the connecting strip 20, when the glue inlet nozzle 11 or the water inlet nozzle 12 moves to the feed port, under the pulling force of multiple tension springs 18, the glue inlet nozzle 11 or the water inlet nozzle 12 is driven to embed into the feed port, and the chamfered surfaces are fitted together, so that whether it is adding glue liquid or cleaning liquid, the whole process is very stable, thereby improving the practicability of the equipment.

[0029] In this embodiment, a rack 9 and an adapter block 17 are slidably installed on one side of the top of the first cover plate 3, the rack 9 is meshed with the gear 8, one end of the rack 9 is fixedly installed on one side of the adapter block 17, a waist groove hole adapted to the transmission shaft 1604 is opened on the top of the adapter block 17, and the adapter block 17 is slidably sleeved on the surface of the transmission shaft 1604 through the waist groove hole, and an electric telescopic rod 10 is fixedly installed on one side of the top of the first cover plate 3, and the telescopic end of the electric telescopic rod 10 is fixedly installed on the other side of the adapter block 17.

[0030] When in use, the adapter block 17 can be pulled by starting the electric telescopic rod 10, and the adapter block 17 drives the rack 9 to slide, and then drives the gear 8 to rotate. The rotation of the gear 8 can drive the support frame 7 to rotate a certain angle, so that the glue inlet nozzle 11 and the water inlet nozzle 12 are interchanged. During the sliding process of the adapter block 17, the rotating shaft 1604 is driven to move along the arc hole through the waist groove hole, and then the switch assembly 16 is driven to open the water inlet and multiple water outlet holes 14, thereby improving the linkage consistency of the equipment.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A micro screw extruder for coating a hot melt adhesive film, comprising an extrusion cylinder (1), characterized in that: The top edge of the rubber extrusion cylinder (1) is provided with a water storage cavity (13), the middle of the top of the rubber extrusion cylinder (1) is provided with an extrusion channel penetrating the surface thereof, a first cover plate (3) and a second cover plate (4) are respectively fixedly mounted in two openings at the top of the rubber extrusion cylinder (1), the first cover plate (3) is provided with a water inlet connected to the water storage cavity (13), the inner wall of the extrusion channel is provided with a plurality of water outlet holes (14) connected to the water storage cavity (13), a switch assembly (16) is rotatably mounted in the water storage cavity (13), the switch assembly (16) comprises two circular rings (1601) and a plurality of water retaining bars (1603), the two circular rings (1601) are respectively fixedly mounted at the two ends of the plurality of water retaining bars (1603), a blocking block (1602) for blocking the water inlet is provided on one side of the circular ring (1601), and a transmission shaft (1604) is fixedly mounted on the top of the circular ring (1601).

2. A micro screw extruder for coating a hot melt adhesive film according to claim 1, characterized in that: The far sides of the two circular rings (1601) respectively abut against the bottom of the water storage chamber (13) and the bottom of the first cover plate (3); the top of the first cover plate (3) is provided with an arc hole adapted to the transmission shaft (1604); the top end of the transmission shaft (1604) passes through the arc hole and is slidably connected thereto.

3. A micro screw extruder for coating a hot melt adhesive film according to claim 1, characterized in that: An extrusion screw (15) is rotatably mounted in the middle of the bottom of the second cover plate (4), a servo motor (6) is fixedly mounted in the middle of the top of the second cover plate (4), an output end of the servo motor (6) passes through the surface of the second cover plate (4) and is fixedly mounted on the top of the extrusion screw (15), a feed port for feeding is provided on one side of the top of the second cover plate (4), a chamfer is provided on the top of the feed port, and a glue discharge head (2) is fixedly mounted in the bottom opening of the glue extrusion cylinder (1).

4. A micro screw extruder for coating a hot melt adhesive film according to claim 1, characterized in that: A gear (8) is rotatably mounted on one side of the top of the first cover plate (3); a support frame (7) with a V-shaped structure is fixedly mounted in the middle of the top of the gear (8); mounting grooves are provided at both ends of the support frame (7); a glue feed nozzle (11) and a water feed nozzle (12) are fixedly mounted in the two mounting grooves respectively; chamfers are provided at the bottom ends of the glue feed nozzle (11) and the water feed nozzle (12); a three-way pipe (5) is fixedly mounted on one side of the top of the first cover plate (3); the three-way pipe (5) is provided with a water inlet end and two water outlet ends; the two water outlet ends are respectively connected to the water inlet and the water inlet nozzle (12) through water pipes.

5. A micro screw extruder for coating a hot melt adhesive film according to claim 4, characterized in that: The top of both ends of the support frame (7) are provided with a plurality of countersunk holes in a circular shape, a tension spring (18) is fixedly installed in each of the countersunk holes, a slider (19) is slidably installed in each of the countersunk holes, the top of each tension spring (18) is fixedly installed with the bottom of the corresponding slider (19), and the top edges of the glue inlet nozzle (11) and the water inlet nozzle (12) are fixedly installed with a plurality of connecting strips (20), and each of the connecting strips (20) is fixedly installed with the top of the corresponding slider (19).

6. The micro screw extruder for coating hot melt adhesive film according to claim 1, characterized in that: A rack (9) and an adapter block (17) are slidably mounted on one side of the top of the first cover plate (3); the rack (9) is meshed with the gear (8); one end of the rack (9) is fixedly mounted on one side of the adapter block (17); and a waist groove hole adapted to the transmission shaft (1604) is provided on the top of the adapter block (17).

7. A micro screw extruder for coating a hot melt adhesive film according to claim 6, characterized in that: The adapter block (17) is slidably sleeved on the surface of the transmission shaft (1604) through a waist groove hole, and an electric telescopic rod (10) is fixedly installed on one side of the top of the first cover plate (3), and the telescopic end of the electric telescopic rod (10) is fixedly installed on the other side of the adapter block (17).

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