TPU film extruder with drying mechanism

Abstract

The TPU film extruder with the drying mechanism comprises a working frame, an extrusion box and a mixing box, a feeding opening is formed in the top end of the mixing box, and a baffle is installed in a second installation plate through a pin shaft. The heating box is installed on the side edge of the mixing box, then air supply work can be conducted after an air feeder works, air passes through the interior of the heating box firstly during air supply, then heating treatment can be conducted on air after a heating resistor works, at the moment, the radian of a first arc-shaped groove is matched with the swing radian of the upper portion of a baffle, and therefore the heating effect is improved. The radian of the second arc-shaped groove is matched with the swinging radian of the lower portion of the baffle, so that the baffle is not limited when swinging, meanwhile, the limiting purpose is achieved, the baffle swings outwards when airflow circulates, if materials reach the position during feeding, the baffle swings backwards and then is positioned through the check block, and therefore the anti-backflow purpose is achieved. Therefore, the overall drying capacity is well improved in the working process.

Description

Technical Field

[0001] The utility model relates to the technical field of TPU film extruders, in particular to a TPU film extruder with a drying mechanism. Background Art

[0002] TPU film is a high-performance plastic film material made of thermoplastic polyurethane elastomer. It is a film made on the basis of TPU granules through special processes such as calendering, casting, film blowing, and coating. TPU film has good wear resistance, strength, impact toughness, and waterproofness, so it is widely used by people;

[0003] The production and processing of TPU film requires an extrusion step to achieve the purpose of molding, so a TPU film extruder is used. The monomers of TPU particles contain polyols, and alcohols are hydrophilic. Therefore, TPU film raw materials are prone to excessive moisture absorption before processing. If it is difficult to dry it, it will directly affect the product quality and easily cause blistering and other phenomena. Utility Model Content

[0004] The purpose of the utility model is to provide a TPU film extruder with a drying mechanism to solve the problem that the monomers of the TPU colloid particles mentioned in the above background technology contain polyols, and alcohols are hydrophilic, so the TPU film raw materials are prone to excessive moisture absorption before processing. If it is difficult to dry them, it is easy to directly affect the product quality and easily cause foaming.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a TPU film extruder with a drying mechanism, comprising a working frame, an extrusion box, and a mixing box, a feed port is installed at the top of the mixing box, a working motor is installed at one side of the mixing box, a transmission rod is connected to the output end of the working motor, a stirring rod is installed at the outer wall of the transmission rod, a connecting cylinder is installed at the bottom end of the mixing box, a connecting pipe is connected to one side of the feed port, a heating box is installed at one side of the mixing box, a blower is installed at a position near the bottom end of one side of the heating box, a heating resistor is installed inside the heating box, a drainage pipe is installed on one side of the top of the heating box, a second mounting plate is installed inside the connecting pipe, and a baffle is installed inside the second mounting plate using a pin shaft.

[0006] Preferably, the tail end of the drainage pipe is connected to the interior of the connecting pipe, and the second mounting plate is symmetrically distributed about the central axis of the baffle.

[0007] Preferably, a stopper is fixed on one side of the bottom end of the inner wall of the connecting pipe, a second arc groove is opened inside the bottom end of the connecting pipe, and a first arc groove is opened inside the top end of the connecting pipe.

[0008] Preferably, the baffle plate swings with the pin shaft as the center, the curvature of the first arc-shaped groove matches the upper swing curvature of the baffle plate, and the curvature of the second arc-shaped groove matches the lower swing curvature of the baffle plate.

[0009] Preferably, the stirring rods are evenly distributed on the outer wall of the transmission rod in a staggered manner, and the heating resistors are evenly distributed inside the heating box.

[0010] Preferably, the bottom end of the connecting cylinder is connected to an extrusion box, limiting blocks are fixed on both sides of the top of the inner wall of the extrusion box, an extrusion roller is installed inside the extrusion box, a driving motor is installed at one end of the extrusion box, and a discharge port is installed at the bottom end of the extrusion box.

[0011] Preferably, the limit blocks are symmetrically distributed about the central axis of the extrusion box, and two groups of extrusion rollers are distributed inside the extrusion box.

[0012] Preferably, a first mounting plate is installed on both sides of the inner wall of the extrusion box near the bottom end, a guide plate is installed inside the first mounting plate, a telescopic rod is installed on one side of the guide plate, and buffer cotton is bonded to the outer wall of the bottom end of the guide plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the TPU film extruder with a drying mechanism not only improves the drying capacity, but also improves the guiding capacity and mixing capacity of the TPU film extruder;

[0014] (1) The heating box is installed on the side of the mixing box, and then the air supply can be carried out after the blower is working. When the air is supplied, it will first pass through the inside of the heating box, and then the heating resistor can be operated to heat the gas. Therefore, after the airflow is heated, it will be guided through the guide pipe and connected to the connecting pipe after the guidance. In this way, the feed port position can be dried during feeding. In the inside of the connecting pipe, the second mounting plate and the baffle are connected and installed by a pin. At this time, the curvature of the first arc-shaped groove is adapted to the upper swing curvature of the baffle, and the curvature of the second arc-shaped groove is adapted to the lower swing curvature of the baffle. Therefore, the baffle will not be restricted when it swings, and it also serves the purpose of limiting. When the airflow flows, the baffle swings outward. If the material reaches this position during feeding, the baffle swings backward and is positioned by the block, thereby achieving the purpose of preventing backflow. Therefore, the overall drying capacity is better improved during the working process.

[0015] (2) By installing the limit blocks at the top positions of both sides of the inner wall of the extrusion box, the limit blocks serve the purpose of upper limit, and then the first mounting plate is used to complete the installation of the guide plate. Therefore, the angle of the guide plate can be changed after the telescopic rod works, thereby achieving the purpose of guide adjustment. At the same time, the buffer cotton performs bottom buffering, thereby improving the stable discharge capacity;

[0016] (3) The material is fed from the feed port so that the material reaches the inside of the mixing box, and then the working motor is started to drive the transmission rod to rotate. At this time, the stirring rod is evenly distributed on the outside of the transmission rod, so the stirring rod plays the purpose of sufficient mixing, thereby improving the overall mixing ability during the working process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a front view structural schematic diagram of the utility model;

[0019] Figure 3 It is a schematic diagram of a partial front view cross-sectional structure of the connecting pipe of the utility model;

[0020] Figure 4 It is a partial front view structural schematic diagram of the guide plate of the utility model.

[0021] In the figure: 1. working frame; 2. extrusion box; 3. discharge port; 4. extrusion roller; 5. guide plate; 6. first mounting plate; 7. connecting cylinder; 8. mixing box; 9. working motor; 10. feeding port; 11. transmission rod; 12. stirring rod; 13. connecting pipe; 14. drainage pipe; 15. heating box; 16. heating resistor; 17. blower; 18. limit block; 19. driving motor; 20. first arc groove; 21. second mounting plate; 22. baffle; 23. second arc groove; 24. baffle; 25. telescopic rod; 26. buffer cotton. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model provides an embodiment: a TPU film extruder with a drying mechanism, comprising a working frame 1, an extrusion box 2, and a mixing box 8. A feed port 10 is installed at the top of the mixing box 8, a working motor 9 is installed on one side of the mixing box 8, a transmission rod 11 is connected to the output end of the working motor 9, a stirring rod 12 is installed on the outer wall of the transmission rod 11, a connecting cylinder 7 is installed at the bottom end of the mixing box 8, a connecting pipe 13 is connected to one side of the feed port 10, a heating box 15 is installed on one side of the mixing box 8, a blower 17 is installed near the bottom end of one side of the heating box 15, a heating resistor 16 is installed inside the heating box 15, a drainage pipe 14 is installed on one side of the top of the heating box 15, a second mounting plate 21 is installed inside the connecting pipe 13, and a baffle 22 is installed inside the second mounting plate 21 using a pin shaft.

[0024] The tail end of the drainage tube 14 is connected to the interior of the connecting tube 13 , and the second mounting plate 21 is symmetrically distributed about the central axis of the baffle plate 22 .

[0025] A stopper 24 is fixed to one side of the bottom end of the inner wall of the connecting pipe 13 . A second arc groove 23 is formed inside the bottom end of the connecting pipe 13 . A first arc groove 20 is formed inside the top end of the connecting pipe 13 .

[0026] The baffle plate 22 swings with the pin shaft as the center, the curvature of the first arc-shaped groove 20 matches the upper swing curvature of the baffle plate 22 , and the curvature of the second arc-shaped groove 23 matches the lower swing curvature of the baffle plate 22 .

[0027] The stirring rods 12 are evenly distributed on the outer wall of the transmission rod 11 in a staggered manner, and the heating resistors 16 are evenly distributed inside the heating box 15 .

[0028] The bottom end of the connecting cylinder 7 is connected to the extrusion box 2, and limit blocks 18 are fixed on both sides of the top of the inner wall of the extrusion box 2. An extrusion roller 4 is installed inside the extrusion box 2, a driving motor 19 is installed at one end of the extrusion box 2, and a discharge port 3 is installed at the bottom end of the extrusion box 2.

[0029] The limiting blocks 18 are symmetrically distributed about the central axis of the extrusion box 2 , and there are two groups of extrusion rollers 4 distributed inside the extrusion box 2 .

[0030] A first mounting plate 6 is installed near the bottom of both sides of the inner wall of the extrusion box 2, a guide plate 5 is installed inside the first mounting plate 6, a telescopic rod 25 is installed on one side of the guide plate 5, and a buffer cotton 26 is bonded to the outer wall of the bottom end of the guide plate 5;

[0031] Further, the curvature of the first arc-shaped groove 20 is adapted to the upper swing curvature of the baffle 22, and the curvature of the second arc-shaped groove 23 is adapted to the lower swing curvature of the baffle 22. It should be noted here that both swing curvatures are the curvatures of the baffle 22 swinging with the pin as the center.

[0032] Further, a driving motor 19 drives an extrusion roller 4, and two extrusion rollers 4 are respectively operated by two driving motors 19, forming a one-to-one correspondence mode;

[0033] Further, as required, the same connecting pipe 13 can be installed on the side of the mixing box 8, so that the drainage pipe 14 can be diverted to the position of the connecting pipe 13 on the side of the mixing box 8 to achieve the purpose of sufficient drying.

[0034] Working principle: First, during operation, the feeding is carried out from the position of the feed port 10, and then the heating resistor 16 is operated to heat the gas. Therefore, after the airflow is heated, it is guided through the drainage pipe 14 and then connected to the connecting pipe 13. In this way, the material at the position of the feed port 10 can be dried during feeding. Then the material reaches the inside of the mixing box 8, and the working motor 9 is started to drive the transmission rod 11 to rotate. At this time, the stirring rod 12 is evenly distributed on the outside of the transmission rod 11. After being fully mixed by the stirring rod 12, it passes through the connecting tube 7 to the inside of the extrusion box 2. At this time, the drive motor 19 is started to work, and the drive motor 19 drives the extrusion roller 4 to rotate. The two extrusion rollers 4 work together to complete the extrusion work, and finally the material can be discharged at the position of the discharge port 3.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 indirectly connected 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.

Claims

1. A TPU film extruder with a drying mechanism, comprising a working frame (1), an extrusion box (2), and a mixing box (8), characterized in that: A feed port (10) is installed at the top of the mixing box (8), a working motor (9) is installed on one side of the mixing box (8), a transmission rod (11) is connected to the output end of the working motor (9), a stirring rod (12) is installed on the outer wall of the transmission rod (11), a connecting tube (7) is installed at the bottom of the mixing box (8), a connecting pipe (13) is connected to one side of the feed port (10), a heating box (15) is installed on one side of the mixing box (8), a blower (17) is installed at a position close to the bottom of one side of the heating box (15), a heating resistor (16) is installed inside the heating box (15), a drainage pipe (14) is installed on one side of the top of the heating box (15), a second mounting plate (21) is installed inside the connecting pipe (13), and a baffle (22) is installed inside the second mounting plate (21) using a pin shaft.

2. A TPU film extruder with a drying mechanism according to claim 1, characterized in that: The tail end of the drainage pipe (14) is in communication with the interior of the connecting pipe (13), and the second mounting plate (21) is symmetrically distributed about the central axis of the baffle plate (22).

3. A TPU film extruder with a drying mechanism according to claim 1, characterized in that: A stopper (24) is fixed on one side of the bottom end of the inner wall of the connecting tube (13), a second arc-shaped groove (23) is provided inside the bottom end of the connecting tube (13), and a first arc-shaped groove (20) is provided inside the top end of the connecting tube (13).

4. A TPU film extruder with a drying mechanism according to claim 3, characterized in that: The baffle (22) swings with the pin shaft as the center, the curvature of the first arc-shaped groove (20) matches the upper swing curvature of the baffle (22), and the curvature of the second arc-shaped groove (23) matches the lower swing curvature of the baffle (22).

5. A TPU film extruder with a drying mechanism according to claim 1, characterized in that: The stirring rods (12) are evenly distributed in a staggered manner on the outer wall of the transmission rod (11), and the heating resistors (16) are evenly distributed inside the heating box (15).

6. A TPU film extruder with a drying mechanism according to claim 1, characterized in that: The bottom end of the connecting cylinder (7) is connected to an extrusion box (2), and limit blocks (18) are fixed on both sides of the top of the inner wall of the extrusion box (2). An extrusion roller (4) is installed inside the extrusion box (2), a driving motor (19) is installed at one end of the extrusion box (2), and a discharge port (3) is installed at the bottom end of the extrusion box (2).

7. A TPU film extruder with a drying mechanism according to claim 6, characterized in that: The limit blocks (18) are symmetrically distributed about the central axis of the extrusion box (2), and two groups of extrusion rollers (4) are distributed inside the extrusion box (2).

8. The TPU film extruder with a drying mechanism according to claim 1, characterized in that: A first mounting plate (6) is installed at positions close to the bottom end on both sides of the inner wall of the extrusion box (2), a guide plate (5) is installed inside the first mounting plate (6), a telescopic rod (25) is installed on one side of the guide plate (5), and a buffer cotton (26) is bonded to the outer wall of the bottom end of the guide plate (5).

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