Feeding device for casting machine

Abstract

The utility model discloses a feeding device for a casting machine, and belongs to the technical field of raw material feeding of casting machines. Comprising an extrusion outer shell and a positioning inner shell, the extrusion outer shell comprises an extrusion head, the extrusion head is fixedly connected with two arc-shaped shells, first spiral grooves are formed in the inner arc surfaces of the arc-shaped shells, the arc-shaped shells are in threaded connection with the positioning inner shell through threaded structures, and arc-shaped grooves are formed in the two sides of the positioning inner shell; a rectangular through groove is formed in the positioning inner shell, a second spiral groove is formed in the positioning inner shell along the inner arc face of the arc-shaped groove, the feeding device is used for plastic particle raw material melting feeding of the casting machine, and plastic particles can be evenly, quantitatively and continuously fed to a double-screw extrusion structure; and the effect of continuously and stably extruding plastic molten materials to casting machine equipment can be achieved by combining the double screws, the extrusion outer shell and the positioning inner shell can be assembled and connected, and regular maintenance operation can be conveniently conducted on the double-screw extrusion structure.

Description

Technical Field

[0001] The present application relates to the technical field of raw material feeding for tape casting machines, and more specifically, to a feeding device for tape casting machines. Background Art

[0002] Cast film machine is a special equipment for making cast film. The main raw material is plastic particles. Generally, a single-screw extruder is used to plasticize, melt and extrude the plastic particles. Then the auxiliary module of the cast film machine is used to assist in the casting, trimming, flattening and winding processes. The material transmission in the single-screw extruder mainly relies on friction drag and viscous drag, which may cause difficulties in feeding in some cases, resulting in the inability to achieve uniform, quantitative and stable feeding. In view of this, we propose a feeding device for cast film machine. Utility Model Content

[0003] 1. Technical problems to be solved

[0004] The purpose of this application is to provide a feeding device for a cast film machine, which solves the technical problems in the above-mentioned background technology and realizes that the feeding device is used for the melt feeding of plastic particle raw materials for the cast film machine, and can realize the uniform, quantitative and continuous feeding of plastic particles to the twin-screw extrusion structure, and combined with the twin-screw, it can realize the effect of continuously and stably extruding plastic melt into the cast film machine equipment. The extrusion outer shell and the positioning inner shell can be assembled and connected, which facilitates the regular maintenance operations of the twin-screw extrusion structure.

[0005] 2. Technical solution

[0006] The technical solution of the present application provides a feeding device for a tape casting machine, comprising: an extrusion outer shell and a positioning inner shell, the extrusion outer shell includes an extrusion head, the extrusion head is fixedly connected to two arc-shaped shells, the inner arc surface of the arc shell is provided with a first spiral groove, the arc shell and the positioning inner shell are threadedly connected by a threaded structure, both sides of the positioning inner shell are provided with an arc groove, a rectangular through groove is provided in the positioning inner shell, a second spiral groove is provided along the inner arc surface of the arc groove of the positioning inner shell, a particle feeding mechanism is connected to the positioning inner shell, an extrusion mechanism is installed between the extrusion outer shell and the positioning inner shell, and a heating plate and a heat insulation plate are fixedly installed at the bottom end of the positioning inner shell;

[0007] The particle feeding mechanism includes a hopper, the hopper is fixedly connected to a feeding pipe, a ball valve seat is provided on the feeding pipe, a transmission rod is rotatably mounted on the ball valve seat, and the transmission rod is located in the ball valve seat and is fixedly connected to a ball head, and the bottom end of the feeding pipe is fixedly connected to a positioning inner shell;

[0008] The extrusion mechanism includes two screws, which are rotatably arranged in an arc-shaped groove, and the screws are meshed with each other. A rotating shaft is fixedly provided at one end of the screw near the hopper, and the rotating shaft movably passes through the positioning inner shell and is fixedly connected with a gear. The two gears are meshed and connected, and a belt mechanism is connected between the transmission rod and a rotating shaft. The heat insulation plate is fixedly connected to an L-shaped mounting seat, and a drive motor is detachably limited and installed on the L-shaped mounting seat. The output shaft of the drive motor is connected to a rotating shaft for transmission, and the transmission rod and the rotating shaft are both rotatably connected to the L-shaped mounting seat.

[0009] Optionally, two first limiting bars are fixedly provided on the arc-shaped shell, and second limiting bars are fixedly provided at the four corners of the positioning inner shell, and the first limiting bars are respectively threadedly connected to the corresponding second limiting bars with multiple bolts.

[0010] Optionally, two seals are detachably mounted on the arc-shaped shell, and sealing grooves are provided on both side surfaces of the positioning inner shell, and the seals are embedded in the corresponding sealing grooves.

[0011] Optionally, the arc grooves on both sides of the positioning inner shell are connected through a rectangular through groove, the meshing connection part of the screw is arranged at the rectangular through groove, and the bottom end of the feeding pipe is connected to the rectangular through groove.

[0012] Optionally, the heat insulation plate is arranged at the bottom of the heating plate, and the heat insulation plate is larger than the heating plate.

[0013] Optionally, a clamping ring is fixedly sleeved on the outside of the hopper, and a connecting plate is fixedly connected between the clamping ring and the L-shaped mounting seat.

[0014] Optionally, the ball head in the ball valve seat is provided with a through-hole structure, and the ball head in the ball valve seat is connected to the hopper and the feed pipe through the through-hole structure.

[0015] 3. Beneficial effects

[0016] One or more technical solutions provided in the technical solution of the present application have at least the following technical effects or advantages: the feeding device is used for feeding the plastic particle raw material melt of the cast film machine, which can realize the uniform, quantitative and continuous feeding of the plastic particles to the twin-screw extrusion structure, and combined with the twin-screw, it can realize the continuous and stable extrusion of the plastic melt to the cast film machine equipment. The extrusion outer shell and the positioning inner shell can be assembled and connected, which is convenient for regular maintenance operations of the twin-screw extrusion structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a feeding device for a tape casting machine disclosed in a preferred embodiment of the present application;

[0018] Figure 2This is a schematic diagram of a partially exploded structure of a feeding device for a tape casting machine disclosed in a preferred embodiment of the present application;

[0019] Figure 3 A feeding device for a tape casting machine disclosed in a preferred embodiment of the present application Figure 2 A in the middle is an enlarged structural diagram;

[0020] Figure 4 This is a schematic diagram of the positioning inner shell structure of a feeding device for a tape casting machine disclosed in a preferred embodiment of the present application;

[0021] Explanation of the numbers in the figure: 1. Extrusion shell; 11. Arc shell; 111. First spiral groove; 112. First limit strip; 113. Seal; 12. Extrusion head; 2. Positioning inner shell; 21. Second limit strip; 22. Heating plate; 23. Insulation plate; 24. Sealing groove; 25. Arc groove; 251. Second spiral groove; 252. Rectangular through groove; 3. Particle feeding mechanism; 31. Hopper; 32. Snap ring; 321. Connecting plate; 33. Feed pipe; 331. Ball valve seat; 34. Transmission rod; 4. Drive motor; 5. Extrusion mechanism; 51. Screw; 52. Rotating shaft; 53. Gear; 6. Belt mechanism; 7. L-shaped mounting seat. DETAILED DESCRIPTION

[0022] The present application is further described in detail below with reference to the accompanying drawings.

[0023] Reference Figures 1 to 4 , an embodiment of the present application provides a feeding device for a tape casting machine, characterized in that it comprises: an extrusion outer shell 1 and a positioning inner shell 2, the extrusion outer shell 1 includes an extrusion head 12, the extrusion head 12 is fixedly connected to two arc-shaped shells 11, the inner arc surface of the arc-shaped shell 11 is provided with a first spiral groove 111, the arc-shaped shell 11 is threadedly connected to the positioning inner shell 2 through a threaded structure, arc grooves 25 are provided on both sides of the positioning inner shell 2, a rectangular through groove 252 is provided in the positioning inner shell 2, a second spiral groove 251 is provided along the inner arc surface of the arc groove 25, a particle feeding mechanism 3 is connected to the positioning inner shell 2, an extrusion mechanism 5 is installed between the extrusion outer shell 1 and the positioning inner shell 2, and a heating plate 22 and a heat insulation plate 23 are fixedly installed at the bottom end of the positioning inner shell 2;

[0024] The particle feeding mechanism 3 includes a hopper 31, and the hopper 31 is fixedly connected to a feeding pipe 33. The feeding pipe 33 is provided with a ball valve seat 331. A transmission rod 34 is rotatably mounted on the ball valve seat 331. The transmission rod 34 is located in the ball valve seat 331 and is fixedly connected to a ball head. The bottom end of the feeding pipe 33 is fixedly connected to the positioning inner shell 2.

[0025] The extrusion mechanism 5 includes two screws 51, which are rotatably arranged in the arc groove 25, and the screws 51 are meshed with each other. A rotating shaft 52 is fixedly provided at one end of the screw 51 near the hopper 31. The rotating shaft 52 movably passes through the positioning inner shell 2 and is fixedly connected with a gear 53. The two gears 53 are meshed with each other. A belt mechanism 6 is connected between the transmission rod 34 and a rotating shaft 52. The heat insulation plate 23 is fixedly connected with an L-shaped mounting seat 7. A drive motor 4 is detachably limited and installed on the L-shaped mounting seat 7. The output shaft of the drive motor 4 is connected to a rotating shaft 52 for transmission. The transmission rod 34 and the rotating shaft 52 are both rotatably connected to the L-shaped mounting seat 7.

[0026] By adopting the above technical solution, the feeding device is used for the melt feeding processing of the plastic granule raw material of the casting machine. The melting structure is composed of an extrusion outer shell 1, a positioning inner shell 2 and two screws 51. The extrusion outer shell 1 and the positioning inner shell 2 are fixed with threads. The two screws 51 are meshed and installed in the circular channel formed between the extrusion outer shell 1 and the positioning inner shell 2, and the inner walls of the extrusion outer shell 1 and the positioning inner shell 2 are provided with grooves of spiral structure, which can realize the meshing connection effect of the screw 51. The tightly meshed twin-screw 51 extrusion structure can obtain a high degree of positive displacement conveying characteristics, improve the melting performance and conveying capacity, and achieve the purpose of stable and continuous melting feeding. By adding plastic granules in the hopper 31, when the drive motor 4 drives the connected shaft 52 to rotate, the belt Mechanism 6 rotates the transmission rod 34 and rotates the ball head in the ball valve seat 331, so that the plastic particles in the hopper 31 can be intermittently dropped between the screws 51, and a heating plate 22 is installed at the bottom end of the positioning inner shell 2, which can conduct heat to the screw 51 to heat and melt the plastic particles. The two screws 51 use the meshing gears 53 to achieve synchronous reverse rotation, so that the heated and molten molten material can be extruded by the extruder head 12 and fed to the casting machine for processing. The feeding device can realize uniform, quantitative and continuous feeding of plastic particles to the twin-screw 51 extrusion structure, and combined with the twin-screw 51 to continuously and stably extrude the plastic molten material to the casting machine equipment, the extrusion outer shell 1 and the positioning inner shell 2 can be assembled and connected, which is convenient for regular maintenance operations on the twin-screw 51 extrusion structure.

[0027] Reference Figures 2 to 4 Two first limiting strips 112 are fixed on the arc-shaped shell 11, and second limiting strips 21 are fixed at the four corners of the positioning inner shell 2. The first limiting strips 112 are respectively threadedly connected to the corresponding second limiting strips 21 with multiple bolts.

[0028] By adopting the above technical solution, the connection surface of the extruded outer shell 1 and the positioning inner shell 2 is threadedly fixed with the two first limiting strips 112 and the corresponding second limiting strips 21 using bolts, thereby realizing the assembled connection processing of the extruded outer shell 1 and the positioning inner shell 2.

[0029] Reference Figure 2 and Figure 3 Two seals 113 are detachably mounted on the arc-shaped shell 11 , and sealing grooves 24 are provided on both side surfaces of the positioning inner shell 2 , and the seals 113 are embedded in the corresponding sealing grooves 24 .

[0030] By adopting the above technical solution, the connection surface between the extruded outer shell 1 and the positioning inner shell 2 can be sealed by the seal 113, which can reduce the loss of internal heat energy.

[0031] Reference Figure 2 and Figure 4 The arc grooves 25 on both sides of the positioning inner shell 2 are connected through a rectangular through groove 252, the meshing connection part of the screw 51 is provided at the rectangular through groove 252, and the bottom end of the feeding pipe 33 is connected to the rectangular through groove 252.

[0032] By adopting the above technical solution, the plastic particles in the hopper 31 are uniformly and quantitatively fed through the feeding pipe 33 between the two screws 51, that is, at the rectangular through groove 252, and can be extruded and melted by the heated screw 51.

[0033] Reference Figures 2 to 4 The heat insulation plate 23 is arranged at the bottom of the heating plate 22, and the heat insulation plate 23 is larger than the heating plate 22.

[0034] By adopting the above technical solution, the heating plate 22 is encapsulated inside the positioning inner shell 2 using the heat insulation plate 23 , so that the heat of the heating plate 22 can be transferred to the heating screw 51 for processing.

[0035] Reference Figure 1 and Figure 2 A clamping ring 32 is fixedly sleeved on the outside of the hopper 31 , and a connecting plate 321 is fixedly connected between the clamping ring 32 and the L-shaped mounting seat 7 .

[0036] By adopting the above technical solution, the hopper 31 is fixedly mounted on the L-shaped mounting seat 7 by means of the clamping ring 32 and the connecting plate 321 , so that the transmission rod 34 can rotate stably.

[0037] Reference Figure 1 and Figure 2 The ball head in the ball valve seat 331 is provided with a through-hole structure, and the ball head in the ball valve seat 331 is connected to the hopper 31 and the feed pipe 33 through the through-hole structure.

[0038] By adopting the above technical solution, when the transmission rod 34 drives the ball head in the ball valve seat 331 to rotate, the through hole of the ball head intermittently connects the material delivery pipe 33, and then the plastic particles in the hopper 31 are intermittently and quantitatively delivered to the screw 51.

[0039] Working principle: The feeding device is used for the melting feeding of plastic granule raw materials of the casting machine. The melting structure consists of an extrusion shell 1, a positioning inner shell 2 and two screws 51. The extrusion shell 1 and the positioning inner shell 2 are fixed with threads. The two screws 51 are meshed and installed in the circular channel formed between the extrusion shell 1 and the positioning inner shell 2. The inner walls of the extrusion shell 1 and the positioning inner shell 2 are both provided with grooves of spiral structure, which can realize the meshing connection effect of the screws 51. By adding plastic granules into the hopper 31, when the drive motor 4 drives the connected shaft 52 to rotate, the belt mechanism 6 is used to rotate the transmission rod 34, so that the ball head in the ball valve seat 331 rotates, which can make the hopper 31 The inner plastic particles intermittently fall between the screws 51, and a heating plate 22 is installed at the bottom end of the positioning inner shell 2, which can conduct heat to the screw 51 to heat and melt the plastic particles. The two screws 51 use the meshing gears 53 to achieve synchronous reverse rotation, and the heated and molten molten material can be extruded by the extruder head 12 and fed to the casting machine for processing. The feeding device can realize uniform, quantitative and continuous feeding of plastic particles to the twin-screw 51 extrusion structure, and combined with the twin-screw 51 to continuously and stably extrude the plastic molten material to the casting machine equipment, the extrusion outer shell 1 and the positioning inner shell 2 can be assembled and connected, which is convenient for regular maintenance operations on the twin-screw 51 extrusion structure.

Claims

1. A feeding device for a tape casting machine, characterized in that: The invention comprises an extrusion shell (1) and a positioning inner shell (2), wherein the extrusion shell (1) comprises an extrusion head (12), the extrusion head (12) is fixedly connected to two arc-shaped shells (11), the inner arc surface of the arc-shaped shell (11) is provided with a first spiral groove (111), the arc-shaped shell (11) and the positioning inner shell (2) are threadedly connected via a threaded structure, both sides of the positioning inner shell (2) are provided with arc-shaped grooves (25), a rectangular through groove (252) is provided in the positioning inner shell (2), a second spiral groove (251) is provided along the inner arc surface of the arc-shaped groove (25), a particle feeding mechanism (3) is connected to the positioning inner shell (2), an extrusion mechanism (5) is installed between the extrusion shell (1) and the positioning inner shell (2), and a heating plate (22) and a heat insulation plate (23) are fixedly installed at the bottom end of the positioning inner shell (2); The particle feeding mechanism (3) includes a hopper (31), the hopper (31) is fixedly connected to a delivery pipe (33), a ball valve seat (331) is provided on the delivery pipe (33), a transmission rod (34) is rotatably mounted on the ball valve seat (331), and the transmission rod (34) is located in the ball valve seat (331) and is fixedly connected to a ball head, and the bottom end of the delivery pipe (33) is fixedly connected to the positioning inner shell (2); The extrusion mechanism (5) includes two screws (51), the screws (51) are rotatably arranged in the arc groove (25), the screws (51) are meshed with each other, and a rotating shaft (52) is fixedly provided at one end of the screw (51) close to the hopper (31), the rotating shaft (52) movably penetrates the positioning inner shell (2) and is fixedly connected with a gear (53), the two gears (53) are meshed with each other, a belt mechanism (6) is connected between the transmission rod (34) and a rotating shaft (52), the heat insulation plate (23) is fixedly connected with an L-shaped mounting seat (7), a driving motor (4) is detachably limited and installed on the L-shaped mounting seat (7), the output shaft of the driving motor (4) is connected with a rotating shaft (52), and the transmission rod (34) and the rotating shaft (52) are both rotatably connected with the L-shaped mounting seat (7).

2. The feeding device for a tape casting machine according to claim 1, characterized in that: Two first limiting strips (112) are fixedly provided on the arc-shaped shell (11), and second limiting strips (21) are fixedly provided at the four corners of the positioning inner shell (2). The first limiting strips (112) are respectively threadedly connected to the corresponding second limiting strips (21) by a plurality of bolts.

3. The feeding device for a tape casting machine according to claim 1, characterized in that: Two seals (113) are detachably mounted on the arc-shaped shell (11), and sealing grooves (24) are provided on both side surfaces of the positioning inner shell (2), and the seals (113) are embedded in the corresponding sealing grooves (24).

4. The feeding device for a tape casting machine according to claim 1, characterized in that: The arc grooves (25) on both sides of the positioning inner shell (2) are connected through a rectangular through groove (252), the meshing connection part of the screw (51) is arranged at the rectangular through groove (252), and the bottom end of the feeding pipe (33) is connected to the rectangular through groove (252).

5. The feeding device for a tape casting machine according to claim 1, characterized in that: The heat insulation plate (23) is arranged at the bottom of the heating plate (22), and the heat insulation plate (23) is arranged larger than the heating plate (22).

6. The feeding device for a tape casting machine according to claim 1, characterized in that: A clamping ring (32) is fixedly sleeved on the outside of the hopper (31), and a connecting plate (321) is fixedly connected between the clamping ring (32) and the L-shaped mounting seat (7).

7. The feeding device for a tape casting machine according to claim 1, characterized in that: The ball head in the ball valve seat (331) is provided with a through-hole structure, and the ball head in the ball valve seat (331) is connected to the hopper (31) and the material delivery pipe (33) through the through-hole structure.

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