Film blowing device with melt pump

Abstract

The utility model discloses a blown film device with a melt pump. The blown film device comprises an operation table, and an extrusion assembly and a melt pump assembly are sequentially arranged on the operation table from left to right. One side of the lower end of the machine body is connected with a motor; the upper end of the machine body communicates with a conveying body, the conveying body is in a hollow cylinder shape, one end, close to the machine body, of the conveying body communicates with a feeding assembly, and the feeding assembly comprises an outer cylinder close to the upper end and a guide bin close to the lower end; a quantitative discharging assembly is arranged in the outer cylinder. The melt pump is additionally arranged at the extrusion end and can play a role in increasing, so that extrusion is uniform, the thickness of a film is uniform, and the quality of a finished product is improved; and the quantitative discharging assembly is arranged in the feeding assembly, the single-time discharging amount can be the same, discharging is conducted at intervals, and the amount is convenient to control.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film processing, in particular to a film blowing device with a melt pump. Background Art

[0002] Plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, used for packaging and as a coating layer. Plastic packaging and plastic packaging products occupy an increasingly large share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields.

[0003] Blow molding is the most common way of processing plastic films. Almost all thermoplastic materials can be made into film products through blow molding. However, the blow molding method has problems such as unstable operation of the extruder, difficult pressure adjustment, and poor uniformity of the film products. There is still room for improvement. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the above-mentioned prior art and provides a film blowing device with a melt pump.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: a film blowing device with a melt pump comprises an operating table, on which an extrusion assembly and a melt pump assembly are arranged in sequence from left to right; the extrusion assembly comprises a machine body, and a motor is connected to one side of the lower end of the machine body; a conveying body is connected to the upper end of the machine body, and the conveying body is a hollow cylindrical body, and a feeding assembly is connected to the upper end of the conveying body close to the machine body, and the feeding assembly comprises an outer cylinder close to the upper end and a material guide bin close to the lower end; a quantitative feeding assembly is arranged in the outer cylinder, and the quantitative feeding assembly comprises a feeding A material inlet, a control component is provided at the upper end of the outer cylinder and near the right side; an inner cylinder is provided in the outer cylinder, a spring is provided at the lower end of the inner cylinder, the upper ends of the springs are commonly connected with a metering cylinder, and the lower end of the metering cylinder is provided with a discharge pipe extending into the material guide bin; a plurality of guide holes are provided around the upper edge of the inner cylinder, a plurality of guide holes 2 are provided around the upper edge of the metering cylinder, and the guide holes 2 correspond to the guide holes in the initial state; the melt pump assembly includes a support frame, a motor 2 is provided at the lower end of the support frame, a reducer is connected to the output end of the motor 2, a plurality of universal ball valves are provided at the output end of the reducer, and a gear pump is connected to the upper end of the universal ball valve.

[0006] As an improvement, supporting feet are provided at the four corners below the operating table, and reinforcing supports are provided between adjacent supporting feet and near the middle and lower ends.

[0007] As an improvement, a mounting plate is provided under the machine body, and the mounting plate is bolted to the operating table via a plurality of bolts.

[0008] As an improvement, the material guide bin is in the shape of a hollow inverted cone, and a through hole communicating with the conveying body is provided at the lower end.

[0009] As an improvement, the control component includes a touch switch provided at the upper end of the outer tube, a slide groove is provided on the inner side of the outer tube, a floating plate is slidably provided in the slide groove, and a pressing block is provided at the end of the floating plate extending out of the slide groove.

[0010] As an improvement, the second guide hole and the guide hole are both inclined upward from inside to outside.

[0011] As an improvement, one end of the melt pump assembly is connected to the transmission body through a coupling, and the other end is connected to a die head.

[0012] Compared with the prior art, the utility model has the following advantages: adding a melt pump at the extrusion end can play an increasing role, making the extrusion uniform, the film thickness uniform, and improving the quality of the finished product;

[0013] A quantitative feeding component is provided inside the feeding component, which can make the single feeding amount the same and feed at intervals for easy quantity control. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of a quantitative feeding component of the utility model.

[0016] Figure 3 It is a schematic diagram of the structure of the melt pump of the utility model.

[0017] As shown in the figure: 1. Operating table, 2. Support feet, 3. Reinforcement support, 4. Machine body, 5. Motor, 6. Mounting plate, 7. Conveyor body, 8. Outer cylinder, 9. Material guide bin, 10. Feed inlet, 11. Inner cylinder, 12. Spring, 13. Measuring cylinder, 14. Touch switch, 15. Slide, 16. Floating plate, 17. Press block, 18. Discharge pipe, 19. Guide hole, 20. Guide hole 2, 21. Support frame, 22. Motor 2, 23. Reducer, 24. Universal ball valve, 25. Gear pump, 26. Machine head mold. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] Embodiment 1, in combination with the attached Figure 1 A film blowing device with a melt pump comprises an operating table 1, wherein legs 2 are arranged at the four corners below the operating table 1, and reinforcing supports 3 are arranged between adjacent legs 2 and near the middle and lower ends to increase the overall stability; an extrusion assembly and a melt pump assembly are arranged on the operating table 1 from left to right.

[0020] Combined with Figure 1 The extrusion assembly includes a body 4, a mounting plate 6 is provided under the body 4, and the mounting plate 6 is bolted to the operating table 1 through multiple bolts to increase the overall stability of the extrusion assembly; a motor 5 is connected to one side of the lower end of the body 4; a conveying body 7 is connected to the upper end of the body 4, and the conveying body 7 is a hollow cylinder. A feeding assembly is connected to the upper end of the conveying body 7 close to the body 4.

[0021] Combined with Figure 1 , 2 The feeding assembly includes an outer cylinder 8 near the upper end and a guide bin 9 near the lower end. The guide bin 9 is a hollow inverted cone, and a through hole communicating with the conveying body 7 is provided at the lower end to facilitate feeding into the conveying body 7; a quantitative feeding assembly is provided in the outer cylinder 8, and the quantitative feeding assembly includes a feeding port 10 provided at the upper end of the outer cylinder 8 and near the left side, and a control assembly is provided at the upper end of the outer cylinder 8 and near the right side. The control assembly includes a touch switch 14 provided at the upper end of the outer cylinder 8, a slide groove 15 is provided on the inner side of the outer cylinder 8, and a floating plate 16 is provided in the slide groove 15 for sliding. A pressing block 17 is provided at the end of the floating plate 16 extending out of the slide groove 15, and a pressing block 17 is provided through the pressing block 17 and the touch switch The contact and disconnection of the switch 14 controls the feeding and stopping in the outer cylinder 8; an inner cylinder 11 is arranged in the outer cylinder 8, a spring 12 is arranged at the lower end of the inner cylinder 11, and a quantitative cylinder 13 is connected to the upper end of the spring 12, and a discharge pipe 18 extending into the guide bin 9 is arranged at the lower end of the quantitative cylinder 13; a plurality of guide holes 19 are arranged on the circumference of the upper edge of the inner cylinder 11, and a plurality of guide holes 20 are arranged on the circumference of the upper edge of the quantitative cylinder 13. In the initial state, the guide holes 20 correspond to the guide holes 19, and the guide holes 20 and the guide holes 19 are inclined upward from the inside to the outside, so that the raw materials can enter the quantitative cylinder 13 from the outer cylinder 8 through the corresponding guide holes 19 and the guide holes 20.

[0022] Combined with Figure 1 , 3 One end of the melt pump assembly is connected to the conveyor 7, and the other end is connected to a head die 26, which is connected between the extrusion assembly and the head die 26, does not affect the passage of the raw materials, and can play a pressurizing role; the melt pump assembly includes a support frame 21, a motor 22 is provided at the lower end of the support frame 21, a reducer 23 is connected to the output end of the motor 22, a plurality of universal ball valves 24 are provided at the output end of the reducer 23, and a gear pump 25 is connected to the upper end of the universal ball valve 24.

[0023] The working principle of the utility model is as follows: when in use, extrusion is performed under high temperature through the extruder, and the melt pump can help to increase the pressure to stabilize the film state; when feeding, the raw material enters the outer cylinder 8 through the feed port 10, the amount of raw material increases, and the liquid level rises with the float plate 16 until the pressing block 17 contacts the touch switch 14, and the feeding is stopped through the external control panel. At this time, the raw material enters the metering cylinder 13 from the corresponding guide hole 19 and the second guide hole 20, and the gradually increased weight of the metering cylinder 13 causes the spring 12 to deform, and the metering cylinder 13 moves downward until the guide hole 19 and the second guide hole 20 no longer correspond, thereby stopping the feeding. At this time, the raw material is allowed to enter the guide bin 9 from the discharge pipe 18 through the external controller, and enter the conveying body 7 to complete a single fixed amount of feeding; the raw material is fed at intervals and the feeding amount is controllable.

[0024] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A film blowing device with a melt pump, characterized in that: The invention comprises an operating table (1), on which an extrusion assembly and a melt pump assembly are arranged in sequence from left to right; the extrusion assembly comprises a machine body (4), on one side of the lower end of the machine body (4) a motor (5) is connected; the upper end of the machine body (4) is connected to a conveyor body (7), the conveyor body (7) is a hollow cylindrical shape, and the upper end of the conveyor body (7) close to the machine body (4) is connected to a feed assembly, the feed assembly comprises an outer cylinder (8) close to the upper end and a guide bin (9) close to the lower end; a quantitative unloading assembly is arranged inside the outer cylinder (8), the quantitative unloading assembly comprises a feed port (10) arranged at the upper end and close to the left side of the outer cylinder (8), and a control assembly is arranged at the upper end and close to the right side of the outer cylinder (8); an inner cylinder (11) is arranged inside the outer cylinder (8), and the A spring (12) is provided at the lower end of the inner cylinder (11), and a metering cylinder (13) is connected to the upper end of the spring (12), and a discharge pipe (18) extending into the material guide bin (9) is provided at the lower end of the metering cylinder (13); a plurality of flow guide holes (19) are provided on the upper circumference of the inner cylinder (11), and a plurality of flow guide holes (20) are provided on the upper circumference of the metering cylinder (13), and in an initial state, the flow guide holes (20) correspond to the flow guide holes (19); the melt pump assembly comprises a support frame (21), a motor (22) is provided at the lower end of the support frame (21), a reducer (23) is connected to the output end of the motor (22), a plurality of universal ball valves (24) are provided at the output end of the reducer (23), and a gear pump (25) is connected to the upper end of the universal ball valve (24).

2. The film blowing device with a melt pump according to claim 1, characterized in that: Support legs (2) are provided at the four corners below the operating table (1), and reinforcing braces (3) are provided between adjacent support legs (2) and near the middle and lower ends.

3. The film blowing device with a melt pump according to claim 1, characterized in that: A mounting plate (6) is provided below the machine body (4), and the mounting plate (6) is bolted to the operating platform (1) via a plurality of bolts.

4. The film blowing device with a melt pump according to claim 1, characterized in that: The material guide bin (9) is in the shape of a hollow inverted cone, and a through hole communicating with the conveying body (7) is provided at the lower end.

5. The film blowing device with a melt pump according to claim 1, characterized in that: The control component comprises a touch switch (14) provided at the upper end of an outer tube (8), a slide groove (15) provided on the inner side of the outer tube (8), a floating plate (16) slidingly provided in the slide groove (15), and a pressing block (17) provided at the end of the floating plate (16) extending out of the slide groove (15).

6. The film blowing device with a melt pump according to claim 1, characterized in that: The second guide hole (20) and the guide hole (19) are both inclined upward from the inside to the outside.

7. The film blowing device with a melt pump according to claim 1, characterized in that: One end of the melt pump assembly is connected to the transmission body (7) through a coupling, and the other end is connected to a die head mold (26).

Images