A feeding device of a plastic film extruder

Abstract

The utility model relates to the technical field of plastic film extruder feeding, disclose a kind of feeding device of plastic film extruder, including fixed backing plate, extruder body and screw feeder, the hopper is provided on the extruder body, the top of the fixed backing plate and the side close to the extruder body are fixed with feeding assembly by support;The feeding assembly includes temporary storage bin one and temporary storage bin two, the bottom between the temporary storage bin one and temporary storage bin two is provided with the downpipe that plastic film raw material is sent into the hopper, the raw material in temporary storage bin one can be rapidly switched and use temporary storage bin two to feed into the hopper after using up, so that the feeding of hopper can be realized continuously, so as to avoid the raw material supply interruption of extruder body, can ensure that extruder body carries out continuous production operation.

Description

Technical Field

[0001] This utility model relates to the field of feeding technology for plastic film extruders, specifically a feeding device for a plastic film extruder. Background Technology

[0002] A plastic film extruder is a specialized piece of equipment used to produce plastic films, belonging to the category of plastic extrusion molding machinery. Its core function is to use the pressure and shear force generated by the rotation of the screw to melt thermoplastic plastic and continuously extrude it into a film.

[0003] A search revealed that patent CN221756788U describes: "A feeding device for a plastic film extruder, comprising an extruder body, a base on the rear side of the extruder body, two feeding mechanisms for feeding material on the upper part of the base, a discharge pipe installed on one side of the two storage tanks, a sealing plate on one side of the discharge pipe, a connecting rod fixedly connected to the bottom end of the sealing plate, a second spring sleeved on the lower end of the connecting rod, the upper and lower ends of the second spring respectively connected to the lower part of the fixed plate and the upper part of the connecting plate, a feeding mechanism for pouring plastic raw materials into the receiving hopper is provided above the connecting plate, a motor drives a reciprocating screw to rotate, causing a moving plate to move the receiving hopper up and down, when the moving plate moves down, it presses the connecting plate, completing the opening and closing of the storage tanks, achieving the effect of automatic feeding, thereby reducing the workload of the workers."

[0004] Based on the search of the aforementioned patents, we found that the solution still has certain defects in its implementation. Since the raw material of the plastic film is transported to the receiving hopper of the extruder body through the receiving trough, during operation, the receiving trough needs to continuously perform the operation of feeding material at the rising height and replenishing material at the falling height. During the process of replenishing material at the falling height, due to the time difference, the receiving hopper will run out of raw material, resulting in the interruption of the raw material supply to the extruder body. This will affect the normal operation of the extruder body and is not conducive to the continuous production operation of the extruder body. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a feeding device for a plastic film extruder, comprising a fixed pad, an extruder body, and a screw feeder. The extruder body is provided with a feed hopper. A feeding assembly is fixed to the top of the fixed pad, near the extruder body, via a bracket. The feeding assembly includes a first temporary storage bin and a second temporary storage bin. A discharge pipe for feeding plastic film raw materials into the feed hopper is provided between the bottoms of the first and second temporary storage bins. A replenishment pipe for feeding plastic film raw materials into the first and second temporary storage bins is connected to the top of the screw feeder. A drive assembly for driving the replenishment pipe in a specific direction is installed on the top of the first temporary storage bin.

[0007] As a further embodiment of this utility model: both the first and second temporary storage compartments are provided with transparent windows on their sides, and a guide plate is fixed at the top between the first and second temporary storage compartments, with both sides of the guide plate inclined inwards towards the interior of the first and second temporary storage compartments respectively.

[0008] As a further embodiment of this utility model: the feeding pipe includes a U-shaped pipe and a feeding pipe, the two ends of the U-shaped pipe are respectively connected to the bottom of temporary storage bin one and temporary storage bin two, the feeding pipe is inclined and one end is connected to the bottom of the U-shaped pipe, and the other end is located above the feeding hopper.

[0009] As a further embodiment of this utility model: unloading valve one and unloading valve two are respectively installed on the two ends of the U-shaped tube. Unloading valve one is located below temporary storage bin one and cooperates with temporary storage bin one. Unloading valve two is located below temporary storage bin two and cooperates with temporary storage bin two.

[0010] As a further embodiment of this utility model: the feeding pipe is designed to be inclined and includes a fixed pipe, a corrugated pipe and a movable pipe. One end of the fixed pipe is connected to the discharge port of the screw feeder and the other end is fixedly connected to the corrugated pipe. The other end of the corrugated pipe is fixedly connected to the movable pipe. The end of the movable pipe away from the corrugated pipe is located above the feeding assembly.

[0011] As a further embodiment of this utility model: the drive assembly includes a fixed plate and an electric telescopic rod, the electric telescopic rod is mounted on the fixed plate, and the power output shaft of the electric telescopic rod is fixed to the side of the movable tube.

[0012] As a further embodiment of this utility model: the screw feeder is installed on the top of the fixed pad and located on one side of the feeding assembly. The bottom side of the screw feeder is provided with a feed inlet. A storage bin is also fixed on the top of the fixed pad and located on one side of the screw feeder. The bottom of the storage bin near the screw feeder is connected to the feed inlet of the extruder body through a guide pipe, and the guide pipe is designed to be inclined.

[0013] As a further embodiment of this utility model: material level sensors are installed on the inner walls of both the first and second temporary storage bins near their bottoms; audible and visual alarms are installed on the tops of both the first and second temporary storage bins; and a controller is also installed between the first and second temporary storage bins.

[0014] As a further embodiment of this utility model: the level sensor in the first temporary storage bin is connected to the audible and visual alarm on the first temporary storage bin via a controller electrical signal, and the level sensor in the second temporary storage bin is connected to the audible and visual alarm on the second temporary storage bin via a controller electrical signal.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this application, through the design of the feeding assembly, drive assembly, feeding pipe and unloading pipe, etc., the plastic raw materials can be temporarily stored in temporary storage bin one and temporary storage bin two respectively, and transported to the feed hopper through the unloading pipe. When the raw materials in temporary storage bin one are about to be used up, temporary storage bin two can be quickly switched to feed the feed hopper, so as to achieve continuous feeding of the feed hopper, thereby avoiding the situation of raw material interruption of the extruder body and ensuring continuous production operation of the extruder body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 This is a magnified three-dimensional structural schematic diagram of a portion of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the material feeding pipe of this utility model;

[0020] Figure 4 This is a partial side sectional view of the present invention.

[0021] The reference numerals and names in the figure are as follows:

[0022] 1. Fixed pad; 2. Extruder body; 3. Feed hopper; 4. Screw feeder; 5. Storage bin; 6. Feeding assembly; 601. Guide plate; 602. Temporary storage bin one; 603. Temporary storage bin two; 604. Transparent window; 7. Drive assembly; 701. Fixed plate; 702. Electric telescopic rod; 8. Feeding pipe; 801. Fixed pipe; 802. Corrugated pipe; 803. Movable pipe; 9. Discharge pipe; 901. U-shaped pipe; 902. Discharge pipe; 10. Discharge valve one; 11. Discharge valve two; 12. Material level sensor; 13. Audible and visual alarm; 14. Controller. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 A feeding device for a plastic film extruder includes a fixed pad 1, an extruder body 2, and a screw feeder 4. The extruder body 2 is provided with a feed hopper 3. A feeding assembly 6 is fixed to the top of the fixed pad 1 and the side closest to the extruder body 2 by a bracket. The feeding assembly 6 includes a first temporary storage bin 602 and a second temporary storage bin 603. A discharge pipe 9 for feeding plastic film raw materials into the feed hopper 3 is provided between the bottoms of the first temporary storage bin 602 and the second temporary storage bin 603. A replenishing pipe 8 for feeding plastic film raw materials into the first temporary storage bin 602 and the second temporary storage bin 603 is connected to the top side of the screw feeder 4. A drive assembly 7 for driving the replenishing pipe 8 to change direction is installed on the top of the first temporary storage bin 602.

[0025] Please see Figure 1 , Figure 2 and Figure 4 In this embodiment, both the side of temporary storage compartment 1 602 and temporary storage compartment 2 603 are provided with transparent windows 604, and a guide plate 601 is fixed at the top between temporary storage compartment 1 602 and temporary storage compartment 2 603. The two sides of the guide plate 601 are inclined toward the interior of temporary storage compartment 1 602 and temporary storage compartment 2 603 respectively.

[0026] Specifically, by providing transparent windows 604 on the sides of temporary storage bin 1 602 and temporary storage bin 2 603, staff can easily observe the condition of the raw materials inside the temporary storage bin 1 602 and temporary storage bin 2 603. By providing guide plates 601 between them, the raw materials falling from the movable tube 803 can be smoothly guided when the movable tube 803 passes over the guide plate 601, preventing them from staying or accumulating between the two.

[0027] Please see Figure 2 , Figure 3 and Figure 4In this embodiment, the discharge pipe 9 includes a U-shaped pipe 901 and a discharge pipe 902. The two ends of the U-shaped pipe 901 are respectively connected to the bottom of the first temporary storage bin 602 and the second temporary storage bin 603. The discharge pipe 902 is inclined and one end is connected to the bottom of the U-shaped pipe 901, and the other end is located above the feed hopper 3. The two ends of the U-shaped pipe 901 are respectively equipped with a discharge valve 10 and a discharge valve 11. The discharge valve 10 is located below the first temporary storage bin 602 and cooperates with the first temporary storage bin 602. The discharge valve 11 is located below the second temporary storage bin 603 and cooperates with the second temporary storage bin 603.

[0028] Specifically, the U-shaped pipe 901 can simultaneously connect temporary storage bin 1 602 and temporary storage bin 2 603, thereby facilitating the entry of raw materials from temporary storage bin 1 602 and temporary storage bin 2 603 into the U-shaped pipe 901. With the cooperation of discharge valve 10 and discharge valve 21 on the U-shaped pipe 901, one end or the other end of the U-shaped pipe 901 can be connected to the feed pipe 902, thereby enabling the raw materials from temporary storage bin 1 602 and temporary storage bin 2 603 to be fed separately into the feed pipe 902. The coordinated use of temporary storage bin 1 602 and temporary storage bin 2 603 ensures a continuous supply of materials to the feed hopper 3.

[0029] Please see Figure 1 and Figure 2 In this embodiment, the feeding pipe 8 is designed to be inclined and includes a fixed pipe 801, a corrugated pipe 802 and a movable pipe 803. One end of the fixed pipe 801 is connected to the discharge port of the screw feeder 4 and the other end is fixedly connected to the corrugated pipe 802. The other end of the corrugated pipe 802 is fixedly connected to the movable pipe 803. The end of the movable pipe 803 away from the corrugated pipe 802 is located above the feeding assembly 6. The drive assembly 7 includes a fixed plate 701 and an electric telescopic rod 702. The electric telescopic rod 702 is mounted on the fixed plate 701 and the power output shaft of the electric telescopic rod 702 is fixed to the side of the movable pipe 803.

[0030] Specifically, by activating the electric telescopic rod 702, its power output shaft can drive the movable tube 803 to move. Under the deformation of the corrugated tube 802, it moves towards the first temporary storage bin 602 and the second temporary storage bin 603 respectively, which can facilitate the replenishment of raw materials from the screw feeder 4 to the first temporary storage bin 602 or the second temporary storage bin 603, ensuring that the raw materials in the first temporary storage bin 602 and the second temporary storage bin 603 are sufficient.

[0031] Please see Figure 1 , Figure 2 and Figure 4In this embodiment, the screw feeder 4 is installed on the top of the fixed pad 1 and located on one side of the feeding assembly 6. The bottom side of the screw feeder 4 is provided with a feed inlet. The top of the fixed pad 1 and the position on one side of the screw feeder 4 are also fixed with a storage bin 5. The bottom of the storage bin 5 near the screw feeder 4 is connected to the feed inlet of the extruder body 2 through a guide pipe, and the guide pipe is designed to be inclined.

[0032] Specifically, the storage bin 5 can store more plastic film raw materials. The raw materials in the storage bin 5 can be lifted by the screw feeder 4 and then enter the fixed pipe 801, and can be easily discharged from the movable pipe 803.

[0033] Please refer to the figure. Figure 2 and Figure 4 In this embodiment, level sensors 12 are installed on the inner walls and near the bottom of both temporary storage bin 1 602 and temporary storage bin 2 603. Audible and visual alarms 13 are installed on the top of both temporary storage bin 1 602 and temporary storage bin 2 603. A controller 14 is also installed between temporary storage bin 1 602 and temporary storage bin 2 603. The level sensors 12 in temporary storage bin 1 602 and the audible and visual alarms 13 on temporary storage bin 1 602 are connected by electrical signals through the controller 14. The level sensors 12 in temporary storage bin 2 603 and the audible and visual alarms 13 on temporary storage bin 2 603 are also connected by electrical signals through the controller 14.

[0034] Specifically, when the material level in temporary storage bin 1 602 or temporary storage bin 2 603 drops, it can be detected by the material level sensor 12 inside temporary storage bin 1 602 or temporary storage bin 2 603. This will trigger an audible and visual alarm 13 installed on temporary storage bin 1 602 or temporary storage bin 2 603, thereby reminding the staff and facilitating the staff to activate the electric telescopic rod 702 to move the movable tube 803 and change its orientation, thereby enabling the replenishment of material into temporary storage bin 1 602 or temporary storage bin 2 603.

[0035] When using:

[0036] By opening the discharge valve 10 and closing the discharge valve 21, the raw material in the temporary storage bin 602 can enter the feed hopper 3 through the discharge pipe 9 and then enter the extruder body 2 to facilitate the operation of the extruder body 2.

[0037] When the raw material in temporary storage bin 602 is continuously discharged and the material level is detected by the material level sensor 12 in temporary storage bin 602, the material level sensor 12 sends a signal to the controller 14, and the controller 14 activates the audible and visual alarm 13 on temporary storage bin 602 to remind the staff that the raw material in temporary storage bin 602 is about to be discharged and that temporary storage bin 602 needs to be replenished.

[0038] Then, the screw feeder 4 is started. The screw feeder 4 can transport the plastic raw material in the storage bin 5 to the replenishment pipe 8, and discharge it to the temporary storage bin 602 through the movable pipe 803. When replenishing raw material in the temporary storage bin 602, the discharge valve 11 can be opened and the discharge valve 10 can be closed. Thus, when replenishing raw material in the temporary storage bin 602, the raw material in the temporary storage bin 603 can be sent to the feed hopper 3 through the discharge pipe 9, thereby achieving continuous feeding of the feed hopper 3 and continuous feeding of the extruder body 2, avoiding the interruption of the raw material supply to the extruder body 2.

[0039] Similarly, when the raw materials in temporary storage bin 2 603 are about to be discharged, the material level sensor 12 in temporary storage bin 2 603 will detect this and send a signal to the controller 14. The controller 14 will then activate the audible and visual alarm 13 on temporary storage bin 2 603 to remind the staff to replenish the material in temporary storage bin 2 603. Then, the discharge valve 10 can be opened and the discharge valve 2 11 can be closed to replenish the material in temporary storage bin 2 603, and the material will be discharged again through temporary storage bin 1 602.

[0040] When the extruder body 2 is replenishing material to temporary storage bin 1 602 or temporary storage bin 2 603, the operator can activate the electric telescopic rod 702. The movement of the power output shaft of the electric telescopic rod 702 drives the movable tube 803 to move. The deformation of the corrugated tube 802 can make the discharge end of the movable tube 803 face temporary storage bin 1 602 or temporary storage bin 2 603, thereby replenishing temporary storage bin 1 602 or temporary storage bin 2 603. This ensures that there is sufficient raw material in temporary storage bin 1 602 or temporary storage bin 2 603, facilitates the switching between temporary storage bin 1 602 and temporary storage bin 2 603, and ensures a continuous supply of raw materials to the extruder body 2.

[0041] It should be noted that the extruder body 2, screw feeder 4, electric telescopic rod 702, material level sensor 12, audible and visual alarm 13 and controller 14 mentioned in this application are all common knowledge in the field. Their working principles are known technologies. The specific models and specifications can be selected and determined according to the device and actual conditions, so they will not be described in detail.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A feeding device for a plastic film extruder, comprising a fixed pad (1), an extruder body (2), and a screw feeder (4), wherein the extruder body (2) is provided with a feed hopper (3), characterized in that, The top of the fixed pad (1) and the side near the extruder body (2) are fixed with a feeding assembly (6) by a bracket; The feeding assembly (6) includes a temporary storage bin one (602) and a temporary storage bin two (603). A discharge pipe (9) for feeding plastic film raw materials into the feed hopper (3) is provided between the bottoms of the temporary storage bin one (602) and the temporary storage bin two (603). The top side of the screw feeder (4) is connected to a feeding pipe (8) that feeds plastic film raw materials into temporary storage bin one (602) and temporary storage bin two (603) respectively. The top of the temporary storage bin one (602) is equipped with a drive assembly (7) for driving the feeding pipe (8) to change direction.

2. The feeding device for a plastic film extruder according to claim 1, characterized in that, Both the first temporary storage compartment (602) and the second temporary storage compartment (603) are provided with transparent windows (604) on their sides. A guide plate (601) is fixed at the top between the first temporary storage compartment (602) and the second temporary storage compartment (603). The two sides of the guide plate (601) are inclined inwards towards the interior of the first temporary storage compartment (602) and the second temporary storage compartment (603), respectively.

3. The feeding device for a plastic film extruder according to claim 1, characterized in that, The discharge pipe (9) includes a U-shaped pipe (901) and a discharge pipe (902). The two ends of the U-shaped pipe (901) are respectively connected to the bottom of the first temporary storage bin (602) and the second temporary storage bin (603). The discharge pipe (902) is inclined and one end is connected to the bottom of the U-shaped pipe (901), and the other end is located above the feed hopper (3).

4. The feeding device for a plastic film extruder according to claim 3, characterized in that, The two ends of the U-shaped tube (901) are respectively equipped with a discharge valve one (10) and a discharge valve two (11). The discharge valve one (10) is located below the temporary storage bin one (602) and cooperates with the temporary storage bin one (602). The discharge valve two (11) is located below the temporary storage bin two (603) and cooperates with the temporary storage bin two (603).

5. The feeding device for a plastic film extruder according to claim 1, characterized in that, The feeding pipe (8) is designed to be inclined and includes a fixed pipe (801), a corrugated pipe (802) and a movable pipe (803). One end of the fixed pipe (801) is connected to the discharge port of the screw feeder (4) and the other end is fixedly connected to the corrugated pipe (802). The other end of the corrugated pipe (802) is fixedly connected to the movable pipe (803). The end of the movable pipe (803) away from the corrugated pipe (802) is located above the feeding assembly (6).

6. The feeding device for a plastic film extruder according to claim 5, characterized in that, The drive assembly (7) includes a fixed plate (701) and an electric telescopic rod (702). The electric telescopic rod (702) is mounted on the fixed plate (701), and the power output shaft of the electric telescopic rod (702) is fixed to the side of the movable tube (803).

7. The feeding device for a plastic film extruder according to claim 1, characterized in that, The screw feeder (4) is installed on the top of the fixed pad (1) and on one side of the feeding assembly (6). The bottom side of the screw feeder (4) is provided with a feed inlet. The top of the fixed pad (1) and on one side of the screw feeder (4) is also fixed with a storage bin (5). The bottom of the storage bin (5) near the screw feeder (4) is connected to the feed inlet of the extruder body (2) through a guide pipe, and the guide pipe is designed to be inclined.

8. The feeding device for a plastic film extruder according to claim 1, characterized in that, Material level sensors (12) are installed on the inner walls of temporary storage bin 1 (602) and temporary storage bin 2 (603) near the bottom. Audible and visual alarms (13) are installed on the top of temporary storage bin 1 (602) and temporary storage bin 2 (603). A controller (14) is also installed between temporary storage bin 1 (602) and temporary storage bin 2 (603).

9. The feeding device for a plastic film extruder according to claim 8, characterized in that, The level sensor (12) in the first temporary storage bin (602) is connected to the audible and visual alarm (13) on the first temporary storage bin (602) via an electrical signal through the controller (14). The level sensor (12) in the second temporary storage bin (603) is connected to the audible and visual alarm (13) on the second temporary storage bin (603) via an electrical signal through the controller (14).

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