Extruder for the production of plastic products

Abstract

The application relates to the technical field of extruders and discloses an extruder for plastic product production, which comprises an extruder body, the side surface of the extruder body is fixed with a side plate, the top surface of the side plate is fixed with a vertical plate, and a feeding seat is arranged on the extruder body; a feeding unit is arranged on the extruder body, the feeding unit is composed of a hopper, a guide rail assembly, a shielding assembly, an auxiliary reset assembly and a clamping assembly, the guide rail assembly is composed of two guide rail structures which are oppositely arranged, and each guide rail structure comprises a first guide rail and a second guide rail. The movable hopper is designed, when workers load materials, the hopper only needs to be pulled to move to a position close to the ground, raw materials can be conveniently poured into the hopper, the raw materials do not need to be carried to a high position for loading, and the loading difficulty and labor intensity are reduced.

Description

Technical Field

[0001] This invention relates to the field of extruder technology, and more particularly to an extruder for producing plastic products. Background Technology

[0002] An extruder used in the production of plastic products is a continuous molding device that uses heating, pressurization, and a continuous conveying system to melt plastic raw materials and extrude them into specific shapes.

[0003] A search revealed that Chinese patent CN210390047U discloses a plastic extruder, comprising an extruder body, a first rotary motor disposed at one end of the extruder body, a spiral extrusion shaft disposed within the extruder body and fixedly connected to the first rotary motor, and a discharge port disposed at the other end of the extruder body. A spiral cutter is arranged around the outside of the spiral extrusion shaft, and a transverse cutter is fixedly connected to one side of the spiral cutter. A feeding device is fixedly connected to the top of the extruder body, and a first heating plate is fixedly disposed on the inner wall of the extruder body. This design, by incorporating the transverse cutter, facilitates cutting the plastic stuck between the spiral cutters, resulting in better cutting performance and easier extrusion. The spiral stirring shaft of the feeding device helps to stir the incoming material, facilitating gradual feeding and preventing the plastic from being extruded all at once. The second heating plate preheats the material. However, in practical use, the above design still has the following shortcomings:

[0004] Extruders are quite tall, and the feeding hopper is usually located on top of the extruder. Therefore, the feeding hopper is relatively high above the ground. When feeding, workers need to lift and move the raw materials into the feeding hopper, which is time-consuming and labor-intensive. In addition, although there are screw feeders specifically designed to assist in feeding, these devices have a large footprint, high initial investment costs, and require additional investment for maintenance. They are not well-suited for small and medium-sized production scenarios.

[0005] Therefore, it is necessary to design an extruder for the production of plastic products to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an extruder for the production of plastic products.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An extruder for producing plastic products includes an extruder body, a side plate fixed to the side of the extruder body, a vertical plate fixed to the top surface of the side plate, and a feed seat provided on the extruder body.

[0009] The extruder body is provided with a feeding unit, which consists of a hopper, a guide rail assembly, a blocking assembly, an auxiliary reset assembly, and a snap-fit ​​assembly. The guide rail assembly consists of two guide rail structures arranged opposite each other. Each guide rail structure includes a first guide rail and a second guide rail. The hopper is slidably disposed between the two first guide rails. The blocking assembly is used to block the hopper. The blocking assembly includes a sliding plate, which is slidably disposed between the two second guide rails.

[0010] The auxiliary reset assembly is used for resetting the hopper, and the auxiliary reset assembly consists of a counterweight structure, a traction structure and a water supply structure.

[0011] The snap-fit ​​assembly is used to restrict the position of the lifting frame.

[0012] As a preferred embodiment of the present invention, the first guide rail has an L-shaped structure, and the first guide rail is composed of a vertical part and a horizontal part. The second guide rail is fixed to the side of the first guide rail, and the second guide rail is connected to the vertical part of the first guide rail.

[0013] As a preferred embodiment of the present invention, the shielding assembly further includes a rubber pad, which is fixed to the top surface of the sliding plate. A baffle is fixed on the rubber pad, and an inclined surface is provided at the end of the baffle near the hopper. A limiting strip is fixed on the side of the baffle away from the hopper, and the limiting strip provides a limit for the hopper.

[0014] As a preferred embodiment of the present invention, the counterweight structure includes a counterweight water tank, which is slidably mounted on the side of a vertical plate. A movable plate is slidably disposed inside the counterweight water tank, and the side of the movable plate is in contact with the inner surface of the counterweight water tank. A connecting rod is fixed to the bottom surface of the movable plate. A hole is opened on the bottom surface of the counterweight water tank. The end of the connecting rod away from the movable plate extends through the hole to the outside of the counterweight water tank and is fixed with a fixing plate. An inlet pipe and a drain pipe are connected to the counterweight water tank. A one-way valve is installed on both the inlet pipe and the drain pipe. A horizontal plate is fixed inside the inlet pipe. A top rod is fixed on the horizontal plate, and the end of the top rod away from the horizontal plate extends to the outside of the inlet pipe.

[0015] As a preferred embodiment of the present invention, a one-way valve installed on the inlet pipe restricts the water flow to only enter the counterweight water tank, and a one-way valve installed on the drain pipe restricts the water flow to only flow out of the counterweight water tank.

[0016] As a preferred embodiment of the present invention, the traction structure includes a rotating shaft and a lifting frame. The rotating shaft is rotatably mounted on the top of the vertical plate. A pulley is fixedly sleeved on the rotating shaft, and a connecting rope is wound around the pulley. The lifting frame is slidably sleeved on the vertical part of one of the first guide rails. One end of the connecting rope is connected to a counterweight water tank, and the other end is connected to the lifting frame.

[0017] As a preferred embodiment of the present invention, the water supply structure includes a water storage tank, which is fixed to the top of the vertical plate by a connecting frame. The water storage tank is connected to the end of the drain pipe away from the counterweight water tank. An installation pipe is connected to the bottom surface of the water storage tank. A bracket is fixed inside the installation pipe. There is a gap between the bracket and the inner wall of the installation pipe for drainage. A drain outlet is opened on the bracket. A movable plug is provided on the bracket, and the plug is connected to the bracket by a connecting spring.

[0018] As a preferred embodiment of the present invention, the snap-fit ​​assembly includes a mounting plate, the mounting plate having an opening, a snap-fit ​​plate slidably disposed in the opening, the snap-fit ​​plate having an inclined surface, the snap-fit ​​plate being connected to the mounting plate by a tension spring, and the snap-fit ​​plate being positioned directly opposite the lifting frame.

[0019] As a preferred embodiment of the present invention, a power storage component is provided between the two first guide rails. The power storage component is used to assist the upward movement of the hopper. The power storage component includes a sliding seat and a power storage spring. The sliding seat is located between the vertical parts of the two first guide rails and is slidably disposed on the two first guide rails. One end of the power storage spring is connected to the side plate and the other end is connected to the sliding seat.

[0020] As a preferred embodiment of the present invention, the number of feeding units is two, and the two feeding units are respectively distributed on both sides of the extruder body.

[0021] The present invention has the following beneficial effects:

[0022] 1. The extruder is designed with a movable hopper. When the operator is loading materials, he only needs to pull the hopper to move it to a position close to the ground, and then he can easily pour the raw materials into the hopper. There is no need to lift the raw materials to a high place for loading, which reduces the difficulty and labor intensity of loading. At the same time, there is no need to set up a separate loading equipment, which simplifies the configuration of production equipment and avoids the problem of excessive space occupied by additional equipment. This makes the layout of the production site more compact and reasonable, and improves the space utilization rate.

[0023] 2. The feeding unit is equipped with a shielding component. The baffle can effectively shield the bottom opening of the hopper in the initial state. When the hopper moves, the inclined design of the baffle allows the bottom of the hopper to smoothly press the baffle and move it down. After the hopper has completely moved above the baffle, the baffle presses the bottom opening of the hopper under the elasticity of the rubber pad, thereby effectively preventing material leakage during the movement of the hopper, reducing the waste of raw materials and cleaning work.

[0024] 3. The auxiliary reset component provides powerful assistance for the reset of the hopper through the coordinated action of the counterweight structure, traction structure and water supply structure. When the hopper is full of raw materials, the counterweight water tank is filled with water. Its gravity is converted into a force that pulls the hopper upward through the connecting rope and lifting frame. Together with the elastic force released by the storage spring in the storage component, it pushes the hopper upward, which greatly reduces the physical exertion required for workers to reset the hopper and improves work efficiency.

[0025] 4. The water storage tank and counterweight tank in the water supply structure are connected by an inlet pipe and an outlet pipe, and are equipped with a one-way valve and a movable plug to realize the recycling of water flow. When the counterweight tank descends, the movable plate pushes the water flow back to the storage tank through the outlet pipe, which saves water resources and reduces production costs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an extruder for producing plastic products according to the present invention;

[0027] Figure 2 for Figure 1 Enlarged view of the structure at point A;

[0028] Figure 3 Schematic diagram of the feeding unit Figure 1 ;

[0029] Figure 4 for Figure 3 Enlarged view of the structure at point B;

[0030] Figure 5 Schematic diagram of the feeding unit Figure 2 ;

[0031] Figure 6 for Figure 5 Enlarged view of the structure at point C;

[0032] Figure 7 This is a schematic diagram of the structure when the hopper moves onto the vertical part of the two first guide rails;

[0033] Figure 8 This is a cross-sectional structural diagram of the counterweight water tank;

[0034] Figure 9 for Figure 8 Enlarged view of the structure at point D;

[0035] Figure 10 This is a schematic diagram of the structure when the inlet pipe and the installation pipe are connected.

[0036] Figure 11 for Figure 10 Enlarged view of the structure at point E;

[0037] Figure 12 for Figure 10 A magnified view of the local structure.

[0038] In the diagram: 1. Extruder body; 11. Side plate; 12. Vertical plate; 13. Feed seat; 2. Hopper; 31. First guide rail; 311. Lifting frame; 32. Second guide rail; 41. Sliding plate; 42. Rubber pad; 43. Baffle; 431. Limiting strip; 51. Counterweight water tank; 52. Movable plate; 53. Connecting rod; 54. Fixed plate; 55. Water inlet pipe; 551. Horizontal plate; 552. Top rod; 56. Drain pipe; 57. One-way valve; 61. Rotating shaft; 62. Pulley; 63. Connecting rope; 71. Water storage tank; 72. Mounting pipe; 73. Bracket; 74. Block; 81. Mounting plate; 82. Clamping plate; 83. Tension spring; 91. Sliding seat; 92. Storage spring. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0040] Reference Figure 1-12 An extruder for producing plastic products includes an extruder body 1, a side plate 11 fixed to the side of the extruder body 1, and a vertical plate 12 (e.g., ...) fixed to the top surface of the side plate 11. Figure 5 As shown), the extruder body 1 is equipped with a feed seat 13 and a feeding unit, which includes a hopper 2 for storing plastic granule raw materials. The feed seat 13 and the hopper 2 are connected by two fasteners. When the hopper 2 is aligned with the feed seat 13, the operator uses the two fasteners to fix the feed seat 13 and the hopper 2. The feeding unit also includes a guide rail assembly, which consists of two guide rail structures facing each other. Each guide rail structure includes a first guide rail 31 and a second guide rail 32. The first guide rail 31 has an L-shaped structure and consists of a vertical part and a horizontal part. The second guide rail 32 is fixed to the side of the first guide rail 31 and is connected to the vertical part of the first guide rail 31. The hopper 2 is slidably disposed between the two first guide rails 31. Specifically, two rollers are fixed to the side of the hopper 2, and the two rollers are slidably disposed on the two first guide rails 31 respectively. In the initial state, as shown... Figure 3 As shown, the two rollers are located at the ends of the horizontal sections of the two first guide rails 31 respectively. In this state, the hopper 2 is positioned directly opposite the feed seat 13. At this time, the plastic granule raw material in the hopper 2 can enter the interior of the extruder body 1 through the feed seat 13 to feed the extruder body 1.

[0041] The feeding unit also includes a shielding assembly for shielding the hopper 2. The shielding assembly includes a sliding plate 41, which is slidably disposed between two second guide rails 32. Specifically, rollers are fixed on both sides of the sliding plate 41, and the two rollers are slidably disposed on the two second guide rails 32 respectively. In the initial state, as shown... Figure 3 As shown, the two rollers on the sliding plate 41 are located at the ends of the two second guide rails 32, and at this time, the side of the sliding plate 41 is in contact with the side of the feed seat 13 (as shown). Figure 2 As shown), a rubber pad 42 is fixed to the top surface of the sliding plate 41, and a baffle 43 is fixed to the rubber pad 42. The baffle 43 has an inclined surface at one end near the hopper 2. When the hopper 2 moves towards the baffle 43, the bottom of the hopper 2 first presses against the inclined surface of the baffle 43, causing the baffle 43 to move downwards. As the baffle 43 moves downwards, it presses against the rubber pad 42, causing the rubber pad 42 to deform. When the hopper 2 is completely above the baffle 43, the elastic force of the rubber pad 42 causes the baffle 43 to press against the opening at the bottom of the hopper 2, thus ensuring the baffle... The baffle 43 shields the hopper 2 to prevent material leakage and facilitates the pouring of raw materials into the hopper 2. A limit strip 431 is fixed on the side of the baffle 43 away from the hopper 2. The limit strip 431 provides a limit for the hopper 2. When the hopper 2 moves to the position where it contacts the limit strip 431, the baffle 43 can completely block the opening at the bottom of the hopper 2. At the same time, the two rollers on the hopper 2 and the two rollers on the sliding plate 41 are aligned with each other in the vertical direction so that the four rollers can move together into the vertical part of the two first guide rails 31.

[0042] The extruder proposed in this invention has a movable hopper 2. When feeding, the operator pulls the hopper 2 to move it to a position close to the ground. During this process, two first guide rails 31 provide guidance, and the baffle 43 provides a shielding function. Then, the operator pours the raw material into the hopper 2 and finally resets the hopper 2 to connect it with the feed seat 13. This method not only eliminates the need for the operator to lift the raw material to a high place for feeding, but also eliminates the need for a separate feeding device. It facilitates the feeding process and avoids the overall space occupied by the device being too large.

[0043] The feeding unit also includes an auxiliary reset assembly, which is used to reset the hopper 2 to reduce the labor intensity of the workers. The auxiliary reset assembly consists of a counterweight structure, a traction structure, and a water supply structure. The counterweight structure includes a counterweight water tank 51, which is slidably mounted on the side of the vertical plate 12 (e.g., Figure 7 As shown), a slide rail is fixed to the side of the vertical plate 12, and a slider is installed on the slide rail. The counterweight water tank 51 is fixed to the side of the slider. The slide rail and the slider provide a limit for the counterweight water tank 51, allowing the counterweight water tank 51 to move up and down along the height direction of the vertical plate 12. A movable plate 52 is slidably arranged inside the counterweight water tank 51, and the side of the movable plate 52 is in contact with the inner surface of the counterweight water tank 51. A connecting rod 53 is fixed to the bottom surface of the movable plate 52. A hole is opened on the bottom surface of the counterweight water tank 51. The end of the connecting rod 53 away from the movable plate 52 extends through the hole to the outside of the counterweight water tank 51 and is fixed with a fixing plate 54 (e.g., Figure 10 As shown), in the initial state, as Figure 8 As shown, the counterweight water tank 51 is located at the lower limit position. At this time, the fixed plate 54 falls on the side plate 11, the counterweight water tank 51 falls on the fixed plate 54, and the movable plate 52 is located at the inner top position of the counterweight water tank 51.

[0044] The counterweight water tank 51 is connected to an inlet pipe 55 and a drain pipe 56. Both the inlet pipe 55 and the drain pipe 56 are equipped with check valves 57. The check valve 57 on the inlet pipe 55 restricts water flow to only enter the counterweight water tank 51, and the check valve 57 on the drain pipe 56 restricts water flow to only exit the counterweight water tank 51. A horizontal plate 551 is fixed inside the inlet pipe 55 (e.g., a horizontal plate 551). Figure 12 As shown), a top rod 552 is fixed on the horizontal plate 551. The end of the top rod 552 away from the horizontal plate 551 extends to the outside of the water inlet pipe 55. The connection between the water inlet pipe 55 and the counterweight water tank 51 is located at the top of the counterweight water tank 51. In the initial state, the connection between the water inlet pipe 55 and the counterweight water tank 51 is located above the movable plate 52, so that the water flow can be accumulated above the movable plate 52.

[0045] The traction structure includes a rotating shaft 61 and a lifting frame 311. The rotating shaft 61 is rotatably mounted on the top of the vertical plate 12. A pulley 62 is fixedly sleeved on the rotating shaft 61, and a connecting rope 63 is wound around the pulley 62. The lifting frame 311 is slidably sleeved on the vertical part of one of the first guide rails 31. One end of the connecting rope 63 is connected to the counterweight water tank 51, and the other end is connected to the lifting frame 311. The lifting frame 311 and the counterweight water tank 51 are connected by the connecting rope 63. When the hopper 2 and the sliding plate 41 move down synchronously along the vertical part of the first guide rail 31, one of the rollers on the hopper 2 will push the lifting frame 311, causing the lifting frame 311 to descend. When the lifting frame 311 moves down, it can pull the counterweight water tank 51 through the connecting rope 63, causing the counterweight water tank 51 to move up. When the hopper 2 and the sliding plate 41 descend to a position close to the ground, the counterweight water tank 51 moves up to a position close to the vertical plate 12.

[0046] The water supply structure includes a water storage tank 71 (e.g. Figure 12 As shown), the water storage tank 71 is fixed to the top of the vertical plate 12 by a connecting bracket. An installation pipe 72 is connected to the bottom of the water storage tank 71. A bracket 73 is fixed inside the installation pipe 72. There is a gap between the bracket 73 and the inner wall of the installation pipe 72 for drainage. A drain outlet is provided on the bracket 73. A movable plug 74 is provided on the bracket 73, and the plug 74 is connected to the bracket 73 by a connecting spring. Under the action of the connecting spring, the plug 74 always tends to block the drain outlet. In this state, the water inside the water storage tank 71... Water cannot be discharged through the installation pipe 72. When the hopper 2 moves to a position close to the ground, the counterweight water tank 51 moves up to a position close to the top of the vertical plate 12. At this time, the inlet pipe 55 will be inserted into the installation pipe 72, and the push rod 552 will push up the block 74, so that the block 74 no longer blocks the drain. In this case, the water in the storage tank 71 can flow out through the drain and enter the counterweight water tank 51 through the inlet pipe 55, and finally accumulate in the counterweight water tank 51. It is worth noting that when the counterweight water tank 51 is far away from the side plate 11 (such as...), Figure 10 As shown), the movable plate 52, connecting rod 53 and fixed plate 54 will move downward under the action of gravity until the movable plate 52 falls on the inner bottom surface of the counterweight water tank 51. The water storage tank 71 is connected to the end of the drain pipe 56 away from the counterweight water tank 51, which allows the water in the counterweight water tank 51 to flow back to the interior of the water storage tank 71 through the drain pipe 56.

[0047] like Figure 11As shown, a snap-fit ​​assembly is provided on the side plate 11. The snap-fit ​​assembly is used to limit the position of the lifting frame 311. The snap-fit ​​assembly includes a mounting plate 81, which has an opening. A snap-fit ​​plate 82 is slidably disposed in the opening. The snap-fit ​​plate 82 has an inclined surface. The snap-fit ​​plate 82 is connected to the mounting plate 81 by a tension spring 83. When the lifting frame 311 descends with the sliding plate 41 to a position close to the ground, the lifting frame 311 will press against the inclined surface of the snap-fit ​​plate 82. When the snap-fit ​​plate 82 is pressed, it will move under the action of its inclined surface and stretch the tension spring 83. When the lifting frame 311 moves below the snap-fit ​​plate 82, the snap-fit ​​plate 82 will... The spring 83 resets the device and moves it above the lifting frame 311. At this time, the clamping plate 82 will constrain the position of the lifting frame 311, preventing it from moving upward. When the position of the lifting frame 311 is constrained, the position of the counterweight water tank 51 is also fixed. This design ensures that the water inlet pipe 55 and the installation pipe 72 are always connected during the process of adding raw materials to the hopper 2, so that the water in the water tank 71 has enough time to enter the counterweight water tank 51, which is convenient for the subsequent assisted reset of the hopper 2. The side of the clamping plate 82 is fixed with a pull ring, which makes it convenient for the staff to control the position of the clamping plate 82.

[0048] When hopper 2 is full of raw materials, the operator can pull the pull ring to move the clamping plate 82, thereby releasing the clamping plate 82 from the lifting frame 311. In this case, the lifting frame 311 can move upward, and the counterweight water tank 51 can also move downward. Since the counterweight water tank 51 is full of water, it will move downward and pull the lifting frame 311 upward through the connecting rope 63. When the lifting frame 311 moves upward, it can push the corresponding rollers, causing the sliding plate 41 and hopper 2 to move upward. In this process, the counterweight water tank 51 and the water inside it play an auxiliary role in the upward movement of hopper 2, without requiring the operator to expend too much physical strength to lift hopper 2. This reduces the labor intensity of the workers. When the hopper 2 moves to the top of the vertical part of the first guide rail 31, the workers push the hopper 2 so that the hopper 2 moves along the horizontal part of the first guide rail 31 and finally pushes the hopper 2 to the state of being aligned with the feed seat 13, so that the raw materials can be fed. It can be understood that when the two rollers on the hopper 2 move to the top of the vertical part of the two first guide rails 31 respectively, the two rollers on the sliding plate 41 move to the position where the two first guide rails 31 are connected to the two second guide rails 32. This makes it so that when the hopper 2 moves to the horizontal part of the two first guide rails 31, the sliding plate 41 moves to the two second guide rails 32.

[0049] When the counterweight water tank 51 descends to a position close to the side plate 11, the fixed plate 54 will first contact the side plate 11 and stop moving, while the counterweight water tank 51 will continue to descend. At this time, the movable plate 52 and the counterweight water tank 51 will move relative to each other, which allows the movable plate 52 to discharge the water in the counterweight water tank 51 into the water storage tank 71 through the drain pipe 56, so that the water can flow back to the water storage tank 71 and realize the recycling of the water.

[0050] A power storage assembly is provided between the two first guide rails 31. The power storage assembly is used to assist the upward movement of the hopper 2. The power storage assembly includes a sliding seat 91 and a power storage spring 92. The sliding seat 91 is located between the vertical parts of the two first guide rails 31 (e.g., Figure 7 As shown), the sliding seat 91 is slidably mounted on the two first guide rails 31. One end of the energy storage spring 92 is connected to the side plate 11, and the other end is connected to the sliding seat 91. When the sliding plate 41 moves downward, the sliding plate 41 will fall on the sliding seat 91 and drive the sliding seat 91 to move downward. At this time, the sliding seat 91 will squeeze the energy storage spring 92. After the raw material is added, the worker pulls the pull ring to release the constraint of the clamping plate 82 on the lifting frame 311, so that the hopper 2 can move upward. At this time, the energy storage spring 92 will release the elastic force and push the hopper 2 upward through the sliding seat 91, providing an additional upward thrust for the hopper 2. The thrust of the energy storage spring 92, together with the pulling force of the counterweight water tank 51, can further reduce the physical strength consumed by the worker when resetting the hopper 2.

[0051] There are two feeding units, which are distributed on both sides of the extruder body 1. By setting up two feeding units, the extruder body 1 can be fed alternately. When one hopper 2 is connected to the feed seat 13, the operator can add raw materials to the other hopper 2. In this way, when the raw materials in one hopper 2 are exhausted, the operator can connect the hopper 2 full of raw materials to the feed seat 13 in time, and at the same time replenish the raw materials in the idle hopper 2. This setting can avoid the feeding gap and ensure the working efficiency of the extruder.

[0052] The specific working principle of this invention is as follows:

[0053] In the initial state, the hopper 2 is directly opposite the feed seat 13 at the horizontal end of the two first guide rails 31, the sliding plate 41 is at the end of the two second guide rails 32, and its side is in contact with the side of the feed seat 13. The inclined surface of the side of the baffle 43 faces the hopper 2. The counterweight water tank 51 is at the lower limit position. The fixed plate 54 is on the side plate 11. The counterweight water tank 51 is on the fixed plate 54. The movable plate 52 is located at the top inside the counterweight water tank 51. The water inlet pipe 55 is connected to the counterweight water tank 51 above the movable plate 52. The water in the water storage tank 71 cannot be discharged because the drain is blocked by the block 74. The lifting frame 311 is not constrained.

[0054] During material loading, the worker pulls the hopper 2, which causes the sliding plate 41 to move down synchronously along the vertical part of the first guide rail 31. The rollers on the hopper 2 push the lifting frame 311 down, and the lifting frame 311 pulls the counterweight water tank 51 upward through the connecting rope 63. When the hopper 2 and the sliding plate 41 descend to near the ground, the counterweight water tank 51 moves up to near the top of the vertical plate 12, the water inlet pipe 55 is inserted into the installation pipe 72, and the push rod 552 pushes up the block 74, and the water storage tank 7... The water in section 1 enters the counterweight water tank 51 through the drain outlet and the inlet pipe 55 for storage. At the same time, when the lifting frame 311 descends to a position close to the ground, it presses the inclined surface of the clamping plate 82. The clamping plate 82 moves and stretches the tension spring 83. After the lifting frame 311 moves below the clamping plate 82, the clamping plate 82 returns to the position above the lifting frame 311 under the action of the tension spring 83, constraining the position of the lifting frame 311, so that the inlet pipe 55 and the installation pipe 72 are connected, ensuring that the water flows into the counterweight water tank 51 sufficiently.

[0055] At this time, the staff pours raw materials into the hopper 2. The rubber pad 42 and baffle 43 on the top surface of the sliding plate 41 cover the bottom opening of the hopper 2. The limiting strip 431 on the side of the baffle 43 away from the hopper 2 provides a limit for the hopper 2, ensuring that the baffle 43 completely blocks the bottom opening of the hopper 2 and avoids material leakage.

[0056] When hopper 2 is full of raw materials, the worker pulls the pull ring to move the clamping plate 82, releasing the constraint on the lifting frame 311. The lifting frame 311 can then move upwards. The counterweight water tank 51, filled with water, moves downwards under gravity, pulling the lifting frame 311 upwards via the connecting rope 63. The upward movement of the lifting frame 311 pushes the corresponding roller, causing the sliding plate 41 and hopper 2 to move upwards. The counterweight water tank 51 and its internal water flow assist the hopper 2 in moving upwards. At the same time, when the sliding plate 41 moves downwards, it falls onto the sliding seat 91, causing it to move downwards and compress the energy storage spring 92. At this time, the energy storage spring 92 releases its elasticity, pushing the hopper 2 upwards through the sliding seat 91, providing an additional upward thrust for the hopper 2. The thrust of the energy storage spring 92, combined with the pulling force of the counterweight water tank 51, further reduces the physical exertion of the worker in resetting the hopper 2.

[0057] When the hopper 2 moves up to the top of the vertical part of the first guide rail 31, the worker pushes the hopper 2 to move along the horizontal part of the first guide rail 31 so that the hopper 2 is aligned with the feeding seat 13 to realize the feeding of raw materials. During the upward movement of the hopper 2, the counterweight water tank 51 descends to near the side plate 11. The fixed plate 54 first contacts the side plate 11 and stops moving. The counterweight water tank 51 continues to descend. The movable plate 52 moves relative to the counterweight water tank 51, pushing the water in the counterweight water tank 51 into the water storage tank 71 through the drain pipe 56 to realize the recycling of water.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An extruder for producing plastic products, characterized in that, The extruder body (1) includes a side plate (11) fixed on the side of the extruder body (1), a vertical plate (12) fixed on the top surface of the side plate (11), and a feed seat (13) provided on the extruder body (1). The extruder body (1) is provided with a feeding unit, which consists of a hopper (2), a guide rail assembly, a shielding assembly, an auxiliary reset assembly and a snap-fit ​​assembly. The guide rail assembly consists of two guide rail structures, which are arranged opposite each other. Each guide rail structure includes a first guide rail (31) and a second guide rail (32). The hopper (2) is slidably disposed between the two first guide rails (31). The shielding assembly is used to shield the hopper (2). The shielding assembly includes a sliding plate (41), which is slidably disposed between the two second guide rails (32). The shielding assembly also includes a rubber pad (42), which is fixed to the top surface of the sliding plate (41). A baffle (43) is fixed on the rubber pad (42). The baffle (43) has an inclined surface at one end near the hopper (2), and a limit strip (431) is fixed on the side of the baffle (43) away from the hopper (2). The limit strip (431) provides a limit for the hopper (2). The auxiliary reset assembly is used to reset the hopper (2). The auxiliary reset assembly consists of a counterweight structure, a traction structure and a water supply structure. The snap-fit ​​assembly is used to limit the position of the lifting frame (311).

2. The extruder for producing plastic products according to claim 1, characterized in that, The first guide rail (31) has an L-shaped structure and is composed of a vertical part and a horizontal part. The second guide rail (32) is fixed to the side of the first guide rail (31) and is connected to the vertical part of the first guide rail (31).

3. The extruder for producing plastic products according to claim 1, characterized in that, The counterweight structure includes a counterweight water tank (51), which is slidably mounted on the side of the vertical plate (12). A movable plate (52) is slidably disposed inside the counterweight water tank (51), and the side of the movable plate (52) is in contact with the inner surface of the counterweight water tank (51). A connecting rod (53) is fixed to the bottom surface of the movable plate (52). A hole is provided on the bottom surface of the counterweight water tank (51), and the end of the connecting rod (53) away from the movable plate (52) passes through the hole and extends... Extending to the outside of the counterweight water tank (51), and fixed with a fixing plate (54), the counterweight water tank (51) is connected to an inlet pipe (55) and a drain pipe (56), both the inlet pipe (55) and the drain pipe (56) are equipped with a one-way valve (57), a horizontal plate (551) is fixed inside the inlet pipe (55), a top rod (552) is fixed on the horizontal plate (551), and the end of the top rod (552) away from the horizontal plate (551) extends to the outside of the inlet pipe (55).

4. The extruder for producing plastic products according to claim 3, characterized in that, A one-way valve (57) installed on the inlet pipe (55) restricts the water flow to enter the counterweight water tank (51), and a one-way valve (57) installed on the drain pipe (56) restricts the water flow to exit the counterweight water tank (51).

5. An extruder for producing plastic products according to claim 3, characterized in that, The traction structure includes a rotating shaft (61) and a lifting frame (311). The rotating shaft (61) is rotatably mounted on the top of the vertical plate (12). A pulley (62) is fixedly sleeved on the rotating shaft (61). A connecting rope (63) is wound around the pulley (62). The lifting frame (311) is slidably sleeved on the vertical part of one of the first guide rails (31). One end of the connecting rope (63) is connected to the counterweight water tank (51), and the other end is connected to the lifting frame (311).

6. An extruder for producing plastic products according to claim 5, characterized in that, The water supply structure includes a water storage tank (71), which is fixed to the top of the vertical plate (12) by a connecting frame. The water storage tank (71) is connected to the end of the drain pipe (56) away from the counterweight water tank (51). The bottom surface of the water storage tank (71) is connected to an installation pipe (72). A bracket (73) is fixed inside the installation pipe (72). There is a gap between the bracket (73) and the inner wall of the installation pipe (72) for drainage. A drain outlet is opened on the bracket (73). A movable block (74) is provided on the bracket (73), and the block (74) is connected to the bracket (73) by a connecting spring.

7. An extruder for producing plastic products according to claim 5, characterized in that, The snap-fit ​​assembly includes a mounting plate (81), which has an opening. A snap plate (82) is slidably disposed in the opening. The snap plate (82) has an inclined surface. The snap plate (82) and the mounting plate (81) are connected by a tension spring (83). The snap plate (82) is positioned directly opposite the lifting frame (311).

8. An extruder for producing plastic products according to claim 1, characterized in that, A power storage component is provided between the two first guide rails (31). The power storage component is used to assist the upward movement of the hopper (2). The power storage component includes a sliding seat (91) and a power storage spring (92). The sliding seat (91) is located between the vertical parts of the two first guide rails (31) and is slidably disposed on the two first guide rails (31). One end of the power storage spring (92) is connected to the side plate (11) and the other end is connected to the sliding seat (91).

9. An extruder for producing plastic products according to any one of claims 1-8, characterized in that, The number of feeding units is two, and the two feeding units are respectively distributed on both sides of the extruder body (1).

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