Full-return PVC (polyvinyl chloride) foam board extrusion die with shunting structure

Abstract

The utility model relates to a full-return PVC foam board extrusion die with a flow dividing structure, and belongs to the technical field of PVC foam board extrusion dies, the full-return PVC foam board extrusion die comprises an extrusion lower die, the top of the extrusion lower die is provided with an extrusion upper die, and the extrusion lower die and the extrusion upper die are provided with discharging channels and flow dividing units; and the extrusion lower die and the extrusion upper die are provided with a cut-off structure and a protection structure. According to the full-feedback PVC foam board extrusion die with the flow dividing structure, an asynchronous motor is used as a driving source, and the main rod is controlled to rotate through mechanical transmission, so that the rotating main rod drives a cut-off tool to turn over, and the cut-off tool which turns over repeatedly is used for cutting off an extruded PVC foam board, so that automatic cut-off instead of personnel is realized, and the production efficiency is improved. The PVC foam board cutting device reduces labor intensity of workers, guarantees that cut PVC foam boards are consistent in length, can control the protective cover to sleeve the outer surface of the cutting tool when not in use, and prevents the cutting tool from scratching the workers.

Description

Technical Field

[0001] This utility model relates to the field of PVC foam board extrusion mold technology, specifically a fully recycled PVC foam board extrusion mold with a diversion structure. Background Technology

[0002] The PVC foam board extrusion die is a crucial component in the production of PVC foam boards. It consists of an upper extrusion die, a lower extrusion die, a flow distribution structure, a feed inlet, and an extrusion channel. The upper and lower extrusion dies are typically made of high-quality steel, which possesses excellent strength, hardness, high-temperature resistance, and corrosion resistance. This ensures the die operates stably and reliably under long-term, high-intensity working conditions, maintaining the quality of the extruded product. The flow distribution structure, located inside the die head body, features a flow distribution cone. Its function is to evenly distribute the material entering from the feed inlet to the surrounding areas or a specific direction, ensuring a relatively uniform distribution of material across the entire cross-section before it enters the molding zone.

[0003] In existing technologies, PVC foam boards are extruded through an extrusion channel after being extruded by a PVC foam board extrusion die. However, continuous PVC foam boards need to be manually cut by workers and then stacked in the material discharge area. However, manual cutting results in high labor intensity for workers and makes it difficult to control the uniformity of the cut length of the PVC foam boards. Therefore, a fully recycled PVC foam board extrusion die with a diversion structure is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fully recycled PVC foam board extrusion mold with a diversion structure, which has the advantage of automatic cutting. This solves the problem that after the PVC foam board is extruded by the PVC foam board extrusion mold, it is discharged through the extrusion channel. However, continuous PVC foam boards need to be manually cut by workers and then stacked in the discharge area. However, the manual cutting method leads to high labor intensity for workers and makes it difficult to control the uniformity of the cut length of the PVC foam board.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fully recycled PVC foam board extrusion mold with a diversion structure, including a lower extrusion mold, an upper extrusion mold on the top of the lower extrusion mold, a discharge channel and a diversion unit on the lower extrusion mold and the upper extrusion mold, and a cut-off structure and a protective structure on the lower extrusion mold and the upper extrusion mold.

[0006] The cutting structure includes a mounting frame fixedly installed on the front of the lower extrusion die and the upper extrusion die. A main rod with one end penetrating through and extending to the outside is rotatably installed inside the mounting frame. A cutting tool for cutting PVC foam board is fixedly connected to the outer surface of the main rod. A threaded rod with one end penetrating through and extending to the outside is rotatably installed inside the mounting frame. A transmission component for driving the main rod to rotate is provided on the outer surface of the threaded rod. An asynchronous motor fixedly connected to one end of the threaded rod is fixedly installed on the top of the mounting frame.

[0007] Furthermore, the protective structure includes a protective cover that is slidably mounted on the outer surface of the main rod and sleeved on the outside of the cutting tool. The mounting frame is provided with a support component for supporting the left and right movement of the protective cover, and a feed component for controlling the movement of the protective cover is fixedly mounted on the bottom of the mounting frame.

[0008] Furthermore, the lower extrusion die and the upper extrusion die are fixedly connected, the flow-dividing unit is fixedly installed in the lower extrusion die and the upper extrusion die, and the discharge channel is fixedly connected to the lower extrusion die and the upper extrusion die respectively.

[0009] Furthermore, the transmission component includes a gear ring and a rack, the outer surfaces of the gear ring and the rack meshing with each other, the gear ring being fixedly installed on the outer surface of the main rod, and the rack being threadedly installed on the outer surface of the threaded rod.

[0010] Furthermore, mounting slots are provided at the top and bottom of the rack, and pressure sensors are fixedly installed in both mounting slots. The two pressure sensors are electrically connected to the asynchronous motor.

[0011] Furthermore, a limiting strip is fixedly installed on the rear side wall of the inner cavity of the mounting frame, and a limiting groove is formed on the back of the rack, with the inner wall of the limiting groove slidably connected to the outer surface of the limiting strip.

[0012] Furthermore, the supporting component includes a supporting plate and a rectangular groove. The rectangular groove is located on the right side of the mounting frame, and one end of the supporting plate passes through the rectangular groove and is fixedly connected to the right side of the protective cover.

[0013] Furthermore, the feeding component includes a mounting platform and an electric push rod. The mounting platform is fixedly installed at the bottom of the mounting frame, and the electric push rod is fixedly installed on the mounting platform. The telescopic end of the electric push rod is fixedly connected to the right side of the protective cover.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] This fully recycled PVC foam board extrusion die with a flow-diversion structure, through the inclusion of a cutting structure and a protective structure, utilizes an asynchronous motor as a drive source and mechanical transmission to control the rotation of the main rod. The rotating main rod causes the cutting blade to rotate, thereby using the repeatedly rotating cutting blade to cut the extruded PVC foam board. This achieves automated cutting, replacing manual labor and reducing the workload of workers. It also ensures that the cut PVC foam board is of consistent length. Furthermore, when not in use, a protective cover can be placed over the cutting blade to prevent injury to workers. These features enhance the practicality of this fully recycled PVC foam board extrusion die with a flow-diversion structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 1 Enlarged view of point A in the image;

[0018] Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 1 The front view;

[0019] Figure 4 This is a three-dimensional schematic diagram of the cutting tool, mounting frame, and main rod of this utility model.

[0020] In the diagram: 1. Lower extrusion die; 2. Upper extrusion die; 3. Discharge channel; 41. Mounting frame; 42. Main rod; 43. Cutting cutter; 44. Threaded rod; 45. Transmission components; 46. Asynchronous motor; 47. Protective cover; 48. Support components; 49. Feeding components; 5. Diverting unit. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1 to 4This embodiment of a fully recycled PVC foam board extrusion mold with a diversion structure includes a lower extrusion mold 1, an upper extrusion mold 2 on the top of the lower extrusion mold 1, a discharge channel 3 and a diversion unit 5 on the lower extrusion mold 1 and the upper extrusion mold 2, a cut-off structure and a protective structure on the lower extrusion mold 1 and the upper extrusion mold 2, the lower extrusion mold 1 and the upper extrusion mold 2 being fixedly connected, the diversion unit 5 being fixedly installed in the lower extrusion mold 1 and the upper extrusion mold 2, and the discharge channel 3 being fixedly connected to the lower extrusion mold 1 and the upper extrusion mold 2 respectively.

[0023] Example 1: Please refer to Figures 1 to 4 In this embodiment, the cutting structure includes a mounting frame 41 fixedly installed on the front of the lower extrusion die 1 and the upper extrusion die 2. A main rod 42 with one end penetrating through and extending to the outside is rotatably installed inside the mounting frame 41. A cutting tool 43 for cutting PVC foam board is fixedly connected to the outer surface of the main rod 42. A threaded rod 44 with one end penetrating through and extending to the outside is rotatably installed inside the mounting frame 41. A transmission component 45 for driving the main rod 42 to rotate is provided on the outer surface of the threaded rod 44. The transmission component 45 includes a gear ring. The rack and the gear ring mesh with each other. The gear ring is fixedly installed on the outer surface of the main rod 42, and the rack is threadedly installed on the outer surface of the threaded rod 44, so as to facilitate the movement of the rack to drive the gear ring to rotate, thereby controlling the rotation of the main rod 42. An asynchronous motor 46 is fixedly installed on the top of the mounting frame 41 and fixedly connected to one end of the threaded rod 44. A limit strip is fixedly installed on the rear side wall of the inner cavity of the mounting frame 41. A limit groove is opened on the back of the rack, and the inner wall of the limit groove is slidably connected to the outer surface of the limit strip to realize the trajectory of limiting the up and down movement of the rack.

[0024] The rack has mounting slots at both the top and bottom, and pressure sensors are fixedly installed in both slots. The two pressure sensors are electrically connected to the asynchronous motor 46, which can be used to control the asynchronous motor 46 to drive the threaded rod 44 to rotate in the opposite direction after the pressure sensors are triggered, thereby controlling the rack connected to the threaded surface of the threaded rod 44 to move up and down.

[0025] Using the above technical solution, the asynchronous motor 46 at the top of the mounting frame 41 is activated, causing the asynchronous motor 46 to drive the threaded rod 44 to rotate. This causes the rack connected to the threaded rod 44 to move downwards until the rack abuts against the inner bottom wall of the mounting frame 41 and triggers the pressure sensor. This controls the asynchronous motor 46 to drive the threaded rod 44 to rotate in the opposite direction, thereby controlling the rack to move upwards. This results in the rack moving up and down reciprocatingly, which in turn causes the moving rack to drive the toothed ring to rotate. This causes the main rod 42 to drive the cutting tool 43 to continuously rotate, thus achieving the cutting of PVC foam board by using the reciprocating cutting tool 43.

[0026] Example 2: Please refer to Figures 1 to 4In this embodiment, the protective structure includes a protective cover 47 that is slidably mounted on the outer surface of the main rod 42 and sleeved on the outside of the cutting tool 43. A support component 48 is provided on the mounting frame 41 for supporting the left and right movement of the protective cover 47. A feed component 49 for controlling the movement of the protective cover 47 is fixedly mounted on the bottom of the mounting frame 41. The feed component 49 includes a mounting platform and an electric push rod. The mounting platform is fixedly mounted on the bottom of the mounting frame 41, and the electric push rod is fixedly mounted on the mounting platform. The telescopic end of the electric push rod is fixedly connected to the right side of the protective cover 47, so that the telescopic movement of the electric push rod can drive the protective cover 47 to move left and right.

[0027] The support component 48 includes a support plate and a rectangular groove. The rectangular groove is located on the right side of the mounting frame 41. One end of the support plate passes through the rectangular groove and is fixedly connected to the right side of the protective cover 47, which facilitates the left and right movement of the protective cover 47.

[0028] By adopting the above technical solution, the electric push rod in the start-up feed component 49 is activated, causing the electric push rod to retract and drive the protective cover 47 to move to the left until the protective cover 47 abuts against the right side of the mounting frame 41 and then the electric push rod is stopped.

[0029] The working principle of the above embodiments is as follows:

[0030] In use, the fully recycled PVC foam board extrusion mold with a diversion structure is operated by activating the electric push rod in the feeding component 49. This causes the electric push rod to retract and move the protective cover 47 to the left until the protective cover 47 abuts against the right side of the mounting frame 41. Then, the electric push rod is stopped, and the asynchronous motor 46 at the top of the mounting frame 41 is activated. This causes the asynchronous motor 46 to drive the threaded rod 44 to rotate, which in turn causes the rack connected to the threaded rod 44 to move downward until it abuts against the inner bottom wall of the mounting frame 41 and triggers the pressure sensor. This controls the asynchronous motor 46 to drive the threaded rod 44 to rotate in the opposite direction, thereby controlling the rack to move upward. This creates a reciprocating motion of the rack, which in turn causes the moving rack to drive the toothed ring to rotate. This causes the main rod 42 to continuously rotate the cutting tool 43, thus achieving the cutting of the PVC foam board using the reciprocating cutting tool 43.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully recycled PVC foam board extrusion die with a diversion structure, comprising an extrusion die (1), characterized in that: The lower extrusion die (1) is provided with an upper extrusion die (2) at its top. The lower extrusion die (1) and the upper extrusion die (2) are provided with a discharge channel (3) and a diversion unit (5). The lower extrusion die (1) and the upper extrusion die (2) are provided with a cutting structure and a protective structure. The cutting structure includes a mounting frame (41) fixedly installed on the front of the lower extrusion die (1) and the upper extrusion die (2). A main rod (42) with one end penetrating through and extending to the outside is rotatably installed inside the mounting frame (41). A cutting tool (43) for cutting PVC foam board is fixedly connected to the outer surface of the main rod (42). A threaded rod (44) with one end penetrating through and extending to the outside is rotatably installed inside the mounting frame (41). A transmission component (45) for driving the main rod (42) to rotate is provided on the outer surface of the threaded rod (44). An asynchronous motor (46) fixedly connected to one end of the threaded rod (44) is fixedly installed on the top of the mounting frame (41).

2. The fully recycled PVC foam board extrusion mold with a flow-diverting structure according to claim 1, characterized in that: The protective structure includes a protective cover (47) that is slidably mounted on the outer surface of the main rod (42) and sleeved on the outside of the cutting tool (43). The mounting frame (41) is provided with a support component (48) for supporting the left and right movement of the protective cover (47). The bottom of the mounting frame (41) is fixedly mounted with a feed component (49) for controlling the movement of the protective cover (47).

3. The fully recycled PVC foam board extrusion mold with a flow-diverting structure according to claim 1, characterized in that: The lower extrusion die (1) and the upper extrusion die (2) are fixedly connected. The flow diversion unit (5) is fixedly installed in the lower extrusion die (1) and the upper extrusion die (2). The discharge channel (3) is fixedly connected to the lower extrusion die (1) and the upper extrusion die (2) respectively.

4. The fully recycled PVC foam board extrusion mold with a flow-diverting structure according to claim 1, characterized in that: The transmission component (45) includes a toothed ring and a rack, the outer surfaces of the toothed ring and the rack meshing with each other, the toothed ring being fixedly installed on the outer surface of the main rod (42), and the rack being threadedly installed on the outer surface of the threaded rod (44).

5. The fully recycled PVC foam board extrusion mold with a flow-diverting structure according to claim 4, characterized in that: The rack has mounting slots at both the top and bottom, and pressure sensors are fixedly installed in both mounting slots. The two pressure sensors are electrically connected to the asynchronous motor (46).

6. The fully recycled PVC foam board extrusion mold with a flow-diverting structure according to claim 4, characterized in that: A limiting strip is fixedly installed on the rear side wall of the inner cavity of the mounting frame (41), and a limiting groove is opened on the back of the rack. The inner wall of the limiting groove is slidably connected to the outer surface of the limiting strip.

7. The fully recycled PVC foam board extrusion mold with a flow-diverting structure according to claim 2, characterized in that: The support component (48) includes a support plate and a rectangular groove. The rectangular groove is located on the right side of the mounting frame (41). One end of the support plate passes through the rectangular groove and is fixedly connected to the right side of the protective cover (47).

8. The fully recycled PVC foam board extrusion mold with a flow-diverting structure according to claim 2, characterized in that: The feeding component (49) includes a mounting platform and an electric push rod. The mounting platform is fixedly installed on the bottom of the mounting frame (41), and the electric push rod is fixedly installed on the mounting platform. The telescopic end of the electric push rod is fixedly connected to the right side of the protective cover (47).

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