Plastic plate extrusion die

Abstract

The utility model relates to the technical field of extrusion dies, in particular to a plastic plate extrusion die which comprises a die frame and a die holder, and die cavities are formed in the upper end and the lower end of the die holder. Supporting shafts are fixed to the left end and the right end of the die holder, the ends of the supporting shafts are rotationally connected to the inner side wall of the die frame, die plates are arranged in the die cavities, a hot extrusion plate is arranged above the die holder, a material receiving concave box is arranged below the die holder, and a turnover braking assembly is arranged on the right side of the die holder; return springs are connected to the bottom ends in the mold cavities, the ends of the return springs are connected with the inner sides of the adjacent mold plates, L-shaped supporting plates are fixed to the left ends and the right ends of the inner sides of the mold plates, through openings are formed in the upper ends and the lower ends of the left side and the right side of the mold base, and the through openings communicate with the adjacent mold cavities; according to the utility model, the next die cavity can be conveniently and quickly replaced to extrude and process a plastic plate, so that the processing efficiency is favorably improved, and the discharging is quick, automatic and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion molds, in particular to a plastic plate extrusion mold. Background Art

[0002] Extrusion dies are a type of forming die, but they produce material through extrusion. They are widely used in aluminum profiles and are also used in plastic parts. They are located at the front end of an extruder, creating pipes and other profiles. Simply put, a die is a tool used to shape an object. This tool consists of various parts, and different dies are made up of different parts. They primarily achieve the desired shape by changing the physical state of the material being formed. The advent of plastic sheet extrusion dies has greatly facilitated sheet manufacturing.

[0003] For example, Chinese patent authorization announcement No. CN220499702U discloses a plastic sheet extrusion mold, which relates to the field of extrusion mold technology, including a device body, the device body including a support plate, an extrusion mold, a temperature control component, an auxiliary component and a workbench, the surface of the workbench is provided with a support plate, the support plate is C-shaped, and the bottom of the support plate is provided with an auxiliary component, the auxiliary component including a hydraulic cylinder, a hydraulic rod, a push plate, a collecting trough, a first electric telescopic rod, a pressure plate, a second electric telescopic rod and a fixed plate, a hydraulic cylinder is provided on one side of the outer wall of the extrusion mold, a hydraulic rod is fixedly sleeved on one side of the hydraulic cylinder, a push plate is fixedly connected to one side of the hydraulic rod, and a collecting trough is fixedly provided on one side of the outer wall of the extrusion mold; the utility model makes the plastic sheet extrusion mold fully automated during use through the setting of the auxiliary components, without the need for manual operation, making it more convenient to use, thereby further improving the practicality of the plastic sheet extrusion mold.

[0004] The defect of the existing technology is that when the plastic plate is extruded, it is difficult to quickly extrude the next plastic plate after the plastic plate is extruded and unloaded, resulting in the processing efficiency needing to be improved. In addition, there is a problem of inconvenience in unloading the plastic plate during the unloading process. Therefore, how to unload the plastic plate more quickly and conveniently needs to be improved. Utility Model Content

[0005] The utility model provides a plastic plate extrusion die, which is conducive to quickly extruding the next plastic plate and better improving the processing efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A plastic plate extrusion die comprises a die frame and a die base, wherein the upper and lower ends of the die base are both provided with die cavities;

[0008] Support shafts are fixed to the left and right ends of the die base, and the ends of the support shafts are rotatably connected to the inner side walls of the die frame. A template is provided in the die cavity, a hot extrusion plate is provided above the die base, and a material receiving concave box is provided below the die base. A flip brake assembly is provided on the right side of the die base;

[0009] The bottom end of the mold cavity is connected to a return spring, and the end of the return spring is connected to the inner side of the adjacent template. The left and right ends of the inner side of the template are fixed with L-shaped support plates. The upper and lower ends of the left and right sides of the mold base are provided with through openings, and the through openings are connected to the adjacent mold cavities. The L-shaped support plates extend out of the mold base through the through openings. The bottom ends of the L-shaped support plates are connected to magnetic plates. Support plates fixed to the inner wall of the mold frame are provided below the support shaft. The upper ends of the support plates are connected to electromagnets. The electromagnets correspond to the upper and lower magnetic plates on the same side. Switch opening and closing components are provided on the left and right sides of the mold base.

[0010] Furthermore, a hydraulic cylinder is fixed at the top end of the mold frame, the upper end of the hot extrusion plate is connected to the power end of the hydraulic cylinder, and the hot extrusion plate is adapted to the mold cavity.

[0011] Furthermore, the flip brake assembly includes a brake motor, a main gear and a sub gear. The brake motor is fixed to the inner wall of the mold frame, the main gear is connected to the power end of the brake motor, and the sub gear is fixedly sleeved on the periphery of the adjacent support shaft, and the sub gear is engaged with the main gear.

[0012] Furthermore, telescopic rods are fixed to the left and right ends of the inner side of the template, and the ends of the telescopic rods are fixed to the bottom end of the mold cavity.

[0013] Furthermore, the switch opening and closing components include a main switch, a proximity switch and two proximity plates, and the main switches are installed at the lower end of the support plate.

[0014] Furthermore, the proximity switches are all installed on the upper end of the support plate, the proximity plates are all connected to the upper and lower ends of the support shaft, the proximity switches are all corresponding to adjacent proximity plates, and the main switch, proximity switch and electromagnet are connected in series.

[0015] Beneficial effects of the utility model:

[0016] 1. By setting mold cavities at the upper and lower ends of the mold base, after the plastic sheet in the upper mold cavity is extruded and formed, the mold base is turned upside down by the operation of the rotating brake assembly, so that the next mold cavity can be easily and quickly replaced to extrude the plastic sheet, which is beneficial to improve processing efficiency;

[0017] 2. The electromagnet automatically adsorbs the magnetic plate, thereby automatically driving the template to move out of the mold cavity. Therefore, the plastic plate in the mold cavity can be automatically pushed out and unloaded through the movement of the template. The unloaded plastic plate is collected by the receiving concave box. The unloading is fast, automatic and convenient. In addition, the template can be automatically reset by the rebound force of the rebound spring, so that the plastic plate can continue to be extruded through the extrusion die, and the operation is automatic and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall internal structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the overall unloading working structure of the utility model.

[0021] Description of reference numerals:

[0022] Mold frame 1, mold base 2, mold cavity 3, hydraulic cylinder 4, hot extrusion plate 5, template 6, return spring 7, telescopic rod 8, through port 9, L-shaped support plate 10, support plate 11, electromagnet 12, main switch 13, proximity switch 14, support shaft 15, proximity plate 16, material receiving concave box 17, brake motor 18, main gear 19, sub-gear 20, magnetic plate 21. DETAILED DESCRIPTION

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0024] like Figure 1-3 As shown, in this embodiment, it includes a mold frame 1 and a mold base 2, and the mold base 2 has a mold cavity 3 at the upper and lower ends. The left and right ends of the mold base 2 are fixed with support shafts 15, and the ends of the support shafts 15 are rotatably connected to the inner wall of the mold frame 1. A template 6 is provided in the mold cavity 3, and a hot extrusion plate 5 is provided above the mold base 2, and a material receiving concave box 17 is provided below the mold base 2. A flip brake assembly is provided on the right side of the mold base 2, and the flip brake assembly includes a brake motor 18, a main gear 19 and a sub gear 20. The brake motor 18 is fixed to the inner wall of the mold frame 1, and the main gear 19 is connected to the power end of the brake motor 18. The sub gear 20 is fixedly sleeved on the periphery of the adjacent support shaft 15, and the sub gear 20 is meshed with the main gear 19. A hydraulic cylinder 4 is fixed on the top end of the mold frame 1, and the upper end of the hot extrusion plate 5 is connected to the power end of the hydraulic cylinder 4, and the hot extrusion plate 5 is adapted to the mold cavity 3.

[0025] By arranging mold cavities 3 at the upper and lower ends of the mold base 2, when the plastic plate is extruded through the upper mold cavity 3, the hydraulic cylinder 4 drives the hot extrusion plate 5 to move downward into the upper mold cavity 3, thereby extruding the plastic plate in the mold cavity 3, and then the hot extrusion plate 5 is driven to move upward and reset by the contraction of the hydraulic cylinder 4. After the plastic plate in the upper mold cavity 3 is extruded and formed, the brake motor 18 drives the main gear 19, the sub-gear 20, the support shaft 15 and the mold base 2 to rotate 180 degrees and stop. Therefore, the mold base 2 is driven to flip up and down by the operation of the rotating brake assembly, so that the next mold cavity 3 can be replaced quickly and conveniently for extrusion of the plastic plate, which is beneficial to improving processing efficiency.

[0026] like Figure 3 As shown, in this embodiment, the bottom end of the mold cavity 3 is connected to a return spring 7, and the end of the return spring 7 is connected to the inner side of the adjacent template 6. The left and right ends of the inner side of the template 6 are fixed with L-shaped support plates 10. The upper and lower ends of the left and right sides of the mold base 2 are provided with through openings 9, and the through openings 9 are connected to the adjacent mold cavity 3. The L-shaped support plates 10 extend out of the mold base 2 through the through openings 9. The bottom ends of the L-shaped support plates 10 are connected to the magnetic plates 21. The support plates 11 fixed to the inner side wall of the mold frame 1 are provided below the support shaft 15. The upper ends of the support plates 11 are connected There is an electromagnet 12, and the electromagnets 12 correspond to the magnetic attraction plates 21 on the same side up and down. The left and right sides of the mold base 2 are provided with switch opening and closing components, and the switch opening and closing components include a main switch 13, a proximity switch 14 and two proximity plates 16. The main switch 13 is installed at the lower end of the support plate 11, and the proximity switches 14 are installed at the upper end of the support plate 11. The proximity plates 16 are connected to the upper and lower ends of the support shaft 15. The proximity switches 14 correspond to the adjacent proximity plates 16 up and down, and the main switch 13, the proximity switch 14 and the electromagnet 12 are connected in series.

[0027] When the plastic plate in the lower mold cavity 3 needs to be unloaded, under the premise that the main switch 13 is connected to the external power supply, the proximity plate 16 at the lower end of the support shaft 15 is just sensed by the proximity switch 14. After the proximity switch 14 is started, the electromagnet 12 is energized and works. The electromagnet 12 attracts the magnetic plate 21 above it by magnetic force. The magnetic plate 21 will drive the corresponding L-shaped support plate 10 to move downward. At this time, the L-shaped support plate 10 will push the corresponding template 6 downward, and the template 6 will stretch the return spring 7. Therefore, the plastic plate in the mold cavity 3 can be automatically pushed out and unloaded through the movement of the template 6. The unloading is fast, automatic and convenient. The plastic plate after unloading is collected by the material receiving concave box 17, which is conducive to achieving the effect of automatic unloading and collection.

[0028] like Figure 2 As shown, in this embodiment, the bottom end of the mold cavity 3 is connected to a return spring 7, and the ends of the return spring 7 are connected to the inner side of the adjacent template 6.

[0029] When the mold base 2 continues to flip and the proximity switch 14 cannot sense the position of the proximity plate 16, the proximity switch 14 controls the electromagnet 12 to automatically cut off the power, and the electromagnet 12 no longer attracts the magnetic plate 21, so the template 6 can be automatically reset by the rebound force of the return spring 7, so that the plastic plate can continue to be extruded through the extrusion mold, and the operation is automatic and convenient.

[0030] like Figure 3 As shown, in this embodiment, telescopic rods 8 are fixed to the left and right ends of the inner side of the template 6 , and the ends of the telescopic rods 8 are fixed to the bottom end of the mold cavity 3 .

[0031] When the template 6 moves, the telescopic rod 8 is stretched. Therefore, the extension and retraction of the telescopic rod 8 can ensure the balance and stability of the template 6 during movement, thereby preventing the template 6 from tilting in the mold cavity 3.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[0033] The above embodiments are preferred implementation schemes of the present invention. In addition, other implementation schemes are also included. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A plastic sheet extrusion die, comprising a die frame (1) and a die base (2), wherein the die base (2) has a die cavity (3) at both the upper and lower ends, and is characterized in that: Support shafts (15) are fixed to the left and right ends of the die base (2), and the ends of the support shafts (15) are rotatably connected to the inner side wall of the die frame (1). A template (6) is provided in the die cavity (3). A hot extrusion plate (5) is provided above the die base (2), and a material receiving concave box (17) is provided below the die base (2). A turnover brake assembly is provided on the right side of the die base (2); The bottom end of the mold cavity (3) is connected to a return spring (7), and the end of the return spring (7) is connected to the inner side of the adjacent template (6). The left and right ends of the inner side of the template (6) are fixed with L-shaped support plates (10). The upper and lower ends of the left and right sides of the mold base (2) are provided with through openings (9), and the through openings (9) are communicated with the adjacent mold cavity (3). The L-shaped support plates (10) extend out of the mold base (2) through the through openings (9). The bottom end of the L-shaped support plates (10) is connected to a magnetic attraction plate (21). A support plate (11) fixed to the inner side wall of the mold frame (1) is provided below the support shaft (15). The upper end of the support plate (11) is connected to an electromagnet (12). The electromagnet (12) corresponds to the magnetic attraction plate (21) on the same side. Switch opening and closing components are provided on the left and right sides of the mold base (2).

2. A plastic sheet extrusion die according to claim 1, characterized in that: A hydraulic cylinder (4) is fixed at the top end of the mold frame (1), the upper end of the hot extrusion plate (5) is connected to the power end of the hydraulic cylinder (4), and the hot extrusion plate (5) is adapted to the mold cavity (3).

3. A plastic sheet extrusion die according to claim 1, characterized in that: The overturning brake assembly includes a brake motor (18), a main gear (19) and a sub-gear (20), wherein the brake motor (18) is fixed to the inner wall of the mold frame (1), the main gear (19) is connected to the power end of the brake motor (18), and the sub-gear (20) is fixedly sleeved on the outer periphery of the adjacent support shaft (15), and the sub-gear (20) is meshed with the main gear (19).

4. A plastic sheet extrusion die according to claim 1, characterized in that: Telescopic rods (8) are fixed to the left and right ends of the inner side of the template (6), and the ends of the telescopic rods (8) are fixed to the inner bottom end of the mold cavity (3).

5. The plastic sheet extrusion die according to claim 1, wherein: The switch opening and closing components each include a main switch (13), a proximity switch (14) and two proximity plates (16); the main switch (13) is installed at the lower end of the support plate (11).

6. A plastic sheet extrusion die according to claim 5, characterized in that: The proximity switches (14) are all installed on the upper end of the support plate (11), the proximity plates (16) are all connected to the upper and lower ends of the support shaft (15), the proximity switches (14) are all corresponding to the adjacent proximity plates (16) in the upper and lower directions, and the main switch (13), the proximity switches (14) and the electromagnet (12) are connected in series.

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