Discharging die for screw extruder

Abstract

The utility model relates to the technical field of screw extruders, in particular to a discharging die for a screw extruder, which is characterized in that a working cavity is formed in a machine body, a screw is arranged in the working cavity, a driving motor is arranged beside the machine body, a feeding box is arranged on the surface of the machine body, and a limiting component is arranged on the surface of the feeding box; a side square frame is fixed to the side face of the feeding box, a guide hole is formed in the side square frame, a supporting spring and a moving block are arranged in the guide hole, a filter plate is arranged in the feeding box, a side square block is fixed to the surface of the filter plate, a guide rod is fixed to the surface of the side square block, and a limiting hole and a filter cavity are formed in the surface of the filter plate. Filtering holes are formed in the surface of the filtering cavity; the device has the beneficial effects that the filter plate is designed to be of a detachable structure, the filter plate can be easily pulled out and inserted through the grip, the fixing piece, the limiting spring, the limiting rod and other parts of the limiting assembly, regular cleaning or replacement is facilitated, and it is ensured that the filtering effect is continuous and effective.

Description

Technical Field

[0001] The utility model relates to the technical field of screw extruders, in particular to a discharging die for a screw extruder. Background Art

[0002] The screw extruder relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the material, and then form it through a die. Plastic extruders can be basically classified into twin-screw extruders, single-screw extruders, and the less common multi-screw extruders and screwless extruders.

[0003] In the prior art, the screw extruder filter device is placed inside the feed box. The filter device has a cylindrical frame with elliptical through holes. The through holes have filter screens matching the through holes. The added raw materials are filtered using the filter device.

[0004] However, most of the traditional filter devices for screw extruders are integrated with the feed box. After long-term use, the filter device needs to be inspected and maintained. The integrated structure makes the operation more cumbersome and reduces practicality. Therefore, the utility model proposes a discharge mold for a screw extruder to solve the above problem. Utility Model Content

[0005] The utility model aims to provide a discharging die for a screw extruder to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a discharging die for a screw extruder, the discharging die for the screw extruder comprising: a body, a working chamber is provided inside the body, a screw is provided in the working chamber, a driving motor is provided beside the body, a feed box is provided on the surface of the body, a limiting assembly is provided on the surface of the feed box, a side frame is fixed on the side of the feed box, a guide hole is provided inside the side frame, a support spring and a moving block are provided in the guide hole, and a filter plate is provided inside the feed box;

[0007] The filter plate has side blocks fixed on its surface, guide rods fixed on the surface of the side blocks, a limit hole and a filter cavity are provided on the surface of the filter plate, and a filter hole is provided on the surface of the filter cavity.

[0008] Preferably, a support frame is fixed on the surface of the machine body, a driving motor is arranged on a base, and an output end of the driving motor is connected to a screw rod through a coupling.

[0009] Preferably, the feed box is fixed to the surface of the machine body by bolts, a feed port is provided at the upper end of the feed box, the limit assembly includes a firmware, a limit spring, a limit rod and a limit block, the limit block is fixed to the surface of the feed box, a through hole is provided on the surface of the limit block, the outer wall of the limit rod and the inner wall of the through hole are slidably connected, and the limit rod can be inserted into the limit hole.

[0010] Preferably, a fixing is fixed on the end face of the limiting rod, a limiting spring is sleeved on the surface of the limiting rod, one end of the limiting spring is fixedly connected to the fixing, the other end of the limiting spring is fixedly connected to the limiting block, a handle is fixed on the surface of the fixing, an inner groove is provided on the surface of the feed box, and the fixing and the inner groove are slidably connected.

[0011] Preferably, side sliding blocks are fixed on both sides of the filter plate, a side sliding groove is provided inside the feed box, the side sliding groove and the side sliding block are slidably connected, and the guide rod and the guide hole are slidably connected.

[0012] Preferably, a plurality of filter holes are provided, and the plurality of filter holes are distributed in a matrix on the surface of the filter cavity. A handle is fixed on the surface of the filter plate, and an anti-slip pattern is provided inside the handle.

[0013] Preferably, the support spring and the moving block are located at the bottom of the guide hole, one end of the support spring is fixedly connected to the side frame, and the other end of the support spring is fixedly connected to the moving block, the moving block is disc-shaped, and the moving block and the guide hole are slidably connected.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a discharging die for a screw extruder. The filter plate of the device is designed as a detachable structure. The filter plate can be easily pulled out and inserted through the handle, the fixing, the limit spring and the limit rod of the limit assembly, so that it is convenient to clean or replace the filter plate regularly to ensure the continuous and effective filtering effect. In this way, the problem that most of the traditional filter devices for screw extruders are integrated with the feed box and need to be inspected and maintained after long-term use, and the integrated structure makes the operation more complicated and reduces the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a cross-sectional view of the structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the filter plate of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the moving block and the supporting spring of the utility model;

[0020] Figure 5 for Figure 1 A magnified view of the structure in the middle.

[0021] In the figure: 1, support frame; 2, machine body; 3, base; 4, driving motor; 5, side frame; 6, feed box; 7, feed port; 8, inner groove; 9, working chamber; 10, screw; 11, side slide; 12, support spring; 13, moving block; 14, guide rod; 15, side block; 16, handle; 17, anti-slip pattern; 18, limit hole; 19, filter plate; 20, filter hole; 21, filter chamber; 22, side slider;

[0022] 23. handle; 24. limit spring; 25. through hole; 26. limit block; 27. limit rod; 28. fastener;

[0023] 29. Guide hole. DETAILED DESCRIPTION

[0024] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] See also Figures 1 to 5 The utility model provides a technical solution: a discharging die for a screw extruder, the discharging die for the screw extruder comprising: a body 2, a working chamber 9 is provided inside the body 2, a screw 10 is provided in the working chamber 9, a driving motor 4 is provided beside the body 2, a feed box 6 is provided on the surface of the body 2, a limiting assembly is provided on the surface of the feed box 6, a side frame 5 is fixed on the side of the feed box 6, a guide hole is provided inside the side frame 5, a support spring 12 and a moving block 13 are provided in the guide hole, and a filter plate 19 is provided inside the feed box 6;

[0027] A filter plate 19, a side block 15 is fixed on the surface of the filter plate 19, a guide rod 14 is fixed on the surface of the side block 15, a limit hole 18 and a filter cavity 21 are provided on the surface of the filter plate 19, a filter hole 20 is provided on the surface of the filter cavity 21, a feed box 6 is fixed to the surface of the machine body 2 by bolts, a feed port 7 is provided at the upper end of the feed box 6, a limit assembly includes a fixing 28, a limit spring 24, a limit rod 27 and a limit block 26, the limit block 26 is fixed to the surface of the feed box 6, a through hole 25 is provided on the surface of the limit block 26, an outer wall of the limit rod 27 and an inner wall of the through hole 25 are slidably connected, and the limit rod 27 can be inserted into the limit hole 18;

[0028] When in use, the filter plate 19 of the device is designed as a detachable structure. The filter plate 19 can be easily pulled out and inserted through the handle 23, the fixing 28, the limit spring 24 and the limit rod 27 of the limit assembly, which is convenient for regular cleaning or replacement to ensure that the filtering effect is continuously effective.

[0029] Embodiment 2

[0030] On the basis of the first embodiment, a fixing device 28 is fixed to the end surface of the limiting rod 27, a limiting spring 24 is sleeved on the surface of the limiting rod 27, one end of the limiting spring 24 is fixedly connected to the fixing device 28, and the other end of the limiting spring 24 is fixedly connected to the limiting block 26, a handle 23 is fixed to the surface of the fixing device 28, an inner groove 8 is provided on the surface of the feed box 6, and the fixing device 28 and the inner groove 8 are slidably connected;

[0031] Side sliders 22 are fixed on both sides of the filter plate 19, a side slide groove 11 is provided inside the feed box 6, the side slide groove 11 and the side slide groove 22 are slidably connected, the guide rod 14 and the guide hole 29 are slidably connected, a plurality of filter holes 20 are provided, and the plurality of filter holes 20 are distributed in a matrix on the surface of the filter cavity 21, a handle 16 is fixed on the surface of the filter plate 19, and an anti-slip pattern 17 is provided inside the handle 16;

[0032] When in use, the filter plate 19 is placed inside the feed box 6, and the side block 15 and the guide rod 14 are fixed on its surface. The side block 15 is slidably connected to the side slide groove 11 inside the side frame 5 to ensure that the filter plate 19 slides smoothly. The guide rod 14 cooperates with the guide hole 29 to further ensure the stability of the sliding process. The surface of the filter plate 19 is provided with a limit hole 18, which cooperates with the limit rod 27 in the limit assembly, and realizes quick locking and unlocking through the limit spring 24 and the firmware 28, which is convenient for the disassembly, assembly and maintenance of the filter plate 19. A handle 16 is also fixed on the surface of the filter plate 19, and an anti-slip texture 17 is provided inside to facilitate the operator to hold and control the movement of the filter plate 19.

[0033] Embodiment 3

[0034] On the basis of the second embodiment, the support spring 12 and the moving block 13 are located at the bottom of the guide hole 29, one end of the support spring 12 is fixedly connected to the side frame 5, and the other end of the support spring 12 is fixedly connected to the moving block 13, the moving block 13 is disc-shaped, and the moving block 13 and the guide hole 29 are slidably connected;

[0035] When in use, the support spring 12 and the moving block 13 in the side frame 5 constitute a dynamic support system, which can absorb the vibration and impact generated during the filtration process, protect the equipment and extend its service life. At the same time, when the guide rod 14 is inserted into the guide hole 29, the guide rod 14 will resist the moving block 13, so that the support spring 12 is compressed. The support spring 12 will give the guide rod 14 a rebound force, cooperate with the limit assembly to limit the position, and improve the stability of the filter plate 19.

[0036] In actual use, the filter plate 19 of the device is designed as a detachable structure. Through the handle 23, the fixing 28, the limit spring 24 and the limit rod 27 of the limit assembly, the filter plate 19 can be easily pulled out and inserted, which is convenient for regular cleaning or replacement to ensure that the filtering effect is continuously effective. By manually turning the handle 23, the limit rod 27 is pulled out of the limit hole 18, and under the rebound action of the support spring 12, the handle 16 is turned at the same time, so that the filter plate 19 can be pulled out of the feed box 6, which is convenient for inspection and maintenance. This avoids the problem that most traditional screw extruder filter devices are integrated with the feed box 6. After long-term use, the filter device needs to be inspected and maintained. The integrated structure makes the operation more cumbersome and reduces the practicality.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A discharge die for a screw extruder, characterized in that: The discharge die for the screw extruder comprises: a body (2), a working chamber (9) is provided inside the body (2), a screw (10) is provided inside the working chamber (9), a driving motor (4) is provided next to the body (2), a feed box (6) is provided on the surface of the body (2), a limit position assembly is provided on the surface of the feed box (6), a side frame (5) is fixed on the side of the feed box (6), a guide hole is provided inside the side frame (5), a support spring (12) and a moving block (13) are provided in the guide hole, and a filter plate (19) is provided inside the feed box (6); A filter plate (19) is provided, a side block (15) is fixed on the surface of the filter plate (19), a guide rod (14) is fixed on the surface of the side block (15), a limiting hole (18) and a filter cavity (21) are provided on the surface of the filter plate (19), and a filter hole (20) is provided on the surface of the filter cavity (21).

2. A discharge die for a screw extruder according to claim 1, characterized in that: A support frame (1) is fixed on the surface of the machine body (2); a drive motor (4) is arranged on a base (3); and an output end of the drive motor (4) is connected to a screw rod (10) via a coupling.

3. A discharge die for a screw extruder according to claim 1, characterized in that: The feed box (6) is fixed to the surface of the machine body (2) by bolts, and a feed port (7) is provided at the upper end of the feed box (6). The limiting assembly comprises a fixing member (28), a limiting spring (24), a limiting rod (27) and a limiting block (26). The limiting block (26) is fixed to the surface of the feed box (6), and a through hole (25) is provided on the surface of the limiting block (26). The outer wall of the limiting rod (27) and the inner wall of the through hole (25) are slidably connected, and the limiting rod (27) can be inserted into the limiting hole (18).

4. A discharge die for a screw extruder according to claim 3, characterized in that: A fixing piece (28) is fixed on the end surface of the limiting rod (27), a limiting spring (24) is sleeved on the surface of the limiting rod (27), one end of the limiting spring (24) is fixedly connected to the fixing piece (28), the other end of the limiting spring (24) is fixedly connected to the limiting block (26), a handle (23) is fixed on the surface of the fixing piece (28), an inner groove (8) is provided on the surface of the feed box (6), and the fixing piece (28) and the inner groove (8) are slidably connected.

5. A discharge die for a screw extruder according to claim 1, characterized in that: Side sliding blocks (22) are fixed on both sides of the filter plate (19), a side sliding groove (11) is provided inside the feed box (6), the side sliding groove (11) and the side sliding block (22) are slidably connected, and the guide rod (14) and the guide hole (29) are slidably connected.

6. A discharge die for a screw extruder according to claim 1, characterized in that: A plurality of filter holes (20) are provided, and the plurality of filter holes (20) are distributed in a matrix on the surface of the filter cavity (21). A handle (16) is fixed on the surface of the filter plate (19), and an anti-slip pattern (17) is provided inside the handle (16).

7. A discharge die for a screw extruder according to claim 1, characterized in that: The support spring (12) and the moving block (13) are located at the bottom of the guide hole (29); one end of the support spring (12) is fixedly connected to the side frame (5); the other end of the support spring (12) is fixedly connected to the moving block (13); the moving block (13) is disc-shaped; and the moving block (13) and the guide hole (29) are slidably connected.

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