A kneader for polymer processing

Abstract

This application belongs to the field of kneading machine technology and discloses a kneading machine for polymer processing, including a mounting frame fixed to the kneading machine body, a kneading cavity fixed to the mounting frame, and a sealing plate disposed on the kneading cavity for closing the discharge port of the kneading cavity. The sealing plate is provided with a stirring paddle for processing the polymer material in the kneading cavity. A transmission assembly for driving the stirring paddle to rotate is disposed outside the kneading cavity. A fixing plate is fixed to the bottom of the sealing plate. Limiting blocks and moving blocks are disposed on the side walls of both sides of the fixing plate. A control assembly for driving the moving blocks to clamp the fixing plate is disposed on the limiting blocks. A drive mechanism is disposed on the mounting frame for driving the limiting blocks and moving blocks to move axially along the stirring paddle and driving the sealing plate to press against the opening of the kneading cavity. This application changes the conventional method of fixing the connecting plate and two stirring paddles with bolts, simplifying the operation steps.

Description

Technical Field

[0001] This utility model relates to the field of kneading machine technology, and in particular to a kneading machine for polymer processing. Background Technology

[0002] A kneader is a specialized piece of equipment for mixing and processing high-viscosity, elastic-plastic materials. Its core function is to fully mix, knead, plasticize, or homogenize materials in various forms (solid, liquid, semi-fluid) through mechanical force (extrusion, stirring) to ultimately form a uniform paste, syrup, or plastic solid material. It can be applied to materials with polymer properties and solves the technical pain point of being difficult to adapt to the high viscosity, high elasticity, and heat sensitivity of polymers.

[0003] In the prior art, kneaders typically include two mixing blades for mixing materials. The two mixing blades are connected by a connecting plate fixed to the kneader. The connecting plate is usually fixed to the kneader with bolts. After the materials are mixed, the operator needs to unscrew multiple bolts and then remove the connecting plate and the mixing blades in order to take out the kneaded polymer material from the kneading chamber. The operation is quite cumbersome. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a kneading machine for polymer processing.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a mounting frame fixed to the kneader body, a kneading cavity fixed to the mounting frame, and a sealing plate disposed on the kneading cavity for closing the outlet of the kneading cavity. The sealing plate is provided with a stirring paddle for processing the polymer material inside the kneading cavity. The kneader body is provided with a transmission assembly for driving the stirring paddle to rotate. A fixing plate is fixed to the bottom of the sealing plate. Limiting blocks and moving blocks are disposed on the side walls of both sides of the fixing plate. A control assembly is disposed on the limiting block for driving the moving block to move so that the moving block cooperates with the limiting block and clamps or releases the fixing plate. A sliding block is fixed to the bottom of the limiting block. A drive mechanism is disposed on the mounting frame for driving the sliding block to move axially along the stirring paddle.

[0006] By adopting the above technical solution, when workers need to knead polymer materials, they first pour the polymer material into the kneading chamber through the feed inlet of the kneader. The transmission component drives the mixing paddle to knead the polymer material. After mixing, the worker drives the moving block to engage with the limiting block and clamp the fixing plate. Then, the drive mechanism moves the sliding block away from the kneading chamber, causing the sealing plate to detach from the mixing paddle. After detachment, the worker can collect the processed polymer material from the kneading chamber. After collection, the process is reversed to ensure the sealing plate is pressed against the outlet of the kneading chamber. This application changes the traditional method of fixing the connecting plate and two mixing paddles with bolts, simplifying the operation and improving the efficiency of removing the kneaded material and cleaning the kneading chamber.

[0007] Furthermore, the driving mechanism includes a driving assembly, which includes a placement plate fixed to the mounting bracket. The mounting plate is hinged to the side of the placement plate away from the stirring paddle. The placement plate is provided with a fixing assembly to prevent the mounting plate from rotating along the hinge axis. The driving assembly also includes two fixing blocks fixed to the mounting plate, which are symmetrically distributed. The driving assembly also includes a lead screw rotatably mounted between the two fixing blocks, a limiting rod fixed between the two fixing blocks and parallel to the lead screw, and a driving motor fixed to the side wall of the fixing block and driving the lead screw to rotate. The limiting rod passes through a sliding block and slides with the sliding block. The sliding block is slidably sleeved on the lead screw and threadedly connected to the lead screw. The lead screw passes through the side of the fixing block near the driving motor and is fixed to the output end of the driving motor. The upper surface of the sliding block is fixed to the lower surface of the limiting block, and the upper surface of the sliding block abuts against the lower surface of the moving block.

[0008] By adopting the above technical solution, after the agitator has finished agitating the polymer material, the operator needs to start the drive motor. The drive motor operates and drives the screw fixed to it to rotate. Since the sliding block is threadedly connected to the screw and is limited by the limiting rod, the limiting block and the moving block clamp the fixed plate through the control component, thereby causing the sliding block to move the limiting block and the fixed plate. The limiting block and the fixed plate then cause the sealing plate and the agitator to disengage from the kneading chamber. After disengagement, the operator needs to adjust the fixing component to release the fixing of the mounting plate. Then, the operator needs to rotate the mounting plate, so that the sealing plate and the agitator rotate with the mounting plate, freeing up space on the side of the kneading chamber away from the kneader body. This facilitates the operator to collect the processed polymer material in the kneading chamber or clean the inner wall of the kneading chamber.

[0009] Furthermore, the fixing components are provided in two sets, each set of fixing components including a fixing ring fixed to the mounting plate, a limiting ring fixed to the placement plate, and an L-shaped insert plate that slides within the limiting ring and is inserted into the fixing ring.

[0010] By adopting the above technical solution, the staff pushes the two L-shaped inserts, thereby causing the lateral section of the L-shaped inserts to break free from the restriction of the fixing ring, which in turn causes the mounting plate to rotate along the hinge axis, thereby causing the sealing plate and the stirring paddle to rotate with the mounting plate.

[0011] Furthermore, a push plate is fixed to the top of the vertical section of both L-shaped inserts.

[0012] By adopting the above technical solution, the push plate design allows subsequent personnel to push the two L-shaped inserts simultaneously, simplifying the operation steps.

[0013] Furthermore, the placement plate is provided with elastic components. There are two sets of elastic components, each corresponding to a fixed component. Each set of elastic components includes a limiting plate fixed to the placement plate and a spring fixed to the limiting plate near the fixing ring. The side of the spring near the fixing ring is fixed to the side wall of the L-shaped insert plate.

[0014] By adopting the above technical solution and setting the spring, the L-shaped insert plate can be quickly reset.

[0015] Furthermore, the control component includes a screw rotatably mounted on the limiting block, a turntable fixed to the side of the screw away from the limiting block, and a rotating rod fixed to the turntable. The moving block is provided with a threaded hole that is threadedly connected to the screw.

[0016] By adopting the above technical solution, when installing or removing the sealing plate, the operator needs to rotate the turntable by rotating the rotating rod. The turntable drives the screw to rotate. Since the moving block is threadedly connected to the screw and the bottom of the moving block abuts against the upper surface of the sliding block, the moving block moves towards or away from the limit block, thus completing the clamping or loosening action of the fixing plate.

[0017] Furthermore, the movable block is provided with multiple limiting holes arranged in a circular array, and the turntable is provided with through holes of the same number and position as the limiting holes, and a plug rod is provided in the through hole to be inserted into the limiting hole.

[0018] By adopting the above technical solution, when the limiting block and the moving block clamp the fixed plate, the worker inserts the rod through the through hole and abuts the bottom of the rod against the inner bottom wall of the limiting hole, thus completing the limiting of the turntable and ensuring the stability of the sealing plate during use.

[0019] Furthermore, a first rubber pad is attached and fixed to the side of the limiting block near the fixed plate, and a second rubber pad is attached and fixed to the side of the moving block near the fixed plate.

[0020] By adopting the above technical solution, both the first rubber pad and the second rubber pad are made of rubber, which has a certain degree of flexibility and resilience, increasing the friction between the limiting block, the moving block and the fixing plate, and further strengthening the fixing effect.

[0021] In summary, this utility model has the following beneficial effects: When the operator needs to knead the polymer material, the polymer material is first poured into the kneading chamber through the feed port of the kneader. The stirring paddle is driven by the control transmission component to knead the polymer material. After the stirring is completed, the operator drives the moving block to move through the control component, so that the moving block cooperates with the limiting block and clamps the fixed plate. Then, the driving mechanism is controlled to drive the sliding block to move away from the kneading chamber, so that the sealing plate and the stirring paddle are separated from the kneading chamber. After separation, the operator can collect the processed polymer material in the kneading chamber. After collection, when the operator needs to close the outlet of the kneading chamber, the drive motor is started in reverse, so that the lead screw drives the sliding block to move towards the kneading chamber until the sealing plate is pressed against the edge of the outlet of the kneading chamber, thus achieving a seal. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0023] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 This is a structural diagram after the kneader has been removed;

[0025] Figure 4 This is a schematic diagram illustrating the structure of the stirring paddle and the sealing plate in an embodiment of this utility model;

[0026] In the diagram: 1. Kneader body; 11. Mounting frame; 12. Condensation device; 13. Heating device; 2. Kneading chamber; 21. Sealing plate; 22. Stirring paddle; 23. Fixing plate; 24. Limiting block; 241. First rubber pad; 25. Moving block; 251. Second rubber pad; 252. Threaded hole; 253. Limiting hole; 26. Mounting plate; 27. Feed inlet; 3. Transmission assembly; 31. Main machine casing; 4. Control assembly; 41. Screw; 42. Turntable; 421. Through hole; 43. Rotating rod; 5. Drive mechanism; 51. Drive assembly; 511. Placement plate; 512. Fixing block; 513. Lead screw; 514. Sliding block; 515. Limiting rod; 516. Drive motor; 6. Fixing assembly; 61. Fixing ring; 62. Limiting ring; 63. L-shaped insert plate; 7. Push plate; 8. Elastic assembly; 81. Limiting plate; 82. Spring; 9. Insert rod. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] like Figure 1-4 As shown in the embodiment, this application discloses a kneader for polymer processing, including a mounting frame 11, a kneading chamber 2, a sealing plate 21, a stirring paddle 22, a transmission assembly 3, a fixing plate 23, a limiting block 24, a moving block 25, a control assembly 4, a sliding block 514, a drive mechanism 5, and a fixing assembly 6. The mounting frame 11 is fixed to the kneader body 1, and the kneading chamber 2 is fixed to the mounting frame 11. The sealing plate 21 is disposed on the kneading chamber 2 and is used to close the discharge port of the kneading chamber 2. The stirring paddle 22 is disposed on the sealing plate 21 and is used to process the polymer material in the kneading chamber 2. In this embodiment, the transmission assembly 3 is disposed in the kneader body and is used to drive the stirring paddle 22 to rotate. The fixing plate 23 is fixed to the bottom of the sealing plate 21, the limiting block 24 is disposed on the side walls on both sides of the fixing plate 23, the moving block 25 is disposed on the side walls on both sides of the fixing plate 23, and the sliding block 514 is fixed to the bottom of the limiting block 24. In this embodiment, the top of the kneading chamber 2 is provided with a feed inlet 27 communicating with it, and a condensing device 12 is provided on the top of the kneading chamber 2. A heating device 13 is provided on the side wall of the kneading chamber 2 (the condensing device 12 and the heating device 13 are prior art and will not be described in detail here). The polymer material in the kneading chamber 2 is heated by the heating device 13 to improve the kneading efficiency. During the heating process, the polymer material easily volatilizes. The volatilized gas comes into contact with the condensing device 12 and is liquefied, forming a circulation, thus ensuring the quality of the kneaded polymer material.

[0029] Control component 4 is mounted on limit block 24 and is used to drive moving block 25 to clamp fixed plate 23. Control component 4 includes screw 41, turntable 42, and rotating rod 43. Screw 41 is rotatably mounted on limit block 24, and turntable 42 is fixed to the side of screw 41 away from limit block 24. Rotating rod 43 is fixed to turntable 42. Moving block 25 has a threaded hole 252 that is threaded to screw 41. Moving block 25 has limit holes 253, and multiple limit holes 253 are arranged in a circular array. Turntable 42 has through holes 421, and the number of through holes 421 and limit holes 253 are equal and their positions correspond one-to-one. Insert rod 9 is provided in through hole 421, and insert rod 9 is engaged with limit hole 253.

[0030] The drive mechanism 5 is mounted on the mounting frame 11. The drive mechanism 5 drives the limiting block 24 and the moving block 25 to move axially along the stirring paddle 22 and drives the sealing plate 21 to press against the opening of the kneading cavity 2. The drive mechanism 5 includes a drive assembly 51, which includes a placement plate 511, a mounting plate 26, a fixing block 512, a lead screw 513, a limiting rod 515, and a drive motor 516. The placement plate 511 is fixed to the mounting frame 11, and the mounting plate 26 is hinged to the side of the placement plate 511 away from the stirring paddle 22. The fixing block 512 is fixed to the mounting plate 26, and there are two fixing blocks 512 symmetrically distributed. The lead screw 513 is rotatably mounted between the two fixing blocks 512, and a sliding block 514 is slidably sleeved on the lead screw 513 and threadedly connected to the lead screw 513. A limiting rod 515 is fixed between two fixed blocks 512 and parallel to the lead screw 513. The limiting rod 515 passes through the sliding block 514 and slides in engagement with the sliding block 514. A drive motor 516 is fixed to the side wall of the fixed block 512 and drives the lead screw 513 to rotate. The axis of the output shaft of the drive motor 516 coincides with the axis of the lead screw 513. In this embodiment, the lead screw 513 passes through the fixed block 512 near the drive motor 516 and is fixed to the output end of the drive motor 516. The upper surface of the sliding block 514 is fixed to the lower surface of the limiting block 24, and the upper surface of the sliding block 514 abuts against the lower surface of the moving block 25.

[0031] The fixing component 6 is disposed on the placement plate 511 and is used to prevent the mounting plate 26 from rotating along the hinge axis. There are two sets of fixing components 6, each set of fixing components 6 including a fixing ring 61, a limiting ring 62 and an L-shaped insert plate 63. The fixing ring 61 is fixed to the mounting plate 26, and the limiting ring 62 is fixed to the placement plate 511. The L-shaped insert plate 63 slides inside the limiting ring 62 and is inserted into the fixing ring 61. The cross-section of the L-shaped insert plate 63 is L-shaped.

[0032] When the operator needs to knead the polymer material, the polymer material is first poured into the kneading chamber 2 through the feed port 27 of the kneader. The stirring paddle 22 is driven by the control transmission component 3 to knead the polymer material. After the stirring is completed, the operator needs to rotate the turntable 42 through the rotating rod 43. The turntable 42 drives the screw 41 to rotate. Since the moving block 25 is threadedly connected to the screw 41 and the bottom of the moving block 25 abuts against the upper surface of the sliding block 514, the moving block 25 moves towards the direction of the limiting block 24, thus clamping the fixing plate 23. When the limiting block 24 and the moving block 25 clamp the fixing plate 23, the operator inserts the rod 9 through the through hole 421 and abuts the bottom of the rod 9 against the inner bottom wall of the limiting hole 253, thus limiting the turntable 42 and ensuring the stability of the sealing plate 21 during use. The operator needs to start the drive motor 516. The drive motor 516 works and drives the lead screw 513 fixed to it to rotate. Since the sliding block 514 is threadedly connected to the lead screw 513 and the sliding block 514 is restricted by the limiting rod 515, the limiting block 24 and the moving block 25 clamp the fixed plate 23 through the control component 4, so that the sliding block 514 drives the limiting block 24 and the fixed plate 23 to move. The limiting block 24 and the fixed plate 23 drive the sealing plate 21 and the stirring paddle 22 to disengage from the kneading chamber 2. After disengagement, the operator pushes the two L-shaped insert plates 63, so that the transverse section of the L-shaped insert plates 63 disengages from the restriction of the fixing ring 61, thereby causing the mounting plate 26 to rotate along the hinge axis. This causes the sealing plate 21 and the stirring paddle 22 to rotate with the mounting plate 26, freeing up space on the side of the kneading chamber 2 away from the kneader body, thus facilitating the operator to collect the processed polymer material in the kneading chamber 2 or clean the inner wall of the kneading chamber 2. After cleaning, the staff first pulls out the insert rod 9, and rotates the turntable 42 in the opposite direction by rotating the rod 43 to make the moving block 25 loosen the fixing plate 23. Then, the drive motor 516 is started in the opposite direction to make the sealing plate 21 approach the kneading cavity 2. Finally, the fixing plate 23 is clamped again by the control component 4 and the insert rod 9 is inserted to limit the position, so that the sealing plate 21 can be sealed against the outlet of the kneading cavity 2.

[0033] In this embodiment, a push plate 7 is fixed to the top of the vertical sections of the two L-shaped inserts 63. The push plate 7 allows personnel to push the two L-shaped inserts 63 simultaneously, simplifying the operation.

[0034] In this embodiment, the placement plate 511 is provided with elastic components 8, and two sets of elastic components 8 are provided, each corresponding to a fixed component 6. Each set of elastic components 8 includes a limiting plate 81 and a spring 82. The limiting plate 81 is fixed to the placement plate 511, and the spring 82 is fixed to the side of the limiting plate 81 near the fixing ring 61. The side of the spring 82 near the fixing ring 61 is fixed to the side wall of the L-shaped insert 63. The spring 82 enables the L-shaped insert 63 to quickly reset, pressing against the wall while resetting, thereby making the L-shaped insert 63 more stable during use.

[0035] In this embodiment, a first rubber pad 241 is attached and fixed to the side of the limiting block 24 near the fixing plate 23, and a second rubber pad 251 is attached and fixed to the side of the moving block 25 near the fixing plate 23. Both the first rubber pad 241 and the second rubber pad 251 are made of rubber and have a certain degree of flexibility and resilience, which increases the friction between the limiting block 24, the moving block 25 and the fixing plate 23, and further enhances the fixing effect.

[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A kneader for polymer processing, comprising a mounting frame (11) fixed to a kneader body (1), a kneading cavity (2) fixed to the mounting frame (11), and a sealing plate (21) disposed on the kneading cavity (2) for closing the outlet of the kneading cavity (2), characterized in that: The sealing plate (21) is provided with a stirring paddle (22) for processing the polymer material in the kneading chamber (2). The kneading machine body is provided with a transmission assembly (3) for driving the stirring paddle (22) to rotate. The bottom of the sealing plate (21) is fixed with a fixing plate (23). Limiting blocks (24) and moving blocks (25) are provided on the side walls on both sides of the fixing plate (23). The limiting block (24) is provided with a control assembly (4) for driving the moving block (25) to move so that the moving block (25) cooperates with the limiting block (24) and clamps or releases the fixing plate (23). The bottom of the limiting block (24) is fixed with a sliding block (514). The mounting frame (11) is provided with a drive mechanism (5) for driving the sliding block (514) to move along the axial direction of the stirring paddle (22).

2. The kneader for polymer processing according to claim 1, characterized in that: The driving mechanism (5) includes a driving assembly (51), which includes a placement plate (511) fixed to the mounting bracket (11). A mounting plate (26) is hinged to the side of the placement plate (511) away from the stirring paddle (22). A fixing assembly (6) is provided on the placement plate (511) to prevent the mounting plate (26) from rotating along the hinge axis. The driving assembly (51) also includes two fixing blocks (512) fixed to the mounting plate (26), which are symmetrically distributed. The driving assembly (51) further includes a lead screw (513) rotatably mounted between the two fixing blocks (512) and a screw fixed between the two fixing blocks (512) and connected to the lead screw. The limit rod (515) is parallel to the lever (513) and the drive motor (516) is fixed on the side wall of the fixed block (512) and drives the lead screw (513) to rotate. The limit rod (515) passes through the sliding block (514) and is slidably engaged with the sliding block (514). The sliding block (514) is slidably sleeved on the lead screw (513) and threadedly connected to the lead screw (513). The lead screw (513) passes through the fixed block (512) on the side near the drive motor (516) and is fixed to the output end of the drive motor (516). The upper surface of the sliding block (514) is fixed to the lower surface of the limit block (24). The upper surface of the sliding block (514) abuts against the lower surface of the moving block (25).

3. A kneader for polymer processing according to claim 2, characterized in that: The fixing component (6) is provided in two sets. Each set of the fixing component (6) includes a fixing ring (61) fixed on the mounting plate (26), a limiting ring (62) fixed on the placement plate (511), and an L-shaped insert plate (63) that slides in the limiting ring (62) and is inserted into the fixing ring (61).

4. A kneader for polymer processing according to claim 3, characterized in that: The top of the vertical sections of the two L-shaped inserts (63) are jointly fixed with a push plate (7).

5. A kneader for polymer processing according to claim 2, characterized in that: The placement plate (511) is provided with elastic components (8), and there are two sets of elastic components (8) that correspond one-to-one with the fixing components (6). Each set of elastic components (8) includes a limiting plate (81) fixed on the placement plate (511) and a spring (82) fixed on the side of the limiting plate (81) near the fixing ring (61). The side of the spring (82) near the fixing ring (61) is fixed to the side wall of the L-shaped insert plate (63).

6. A kneader for polymer processing according to claim 1, characterized in that: The control component (4) includes a screw (41) rotatably mounted on the limiting block (24), a turntable (42) fixed on the side of the screw (41) away from the limiting block (24), and a rotating rod (43) fixed on the turntable (42). The moving block (25) is provided with a threaded hole (252) that is threadedly connected to the screw (41).

7. A kneader for polymer processing according to claim 6, characterized in that: The movable block (25) is provided with a plurality of limiting holes (253) arranged in a ring array. The turntable (42) is provided with a number of through holes (421) equal to the number of limiting holes (253) and corresponding to each other in position. The through holes (421) are provided with insert rods (9) that are inserted into the limiting holes (253).

8. A kneader for polymer processing according to claim 1, characterized in that: The limiting block (24) is attached to and fixed with a first rubber pad (241) on the side near the fixing plate (23), and the moving block (25) is attached to and fixed with a second rubber pad (251) on the side near the fixing plate (23).

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