Rubber extrusion molding machine with adjustable die head

Abstract

The utility model relates to the technical field of rubber preparation, in particular to a rubber extrusion molding machine with an adjustable die head, which comprises a base, a driving seat, an extrusion chamber, a feeding chamber and an extrusion screw rod, the driving seat is arranged on the right upper side of the base, the extrusion chamber is arranged on the left side of the driving seat, the extrusion screw rod is arranged in the extrusion chamber, and the feeding chamber is arranged on the right upper side of the base. And the right end of the extrusion screw rod is connected with the driving base, a feeding chamber is arranged on the upper right portion of the extrusion chamber, and a temperature sensing module is installed on the surface of the extrusion screw rod. According to the rubber extrusion molding machine with the adjustable die head, the temperature control structures are independently arranged in the extrusion chamber and the feeding chamber to achieve the independent temperature control effect on different working areas, the temperature environment in the extrusion chamber can be monitored in cooperation with the temperature sensing module, follow-up flexible adjustment is facilitated, an independent temperature control module can also be arranged in the die head area, and the temperature control effect is good. The temperature of each working area is kept in an optimal range, the rubber performance is stable, and the preparation quality of subsequent products is improved.

Description

Technical Field

[0001] This utility model relates to the field of rubber preparation technology, specifically to a rubber extrusion molding machine with an adjustable die head. Background Technology

[0002] In the bicycle tire manufacturing process, rubber raw materials can be processed using a rubber extrusion molding machine. The rubber extrusion molding machine is an important piece of equipment in rubber production, widely used to extrude mixed rubber through heating and pressure to form products of different shapes.

[0003] Prior art 1 (Chinese patent application number CN202111140376.9, published on December 31, 2021) discloses a rubber product extruder, including a frame and a barrel mounted on the frame. A screw is installed inside the barrel. One end of the barrel is equipped with a drive mechanism for rotating the screw, and the other end has a discharge port. A feeding mechanism is located at the top end of the barrel. The extruder also includes two sets of fixing plates, two sets of hydraulic cylinders, a front semi-circular ring, a rear semi-circular ring, and two sets of sealing plates. Dispensing ports are located on the front and rear sides of the barrel near the feeding mechanism. The front and rear semi-circular rings can form a cleaning ring. An inner spiral blade that cooperates with the screw is located on the inner side of the cleaning ring, and a first rubber scraper for cleaning the screw is located on the inner side of the cleaning ring. The outer side of the cleaning ring is equipped with a second rubber scraper for cleaning the inner wall of the barrel, which facilitates the cleaning of residual material on the screw surface inside the barrel after use. This simplifies operation, improves reliability, and ensures the service life of the equipment. Prior art 2 (Chinese patent application number CN202022240825.4, published November 12, 2021) describes a rubber extruder, including a base, a motor housing, a machine body, and a feed box. The motor housing is connected to a first rotating shaft, which is connected to a thickened screw. The feed box is connected to a first feed inlet and a second feed inlet. A first pressure roller is connected to both ends of the first feed inlet, and a second pressure roller is connected to both ends of the second feed inlet. A first limiting roller and a second limiting roller are connected inside the feed box. This device straightens the rubber strip before feeding, effectively preventing the rubber strip from wrinkling and rolling inside the machine body, thus preventing accumulation and blockage.

[0004] When manufacturing high-performance rubber products such as bicycle tires, existing rubber extrusion molding machines suffer from inaccurate temperature control when preparing new functional rubbers (such as high-temperature resistant rubber), which affects the subsequent extrusion quality. Furthermore, the die structure of existing rubber extrusion molding machines is relatively simple and lacks the ability to flexibly adjust for new rubber materials and complex formulations, resulting in low molding efficiency and reduced ease of use of the equipment. Utility Model Content

[0005] The purpose of this invention is to provide a rubber extrusion molding machine with an adjustable die head, in order to solve the problems mentioned in the background art, such as the inaccurate temperature control of existing rubber extrusion molding machines when processing new functional rubbers, such as high-temperature resistant rubber, which affects the subsequent extrusion quality. Furthermore, the existing rubber extrusion molding machines have relatively simple die head structures and lack the ability to flexibly adjust for new functional rubber materials and complex formulations, resulting in low molding efficiency and reduced ease of use of the equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rubber extrusion molding machine with an adjustable die head, comprising a base, a drive seat, an extrusion chamber, a feeding chamber, and an extrusion screw. The drive seat is located on the upper right side of the base, and the extrusion chamber is located on the left side of the drive seat. An extrusion screw is located inside the extrusion chamber, with its right end connected to the drive seat. The feeding chamber is located on the upper right side of the extrusion chamber. A temperature sensing module is mounted on the surface of the extrusion screw, and a first temperature control plate is located on the outer side of the extrusion screw. Fixed to the inner wall of the extrusion chamber, the feed chamber is equipped with a second temperature control plate to control the temperature at the raw material feed point. An extrusion head is provided at the left end of the extrusion chamber to control the shape of the extruded product. An installation part is fixed to the end of the extrusion head, and a movable column is provided at the end of the installation part. The extrusion head and the extrusion chamber form a transverse concave-convex interlocking structure. An active control mechanism is connected to the middle of the movable column. The extrusion heads are evenly distributed on the outside of the movable column. The extrusion head is controlled by the movement of the movable column, and the type of extrusion head used is controlled.

[0007] To further optimize this technical solution, a control line is provided on the outside of the extrusion chamber, and the control line is made of flexible material. The extrusion chamber and the feeding chamber are designed as a combined structure.

[0008] To further optimize this technical solution, the extrusion chamber and the feeding chamber are symmetrically distributed about the center line of the base, and the extrusion chamber and the feeding chamber enclose each other to form a complete structure. The first temperature control plate is distributed in a discontinuous front-to-back symmetrical manner inside the extrusion chamber. A movement control mechanism is provided below the extrusion chamber to control the movement of the extrusion chamber.

[0009] To further optimize this technical solution, the movement control mechanism includes a drive block, a bidirectional threaded rod, and a motor;

[0010] The drive block is fixed below the extrusion chamber, and the drive block and the base form a front-to-back sliding structure;

[0011] A two-way threaded rod passes through the drive block to form a threaded connection between the drive block and the drive block;

[0012] The motor is connected to the bidirectional threaded rod to control its rotation.

[0013] To further optimize this technical solution, a connecting groove is provided on the surface of the movable column, and a threaded connection is formed between the connecting groove and the mounting part, so that the extrusion head can be disassembled and replaced.

[0014] To further optimize this technical solution, the activity control mechanism includes a fixed column, a support frame, a first spring, a connecting ring, a slider, and an auxiliary limiting mechanism;

[0015] Fixed columns are installed inside movable columns and form a nested connection between movable columns;

[0016] The support frame is fixed to the right end of the fixed column and is fixed above the base;

[0017] The first spring is located on the outside of the fixed column, and the right end of the first spring is fixedly connected to the support frame.

[0018] A connecting ring is fixed to the left side of the first spring, which provides a leftward pulling force to the connecting ring.

[0019] The slider is fixed to the left side surface of the connecting ring, and the left end of the slider has an enlarged structure design, and a sliding connection is formed between the slider and the movable column;

[0020] An auxiliary limiting mechanism is installed on the outside of the fixed column to limit the horizontal movement of the movable column, so as to keep the position of the extrusion head stable.

[0021] To further optimize this technical solution, the auxiliary limiting mechanism includes a limiting groove, a limiting block, a second spring, and a control head;

[0022] A limiting groove is formed on the surface of the fixed column;

[0023] The limiting block is connected to the limiting groove, and the limiting block and the movable column form an up-and-down sliding structure. The horizontal movement of the movable column is blocked by the connection between the limiting block and the limiting groove.

[0024] The second spring is located below the limiting block to provide an upward thrust to the limiting block;

[0025] The control head is fixed below the limit block to control the movement of the limit block.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] (1) By setting independent temperature control structures in the extrusion chamber and the feeding chamber respectively, the temperature control effect of different working areas can be achieved. In addition, the temperature sensing module can monitor the temperature environment in the extrusion chamber, which is convenient for subsequent adjustments. Furthermore, an independent temperature control module can also be set in the die head area to further optimize temperature control. This can effectively regulate the temperature of each working area and keep it within the optimal processing range, thereby improving the processing quality of new rubber functional materials (such as high-temperature resistant rubber) in the production of high-performance rubber products such as bicycle tires. Through the precision of temperature control, not only can the stability of the extrusion molding process be improved, but also the performance stability and consistency of the final product can be ensured, thereby improving production efficiency and product quality and reliability.

[0028] (2) The feed chamber is designed in a split manner, which allows the feed chamber to be opened, thereby exposing the inside of the feed chamber and the extrusion screw, making it convenient to clean the residual material and to inspect and maintain the inside of the equipment.

[0029] (3) The multiple extrusion heads allow for replacement and adjustment, enabling the switching of different extrusion heads for different extrusion needs, thereby increasing the applicability of the device and improving its flexibility and ease of use.

[0030] (4) The extrusion head can be switched by rotating the movable column. After the movable column is rotated, it can be locked by the connection of the limiting block and the limiting groove to maintain the connection stability between the extrusion head and the extrusion chamber and avoid the extrusion head from being squeezed and moving, which would cause extrusion leakage. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0032] Figure 2 This is a top view of the structure of this utility model;

[0033] Figure 3 This is a schematic diagram of the main cross-section of the present invention;

[0034] Figure 4 This is a side sectional view of the present invention.

[0035] Figure 5 This is a schematic diagram of the open structure of the extrusion chamber of this utility model;

[0036] Figure 6 This is a schematic diagram of the three-dimensional structure of the movable column of this utility model;

[0037] Figure 7 This is a schematic diagram of the main cross-section of the movable column of this utility model.

[0038] In the diagram: 1. Base; 2. Drive seat; 3. Extrusion chamber; 4. Feed chamber; 5. Extrusion screw; 6. Temperature sensing module; 7. First temperature control plate; 8. Second temperature control plate; 9. Extrusion head; 10. Control line; 11. Drive block; 12. Bidirectional threaded rod; 13. Motor; 14. Mounting component; 15. Connecting groove; 16. Movable column; 17. Fixed column; 18. Support frame; 19. First spring; 20. Connecting ring; 21. Slider; 22. Limiting groove; 23. Limiting block; 24. Second spring; 25. Control head. Detailed Implementation

[0039] 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.

[0040] Please see Figures 1-7 The present invention provides the following technical solution: a rubber extrusion molding machine with adjustable die head, including a base 1, a drive seat 2, an extrusion chamber 3, a feeding chamber 4 and an extrusion screw 5. The drive seat 2 is provided on the upper right side of the base 1, and the extrusion chamber 3 is provided on the left side of the drive seat 2. The extrusion screw 5 is provided inside the extrusion chamber 3, and the right end of the extrusion screw 5 is connected to the drive seat 2.

[0041] Example 1: This example provides the following technical solution, disclosing that a feeding chamber 4 is provided on the upper right side of the extrusion chamber 3, a temperature sensing module 6 is installed on the surface of the extrusion screw 5, and a first temperature control plate 7 is provided on the outer side of the extrusion screw 5, and the first temperature control plate 7 is fixed to the inner wall of the extrusion chamber 3. A second temperature control plate 8 is provided inside the feeding chamber 4 to control the temperature at the raw material feeding point. An extrusion head 9 is provided at the left end of the extrusion chamber 3 to control the shape of the extruded product. An installation part 14 is fixed at the end of the extrusion head 9, and a movable column 16 is provided at the end of the installation part 14. The extrusion head 9 and the extrusion chamber 3 form a transverse concave-convex interlocking structure. An active control mechanism is connected to the middle of the movable column 16. The extrusion heads 9 are evenly distributed on the outer side of the movable column 16. The movement of the movable column 16 controls the extrusion heads 9 and controls the type of extrusion head 9 used. A control line 10 is provided on the outer side of the extrusion chamber 3, and the control line 10 is made of flexible material. The extrusion chamber 3 and the feeding chamber 4 are a combined structural design.

[0042] In operation, raw materials are added to the extrusion chamber 3 through the feeding chamber 4. The drive seat 2 provides driving force to the extrusion screw 5, which transports the raw materials. Finally, the materials are extruded outward through the extrusion head 9. Individual temperature control structures are installed in both the extrusion chamber 3 and the feeding chamber 4 to achieve individual temperature control for different working areas. A temperature sensing module 6 monitors the temperature within the extrusion chamber 3, facilitating subsequent dynamic adjustments to ensure the temperature remains within a suitable range. Furthermore, a separate temperature control module can be installed in the die head area to maintain the temperature of each working area within the optimal range. Precise temperature control effectively avoids rubber performance instability caused by temperature fluctuations, especially when processing new functional rubbers (such as high-temperature resistant rubber and anti-aging rubber). This ensures consistent rubber quality across each production batch, preventing performance differences due to temperature fluctuations, thereby improving the stability and controllability of the bicycle tire production process. It also effectively reduces the production of defective products, increases production efficiency, and lowers production costs.

[0043] Example 2: Based on Example 1, the extrusion chamber 3 and the feeding chamber 4 are symmetrically distributed about the center line of the base 1. The extrusion chamber 3 and the feeding chamber 4 enclose each other to form a complete structure. The first temperature control plate 7 is distributed in a discontinuous front-to-back symmetrical shape inside the extrusion chamber 3. A movement control mechanism is provided below the extrusion chamber 3 to control the movement of the extrusion chamber 3. The movement control mechanism includes a drive block 11, a bidirectional threaded rod 12 and a motor 13. The drive block 11 is fixed below the extrusion chamber 3, and the drive block 11 and the base 1 form a front-to-back sliding structure. The bidirectional threaded rod 12 passes through the drive block 11 and forms a threaded connection between the drive block 11 and the drive block 12. The motor 13 is connected to the bidirectional threaded rod 12 to control the rotation of the bidirectional threaded rod 12.

[0044] When the device is finished and internal cleaning or maintenance is required, the extruder head 9 can be removed from the left side of the extrusion chamber 3. Then, the bidirectional threaded rod 12 is driven to rotate by the motor 13. The bidirectional threaded rod 12 drives the two sets of drive blocks 11 connected to it to move synchronously in opposite directions, separating the extrusion chamber 3 and exposing its interior, thus facilitating subsequent cleaning and maintenance. This setup can effectively improve the maintenance efficiency of the rubber extrusion molding machine, reduce downtime of the bicycle tire production line, and thus improve overall production efficiency and equipment reliability.

[0045] Example 3: Based on Example 1, a connecting groove 15 is provided on the surface of the movable column 16, and the connecting groove 15 and the mounting part 14 form a threaded connection, allowing the extruder head 9 to be disassembled and replaced. The movable control mechanism includes a fixed column 17, a support frame 18, a first spring 19, a connecting ring 20, a slider 21, and an auxiliary limiting mechanism. The fixed column 17 is located inside the movable column 16 and forms a nested connection with the movable column 16. The support frame 18 is fixed to the right end of the fixed column 17 and is fixed above the base 1. The first spring 19 is located on the outside of the fixed column 17, and the right end of the first spring 19 is fixedly connected to the support frame 18. The connecting ring 20 is fixed to the left side of the first spring 19, and the first spring 19 provides a leftward pulling force to the connecting ring 20. The slider 21 is fixed to the connecting... The left side surface of ring 20 and the left end of slider 21 are designed with an enlarged structure. Sliding connection is formed between slider 21 and movable column 16. Auxiliary limiting mechanism is set on the outside of fixed column 17 to limit the horizontal movement of movable column 16, so that the position of extruder head 9 is kept stable. Auxiliary limiting mechanism includes limiting groove 22, limiting block 23, second spring 24 and control head 25. Limiting groove 22 is opened on the surface of fixed column 17. Limiting block 23 is connected to limiting groove 22, and limiting block 23 and movable column 16 form an up-and-down sliding structure. The horizontal movement of movable column 16 is blocked by the connection between limiting block 23 and limiting groove 22. Second spring 24 is set below limiting block 23 to provide upward thrust to limiting block 23. Control head 25 is fixed below limiting block 23 to control the movement of limiting block 23.

[0046] The extruder head 9 is connected to the mounting part 14 and the movable column 16. The extruder head 9 can be removed and replaced by disconnecting the mounting part 14 and the connecting groove 15. Different types of extruder heads 9 can be used for backup. When it is necessary to switch the use of the extruder head 9, the control head 25 can be driven downward to move, so that it moves the limiting block 23. The connection between the limiting block 23 and the limiting groove 22 can be disconnected. Then, the movable column 16 can be pulled to move the extruder head 9 horizontally, moving the extruder head 9 out from the left end of the extrusion chamber 3. At the same time, the first spring 19 is stretched. Then, the movable column 16 can be rotated to move the extruder head 9, changing the shape of the extruder head 9 located at the left end of the extrusion chamber 3. After the switching is completed, the control of the movable column 16 is released, and the first spring 19 pulls the movable column 16 to the right to reset, so that the extruder head 9 and the extrusion chamber 3 are fitted together. Then, the connection between the limiting block 23 and the limiting groove 22 limits it to prevent it from moving under pressure, so that the extruder head 9 can be quickly replaced. The flexible die head can adapt to more processing needs.

[0047] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rubber extrusion molding machine with adjustable die head, comprising a base (1), a drive seat (2), an extrusion chamber (3), a feeding chamber (4) and an extrusion screw (5), wherein the drive seat (2) is provided on the upper right side of the base (1), and the extrusion chamber (3) is provided on the left side of the drive seat (2), and the extrusion screw (5) is provided inside the extrusion chamber (3), and the right end of the extrusion screw (5) is connected to the drive seat (2); Its features are: A feeding chamber (4) is provided on the upper right side of the extrusion chamber (3). A temperature sensing module (6) is installed on the surface of the extrusion screw (5), and a first temperature control plate (7) is provided on the outer side of the extrusion screw (5). The first temperature control plate (7) is fixed to the inner wall of the extrusion chamber (3). A second temperature control plate (8) is provided inside the feeding chamber (4) to control the temperature at the raw material feeding point. An extrusion head (9) is provided at the left end of the extrusion chamber (3) to control the shape of the extruded product. An installation part (14) is fixed at the end of the extrusion head (9), and a movable column (16) is provided at the end of the installation part (14). The extrusion head (9) and the extrusion chamber (3) form a transverse concave-convex interlocking structure. An active control mechanism is connected to the middle of the movable column (16). The extrusion heads (9) are evenly distributed on the outer side of the movable column (16). The extrusion heads (9) are controlled by the movement of the movable column (16) to control the type of extrusion head (9) used.

2. The rubber extrusion molding machine with adjustable die head according to claim 1, characterized in that: The extrusion chamber (3) is provided with a control line (10) on the outside, and the control line (10) is made of flexible material. The extrusion chamber (3) and the feeding chamber (4) are designed as a combined structure.

3. A rubber extrusion molding machine with an adjustable die head according to claim 2, characterized in that: The extrusion chamber (3) and the feeding chamber (4) are symmetrically distributed about the center line of the base (1). The extrusion chamber (3) and the feeding chamber (4) enclose each other to form a complete structure. The first temperature control plate (7) is distributed in a broken front-to-back symmetrical shape inside the extrusion chamber (3). A movement control mechanism is provided below the extrusion chamber (3) to control the movement of the extrusion chamber (3).

4. A rubber extrusion molding machine with an adjustable die head according to claim 3, characterized in that: The movement control mechanism includes a drive block (11), a bidirectional threaded rod (12), and a motor (13); The drive block (11) is fixed below the extrusion chamber (3), and the drive block (11) and the base (1) form a front-to-back sliding structure. A two-way threaded rod (12) passes through the drive block (11) and forms a threaded connection between the drive block (11); The motor (13) is connected to the bidirectional threaded rod (12) to control the rotation of the bidirectional threaded rod (12).

5. A rubber extrusion molding machine with an adjustable die head according to claim 1, characterized in that: The surface of the movable column (16) is provided with a connecting groove (15), and the connecting groove (15) and the mounting part (14) form a threaded connection, so that the extrusion head (9) can be disassembled and replaced.

6. A rubber extrusion molding machine with an adjustable die head according to claim 1, characterized in that: The activity control mechanism includes a fixed column (17), a support frame (18), a first spring (19), a connecting ring (20), a slider (21), and an auxiliary limiting mechanism; The fixed column (17) is set inside the movable column (16) and forms a nested connection between the movable columns (16); The support frame (18) is fixed to the right end of the fixed column (17) and the support frame (18) is fixed above the base (1); The first spring (19) is located on the outside of the fixed column (17), and the right end of the first spring (19) is fixedly connected to the support frame (18). The connecting ring (20) is fixed to the left side of the first spring (19), which provides a leftward pulling force to the connecting ring (20). The slider (21) is fixed on the left side surface of the connecting ring (20), and the left end of the slider (21) is designed with an enlarged structure. The slider (21) and the movable column (16) form a sliding connection. An auxiliary limiting mechanism is set on the outside of the fixed column (17) to limit the horizontal movement of the movable column (16) so that the position of the extrusion head (9) remains stable.

7. A rubber extrusion molding machine with an adjustable die head according to claim 6, characterized in that: The auxiliary limiting mechanism includes a limiting groove (22), a limiting block (23), a second spring (24), and a control head (25); A limiting groove (22) is formed on the surface of the fixing post (17); The limiting block (23) is connected to the limiting groove (22), and the limiting block (23) and the movable column (16) form an up-and-down sliding structure. The horizontal movement of the movable column (16) is blocked by the connection between the limiting block (23) and the limiting groove (22). The second spring (24) is located below the limiting block (23) to provide an upward thrust to the limiting block (23); The control head (25) is fixed below the limit block (23) to control the movement of the limit block (23).

Images