A twin-screw extrusion molding machine for irregularly shaped rubber seals

Abstract

This utility model relates to the field of extruder technology and discloses a twin-screw extrusion molding machine for irregularly shaped rubber seals, including a support base, a housing side plate, and a threaded push rod. The housing side plate is slidably mounted on the support base, and the two housing side plates are arranged opposite each other to form the housing of the twin-screw extrusion molding machine. The threaded push rod is rotatably mounted on the support base. This twin-screw extrusion molding machine, by setting the housing side plate to slide on the support base and using an opening and closing mechanism composed of a rotating seat, a threaded fixing seat, and a threaded rod, can realize the rapid closing and opening of the housing, which facilitates the cleaning of the inside of the housing and the screw, and reduces material residue. At the same time, by setting a positioning guide rod, a positioning slider and a positioning spring, as well as a sealing groove and a sealing block at the opening end of the housing side plate, the overall sealing performance of the equipment is ensured, while making the sliding opening and closing process of the housing side plate more stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, specifically to a twin-screw extrusion molding machine for irregularly shaped rubber seals. Background Technology

[0002] In high-end applications such as aerospace and automotive manufacturing, shaped rubber seals have extremely high requirements for product purity and hygiene standards. The cleaning performance of twin-screw extrusion molding equipment directly affects the production quality and safety of the seals. Due to the strong viscosity and plasticity of rubber materials during the production of shaped rubber seals, they easily adhere to the screw thread grooves, the inner wall of the barrel, and the corners and gaps of the die head flow channel during extrusion. The thread configuration of traditional twin-screw extruders is complex, especially the flow channel structure designed for irregular cross-sections, which has many cleaning dead zones that are difficult to directly access.

[0003] Chinese patent CN222933318U discloses a twin-screw extruder that is easy to clean. By setting a horizontally sliding baffle, when the extruder needs to be cleaned, the screw conveyor blades can be moved to the outside of the housing by the baffle, thereby facilitating the cleaning and maintenance of the screw conveyor blades.

[0004] However, when cleaning a twin-screw extruder, especially for sticky rubber materials, the materials tend to stick to the flow channels and grooves inside the casing, making it difficult for the aforementioned device to effectively clean the inside of the casing. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a twin-screw extrusion molding machine for irregularly shaped rubber seals, which features a more convenient function for cleaning the screw conveyor blades and the extruder cavity, thus solving the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] A twin-screw extrusion molding machine for irregularly shaped rubber seals includes a support base, a housing side plate, and a threaded push rod. The housing side plate is slidably mounted on the support base, and the two housing side plates are arranged opposite to each other to form the housing of the twin-screw extrusion molding machine. The threaded push rod is rotatably mounted on the support base, and one end of the threaded push rod extends into the interior of the housing side plate. The housing side plate is provided with an opening and closing mechanism, which is used to control the two housing side plates to move closer to each other to realize the closing and opening of the housing.

[0010] The opening and closing mechanism includes a rotating seat, a threaded fixed seat, and a threaded rod. The rotating seat and the threaded fixed seat are respectively fixedly installed on one of the side plates of the housing. One end of the threaded rod is rotatably connected to the rotating seat, and the other end of the threaded rod is threadedly connected to the threaded fixed seat.

[0011] Preferably, a sealing baffle is rotatably mounted on the threaded push rod, and a sealing groove is provided on the side of the housing side plate, with the two sealing grooves engaging and sealing with the sealing baffle.

[0012] Preferably, the opening and closing mechanism further includes a dual-head motor, a drive bevel gear, and a transmission bevel gear. The dual-head motor is fixedly installed on one outer wall of one of the housing side plates. The drive bevel gear is fixedly installed at the ends of the two drive shafts of the dual-head motor. The transmission bevel gear is fixedly installed on the threaded rod at one end near the rotating seat, and the transmission bevel gear is meshed with the drive bevel gear.

[0013] Preferably, a transmission wheel is also fixedly installed on the threaded rod, and the two transmission wheels on the same side are connected by a transmission belt.

[0014] Preferably, a positioning guide rod is fixedly installed on the support base, and a positioning slider is fixedly installed on the bottom of the side plate of the housing. The positioning slider is rotatably connected to the positioning guide rod, and a positioning spring is sleeved on the positioning guide rod. The two ends of the positioning spring are fixedly connected to the positioning slider and the support base, respectively.

[0015] Preferably, one of the housing side panels has a sealing groove at its open end, and the other housing side panel has a sealing block fixedly installed at its open end, the sealing block engaging and sealing with the sealing groove.

[0016] Preferably, an extrusion control motor is fixedly installed on one side wall of the support base, and the drive end of the extrusion control motor is threadedly connected to one of the threaded push rods, and the threaded push rods are connected by gear meshing.

[0017] Preferably, the upper end of the side plate of the housing is provided with a feed inlet, and one end of the side plate of the housing is provided with an extrusion outlet.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this utility model provides a twin-screw extrusion molding machine for irregularly shaped rubber seals, which has the following advantages:

[0020] 1. This twin-screw extruder features a sliding housing side plate on a support base, coupled with an opening and closing mechanism consisting of a rotating seat, a threaded fixing seat, and a threaded rod. This mechanism enables rapid closing and disassembly of the housing, facilitating cleaning of the interior and screws and reducing material residue. Furthermore, the inclusion of a positioning guide rod, positioning slider, positioning spring, and sealing grooves and blocks at the openings of the housing side plate ensures overall sealing performance while making the sliding opening and closing process of the housing side plate smoother and more reliable. This significantly improves the convenience of cleaning and maintenance, as well as the structural stability of the equipment.

[0021] 2. This twin-screw extruder achieves automated control of the opening and closing of the machine housing side plates by setting up a dual-head motor, drive bevel gear, transmission bevel gear, transmission wheel, and transmission belt. At the same time, due to the setting of positioning guide rod, positioning slider, and positioning spring, when the machine housing side plates are opened, under the pressure of the positioning spring, the two machine housing side plates move towards both sides of the threaded push rod, so that the threaded push rod is away from the inner side wall of the two machine housing side plates, thereby reducing the difficulty of cleaning and improving the cleaning efficiency. Attached Figure Description

[0022] Figure 1 This is one of the three-dimensional structural schematic diagrams of the twin-screw extrusion molding machine of this utility model;

[0023] Figure 2 This is the second three-dimensional structural schematic diagram of the twin-screw extrusion molding machine of this utility model;

[0024] Figure 3 This is the third three-dimensional structural schematic diagram of the twin-screw extrusion molding machine of this utility model;

[0025] Figure 4 This is the fourth three-dimensional structural schematic diagram of the twin-screw extrusion molding machine of this utility model.

[0026] In the picture:

[0027] 1. Support base; 11. Positioning guide rod; 12. Positioning spring;

[0028] 2. Side panel of the casing; 21. Sealing groove; 22. Positioning slider; 23. Sealing groove; 24. Sealing block; 25. Feed inlet; 26. Extrusion outlet;

[0029] 3. Threaded push rod; 31. Sealing baffle;

[0030] 4. Opening and closing mechanism; 41. Rotating seat; 42. Threaded fixed seat; 43. Threaded rod; 44. Double-headed motor; 45. Drive bevel gear; 46. Transmission bevel gear; 47. Transmission wheel;

[0031] 5. Extrusion control motor. Detailed Implementation

[0032] 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.

[0033] Example 1

[0034] Please see Figure 1 This utility model provides a twin-screw extrusion molding machine for irregularly shaped rubber seals, including a support base 1, a housing side plate 2, and a threaded push rod 3. The housing side plate 2 is slidably mounted on the support base 1, and the two housing side plates 2 are arranged opposite to each other to form the housing of the twin-screw extrusion molding machine. The threaded push rod 3 is rotatably mounted on the support base 1, and one end of the threaded push rod 3 extends into the interior of the housing side plate 2. The housing side plate 2 is provided with an opening and closing mechanism 4, which is used to control the two housing side plates 2 to approach each other to realize the closing and opening of the housing.

[0035] The opening and closing mechanism 4 includes a rotating seat 41, a threaded fixed seat 42, and a threaded rod 43. The rotating seat 41 and the threaded fixed seat 42 are respectively fixedly installed on one of the side plates 2 of the housing. One end of the threaded rod 43 is rotatably connected to the rotating seat 41, and the other end of the threaded rod 43 is threadedly connected to the threaded fixed seat 42.

[0036] As can be seen from the above, by designing the one-piece housing of the traditional twin-screw extruder into two detachable housing side plates 2, the two housing side plates 2 are fixed and sealed when the equipment is used for extrusion, thus having the function of a complete housing. When cleaning is required, the two housing side plates 2 can be easily separated, making it easier and more convenient to clean the inside of the housing. At the same time, when the two housing side plates 2 are separated, it is also easier to clean the threaded push rod 3.

[0037] When using this device, the two side plates 2 of the extruder housing can be slid apart along the support base 1 by operating the opening and closing mechanism 4, so that the internal threaded push rod 3 can be exposed for cleaning or replacement. When the side plates 2 of the extruder housing are closed, the opening and closing mechanism 4 makes the side plates fit tightly together to form a complete extruder housing.

[0038] Example 2

[0039] As shown in the figure, the difference between this embodiment and the above embodiment is that a sealing baffle 31 is rotatably installed on the threaded push rod 3, and a sealing groove 21 is opened on the side of the side plate 2 of the housing. The two sealing grooves 21 are engaged and sealed with the sealing baffle 31.

[0040] As can be seen from the above, by setting the sealing baffle 31 and the sealing groove 21 to lock together and seal, the material can be effectively prevented from leaking from the gap between the side plate 2 of the housing and the threaded push rod 3, thus improving the sealing performance of the equipment.

[0041] The opening and closing mechanism 4 also includes a dual-head motor 44, a drive bevel gear 45, and a transmission bevel gear 46. The dual-head motor 44 is fixedly installed on one side outer wall of one of the housing side plates 2. The drive bevel gear 45 is fixedly installed at the ends of the two drive shafts of the dual-head motor 44. The transmission bevel gear 46 is fixedly installed on the threaded rod 43 at one end near the rotating seat 41, and the transmission bevel gear 46 is meshed with the drive bevel gear 45.

[0042] As can be seen from the above, since the rotating seat 41, the threaded fixing seat 42 and the threaded rod 43 in the opening and closing mechanism 4 are simultaneously arranged above and below the side plate 2 of the housing, when the threaded rod 43 above the housing and the threaded rod 43 below the housing rotate at the same time, the sealing performance of the side plate 2 of the housing can be improved. By setting a double-headed motor 44 to control the rotation of the drive bevel gear 45, the transmission bevel gear 46 that meshes with the drive bevel gear 45 will rotate accordingly, so that the threaded rod 43 above the housing and the threaded rod 43 below the housing are simultaneously controlled by the double-headed motor 44 to rotate synchronously.

[0043] A drive wheel 47 is also fixedly installed on the threaded rod 43, and the two drive wheels 47 on the same side are connected by a drive belt.

[0044] As can be seen from the above, by setting the transmission wheel 47 and the transmission belt, the two threaded rods 43 on the same side rotate synchronously, ensuring that the side plate 2 of the housing is subjected to uniform force during the opening and closing process, and avoiding jamming or poor sealing caused by uneven force.

[0045] Example 3

[0046] As shown in the figure, the difference between this embodiment and the above embodiment is that a positioning guide rod 11 is fixedly installed on the support base 1, and a positioning slider 22 is fixedly installed on the bottom of the side plate 2 of the housing. The positioning slider 22 is tumblingly connected to the positioning guide rod 11, and a positioning spring 12 is sleeved on the positioning guide rod 11. The two ends of the positioning spring 12 are fixedly connected to the positioning slider 22 and the support base 1, respectively.

[0047] As can be seen from the above, by setting the positioning guide rod 11 and the positioning slider 22, the sliding of the housing side plate 2 is guided. At the same time, by setting the positioning spring 12, when the housing side plate 2 is separated, the housing side plates 2 on both sides of the threaded push rod 3 move away from the threaded push rod 3, so that the threaded push rod 3 is fully exposed to the external environment, reducing the difficulty of cleaning the threaded push rod 3. Meanwhile, the buffering effect of the positioning spring 12 can absorb the impact force during the opening and closing process.

[0048] One of the side panels 2 of the housing has a sealing groove 23 at its open end, and the other side panel 2 of the housing has a sealing block 24 fixedly installed at its open end. The sealing block 24 is engaged with the sealing groove 23 for sealing.

[0049] As can be seen from the above, by setting the sealing groove 23 and the sealing block 24, the embedded snap-fit ​​structure between the two can enhance the sealing performance and prevent the material from overflowing from the joint during high-pressure extrusion.

[0050] Example 4

[0051] As shown in the figure, the difference between this embodiment and the above embodiment is that an extrusion control motor 5 is fixedly installed on one side wall of the support base 1, and the drive end of the extrusion control motor 5 is threadedly connected to one of the threaded push rods 3. The threaded push rods 3 are connected by gear meshing.

[0052] As can be seen from the above, the extrusion control motor 5 is used to control the rotation of the threaded push rod 3.

[0053] The upper end of the side plate 2 of the housing is provided with a feed port 25, and one end of the side plate 2 of the housing is provided with an extrusion port 26.

[0054] As can be seen from the above, the feed port 25 and the extrusion port 26 are used for feeding and extrusion molding of irregularly shaped rubber seals.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A twin-screw extrusion molding machine for irregularly shaped rubber seals, comprising a support base, a housing side plate, and a threaded feed rod, characterized in that: The housing side plates are slidably mounted on the support base. The two housing side plates are arranged opposite each other to form the housing of the twin-screw extrusion molding machine. The threaded push rod is rotatably mounted on the support base, and one end of the threaded push rod extends into the interior of the housing side plate. The housing side plate is provided with an opening and closing mechanism, which is used to control the two housing side plates to move closer to each other to realize the closing and opening of the housing. The opening and closing mechanism includes a rotating seat, a threaded fixed seat, and a threaded rod. The rotating seat and the threaded fixed seat are respectively fixedly installed on one of the side plates of the housing. One end of the threaded rod is rotatably connected to the rotating seat, and the other end of the threaded rod is threadedly connected to the threaded fixed seat.

2. The twin-screw extrusion molding machine for irregularly shaped rubber seals according to claim 1, characterized in that: A sealing baffle is rotatably mounted on the threaded push rod, and a sealing groove is provided on the side of the housing side plate. The two sealing grooves are engaged with the sealing baffle for sealing.

3. The twin-screw extrusion molding machine for irregularly shaped rubber seals according to claim 1, characterized in that: The opening and closing mechanism also includes a dual-head motor, a drive bevel gear, and a transmission bevel gear. The dual-head motor is fixedly installed on one outer wall of one of the housing side plates. The drive bevel gear is fixedly installed at the ends of the two drive shafts of the dual-head motor. The transmission bevel gear is fixedly installed on the threaded rod at one end near the rotating seat, and the transmission bevel gear is meshed with the drive bevel gear.

4. The twin-screw extrusion molding machine for irregularly shaped rubber seals according to claim 1, characterized in that: A transmission wheel is also fixedly installed on the threaded rod, and the two transmission wheels on the same side are connected by a transmission belt.

5. The twin-screw extrusion molding machine for irregularly shaped rubber seals according to claim 1, characterized in that: A positioning guide rod is fixedly installed on the support base, and a positioning slider is fixedly installed on the bottom of the side plate of the housing. The positioning slider is rotatably connected to the positioning guide rod, and a positioning spring is sleeved on the positioning guide rod. The two ends of the positioning spring are fixedly connected to the positioning slider and the support base, respectively.

6. The twin-screw extrusion molding machine for irregularly shaped rubber seals according to claim 1, characterized in that: One of the housing side panels has a sealing groove at its open end, and the other housing side panel has a sealing block fixedly installed at its open end, the sealing block engaging and sealing with the sealing groove.

7. The twin-screw extrusion molding machine for irregularly shaped rubber seals according to claim 1, characterized in that: An extrusion control motor is fixedly installed on one side wall of the support base. The drive end of the extrusion control motor is threadedly connected to one of the threaded push rods, and the threaded push rods are connected by gear meshing.

8. The twin-screw extrusion molding machine for irregularly shaped rubber seals according to claim 1, characterized in that: The upper end of the side plate of the housing is provided with a feed port, and one end of the side plate of the housing is provided with an extrusion port.

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