Rubber tube processing method

Abstract

The invention relates to the technical field of rubber tube processing, in particular to a rubber tube processing method. Comprising the following steps: 1, preparing a rubber raw material; 2, adding a rubber raw material into the extrusion container; thirdly, an extrusion piston in the extrusion container is moved, the rubber raw materials are extruded into an annular area between the extrusion channel and the constant-temperature core column, and the rubber raw materials form a tubular structure; fourthly, the constant-temperature core column is moved, and the rubber pipe semi-finished product is guided out and slowly cooled; one end of the core column is inserted into the unextruded rubber raw material, so that the contact time between the core column and the rubber raw material is prolonged, and the adhesion effect of the rubber raw material on the outer side surface of the core column is improved, so that the rubber raw material can still be stably adhered to the outer side surface of the core column under the condition that the extrusion speed of the rubber raw material is increased; the purpose of improving the production efficiency when the rubber pipe is produced through the core method is achieved.

Description

Technical Field

[0001] This invention relates to the field of rubber hose processing technology, and more specifically, to a method for processing rubber hoses. Background Technology

[0002] According to whether or not a core is used, the forming method of rubber hose can be divided into cored method and coreless method. The cored method refers to the rubber hose being formed on a hard or soft core, while the coreless method is to form the skeleton layer and the outer rubber layer directly on the pressed inner rubber hose. Afterwards, in order to ensure that the rubber hose is under pressure during the vulcanization process, the rubber hose is wrapped with water-repellent cloth, rope or lead after forming, and then vulcanized.

[0003] When manufacturing rubber tubes using the cored method, the core needs to be moved while the rubber raw material is being extruded, so that the rubber raw material adheres to the core. The adhesion between the rubber raw material and the core is affected by the contact time between the rubber raw material and the core. Therefore, the extrusion speed of the rubber raw material is usually slow, which affects the production efficiency of the rubber tube. Summary of the Invention

[0004] In order to increase the production efficiency of rubber hoses using the core-forming method, the present invention adopts the following technical solution:

[0005] The purpose of this invention is to provide a method for inserting one end of a core into unextruded rubber material, thereby extending the contact time between the core and the rubber material and increasing the adhesion effect of the rubber material on the outer surface of the core. This allows the rubber material to remain stably attached to the outer surface of the core even when the extrusion speed of the rubber material increases, thus increasing the production efficiency when producing rubber tubes using the cored method.

[0006] To achieve the above objectives, the present invention provides a method for processing rubber hoses, comprising the following steps:

[0007] Step 1: Prepare rubber raw materials;

[0008] Step 2: Add the rubber raw material into the extrusion container;

[0009] Step 3: Move the extrusion piston inside the extrusion container to extrude the rubber material into the annular area between the extrusion channel and the constant temperature core column, so that the rubber material forms a tubular structure;

[0010] Step 4: Move the constant temperature core column to export the semi-finished rubber tube and allow it to cool slowly.

[0011] In this application, the extrusion container and the extrusion piston form a container for holding rubber raw materials. The thermostatic core column penetrates the container and is in full contact with the rubber raw materials inside the container. The direction of movement of the thermostatic core column is consistent with the direction of the extrusion piston. Attached Figure Description

[0012] The following figures are intended only to illustrate and explain the present invention, wherein:

[0013] Figure 1 This is a schematic diagram of the rubber hose processing method of the present invention;

[0014] Figure 2 This is a schematic diagram of the extrusion container, extrusion piston, and thermostatic core of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure of the sealing slide plate and telescopic actuator of the present invention;

[0016] Figure 4 This is a schematic diagram of the processing base, rotating support I, and rotating support II of the present invention;

[0017] Figure 5 This is a schematic diagram of the drive arm, the shift stage II, the rotary driver, and the gear ring of the present invention;

[0018] Figure 6 This is a schematic diagram of the extrusion container, extrusion channel, chute, and through-hole of the present invention.

[0019] Figure 7 This is a schematic diagram of the structure of the sliding sleeve and slider of the present invention.

[0020] In the figure: processing base 11; rotating support I 12; rotating support II 13; driving component 14; extrusion container 21; extrusion channel 211; chute 22; through-hole 221; extrusion piston 23; driving arm 24; sealing slide plate 31; telescopic actuator 32; elastic sheet 33; constant temperature core column 41; moving stage I 42; moving stage II 51; rotating actuator 52; gear ring 53; belt 54; sliding sleeve 61; slider 62; connecting pipe 63; air pump 64. Detailed Implementation

[0021] To increase production efficiency when using the core-forming method to manufacture rubber hoses, this invention provides a rubber hose processing method, comprising the following steps:

[0022] Step 1: Prepare rubber raw materials;

[0023] Step 2: Add the rubber raw material into the extrusion container 21;

[0024] Step 3: Move the extrusion piston 23 inside the extrusion container 21 to extrude the rubber material into the annular area between the extrusion channel 211 and the constant temperature core column 41, so that the rubber material forms a tubular structure.

[0025] Step 4: Move the constant temperature core column 41 to discharge the rubber tube semi-finished product and allow it to cool slowly.

[0026] In this application, the extrusion container 21 and the extrusion piston 23 form a container for holding rubber raw materials. The thermostatic core 41 penetrates the container and is in full contact with the rubber raw materials inside the container. The direction of movement of the thermostatic core 41 is consistent with the direction of the extrusion piston 23.

[0027] The following describes specific embodiments of the present invention.

[0028] Reference Figure 2 The following is an embodiment illustrating the purpose of increasing production efficiency when using the core-based method to produce rubber hoses in the rubber hose processing method provided by the present invention:

[0029] The extrusion container 21 of this application is mounted on the processing base 11. The extrusion channel 211 is connected and disposed on one side of the extrusion container 21. A valve body is slidably mounted on the side of the extrusion channel 211. The thermostatic core 41 is inserted into the extrusion channel 211 from the end of the extrusion channel 211 away from the extrusion container 21.

[0030] The thermostatic core column 41 extends into the extrusion container 21 and passes through the drive arm 24 on the extrusion piston 23. By adjusting the position of the drive arm 24, the extrusion piston 23 slides in the extrusion container 21, extruding the rubber material into the annular space between the extrusion channel 211 and the thermostatic core column 41, so that the rubber material forms a tubular structure.

[0031] The scheme of inserting one end of the constant temperature core 41 into the unextruded rubber material prolongs the contact time between the constant temperature core 41 and the rubber material, increases the adhesion effect of the rubber material on the outer surface of the constant temperature core 41, and thus enables the rubber material to be stably attached to the outer surface of the constant temperature core 41 even when the extrusion speed of the rubber material increases, thereby achieving the purpose of increasing the production efficiency when using the cored method to produce rubber tubes.

[0032] An arc surface is provided on the inner side of the connection between the extrusion channel 211 and the extrusion container 21 to enhance the material extrusion effect.

[0033] Reference Figure 2-3 The diagram illustrates the specific structure of the valve body used in the rubber hose processing method provided by this invention:

[0034] The main body of the valve body in this application is a sealing slide plate 31. The sealing slide plate 31 is slidably installed on the side of the extrusion channel 211. An elastic sheet 33 is installed at one end of the sealing slide plate 31 located inside the extrusion channel 211. A telescopic driver 32 for driving the sealing slide plate 31 to slide is installed at the bottom of the extrusion channel 211.

[0035] The telescopic actuator 32 can be an electric telescopic rod or a hydraulic cylinder. Activating the telescopic actuator 32 controls the sealing slide plate 31 to slide on the side of the extrusion channel 211.

[0036] Among them, the elastic sheet 33 can be elastically deformed, so that after the two elastic sheets 33 come into contact, they can continue to deform until their sides are tightly attached to the outer side of the constant temperature core column 41, thereby realizing the operation of stopping the flow of rubber raw materials, so as to add a new batch of rubber raw materials into the extrusion container 21 and control the production process of rubber tubes.

[0037] Reference Figure 2 and Figure 4-5 The following is an example illustrating how the rubber tube processing method provided by the present invention enhances the adhesion of rubber raw materials to the constant-temperature core column 41:

[0038] Heating rods are installed in the extrusion container 21 and the constant temperature core 41 of this application, so that the temperature of the constant temperature core 41 itself is consistent with the temperature of the rubber raw material inside the extrusion container 21 when it is inside the extrusion container 21, thereby avoiding local cooling of the rubber raw material and increasing the effect of the rubber raw material adhering to the constant temperature core 41.

[0039] In addition, when the heating rod inside the constant temperature core 41 is moved outside the extrusion container 21, the temperature of the heating rod is adjusted so that the rubber tube can be cooled down slowly to avoid stress concentration.

[0040] Reference Figure 2 The following are two embodiments illustrating the method for processing rubber hoses provided by the present invention, specifically the addition of rubber raw materials into the extrusion container 21:

[0041] The extrusion piston 23 of this application is detachably fitted with a cover. By removing the cover, rubber raw material is added into the extrusion container 21.

[0042] A filling pipe with a valve can also be connected to the extrusion piston 23. The other end of the filling pipe is connected to the rubber raw material conveying pump through a pipeline. When the conveying pump is started, the rubber raw material is poured into the extrusion container 21.

[0043] Reference Figure 2 and Figure 4-5 The following is an embodiment illustrating the rubber tube processing method provided by the present invention, specifically the extrusion operation of the rubber raw material and the export operation of the isothermal core 41 with the rubber raw material attached:

[0044] In this application, the constant temperature core column 41 and the drive arm 24 are connected to the processing base 11 via the shift stage I 42 and the shift stage II 51, respectively. By adjusting the position of the shift stage I 42 and the shift stage II 51, the rubber raw material is extruded and the constant temperature core column 41 with the rubber raw material attached is exported.

[0045] Specifically: the shift table I 42 is slidably installed in the track on the upper side of the bottom of the machining base 11; the shift table II 51 is slidably installed in the track on the upper side of the bottom of the machining base 11.

[0046] The machining base 11 is equipped with multiple drive components 14 for driving the movement of the moving stage I 42 and the moving stage II 51. The main body of the drive component 14 is a geared motor, and a drive gear is mounted on the output shaft of the geared motor. The multiple drive gears are respectively connected to the rack structure on the moving stage I 42 and the moving stage II 51 through meshing transmission.

[0047] Start the corresponding geared motor to control the sliding stage I 42 and the sliding stage II 51 to slide in multiple tracks on the upper side of the bottom of the processing base 11 to perform extrusion operation on the rubber raw material and to export the constant temperature core column 41 with the rubber raw material attached.

[0048] Reference Figure 5 The following is an example illustrating how the rubber hose processing method provided by the present invention reduces the adhesion of rubber raw materials to the inner wall of the extrusion container 21 and increases the extrusion performance of the rubber raw materials:

[0049] The inner wall of the extrusion container 21 of this application is provided with multiple grooves 22, and the extrusion piston 23 is slidably connected to the grooves 22. Thus, by adjusting the position of the drive arm 24, the extrusion piston 23 can slide inside the extrusion container 21, and the extrusion container 21 and the extrusion piston 23 can be controlled to rotate together.

[0050] Controlling the rotation of the extrusion container 21 flips the rubber material at the bottom of the extrusion container 21 to the top, reducing the adhesion of the rubber material to the inner wall of the extrusion container 21 and increasing the extrusion performance of the rubber material.

[0051] The extrusion container 21 and the extrusion channel 211 are respectively rotatably installed in the rotating support I 12 and rotating support II 13 on the processing base 11.

[0052] Specifically: the drive arm 24 is rotatably connected to the moving platform II 51, the moving platform II 51 is equipped with a rotary driver 52, the output shaft of the rotary driver 52 is equipped with a gear, the drive arm 24 is fixedly equipped with a gear ring 53, and the gear ring 53 and the gear are connected by a belt 54.

[0053] The rotary driver 52 can be a stepper motor or a servo motor. By starting the rotary driver 52, the gear rotates. Under the action of the belt 54, the gear ring 53 and the drive arm 24 rotate together. Since the extrusion piston 23 is stuck in the multiple grooves 22 on the inner wall of the extrusion container 21, the extrusion piston 23 and the extrusion container 21 rotate together.

[0054] At this time, the extrusion container 21 can rotate relative to the extrusion channel 211, reducing the impact on the rubber material of the tubular structure that has already undergone extrusion processing.

[0055] Reference Figure 4The following is an example illustrating the processing of a relatively long rubber hose in the rubber hose processing method provided by the present invention:

[0056] An extension column can be detachably installed at the end of the constant temperature core column 41 of this application.

[0057] The system includes multiple extension columns connected end to end. Adjacent extension columns are connected by threads or plugs. By increasing the number of extension columns, a longer rubber tube can be manufactured.

[0058] Furthermore, an electric heating rod with a battery can be installed inside the extension column to adjust the temperature of the extension column itself, thereby increasing the adhesion of the rubber material to the extension column.

[0059] Reference Figure 4 and Figure 6-7 The following is an illustration of an embodiment of the rubber hose processing method provided by the present invention:

[0060] One end of the chute 22 of this application is provided with a through-hole 221 that penetrates the side wall of the extrusion container 21;

[0061] A sliding sleeve 61 is fixedly connected to the outside of the through-hole 221. A slider 62 is slidably installed inside the sliding sleeve 61. The inner side of the slider 62 can fit against the inner side of the extrusion container 21.

[0062] The end of the sliding sleeve 61 is connected to a connecting pipe 63. There is a cavity between the edge of the slider 62 and the inner wall of the sliding sleeve 61. The connecting pipe 63 is connected to the cavity. The position of the slider 62 in the sliding sleeve 61 can be controlled by injecting and evacuating air into the cavity.

[0063] An air pump 64 is installed at the other end of the connecting pipe 63. By starting the air pump 64, air is injected and pumped into the cavity. By controlling the slider 62 to slide back and forth in the sliding sleeve 61 at high frequency, the rubber material adhering to the inner wall of the extrusion container 21 is pushed, further reducing the adhesion of the rubber material to the inner wall of the extrusion container 21 and increasing the extrusion performance of the rubber material.

Claims

1. A method for processing rubber hoses, characterized in that, Includes the following steps: Step 1: Prepare rubber raw materials; Step 2: Add the rubber raw material into the extrusion container (21); Step 3: Move the extrusion piston (23) inside the extrusion container (21) to extrude the rubber material into the annular area between the extrusion channel (211) and the constant temperature core column (41), so that the rubber material forms a tubular structure; Step 4: Move the constant temperature core column (41) to discharge the rubber tube semi-finished product and allow it to cool slowly.

2. The rubber hose processing method according to claim 1, characterized in that: The extrusion container (21) is mounted on the processing base (11), and the extrusion channel (211) is connected to one side of the extrusion container (21). A valve body is slidably mounted on the side of the extrusion channel (211), and the constant temperature core column (41) is inserted into the extrusion channel (211) from the end of the extrusion channel (211) away from the extrusion container (21).

3. The rubber hose processing method according to claim 2, characterized in that: The thermostatic core (41) extends into the extrusion container (21) and passes through the drive arm (24) on the extrusion piston (23).

4. The rubber hose processing method according to claim 2, characterized in that: The inner wall of the extrusion container (21) is provided with multiple grooves (22), and the extrusion piston (23) is slidably connected to the grooves (22).

5. The rubber hose processing method according to claim 2, characterized in that: The extrusion container (21) and the extrusion channel (211) are respectively rotatably installed in the rotating support I (12) and rotating support II (13) on the processing base (11).

6. The rubber hose processing method according to claim 2, characterized in that: The inner side of the connection between the extrusion channel (211) and the extrusion container (21) is provided with an arc surface.

7. The rubber hose processing method according to claim 3, characterized in that: An extension column can be detachably installed at the end of the constant temperature core column (41).

8. The rubber hose processing method according to claim 7, characterized in that: The extension posts are provided in multiple ways, and the multiple extension posts are connected end to end, with adjacent extension posts being plugged in to connect to each other.

9. The rubber hose processing method according to claim 7, characterized in that: The extension posts are provided in multiple ways, and the multiple extension posts are connected end to end, with adjacent extension posts connected by threads.

10. The rubber hose processing method according to claim 2, characterized in that: The constant temperature core (41) and the drive arm (24) are connected to the processing base (11) through the shift stage I (42) and the shift stage II (51), respectively.

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