Extrusion die for rubber joint boot

Abstract

The utility model discloses a kind of outer sleeve extrusion dies of rubber joint, including extrusion ram, guide cylinder and base, the extrusion ram, guide cylinder and base are sequentially arranged from top to bottom, the middle part of the top of the base is equipped with positioning slot, the inside fixed mounting of the base is located in the connecting bracket of positioning slot directly below, the both sides of the connecting bracket are rotatably connected with swing lever, the top of the swing lever is integrally connected with the clamping head located above connecting bracket, the side of the swing lever is integrally provided with guide camber, the front and rear sides of the connecting bracket are provided with the unfolding spring between swing lever, the inside sliding connection of the connecting bracket has sliding block, the middle part of the top of the sliding block is integrally connected with connecting column, the top of the connecting column is fixedly installed with the top plate between two clamping heads. Clamping head is clamped from the both sides of shaft core, prevent extrusion from being caused by the total use of pressure in the composition in the shaft core offset.

Description

Technical Field

[0001] This utility model relates to the field of rubber shock absorber technology, specifically to an extrusion mold for a rubber joint outer sleeve. Background Technology

[0002] The rubber joint is a key component of the hydraulic vibration damper, including a spindle with an outwardly arched surface in the middle. A metal outer sleeve is fitted around the outer periphery of the arched surface, and a rubber layer is extruded between the metal outer sleeve and the arched surface of the spindle. The extrusion compactness of this rubber layer directly affects the vibration damping performance of the rubber joint. In the prior art, there are two extrusion bonding methods between the outer sleeve and the rubber layer of the rubber joint. The first method is to vulcanize the rubber layer between the spindle and the outer sleeve. However, the compactness of direct vulcanization extrusion is insufficient to meet the radial stiffness requirements of the rubber joint. The second method is to first wrap the rubber layer around the outer periphery of the spindle, and then extrude the spindle together with the rubber layer into the outer sleeve through an extrusion die.

[0003] However, in the existing technology, the extrusion fixture for the outer jacket and the rubber layer has poor concentricity accuracy between the outer jacket and the mandrel during the extrusion of the rubber layer, and the shaft cannot be stably fixed during the processing.

[0004] Therefore, we propose an extrusion mold for the outer casing of a rubber joint. Utility Model Content

[0005] The purpose of this invention is to provide an extrusion mold for a rubber joint outer sleeve, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rubber joint outer sleeve extrusion mold, comprising an extrusion head, a guide cylinder, and a base, wherein the extrusion head, guide cylinder, and base are arranged sequentially from top to bottom; a positioning groove is provided in the center of the top of the base; a connecting bracket located directly below the positioning groove is fixedly installed inside the base; swing rods are rotatably connected to both sides of the connecting bracket; a clamping head located above the connecting bracket is integrally connected to the top of the swing rod; a guide arc surface is integrally provided on the side of the swing rod; an unfolding spring is provided on the front and rear sides of the connecting bracket between the swing rods; a sliding block is slidably connected inside the connecting bracket; a connecting column is integrally connected to the center of the top of the sliding block; a top plate located between the two clamping heads is fixedly installed on the top of the connecting column; extrusion rollers located outside the connecting bracket are rotatably connected to both ends of the sliding block; a lifting spring is provided on the top of the sliding block; and the extrusion rollers are in rolling contact with the guide arc surface.

[0007] Optionally, the bottom of the extrusion head is provided with an extrusion groove, and the bottom of the extrusion head is integrally provided with an annular protrusion located outside the extrusion groove, and the annular protrusion is arranged coaxially with the extrusion groove.

[0008] Optionally, the diameter of the positioning groove is the same as the diameter of the extrusion groove, and the positioning groove, the annular protrusion, and the extrusion groove are arranged coaxially.

[0009] Optionally, the guide cylinder has a through groove with a diameter larger than the positioning groove inside, the bottom of the guide cylinder is inserted into the top of the base, and the diameter of the guide cylinder is the same as the diameter of the groove on the top of the base.

[0010] Optionally, the top of the base is provided with an annular groove, which is coaxially arranged with the positioning groove. The width of the annular groove is the same as the thickness of the annular protrusion. The annular groove is located directly below the annular protrusion, and a detachable protruding ring is provided inside the annular groove.

[0011] Optionally, the two ends of the deploying spring are respectively in close contact with the opposite surfaces of the two swing rods, and the middle part of the deploying spring is fixedly installed on the top of the front and rear sides of the connecting bracket.

[0012] Optionally, the top of the lifting spring is abutted against the bottom of the sliding block, the bottom of the lifting spring is fixedly installed inside the bottom of the connecting bracket, and the connecting column is slidably connected through the middle of the top of the connecting bracket.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The outer extrusion mold of the rubber joint, by setting a connecting bracket, when the rubber joint shaft is inserted into the positioning groove, the extrusion top plate pushes the connecting rod and the sliding block to move down, thereby causing the extrusion roller to move along the guide arc surface, and then pushing the swing rod to move closer to the center, so that the clamping head clamps from both sides of the shaft core, preventing the shaft core from shifting under the total pressure during the extrusion process.

[0015] 2. The extrusion mold for the outer sleeve of this rubber joint, by setting an extrusion head, a guide cylinder, and a base, fixes the bottom of the mandrel in the positioning groove on the base, then places the outer sleeve into the guide cylinder and fits it. The extrusion head is placed on top of the mandrel, and then the extrusion head is pressed to extrude the mandrel and rubber layer into the outer sleeve. When the top of the rubber layer is flush with the top of the guide cylinder, the annular protrusion corresponds to the rubber layer. Pressing the extrusion head further downwards moves the rubber layer down to below its proper position. Then, a corresponding protruding ring is installed in the annular groove on the base, causing the rubber layer to move upwards. With the cooperation and adjustment of the annular protrusion and the protruding ring, the rubber layer is extruded to its proper position within the outer sleeve, enabling precise extrusion of the rubber layer and thus improving vibration damping performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an outer extrusion mold for a rubber joint according to the present invention;

[0017] Figure 2 This is a schematic diagram of the connecting bracket of the outer extrusion mold for a rubber joint according to the present invention;

[0018] Figure 3 This is a schematic diagram of the sliding block of the extrusion die for a rubber joint according to the present invention.

[0019] In the diagram: 1. Extrusion head; 2. Guide cylinder; 3. Base; 4. Extrusion groove; 5. Annular protrusion; 6. Through groove; 7. Positioning groove; 8. Annular groove; 9. Connecting bracket; 10. Swing rod; 11. Clamping head; 12. Guide arc surface; 13. Unfolding spring; 14. Sliding block; 15. Connecting column; 16. Top plate; 17. Extrusion roller; 18. Lifting spring. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1 to 3 This utility model provides an extrusion mold for a rubber joint outer sleeve, including an extrusion head 1, a guide cylinder 2, and a base 3. The extrusion head 1, guide cylinder 2, and base 3 are arranged sequentially from top to bottom. A positioning groove 7 is provided in the middle of the top of the base 3. A connecting bracket 9 located directly below the positioning groove 7 is fixedly installed inside the base 3. A swing rod 10 is rotatably connected to both sides of the connecting bracket 9. A clamping head 11 located above the connecting bracket 9 is integrally connected to the top of the swing rod 10. A guide arc surface 12 is integrally provided on the side of the swing rod 10. An unfolding spring 13 located between the swing rods 10 is provided on the front and rear sides of the connecting bracket 9. A sliding block 14 is slidably connected inside the connecting bracket 9. 4. A connecting column 15 is integrally connected to the middle of the top. A top plate 16 located between two clamping heads 11 is fixedly installed on the top of the connecting column 15. The two ends of the sliding block 14 are rotatably connected to the extrusion rollers 17 located outside the connecting bracket 9. A lifting spring 18 is provided on the top of the sliding block 14. The extrusion rollers 17 roll in contact with the guide arc surface 12. By setting the connecting bracket 9, when the rubber joint shaft is inserted into the positioning groove 7, the extrusion top plate 16 pushes the connecting rod and the sliding block 14 to move down, thereby causing the extrusion rollers 17 to move along the guide arc surface 12, thereby pushing the swing rod 10 to move closer to the middle, so that the clamping heads 11 clamp from both sides of the shaft core, preventing the shaft core from shifting under the total pressure during the extrusion process.

[0022] The bottom of the extrusion head 1 is provided with an extrusion groove 4, and the bottom of the extrusion head 1 is integrally provided with an annular protrusion 5 located outside the extrusion groove 4. The annular protrusion 5 is coaxially arranged with the extrusion groove 4.

[0023] The diameter of the positioning groove 7 is the same as the diameter of the extrusion groove 4, and the positioning groove 7, the annular protrusion 5 and the extrusion groove 4 are arranged coaxially.

[0024] The guide cylinder 2 has a through groove 6 with a diameter larger than that of the positioning groove 7. The bottom of the guide cylinder 2 is inserted into the top of the base 3. The diameter of the guide cylinder 2 is the same as the diameter of the groove on the top of the base 3.

[0025] The top of the base 3 is provided with an annular groove 8, which is coaxially arranged with the positioning groove 7. The width of the annular groove 8 is the same as the thickness of the annular protrusion 5. The annular groove 8 is located directly below the annular protrusion 5. A detachable protruding ring is provided inside the annular groove 8.

[0026] The two ends of the spring 13 are in close contact with the opposite surfaces of the two swing rods 10, and the middle part of the spring 13 is fixedly installed on the top of the front and rear sides of the connecting bracket 9.

[0027] The top of the lifting spring 18 is abutted against the bottom of the sliding block 14, and the bottom of the lifting spring 18 is fixedly installed inside the bottom of the connecting bracket 9. The connecting column 15 is slidably connected to the middle of the top of the connecting bracket 9. By setting the extrusion head 1, the guide cylinder 2 and the base 3, the bottom of the mandrel is placed into the positioning groove 7 on the base 3 for fixation. The outer sleeve is placed into the guide cylinder 2 and fits against the guide cylinder 2. The extrusion head 1 is sleeved on the top of the mandrel. Then, the extrusion head 1 is pressed to extrude the mandrel and the rubber layer into the outer sleeve. When the top of the rubber layer is flush with the top of the guide cylinder 2, the annular protrusion 5 corresponds to the rubber layer. The extrusion head 1 is pressed down to make the rubber layer move down and below the position where the rubber layer should be. Then, the corresponding protrusion ring is installed in the annular groove 8 on the base 3 to make the rubber layer move up. With the cooperation and adjustment of the annular protrusion 5 and the protrusion ring, the rubber layer is extruded to the position where it should be in the outer sleeve, so that the rubber layer can be accurately extruded into place, thereby improving the vibration reduction performance.

[0028] Working principle:

[0029] When the rubber joint shaft is inserted into the positioning groove 7, the extrusion plate 16 pushes the connecting rod and the sliding block 14 downwards, thereby causing the extrusion roller 17 to move along the guide arc surface 12, which in turn pushes the swing rod 10 towards the center, so that the clamping head 11 clamps the shaft from both sides, preventing the shaft from shifting under the total pressure during the extrusion process. After the bottom of the mandrel is fixed in the positioning groove 7 on the base 3, the outer sleeve is placed inside the guide cylinder 2 and fits against the guide cylinder 2. The extrusion head 1 is fitted onto the top of the mandrel, and then the extrusion is pressed. The pressure head 1 presses the mandrel and rubber layer into the outer sleeve. When the top of the rubber layer is flush with the top of the guide cylinder 2, the annular protrusion 5 corresponds to the rubber layer. The pressure head 1 continues to press down, causing the rubber layer to move down and below its proper position. Then, the corresponding protruding ring is installed in the annular groove 8 on the base 3, causing the rubber layer to move up. With the cooperation and adjustment of the annular protrusion 5 and the protruding ring, the rubber layer is pressed into its proper position inside the outer sleeve, which can accurately press the rubber layer into place, thereby improving the vibration damping performance.

[0030] 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 rubber joint outer sleeve extrusion mold, comprising an extrusion head (1), a guide cylinder (2), and a base (3), characterized in that, The extrusion head (1), guide cylinder (2), and base (3) are arranged sequentially from top to bottom. A positioning groove (7) is provided in the middle of the top of the base (3). A connecting bracket (9) located directly below the positioning groove (7) is fixedly installed inside the base (3). A swing rod (10) is rotatably connected to both sides of the connecting bracket (9). A clamping head (11) located above the connecting bracket (9) is integrally connected to the top of the swing rod (10). A guide arc surface (12) is integrally provided on the side of the swing rod (10). The front and rear sides of the connecting bracket (9) are provided with There is a release spring (13) located between the swing rods (10), and a sliding block (14) is slidably connected inside the connecting bracket (9). A connecting column (15) is integrally connected to the middle of the top of the sliding block (14). A top plate (16) located between two clamping heads (11) is fixedly installed on the top of the connecting column (15). Squeeze rollers (17) located outside the connecting bracket (9) are rotatably connected to both ends of the sliding block (14). A lifting spring (18) is provided on the top of the sliding block (14). The squeeze roller (17) is in rolling contact with the guide arc surface (12).

2. The extrusion die for a rubber joint according to claim 1, characterized in that, The bottom of the extrusion head (1) is provided with an extrusion groove (4), and the bottom of the extrusion head (1) is integrally provided with an annular protrusion (5) located outside the extrusion groove (4), and the annular protrusion (5) is coaxially arranged with the extrusion groove (4).

3. The extrusion die for a rubber joint according to claim 2, characterized in that, The diameter of the positioning groove (7) is the same as the diameter of the extrusion groove (4), and the positioning groove (7), the annular protrusion (5) and the extrusion groove (4) are arranged coaxially.

4. The extrusion die for a rubber joint according to claim 1, characterized in that, The guide cylinder (2) has a through groove (6) with a diameter larger than that of the positioning groove (7) inside. The bottom of the guide cylinder (2) is inserted into the top of the base (3). The diameter of the guide cylinder (2) is the same as the diameter of the groove at the top of the base (3).

5. The extrusion die for a rubber joint according to claim 3, characterized in that, The base (3) has an annular groove (8) on its top. The annular groove (8) is coaxial with the positioning groove (7). The width of the annular groove (8) is the same as the thickness of the annular protrusion (5). The annular groove (8) is located directly below the annular protrusion (5). A detachable protruding ring is provided inside the annular groove (8).

6. The extrusion die for a rubber joint according to claim 1, characterized in that, The two ends of the unfolding spring (13) are in close contact with the opposite surfaces of the two swing rods (10), and the middle part of the unfolding spring (13) is fixedly installed on the top of the front and rear sides of the connecting bracket (9).

7. The extrusion die for a rubber joint according to claim 1, characterized in that, The top of the lifting spring (18) is abutted against the bottom of the sliding block (14), the bottom of the lifting spring (18) is fixedly installed inside the bottom of the connecting bracket (9), and the connecting column (15) is slidably connected to the middle of the top of the connecting bracket (9).

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