Spherical hinge extrusion device

Abstract

The utility model discloses a spherical hinge extrusion device which comprises a pressing machine provided with an upper pressing plate and a lower pressing plate, an extrusion ring provided with an extrusion through hole, a support provided with a containing cavity, an extrusion head matched with the top side of a spherical hinge metal outer sleeve, and a positioning guide ring arranged at the top of the support in a sleeving mode. A guide step is arranged between the bottom of the positioning guide ring and the top of the support. The positioning guide ring is arranged at the top of the extrusion ring in a sleeving manner, and the guide through hole matched with the spherical hinge metal outer sleeve is formed in the positioning guide ring, so that the spherical hinge to be extruded can flexibly penetrate through the guide through hole, and it is ensured that the guide through hole and the extrusion through hole are coaxial; and the coaxiality of the external metal jacket and the metal mandrel can be ensured, so that the positioning accuracy is improved, and the product percent of pass and the extrusion efficiency during extrusion of the spherical hinge are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbing parts, in particular to a ball joint extrusion device. Background Art

[0002] The ball joint is a rubber elastic connection element installed on the primary and secondary guide rods, hangers, swing arms, motor suspensions, hydraulic vibration reduction and other systems of various vehicle bogies. It is suitable for various high-speed railways, trunk railways, subways, light rails, automobiles, engineering machinery and other vehicles at home and abroad. It has flexible connection and elastic positioning functions. When the body is subjected to complex load conditions such as radial, torsion and deflection, the radial, axial, deflection and torsion loads are borne through the deformation of the rubber inside the rod end ball joint, thereby ensuring the smooth operation of the vehicle system and improving the safety and comfort of the vehicle.

[0003] The ball joint generally includes a metal jacket, a rubber layer and a metal mandrel. The metal jacket and the metal mandrel are coated with adhesive, which is then vulcanized and bonded to the rubber under high temperature and high pressure after drying. After the ball joint is processed, the rubber layer will cool and shrink; the vulcanization stress and shrinkage stress inside the rubber layer will greatly shorten the service life of the ball joint. In order to eliminate the vulcanization stress and shrinkage stress inside the rubber layer, the ball joint usually needs to be extruded, that is, the outer diameter of the metal jacket of the ball joint is reduced to squeeze the internal rubber layer.

[0004] The existing extrusion device usually includes a support for placing the ball joint, an extrusion ring for extruding the ball joint, and an extrusion head placed on the top side of the ball joint metal jacket, and an extrusion through hole slightly smaller than the outer diameter of the ball joint metal jacket is provided in the middle of the extrusion ring. During extrusion, the assembled support, extrusion ring, ball joint and extrusion head are first placed on the lower plate of the press, and the upper plate of the press is operated to press on the extrusion head, and the ball joint is squeezed through the extrusion through hole in the middle of the extrusion ring through the extrusion head and falls into the upper plate in the support accommodating cavity area; then the upper plate of the press is operated to lift, remove the extrusion head, extrusion ring and support, take out the extruded ball joint, and then extrude the next ball joint. The whole process requires frequent movement of the support, extrusion ring and extrusion head, which is laborious and time-consuming; and when the ball joint is directly placed on the extrusion through hole in the middle of the extrusion ring above the support, the verticality of the outer circle of the ball joint metal jacket and the end face of the extrusion ring cannot be well controlled, which easily affects the coaxiality of the ball joint metal jacket and the extrusion ring, resulting in the ball joint metal jacket being crushed and scrapped. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a ball joint extrusion device with accurate positioning in order to solve the problem that the ball joint extrusion device in the prior art is easily scrapped due to the inaccurate positioning of the ball joint.

[0006] The technical solution of the utility model is to construct a ball joint extrusion device, including a press provided with an upper pressing plate and a lower pressing plate, an extrusion ring provided with an extrusion through hole, and a support provided with a receiving cavity. 、 And an extrusion head that matches the top side of the ball-jointed metal sleeve, also includes a positioning guide ring sleeved on the top of the extrusion ring, the positioning guide ring is provided with a guide through hole that matches the ball-jointed metal sleeve, and mutually matching guide steps are provided between the bottom of the positioning guide ring and the top of the extrusion ring; when the positioning guide ring is matched with the top of the extrusion ring through the guide step, the guide through hole is coaxial with the extrusion through hole.

[0007] Furthermore, the guide step is configured to be in a frustum shape so that the positioning guide ring can be quickly positioned on the top of the support.

[0008] Furthermore, mutually matching positioning steps are provided between the extrusion ring and the support, and the extrusion ring and the support are combined together through the positioning steps so as to enable rapid positioning when the extrusion ring is replaced.

[0009] Furthermore, the support is fixedly mounted on the top of the lower pressing plate, and a hole for taking out items is provided on the side wall of the accommodating cavity, so that taking out items is more convenient without moving the bulky support.

[0010] Furthermore, the extrusion head is fixed at the bottom of the upper pressing plate, which facilitates the operation of the press machine. The upper pressing plate directly drives the extrusion head to extrude the ball joint. There is no need to manually move the extrusion head, and the operation is more convenient and labor-saving.

[0011] Furthermore, the extrusion head is fixed to the bottom of the upper pressing plate through a detachable connecting piece so as to adapt to ball joints of different specifications.

[0012] Furthermore, a countersunk hole matching the top side of the ball joint is provided at the bottom of the extrusion head, so that the force exerted by the extrusion head on the ball joint is more uniform.

[0013] The implementation of the ball joint extrusion device of the utility model has the following beneficial effects: by arranging a positioning guide ring sleeve on the top of the support, and arranging a guide through hole matching the metal jacket of the ball joint in the positioning guide ring, the ball joint to be extruded can flexibly pass through the guide through hole; by arranging mutually matching guide steps between the bottom of the positioning guide ring and the top of the support, the positioning guide ring can be quickly positioned on the top of the support, and ensure that the guide through hole and the extrusion through hole are coaxial. When the ball joint is extruded from the guide through hole into the extrusion through hole, the coaxiality of its outer metal jacket and the metal core shaft can be guaranteed, thereby improving the positioning accuracy and improving the product qualification rate and extrusion efficiency during ball joint extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1a The figure is a front view of a preferred embodiment of the ball joint extrusion device of the utility model;

[0016] Figure 1b The figure is a stereogram of a preferred embodiment of the ball joint extrusion device of the utility model;

[0017] Figure 1c Shown is an exploded view of a preferred embodiment of the ball joint extrusion device of the utility model;

[0018] Figure 2 The figure shows the structure schematic diagram of the preferred embodiment of the ball joint extrusion device of the utility model before the ball joint extrusion;

[0019] Figure 3 The figure shows a schematic structural diagram of a preferred embodiment of the ball joint extrusion device of the utility model during ball joint extrusion;

[0020] Figure 3a Shown Figure 3 A magnified view of part I;

[0021] Figure 4 Shown is a schematic structural diagram of a preferred embodiment of the ball joint extrusion device of the utility model after ball joint extrusion. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] like Figure 1a , 1bAs shown in 1c, 2, 3, 3a, and 4, in a preferred embodiment of the ball joint extrusion device of the utility model, it includes a press 10 provided with an upper pressing plate 11 and a lower pressing plate 12, a support 20, an extrusion ring 24, an extrusion head 30, and a positioning guide ring 40. Among them, the extrusion ring 24 is provided with an extrusion through hole 21 for extruding the ball joint metal jacket 1a, and the aperture of the extrusion through hole 21 is smaller than the outer diameter of the ball joint metal jacket 1a. A receiving cavity 22 is provided at the bottom of the support, and a removal hole 23 is provided on the side wall of the receiving cavity. The receiving cavity 22 is used to receive the extruded ball joint 1, and the removal hole 23 facilitates the removal of the extruded ball joint without moving the bulky support 20. The support 20 is arranged on the top of the lower pressing plate 12, and the support 20 is preferably fixedly mounted on the top of the lower pressing plate 12 by fasteners such as bolts.

[0024] In this preferred embodiment, the bottom of the extrusion head 30 is matched with the top of the ball joint metal jacket 1a, so that when the extrusion head 30 is pressed down, the pressure of the extrusion head 30 just acts on the top end surface of the ball joint metal jacket 1. Preferably, a countersunk hole 31 is set at the bottom of the extrusion head 30, and the countersunk hole 31 matches the top side 1b of the ball joint, so that the bottom end of the extrusion head 30 matches the top of the ball joint metal jacket 1a, and the metal core shaft 1c protruding from the top of the ball joint is just located in the countersunk hole 31; when the extrusion head 30 is pressed down, the pressure of the extrusion head 30 acts on the top of the ball joint metal jacket 1a, and the ball joint metal core shaft 1c is not subjected to force. Preferably, the extrusion head 30 is fixedly connected to the bottom of the upper pressing plate 11, which is convenient for the operation of the press machine to directly drive the extrusion head 30 to extrude the ball joint 1 through the upper pressing plate 11, and there is no need to manually move the extrusion head, which is more convenient and labor-saving to operate. It is best to set the extrusion head 30 to be fixed to the bottom of the upper pressing plate 11 by a detachable connection such as a bolt, so that the extrusion head 30 can be quickly replaced according to the ball joint 1 of different specifications.

[0025] A guide hole 41 is provided on the positioning guide ring 40, and the guide hole 41 matches the ball joint metal jacket 1a, ensuring that when the ball joint 1 is inserted into the guide hole 41, the ball joint metal jacket 1a and the guide hole 41 are exactly coaxial. Specifically, the aperture of the guide hole 41 can be set to be slightly larger than the outer diameter of the ball joint metal jacket 1a. Preferably, a matching guide step 42 is provided between the bottom of the positioning guide ring 40 and the top of the extrusion ring 24; and ensure that when the positioning guide ring and the top of the extrusion ring 24 are matched through the guide step 42, the guide hole 41 is coaxial with the extrusion hole 21; and ensure that when the ball joint 1 is placed in the guide hole 41, the ball joint metal jacket 1a is coaxial with the extrusion hole 21, and when the extrusion head 30 extrudes the ball joint 1, it can ensure that the ball joint metal jacket 1a will not be eccentric, so as to ensure that the ball joint metal jacket 1a after extrusion will not be eccentrically deformed and affect the quality of the ball joint. It is best to set the guide step 42 to a cone shape, so that when the positioning guide ring 40 is placed on the top of the extrusion ring 24, the positioning guide ring 40 can be quickly positioned by relying on the cone-shaped guide step 42 to ensure that the guide hole 41 is coaxial with the extrusion hole 21, thereby quickly positioning the positioning guide ring 40 on the top of the extrusion ring 24.

[0026] In this preferred embodiment, the extrusion ring is preferably made of a material with high hardness, and the ball joint metal jacket is made of a material with good elongation. Preferably, a mutually matching positioning step 26 is provided between the extrusion ring 24 and the support 20, and the extrusion ring and the support are combined together through the positioning step so that the extrusion ring can be quickly positioned on the top of the support when the extrusion ring is replaced.

[0027] In this preferred embodiment, the aperture of the guide through hole 41 is slightly larger than the outer diameter of the ball joint metal jacket 1a, the aperture of the extrusion through hole 21 is slightly smaller than the outer diameter of the ball joint metal jacket 1a, and the outer diameter of the extrusion head is slightly smaller than the aperture of the extrusion through hole 21, so that the extrusion head 30 can extrude the ball joint 1 through the extrusion through hole 21.

[0028] like Figure 2 As shown, before the ball joint 1 is extruded, the support 20 is fixed on the top of the lower pressing plate 12, and the extrusion head 30 is fixed on the bottom of the upper pressing plate 11. The extrusion ring 24 matching the specifications of the ball joint is sleeved on the support 20, and the extrusion ring 24 is above the support 20 through the positioning step 26; then the positioning guide ring 40 is sleeved on the top of the extrusion ring 24, and the positioning guide ring 40 is positioned on the top of the extrusion ring 24 through the guide step 42, at this time, the guide through hole 41 of the positioning guide ring is coaxial with the extrusion through hole 21 of the extrusion ring; the ball joint to be extruded is placed in the guide through hole 41 of the positioning guide ring, so that the ball joint metal jacket 1a is coaxial with the guide through hole 41.

[0029] like Figure 3 , 3aAs shown, when squeezing the ball joint 1, the press is operated to control the upper pressing plate 11 to drive the extrusion head 30 to descend to the top of the ball joint. At this time, the extrusion head 30 is just pressed on the top of the ball joint metal jacket 1a; the extrusion head 30 is continuously pressed down, and the ball joint metal jacket 1a is pressed into the extrusion through hole 21 by the extrusion head, so that the outer diameter of the metal jacket 1a is reduced, thereby squeezing the rubber layer in the ball joint metal jacket and eliminating its internal stress.

[0030] like Figure 4 As shown, after the ball joint is extruded, the extrusion head 30 completely passes through the extrusion through hole 21, and the ball joint 1 after extrusion falls into the accommodating cavity 22. After the ball joint after extrusion is taken out from the taking hole 23, the next ball joint can be extruded.

[0031] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work, any modifications, equivalent substitutions, improvements, etc. made should be included in the protection scope of the present invention.

Claims

1. A ball joint extrusion device, comprising a press having an upper pressing plate and a lower pressing plate, an extrusion ring having an extrusion through hole, and a support having an accommodating cavity 、 and an extrusion head matched with the top side of the ball joint metal jacket, characterized in that: It also includes a positioning guide ring sleeved on the top of the extrusion ring, the positioning guide ring is provided with a guide through hole matching the ball joint metal sleeve, and mutually matching guide steps are provided between the bottom of the positioning guide ring and the top of the extrusion ring; when the positioning guide ring is matched with the top of the extrusion ring through the guide step, the guide through hole is coaxial with the extrusion through hole.

2. The ball joint extrusion device according to claim 1, characterized in that: The guide step is arranged in a frustum shape.

3. The ball joint extrusion device according to claim 1, characterized in that: A mutually matching positioning step is provided between the extrusion ring and the support, and the extrusion ring and the support are combined together through the positioning step.

4. The ball joint extrusion device according to claim 1, characterized in that: The support is fixedly mounted on the top of the lower pressing plate, and a take-out hole is provided on the side wall of the accommodating cavity.

5. The ball joint extrusion device according to claim 1, characterized in that: The extrusion head is fixed on the bottom of the upper pressing plate.

6. The ball joint extrusion device according to claim 5, characterized in that: The extrusion head is fixed to the bottom of the upper pressing plate via a detachable connecting piece.

7. The ball joint extrusion device according to claim 5, characterized in that: The bottom of the extrusion head is provided with a countersunk hole matching the top side of the ball joint.

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