Press-fitting and turning-riveting method for rubber joints

Abstract

The invention relates to the technical field of flanging and riveting of damping devices, in particular to a press fitting flanging and riveting method for a rubber joint, which comprises the following steps: S1, arranging a flanging and riveting head, a connecting disc and a pressure head, and forming a profile groove in the flanging and riveting head, S2, placing the connecting disc on the flanging and riveting head, placing the rubber joint in a mounting hole of the connecting disc, placing the pressure head at the upper end of the rubber joint, s3, starting a pressing machine, driving a pressing head to apply pressure and pressing the rubber joint into the mounting hole of the connecting disc, and S4, in the process of pressing the rubber joint downwards, when the lower end of an outer sleeve of the rubber joint is in contact with a molded surface groove, the outer sleeve starts to be turned outwards until flanging of the outer sleeve is completed, and therefore press fitting and flanging riveting are conducted at the same time. And the stroke node after flanging is controlled by stopping the upper end of the outer sleeve and the upper end of the connecting disc. According to the scheme, production procedures can be reduced, production efficiency is improved, workpiece damage risks are reduced, and product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of riveting for vibration damping devices, and in particular provides a press-fit riveting method for a rubber joint. Background Art

[0002] The vibration damping device is mainly used to reduce the vibration and noise generated by the operation of transportation vehicles. The vibration damping device, such as a rubber joint, usually includes a mandrel / jacket, a jacket and a rubber body vulcanized between the mandrel and the jacket. During the production process of the rubber joint, the jacket of the rubber joint needs to be riveted so that the jacket surface of the rubber joint meets the design requirements and usage requirements. In the prior art, the following patents involve riveting devices for vibration damping joints: The invention patent application with the patent number "201710950846.5" and the patent name "Multi-tooth riveting device for installing and fixing the riveted flanging of spherical bearings" includes a supporting base, a seat ring, a through hole, an annular groove, an inner ring of a spherical bearing, an outer ring of a spherical bearing, an annular groove, and a periodic multi-tooth rotating rivet head. This invention uses a periodic multi-tooth rotating rivet head. The multi-tooth structure of the rivet head can reduce the riveting pressure and avoid the occurrence of harmful deformation. It has a simple structure and is easy to implement.

[0003] The invention patent with the patent number "202111329924.2" and the patent name "A riveting mold for automobile engine shock-absorbing components" includes a bottom plate and a top plate. The bottom plate is provided with a fixed mold and a riveting mechanism. The top plate is provided with a No. 1 cylinder and a movable mold. A plurality of sliding holes are opened on the outer ring of the fixed mold. The riveting mechanism is installed between the sliding holes and the bottom plate. The riveting mechanism includes a No. 2 cylinder and a push rod. This patent can avoid damage problems inside the riveting position.

[0004] The utility model patent with the patent number "202020023111.5" and the patent name "A flanging tooling for rubber joints" includes a lower mold and a flanging mold. A flanging mold is arranged above the lower mold. The flanging mold includes a flanging head, a connecting plate, a pressing head, and a through hole. The flanging head and the pressing head are connected by bolts below the two ends of the connecting plate. The through hole runs through the flanging head, the connecting plate, and the pressing head. The setting of the lower mold of the utility model is convenient for installing and fixing the rubber joint, which can ensure the vertical fixation of the rubber joint and the accuracy of the position of the rubber joint and the flanging mold.

[0005] The above patents can all be used for flanging metal parts, but the structure of the riveting device is relatively complex, and the pressing and riveting need to be carried out in multiple steps, which is labor-intensive, has many work steps, and has low production efficiency. Therefore, how to set up a press-fitting and riveting method for rubber joints to improve production efficiency, simplify production procedures, reduce production costs, shorten production cycles, and achieve continuous press-fitting and riveting and one-time molding is a problem that needs to be solved urgently. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a press-fitting and riveting method for rubber joints. Press-fitting and riveting can be performed continuously, which can reduce production steps, improve production efficiency, reduce workpiece movement, reduce labor intensity, reduce the risk of workpiece collision, and improve product quality.

[0007] The present invention provides a method for press-fitting and riveting a rubber joint, which specifically comprises the following steps: S1: a riveting head, a connecting plate and a pressing head are provided, and a profile groove is provided on the riveting head; S2: Place the connection plate on the rivet head, place the rubber joint in the mounting hole of the connection plate, and place the pressure head on the upper end of the rubber joint; S3: Start the press, drive the press head to apply pressure and press the rubber joint into the mounting hole of the connecting plate; S4: During the process of pressing down the rubber joint, when the lower end of the outer jacket of the rubber joint contacts the profile groove, the outer jacket begins to turn outward until the flanging of the outer jacket is completed; thereby, press-fitting and riveting are performed simultaneously.

[0008] Further, in S4, the travel node where the flanging is completed is controlled by stopping the upper end of the outer sleeve and the upper end of the connecting disk.

[0009] Furthermore, a limit platform is provided on the outer side of the upper end surface of the outer sleeve and extends outward, and the travel node where the flanging is completed in S4 is realized by the limit platform stopping at the upper end surface of the connecting disk.

[0010] Furthermore, the profile groove in S1 is provided on the riveting head, and the profile groove comprises a deformation section located below the inner end of the outer sleeve and an extension section extending to the inner side of the inner end of the outer sleeve.

[0011] Furthermore, the outer side of the lower end of the outer sleeve is located above the extension section. During the downward pressing of the rubber joint in S4, the outer side of the lower end of the outer sleeve is first accommodated in the extension section and gradually pressed into the deformation section until the flanging is completed.

[0012] Furthermore, the profile groove includes arc surface one, arc surface two and arc surface three from inside to outside, straight line surface one is arranged between arc surface one and arc surface two, and straight line surface two is arranged on the side of arc surface three away from arc surface two.

[0013] Furthermore, arc surface one is located on the inner side of the lower end of the outer sleeve. When the lower end of the outer sleeve contacts the rivet head, the lower end of the outer sleeve first contacts the arc surface one, and then is gradually pressed to the straight line surface one, arc surface two, arc surface three and straight line surface two.

[0014] Furthermore, a mounting groove located inside the profile groove is provided on the riveting head, and the depth of the mounting groove is greater than the depth of the profile groove.

[0015] Furthermore, a receiving groove for receiving the upper end of the inner sleeve and a crimping platform located outside the receiving groove and capable of pressing against the upper end surface of the outer sleeve are provided at the lower end of the pressing head.

[0016] Furthermore, a plurality of press-fitting holes for press-fitting the rubber joints are evenly distributed on the connection disk; and teeth are arranged on the connection disk on the circumferential outer sides of the press-fitting holes.

[0017] Compared with the prior art, the present invention can achieve the following beneficial effects: the present invention can realize continuous press-fitting and riveting of rubber joints, one-time molding, and the connection plate does not need to be flipped, which solves the technical problems in the prior art that the rubber joints need to be flipped before riveting after press-fitting, rivet heads with different inclination angles need to be used during riveting, riveting is performed in multiple steps, the connection plate is heavy, flipping is inconvenient, the labor intensity is high, the operation steps are many, and the production efficiency is low. The present invention can greatly reduce the production steps, improve the production efficiency, reduce the movement of the workpiece, reduce the labor intensity, reduce the risk of workpiece collision, and improve the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of a rubber joint provided according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a connection disk provided according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a press-fit riveting device provided according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of the profile groove provided according to an embodiment of the present invention.

[0019] The accompanying drawings include: outer sleeve 1, rubber body 2, outer sleeve 3, connecting plate 4, connecting plate 5, pressing head 6, riveting head 7, tooth portion 8, limiting platform 9, arc surface one 10, installation groove 11, profile groove 12, accommodating groove 13, arc surface two 14, arc surface three 15, straight line surface one 16, straight line surface two 17, accommodating groove 18, crimping platform 19, and press-fit hole 20. DETAILED DESCRIPTION

[0020] In the following, reference will be made to the Figure 1-4 Embodiments of the present invention are described. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the following Figure 1-4 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0022] A press-fit riveting method for a rubber joint, such as Figure 1 As shown, the rubber joint includes an outer sleeve 1, an inner sleeve 3 and a rubber body 2 vulcanized between the outer sleeve 1 and the inner sleeve 3. In this embodiment, the press-fitting and riveting of the rubber joint is mainly performed on the outer sleeve 1, and specifically includes the following steps: S1: A riveting head 7, a connecting plate 4 and a pressing head 6 are provided. A profile groove 12 is provided on the riveting head 7. The connecting plate 4 is used to install the rubber joint. The pressing head 6 is used to press the rubber joint into the connecting plate 4 and further perform a flanging operation on the jacket 1. The riveting head 7 is used to cooperate with the riveting of the jacket 1. Figure 3 As shown, a mounting groove 11 located inside the profile groove 12 is also provided on the rivet head 7, and the depth of the mounting groove 11 is greater than the depth of the profile groove 12. The mounting groove 11 is used to accommodate the lower end of the inner sleeve 3 and the inner end of the outer sleeve 1 during press-fitting, and the profile groove 12 is used for flanging the outer sleeve 1.

[0023] S2: Place the connection plate 4 on the riveting head 7, place the rubber joint in the mounting hole of the connection plate 4, and place the pressing head 6 on the upper end of the rubber joint. A plurality of pressing holes 20 for pressing the rubber joint are evenly distributed on the connection plate 4, such as Figure 2 As shown, in this embodiment, there are three groups of press-fit holes 20, each group of press-fit holes 20 includes two press-fit holes 20, and a rubber joint can be installed in each press-fit hole 20. The rubber joints in the connecting holes 20 are as shown in FIG. Figure 2 As shown at A in the middle. The connecting disc 4 is provided with a tooth portion 8 on the circumferential outer side of the press-fit hole 20. When the rubber joint press-fit flange is manufactured and installed on the vehicle body, the two connecting discs 4 are mounted on the connecting rod, and the two connecting discs 4 are connected by the tooth portions 8 on the two connecting discs 4.

[0024] S3: Start the press, drive the pressure head 6 to apply pressure and press the rubber joint into the mounting hole of the connecting plate 4 in the direction shown by B. A receiving groove 18 and a crimping platform 19 are provided at the lower end of the pressure head 6. The receiving groove 18 is used to accommodate the upper end of the inner sleeve 3. The crimping platform 19 is located on the outside of the receiving groove 18. The crimping platform 19 can be pressed tightly against the upper end surface of the outer sleeve 1, so that the press 6 can apply downward loading pressure to the rubber joint.

[0025] S4: During the process of pressing down the rubber joint, when the lower end of the outer sleeve 1 of the rubber joint contacts the profile groove 12, the outer sleeve 1 begins to turn outward until the flanging of the outer sleeve 1 is completed, thereby realizing simultaneous press-fitting and riveting. During the process of pressing down the rubber joint, the lower end of the inner sleeve 3 is accommodated in the accommodation groove 13. Among them, the travel node where the flanging is completed is controlled by stopping the upper end of the outer sleeve 1 and the upper end of the connecting disk 4. Specifically, a limit platform 9 is provided at the outer end of the upper end surface of the outer sleeve 1 extending outward, and the travel node where the flanging is completed is achieved by the limit platform 9 stopping at the upper end surface of the connecting disk 4. The upper end surface of the connecting disk 4 is as shown in FIG. Figure 3As shown in D in the middle.

[0026] The profile groove 12 in S1 is opened on the riveting head 7, and the profile groove 12 includes a deformation section located below the inner end of the outer sleeve 1 and an extension section extending to the inner side of the inner end of the outer sleeve 1. The outer side of the lower end of the outer sleeve 1 is located above the extension section. Figure 3 As shown at C in the middle, during the downward pressing process of the rubber joint in S4, the outer side of the lower end of the outer sleeve 1 is first accommodated in the extension section, and then gradually pressed into the deformation section until the flanging is completed.

[0027] like Figure 4 As shown, the profile groove 12 includes arc surface 10, arc surface 2 14 and arc surface 3 15 from inside to outside, and a straight line surface 16 is provided between the arc surface 10 and the arc surface 2 14, and a straight line surface 2 17 is provided on the side of the arc surface 3 15 away from the arc surface 2 14. The shape of the profile groove 12 controls the flanging shape of the outer jacket 1. The arc surface 10 is located inside the lower end of the outer jacket 1. When the lower end of the outer jacket 1 contacts the riveting head 7, the lower end of the outer jacket 1 first contacts the arc surface 10, and then gradually presses to the straight line surface 1 16, the arc surface 2 14, the arc surface 3 15 and the straight line surface 2 17. The arc surface 10 is provided to adapt to the profile of the outer jacket 1. The profile groove 12 is used to realize continuous and complete riveting of the outer jacket 1, and one-time molding is realized. Those skilled in the art can also set profile grooves 12 of other profiles.

[0028] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0029] The above specific implementations of the present invention do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A press-fit riveting method for a rubber joint, characterized in that: The steps include: S1: a riveting head (7), a connecting plate (4) and a pressing head (6) are provided, and a profile groove (12) is provided on the riveting head (7); S2: placing the connection plate (4) on the riveting head (7), placing the rubber joint in the mounting hole of the connection plate (4), and placing the pressing head (6) on the upper end of the rubber joint; S3: starting the press, driving the pressing head (6) to apply pressure and press the rubber joint into the mounting hole of the connecting plate (4); S4: During the process of pressing the rubber joint downward, when the lower end of the outer sleeve (1) of the rubber joint contacts the profile groove (12), the outer sleeve (1) begins to turn outward until the flange of the outer sleeve (1) is completed; thereby, press-fitting and riveting are performed simultaneously.

2. The press-fit riveting method for rubber joints according to claim 1, characterized in that: In S4, the travel node at which the flanging is completed is controlled by stopping the upper end of the outer sleeve (1) and the upper end of the connecting plate (4).

3. The press-fit riveting method for rubber joints according to claim 2, characterized in that: A limit platform (9) is provided on the outer side of the upper end surface of the outer sleeve (1) and extends outward, and the travel node at which the flanging is completed in S4 is achieved by the limit platform (9) stopping at the upper end surface of the connecting disk (4).

4. The press-fit riveting method for rubber joints according to claim 3, characterized in that: The profile groove (12) in S1 is formed on the riveting head (7), and the profile groove (12) comprises a deformation section located below the inner end of the outer sleeve (1) and an extension section extending to the inner side of the inner end of the outer sleeve (1).

5. The press-fit riveting method for rubber joints according to claim 4, characterized in that: The outer side of the lower end of the outer sleeve (1) is located above the extension section. During the downward pressing of the rubber joint in S4, the outer side of the lower end of the outer sleeve (1) is first accommodated in the extension section and then gradually pressed into the deformation section until the flanging is completed.

6. The press-fit riveting method for rubber joints according to claim 5, characterized in that: The profile groove (12) comprises, from the inside to the outside, an arc surface one (10), an arc surface two (14) and an arc surface three (15) in sequence; a straight surface one (16) is provided between the arc surface one (10) and the arc surface two (14); and a straight surface two (17) is provided on a side of the arc surface three (15) away from the arc surface two (14).

7. The press-fit riveting method for rubber joints according to claim 6, characterized in that: The arc surface one (10) is located inside the lower end of the outer sleeve (1). When the lower end of the outer sleeve (1) contacts the riveting head (7), the lower end of the outer sleeve (1) first contacts the arc surface one (10) and then gradually presses to the straight line surface one (16), the arc surface two (14), the arc surface three (15) and the straight line surface two (17).

8. The press-fit riveting method for rubber joints according to claim 7, characterized in that: The riveting head (7) is also provided with a mounting groove (11) located inside the profile groove (12), and the depth of the mounting groove (11) is greater than the depth of the profile groove (12).

9. The press-fit riveting method for rubber joints according to claim 8, characterized in that: A receiving groove (18) for receiving the upper end of the inner sleeve (3) and a crimping table (19) located outside the receiving groove (18) and capable of being pressed against the upper end surface of the outer sleeve (1) are provided at the lower end of the pressing head (6).

10. The press-fit riveting method for rubber joints according to claim 9, characterized in that: A plurality of press-fitting holes (20) for press-fitting rubber joints are evenly distributed on the connection disk (4); and teeth (8) are provided on the connection disk (4) on the circumferential outer sides of the press-fitting holes (20).

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