Efficient necking device for vehicle frame bushing production

Abstract

The efficient necking device comprises a central pipe, the middle section of the central pipe is sleeved with a metal inner cylinder, the two ends of the central pipe are slidably connected with inner abutting covers, the inner abutting covers are connected with blocking covers through telescopic springs, and the end, located on the outer sides of the blocking covers, of the central pipe is in threaded connection with a locking ring sleeve; the two end outer pipes and the necking assembly are arranged between the two blocking covers, the two end outer pipes are located on the two sides of the center pipe correspondingly, the distance between the two blocking covers is conveniently adjusted, so that the sinking degree of the elastic concave arc plate is controllably changed, efficient adjustment of the necking structure of a blank is successfully achieved, and the necking structure of the blank is effectively adjusted. The two necking assemblies form an annular body, the annular body is rotationally arranged on the rotating ring sleeve and can be taken out from the two sides of the blank, the efficiency of taking the blank out of the device is greatly improved, the metal inner cylinder and the blank are taken out at the same time, the metal inner cylinder does not need to be installed on the blank again, and the production efficiency of the frame bushing is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts manufacturing equipment, in particular to a high-efficiency necking device for producing vehicle frame bushings. Background Art

[0002] Frame bushings are key components in the automobile chassis system. They are mainly used to connect and buffer vibration and impact between the frame and suspension system, engine bracket and other components. They are generally composed of inner and outer metal sleeves and rubber layers.

[0003] At present, in the actual production process of frame bushings, the rubber layer is necked according to design requirements, that is, the middle part of the outer side of the rubber layer is made concave. In the prior art, the raw rubber is generally molded into a blank with a necking structure through a mold with a concave structure, and then vulcanized to produce a necked rubber layer, and then the necked rubber layer is press-fitted or bonded with a metal inner tube and a metal outer tube to form a frame bushing.

[0004] However, since the recessed structure on the mold is fixed, a new mold is required each time the necking structure on the blank is adjusted, which not only increases the production cost but also makes the operation cumbersome. At the same time, when the existing mold is being removed from the material, the mold and the blank are easily adhered, which reduces the speed of removing the blank, thereby reducing the production efficiency of the frame bushing, and even causing the production yield of the frame bushing to decrease due to deformation caused by cooling of the blank. Therefore, an efficient necking device for the production of frame bushings is proposed. Summary of the invention

[0005] The object of the present invention is to provide a high-efficiency necking device for producing vehicle frame bushings to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an efficient necking device for producing vehicle frame bushings, comprising a center tube, a metal inner tube is sleeved on the middle section of the center tube, inner abutment covers are slidably connected to both ends of the center tube, the inner abutment covers are connected to blocking covers via telescopic springs, the end of the center tube is located on the outer side of the blocking cover and is threadedly connected to a locking ring sleeve, an end outer tube and a necking assembly are arranged between the two blocking covers, two end outer tubes are arranged and are respectively located on both sides of the center tube, and two necking assemblies are arranged and are both located in the middle section of the center tube and form an annular body;

[0007] The necking component comprises an elastic concave arc plate, a side arc plate and a bottom arc plate. Two side arc plates are provided and are located on both sides of the elastic concave arc plate. Two bottom arc plates are provided and are located on the outer sides of the side arc plates.

[0008] Preferably: the outer side surface of the end outer tube is threadedly connected with a swivel sleeve, the necking assembly is located between the two swivel sleeves, the telescopic spring sleeve is arranged on the central tube and does not contact it, and the blocking cover is slidably connected to the outer side surface of the central tube.

[0009] Preferably, a limiting ring groove is provided on a side of the swivel sleeve facing the necking assembly, and an end of the bottom arc plate is located in the limiting ring groove.

[0010] Preferably, a plurality of side openings are evenly formed on both sides of the central tube around its central axis, and pistons are provided at both ends of the inner side surface of the central tube.

[0011] Preferably, the piston member comprises a piston head and a piston rod, the piston head is configured to be disc-shaped, and the diameter of the piston head is equal to the inner diameter of the central tube.

[0012] Preferably, a plurality of radial holes are evenly formed on the arc inner side surface of the inner cover around its central axis, and the radial holes penetrate to the arc outer side surface of the inner cover.

[0013] Preferably, an end notch is provided at the edge of one side of the inner cover facing the metal inner tube and located at the radial channel, and the radial channel is connected to the end notch.

[0014] Preferably, a T-shaped rod is provided on the arc outer side surface of the swivel sleeve.

[0015] Preferably, the inner diameter of the side arc plate is equal to the inner diameter of the end outer tube, and the diameter of the inner abutment cover is equal to the inner diameter of the side arc plate.

[0016] Preferably, the diameter of the blocking cover is larger than the outer diameter of the end outer tube.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The device utilizes the convenient adjustment of the distance between the two baffles through the setting of the necking component, so that the degree of depression of the elastic concave arc plate can be controllably changed, and the efficient adjustment of the necking structure of the blank is successfully realized. The two necking components constitute an annular body, which can be rotatably set on the swivel sleeve and can be taken out from both sides of the blank, which greatly improves the efficiency of taking out the blank from the device, and thus greatly improves the production efficiency of the frame bushing. The metal inner cylinder and the blank are taken out at the same time, so that the blank does not need to be installed with the metal inner cylinder again, which further improves the production efficiency of the frame bushing. The structure is exquisite and efficient, and is suitable for promotion and application in the production process of frame bushings.

[0019] 2. The device, through the arrangement and cooperation of the center tube, the side opening, the piston member, etc., utilizes the arrangement of the radial channels and the end slots to push the piston member to slide in the center tube, so that the gas is blown into the upper and lower end surfaces of the blank through the radial channels and the end slots to form an air layer, which is convenient for the separation of the inner cover and the blank, thereby greatly improving the speed of removing the blank from the device, facilitating the subsequent vulcanization operation, and further improving the production efficiency of the frame bushing. The structural arrangement is simple and efficient, and is suitable for promotion and application in the production process of frame bushings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0023] Figure 3 An exploded view of the present invention;

[0024] Figure 4 It is an exploded view of another perspective of the present invention;

[0025] Figure 5 It is an overall cross-sectional view of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the inner cover in the present invention;

[0027] Figure 7 for Figure 6 A magnified schematic diagram of center A.

[0028] In the figure: 1, center tube; 11, side opening; 2, necking assembly; 21, elastic concave arc plate; 22, side arc plate; 23, bottom arc plate; 3, end outer tube; 4, swivel sleeve; 41, T-shaped rod; 42, limiting ring groove; 5, blocking cover; 51, inner cover; 52, telescopic spring; 53, radial channel; 54, end notch; 6, locking ring sleeve; 7, piston member; 8, metal inner tube. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] Reference Figure 1-7 As shown, the present invention provides a technical solution for a high-efficiency necking device for producing a vehicle frame bushing:

[0033] Reference Figure 1-3 As shown, a high-efficiency necking device for the production of frame bushings includes a center tube 1, which is in the shape of a hollow cylindrical tube. The middle section of the center tube 1 is sleeved with a metal inner tube 8, wherein it should be supplemented that the metal inner tube 8 is a component of the frame bushing, which slides into the middle section from the end of the center tube 1, and both ends of the center tube 1 are slidably connected with inner abutment covers 51, wherein the inner abutment cover 51 abuts against the metal inner tube 8 on one side facing the metal inner tube 8, and the inner abutment cover 51 is connected to a baffle cover 5 via a telescopic spring 52, wherein the two ends of the telescopic spring 52 are respectively fixedly connected to the inner abutment cover 51 and the baffle cover 5, and the end of the center tube 1 is located on the outer side of the baffle cover 5 and is threadedly connected with a locking ring sleeve 6, wherein it should be supplemented that the outer side surface of the end of the center tube 1 is provided with a thread, and the inner side surface of the locking ring sleeve 6 is provided with a thread matching therewith, so the locking ring sleeve 6 is threadedly connected to the center tube 1, refer to Figure 3As shown, the locking ring sleeve 6 includes an internal threaded ring sleeve, and the outer side surface of the internal threaded ring sleeve is provided with three levers at equal intervals around its central axis, so as to facilitate the user to rotate the locking ring sleeve 6. An end outer tube 3 and a necking assembly 2 are provided between the two blocking covers 5. Two end outer tubes 3 are provided and are respectively located on both sides of the central tube 1, and two necking assemblies 2 are provided and are both located in the middle section of the central tube 1 and form an annular body.

[0034] Reference Figure 3 and Figure 4 As shown, the necking component 2 includes an elastic concave arc plate 21, a side arc plate 22 and a bottom arc plate 23. Two side arc plates 22 are provided and are located on both sides of the elastic concave arc plate 21. Two bottom arc plates 23 are provided and are located on the outside of the side arc plates 22. It should be supplemented that the elastic concave arc plate 21 is elastic, and is concave toward the central tube 1. As the side arc plates 22 on both sides of the elastic concave arc plate 21 approach each other, the elastic concave arc plate 21 is increasingly concave toward the central tube 1. Correspondingly, when the side arc plates 22 on both sides of the elastic concave arc plate 21 move away from each other, the depression amplitude of the elastic concave arc plate 21 will decrease.

[0035] Reference Figure 5 As shown, the outer side surface of the end outer tube 3 is threadedly connected with a swivel sleeve 4, and the necking assembly 2 is located between the two swivel sleeves 4. It should be additionally explained that the outer side surface of the end outer tube 3 is provided with a thread, and the inner side surface of the swivel sleeve 4 is also provided with a matching thread, so the swivel sleeve 4 is threadedly connected to the end outer tube 3.

[0036] It should be noted that, refer to Figure 5 As shown, the telescopic spring 52 is sleeved on the central tube 1 without contacting it, and the blocking cover 5 is slidably connected to the outer side surface of the central tube 1.

[0037] Reference Figure 4 and Figure 5 As shown, in an optional embodiment: a limiting annular groove 42 is opened on the side of the swivel sleeve 4 facing the necking assembly 2, and the end of the bottom arc plate 23 is located in the limiting annular groove 42, wherein it should be additionally explained that the limiting annular groove 42 passes through part of the inner side surface of the swivel sleeve 4, so that the bottom arc plate 23 is placed between the outer side of the end outer tube 3 and the inner side of the limiting annular groove 42.

[0038] Reference Figure 4 As shown, in an optional embodiment: a plurality of side openings 11 are evenly opened on both sides of the central tube 1 around its central axis, and piston members 7 are provided at both ends of the inner side surface of the central tube 1, wherein it should be additionally explained that the inner cover 51 is slidably adjusted at the side openings 11 opened on the central tube 1 to adapt to metal inner tubes 8 of different lengths.

[0039] Among them, refer to Figure 5As shown, in an optional embodiment: the piston member 7 includes a piston head and a piston rod, the piston head is configured to be disc-shaped, and the diameter of the piston head is equal to the inner diameter of the central tube 1.

[0040] Reference Figure 6 As shown, a plurality of radial holes 53 are evenly formed on the arc inner side surface of the inner cover 51 around its central axis, and the radial holes 53 penetrate to the arc outer side surface of the inner cover 51 .

[0041] It should be additionally explained that an end notch 54 is provided at the edge of the side of the inner cover 51 facing the metal inner tube 8 and located at the radial channel 53 , and the radial channel 53 and the end notch 54 are in communication.

[0042] Reference Figure 4 As shown, in an optional embodiment: a T-shaped rod 41 is provided on the arc outer side surface of the swivel sleeve 4 to prevent the device from rolling when placed, and at the same time, facilitate the user to rotate the swivel sleeve 4.

[0043] Reference Figure 5 As shown, the inner diameter of the side arc plate 22 is equal to the inner diameter of the end outer tube 3, the diameter of the inner cover 51 is equal to the inner diameter of the side arc plate 22, and the diameter of the cover 5 is larger than the outer diameter of the end outer tube 3. It should be noted that the area outside the metal inner tube 8, between the two inner covers 51, and between the necking assembly 2 and the inner side of the end outer tube 3 are used to fill raw rubber, and the inner diameters of the side arc plate 22 and the end outer tube 3 are equal to the diameter of the inner cover 51, so that the outer side surface of the shaped raw rubber is flat, reducing the subsequent flattening operation on the outer side surface of the shaped raw rubber.

[0044] It should be noted that the shaped raw rubber can serve as the rubber layer in the frame bushing after vulcanization, and the vulcanization process is an existing technology and will not be elaborated on here.

[0045] The working principle of the device is now explained through the use process: First, the basic structure of the frame bushing is briefly introduced. The frame bushing includes a metal inner tube 8, a rubber layer and a metal outer tube, wherein the rubber layer is located between the metal inner tube 8 and the metal outer tube, and is used to absorb vibrations in all directions. In the actual production process of the frame bushing, the rubber layer is necked according to design requirements, that is, the middle part of the outer side of the rubber layer is recessed. In the prior art, the raw rubber is generally shaped and vulcanized through a mold with a recessed structure to produce a necked rubber layer, and then the necked rubber layer is press-fitted or bonded with the metal inner tube 8 and the metal outer tube to form a frame bushing.

[0046] When using this device, refer to Figure 5As shown, the inner cover 51, the telescopic spring 52 and the stop cover 5 are inserted into one end of the central tube 1, and then a locking ring sleeve 6 is screwed into the outer side of the central tube 1 to prevent the stop cover 5, the telescopic spring 52 and the inner cover 51 from sliding off the central tube 1. At this time, the metal inner tube 8 is sleeved on the central tube 1 from the other end of the central tube 1. The metal inner tube 8 fits on the inner cover 51 under the action of its gravity, and then the upper end outer tube 3 is sleeved, and the two necking components 2 are closed into an annular body at the limiting ring groove 42 on the rotating ring sleeve 4. At this time, the inner cover 51 is pushed inward. , the metal inner tube 8, the end outer tube 3 and the necking component 2 are filled with raw rubber, and then the other end outer tube 3, the inner cover 51, the telescopic spring 52 and the stop cover 5 are installed in sequence, and finally another locking ring sleeve 6 is screwed into the outer side of the other end of the central tube 1 to prevent the stop cover 5 from sliding off the central tube 1. After the above operations are completed, the device filled with raw rubber is placed in a high-temperature box for heating. The high-temperature box is a prior art. It should be noted that before placing it in the high-temperature box, the piston member 7 needs to be taken out from the central tube 1. The raw rubber is heated and becomes At the same time, under the shaping of the two necking components 2 and the two inner abutting covers 51, the raw rubber will be temporarily shaped into a blank with a necking structure. After that, the device is taken out of the high-temperature box, and the two pistons 7 are inserted from both ends of the central tube 1 and pressed. At this time, the gas in the central tube 1 will enter the radial channel 53 from the side opening 11, and blow through the end notch 54 to the contact surface of the blank with the necking structure and the inner abutting cover 51, and an air layer will swell on the contact surface. At this time, the locking ring sleeve 6 can be turned to lock the baffle cover 5, the telescopic spring 52 and the inner abutting cover 51. The cover 51 is easily taken out, and the two necking components 2 are rotated to break the adhesion between the necking components 2 and the blank with the necking structure, and the swivel sleeve 4 is rotated to make the swivel sleeve 4 away from the bottom arc plate 23, and then the two necking components 2 are taken out from the side of the blank with the necking structure, and finally the blank with the necking structure together with the metal inner tube 8 is taken out from the central tube 1, and the metal outer tube is put on, and finally the vulcanization operation is performed to complete the production of the frame bushing with the necking structure. It should be noted that the vulcanization operation is a prior art and will not be described in detail here.

[0047] When using the device for necking and shaping, the locking ring sleeves 6 on both sides of the central tube 1 can be rotated to shorten the distance between the two blocking covers 5, thereby making the elastic concave arc plate 21 more concave, thereby adjusting the necking structure of the blank. Correspondingly, if the distance between the two blocking covers 5 is increased, thereby reducing the concave amplitude of the elastic concave arc plate 21, the necking structure of the blank can also be adjusted.

[0048] The device, through the setting of the necking component 2, utilizes the convenient adjustment of the distance between the two blocking covers 5, so that the degree of depression of the elastic concave arc plate 21 can be controllably changed, successfully realizing the efficient adjustment of the necking structure of the blank, and the two necking components 2 constitute an annular body, which can be rotatably set on the swivel sleeve 4 and can be taken out from both sides of the blank, which greatly improves the efficiency of taking out the blank from the device, and thus greatly improves the production efficiency of the frame bushing, and the metal inner tube 8 and the blank are taken out at the same time, so that the blank does not need to be installed with the metal inner tube 8 again, further improving the production efficiency of the frame bushing, the structural setting is exquisite and efficient, and is suitable for promotion and application in the production process of frame bushings.

[0049] Through the arrangement and cooperation of the center tube 1, the side opening 11, the piston member 7, etc., the device utilizes the arrangement of the radial channel 53 and the end notch 54 to push the piston member 7 to slide in the center tube 1, so that the gas is blown into the upper and lower end surfaces of the blank through the radial channel 53 and the end notch 54 to form an air layer, which is convenient for the separation of the inner cover 51 and the blank, thereby greatly improving the speed of removing the blank from the device, facilitating the subsequent vulcanization operation, and further improving the production efficiency of the frame bushing. The structural arrangement is simple and efficient, and is suitable for promotion and application in the production process of frame bushings.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient necking device for producing vehicle frame bushings, comprising a center tube (1), characterized in that: The middle section of the central tube (1) is sleeved with a metal inner tube (8), both ends of the central tube (1) are slidably connected with inner abutment covers (51), the inner abutment covers (51) are connected with a stop cover (5) via a telescopic spring (52), the end of the central tube (1) is located on the outer side of the stop cover (5) and is threadedly connected with a locking ring sleeve (6), an end outer tube (3) and a necking assembly (2) are arranged between the two stop covers (5), two end outer tubes (3) are arranged and are respectively located on both sides of the central tube (1), and two necking assemblies (2) are arranged and are both located in the middle section of the central tube (1) and form an annular body; The necking component (2) comprises an elastic concave arc plate (21), a side arc plate (22) and a bottom arc plate (23); two side arc plates (22) are provided and are located on both sides of the elastic concave arc plate (21); and two bottom arc plates (23) are provided and are located on the outside of the side arc plates (22).

2. The high-efficiency necking device for producing vehicle frame bushings according to claim 1, characterized in that: The outer side surface of the end outer tube (3) is threadedly connected with a swivel sleeve (4), the necking assembly (2) is located between the two swivel sleeves (4), the telescopic spring (52) is sleeved on the center tube (1) without contacting it, and the blocking cover (5) is slidably connected to the outer side surface of the center tube (1).

3. The high-efficiency necking device for producing vehicle frame bushings according to claim 2, characterized in that: A limiting annular groove (42) is provided on one side of the rotating ring sleeve (4) facing the necking assembly (2), and an end of the bottom arc plate (23) is located in the limiting annular groove (42).

4. The high-efficiency necking device for producing vehicle frame bushings according to claim 3 is characterized in that: A plurality of side openings (11) are evenly arranged on both sides of the central tube (1) around its central axis, and piston parts (7) are arranged at both ends of the inner side surface of the central tube (1).

5. The high-efficiency necking device for producing vehicle frame bushings according to claim 4, characterized in that: The piston member (7) comprises a piston head and a piston rod. The piston head is configured in a disc shape. The diameter of the piston head is equal to the inner diameter of the central tube (1).

6. The high-efficiency necking device for producing vehicle frame bushings according to claim 5, characterized in that: The arc inner side surface of the inner abutting cover (51) is evenly provided with a plurality of radial holes (53) around its central axis, and the radial holes (53) penetrate to the arc outer side surface of the inner abutting cover (51).

7. The high-efficiency necking device for producing vehicle frame bushings according to claim 6, characterized in that: An end notch (54) is provided at the edge of one side of the inner cover (51) facing the metal inner tube (8) and located at the radial hole (53), and the radial hole (53) and the end notch (54) are in communication.

8. The high-efficiency necking device for producing vehicle frame bushings according to claim 7, characterized in that: A T-shaped rod (41) is arranged on the arc outer side surface of the swivel sleeve (4).

9. The high-efficiency necking device for producing vehicle frame bushings according to claim 8, characterized in that: The inner diameter of the side arc plate (22) is equal to the inner diameter of the end outer tube (3), and the diameter of the inner abutment cover (51) is equal to the inner diameter of the side arc plate (22).

10. The high-efficiency necking device for producing vehicle frame bushings according to claim 9, characterized in that: The diameter of the blocking cover (5) is greater than the outer diameter of the end outer tube (3).

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