Hot air welding locking and positioning mechanism for air chamber of air spring

Abstract

The utility model discloses a hot air welding locking and positioning mechanism for an air chamber of an air spring. The hot air welding locking and positioning mechanism comprises an upper die assembly and a lower die assembly, the upper die assembly comprises a top plate. A lifting plate is arranged at the lower end of the top plate. A movable plate is arranged below the lifting plate, and an upper die base is arranged below the movable plate. The lower die assembly comprises a bottom plate, and a lower die base is arranged at the upper end of the bottom plate. Two sets of locking mechanisms of the same structure are symmetrically installed on the two sides of the lower die base, and the locking mechanisms are fixedly connected with the upper die base. According to the utility model, the locking mechanism is arranged between the upper die assembly and the lower die assembly, so that the locking mechanism effectively locks the relative position of the upper die holder and the lower die holder in the welding process, the die looseness caused by high-pressure gas injection is prevented, and the stability and consistency in the welding process are ensured; and due to the design of the locking mechanism, the upper die holder and the lower die holder can be kept in accurate butt joint during welding, and the welding quality and the yield of products are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air springs, in particular to a hot-air welding locking and positioning mechanism for an air spring air chamber. Background Art

[0002] Among the core elements of modern automobile suspension systems, air springs undoubtedly occupy a pivotal position. As a key component in this precision system, air springs not only shoulder the dual responsibilities of supporting the weight of the vehicle and alleviating driving impact, but also become the core force that promotes the continuous advancement of automobile suspension technology with its excellent adjustment ability and wide adaptability. What is particularly critical is that the upper air chamber part of the air spring, as the essence of its core structure, its performance is directly related to the stability and durability of the overall system, and it is the concentrated embodiment of the support and protection functions.

[0003] At present, the manufacturing of the upper air chamber of the air spring generally adopts advanced injection molding technology, and the carefully designed upper shell and lower shell are seamlessly connected through the hot melt welding process to ensure the tightness of the structure and the integrity of the function. In this high-precision manufacturing process, a challenge that cannot be ignored is the problem of mold stability during hot melt welding. Specifically, when the upper and lower molds of the mold are tightly closed and ready for welding, high-pressure gas needs to be injected into the closed mold cavity to enhance the welding effect; however, the introduction of high-pressure gas, although it improves the tightness of the welding, inevitably produces a strong reaction force, making the fixation between the molds particularly fragile and prone to loosening. This looseness not only interferes with the smooth progress of the welding process, but may also lead to uneven weld quality and even tiny gaps, which seriously affects the welding quality of the air spring and the qualified rate of the final product.

[0004] In view of the significant impact of the above-mentioned problems on production efficiency and product quality, the development of a new air spring chamber hot air welding locking and positioning mechanism that can effectively lock the mold position, prevent loosening during welding, and ensure the uniformity of the weld is of far-reaching significance for improving the overall performance and market competitiveness of air springs. Summary of the invention

[0005] The utility model aims to provide an air spring air chamber hot air welding locking and positioning mechanism to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The cam assembly comprises a plurality of independently controlled cams, and the plurality of independently controlled cams have the plurality of independently controlled cams, wherein the plurality of independently controlled cams have the plurality of independently controlled cams.

[0008] Preferably, the locking mechanism comprises a base, wherein a telescopic cylinder is provided at the upper end of the base; a fixing plate is provided on the side of the base close to the lower mold base, wherein a locking block is provided at the upper end of the fixing plate, and the locking block is hinged to the upper end of the fixing plate through a pin shaft.

[0009] Preferably, a movable block is provided on one side of the fixed plate close to the telescopic cylinder, wherein a limiting groove matched with the movable block is opened on the base, and the lower end of the movable block is arranged in the limiting groove and moves up and down along it.

[0010] Preferably, a connecting block is provided at the upper end of the movable block, wherein the connecting block extends toward one end of the telescopic cylinder and is fixedly connected thereto.

[0011] Preferably, a floating joint is provided at the top end of the piston rod of the telescopic cylinder, wherein the floating joint is fixedly connected to the connecting block.

[0012] Preferably, rollers are respectively provided on both sides of the upper end of the movable block, wherein the rollers abut against the rear end of the locking block.

[0013] Preferably, a sliding block is provided on one side of the movable block close to the fixed plate, wherein a sliding rail adapted to the sliding block is fixedly mounted on the fixed plate.

[0014] Preferably, positioning guide rods are respectively provided around the upper die base, and positioning guide sleeves matched with the positioning guide rods are respectively provided around the lower die base.

[0015] Preferably, the lower end of the upper die base extends to both sides and is provided with positioning blocks, wherein the positioning blocks are adapted to the locking blocks provided on the locking mechanism.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the utility model sets a locking mechanism between the upper mold assembly and the lower mold assembly, so that the locking mechanism effectively locks the relative position of the upper mold base and the lower mold base during the welding process, prevents the mold from loosening due to high-pressure gas injection, and ensures the stability and consistency of the welding process; the design of the locking mechanism enables the upper mold base and the lower mold base to maintain precise docking during welding, reduces the problems of uneven welds and gaps caused by loose molds, and significantly improves the welding quality and product yield; the locking block is driven by a telescopic cylinder to perform locking and releasing operations, which not only simplifies the operating process, but also improves the locking efficiency; at the same time, the design of the floating joint makes the connection more stable and reduces the adverse effects caused by mechanical vibration; by setting the positioning guide rod and the positioning guide sleeve, the positioning block and the locking block, the positioning accuracy of the mold during the welding process is further enhanced, and the accuracy of the welding position is ensured; it effectively solves the problems of mold loosening and welding quality in hot-melt welding of air spring chambers, and provides strong support for improving the performance and reliability of automobile suspension systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the connection between the upper mold assembly and the lower mold assembly of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the upper die seat of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the lower die base of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the locking mechanism of the utility model;

[0021] Figure 5 It is a rear view structural schematic diagram of the locking mechanism of the utility model;

[0022] Figure 6 It is a schematic diagram of the locking mechanism of the utility model when viewed from above;

[0023] Figure 7 It is a right side structural schematic diagram of the locking mechanism of the utility model.

[0024] Wherein: 1. Upper die assembly; 101. Top plate; 102. Guide column; 103. Booster cylinder; 104. Lifting plate; 105. Guide sleeve; 106. Movable plate; 107. Upper die seat; 108. Upper die cavity; 2. Lower die assembly; 201. Bottom plate; 202. Support plate; 203. Lower die seat; 204. Lower die cavity; 3. Locking mechanism; 301. Base; 302. Telescopic cylinder; 303. Fixed plate; 304. Locking block; 305. Pin; 306. Movable block; 307. Limiting groove; 4. Positioning block; 5. Connecting block; 6. Floating joint; 7. Roller; 8. Slider; 9. Slide rail; 10. Positioning guide rod; 11. Positioning guide sleeve. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] Please refer to Figures 1 to 7 To achieve the above purpose, the utility model provides the following technical solutions:

[0027] An air spring air chamber hot air welding locking and positioning mechanism comprises an upper mold assembly 1 and a lower mold assembly 2; the upper mold assembly 1 is arranged above a workbench, wherein the lower mold assembly 2 is arranged directly below the upper mold assembly 1 and opposite to it; the upper mold assembly 1 comprises a top plate 101, wherein guide columns 102 are respectively arranged at the four corners of the top plate 101; a booster cylinder 103 is arranged at the upper end of the top plate 101, wherein a lifting plate 104 is arranged at the lower end of the top plate 101, and the top end of the piston rod of the booster cylinder 103 passes through the top plate 101 and is fixedly connected to the lifting plate 104; the four corners of the lifting plate 104 are respectively A guide sleeve 105 is provided which is slidably connected to the guide column 102, wherein a movable plate 106 is provided below the lifting plate 104; an upper die base 107 is provided below the movable plate 106, wherein an upper die cavity 108 is provided at the lower end of the upper die base 107; the lower die assembly 2 comprises a bottom plate 201, wherein support plates 202 are provided at both ends of the bottom plate 201 respectively; a lower die base 203 is provided at the upper end of the bottom plate 201, wherein a lower die cavity 204 is provided at the upper end of the lower die base 203; two sets of locking mechanisms 3 with the same structure are symmetrically installed on both sides of the lower die base 203, wherein the locking mechanism 3 is fixedly connected to the upper die base 107.

[0028] When the upper mold assembly 1 and the lower mold assembly 2 are closed, the booster cylinder 103 on the upper mold assembly 1 starts to work and pushes the piston rod to move downward, thereby driving the lifting plate 104, the movable plate 106 and the upper mold base 107 to move downward together, so that the upper mold cavity 108 at the lower end of the upper mold base 107 is aligned with the lower mold cavity 204 on the lower mold base 203, and the air spring chamber is positioned together; in the process of the upper mold base 107 moving downward, the locking mechanism 3 starts to work and locks the upper mold base 107 and the lower mold base 203 together to ensure stability during the processing; after the air spring chamber is positioned and locked by the upper mold cavity 108 and the lower mold cavity 204, hot air welding processing can be carried out; during the processing, due to the action of the locking mechanism 3, the upper mold base 107 and the lower mold base 203 remain fixed to ensure processing accuracy.

[0029] Please refer to Figures 4 to 7 As an embodiment of the utility model, the locking mechanism 3 includes a base 301, wherein a telescopic cylinder 302 is provided at the upper end of the base 301; a fixed plate 303 is provided on the side of the base 301 close to the lower mold base 203, wherein a locking block 304 is provided on the upper end of the fixed plate 303, and the locking block 304 is hinged to the upper end of the fixed plate 303 through a pin shaft 305; a movable block 306 is provided on the side of the fixed plate 303 close to the telescopic cylinder 302, wherein a limiting groove 307 matched with the movable block 306 is opened on the base 301, and the lower end of the movable block 306 is arranged in the limiting groove 307 and moves up and down along it; the lower end of the upper mold base 107 extends to both sides and is provided with positioning blocks 4, wherein the positioning block 4 is matched with the locking block 304 arranged on the locking mechanism 3.

[0030] In the above-described scheme, the locking mechanism 3 is in a non-working state, the piston rod of the telescopic cylinder 302 is in a retracted state, and the locking block 304 is hinged to the upper end of the fixed plate 303 through the pin 305 and is in a relatively free position; when the upper mold assembly 1 begins to descend and is ready to close the mold with the lower mold assembly 2, the locking mechanism 3 begins to enter a working state; the piston rod of the telescopic cylinder 302 drives the movable block 306 to move upward along the limiting groove 307 through the connecting block 5, and as the movable block 306 moves upward, the top end of the movable block 306 will push the locking block 304 to rotate around the pin 305 as the axis, so that the lock head at the front end of the locking block 304 gradually approaches the positioning block 4 on the upper mold base 107, and the locking block 304 and the positioning block 4 are locked. The positioning block 4 is in close contact to realize the locking function, ensuring the stability of the upper mold base 107 and the lower mold base 203 during the mold closing process; during the hot melt welding process, the telescopic cylinder 302 keeps the position of the piston rod unchanged to ensure that the locking block 304 continues to apply a locking force to the upper mold base 107, which can effectively prevent the upper mold base 107 and the lower mold base 203 from moving relative to each other during the processing, thereby ensuring the processing accuracy and product quality; after the processing is completed, the telescopic cylinder 302 drives the piston rod to retract, and drives the movable block 306 to move downward along the limiting groove 307 through the connecting block 5, thereby driving the locking block 304 to rotate in the opposite direction to the initial position, and the locking block 304 is separated from the positioning block 4 of the upper mold base 107 to realize the unlocking function.

[0031] Please refer to Figure 4 , Figure 5 As an embodiment of the utility model, a connecting block 5 is provided at the upper end of the movable block 306, wherein the connecting block 5 extends toward one end of the telescopic cylinder 302 and is fixedly connected thereto; a floating joint 6 is provided at the top end of the piston rod of the telescopic cylinder 302, wherein the floating joint 6 is fixedly connected to the connecting block 5.

[0032] In the above scheme, in the initial state, the piston rod of the telescopic cylinder 302 is in a retracted position, while the connecting block 5 and the movable block 306 remain relatively stationary; when the telescopic cylinder 302 starts to work, its piston rod will extend upward, and since the top end of the piston rod is fixedly connected to the connecting block 5 through the floating joint 6, the movement of the piston rod will be directly transmitted to the connecting block 5; the connecting block 5 begins to move upward under the thrust of the piston rod, and since the connecting block 5 and the movable block 306 are fixedly connected, the movable block 306 will also move with the movement of the connecting block 5 ; The movable block 306 moves along the limiting groove 307 opened on the base 301, wherein the limiting groove 307 ensures that the movable block 306 can only move along a specific path; as the movable block 306 moves upward, the movable block 306 will push the locking block 304 to rotate around the pin shaft 305 as the axis, so that the locking head at the front end of the locking block 304 gradually approaches the positioning block 4 on the upper mold base 107, and the locking function is realized by the close contact between the locking block 304 and the positioning block 4, thereby ensuring the stability of the upper mold base 107 and the lower mold base 203 during the mold closing process.

[0033] Please refer to Figures 5 to 7 As an embodiment of the present utility model, rollers 7 are respectively provided on both sides of the upper end of the movable block 306 , wherein the rollers 7 abut against the rear end of the locking block 304 .

[0034] In the above scheme, rollers 7 are respectively installed on both sides of the upper end of the movable block 306, and the rollers 7 are kept in contact with the rear end of the locking block 304 in the initial state, wherein the rollers 7 can rotate freely on the movable block 306 and keep in contact with the rear end of the locking block 304; when the telescopic cylinder 302 starts to work, the movable block 306 is driven to move upward through the connecting block 5, wherein the movement of the movable block 306 will drive the rollers 7 on both sides of the upper end to move together, and since the rollers 7 are in contact with the rear end of the locking block 304, the movement of the rollers 7 will be converted into a rotational movement of the locking block 304, and the locking block 304 will gradually come into close contact with the positioning blocks 4 on both sides of the upper die seat 107 during the rotation process to achieve the locking function; during the welding process, the telescopic cylinder 302 will keep the position of the piston rod unchanged to ensure that the movable block 306 and the rollers 7 also remain stationary; in this way, the rollers 7 will continue to apply pressure to the locking block 304 to keep it in close contact with the positioning block 4 to ensure stability during the processing.

[0035] Please refer to Figure 6 , Figure 7 As an embodiment of the utility model, a sliding block 8 is provided on one side of the movable block 306 close to the fixed plate 303 , wherein a slide rail 9 adapted to the sliding block 8 is fixedly mounted on the fixed plate 303 .

[0036] In the above scheme, in the initial state, the slider 8 is aligned with the slide rail 9, allowing the movable block 306 to slide relative to the fixed plate 303, wherein the slide rail 9 provides a clear movement path for the slider 8, ensuring that the movable block 306 can only move along this path; when the telescopic cylinder 302 starts to work, the telescopic cylinder 302 pushes the movable block 306 to move upward through the connecting block 5, so that the slider 8 on the movable block 306 moves along the slide rail 9 on the fixed plate 303, and this sliding is smooth and controlled; wherein the movement of the movable block 306 will drive the roller 7 at its upper end to move together, and since the roller 7 is in contact with the rear end of the locking block 304, the movement of the roller 7 will be converted into the rotational movement of the locking block 304, and the locking block 304 will gradually come into close contact with the positioning block 4 during the rotation process to achieve the locking function; during the processing process, the slide rail 9 and the slider 8 ensure that the movable block 306 remains on its predetermined movement path, and will not deviate even if subjected to external forces, which helps to maintain the stability and accuracy of the locking mechanism 3.

[0037] Please refer to Figures 1 to 3 As an embodiment of the utility model, positioning guide rods 10 are respectively provided around the upper die base 107, and positioning guide sleeves 11 matched with the positioning guide rods 10 are respectively provided around the lower die base 203.

[0038] In the above-described scheme, positioning guide rods 10 are respectively provided around the upper mold base 107, and these positioning guide rods 10 usually have certain length and precision requirements to ensure that they can be accurately inserted into the corresponding holes during the mold closing process; positioning guide sleeves 11 are respectively provided around the lower mold base 203 to match the positioning guide rods 10, wherein the interior of the positioning guide sleeves 11 is precision machined to ensure that the matching clearance between the positioning guide rods 10 meets the design requirements; before the upper mold assembly 1 starts to descend and prepares to close the mold with the lower mold assembly 2, the positioning guide rods 10 and the positioning guide sleeves 11 are in a relatively separated state; as the upper mold assembly 1 descends, the positioning guide rods 10 open and close. The positioning guide rod 10 and the positioning guide sleeve 11 gradually approach and insert into the positioning guide sleeve 11; the cooperation between the positioning guide rod 10 and the positioning guide sleeve 11 plays a guiding role, ensuring that the upper mold base 107 can move smoothly along the predetermined path during the descent; at the same time, this cooperation also plays a role in precise positioning, by reducing the deviation between the upper mold base 107 and the lower mold base 203, the mold closing accuracy is improved; after the mold closing is completed, the positioning guide rod 10 and the positioning guide sleeve 11 are closely matched together, ensuring that the relative position between the upper mold base 107 and the lower mold base 203 is stable and unchanged, and this stable state is helpful to maintain the shape and dimensional accuracy of the air spring chamber in the subsequent processing process.

[0039] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. An air spring air chamber hot air welding locking and positioning mechanism, comprising an upper mold assembly (1) and a lower mold assembly (2); the upper mold assembly (1) is arranged above a workbench, wherein the lower mold assembly (2) is arranged directly below the upper mold assembly (1) and opposite to it; characterized in that: The upper mold assembly (1) comprises a top plate (101), wherein the top plate (101) is provided with guide pillars (102) at four corners thereof; a booster cylinder (103) is provided at the upper end of the top plate (101), wherein a lifting plate (104) is provided at the lower end of the top plate (101), and the top end of the piston rod of the booster cylinder (103) passes through the top plate (101) and is fixedly connected to the lifting plate (104); guide sleeves (105) slidably connected to the guide pillars (102) are provided at the four corners of the lifting plate (104), wherein a movable plate (106) is provided below the lifting plate (104). ); an upper die seat (107) is provided below the movable plate (106), wherein an upper die cavity (108) is provided at the lower end of the upper die seat (107); the lower die assembly (2) comprises a bottom plate (201), wherein support plates (202) are provided at both ends of the bottom plate (201); a lower die seat (203) is provided at the upper end of the bottom plate (201), wherein a lower die cavity (204) is provided at the upper end of the lower die seat (203); two sets of locking mechanisms (3) with the same structure are symmetrically installed on both sides of the lower die seat (203), wherein the locking mechanisms (3) are fixedly connected to the upper die seat (107).

2. The air spring air chamber hot air welding locking and positioning mechanism according to claim 1, characterized in that: The locking mechanism (3) comprises a base (301), wherein a telescopic cylinder (302) is provided at the upper end of the base (301); a fixing plate (303) is provided at one side of the base (301) close to the lower die base (203), wherein a locking block (304) is provided at the upper end of the fixing plate (303), and the locking block (304) is hinged to the upper end of the fixing plate (303) via a pin shaft (305).

3. The air spring air chamber hot air welding locking and positioning mechanism according to claim 2, characterized in that: A movable block (306) is provided on one side of the fixed plate (303) close to the telescopic cylinder (302), wherein a limiting through groove (307) adapted to the movable block (306) is provided on the base (301).

4. The air spring air chamber hot air welding locking and positioning mechanism according to claim 3, characterized in that: A connecting block (5) is provided at the upper end of the movable block (306), wherein the connecting block (5) extends toward one end of the telescopic cylinder (302) and is fixedly connected thereto.

5. The air spring air chamber hot air welding locking and positioning mechanism according to claim 4, characterized in that: A floating joint (6) is provided at the top end of the piston rod of the telescopic cylinder (302), wherein the floating joint (6) is fixedly connected to the connecting block (5).

6. The air spring air chamber hot air welding locking and positioning mechanism according to claim 3, characterized in that: Rollers (7) are respectively provided on both sides of the upper end of the movable block (306), wherein the rollers (7) abut against the rear end of the locking block (304).

7. The air spring air chamber hot air welding locking and positioning mechanism according to claim 3, characterized in that: A sliding block (8) is provided on one side of the movable block (306) close to the fixed plate (303), wherein a sliding rail (9) adapted to the sliding block (8) is fixedly mounted on the fixed plate (303).

8. The air spring air chamber hot air welding locking and positioning mechanism according to claim 1, characterized in that: Positioning guide rods (10) are respectively arranged around the upper die seat (107), and positioning guide sleeves (11) adapted to the positioning guide rods (10) are respectively arranged around the lower die seat (203).

9. The air spring air chamber hot air welding locking and positioning mechanism according to claim 8, characterized in that: The lower end of the upper die seat (107) extends to both sides and is provided with positioning blocks (4), wherein the positioning blocks (4) are adapted to the locking blocks (304) provided on the locking mechanism (3).

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