A radial multi-size air spring molded drum

Abstract

This invention relates to the field of air spring forming tool technology, specifically disclosing a radial multi-size air spring forming drum, including a push rod, a main shaft slidably connected to the outer surface of the push rod, the push rod sliding on the inner wall of the main shaft, a drive slider provided on the outer surface of the main shaft, flanges installed on both sides of the outer surface of the main shaft, the flanges being connected to the main shaft via threaded chucks, a drive slide rod provided between the flanges, the drive slider fitting against the drive slide rod, slide tracks equally spaced on the flanges, a main connecting rod and a secondary connecting rod connected at both ends of the drive slide rod, an outer tile installed at one end of the main connecting rod, an inner tile installed at one end of the secondary connecting rod, and stops installed on the flanges on both sides of the slide tracks; the circumferential extension and retraction of the forming drum tiles is completed by utilizing circumferentially rotatable tiles whose rotation center is not the center of the inner and outer tiles; the radial extension and retraction of the tiles is completed by utilizing the slide tracks, combining the circumferential and radial extension and retraction movements into one, thus completing the circumferential and radial movements of the forming drum.

Description

Technical Field

[0001] This invention belongs to the technical field of air spring forming tools, specifically relating to a radial multi-size air spring forming drum. Background Technology

[0002] Currently, air spring forming drums are mostly of the fixed type and the expansion type. The fixed forming drum has a simple structure, mainly composed of a main shaft, connecting rod, roller, etc. After the rubber sheet and the fabric are laminated, the blank is not easy to remove. The expansion forming drum solves the problem of blank disassembly, but the forming size is limited, and only one specification of air spring can be produced.

[0003] Therefore, it is necessary to design a molding drum that can facilitate the removal of blanks and produce air springs of various specifications. Summary of the Invention

[0004] The purpose of this invention is to provide a radially multi-size air spring forming drum to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A radially multi-size air spring forming drum includes: a push rod, a main shaft slidably connected to the outer surface of the push rod, the push rod sliding on the inner wall of the main shaft, a drive slider provided on the outer surface of the main shaft, a groove formed on the main shaft, the push rod connected to the drive slider via a fixed rod, the fixed rod sliding in the groove, driving the drive slider to slide on the main shaft, flanges mounted on both sides of the outer surface of the main shaft, the flanges connected to the main shaft via threaded chucks, a drive slide rod disposed between the flanges, the drive slider fitting against the drive slide rod, slide tracks equally spaced on the flanges, the two ends of the drive slide rod passing through the slide tracks and connected to a main connecting rod and a secondary connecting rod, the drive slide rod movably disposed on the slide tracks, an outer tile mounted on one end of the main connecting rod, an inner tile mounted on one end of the secondary connecting rod, and stops mounted on the flanges and on both sides of the slide tracks.

[0007] Preferably, the push rod, drive slider, drive slide rod, flange, inner tile, outer tile, auxiliary connecting rod, main connecting rod and stop block constitute a radial telescopic mechanism, and the drive slider and drive slide rod adopt a 30-degree oblique angle.

[0008] Preferably, the main shaft and the flange constitute a drum rotation mechanism, and the main shaft is connected to a motor.

[0009] Preferably, the outer and inner tiles are fitted with silicone tapes.

[0010] Preferably, the main connecting rod and the auxiliary connecting rod are configured with a spring clip connection, the outer sides of the inner and outer tiles are configured to be closed, and the main connecting rod and the auxiliary connecting rod are configured with a rotating joint connection with the outer and inner tiles.

[0011] Preferably, both the inner and outer tiles are layered, with each axial tooth having a thickness of 3mm, and the inner and outer tiles are fitted together.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] (1) This invention utilizes the circumferentially rotatable but not circumferentially rotatable center of the inner and outer tiles to complete the circumferential extension and retraction of the forming drum tile; and utilizes the slide to complete the radial extension and retraction of the tile, combining the two movements of circumferential extension and retraction into one to complete the circumferential and radial movements of the forming drum.

[0014] (2) The radial multi-size forming drum design of the present invention allows for the determination of the position of the forming drum stop block within a certain forming range based on the diameter of the air spring without the need to replace the forming drum components. By adjusting the position of the stop block, air springs of different diameters can be formed, thereby increasing the forming range of the forming drum.

[0015] (3) The present invention designs the tile into a layered array structure to avoid interference when the formed drum tile shrinks. On the one hand, it completes the circumferential expansion and contraction of the tile, and on the other hand, it ensures that the air spring blank is subjected to uniform force when it is pressed, thus ensuring the quality of the blank. In addition, when the tile is stretched, its outer end is a closed solid, which plays the role of limiting and positioning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure inside the silicone strip of the present invention;

[0017] Figure 2 This is an internal sectional view of the present invention;

[0018] Figure 3 This is a front view of the present invention;

[0019] Figure 4 This is a schematic diagram of the silicone tape structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the expansion of the molding drum of the present invention;

[0021] Figure 6 This is a schematic diagram of the shrinkage of the molding drum of the present invention;

[0022] In the diagram: 1. Push rod; 2. Main shaft; 3. Drive slider; 4. Drive slide rod; 5. Flange; 6. Inner tile; 7. Outer tile; 8. Secondary connecting rod; 9. Main connecting rod; 10. Stop block; Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1:

[0025] Please see Figures 1-6 As shown, a radial multi-size air spring forming drum includes: a push rod 1, a main shaft 2 slidably connected to the outer surface of the push rod 1, the push rod 1 sliding on the inner wall of the main shaft 2, a drive slider 3 provided on the outer surface of the main shaft 2, a groove provided on the main shaft 2, the push rod 1 connected to the drive slider 3 through a fixed rod, causing the fixed rod to slide in the groove, driving the drive slider 3 to slide on the main shaft 2, flanges 5 installed on both sides of the outer surface of the main shaft 2, the flanges 5 connected to the main shaft 2 through threaded chucks, a drive slide rod 4 provided between the flanges 5, the drive slider 3 fitting against the drive slide rod 4, slide tracks provided at equal intervals on the flanges 5, the two ends of the drive slide rod 4 passing through the slide tracks and connected to a main connecting rod 9 and a secondary connecting rod 8, the drive slide rod 4 movably set on the slide tracks, an outer tile 7 installed at one end of the main connecting rod 9, and an outer plate 7 installed at one end of the secondary connecting rod 8. The inner tile 6 and flange 5 are equipped with stop blocks 10 on both sides of the slide rail; the push rod 1, drive slider 3, drive slide rod 4, flange 5, inner tile 6, outer tile 7, auxiliary connecting rod 8, main connecting rod 9 and stop blocks 10 constitute a radial telescopic mechanism, and the drive slider 3 and drive slide rod 4 adopt a 30-degree angle; the main shaft 2 and flange 5 constitute a drum rotation mechanism, and the main shaft 2 is connected to the motor; silicone strips 11 are sleeved on the outer sides of the outer tile 7 and inner tile 6; the main connecting rod 9 and auxiliary connecting rod 8 are set as spring clips, the outer sides of the inner tile 6 and outer tile 7 are set as closed, and the main connecting rod 9 and auxiliary connecting rod 8 are set as rotating pairs to connect with the outer tile 7 and inner tile 6; both the inner tile 6 and outer tile 7 are set as layered type, and the axial single tooth is set as 3mm thick, with the inner tile 6 and outer tile 7 transition fit.

[0026] Specifically, when the forming drum expands, it is in a contracted state before operation. At this time, the push rod 1 moves to the left, and the drive slider 3 moves to the left accordingly. The drive slide rod 4 moves upward with the drive slider 3. The main connecting rod 9 and the auxiliary connecting rod 8 drive the inner tile 6 to expand outward under the action of the drive slide rod 4. The stop block 10 determines the opening arc between the inner tile 6 and the outer tile 7. The slide in the flange 5 determines the rotation center and radial path of the inner tile 6 and the outer tile 7. The outer ends of the inner tile 6 and the outer tile 7 are closed, so that the outer ends of the inner tile 6 and the outer tile 7 contact each other after they are extended, which also plays a role in mutual restriction.

[0027] Specifically, the entire drum rotates. After the forming drum completes its extension, the main shaft 2, which is stepped, is fixed to the flange 5 with bolts. The main shaft 2 drives the flange 5 to rotate, and the flange 5 drives the other components to rotate, thus completing the rotation of the entire forming drum.

[0028] Specifically, after the air spring blank is pressed together, the main shaft 2 stops rotating. The push rod 1 drives the drive slider 3 to move to the right, so that the inner tile 6 and outer tile 7 of the forming drum, the main connecting rod 9 and the secondary connecting rod 8, and the drive slider 4 are not subjected to force. Under the action of the silicone belt 11, the forming drum completes the shrinking motion and the blank is unloaded.

[0029] In order for the inner tile 6 and the outer tile 7 to expand and contract in the radial direction and rotate around the same center in the circumferential direction, a slide is provided on the flange 5. The main connecting rod 9 and the auxiliary connecting rod 8 complete the radial movement together. The main connecting rod 9 and the auxiliary connecting rod 8 are connected by a spring clip to drive the main connecting rod 9 and the auxiliary connecting rod 8 to separate. The stop block 10 is rounded to make the separation and contraction smoother. The inner tile 6 and the outer tile 7, as well as the main connecting rod 9 and the auxiliary connecting rod 8, all adopt a gap overlapping motion mode.

[0030] Example 2:

[0031] Regarding the position setting of the stop block 10, taking an air spring with an inner diameter D = 350mm and a height H = 320mm as an example, when the axial movement distance of the push rod 1 is l, since both the drive slider 3 and the drive slide rod 4 adopt a 30° angle, the rising height at the connection between the main connecting rod and the auxiliary connecting rod is... The lengths of the main connecting rod and the secondary connecting rod are l1 and l2 (where l1 = l2). Since the inner diameter of the forming drum is D = 350 mm, the single-side dimension L of the forming drum is 175 mm. In triangle OAB, Among them l AB The lengths of the main link and the secondary link, where l4 is the distance between the main spindle and the center of the lower circle of the slot. AO Given the forming radius of the forming drum (selecting the connecting mid-surface), the size of ∠OBA can be calculated based on the above parameters, thus yielding... This is the position of stop 10. Therefore, only the parameter l needs to be changed. AB By calculating the position of the stop 10, it is possible to obtain forming drums of different diameters.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radially multi-dimensional air spring forming drum, characterized in that, include: A push rod (1) is slidably connected to a main shaft (2) on its outer surface. The push rod (1) slides on the inner wall of the main shaft (2). A drive slider (3) is provided on the outer surface of the main shaft (2). A groove is provided on the main shaft (2). The push rod (1) is connected to the drive slider (3) through a fixed rod, so that the fixed rod slides in the groove, driving the drive slider (3) to slide on the main shaft (2). Flanges (5) are installed on both sides of the outer surface of the main shaft (2). The flanges (5) are connected to the main shaft (2) through threaded chucks. The flanges (5) are connected, and a drive slide rod (4) is provided between them. The drive slider (3) is in contact with the drive slide rod (4). The flanges (5) are provided with slides at equal intervals. The two ends of the drive slide rod (4) pass through the slides and are connected to the main connecting rod (9) and the secondary connecting rod (8). The drive slide rod (4) is movably arranged on the slide. One end of the main connecting rod (9) is equipped with an outer tile (7), and one end of the secondary connecting rod (8) is equipped with an inner tile (6). The flanges (5) are equipped with stops (10) on both sides of the slide. The main connecting rod (9) and the auxiliary connecting rod (8) are configured to be connected by spring clips. The outer sides of the inner tile (6) and the outer tile (7) are configured to be closed. The main connecting rod (9) and the auxiliary connecting rod (8) are configured to be connected to the outer tile (7) and the inner tile (6) by a rotating joint.

2. The radial multi-size air spring forming drum according to claim 1, characterized in that: The push rod (1), drive slider (3), drive slide rod (4), flange (5), inner tile (6), outer tile (7), auxiliary connecting rod (8), main connecting rod (9) and stop block (10) constitute a radial telescopic mechanism. The drive slider (3) and drive slide rod (4) adopt a 30-degree angle.

3. The radial multi-size air spring forming drum according to claim 1, characterized in that: The main shaft (2) and the flange (5) constitute the drum rotation mechanism, and the main shaft (2) is connected to the motor.

4. The radial multi-size air spring forming drum according to claim 1, characterized in that: The outer tile (7) and inner tile (6) are fitted with silicone tape (11) on their outer sides.

5. A radial multi-size air spring forming drum according to claim 1, characterized in that: Both the inner tile (6) and the outer tile (7) are layered, with each axial single tooth having a thickness of 3 mm, and the inner tile (6) and the outer tile (7) are in a transition fit.

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