Waist round bush forming apparatus

Abstract

The application relates to the technical field of forming machines, and relates to a waist-round bush forming equipment which comprises a feeding mechanism and a forming mechanism; the feeding mechanism is located at one end of the equipment and is used for conveying a steel belt to the forming mechanism; the forming mechanism is used for bending the steel belt to form a waist-round bush, and comprises a base plate, a forming block arranged at the center of the base plate and a discharging mandrel, a plurality of groups of stamping assemblies are distributed around the forming block, and a width limiting mechanism is arranged at the end of the base plate far from the feeding mechanism. According to the waist-round bush forming equipment, the width limiting mechanism is arranged at the end of the base plate far from the feeding mechanism, two groups of spacing-adjustable limiting plates with guide inclined surfaces are used, the two sides of the steel belt can be accurately limited and guided when the steel belt is conveyed to the forming area, and the position deviation of the two end plate bodies when the metal plate is bent under stress can be effectively avoided.

Description

Technical Field

[0001] This application relates to the field of molding machine technology, and in particular to a bushing molding device for oval bushings. Background Technology

[0002] The oval bushing produced by the forming machine is a mechanical part with a specific structure (oval through hole or shape). Its applications are widely distributed across multiple industrial sectors, with core functions revolving around reducing friction, positioning and fixing, buffering and shock absorption, and compensating for assembly errors. It is mainly used in mechanical transmission and connection fields, the automotive and transportation industries, home appliances and light industrial equipment, as well as automation and precision instruments.

[0003] When the metal plate of the existing oval bushing is bent under stress during molding, the two ends of the plate are prone to displacement, which affects the quality and product consistency of the oval bushing. Utility Model Content

[0004] In order to overcome the problems existing in the prior art, this application provides a bushing forming device.

[0005] The oval bushing forming equipment provided in this application adopts the following technical solution:

[0006] An oval bushing forming device includes a feeding mechanism and a forming mechanism; the feeding mechanism is located at one end of the device and is used to feed a steel strip to the forming mechanism; the forming mechanism is used to bend the steel strip to form an oval bushing, including a substrate and a forming block and a discharge mandrel installed at the center of the substrate, and several sets of stamping components are distributed around the forming block, and a width limiting mechanism is provided at the end of the substrate away from the feeding mechanism.

[0007] By adopting the above technical solution, the feeding mechanism smoothly and continuously conveys the steel strip from one end of the equipment to the forming mechanism. Once the steel strip is conveyed to the substrate area of ​​the forming mechanism, the forming block at the center of the substrate acts as the core forming component. Working in conjunction with several sets of stamping components distributed around it, the stamping components apply pressure to the steel strip, causing it to gradually bend and conform to the outline of the forming block, initially forming the shape of the oval bushing. During the bending and forming process of the steel strip, the width limiting mechanism precisely limits the positions of the plates at both ends of the steel strip, effectively preventing positional displacement of the metal plates at both ends during bending. After the oval bushing is formed, the unloading mandrel is activated, pushing the formed oval bushing out of the forming block, completing the entire forming and unloading process of the oval bushing.

[0008] Preferably, the feeding mechanism adopts gear feeding, lead screw feeding, or swing arm feeding.

[0009] By adopting the above technical solutions, the feeding mechanism respectively adopts the gear feeding structure in the automatic stamping and bending forming machine with gear feeding in the corresponding patent CN221754382U, the screw feeding structure in the automatic stamping and bending forming machine with screw feeding in the CN221773199U, and the swing arm feeding mechanism in the automatic stamping and bending forming machine in the CN117983746A.

[0010] Preferably, the width limiting mechanism includes two sets of limiting plates distributed in parallel, wherein the spacing between the limiting plates is adjustable, and the limiting plates are provided with a guide slope on the side facing the feeding mechanism.

[0011] Preferably, the stamping assembly includes a first stamping block above the forming block and a sixth stamping block below it, and the output ends of the two are respectively engaged with the top surface and bottom surface of the forming block. The first stamping block is provided with a second stamping block and a third stamping block on both sides, and the two are respectively engaged with the arc surfaces on both sides of the top surface of the forming block. The sixth stamping block is provided with a fourth stamping block and a fifth stamping block on both sides, and the two are respectively engaged with the arc surfaces on both sides of the bottom surface.

[0012] Preferably, the second stamping block is located on one side of the width limiting mechanism, and the width of the second stamping block is the same as the spacing between the limiting plates in the width limiting mechanism.

[0013] Preferably, the third stamping block is located on one side of the feeding mechanism, and the side of the third stamping block closest to the discharge port of the feeding mechanism has a cutting blade integrally formed.

[0014] Preferably, the unloading mandrel is located on both sides of the forming block, and the back of the unloading mandrel is driven by a power mechanism. The first stamping block, the second stamping block, the third stamping block, the fourth stamping block, the fifth stamping block and the sixth stamping block are all driven by a drive mechanism.

[0015] Preferably, the drive mechanism includes a base and a drive plate slidably mounted on the base. An eccentric wheel is rotatably mounted on the base. A first fixing block and a second fixing block adapted to the eccentric wheel are mounted on the top of the drive plate. The eccentric wheel is driven by planetary gears in the base plate, and the planetary gears are driven by a sun gear. The drive shaft of the eccentric wheel passes through a strip-shaped perforation on the drive plate. The eccentric wheel is in contact with the outer surface of the first fixing block around its perimeter. An action block capable of driving the second fixing block to move is also mounted on the bottom edge of the eccentric wheel.

[0016] By adopting the above technical solution, the feeding mechanism first conveys the steel strip to the forming mechanism. The steel strip is guided into the width limiting mechanism by two sets of limiting plates with guide ramps. The spacing between the limiting plates can be adjusted according to the requirements to adapt to the width of the steel strip. The spacing between the limiting plates can be adjusted by fixing them at different positions from the substrate with bolts. Subsequently, the sun gear in the substrate drives the planetary gears, which drive the eccentric wheels of each drive mechanism to rotate. The eccentric wheels push the second fixed block by contacting the first fixed block on the drive plate and the bottom action block, causing the drive plate on the base to slide, thereby driving the stamping components to move: the third stamping block cuts the steel strip entering the forming mechanism with an integrally formed cutting blade. At the same time, the first and second stamping blocks apply pressure from the top surface of the forming block to bend the two ends of the steel strip downwards. Then, the fourth and fifth stamping blocks apply pressure to the bent ends of the steel strip, causing the two ends of the steel strip to bend towards the bottom surface of the forming block. Finally, the sixth stamping block applies pressure to the steel strip on the bottom surface of the forming block, causing the steel strip to bend and conform to the outline of the forming block. During the molding process, the unloading mandrels on both sides of the molding block retract to the substrate under the action of the power mechanism. After the oval bushing is molded, the unloading mandrel pushes out the oval bushing, completing the molding process.

[0017] Preferably, a discharge frame is also installed on the substrate, wherein the center of the discharge frame is provided with a discharge port corresponding to the molding block, and the bottom of the discharge port adopts an outward guiding slope.

[0018] By adopting the above technical solution, after the oval bushing is formed, the unloading mandrel pushes the oval bushing out of the forming block and makes it fall into the discharge frame on the substrate. It then slides out of the equipment through the discharge port corresponding to the forming block at the center of the frame and along the bottom-outward guide slope, thus completing the entire forming and discharge process.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. In the forming mechanism of this application, the cooperation of multiple stamping components (first to sixth stamping blocks) with forming blocks and unloading mandrels enables precise all-round stamping and bending of the top, bottom and side arc surfaces of the steel strip. The design that the width of the second stamping block is consistent with the spacing of the limiting plate further enhances the limiting effect. Combined with the stable steel strip conveying of the feeding mechanism, it significantly improves the forming quality and product consistency of the oval bushing.

[0021] 2. The design of the width limiting mechanism and the material guiding structure of the discharge frame in this application improves the continuity and efficiency of production. The overall equipment structure, through the synergistic effect of each mechanism, comprehensively solves the problem of forming deviation in the prior art, and ensures the performance stability of the oval bushing in mechanical transmission, automobiles and other fields. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the oval bushing forming equipment;

[0023] Figure 2 This is a schematic diagram of the overall structure of the left front side of the oval bushing forming equipment.

[0024] Figure 3 This is a schematic diagram of the drive mechanism.

[0025] Explanation of reference numerals in the attached drawings: 1. Substrate; 2. Forming block; 3. Unloading mandrel; 4. Stamping assembly; 41. First stamping block; 42. Second stamping block; 43. Third stamping block; 431. Cutting blade; 44. Fourth stamping block; 45. Fifth stamping block; 46. Sixth stamping block; 5. Width limiting mechanism; 51. Limiting plate; 511. Guide slope; 6. Drive mechanism; 61. Base; 611. Eccentric wheel; 612. Actuating block; 62. Drive plate; 621. First fixing block; 622. Second fixing block; 7. Discharge frame; 71. Unloading port; 72. Guide slope. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0027] This application discloses an oval bushing forming device.

[0028] Reference Figure 1 , Figure 2 and Figure 3 A bushing forming device includes a feeding mechanism and a forming mechanism. The feeding mechanism, located at one end of the device, feeds a steel strip to the forming mechanism. The forming mechanism bends the steel strip to form a bushing, including a base plate 1, a forming block 2 installed at the center of the base plate 1, and a stripping mandrel 3. Several sets of stamping components 4 are distributed around the forming block 2. A width limiting mechanism 5 is provided at the end of the base plate 1 away from the feeding mechanism. The feeding mechanism smoothly and continuously feeds the steel strip from one end of the device to the forming mechanism. When the steel strip is fed to the area of ​​the base plate 1 of the forming mechanism, the forming block 2 at the center of the base plate 1, as the core forming component, works in conjunction with the several sets of stamping components 4 distributed around it. The stamping components 4 apply pressure to the steel strip, causing the steel strip to gradually bend and conform to the outline of the forming block 2, initially forming the shape of the bushing. During the steel strip bending and forming process, the width limiting mechanism 5 precisely limits the plate at both ends of the steel strip, effectively preventing the positional displacement of the metal plate ends when bent under force. After the oval bushing is formed, the unloading mandrel 3 is activated to push the formed oval bushing out of the forming block 2, thus completing the entire forming and unloading process of the oval bushing.

[0029] Reference Figure 1 , Figure 2 and Figure 3The feeding mechanism adopts gear feeding, lead screw feeding, or swing arm feeding. The feeding mechanism respectively adopts the gear feeding structure in the automatic stamping and bending forming machine with gear feeding (CN221754382U), the lead screw feeding structure in the automatic stamping and bending forming machine with lead screw feeding (CN221773199U), and the swing arm feeding mechanism in the automatic stamping and bending forming machine (CN117983746A).

[0030] Reference Figure 1 , Figure 2 and Figure 3The width limiting mechanism 5 includes two sets of parallel limiting plates 51, the spacing between which is adjustable. Each limiting plate 51 has a guide slope 511 on the side facing the feeding mechanism. The stamping assembly 4 includes a first stamping block 41 above the forming block 2 and a sixth stamping block 46 below it. The output ends of both blocks mate with the top and bottom surfaces of the forming block 2, respectively. The first stamping block 41 has a second stamping block 42 and a third stamping block 43 on either side, mate with the arc surfaces on either side of the top surface of the forming block 2. The sixth stamping block 46 has a fourth stamping block 44 and a fifth stamping block 45 on either side, mate with the arc surfaces on either side of the bottom surface. The second stamping block 42 is located on one side of the width limiting mechanism 5, and its width is the same as the spacing between the limiting plates 51 in the width limiting mechanism 5. The third stamping block 43 is located on one side of the feeding mechanism, and a cutting blade 431 is integrally formed on the side of the third stamping block 43 closest to the feeding mechanism's outlet. The unloading mandrel 3 is located on both sides of the forming block 2, and the back of the unloading mandrel 3 is driven by a power mechanism. The first stamping block 41, the second stamping block 42, the third stamping block 43, the fourth stamping block 44, the fifth stamping block 45, and the sixth stamping block 46 are all driven by the drive mechanism 6. The drive mechanism 6 includes a base 61 and a drive plate 62 slidably mounted on the base 61. An eccentric wheel 611 is rotatably mounted on the base 61. A first fixing block 621 and a second fixing block 622 adapted to the eccentric wheel 611 are mounted on the top of the drive plate 62. The eccentric wheel 611 is driven by planetary gears in the base plate 1, and the planetary gears are transmitted through a sun gear. The drive shaft of the eccentric wheel 611 passes through a strip-shaped perforation on the drive plate 62. The eccentric wheel 611 is in contact with the outer surface of the first fixing block 621 around its perimeter. An actuating block 612 capable of driving the second fixing block 622 to move is also mounted on the bottom edge of the eccentric wheel 611. The feeding mechanism first conveys the steel strip to the forming mechanism. The steel strip is guided into the width limiting mechanism 5 by two sets of limiting plates 51 with guide slopes 511. The spacing between the limiting plates 51 can be adjusted according to the requirements to match the width of the steel strip. The spacing between the limiting plates 51 can be adjusted by fixing them at different positions from the base plate 1 with bolts. Subsequently, the sun gear in the substrate 1 drives the planetary gears, which in turn drive the eccentric wheels 611 of each drive mechanism 6 to rotate. The eccentric wheels 611, through their contact with the first fixed block 621 on the drive plate 62 and the push of the second fixed block 622 by the bottom action block 612, drive the drive plate 62 on the base 61 to slide, thereby driving each stamping component 4 to move: the third stamping block 43 cuts the steel strip entering the forming mechanism through the integrally formed cutting blade 431. At the same time, the first stamping block 41 and the second stamping block 42 apply pressure from the top surface of the forming block 2 to bend the two ends of the steel strip downwards. Then, the fourth stamping block 44 and the fifth stamping block 45 are driven to apply pressure to the bent ends of the steel strip, so that the two ends of the steel strip bend towards the bottom surface of the forming block 2. Finally, the sixth stamping block 46 is driven to apply pressure to the steel strip on the bottom surface of the forming block 2, so that the steel strip bends and conforms to the outline of the forming block 2.During the molding process, the unloading mandrels 3 on both sides of the molding block 2 retract to the base plate 1 under the action of the power mechanism. After the oval bushing is molded, the unloading mandrels 3 push out the oval bushing, completing the molding process.

[0031] Reference Figure 1 , Figure 2 and Figure 3 A discharge frame 7 is also installed on the substrate 1. The discharge frame 7 has a discharge port 71 at its center corresponding to the forming block 2. The bottom of the discharge port 71 adopts an outward-facing guide slope 72. After the oval bushing is formed, the discharge mandrel 3 pushes the oval bushing out of the forming block 2, so that it falls into the discharge frame 7 on the substrate 1. It slides out of the equipment through the discharge port 71 at the center of the frame corresponding to the forming block 2 and along the outward-facing guide slope 72 at the bottom, completing the entire forming and discharge process.

[0032] Working principle: The feeding mechanism continuously conveys the steel strip to the forming mechanism through gear feeding, screw feeding, or swing arm feeding. After the steel strip is introduced into the forming mechanism, it passes above the forming block 2 and enters the width limiting mechanism 5 at the end away from the feeding mechanism. It enters between two sets of parallel and adjustable limiting plates 51 using the guide slope 511 of the limiting plate 51 facing the feeding mechanism, realizing the initial positioning of the steel strip in the width direction. Under the drive of the drive mechanism 6, each stamping component 4 operates in sequence: the third stamping block 43 cuts the steel strip entering the forming mechanism with the integrally formed cutting blade 431. At the same time, the first stamping block 41 and the second stamping block 42 apply pressure from the top surface of the forming block 2 to bend the two ends of the steel strip downward. Then, the fourth stamping block 44 and the fifth stamping block 45 are driven to apply pressure to the bent ends of the steel strip, so that the two ends of the steel strip bend towards the bottom surface of the forming block 2. Finally, the sixth stamping block 46 is driven to apply pressure to the steel strip on the bottom surface of the forming block 2, so that the steel strip bends and conforms to the contour of the forming block 2. During the molding process, the unloading mandrels 3 on both sides of the molding block 2 retract to the substrate 1 under the action of the power mechanism. After the oval bushing is molded, the unloading mandrels 3 push the oval bushing out, completing the molding process. Finally, the molded oval bushing is discharged from the unloading port 71 in the center of the discharge frame 7 on the substrate 1 through the unloading mandrels 3, and slides out of the equipment through the guide slope 72 at the bottom of the unloading port 71, completing the molding process of the entire oval bushing.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bushing forming device, characterized in that: It includes a feeding mechanism and a forming mechanism; the feeding mechanism is located at one end of the equipment and is used to feed steel strip to the forming mechanism; the forming mechanism is used to bend the steel strip to form an oval bushing, including a base plate (1) and a forming block (2) and a discharge mandrel (3) installed in the center of the base plate (1), and several sets of stamping components (4) are distributed around the forming block (2), and a width limiting mechanism (5) is provided at the end of the base plate (1) away from the feeding mechanism.

2. The oval bushing forming equipment according to claim 1, characterized in that: The feeding mechanism adopts gear feeding, lead screw feeding or swing arm feeding.

3. The oval bushing forming equipment according to claim 1, characterized in that: The width limiting mechanism (5) includes two sets of limiting plates (51) distributed in parallel, wherein the spacing between the limiting plates (51) is adjustable, and the limiting plate (51) is provided with a guide slope (511) on the side facing the feeding mechanism.

4. The oval bushing forming equipment according to claim 3, characterized in that: The stamping assembly (4) includes a first stamping block (41) above the forming block (2) and a sixth stamping block (46) below it, and the output ends of the two are respectively engaged with the top surface and bottom surface of the forming block (2). The first stamping block (41) is provided with a second stamping block (42) and a third stamping block (43) on both sides, and the two are respectively engaged with the arc surfaces on both sides of the top surface of the forming block (2). The sixth stamping block (46) is provided with a fourth stamping block (44) and a fifth stamping block (45) on both sides, and the two are respectively engaged with the arc surfaces on both sides of the bottom surface.

5. The oval bushing forming equipment according to claim 4, characterized in that: The second stamping block (42) is located on one side of the width limiting mechanism (5), and the width of the second stamping block (42) is the same as the spacing between the limiting plates (51) in the width limiting mechanism (5).

6. The oval bushing forming equipment according to claim 5, characterized in that: The third stamping block (43) is located on one side of the feeding mechanism, and a cutting blade (431) is integrally formed on the side of the third stamping block (43) near the discharge port of the feeding mechanism.

7. The oval bushing forming equipment according to claim 6, characterized in that: The unloading mandrel (3) is located on both sides of the forming block (2), and the back of the unloading mandrel (3) is driven by a power mechanism. The first stamping block (41), the second stamping block (42), the third stamping block (43), the fourth stamping block (44), the fifth stamping block (45) and the sixth stamping block (46) are all driven by a drive mechanism (6).

8. The oval bushing forming equipment according to claim 7, characterized in that: The drive mechanism (6) includes a base (61) and a drive plate (62) slidably mounted on the base (61). An eccentric wheel (611) is rotatably mounted on the base (61). A first fixing block (621) and a second fixing block (622) adapted to the eccentric wheel (611) are mounted on the top of the drive plate (62). The eccentric wheel (611) is driven by planetary gears in the base plate (1), and the planetary gears are driven by a sun gear. The drive shaft of the eccentric wheel (611) passes through a strip-shaped perforation on the drive plate (62). The eccentric wheel (611) is in contact with the outer surface of the first fixing block (621) around its perimeter. An action block (612) capable of driving the second fixing block (622) to move is also mounted on the bottom edge of the eccentric wheel (611).

9. The oval bushing forming equipment according to claim 1, characterized in that: The substrate (1) is also equipped with a discharge frame (7), wherein the center of the discharge frame (7) is provided with a discharge port (71) corresponding to the molding block (2), and the bottom of the discharge port (71) adopts a guide slope (72) facing outward.

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