Rubber bushing notching device

Abstract

The utility model provides a rubber bushing notching device. The rubber bushing notching device comprises a machine base, a limiting mechanism and a cutting mechanism. The limiting mechanism comprises a rotation shaft and a limiting protrusion. The at least one rotation shaft is rotatably arranged at the top of the base, the upper half section of the rotation shaft is reduced to form a stepped surface, and the at least one limiting bulge is arranged on the stepped surface and used for positioning the rubber bushing; the cutting mechanism comprises a two-axis movement assembly and a cutting knife. A two-axis movement assembly integrating movement in the height direction and movement in the radial direction of the rotation shaft is arranged beside the rotation shaft and installed at the top of the machine base; the cutting knife is detachably installed at the movable end of the two-axis movement assembly, and the cutting edge end of the cutting knife is in an inverted L shape and faces the autorotation direction of the autorotation shaft. According to the utility model, the bidirectional cutting edge design of the L-shaped cutting tool is combined with the dynamic control of the rotation shaft, so that the equipment has two processing modes.

Description

Technical Field

[0001] This utility model relates to the field of rubber bushing processing technology, and in particular to a rubber bushing cutting device. Background Technology

[0002] Currently, the industry generally uses injection molding to produce rubber bushings. To meet product assembly requirements, existing processing equipment mainly uses a top-down vertical cutting method for opening. Although this process can effectively complete the bushing opening, it has the following drawbacks:

[0003] First, existing equipment has a single functional focus; its processing system is designed only for the sprue opening process and lacks the ability to simultaneously handle injection molding defects. Due to the limitations of the cutting tool's processing path and motion mode, it cannot effectively remove sprue residue and burrs generated during the injection molding process, resulting in the need for an additional deburring process and creating process breakpoints. Second, for specific product types that only require the removal of molding defects without the need for sprue opening (such as integral rubber bushings), existing sprue opening equipment lacks an independent sprue treatment module, indirectly leading to problems such as process fragmentation, low equipment utilization, and increased processing costs. Especially in flexible production scenarios with multiple varieties and small batches, existing sprue opening equipment can hardly meet actual production needs. Utility Model Content

[0004] Therefore, it is necessary to provide a rubber bushing cutting device to address the problem that existing cutting equipment cannot simultaneously handle injection molding defects.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A rubber bushing cutting device, comprising a base, a limiting mechanism, and a cutting mechanism.

[0007] The limiting mechanism includes a rotating shaft and a limiting protrusion; at least one rotating shaft is rotatably mounted on the top of the machine base, the upper half of the rotating shaft is tapered to form a stepped surface, and at least one limiting protrusion is mounted on the stepped surface to position the rubber bushing.

[0008] The cutting mechanism includes a two-axis motion assembly and a cutting blade; the two-axis motion assembly, which integrates vertical and radial movement of the rotation axis, is located beside the rotation axis and is mounted on the top of the base; the cutting blade is detachably mounted on the movable end of the two-axis motion assembly, and the cutting edge of the cutting blade is inverted L-shaped and faces the rotation direction of the rotation axis.

[0009] Furthermore, a rotating platform is rotatably mounted on the top of the base, and the self-rotating shaft is rotatably mounted on the rotating platform.

[0010] Furthermore, the rotation axis is directly driven by a servo motor, which is mounted on a rotating platform.

[0011] Furthermore, a servo motor is installed at the bottom of the rotating platform and next to the rotation axis, and the output shaft of the servo motor is connected to the rotation axis by gear transmission.

[0012] Furthermore, the two-axis motion assembly includes a support frame, a first cylinder, a linkage bracket, a second cylinder, and a tool holder; the support frame is located on the top of the machine base, and the first cylinder is longitudinally installed on the side of the support frame away from the limiting mechanism. The movable end of the first cylinder faces upward and is connected to the linkage bracket. The second cylinder is installed laterally on the end of the linkage bracket facing the limiting mechanism. The movable end of the second cylinder is fixedly connected to the tool holder, and the cutting blade is detachably installed on the tool holder.

[0013] Furthermore, the support frame is slidably mounted on the top of the base, and its sliding trajectory is an arc-shaped trajectory that matches the rotation of the rotating platform.

[0014] Furthermore, the support frame is fixedly mounted on the top of the machine base, and at least two adjustable cutting blades are detachably mounted on the blade holder.

[0015] Furthermore, a linear slide module is fixedly installed on the top of the base; a self-rotating shaft is rotatably installed on the movable end of the linear slide module, and the linear trajectory of the linear slide module faces the cutting blade.

[0016] Furthermore, a sensor for sensing the position of the rotation axis is installed on the part of the two-axis motion assembly facing the rotation axis.

[0017] Furthermore, a protective shield is installed on the top of the base, near the cutting blade.

[0018] Compared with the prior art, the beneficial effects of this utility model include:

[0019] 1. By combining the bidirectional cutting edge design of the L-shaped cutting tool with the dynamic control of the rotating shaft, the equipment has two processing modes: when the rotating shaft is stationary, it uses the horizontal cutting edge to complete high-precision horizontal cutting in the radial direction, with a smooth cut and no material tearing; when the rotating shaft actively drives the rubber bushing to rotate, the edge of the rubber bushing or burrs forms a progressive contact with the vertical cutting edge, and the dual action of rotational friction and shearing force achieves efficient cleaning, avoiding surface damage caused by traditional processes, so that a single machine can simultaneously meet the needs of opening and defect treatment.

[0020] 2. Physical separation of loading / unloading stations and cutting stations is achieved through a rotating platform or linear slide module, avoiding the risk of personnel accidentally touching the cutting tools and improving processing safety. Attached Figure Description

[0021] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0022] Figure 1 This is a perspective view of the rubber bushing cutting device described in Embodiment 1 of this utility model;

[0023] Figure 2 For based on Figure 1 Another perspective perspective of the rubber bushing cutting device;

[0024] Figure 3 For based on Figure 1 A schematic diagram of the cutting mechanism;

[0025] Figure 4 This is a perspective view of the rubber bushing cutting device described in Example 3.

[0026] The following are the labels in the diagram: 1. Base; 11. Rotating platform; 2. Limiting mechanism; 21. Rotation shaft; 22. Limiting protrusion; 3. Cutting mechanism; 31. Two-axis motion assembly; 311. Support frame; 312. First cylinder; 313. Linkage bracket; 314. Second cylinder; 315. Tool holder; 32. Cutting blade; 4. Shielding cover. Detailed Implementation

[0027] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0028] Example 1

[0029] This embodiment describes a rubber bushing cutting device, mainly comprising a base 1, a limiting mechanism 2, and a cutting mechanism 3. The top of the base 1 has a machined flat mounting surface, and shock-absorbing pads are installed at the four corners. A rotating platform 11 is rotatably mounted on the top of the base 1. The driving component that drives the rotating platform 11 is located inside the base 1, preferably a motor. A shaft is located at the center of the rotating platform 11, and a hole is opened in the top of the base 1 through which the shaft passes. The shaft and the base 1 are rotatably connected via bearings or other means to achieve the rotational connection of the rotating platform 11.

[0030] The rotating shafts 21 are rotatably mounted on the rotating platform 11. Preferably, multiple rotating shafts 21 are equidistantly distributed along the circumference of the rotating platform 11 and located at the top edge of the rotating platform 11. The rotating shafts 21 and the rotating platform 11 can also be rotatably connected via bearings. The rotating shafts 21 can be directly driven by a servo motor, which is mounted on the top of the rotating platform 11. Alternatively, the rotating shafts 21 and the rotating platform 11 can be rotatably connected via bearings, with the servo motor located at the bottom of the rotating platform 11 and its output shaft connected to one end of the rotating shaft 21 that extends to the bottom of the rotating platform 11.

[0031] The upper half of the self-rotating shaft 21 is tapered to form a stepped surface, and at least one limiting protrusion 22 is provided on the stepped surface to position the rubber bushing. Therefore, the end face of the rubber bushing has a positioning hole that matches the limiting protrusion 22.

[0032] The cutting mechanism 3 mainly includes a two-axis motion assembly 31 and a cutting blade 32. A two-axis motion assembly 31, integrating vertical and radial movement of the rotation axis 21, is located beside the rotation axis 21. The two-axis motion assembly 31 includes a support frame 311, a first cylinder 312, a linkage bracket 313, a second cylinder 314, and a blade holder 315. The support frame 311 is slidably mounted on the top of the base 1, and its sliding trajectory is an arc-shaped trajectory matching the rotation of the rotating platform 11. The arc of the arc-shaped trajectory does not exceed 180°. Specifically, the bottom of the support frame 311 has a T-shaped slider, and the top of the base 1 has a T-shaped arc rail; the two work together to achieve the sliding of the support frame 311. A first cylinder 312, arranged longitudinally, is mounted on the side of the support frame 311 opposite to the rotation axis 21. The movable end of the first cylinder 312 faces upward and is connected to the linkage bracket 313. A second cylinder 314, arranged laterally, is mounted on the end of the linkage bracket 313 facing the limiting mechanism 2. A tool holder 315 is fixedly connected to the movable end of the second cylinder 314, and the cutting blade 32 is detachably mounted on the tool holder 315. To facilitate the driving of the two-axis motion assembly 31, a sensor for sensing the position of the rotation axis 21 is installed on the part of the two-axis motion assembly 31 facing the rotation axis 21.

[0033] Since the cutting edge of the cutting blade 32 is inverted L-shaped and faces the rotation direction of the rotating shaft 21, when it is necessary to remove the sprue and burrs on the top of the rubber bushing, the dual-axis motion assembly 31 is driven to move closer to the rubber bushing, so that the horizontal cutting edge of the cutting blade 32 is basically flush with the top of the rubber bushing, and the longitudinal cutting edge is basically flush with the outer circumference of the rubber bushing. The rotation of the rotating shaft 21 causes the rubber bushing to rotate, and the cutting blade 32 removes the sprue and burrs. When it is necessary to open the rubber bushing, the rotating shaft 21 is stopped, and the dual-axis motion assembly 31 is driven to move the longitudinal cutting edge of the cutting blade 32 radially inward along the rubber bushing until it contacts the rotating shaft 21. Then, according to the opening size, the dual-axis motion assembly 31 moves in an arc on the machine base 1 to perform the cutting operation again to complete the opening. The two-axis motion component 31 can be manually adjusted to achieve arc-shaped motion, or an arc-shaped rack, motor and gear can be used to achieve automatic arc-shaped motion. That is, an arc-shaped rack is installed on the arc-shaped track, the gear meshes with the arc-shaped rack, and the motor drives the gear to achieve automatic arc-shaped motion.

[0034] It should be emphasized that during this operation, the horizontal blade is higher than the top of the rubber bushing, and the length of the longitudinal blade is longer than the axial length of the rubber bushing. To prevent accidental activation of the cutting blade 32 during operation, a protective shield 4 is installed on the top of the base 1 near the cutting blade 32.

[0035] In practical applications, the rubber bushing to be processed is placed on the stepped surface of the rotating shaft 21, and then the rotating platform 11 rotates to the processing point. The two-axis motion component 31 drives the cutting blade 32 to perform deburring or opening operations on the rubber bushing. The processed bushing is rotated back to the loading point by the rotating platform 11 and removed to replace the new rubber bushing to be processed.

[0036] This embodiment combines the bidirectional cutting edge design of the L-shaped cutting blades 32 with the dynamic control of the rotating shaft 21, enabling the equipment to have two processing modes. When the rotating shaft 21 is stationary, the horizontal cutting edge is used to complete high-precision horizontal cutting in the radial direction, resulting in a smooth cut without material tearing. When the rotating shaft 21 actively drives the rubber bushing to rotate, the sprue or burr on the edge of the product makes progressive contact with the vertical cutting edge, achieving efficient cleaning through the dual action of rotational friction and shearing force, avoiding surface damage caused by traditional grinding processes. This allows a single machine to simultaneously meet the needs of opening and defect treatment.

[0037] Example 2

[0038] This embodiment introduces a rubber bushing cutting device, which has a basically the same structure as the rubber bushing cutting device introduced in Embodiment 1. The difference is that the rotation shaft 21 in this embodiment is driven by a servo motor and gears. That is, a servo motor is installed at the bottom of the rotating platform 11 and next to the rotation shaft 21. Gears are installed on the output shaft of the servo motor and at the bottom of the rotation shaft 21, and the gears mesh to achieve transmission.

[0039] Compared with Example 1, this embodiment makes the maintenance of the rotation of the rotation shaft 21 more convenient.

[0040] Example 3

[0041] This embodiment introduces a rubber bushing cutting device, which has a basically the same structure as the rubber bushing cutting device introduced in Embodiment 1. The difference is that in this embodiment, the support frame 311 is fixedly mounted on the top of the machine base 1, and at least two adjustable-pitch cutting blades 32 are detachably mounted on the blade holder 315. The distance between the two cutting blades 32 is adjusted according to the required opening size.

[0042] Compared with Example 1, this embodiment has higher efficiency in opening operations.

[0043] Example 4

[0044] This embodiment introduces a rubber bushing cutting device, which is basically the same in structure as the rubber bushing cutting device introduced in Embodiment 1. The difference is that this embodiment uses a linear slide module instead of the rotary platform 11. A linear slide module is fixedly installed on the top of the base 1; the spindle 21 is rotatably installed on the movable end of the linear slide module, and the linear trajectory of the linear slide module faces the cutting blade 32. The end of the linear slide module is the processing point. The cutting blade 32 processes the rubber bushing through the two-axis motion component 31, and the reciprocating movement of the linear slide module is used for processing and loading / unloading operations.

[0045] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A rubber bushing cutting device, characterized in that, It includes: Base (1); The limiting mechanism (2) includes a rotating shaft (21) and a limiting protrusion (22); at least one rotating shaft (21) is rotatably disposed on the top of the base (1), the upper half of the rotating shaft (21) is narrowed to form a stepped surface, and at least one limiting protrusion (22) is disposed on the stepped surface to position the rubber bushing. The cutting mechanism (3) includes a two-axis motion assembly (31) and a cutting blade (32); the two-axis motion assembly (31) is integrated with the height direction and the radial movement of the rotation axis (21) on the side of the rotation axis (21), and the two-axis motion assembly (31) is mounted on the top of the base (1); the cutting blade (32) is detachably mounted on the movable end of the two-axis motion assembly (31), and the cutting edge of the cutting blade (32) is inverted L-shaped and faces the rotation direction of the rotation axis (21).

2. The rubber bushing cutting device according to claim 1, characterized in that, A rotating platform (11) is rotatably mounted on the top of the base (1), and a self-rotating shaft (21) is rotatably mounted on the rotating platform (11).

3. The rubber bushing cutting device according to claim 2, characterized in that, The self-rotating shaft (21) is directly driven by a servo motor, which is mounted on the rotating platform (11).

4. The rubber bushing cutting device according to claim 2, characterized in that, A servo motor is installed at the bottom of the rotating platform (11) and next to the rotation axis (21). The output shaft of the servo motor is connected to the rotation axis (21) by gear transmission.

5. The rubber bushing cutting device according to claim 2, characterized in that, The two-axis motion assembly (31) includes a support frame (311), a first cylinder (312), a linkage bracket (313), a second cylinder (314), and a tool holder (315). The support frame (311) is set on the top of the base (1). The first cylinder (312) is longitudinally installed on the side of the support frame (311) away from the limiting mechanism (2). The movable end of the first cylinder (312) faces upward and is connected to the linkage bracket (313). The second cylinder (314) is installed horizontally on the end of the linkage bracket (313) facing the limiting mechanism (2). The movable end of the second cylinder (314) is fixedly connected to the tool holder (315). The cutting blade (32) is detachably installed on the tool holder (315).

6. The rubber bushing cutting device according to claim 5, characterized in that, The support frame (311) is slidably mounted on the top of the base (1), and the sliding trajectory is an arc-shaped trajectory that matches the rotation of the rotating platform (11).

7. The rubber bushing cutting device according to claim 5, characterized in that, The support frame (311) is fixedly mounted on the top of the base (1), and at least two adjustable cutting blades (32) are detachably mounted on the blade holder (315).

8. The rubber bushing cutting device according to claim 1, characterized in that, A linear slide module is fixedly installed on the top of the base (1); the self-rotating shaft (21) is rotatably installed on the movable end of the linear slide module, and the linear trajectory of the linear slide module faces the cutting blade (32).

9. The rubber bushing cutting device according to claim 1, characterized in that, A sensor for sensing the position of the rotation axis (21) is installed on the part of the two-axis motion assembly (31) facing the rotation axis (21).

10. The rubber bushing cutting device according to claim 1, characterized in that, A protective shield (4) is installed on the top of the base (1) and near the cutting blade (32).

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