A kind of fixture split rotary mechanism for automobile dust cover trimming device

Abstract

The utility model relates to a kind of clamp split rotary mechanism for automobile dust cover trimming device, including clamp seat, rotary gear, clamp, locking mechanism, transmission gear and drive motor;Clamp seat, rotary gear and clamp are all divided horizontally from middle part, form upper clamp seat, lower clamp seat, upper half gear, lower half gear, upper clamp and lower clamp;Upper and lower clamp seat is respectively provided with upper and lower rotary cavity, and upper and lower half gear are respectively rotationally arranged in upper and lower rotary cavity, and upper and lower half gear split in rotary cavity, so that rotary gear can rotate in annular rotary cavity after unlocking, and rotary gear is limited by annular rotary cavity, and the center of upper and lower half gear is respectively coaxially fixedly connected with upper and lower clamp for clamping workpiece, so that clamp can rotate with the rotation of rotary gear, thereby solve the problem that clamp needs to open and close and shaft center is hollow, difficult to be used as rotating body, so that workpiece can rotate with clamp as a whole.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a clamping and rotating mechanism for a car dust cover cutting edge device. Background Technology

[0002] In a car's suspension system, vibrations are generated by the elastic elements under impact. To improve ride comfort, shock absorbers are installed in parallel with the elastic elements to dampen these vibrations. A shock absorber typically consists of a telescopic rod and a damping bar. One end of the telescopic rod moves within the damping bar, while the other end connects to the vehicle body. Because the telescopic rod comes into contact with the outside environment during its extension and retraction, it inevitably brings dust and other impurities into the damping bar. Currently, dust covers are generally fitted onto the surface of the telescopic rod to address this issue.

[0003] Existing automotive shock absorber dust cover cutting devices, such as the automotive rubber dust cover cutting equipment with patent number CN222570874U, mainly involve clamping and fixing the workpiece in a fixture, with the fixture stationary and the cutter rotating to perform rotary cutting on the material head. However, in the aforementioned prior art, during the cutting action, the cutter cannot feed radially towards the material head. The cutter encounters all the cutting resistance of the material from the very beginning, resulting in a large impact. This leads to a high load on the cutter, easy wear, and also makes the dust cover prone to tearing and fraying. If a feeding mechanism is added based on the aforementioned prior art or the conventional method of stationary fixture and rotating cutter, allowing the cutter to feed towards the material head, the cutter needs to simultaneously perform linear feeding and rotary cutting actions, making the cutter structure complex, its operation unstable, and its adjustment difficult.

[0004] Some designs propose that the fixture rotates with the workpiece, using a linear feed of the tool and rotation of the fixture to simplify the complexity of the tool. However, the fixture needs to open and close vertically, and the middle part needs to hold the dust cover. Therefore, the rotation center of the fixture must be hollow and cannot be directly connected to the rotation center shaft. This makes it impossible to use conventional center shaft type rotation mechanism, making it difficult to perform rotational transmission and fixed limit, so the fixture is difficult to use as the main rotating body.

[0005] Based on this, a clamping and rotating mechanism for a car dust cover trimming device is studied. Utility Model Content

[0006] Therefore, the purpose of this utility model is to provide a clamping and rotating mechanism for a car dust cover cutting device, which can effectively solve the problem that the clamp needs to be opened and closed and the shaft is hollow, making it difficult to set a central shaft rotating mechanism, thus making it difficult to use as the rotating body.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A clamping and rotating mechanism for a car dust cover trimming device includes a clamp base, a rotating gear, a clamp, a locking mechanism, a transmission gear, and a drive motor.

[0009] The clamp seat, rotating gear, and clamp are all horizontally cut from the middle to form an upper clamp seat, a lower clamp seat, an upper half gear, a lower half gear, an upper clamp, and a lower clamp;

[0010] The upper clamping seat has an upper rotating cavity with a lower opening, and the lower clamping seat has a lower rotating cavity with an upper opening. Both the upper clamping seat and the lower clamping seat are equipped with locking mechanisms.

[0011] The upper and lower rotating cavities are joined together to form a ring-shaped rotating cavity;

[0012] The upper half gear is rotatably disposed in the upper rotating cavity and locked by a locking mechanism. The upper half gear is coaxially and fixedly connected to the upper clamp.

[0013] The lower half gear is rotatably disposed in the lower rotating cavity and locked by a locking mechanism; the lower half gear is coaxially and fixedly connected to the lower clamp.

[0014] When the upper clamp seat and the lower clamp seat are assembled, the upper half gear and the lower half gear are assembled in the annular rotating cavity, so that the rotating gear can rotate in the annular rotating cavity after being unlocked, and the rotating gear is limited by the annular rotating cavity.

[0015] The rotating gear is connected to the transmission gear, and the transmission gear is connected to the drive motor.

[0016] Furthermore, the locking mechanism includes a locking cylinder, and a locking cylinder is installed on both the upper clamp seat and the lower clamp seat;

[0017] The upper clamping seat and the upper half gear, and the lower clamping seat and the lower half gear are all provided with corresponding limit holes; the telescopic rod of the locking cylinder passes through the limit hole to lock and fix the corresponding upper half gear or lower half gear.

[0018] Furthermore, each of the locking cylinders has two sets on the upper clamp seat and the limiting seat.

[0019] Furthermore, an opening is provided at the bottom of the lower rotating cavity, through which the teeth of the rotating gear pass and are connected to the transmission gear.

[0020] Furthermore, the rotating gear is annular, and an mounting ring is fixedly connected to its inner circle;

[0021] The fixture base has clearance holes that allow the mounting ring to rotate.

[0022] The mounting ring is divided into an upper mounting ring and a lower mounting ring from the middle, and the upper mounting ring and the lower mounting ring are coaxially fixedly connected to the upper clamp and the lower clamp, respectively.

[0023] Furthermore, both the upper and lower mounting rings are provided with threaded holes, which are symmetrically located on both sides of the rotating gear.

[0024] The upper and lower clamps are respectively provided with countersunk holes, and a connector is inserted through the countersunk holes. The connector is threadedly connected to the threaded hole.

[0025] The beneficial effects of the above technical solution are:

[0026] This invention horizontally divides the clamp base, rotating gear, and clamp from the middle to form an upper clamp base and a lower clamp base, an upper half gear and a lower half gear, and an upper clamp and a lower clamp, facilitating the opening and closing of the clamp. The upper and lower clamp bases each have upper and lower rotating cavities that can be joined to form an annular rotating cavity to accommodate the rotating gear and provide circumferential restraint. When the upper and lower clamp bases are joined, the upper and lower half gears engage within the annular rotating cavity, allowing the rotating gear to rotate within it after unlocking, and providing circumferential restraint. The center of the upper and lower half gears... The upper and lower clamps for holding the workpiece are coaxially fixedly connected, allowing the clamps to rotate with the rotating gear. This solves the problem that the clamps need to open and close, and the shaft is hollow, making it difficult to set up a central shaft rotating mechanism, thus making it difficult to serve as the main rotating body. The workpiece can rotate as a whole with the clamp. In combination with a cutting tool that can feed in a straight line, a cutting method of straight tool feed and clamp rotation is realized. This simplifies the complexity of the cutting tool mechanism and avoids the problems of structural complexity, low control accuracy, and unstable force caused by concentrating both rotation and feed actions in the cutting tool. It has the advantages of compact structure, stable cutting, and easy maintenance.

[0027] In addition, the fixture base is equipped with a locking mechanism to lock and fix the rotating gear when the fixture base is opened, preventing the rotating gear from loosening, shifting, or falling. Attached Figure Description

[0028] Figure 1 A three-dimensional schematic diagram of the lifting cylinder of the edge trimming device when it is lowered;

[0029] Figure 2 This is a three-dimensional schematic diagram of the cutting device from the rear view direction;

[0030] Figure 3 A three-dimensional schematic diagram of the lifting cylinder of the edge trimming device when it is raised;

[0031] Figure 4 This is an assembly diagram of the tool holder, the feed mechanism, and the tool transport mechanism;

[0032] Figure 5 This is a three-dimensional schematic diagram of the rotating mechanism;

[0033] Figure 6 This is a front view schematic diagram of the rotating mechanism;

[0034] Figure 7 This is a side sectional view of the rotating mechanism;

[0035] Figure 8 This is a three-dimensional schematic diagram of the upper gear.

[0036] Reference numerals in the attached diagram: 1 is the machine frame, 2 is the clamping base, 3 is the lifting cylinder, 4 is the tool holder, 5 is the clamp, 6 is the rotary gear, 7 is the tool feeding mechanism, 8 is the tool transport mechanism, 9 is the locking cylinder, 10 is the transmission gear, 11 is the drive motor, 12 is the limit hole, 101 is the worktable, 102 is the support frame, 103 is the lifting cylinder frame, 104 is the guide rail, 105 is the slider, 106 is the guide plate, 107 is the material dropping hole; 201 is the upper clamping base, 202 is the lower clamp. The components are: 203 is the upper rotating cavity, 204 is the lower rotating cavity, 205 is the clearance hole, 206 is the countersunk hole, and 207 is the connector; 401 is the cutting blade, 501 is the upper clamp, 502 is the lower clamp, 601 is the upper half gear, 602 is the lower half gear, 603 is the mounting ring, and 604 is the threaded hole; 701 is the feed base, 702 is the feed screw, 703 is the feed motor, and 704 is the feed slider; 801 is the tool transport slide rail, and 802 is the tool transport slider. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0038] This embodiment aims to provide an edge-cutting device for an automotive dust cover and a clamping and rotating mechanism for it. It is mainly used to cut the material head of the dust cover. It addresses the problem that the clamp needs to open and close and has a hollow shaft, making it difficult to set up a central shaft rotating mechanism, thus making it difficult to use as the main rotating body.

[0039] A dust cover trimming device for automobiles, such as Figure 1 and Figure 2 It includes a frame 1, a worktable 101, a fixture seat 2, a lifting cylinder 3, and a tool holder 4. The worktable 101 is horizontally fixed on the frame 1, and the lifting cylinder 3 is fixedly installed above the worktable 101.

[0040] The clamp seat 2 is used to clamp the dust cover workpiece to be cut. The clamp seat 2 is horizontally cut from the middle to form an upper clamp seat 201 and a lower clamp seat 202.

[0041] The upper clamp seat 201 is fixedly connected to the telescopic rod of the lifting cylinder 3, so that it moves with the telescopic rod of the lifting cylinder 3 rather than moving up and down. Specifically, four support frames 102 are vertically fixed on the workbench 101. The top of the support frame 102 is fixedly connected to the lifting cylinder frame 103. The lifting cylinder 3 is fixedly mounted on the lifting cylinder frame 103. The inner surface of the support frame 102 is vertically fixedly provided with a guide rail 104. A slider 105 is vertically slidably mounted on the guide rail 104. The upper surface of the upper clamp seat 201 is fixedly provided with a guide plate 106. The guide plate 106 is fixedly connected to the slider 105, so that the upper clamp seat 201 can be vertically guided during the lifting process, improving the stability of operation.

[0042] The lower clamp seat 202 is fixedly mounted on the worktable 101 and located directly below the upper clamp seat 201. When the telescopic rod of the lifting cylinder 3 moves downward to its maximum position, the upper clamp seat 201 engages with the lower clamp seat 202 to limit the workpiece. Figure 3 When the extension rod of the lifting cylinder 3 moves upward, the upper clamp seat 201 moves upward, thereby opening the clamp seat 2 to facilitate the placement and removal of the workpiece.

[0043] The tool holder 4 is set on the worktable 101 and located to the side of the lower fixture seat 202. The tool holder 4 is equipped with a cutting blade 401.

[0044] The tool holder 4 is equipped with a tool feeding mechanism 7, which allows the cutting blade 401 to move toward or away from the workpiece, thereby completing the tool feeding and retraction. Figure 1-4 The feed mechanism 7 includes a feed base 701, a feed screw 702, a feed motor 703, and a feed slider 704.

[0045] The tool holder is mounted on the worktable 101. A feed screw 702 is rotatably mounted on the feed base 701 in the front-to-back direction, and the feed screw 702 is connected to the feed motor 703. The feed slider 704 is slidably mounted on the feed base 701 via a guide groove and is threadedly connected to the feed screw 702. The tool holder 4 is fixed on the feed slider 704. By controlling the forward and reverse rotation of the feed motor 703, the screw is driven to rotate forward and reverse, thereby causing the feed slider 704 and the tool holder to move closer to or further away from the workpiece to complete the feed and retraction actions. This avoids the cutting blade 401 and the workpiece encountering excessive cutting resistance and impact at the start of cutting, improving the service life of the cutting blade 401 and reducing the likelihood of the dust cover cracking or tearing during cutting.

[0046] To facilitate adjustment of the left and right position of the tool holder, a tool transport mechanism 8 is also included. The tool transport mechanism 8 includes a tool transport slide rail 801 and a tool transport slider 802. The tool transport slide rail 801 is fixedly mounted on the worktable 101 in the left and right direction. The tool transport slider 802 is slidably mounted on the tool transport slide rail 801, and the tool feed base 701 is fixed on the tool transport slider 802. In this embodiment, the left and right position of the tool holder is adjusted by directly pushing the tool holder left and right. The position is mainly maintained by the friction between the tool transport slider 802 and the tool transport slide rail 801. In other embodiments, fastening screws can also be provided on the tool transport slider 802 to maintain the position.

[0047] The lower fixture 202 is equipped with a tool holder, a tool feeding mechanism 7 and a tool transport mechanism 8 on both the left and right sides to cut the material heads on both sides of the workpiece at the same time, thereby improving process efficiency.

[0048] The workbench 101 has a through-hole 107, which is located on the left and right sides of the lower clamp seat 202. A collection frame can be set in or below the discharge hole 107 to collect the cut material.

[0049] like Figure 5 The lower clamp 502 is rotatably disposed in the lower clamp seat 202, and the upper clamp 501 is rotatably disposed in the upper clamp seat 201. The lower clamp seat 202 is provided with a rotating mechanism. When the upper clamp seat 201 moves downward to assemble with the lower clamp seat 202, the upper clamp 501 and the lower clamp 502 are assembled and rotated by the rotating mechanism.

[0050] A clamping and rotating mechanism for a car dust cover trimming device, such as Figure 5 and Figure 6 The rotating mechanism includes a clamp seat 2, a rotating gear 6, a clamp 5, a locking mechanism, a transmission gear 10, and a drive motor 11. The clamp seat 2, the rotating gear 6, and the clamp 5 are all horizontally cut from the middle to form an upper clamp seat 201, a lower clamp seat 202, an upper half gear 601, a lower half gear 602, an upper clamp 501, and a lower clamp 502.

[0051] like Figure 5 and Figure 7 The upper clamping seat 201 has an upper rotating cavity 203 with a lower opening, and the lower clamping seat 202 has a lower rotating cavity 204 with an upper opening. When the lifting cylinder 3 descends to its lowest point, the upper clamping seat 201 and the lower clamping seat 202 are joined together. At this time, the upper and lower rotating cavities 204 are joined together to form an annular rotating cavity for the rotating gear 6 to rotate, and to limit the rotation of the rotating gear 6 when it rotates.

[0052] Both the upper clamping seat 201 and the lower clamping seat 202 are equipped with locking mechanisms. The upper half gear 601 is rotatably mounted in the upper rotating cavity 203 and is fixed in position by the locking mechanism when not rotating. The lower half gear 602 is rotatably mounted in the lower rotating cavity 204 and is fixed in position by the locking mechanism when not rotating.

[0053] The rotating gear 6 is connected to the transmission gear 10, which in turn is connected to the drive motor 11. Both the transmission gear 10 and the drive motor 11 are mounted on the frame 1. An opening is provided at the bottom of the lower rotating cavity 204, through which the teeth of the rotating gear 6 pass and are connected to the transmission gear 10. The drive motor 11 is a servo motor, capable of accurately controlling the rotation angle of the rotating gear 6 and resetting it to its initial angle.

[0054] When the lifting cylinder 3 descends to its lowest point, the upper half gear 601 and the lower half gear 602 combine to form a ring-shaped rotating gear 6, and the upper and lower rotating cavities combine to form a ring-shaped rotating cavity. At this time, the locking mechanism unlocks, the drive motor 11 rotates, and drives the rotating gear 6 to rotate through the transmission gear 10. During the rotation, the rotating cavity mainly limits the rotation of the rotating gear 6. Therefore, the gap between the rotating cavity and the rotating gear 6 is small to avoid excessive eccentricity of the rotating gear 6. The low-speed operation of the drive motor 11 ensures that it can work with the cutting blade 401 to rotate and cut the workpiece head during the rotation.

[0055] Furthermore, such as Figure 8 The rotating gear 6 is annular, and a mounting ring 603 is fixedly connected to its inner circle; the fixture seat 2 has a clearance hole 205 that rotatably engages with the mounting ring 603. The mounting ring 603 is rotatably positioned on the clearance hole 205, which can prevent the tooth tip of the rotating gear 6 from directly rubbing against the rotating cavity and reduce wear on the gear tooth tip.

[0056] Mounting ring 603 is also divided into an upper mounting ring and a lower mounting ring from the middle. The inner circle of the upper mounting ring is coaxially fixedly connected to the upper clamp 501; the inner circle of the lower mounting ring is coaxially fixedly connected to the lower clamp 502, so that the clamp 5 can rotate with the rotation of the rotating gear 6. When the lifting cylinder 3 descends to the lowest point, the upper and lower clamps are joined together and closed to clamp and limit the workpiece, preventing the workpiece from slipping during the rotary cutting process.

[0057] like Figure 5-8 Both the upper and lower mounting rings are provided with threaded holes 604, which are symmetrically located on both sides of the rotating gear 6. The upper clamp 501 and the lower clamp 502 are respectively provided with countersunk holes 206. A connector 207 is provided through the countersunk hole 206. The connector 207 is a countersunk screw. The connector 207 is threadedly connected to the threaded hole 604, so that the clamp 5 is fixedly connected to the rotating gear 6.

[0058] Since the rotating gear 6 is loosely fitted in the rotating cavity, it needs to be locked and fixed when not rotating. The locking mechanism includes a locking cylinder 9, which is installed on both the upper clamping seat 201 and the lower clamping seat 202. Limiting holes 12 are provided on the upper clamping seat 201 and the upper half gear 601, and on the lower clamping seat 202 and the lower half gear 602, respectively. The telescopic rod of the locking cylinder 9 passes through the limiting hole 12 to lock and fix the corresponding upper half gear 601 or lower plate gear, which can in particular prevent the upper half gear 601 from falling out of the upper rotating cavity 203. When it is necessary to replace the gear, simply raise the telescopic rod of the lifting cylinder 3 to open the clamping seat 2, and then unlock the locking cylinder 9 to quickly remove the upper and lower rotating gears 6 from the rotating cavity.

[0059] In other embodiments, a locking pin can be used to lock the rotating gear 6, but it needs to be manually unlocked before each rotation.

[0060] Furthermore, each locking cylinder 9 is provided with two sets on the upper clamp seat 201 and the limit seat to facilitate two-point positioning and ensure the stability of locking.

[0061] In this embodiment, the lifting cylinder 3, locking cylinder 9, drive motor 11, and feed motor 703 are all connected to the controller and operate according to a fixed timing sequence. A start switch is provided on the frame 1 to start the timing sequence operation.

[0062] In this embodiment, in the initial state, such as Figure 3 The telescopic rod of the lifting cylinder 3 is in the highest position, the clamp seat 2 is opened to facilitate the placement of the workpiece to be cut; the cutting blade 401 is away from the workpiece; the telescopic rod of the locking cylinder 9 is in the limiting hole 12 to lock and fix the rotating gear 6. When the workpiece is correctly placed on the lower fixture 502, pressing the start button initiates the sequential operation. First, the extension rod of the lifting cylinder 3 gradually descends to its lowest position, closing the fixture seat 2 and assembling a ring-shaped rotating cavity, rotating gear 6, and fixture 5, which fixes the workpiece. After a short delay, the extension rod of the locking cylinder 9 extends out of the limiting hole 12 on the rotating gear 6 to unlock it. After another short delay, the drive motor 11 rotates, thereby driving the transmission gear 10, rotating gear 6, fixture 5, and workpiece to rotate. Simultaneously, the feed motor 703 operates, causing the cutting blade 401 to advance a specific distance, coordinating with the workpiece rotation to perform rotary cutting on the workpiece head. After the drive motor 11 rotates a specific number of times, it stops, and the rotating gear 6 returns to its initial angle. At the same time, the feed motor 703 reverses direction, causing the cutting blade 401 to retract to its initial position. Subsequently, the locking cylinder 9 locks the rotating gear 6. Finally, the extension rod of the lifting cylinder 3 rises back to its highest position, returning the device to its initial state.

Claims

1. A clamping and rotating mechanism for a car dust cover trimming device, characterized in that: It includes a clamp base, rotating gear, clamp, locking mechanism, transmission gear, and drive motor; The clamp seat, rotating gear, and clamp are all horizontally cut from the middle to form an upper clamp seat, a lower clamp seat, an upper half gear, a lower half gear, an upper clamp, and a lower clamp; The upper clamping seat has an upper rotating cavity with a lower opening, and the lower clamping seat has a lower rotating cavity with an upper opening. Both the upper clamping seat and the lower clamping seat are equipped with locking mechanisms. The upper and lower rotating cavities are joined together to form a ring-shaped rotating cavity; The upper half gear is rotatably disposed in the upper rotating cavity and locked by a locking mechanism. The upper half gear is coaxially and fixedly connected to the upper clamp. The lower half gear is rotatably disposed in the lower rotating cavity and locked by a locking mechanism; the lower half gear is coaxially and fixedly connected to the lower clamp. When the upper clamp seat and the lower clamp seat are assembled, the upper half gear and the lower half gear are assembled in the annular rotating cavity, so that the rotating gear can rotate in the annular rotating cavity after being unlocked, and the rotating gear is limited by the annular rotating cavity. The rotating gear is connected to the transmission gear, and the transmission gear is connected to the drive motor.

2. The clamping and rotating mechanism for a car dust cover trimming device according to claim 1, characterized in that: The locking mechanism includes a locking cylinder, and a locking cylinder is installed on both the upper clamping seat and the lower clamping seat; Limiting holes are provided in the upper clamping seat and the upper half gear, and in the lower clamping seat and the lower half gear. The telescopic rod of the locking cylinder passes through the limiting hole to lock and fix the corresponding upper or lower half gear.

3. The clamping and rotating mechanism for a car dust cover trimming device according to claim 2, characterized in that: Each of the locking cylinders has two sets on the upper clamp seat and the limit seat.

4. The clamping and rotating mechanism for a car dust cover trimming device according to claim 1, characterized in that: An opening is provided at the bottom of the lower rotating cavity, and the teeth of the rotating gear pass through the opening to the lower rotating cavity and are connected to the transmission gear.

5. The clamping and rotating mechanism for a car dust cover trimming device according to claim 1, characterized in that: The rotating gear is ring-shaped, and an mounting ring is fixedly connected to its inner circle; The fixture base has clearance holes that allow the mounting ring to rotate. The mounting ring is divided into an upper mounting ring and a lower mounting ring from the middle, and the upper mounting ring and the lower mounting ring are coaxially fixedly connected to the upper clamp and the lower clamp, respectively.

6. The clamping and rotating mechanism for a car dust cover trimming device according to claim 5, characterized in that: Both the upper and lower mounting rings are provided with threaded holes, which are symmetrically located on both sides of the rotating gear. The upper and lower clamps are respectively provided with countersunk holes, and a connector is inserted through the countersunk holes. The connector is threadedly connected to the threaded hole.

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