Box body surface burr polishing treatment device for female draw-bar box

By designing a box surface burr polishing treatment device for women's trolley boxes, the workbench tilt is controlled by using servo motors and sliders, and cleaning debris through the connecting rods and air outlets, grinding debris in the prior art is solved The problem of low cleaning efficiency has achieved an efficient debris cleaning and grinding process.

CN222493462UActive Publication Date: 2025-02-18ADIMANER LERTHER ARTICLE & DRESS DECORATION

Patent Information

Application Number
CN202421268980.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-04
Publication Date
2025-02-18
Estimated Expiration
2034-06-04

AI Technical Summary

Technical Problem

The existing trolley box surface burr polishing treatment device will produce a large amount of debris when polishing. Since the trolley box is mostly made of aluminum, the iron absorbing block cannot be adsorbed, resulting in manual cleaning, which consumes labor costs, and now There are technology that fails to effectively solve the cleaning problem of grinding chips.

Method used

A polishing treatment device including a workbench, a cleaning mechanism and a fixing mechanism is designed. The workbench tilt is controlled by a servo motor, threaded rod, slider and first slide rail, and the polished debris is blown into the collection bucket through the connecting rod, air outlet and barrier rod to reduce manual cleaning. Meanwhile, the electric push rod, the second slide rail and the support plate are used to clamp and rotate the trolley case for easy grinding and cleaning.

Benefits of technology

It effectively reduces the time and labor consumption of manual cleaning, improves the efficiency of debris cleaning, and facilitates the cleaning of the collection bucket, improving the overall polishing and polishing efficiency.

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Abstract

The utility model discloses a polishing treatment device for burrs on the surface of a box body of a female draw-bar box, and particularly relates to the field of draw-bar boxes. The cleaning mechanism comprises a connecting rod, an air outlet, a connecting pipe, a supporting table, a threaded rod, a first sliding rail, a sliding block, a connecting rod, a servo motor, a fixing ring, a hook, a collecting hopper and a blocking rod, and the connecting rod is fixedly connected to the edge of the top end of the workbench. Chippings generated after the surface of the workbench is ground are blown into a collecting hopper through a connecting rod, an air outlet and a stop lever, the collecting hopper can be conveniently replaced through a hook and a fixing ring, and therefore the chippings generated after the trolley case is ground and polished can be conveniently cleaned, the manual cleaning time is shortened, manpower consumption is reduced, and the cleaning efficiency is improved; and meanwhile, the collecting hopper is convenient to clean.
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Description

Technical Field

[0001] The utility model relates to the field of trolley cases, and more specifically to a device for polishing burrs on the surface of a trolley case for women. Background Art

[0002] A trolley case is a suitcase with a trolley and wheels. It is widely used because of its convenience. At the same time, a trolley case is also divided into a single-tube trolley case and a double-tube trolley case because the case has a trolley. The tube of the trolley case is also divided into a square tube and a round tube. It is convenient to drag when walking and greatly reduce the burden. In the production process of trolley cases, grinding and polishing devices are often required;

[0003] After searching, the existing patent (publication number: 202320638898.X) discloses a shell polishing device for a trolley case, which belongs to the technical field of trolley cases, including a body, a base is fixedly arranged in the middle of the body surface, a first motor is arranged inside the base, a turntable is fixedly connected to the output end of the first motor, a trolley case is placed on the surface of the turntable, and a first hydraulic rod is arranged above the turntable. The beneficial effect of the utility model is that the trolley case to be polished can be placed flat on the surface of the turntable, and the pressure plate arranged on the top can be moved downward and pressed on the surface of the trolley case by the drive of the first hydraulic rod, thereby improving the stability of its shell polishing, and the outer wall of the trolley case shell can be polished by the moving mechanism on the right, and the turntable can be rotated by the drive of the first motor, so that the trolley case changes its orientation, ensuring that the four surfaces of the shell can be polished, and the polishing equipment of the present application can perform comprehensive polishing on the trolley case, and the polishing efficiency is greatly improved.

[0004] The existing burr polishing device for the surface of the female luggage will generate a large amount of debris when polishing the luggage. Since most of the existing luggage is made of aluminum, the magnet cannot adsorb aluminum, and the aluminum debris is usually cleaned manually with a cleaning brush, which greatly consumes labor costs. At the same time, the above-cited patent document does not propose a relevant solution to solve the problem of cleaning the grinding debris.

[0005] Therefore, in view of the above problems, a device for polishing burrs on the surface of a suitcase for women is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a device for polishing burrs on the surface of a trolley case for women, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for polishing burrs on the surface of a trolley case for women, comprising a workbench, a cleaning mechanism is arranged on the top of the workbench, and the cleaning mechanism comprises a connecting rod, an air outlet, a connecting pipe, a supporting platform, a threaded rod, a first slide rail, a slider, a connecting rod, a servo motor, a fixing ring, a hook, a collecting bucket and a blocking rod;

[0008] The top edge of the workbench is fixedly connected to a connecting rod, the side wall of the connecting rod is fixedly connected to an air outlet, the side of the connecting rod away from the air outlet is fixedly connected to a connecting pipe, a support platform is screwed to one side of the workbench, a threaded rod passes through the interior of the support platform, a first slide rail is fixedly connected to the top of the inner wall of the support platform, a slider slidably connected to the first slide rail is threadedly connected to the outer side of the threaded rod, connecting rods connected to the bottom of the workbench through bearings are connected to the two sides of the slider through bearings, a servo motor is fixedly connected to one side of the threaded rod, fixing rings are fixedly connected to the two sides of the support platform, a hook passes through the interior of the fixing ring, a collecting bucket is fixedly connected to one side of the hook, and a blocking rod is fixedly connected to the top of the collecting bucket.

[0009] Preferably, a fixing mechanism is provided at the top of the workbench, and the fixing mechanism includes a second slide rail, a support plate, an electric push rod, a rotating rod, a rotating motor, a rotating plate, a screw, a movable block, a clamping plate, a sponge pad and a small motor.

[0010] Preferably, two sets of second slide rails are fixedly connected to the top of the workbench, the outer walls of the second slide rails are slidably connected to a support plate, one side of the support plate is fixedly connected to an electric push rod, a rotating rod passes through the interior of the support plate, one side of the rotating rod is fixedly connected to a rotating motor, an end of the rotating rod away from the rotating motor is fixedly connected to a rotating plate, a screw rod passes through the interior of the rotating plate, a movable block is threadedly connected to the outer wall of the screw rod, a splint is fixedly connected to the side wall of the movable block, the top of the splint is fixedly connected to a sponge pad, and the top of the screw rod is fixedly connected to a small motor.

[0011] Preferably, a support rod is fixedly connected to the top of the workbench and located on the side wall of the connecting rod, an electric hydraulic rod passes through the top of the support rod, the bottom end of the electric hydraulic rod is fixedly connected to a connecting plate, the top of the connecting plate is fixedly connected to a limiting rod passing through the inside of the support rod, the bottom end of the connecting plate is fixedly connected to a driving motor, and the bottom end of the driving motor is fixedly connected to a grinding disc.

[0012] Preferably, a bracket is fixedly connected to the bottom end of the support platform, and the bracket is in an "X" shape.

[0013] Preferably, the connecting rod has an inclined shape, a connecting hole connected to the connecting pipe and the air outlet is provided inside the connecting rod, and the top end of the blocking rod is higher than the top end of the workbench.

[0014] Preferably, the side wall of the rotating plate is provided with a sliding groove which fits with the outer wall of the movable block, and the screw rod is a positive and negative structure.

[0015] Preferably, the grinding disc is located directly above the workbench, and the support rod is in an L-shape.

[0016] Technical effects and advantages of the utility model:

[0017] 1. Compared with the prior art, the device controls the inclination of the workbench through a servo motor, a threaded rod, a slider, a first slide rail, and a connecting rod, blows the debris after grinding the surface of the workbench into the collection bucket through the connecting rod, the air outlet, and the baffle rod, and facilitates the replacement of the collection bucket through the hook and the fixing ring, thereby facilitating the cleaning of the debris after grinding and polishing the trolley case, reducing the time for manual cleaning, reducing the consumption of manpower, improving the cleaning efficiency, and facilitating the cleaning of the collection bucket.

[0018] 2. Compared with the prior art, the device clamps the trolley case horizontally through the electric push rod, the second slide rail and the support plate, and clamps the trolley case longitudinally through the small motor, the screw rod, the movable block, the clamping plate and the sponge pad to fix the trolley case, and controls the trolley case to rotate to the other side through the rotating motor, the rotating rod and the rotating plate. By controlling the spacing between the support plates and the spacing between the clamping plates, it is convenient to clamp and fix trolley cases of different sizes. At the same time, the trolley case can be turned over when clamped and fixed, which facilitates daily use and improves convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the cleaning mechanism of the utility model.

[0021] Figure 3 This is a schematic diagram of the fixing ring and hook structure of the utility model.

[0022] Figure 4 It is a schematic diagram of the fixing mechanism of the utility model.

[0023] Figure 5 Schematic diagram of the bracket and grinding disc of the utility model

[0024] The accompanying drawings are marked as follows: 1. workbench; 2. cleaning mechanism; 201. connecting rod; 202. air outlet; 203. connecting pipe; 204. support platform; 205. threaded rod; 206. first slide rail; 207. slider; 208. connecting rod; 209. servo motor; 210. fixing ring; 211. hook; 212. collecting bucket; 213. blocking rod; 3. fixing mechanism; 301. second slide rail; 302. support plate; 303. electric push rod; 304. rotating rod; 305. rotating motor; 306. rotating plate; 307. screw rod; 308. movable block; 309. splint; 310. sponge pad; 311. small motor; 4. support rod; 5. electric hydraulic rod; 6. connecting plate; 7. limit rod; 8. drive motor; 9. grinding disc; 10. bracket. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] As attached Figures 1 to 3 The device for polishing the surface burrs of a suitcase for women is shown, comprising a workbench 1, a cleaning mechanism 2 is arranged on the top of the workbench 1, and the cleaning mechanism 2 comprises a connecting rod 201, an air outlet 202, a connecting pipe 203, a support platform 204, a threaded rod 205, a first slide rail 206, a slider 207, a connecting rod 208, a servo motor 209, a fixing ring 210, a hook 211, a collecting bucket 212 and a blocking rod 213;

[0028] A connecting rod 201 is fixedly connected to the top edge of the workbench 1, an air outlet 202 is fixedly connected to the side wall of the connecting rod 201, a connecting pipe 203 is fixedly connected to the side of the connecting rod 201 away from the air outlet 202, a support platform 204 is screwed to one side of the workbench 1, a threaded rod 205 runs through the interior of the support platform 204, a first slide rail 206 is fixedly connected to the top of the inner wall of the support platform 204, a slider 207 slidably connected to the first slide rail 206 is threadedly connected to the outer side of the threaded rod 205, connecting rods 208 connected to the bottom of the workbench 1 through bearings are connected to both sides of the slider 207 through bearings, a servo motor 209 is fixedly connected to one side of the threaded rod 205, fixing rings 210 are fixedly connected to both sides of the support platform 204, a hook 211 runs through the interior of the fixing ring 210, a collecting bucket 212 is fixedly connected to one side of the hook 211, and a blocking rod 213 is fixedly connected to the top of the collecting bucket 212.

[0029] Wherein: the threaded rod 205 is driven to rotate by the servo motor 209, so that it pushes the slider 207 to move along the trajectory of the first slide rail 206, so that it drives the connecting rod 208 to swing, and then pushes one side of the workbench 1 to move upward, so that the workbench 1 is tilted, and the connecting pipe 203 is connected to the external fan, so that it blows air from the air outlet 202 to the surface of the workbench 1 through the connecting rod 201, and the debris after the surface of the workbench 1 is polished is blown into the collecting bucket 212, and the debris is blocked by setting the blocking rod 213 to prevent the debris from being blown out of the collecting bucket 212. When the collecting bucket 212 is full of debris, the collecting bucket 212 can be pulled upward to make its hook 211 disengage from the fixing ring 210. When the hook 211 is inserted into the fixing ring 210, the collecting bucket 212 can be fixed, thereby facilitating the cleaning of the debris after the trolley case is polished, reducing the time of manual cleaning, reducing the consumption of manpower, improving the efficiency of cleaning, and facilitating the cleaning of the collecting bucket 212.

[0030] Embodiment 2

[0031] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working methods. Figures 1 to 5As shown, see the following description for details: A fixing mechanism 3 is arranged at the top of the workbench 1, and the fixing mechanism 3 includes a second slide rail 301, a support plate 302, an electric push rod 303, a rotating rod 304, a rotating motor 305, a rotating plate 306, a screw rod 307, a movable block 308, a clamping plate 309, a sponge pad 310 and a small motor 311. Two sets of second slide rails 301 are fixedly connected to the top of the workbench 1, and the outer wall of the second slide rail 301 is slidably connected to the support plate 302, and one side of the support plate 302 is fixed The support plate 302 is connected with an electric push rod 303, a rotating rod 304 is passed through the interior of the support plate 302, a rotating motor 305 is fixedly connected to one side of the rotating rod 304, a rotating plate 306 is fixedly connected to the end of the rotating rod 304 away from the rotating motor 305, a screw rod 307 is passed through the interior of the rotating plate 306, a movable block 308 is threadedly connected to the outer wall of the screw rod 307, a clamping plate 309 is fixedly connected to the side wall of the movable block 308, a sponge pad 310 is fixedly connected to the top of the clamping plate 309, and a sponge pad 310 is fixedly connected to the top of the screw rod 307. A small motor 311 is fixedly connected; further, the trolley case is placed on the clamping plate 309 and the sponge pad 310, and the support plate 302 is moved along the track of the second slide rail 301 by the electric push rod 303 to clamp the trolley case horizontally, and then the small motor 311 drives the screw rod 307 to rotate. Since the screw rod 307 is a positive and negative structure, the rotation of the screw rod 307 can push the two sets of movable blocks 308 to move relatively along the slide groove on the side wall of the rotating plate 306, and the slide groove serves the purpose of limiting, thereby The two sets of clamping plates 309 and the sponge pad 310 are driven to move in the same direction, the suitcase is clamped longitudinally, and the suitcase is fixed. The rotating plate 306 is driven to rotate by the rotating motor 305 and the rotating rod 304, so that it pushes the clamped suitcase to rotate to the other side. By controlling the spacing between the support plates 302 and the spacing between the clamping plates 309, it is convenient to clamp and fix suitcases of different sizes. At the same time, the suitcase can be turned over when clamped and fixed, which is convenient for daily use and improves convenience.

[0032] As a preferred embodiment, a support rod 4 is fixedly connected to the top of the workbench 1 and the side wall of the connecting rod 201, an electric hydraulic rod 5 is passed through the top of the support rod 4, a connecting plate 6 is fixedly connected to the bottom end of the electric hydraulic rod 5, a limiting rod 7 passing through the inside of the support rod 4 is fixedly connected to the top of the connecting plate 6, a driving motor 8 is fixedly connected to the bottom end of the connecting plate 6, and a grinding disc 9 is fixedly connected to the bottom end of the driving motor 8; further, the connecting plate 6 is pushed downward by the electric hydraulic rod 5 and under the action of the limiting rod 7, so that the grinding disc 9 contacts the surface of the trolley case, and the grinding disc 9 is rotated by the driving motor 8, so that the surface burrs of the trolley case are polished and polished, thereby facilitating the polishing and polishing of the surface of the trolley case.

[0033] As a preferred embodiment, the bottom end of the support platform 204 is fixedly connected with a bracket 10, and the bracket 10 is in an "X" shape; further, the support platform 204 is supported by the bracket 10, and the stability of the bracket 10 is enhanced by setting the "X" shape.

[0034] As a preferred embodiment, the connecting rod 208 has an inclined shape, and a connecting hole connected to the connecting pipe 203 and the air outlet 202 is provided inside the connecting rod 201, and the top of the blocking rod 213 is higher than the top of the workbench 1; further, the rotation of the threaded rod 205 will push the slider 207 to move along the trajectory of the first slide rail 206, so that it drives the connecting rod 208 to swing, and then pushes one side of the workbench 1 to move upward, thereby facilitating the control of the inclination of the workbench 1, and through the connecting rod 201, the connecting pipe 203 is conveniently connected to the air outlet 202, and air is blown from the air outlet 202, and by providing the blocking rod 213, debris is blocked to prevent the debris from being blown out of the collecting bucket 212.

[0035] As a preferred embodiment, the side wall of the rotating plate 306 is provided with a sliding groove that fits with the outer wall of the movable block 308, and the screw rod 307 has a positive and negative structure; further, the two groups of movable blocks 308 can be pushed to move relative to each other along the sliding groove of the side wall of the rotating plate 306 through the rotation of the screw rod 307, and the sliding groove serves the purpose of limiting, thereby driving the two groups of splints 309 and sponge pads 310 to move in the same direction, thereby facilitating the control of the movement of the splints 309 and the sponge pads 310, and the sponge pads 310 prevent the splints 309 from direct contact with the trolley case, causing damage to the trolley case.

[0036] As a preferred embodiment, the grinding disc 9 is located directly above the workbench 1, and the support rod 4 is in an "L" shape; further, the grinding disc 9 is used to facilitate grinding of the trolley case, and the support rod 4 is used to facilitate supporting the grinding disc 9.

[0037] The working process of the utility model is as follows: when using the burr polishing treatment device for the surface of a trolley case for women, the trolley case needs to be placed on the clamping plate 309 and the sponge pad 310 first, and the support plate 302 is moved along the track of the second slide rail 301 by the electric push rod 303 to clamp the trolley case horizontally, and then the screw rod 307 is driven to rotate by the small motor 311. Since the screw rod 307 is a positive and negative structure, the rotation of the screw rod 307 can push the two sets of movable blocks 308 along the side wall of the rotating plate 306 The slide groove moves relative to each other, and the slide groove serves the purpose of limiting, thereby driving the two sets of clamping plates 309 and the sponge pad 310 to move in the same direction, clamping the trolley case longitudinally, fixing the trolley case, and then pushing the connecting plate 6 downward through the electric hydraulic rod 5 and the limit rod 7, so that the grinding disc 9 contacts the surface of the trolley case, and the grinding disc 9 is rotated by the driving motor 8 to grind and polish the surface burrs of the trolley case. After grinding one side, it is necessary to drive the rotating plate through the rotating motor 305 and the rotating rod 304 306 rotates, so that it pushes the clamped suitcase to rotate to the other side, thereby facilitating the surface polishing of the suitcase. After polishing, the suitcase is removed, and the threaded rod 205 is driven to rotate by the servo motor 209, so that it pushes the slider 207 to move along the track of the first slide rail 206, so that it drives the connecting rod 208 to swing, and then pushes one side of the workbench 1 to move upward, so that the workbench 1 is tilted, and the connecting pipe 203 is connected to the external fan, so that it is connected from the air outlet 201 through the connecting rod 201. 2, air is blown toward the surface of the workbench 1 to blow the debris after grinding the surface of the workbench 1 into the collecting bucket 212. The debris is blocked by setting a blocking rod 213 to prevent the debris from being blown out of the collecting bucket 212. When the collecting bucket 212 is full of debris, the collecting bucket 212 can be pulled upward to disengage the hook 211 from the fixing ring 210. When the hook 211 is inserted into the fixing ring 210, the collecting bucket 212 can be fixed. This is the working principle of the burr polishing treatment device for the surface of a trolley case for women.

[0038] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A device for polishing burrs on the surface of a trolley case for women, comprising a workbench (1), characterized in that: A cleaning mechanism (2) is provided at the top of the workbench (1), and the cleaning mechanism (2) comprises a connecting rod (201), an air outlet (202), a connecting pipe (203), a support platform (204), a threaded rod (205), a first slide rail (206), a slider (207), a connecting rod (208), a servo motor (209), a fixing ring (210), a hook (211), a collecting bucket (212) and a blocking rod (213); The top edge of the workbench (1) is fixedly connected to a connecting rod (201), the side wall of the connecting rod (201) is fixedly connected to an air outlet (202), the side of the connecting rod (201) away from the air outlet (202) is fixedly connected to a connecting pipe (203), a support platform (204) is screwed to one side of the workbench (1), a threaded rod (205) penetrates the interior of the support platform (204), a first slide rail (206) is fixedly connected to the top of the inner wall of the support platform (204), and the outer side of the threaded rod (205) is threadedly connected to the first slide rail. (206) A sliding block (207) is slidably connected, and both sides of the sliding block (207) are connected to connecting rods (208) connected to the bottom of the workbench (1) through bearings, and one side of the threaded rod (205) is fixedly connected to a servo motor (209), and both sides of the support platform (204) are fixedly connected to fixing rings (210), and a hook (211) passes through the interior of the fixing ring (210), and one side of the hook (211) is fixedly connected to a collecting bucket (212), and the top of the collecting bucket (212) is fixedly connected to a blocking rod (213).

2. The device for polishing burrs on the surface of a luggage case for women passengers according to claim 1, characterized in that: The top of the workbench (1) is provided with a fixing mechanism (3), and the fixing mechanism (3) comprises a second slide rail (301), a support plate (302), an electric push rod (303), a rotating rod (304), a rotating motor (305), a rotating plate (306), a screw rod (307), a movable block (308), a clamping plate (309), a sponge pad (310) and a small motor (311).

3. The device for polishing burrs on the surface of a luggage case for women passengers according to claim 2, characterized in that: The top of the workbench (1) is fixedly connected with two groups of second slide rails (301), the outer wall of the second slide rail (301) is slidably connected with a support plate (302), one side of the support plate (302) is fixedly connected with an electric push rod (303), the interior of the support plate (302) is penetrated by a rotating rod (304), one side of the rotating rod (304) is fixedly connected with a rotating motor (305), the end of the rotating rod (304) away from the rotating motor (305) is fixedly connected with a rotating plate (306), the interior of the rotating plate (306) is penetrated by a screw rod (307), the outer wall of the screw rod (307) is threadedly connected with a movable block (308), the side wall of the movable block (308) is fixedly connected with a clamping plate (309), the top of the clamping plate (309) is fixedly connected with a sponge pad (310), and the top of the screw rod (307) is fixedly connected with a small motor (311).

4. The device for polishing burrs on the surface of a luggage case for women passengers according to claim 1, characterized in that: A support rod (4) is fixedly connected to the top of the workbench (1) and located on the side wall of the connecting rod (201); an electric hydraulic rod (5) penetrates the top of the support rod (4); a connecting plate (6) is fixedly connected to the bottom of the electric hydraulic rod (5); a limiting rod (7) penetrating the inside of the support rod (4) is fixedly connected to the top of the connecting plate (6); a driving motor (8) is fixedly connected to the bottom of the driving motor (8); and a grinding disc (9) is fixedly connected to the bottom of the driving motor (8).

5. The device for polishing burrs on the surface of a luggage case for women passengers according to claim 1, characterized in that: The bottom end of the support platform (204) is fixedly connected to a bracket (10), and the bracket (10) is in an "X" shape.

6. The device for polishing burrs on the surface of a suitcase for women according to claim 1, characterized in that: The connecting rod (208) has an inclined shape, a connecting hole connected to the connecting pipe (203) and the air outlet (202) is provided inside the connecting rod (201), and the top end of the blocking rod (213) is higher than the top end of the workbench (1).

7. The device for polishing burrs on the surface of a suitcase for women according to claim 3, characterized in that: The side wall of the rotating plate (306) is provided with a sliding groove that fits with the outer wall of the movable block (308), and the screw rod (307) is a positive and negative structure.

8. The device for polishing burrs on the surface of a luggage case for women passengers according to claim 4, characterized in that: The grinding disc (9) is located directly above the workbench (1), and the support rod (4) is in the shape of an "L".

Citation Information

Patent Citations

  • Shell grinding equipment for draw-bar box

    CN220051204U

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