A hardware parts surface grinding equipment

Abstract

The present invention relates to the field of polishing technology, specifically to a hardware parts surface polishing equipment, including a base, a support seat, a polishing mechanism, an electric push rod, a mounting rod, a connecting seat, etc.; the top rear side of the base is connected to the support seat, the middle part of the support seat is provided with a polishing mechanism for polishing annular hardware parts, an electric push rod is installed on the top of the support seat, and the bottom end of the telescopic rod of the electric push rod is rotatably connected to the mounting rod. The mounting rod and its upper parts are driven up and down by the telescopic movement of the electric push rod, and the support plate can be moved to fix or loosen the annular hardware parts through the cooperation of the slotted sleeve, the push sleeve and the protruding block pull rod, and when the support plate moves outward and supports and fixes the annular hardware parts through the rubber plate, the force is uniform, which can enhance stability, so that the inside of the annular hardware parts will not be worn, and at the same time, the support force for the annular hardware parts is stable, ensuring comprehensive and uniform polishing.

Description

Technical Field

[0001] The invention relates to the technical field of polishing, in particular to a hardware parts surface polishing device. Background Art

[0002] Hardware parts, also called small hardware and hardware accessories, refer to machine parts or components made of hardware, as well as some small hardware products. Grinding of hardware parts is a key process step, which has an important impact on the final quality, appearance and performance of the parts. The main purpose of grinding hardware parts is to remove burrs, scales, stains and other impurities on the surface of parts, improve the surface finish and precision of parts, and enhance the corrosion resistance and aesthetics of parts.

[0003] The surface of the annular hardware parts is a curved structure. When grinding, uniform and appropriate force should be maintained to avoid deformation or damage of the parts due to excessive force. At present, the operator generally uses a rod-shaped tool to pass through the annular hardware parts, and then uses the rod-shaped tool to bring the annular hardware parts close to the grinding part of the grinder and apply a certain pressure. During the grinding process of the grinding part on the annular hardware parts, the annular hardware parts will also rotate with friction, thereby achieving the grinding of the outer curved surface. However, when the annular hardware parts rotate, there will be relative friction between them and the rod-shaped tool, resulting in wear of the inner wall of the annular hardware parts, and when pressure is applied to the rod-shaped tool, there is also the problem of uneven force, resulting in uneven surface grinding and affecting the surface quality of the parts. Summary of the invention

[0004] In order to overcome the shortcomings that rod-shaped tools easily cause wear to the inner wall of annular hardware parts, and that the pressure applied to the rod-shaped tools is uneven, resulting in uneven surface grinding and affecting the surface quality of the parts, the technical problem to be solved is: to provide a hardware parts surface grinding equipment that can stably support annular hardware parts, does not cause wear to the inner wall, and evenly grinds the outer surface.

[0005] The technical solution of the present invention is: a hardware parts surface grinding equipment, including a base, a support base, a grinding mechanism, an electric push rod, a mounting rod, a connecting seat, a sleeve, a control component, a connecting rod, a support plate and a rubber plate. The top rear side of the base is connected to the support base, and a grinding mechanism for grinding annular hardware parts is arranged in the middle of the support base. An electric push rod is installed on the top of the support base, and the bottom end of the telescopic rod of the electric push rod is rotatably connected to the mounting rod, and the mounting rod and the telescopic rod of the electric push rod have rotational friction, and a connecting seat is connected to the bottom of the mounting rod, and a sleeve is connected to the bottom of the connecting seat, and a control component is arranged in the sleeve, and another connecting seat is connected to the control component, and three connecting rods are rotatably connected to the two connecting seats, and the connecting rods on the two connecting seats are in corresponding positions, and a support plate is rotatably connected between the upper and lower corresponding connecting rods, and a rubber plate is connected to the outer side of the support plate, and the two connecting seats can be controlled to move by the control component, so that the support plate moves to fix and release the annular hardware parts.

[0006] As a preferred technical solution of the present invention, the control component includes a slotted sleeve, a push sleeve, a protrusion pull rod, a connecting sleeve, a rotating block and a compression spring. The rotating block is rotatably connected in the connecting seat. The slotted sleeve is connected to the lower part of the sleeve. A push sleeve is slidably arranged in the slotted sleeve. A protrusion pull rod is movably arranged in the push sleeve. The protrusion pull rod cooperates with the slotted sleeve and the push sleeve respectively. A compression spring is connected between the protrusion pull rod and the rotating block. A connecting sleeve is slidably connected to the middle part of the push sleeve. The top of the connecting sleeve is rotatably connected to the protrusion pull rod. The connecting seat is connected to the bottom of the connecting sleeve, and the push sleeve slides through this connecting seat.

[0007] As a preferred technical solution of the present invention, four sliding grooves are provided on the inner wall of the slotted sleeve, and four sliding blocks are integrally formed on the upper outer wall of the push sleeve, and the sliding blocks of the push sleeve are slidably matched with the sliding grooves of the slotted sleeve.

[0008] As a preferred technical solution of the present invention, four vertical grooves and four oblique grooves are evenly arranged on the upper part of the slotted sleeve, the vertical grooves and the oblique grooves are staggered, eight saw-shaped teeth are evenly arranged on the top of the push sleeve, and four inclined guide blocks are evenly arranged on the outer side of the upper part of the protrusion pull rod. The inclined guide blocks can slide into the vertical grooves of the slotted sleeve, and the bottom inclined surface of the inclined guide blocks contacts and cooperates with the oblique grooves on the slotted sleeve and the saw-shaped teeth on the top of the push sleeve.

[0009] As a preferred technical solution of the present invention, the grinding mechanism includes a mounting plate, a mounting seat, a roller, a sanding belt and a first motor. A mounting plate is arranged in the middle of the support seat, and mounting seats are connected to the left and right sides of the mounting plate. The roller is rotatably connected to the mounting seat, and a sanding belt is wound between the two rollers. The first motor is installed on the left mounting seat, and the output shaft of the first motor is connected to the roller on the left.

[0010] As a preferred technical solution of the present invention, it also includes a movable rod, a tension spring, a wedge-shaped push plate, an extrusion plate, a pushing rod and a pushing ring. Four movable rods are connected to the rear side of the mounting plate. The movable rod is slidably connected to the support seat. A tension spring is wound around the outer side of the movable rod. The two ends of the tension spring are respectively connected to the mounting plate and the support seat. A wedge-shaped push plate is connected to the middle part of the rear side of the mounting plate. An extrusion plate is slidably connected to the middle front side of the support seat. The extrusion plate is extruded and matched with the wedge-shaped push plate. A pushing rod is connected to the top of the extrusion plate. The telescopic rod of the electric push rod runs through the front part of the pushing rod. A pushing ring is connected to the telescopic rod of the electric push rod. The pushing ring is located below the pushing rod.

[0011] As a preferred technical solution of the present invention, it also includes a rotating seat, a second motor, a placement ring, a clamping block and a reset spring. The rotating seat is rotatably connected to the base, the second motor is installed in the base, the output shaft of the second motor is connected to the rotating seat, four placement rings are evenly spaced and connected to the rotating seat, four clamping blocks are slidably connected to the placement ring, and a reset spring is connected between the clamping block and the placement ring.

[0012] As a preferred technical solution of the present invention, it also includes a brush roller, and the middle part of the front side of the mounting plate is rotatably connected with the brush roller, and the brush roller contacts the rear side of the sanding belt.

[0013] Beneficial effects: 1. The installation rod and its upper parts are driven up and down by the telescopic movement of the electric push rod. Through the cooperation of the slotted sleeve, the push sleeve and the protruding block pull rod, the support plate can be moved to fix or loosen the annular hardware parts. When the support plate moves outward and supports and fixes the annular hardware parts through the rubber plate, the force is uniform and the stability can be enhanced. This will not cause wear to the inside of the annular hardware parts. At the same time, the supporting force of the annular hardware parts is stable, ensuring comprehensive and uniform grinding.

[0014] 2. When the electric push rod shortens and drives the annular hardware parts to move upward, it can simultaneously drive the push ring to move upward. After the push ring contacts the push rod, the extrusion plate can move upward to extrude the wedge-shaped push plate, thereby pushing the mounting plate forward, and then the abrasive belt moves forward to contact the annular hardware parts and grind the annular hardware parts. When the annular hardware parts move downward after being polished, the abrasive belt will move backward and reset to prevent the abrasive belt from affecting the movement of the annular hardware parts and improve the grinding quality.

[0015] 3. By cooperating with the electric push rod, after a ring-shaped hardware part is polished and placed back in the placement ring, the second motor drives the rotating seat to rotate 90 degrees intermittently, so that the next ring-shaped hardware part to be polished is moved directly under the electric push rod, thereby ensuring the continuity of polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the connection structure between the electric push rod and the mounting rod in the present invention.

[0018] Figure 3 It is a schematic diagram of the connection structure of the connecting seat, connecting rod and support plate in the present invention.

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the sleeve and the slotted sleeve in the present invention.

[0020] Figure 5 It is a schematic diagram of the dispersed structure of the slotted sleeve, the push sleeve, and the protrusion pull rod in the present invention.

[0021] Figure 6 It is a schematic diagram of the connection structure of the mounting rod, the connecting seat and the rotating block in the present invention.

[0022] Figure 7 It is a schematic diagram of the matching structure of the slotted sleeve and the protruding block pull rod in the present invention.

[0023] Figure 8 It is a schematic diagram of the matching structure of the push sleeve and the protrusion pull rod in the present invention.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the push sleeve in the present invention.

[0025] Fig.10 It is a schematic diagram of the connection structure of the projection pull rod and the connection sleeve in the present invention.

[0026] Fig.11 It is a schematic diagram of the matching structure of the wedge-shaped push plate and the extrusion plate in the present invention.

[0027] Fig.12 It is a schematic diagram of the connection structure of the extrusion plate and the push rod in the present invention.

[0028] Fig.13 It is a schematic diagram of the connection structure of the placement ring and the rotating seat in the present invention.

[0029] Fig.14 It is a schematic diagram of the connection structure of the placement ring, the clamping block and the return spring in the present invention.

[0030] Marked in the figure: 1-base, 2-support seat, 31-mounting plate, 32-mounting seat, 33-roller, 34-grinding belt, 35-first motor, 40-electric push rod, 41-mounting rod, 42-connecting seat, 43-sleeve, 44-slotted sleeve, 441-vertical groove, 442-oblique groove, 45-top push sleeve, 451-sawtooth, 46-bump pull rod, 461-inclined guide block, 47-connecting sleeve, 48-rotating block, 49-compression spring, 410-connecting rod, 411-support plate, 412-rubber plate, 51-movable rod, 52-tension spring, 53-wedge push plate, 54-extrusion plate, 55-push rod, 56-push ring, 61-rotating seat, 62-second motor, 63-placing ring, 64-block, 65-reset spring, 7-brush roller. DETAILED DESCRIPTION

[0031] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. Example

[0032] A hardware parts surface grinding equipment, such as Figure 1-10As shown, it includes a base 1, a support base 2, a grinding mechanism, an electric push rod 40, a mounting rod 41, a connecting base 42, a sleeve 43, a slotted sleeve 44, a push sleeve 45, a protruding block pull rod 46, a connecting sleeve 47, a rotating block 48, a compression spring 49, a connecting rod 410, a support plate 411 and a rubber plate 412. The top rear side of the base 1 is connected to the support base 2, and a grinding mechanism for grinding annular hardware parts is provided in the middle of the support base 2. The electric push rod 40 is installed on the top of the support base 2 by bolts, and the bottom end of the telescopic rod of the electric push rod 40 is rotated and connected A mounting rod 41 is connected, and the mounting rod 41 and the telescopic rod of the electric push rod 40 have rotational friction. The bottom of the mounting rod 41 is connected to a connecting seat 42, and the bottom of the connecting seat 42 is connected to a sleeve 43. The lower part of the sleeve 43 is connected to a slotted sleeve 44. A push sleeve 45 is slidably arranged in the slotted sleeve 44. Four slide grooves are arranged on the inner wall of the slotted sleeve 44. Four sliders are integrally formed on the upper outer wall of the push sleeve 45. The slider of the push sleeve 45 is slidably matched with the slide groove of the slotted sleeve 44. A protrusion pull rod 46 is movably arranged in the push sleeve 45. The slotted sleeve 44 is evenly provided with four vertical slots 441 and four oblique slots 442 on the upper part, the vertical slots 441 and the oblique slots 442 are staggered, the top of the push sleeve 45 is evenly spaced with eight saw-shaped teeth 451, and the outer side of the upper part of the protrusion pull rod 46 is evenly provided with four inclined guide blocks 461, the inclined guide blocks 461 can slide into the vertical slots 441 of the slotted sleeve 44, and the bottom inclined surfaces of the inclined guide blocks 461 are respectively in contact with the oblique slots 442 and the saw-shaped teeth 451, and the rotating block 48 is rotatably connected in the connecting seat 42, and the protrusion pull rod 46 is connected to the rotating block 48. A compression spring 49 is connected between the moving blocks 48, a connecting sleeve 47 is slidably connected to the middle of the push sleeve 45, the top of the connecting sleeve 47 is rotatably connected to the protruding block pull rod 46, the bottom of the connecting sleeve 47 is connected to another connecting seat 42, the push sleeve 45 slides through this connecting seat 42, and three connecting rods 410 are rotatably connected to the two connecting seats 42. The connecting rods 410 on the two connecting seats 42 are positioned correspondingly, and a support plate 411 is rotatably connected between the upper and lower corresponding connecting rods 410, and a rubber plate 412 is connected to the outer side of the support plate 411.

[0033] When the push sleeve 45 is squeezed and moved upward, the inclined guide block 461 can push the protruding block pull rod 46 to move upward, and the compression spring 49 is compressed. At this time, the bottom inclined surface of the inclined guide block 461 contacts the middle of the sawtooth 451. After the inclined guide block 461 is separated from the vertical groove 441, the sawtooth 451 of the push sleeve 45 pushes the inclined guide block 461 to rotate counterclockwise to a certain position (such as Figure 8As shown, in the initial state, the vertical projection of the inclined surface guide block 461 is located at the upper half of the inclined surface of the sawtooth 451, and the bottom of the inclined surface guide block 461 moves from the upper half of the sawtooth 451 to the lower half of the sawtooth 451. At this time, the inclined surface guide block 461 rotates half of the inclined surface position of the sawtooth 451, and after stopping squeezing the push sleeve 45, under the reset action of the compression spring 49, the protrusion pull rod 46 moves downward, so that the bottom of the inclined surface guide block 461 contacts the inclined groove 442, and as the protrusion pull rod 46 moves downward, the inclined surface guide block 461 rotates counterclockwise along the inclined groove 442. When the inclined surface guide block 461 slides to the bottom position of the inclined groove 442, the protrusion pull rod 46 stops moving. At this time, the slotted sleeve 44 limits the downward movement of the protrusion pull rod 46, and the movement of the protrusion pull rod 46 also drives the lower connecting seat 42 to move through the connecting sleeve 47. When 42 moves upward, the support plate 411 can be pushed outward by the connecting rod 410, so that the annular hardware parts are supported and fixed from the inside to the outside by the support plate 411. When the protrusion pull rod 46 is limited and moved downward by the slotted sleeve 44, the support plate 411 maintains the supporting state of the annular hardware parts; when the push sleeve 45 is squeezed and moved upward again, the protrusion pull rod 46 can be driven to move upward. When the inclined guide block 461 is disengaged from the inclined groove 442, the protrusion pull rod 46 and the inclined guide block 461 rotate counterclockwise by half of the inclined position of the sawtooth 451. After stopping squeezing the push sleeve 45, the compression spring 49 pushes the protrusion pull rod 46 to move downward. At this time, the inclined guide block 461 is guided to slide into the vertical groove 441, that is, the protrusion pull rod 46 and the connecting sleeve 47 can be moved downward and reset, so that the lower connecting seat 42 moves downward, and the support plate 411 moves inward to loosen the annular ring.

[0034] like Figure 1 , Figure 2 and Fig.11 As shown, the grinding mechanism includes a mounting plate 31, a mounting seat 32, a roller 33, a grinding belt 34 and a first motor 35. The middle part of the support seat 2 is provided with a mounting plate 31, and the left and right sides of the mounting plate 31 are connected with mounting seats 32. The roller 33 is rotatably connected to the mounting seat 32, and the grinding belt 34 is wound between the two rollers 33. The first motor 35 for driving the roller 33 to rotate is installed on the left mounting seat 32 by bolts, and the output shaft of the first motor 35 is connected to the roller 33 on the left; the first motor 35 is started to drive the roller 33 to rotate, thereby driving the grinding belt 34 to rotate, and the annular hardware parts are ground by the grinding belt 34.

[0035] like Fig.11 and Fig.12As shown, it also includes a movable rod 51, a tension spring 52, a wedge-shaped push plate 53, an extrusion plate 54, a push rod 55 and a push ring 56. Four movable rods 51 are connected to the rear side of the mounting plate 31. The movable rod 51 is slidably connected to the support seat 2. A tension spring 52 is wound around the outer side of the movable rod 51. The two ends of the tension spring 52 are respectively connected to the mounting plate 31 and the support seat 2. A wedge-shaped push plate 53 is connected to the middle part of the rear side of the mounting plate 31. A squeezing plate 54 is slidably connected to the front side of the middle part of the support seat 2. The squeezing plate 54 moves upward to squeeze the wedge-shaped push plate 53 to move forward. The top of the squeezing plate 54 is connected to the push rod 55. The telescopic rod of the electric push rod 40 runs through the front part of the push rod 55. The telescopic rod of the electric push rod 40 is connected to a push ring 56. The push ring 56 moves upward and contacts with the push rod 55 to push the push rod 55. When the telescopic rod of the electric push rod 40 is extended to clamp the annular hardware parts for material collection, the push ring 56 can be driven to move downward. After the material collection is completed, the telescopic rod of the electric push rod 40 is shortened to drive the push ring 56 to move upward. After the push ring 56 contacts the push rod 55, the push rod 55 can be synchronously driven to move upward, thereby driving the extrusion plate 54 to move upward. The extrusion plate 54 squeezes the wedge-shaped push plate 53 to move forward, thereby moving forward through the mounting plate 31 and its upper parts, the tension spring 52 is stretched, and the grinding belt 34 moves forward and contacts the annular hardware parts, thereby grinding the annular hardware parts through the grinding belt 34. When the telescopic rod of the electric push rod 40 drives the push ring 56 to move downward, the push rod 55 moves downward. Under the action of the tension spring 52, the mounting plate 31 drives its upper parts to move backward and reset.

[0036] like Figure 1 , Fig.13 and Fig.14 As shown, it also includes a rotating seat 61, a second motor 62, a placement ring 63, a clamping block 64 and a reset spring 65. The rotating seat 61 is rotatably connected to the base 1, and the second motor 62 is installed in the base 1 by bolts. The output shaft of the second motor 62 is connected to the rotating seat 61, and four placement rings 63 are evenly spaced and connected to the rotating seat 61. Four clamping blocks 64 are slidably connected to the placement ring 63, and a reset spring 65 is connected between the clamping block 64 and the placement ring 63; the annular hardware parts are placed in the placement ring 63, and the annular hardware parts squeeze the clamping block 64 to move outward, and the reset spring 65 is compressed. The annular hardware parts can be centered by the clamping block 64, so as to accurately pick up the annular hardware parts. After completing the grinding of an annular hardware part, the second motor 62 can intermittently drive the rotating seat 61 to rotate 90 degrees to move the next annular hardware part to be ground to be directly below the electric push rod 40.

[0037] like Figure 2As shown, a brush roller 7 is also included. The middle part of the front side of the mounting plate 31 is rotatably connected with the brush roller 7, and the brush roller 7 contacts the rear side of the sanding belt 34. When the sanding belt 34 rotates, the brush roller 7 can clean the debris generated by the sanding belt 34 during sanding.

[0038] Initially, the inclined guide block 461 is located in the vertical groove 441 of the slotted sleeve 44, and the three support plates 411 are in a retracted state; when in use, the annular hardware parts to be polished are placed in the placement ring 63, the clamping block 64 positions the annular hardware parts, the first motor 35 is started to drive the grinding belt 34 to rotate, the electric push rod 40 is started to extend, and the telescopic rod of the electric push rod 40 drives the push ring 56 and the mounting rod 41 and the upper parts thereof to move downward, and the downward movement of the mounting rod 41 can enable the support plate 411 to penetrate into the annular hardware parts directly below, and then the bottom of the push sleeve 45 is pushed. The part contacts with the rotating seat 61 and stops moving, and the push sleeve 45 abuts against the inclined guide block 461. As the installation rod 41 continues to move downward, the compression spring 49 is compressed, and the two connecting seats 42 approach each other, so that the connecting rod 410 pushes the support plate 411 to move outward, so that the rubber plate 412 abuts against the inner side of the annular hardware part, thereby supporting and fixing the annular hardware part from the inside to the outside, and the sleeve 43 drives the slotted sleeve 44 to continue to move downward, so that the inclined guide block 461 moves out of the vertical groove 441, and then the sawtooth 451 pushes the inclined guide block 461 to rotate counterclockwise;

[0039] The telescopic rod of the electric push rod 40 is controlled to shorten, thereby driving the push ring 56 and the installation rod 41 to move upward, thereby driving the annular hardware part to move upward and disengage from the placement ring 63, and under the action of the compression spring 49, the inclined guide block 461 enters the inclined groove 442 of the slotted sleeve 44, so that the protruding block pull rod 46 and the inclined guide block 461 move downward and rotate counterclockwise to a certain position, and the rubber plate 412 can be adaptively deformed after abutting against the inner side of the annular hardware part to adapt to the downward movement distance of the inclined guide block 461 in the inclined groove 442, that is, the two connecting seats 42 will be away from each other by a height distance of the inclined groove 442, and this moving distance will cause the support plate 411 to move inward. The rubber plate 412 moves, and the deformation of the rubber plate 412 can compensate for the moving distance, ensuring that the support block can still stably fix the annular hardware parts. Then, the protruding block pull rod 46 is limited by the slotted sleeve 44 through the cooperation of the inclined guide block 461 and the inclined groove 442 and cannot move further downward. At this time, the position of the connecting sleeve 47 and the connecting seat 42 below is also limited, that is, the distance between the two connecting seats 42 remains unchanged, so that the support plate 411 can stably fix the annular hardware parts. In this way, the annular hardware parts are stably supported and fixed from the inside to the outside by the three support plates 411, so as to facilitate the comprehensive and uniform grinding of the outer surface of the annular hardware parts without causing wear to the inner surface.

[0040] After the push ring 56 contacts the push rod 55, the extrusion plate 54 can be moved upward, thereby moving the wedge-shaped push plate 53 forward, so that the grinding belt 34 moves forward to contact the annular hardware parts and grinds them. During the grinding belt 34 grinding the annular hardware parts, the friction force can drive the annular hardware parts to rotate. Since there is a rotational friction between the mounting rod 41 and the telescopic rod of the electric push rod 40, the mounting rod 41 will not rotate too fast, so that the outer surface of the annular hardware parts can be fully and evenly polished.

[0041] After the grinding is completed, the electric push rod 40 is controlled to extend and the push ring 56 is moved downward, so that the mounting plate 31 moves backward and resets under the action of the tension spring 52, and the grinding belt 34 also moves backward accordingly. After the push sleeve 45 contacts the rotating seat 61, the push sleeve 45 and the protrusion pull rod 46 are moved upward relative to the slotted sleeve 44 again, and under the action of the sawtooth 451, the inclined surface guide block 461 is rotated counterclockwise for a certain distance, and then the electric push rod 40 is controlled to shorten, and under the action of the compression spring 49, the inclined surface guide block 461 slides into the slotted sleeve 44. In the vertical groove 441 of the groove sleeve 44, during this process, the two connecting seats 42 move away from each other, and the three support plates 411 move inward to loosen the annular parts, and then the second motor 62 is controlled to drive the rotating seat 61 to rotate 90 degrees, so that the next annular part that needs to be polished is moved to the bottom of the electric push rod 40, and the polished annular part is taken out from the placement ring 63 and a new annular part that needs to be polished is added, and then the electric push rod 40 is controlled to extend, and this reciprocating process can be used to continuously and evenly polish the surface of the annular hardware parts.

[0042] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A hardware parts surface grinding device, characterized by: The invention comprises a base (1), a support base (2) connected to the rear side of the top of the base (1), a grinding mechanism arranged in the middle of the support base (2) for grinding annular hardware parts, an electric push rod (40) installed on the top of the support base (2), a mounting rod (41) rotatably connected to the bottom end of the telescopic rod of the electric push rod (40), and a rotational friction force exists between the mounting rod (41) and the telescopic rod of the electric push rod (40), a connecting seat (42) connected to the bottom of the mounting rod (41), a sleeve (43) connected to the bottom of the connecting seat (42), a control component arranged in the sleeve (43), another connecting seat (42) connected to the control component, and a connecting rod (41) rotatably connected to the connecting seat (42). The connecting rod (410) comprises at least two connecting rods (410) on each connecting seat (42), the connecting rods (410) on the two connecting seats (42) are in corresponding positions, a support plate (411) connected between the upper and lower corresponding connecting rods (410) is rotatably connected, and a rubber plate (412) connected to the outer side of the support plate (411) can control the movement of the two connecting seats (42) through a control component, so that the support plate (411) moves to fix and loosen the annular hardware parts; the control component comprises a slotted sleeve (44), the slotted sleeve (44) connected to the lower part of the sleeve (43), a push sleeve (45) slidably arranged in the slotted sleeve (44), and a movable push sleeve (45) arranged in the push sleeve (45). 5), the protruding rod (46) in the inner part, the protruding rod (46) cooperates with the slotted sleeve (44) and the push sleeve (45) respectively, is rotatably connected to the rotating block (48) in the connecting seat (42), is connected between the protruding rod (46) and the rotating block (48), is slidably connected to the connecting sleeve (47) in the middle of the push sleeve (45), the top of the connecting sleeve (47) is rotatably connected to the protruding rod (46), is connected to another connecting seat (42) at the bottom of the connecting sleeve (47), and the push sleeve (45) slides through this connecting seat (42); the inner wall of the slotted sleeve (44) is provided with at least two slide grooves, and the upper outer wall of the push sleeve (45) is integrally formed with the same number of slide grooves The slider of the push sleeve (45) is slidably matched with the slide groove of the slotted sleeve (44); the upper part of the slotted sleeve (44) is evenly provided with four vertical grooves (441) and four oblique grooves (442); the vertical grooves (441) and the oblique grooves (442) are arranged alternately; the top of the push sleeve (45) is evenly provided with eight saw-shaped teeth (451); the outer side of the upper part of the protruding block pull rod (46) is evenly provided with four inclined guide blocks (461); the inclined guide blocks (461) can slide into the vertical grooves (441) of the slotted sleeve (44); the bottom inclined surface of the inclined guide block (461) contacts and matches with the oblique grooves (442) on the slotted sleeve (44) and the saw-shaped teeth (451) on the top of the push sleeve (45).

2. A hardware parts surface grinding device as claimed in claim 1, characterized in that: The grinding mechanism comprises a mounting plate (31), the mounting plate (31) being arranged in the middle of a support seat (2), mounting seats (32) connected to both sides of the mounting plate (31), a roller (33) rotatably connected to the mounting seats (32), a grinding belt (34) wound between the two rollers (33), and a first motor (35) mounted on one side of the mounting seats (32), wherein an output shaft of the first motor (35) is connected to a roller (33) adjacent thereto.

3. A hardware parts surface grinding device as claimed in claim 2, characterized in that: The invention also comprises a movable rod (51), the movable rod (51) connected to the mounting plate (31), at least two movable rods (51), the movable rod (51) being slidably connected to the support seat (2), a tension spring (52) wound around the outer side of the movable rod (51), the two ends of the tension spring (52) being respectively connected to the mounting plate (31) and the support seat (2), a wedge-shaped push plate (53) connected to the mounting plate (31), an extrusion plate (54) on the support seat (2) being slidably connected, the extrusion plate (54) being extrusion-matched with the wedge-shaped push plate (53), a push rod (55) connected to the top of the extrusion plate (54), a telescopic rod of the electric push rod (40) penetrating the push rod (55), and a push ring (56) connected to the telescopic rod of the electric push rod (40), the push ring (56) being located below the push rod (55).

4. A hardware parts surface grinding device as claimed in claim 3, characterized in that: The invention also includes a rotating seat (61), the rotating seat (61) rotatably connected to the base (1), a second motor (62) installed in the base (1), the output shaft of the second motor (62) connected to the rotating seat (61), a placement ring (63) connected to the rotating seat (61) at even intervals, the placement ring (63) having at least three members, a clamping block (64) slidably connected to the placement ring (63), the clamping block (64) having at least three members, and a return spring (65) connected between the clamping block (64) and the placement ring (63).

5. A hardware parts surface grinding device as claimed in claim 4, characterized in that: It also includes a brush roller (7) which is rotatably connected to the middle portion of the front side of the mounting plate (31), and the brush roller (7) is in contact with the sanding belt (34).

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