Novel adjustable paint stripping device

Abstract

The utility model discloses a novel adjustable paint stripping device which comprises a body and cutter rods distributed on the periphery of the body. The body comprises a connecting rod and a lantern ring, a bearing is assembled on the lantern ring, and an inner ring of the bearing is matched with the cutter rod in a sliding mode. A limiting part capable of limiting the sliding fit between the cutter rod and the bearing outer ring is arranged on the cutter rod; a closing mechanism is arranged at the top end of the cutter rod and can drive the cutter rod to rotate to close the blade; the cutter rod can rotate in the circumferential direction of the cutter rod through cooperation of the bearing outer ring, the bearing inner ring and the bearing balls and can also slide in the axial direction of the cutter rod through sliding cooperation of the cutter rod and the bearing inner ring, and height adjustment of the cutter rod and the blade is achieved. A user can adjust the paint stripping depth and position according to specific requirements; the equipment can meet various requirements for paint stripping depth and height as much as possible, meanwhile, paint stripping residues are not likely to be left at the root of a workpiece, and the paint stripping effect and the paint stripping quality are improved.

Description

Technical Field

[0001] The utility model relates to the field of manufacturing design of industrial production equipment, and more particularly to a novel adjustable paint stripping device. Background Art

[0002] Coil winding is a crucial step in the production of electrical components such as ignition coils, motor rotors, or stators. These coils are typically carefully wound from enameled copper wire, and their wire ends are subsequently soldered to ensure reliable electrical connections. However, the insulation layer on the wire ends must be removed before soldering to allow the solder to penetrate and form a strong bond with the copper wire.

[0003] Traditionally, this paint stripping step relies on manual labor, using blades to scrape away the insulation. This method is not only inefficient and difficult to adapt to large-scale production, but also often results in uneven stripping, increasing the difficulty and defect rate of subsequent processing. Furthermore, manual labor poses safety risks and potential health risks to operators.

[0004] In order to overcome the various disadvantages of traditional manual paint stripping, automated or semi-automated paint stripping devices have gradually appeared on the market; among them, the Chinese utility model patent application number CN201320562201.1 provides an adjustable paint stripping device; this device significantly improves the paint stripping efficiency, reduces labor costs, and improves the uniformity of paint stripping to a certain extent through mechanization.

[0005] Although the above-mentioned paint stripping device has made certain technological progress, it still has some limitations; specifically, the design of the device fails to fully consider the flexibility of the paint stripping depth and paint stripping position; its fixed working height limits the depth adjustment range of the paint stripping, so that the paint stripping depth requirements may not be met in certain specific scenarios; in addition, the blade direction in the device is designed to be tilted upward. This layout may make it difficult for the blade to reach the insulating layer at the root of the workpiece during the paint stripping process, thereby leaving paint stripping residue; this not only increases the subsequent cleaning workload, but may also affect the overall performance and appearance quality of the workpiece due to incomplete paint stripping. Utility Model Content

[0006] The utility model overcomes the deficiencies of the prior art and provides a novel adjustable paint stripping device with a simple structure, reasonable design, adjustable paint stripping height, clean paint stripping, better paint stripping effect, and little paint residue left at the root of the workpiece.

[0007] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0008] A novel adjustable paint stripping device comprises a main body connected to a driving device and a knife rod distributed around the periphery of the main body, wherein the bottom end of the knife rod is equipped with a blade; the main body comprises a connecting rod and a collar, the collar is equipped with a bearing, the outer ring of the bearing is fixedly connected to the collar, and the inner ring of the bearing is slidably engaged with the knife rod; the knife rod is provided with a limiting portion that can limit the sliding engagement between the knife rod and the outer ring of the bearing; the top end of the knife rod is provided with a closing mechanism, the closing mechanism is assembled on the main body, and rotates relative to the main body within a certain range, thereby driving the knife rod to rotate and close the blade; the number of the knife rods is two or more, and each group of knife rods can individually rotatably and slidably engage with the corresponding bearing.

[0009] Furthermore, the knife rod is columnar, and its dimensions at all points in the axial direction are consistent; a first matching portion arranged along its axial direction is provided on the outer surface of at least one side of the knife rod; the inner ring of the bearing is provided with a first matching space matching the knife rod, and a second matching portion matching the first matching portion is provided in the first matching space.

[0010] Furthermore, the knife rod is cylindrical, and the first mating portion includes a mating groove arranged along the axial direction of the knife rod; the second mating portion includes a mating block fixed in the first mating space, the mating block is in the mating groove, and the shape of the mating block corresponds to the shape of the cross-section of the mating groove; there is a gap between the mating block and the inner wall of the mating groove and between the knife rod and the inner wall of the first mating space for sliding fit between the knife rod and the inner ring of the bearing.

[0011] Furthermore, the limiting part includes a limiting block, the diameter of which is larger than the inner diameter of the first matching space; a mounting hole is provided in the limiting block, which passes through its upper and lower surfaces, and the shape of the mounting hole matches the knife rod, and the limiting block is movably mounted on the knife rod through the mounting hole; a limiting hole is also provided on the limiting block, and the two ends of the limiting hole are respectively a limiting entrance and a limiting exit, the limiting hole is connected to the mounting hole through the limiting exit, and the limiting entrance is provided on the outer surface of the limiting block; the limiting part also includes a limiting rod that is detachably matched with the limiting hole, and the limiting rod abuts against the knife rod in the mounting hole to fix the limiting block on the knife rod.

[0012] Furthermore, the ring includes an upper ring and a lower ring; the upper ring and the lower ring are both provided with an assembly space passing through their upper and lower surfaces for assembling bearings; the limit block is located between the upper ring and the lower ring, and a contact portion is provided at the end of the limit block. When the limit block is fixed on the knife rod, only the contact portion abuts against the inner ring of the bearing.

[0013] Furthermore, the assembly space includes an upper assembly space arranged on the upper ring and a lower assembly space arranged on the lower ring; the knife rod is arranged at an angle, with its bottom end facing the central axis of the connecting rod; the upper assembly space and the lower assembly space are both arranged in a circular shape on the upper ring and the lower ring; the diameter of the circle enclosed by the upper assembly space is larger than the diameter of the circle enclosed by the lower assembly space.

[0014] Furthermore, the closing mechanism includes a linkage plate, a linkage rod and a counterweight; the top end of the knife rod is exposed from above the upper ring and the bearing in the upper assembly space; the counterweight is provided with a second matching space that passes through its upper and lower surfaces, and the exposed area of ​​the top end of the knife rod is slidably matched with the second matching space, and an adjustment block is provided in the second matching space, and the adjustment block is fixed in the matching groove, and the shape of the adjustment block corresponds to the shape of the cross-section of the matching groove; there is a gap between the adjustment block and the inner wall of the matching groove and between the knife rod and the inner wall of the second matching space for sliding fit between the knife rod and the counterweight; the linkage rod is vertically arranged, and It is fixedly connected to the counterweight block; both ends of the linkage rod are exposed from the upper and lower surfaces of the counterweight block; the linkage piece is rotatably mounted on the connecting rod, and a sliding groove is provided on the linkage piece, and the top end of the linkage rod is in the sliding groove; a clamping groove is provided on the upper collar, and the bottom end of the linkage rod is in the clamping groove; the length direction of the clamping groove corresponds to the circumferential setting of the upper collar and the connecting rod, and the linkage rod can reciprocate around the upper collar and the connecting rod along the length direction of the clamping groove; the connecting rod is detachably equipped with an adjusting flange, and an adjusting torsion spring is sleeved on the connecting rod; the two ends of the adjusting torsion spring are respectively connected to the adjusting flange and the linkage piece.

[0015] Furthermore, an adjusting screw is provided on the upper collar, and the adjusting screw and the upper collar are threadedly matched to be adjustable and extend into the slot; when the closing mechanism and the body rotate relative to each other to drive the knife rod to rotate and close the blade, the bottom end of the linkage rod moves toward one end of the slot, and the adjusting screw extends into the slot from the direction of this end.

[0016] Furthermore, the bottom end of the knife rod is exposed from below the lower ring and the bearing in the lower assembly space; a blade mounting block is provided at the bottom end of the knife rod, and the blade is detachably assembled on the blade mounting block; the size of the blade mounting block is larger than the inner diameter of the lower assembly space.

[0017] Furthermore, the blade includes a mounting portion and a blade; the mounting portion and the blade mounting block are detachably matched through screws and screw holes; a downwardly extending blade connecting portion is provided on the mounting portion, the blade is provided at the bottom of the blade connecting portion, and the blade is arranged at an angle.

[0018] Beneficial effects:

[0019] In the present invention, the knife rod and the blade are height-adjustable by slidingly cooperating with the inner ring of the bearing, so that the user can adjust the depth and position of the paint stripping according to specific needs; thereby, the device can meet various requirements on the depth and height of paint stripping as much as possible, and at the same time, it is not easy to leave paint residue at the root of the workpiece, further improving the paint stripping effect and quality.

[0020] In the present invention, the independent control of multiple groups of knife rods enables each knife rod to adjust its paint stripping height individually according to specific needs; firstly, paint stripping can be performed at different heights of the same workpiece at the same time, thereby improving the paint stripping efficiency; secondly, paint stripping at different angles and depths can be performed at different heights of the workpiece according to some special needs.

[0021] In the present invention, the dimensions of the knife rod at various locations in the axial direction are consistent, so that the knife rod can slide in a more stable state.

[0022] In the present invention, it is necessary to satisfy the sliding fit between the knife rod and the inner ring of the bearing. Therefore, it is necessary to set a gap between the knife rod and the inner wall of the first matching space that is sufficient for the sliding fit. The setting of this gap may cause the knife rod to slip between the inner ring of the bearing when rotating, resulting in unstable rotation speed of the knife rod, which may cause uneven paint stripping, aggravated bearing wear and damage to the knife rod; and then the stability of the knife rod during rotation is ensured by the cooperation between the first matching part and the second matching part.

[0023] In the present invention, by setting and cooperating the matching groove and the matching block, the cooperation between the knife rod and the inner ring of the bearing is more stable when rotating, which helps to reduce processing errors and improve the uniformity and quality of paint stripping.

[0024] In the present invention, the limit block can be fixed on the knife rod through the combination of the limit block and the limit rod. At the same time, the height of the limit block is limited by the difference between the diameter of the limit block and the inner diameter of the first matching space, thereby realizing the limitation after the height adjustment of the knife rod and the blade; thereby, the stability of the knife rod during the paint stripping process can be enhanced.

[0025] In the present invention, the design of the upper and lower rings makes the assembly of the knife rod more secure and stable; at the same time, the limit block is located between the upper and lower rings, which facilitates its rapid adjustment and is not easy to fall off during the adjustment process, affecting the adjustment efficiency; and the limit block has only the contact portion abutting the inner ring of the bearing, so that the limit block can only limit the sliding of the knife rod, avoiding contact between the limit block and other positions, friction causing wear or affecting the rotation of the knife rod.

[0026] In the present invention, the inclined setting of the knife rod helps to improve the force conditions during the paint stripping process, so that the inclined transmission of the paint stripping force can be transmitted to the workpiece more smoothly, and it is also convenient for the blade to cut in; at the same time, due to the inclined setting of the knife rod, when the knife rod is adjusted in height, the position of the blade can be adjusted at the same time, so that it is close to or away from the position of the workpiece, thereby changing the depth of the paint stripping.

[0027] In the present invention, through the sliding cooperation between the knife rod and the second cooperation space, the device realizes the sliding cooperation between the inner ring of the bearing and the knife rod on the basis of driving the knife rod to rotate when the closing mechanism rotates relative to the main body to close the blade; at the same time, the setting of the adjustment block and the cooperation groove not only makes the sliding cooperation between the knife rod and the second cooperation space more stable, but also makes it difficult for the knife rod and the counterweight block to slip when the rotation force of the closing mechanism is transmitted to the knife rod, and the force for the rotation of the knife rod can be stably transmitted.

[0028] In the present invention, the main body is connected to the driving device, and the driving device drives the main body to rotate; and during the rotation of the main body, the linkage rod and the counterweight block do not rotate with the main body due to the action of their own gravity and inertia, and then form relative rotation with the main body, thereby driving the knife rod to rotate and close the blade. At the same time, the linkage piece rotates under the drive of the linkage rod, and the driving device continues to drive the main body to rotate to realize the paint stripping process; at this time, the amplitude of the relative rotation of the linkage rod and the counterweight block is the degree of blade closure. The greater the amplitude of rotation of the linkage rod and the counterweight block, the tighter the blade closure and the deeper the paint stripping.

[0029] In the present invention, by setting and coordinating the adjusting flange, adjusting torsion spring and linkage plate, after the main body stops rotating, the adjusting torsion spring drives the linkage plate to reset through its own torque, and then also drives the linkage rod and the counterweight block to reset, and the knife rod to rotate, so that the blade opens and resets.

[0030] In the present invention, the torque of the torsion spring can be adjusted by adjusting the flange, thereby changing the blade closing force, and the blade closing force is also the paint stripping force; at the same time, when the torque of the torsion spring is changed, the force supporting the blade to open and reset is also changed.

[0031] In the present invention, the length of the card slot is set to limit the relative rotation between the linkage rod and the counterweight block and the body, thereby limiting the degree of self-rotation of the knife rod and the closing of the blade to avoid the blade closing too tightly and damaging the workpiece.

[0032] In the present invention, the adjusting screw can accurately and stably extend into or out of the slot by means of threaded engagement, thereby achieving fine-tuning of the degree of blade closure to achieve paint stripping work at different depths, while also preventing the blade from closing too tightly and damaging the workpiece.

[0033] In the present invention, the blade can be detachably mounted on the blade mounting block, making the replacement of the blade very simple and quick; at the same time, the size of the blade mounting block is larger than the inner diameter of the lower assembly space, so that when the knife rod is adjusted to a high height, it can be avoided that the blade cannot be stripped due to being adjusted too high.

[0034] In the present invention, the inclined blade can cut into the paint layer more smoothly during the paint stripping process, reducing cutting resistance, helping to strip the paint layer more thoroughly and reducing residue; and the setting of the blade connection part enables the blade to reach the root of the workpiece and strip the paint at its root, so as to improve the paint stripping effect and quality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural diagram of the entire utility model.

[0036] Figure 2 for Figure 1 sectional view.

[0037] Figure 3 This is a structural diagram of the body and bearing.

[0038] Figure 4 This is a structural diagram of the bottom end of the knife rod.

[0039] Figure 5 for Figure 4 sectional view.

[0040] Figure 6 This is a structural diagram of the bearing.

[0041] Figure 7 It is a cross-sectional view of the limiting part.

[0042] Figure 8 This is the structural diagram of the linkage piece.

[0043] Figure 9 This is a structural diagram of the linkage rod and counterweight.

[0044] Numbers in the figure:

[0045] 1. Main body; 2. Knife rod; 3. Blade; 4. Bearing; 5. Limiting part; 6. Closing mechanism; 7. Adjusting flange; 8. Adjusting torsion spring; 9. Workpiece; 11. Connecting rod; 12. Collar; 13. Through hole; 14. Upper collar; 15. Lower collar; 16. Slot; 17. Adjusting screw; 21. First matching part; 22. Matching groove; 23. Blade mounting block; 31. Mounting part; 32. Blade; 33. Blade connecting part; 41. Bearing outer ring; 42. Bearing inner ring; 43. Bearing ball; 44. First matching space; 45. Second matching part; 46. Matching block; 51. Limiting block; 52. Mounting hole; 53. Limiting hole; 54. Limiting rod; 55. Contact part; 61. Linking plate; 62. Linking rod; 63. Counterweight block; 64. Sliding groove; 65. Second matching space; 66. Adjusting block. DETAILED DESCRIPTION

[0046] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments are merely a specific description of the present invention, and their purpose is to allow those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limiting the present invention.

[0047] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0048] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0049] Example:

[0050] like Figure 1-9As shown, a novel adjustable paint stripping device includes a main body 1 connected to a driving device and a knife rod 2 distributed around the outer periphery of the main body 1, with a blade 3 installed at the bottom end of the knife rod 2; the main body 1 includes a connecting rod 11 and a collar 12, the collar 12 is equipped with a bearing 4, the outer ring 41 of the bearing is fixedly connected to the collar 12, and the inner ring 42 of the bearing is slidably fitted with the knife rod 2; a limiting portion 5 is provided on the knife rod 2 to limit the sliding fit between the knife rod 2 and the outer ring 41 of the bearing; a closing mechanism 6 is provided at the top of the knife rod 2, the closing mechanism 6 is mounted on the main body 1, and rotates relative to the main body 1 within a certain range, thereby driving the knife rod 2 The self-rotation closes the blade 3; after the inner ring 42 of the bearing is matched with the knife rod 2, the knife rod 2 can rotate along its own circumference through the cooperation between the outer ring 41 of the bearing, the inner ring 42 of the bearing and the bearing ball 43, and can also slide along its own axial direction through the sliding cooperation between itself and the inner ring 42 of the bearing, thereby realizing the height adjustment of the knife rod 2 and the blade 3; allowing the user to adjust the depth and position of the paint stripping according to specific needs; thereby making the device able to meet various requirements on the depth and height of paint stripping as much as possible, and at the same time it is not easy to leave paint stripping residues at the root of the workpiece 9, further improving the paint stripping effect and the quality of the paint stripping.

[0051] In this embodiment, the connecting rod 11 is provided with through holes 13 passing through the upper and lower ends thereof, for the workpiece 9 that needs to undergo a paint stripping process or the workpiece 9 that has completed the paint stripping process to pass through.

[0052] In the present invention, the number of the knife rods 2 is two or more, and each group of knife rods 2 can be independently rotatably and slidably matched with the corresponding bearing 4; the independent control of multiple groups of knife rods 2 enables each knife rod 2 to individually adjust its paint stripping height according to specific needs; first, paint stripping can be performed at different heights of the same workpiece 9 at the same time, thereby improving the paint stripping efficiency; secondly, paint stripping at different angles and depths can be performed at different heights of the workpiece 9 according to some special needs.

[0053] In the present invention, the knife rod 2 is cylindrical, and its dimensions at various points in the axial direction are consistent, so that the knife rod 2 can slide in a more stable state; a first matching portion 21 arranged along its axial direction is provided on the outer surface of at least one side of the knife rod 2; the inner ring of the bearing 4 is provided with a first matching space 44 matching with the knife rod 2, and a second matching portion 45 matching with the first matching portion 21 is provided in the first matching space 44; it is necessary to meet the sliding fit between the knife rod 2 and the inner ring 42 of the bearing, so it is necessary to set a gap between the knife rod 2 and the inner wall of the first matching space 44 for their sliding fit, and the setting of this gap may cause the knife rod 2 to slip between the inner ring 42 of the bearing when rotating, resulting in unstable rotation speed of the knife rod 2, which may cause uneven paint stripping, aggravated wear of the bearing 4 and damage to the knife rod 2; and then the stability of the knife rod 2 during rotation is ensured by the fit between the first matching portion 21 and the second matching portion 45.

[0054] In this embodiment, the knife rod 2 is cylindrical, and the first matching portion 21 includes a matching groove 22 arranged along the axial direction of the knife rod 2, and the matching groove 22 is arranged on one side of the outer surface of the knife rod 2; the second matching portion 45 includes a matching block 46 fixed in the first matching space 44, the matching block 46 is in the matching groove 22, and the shape of the matching block 46 corresponds to the shape of the cross-section of the matching groove 22; there is a gap between the matching block 46 and the inner wall of the matching groove 22 and between the knife rod 2 and the inner wall of the first matching space 44 for sliding fit between the knife rod 2 and the inner ring of the bearing 4; through the setting and fit of the matching groove 22 and the matching block 46, the fit between the knife rod 2 and the inner ring 42 of the bearing is more stable when rotating, which helps to reduce processing errors and improve the uniformity and quality of paint stripping.

[0055] In the present invention, the limiting portion 5 includes a limiting block 51, the diameter of the limiting block 51 is larger than the inner diameter of the first matching space 44; the limiting block 51 is provided with a mounting hole 52 that passes through its upper and lower surfaces, the shape of the mounting hole 52 matches the knife rod 2, and the limiting block 51 is movably sleeved on the knife rod 2 through the mounting hole 52; the limiting block 51 is also provided with a limiting hole 53, the two ends of the limiting hole 53 are respectively a limiting entrance and a limiting exit, the limiting hole 53 is communicated with the mounting hole 52 through the limiting exit, and the limiting entrance is provided on the outer surface of the limiting block 51; the limiting portion 5 also includes a detachable matching with the limiting hole 53 The limiting rod 54; in this embodiment, the limiting rod 54 and the limiting hole 53 are detachably matched through threads, and enters the limiting hole 53 through the limiting entrance, and extends into the mounting hole 52 through the limiting exit to abut against the knife rod 2 in the mounting hole 52, thereby fixing the limiting block 51 on the knife rod 2; through the combination of the limiting block 51 and the limiting rod 54, the limiting block 51 can be fixed on the knife rod 2, and at the same time, the height of the limiting block 51 is limited by the difference between the diameter of the limiting block 51 and the inner diameter of the first matching space 44, thereby realizing the limitation of the knife rod 2 and the blade 3 after the height adjustment; thereby, the stability of the knife rod 2 during the paint stripping process can be enhanced.

[0056] In the present invention, the ring 12 includes an upper ring 14 and a lower ring 15; the upper ring 14 and the lower ring 15 are both provided with an assembly space passing through the upper and lower surfaces thereof for assembling the bearing 4; the design of the upper ring 14 and the lower ring 15 makes the assembly of the knife rod 2 more firm and stable.

[0057] In the present invention, the limit block 51 is located between the upper ring 14 and the lower ring 15, so that it can be adjusted quickly and is not easy to fall off during the adjustment process to affect the adjustment efficiency; a contact portion 55 is provided at the end of the limit block 51. When the limit block 51 is fixed on the knife rod 2, only the contact portion 55 abuts against the inner ring of the bearing 42, so that the limit block 51 can only limit the sliding of the knife rod 2, avoiding the limit block 51 from contacting other positions, friction causing wear or affecting the rotation of the knife rod 2.

[0058] In this embodiment, the number of upper limit blocks 51 on each knife rod 2 is two, the contact portion 55 of the upper limit block 51 is set at its top, and its contact portion 55 abuts against the bearing inner ring 42 fixed on the upper ring 14; the contact portion 55 of the lower limit block 51 is set at its bottom, and its contact portion 55 abuts against the bearing inner ring 42 fixed on the lower ring 15; through the double limit design of the two limit blocks 51, the stability of the knife rod 2 during operation is greatly enhanced, and the knife rod 2 is avoided as much as possible from moving up and down when the blade 3 is subjected to the reaction force during the paint stripping process, so that the paint stripping process is more stable and the paint stripping effect is better.

[0059] In the present invention, the assembly space includes an upper assembly space arranged on the upper ring 14 and a lower assembly space arranged on the lower ring 15; the knife rod 2 is tilted, and its bottom end faces the central axis of the connecting rod 11; the upper assembly space and the lower assembly space are both circularly distributed on the upper ring 14 and the lower ring 15; the diameter of the circle enclosed by the upper assembly space is larger than the diameter of the circle enclosed by the lower assembly space; the knife rod 2 is tilted, which helps to improve the force situation during the paint stripping process, so that the inclined transmission of the paint stripping force can be more smoothly transmitted to the workpiece 9, and it is also convenient for the blade 3 to cut in; at the same time, due to the tilted setting of the knife rod 2, when the knife rod 2 is adjusted in height, the position of the blade 3 can be adjusted at the same time, so that it is close to or away from the position of the workpiece 9, thereby changing the depth of the paint stripping.

[0060] In the present invention, the device can not only drive the knife rod 2 to rotate through the closing mechanism 6 to close the blade 3 to change the paint stripping depth of the blade 3, but also change the paint stripping depth of the blade 3 by adjusting the knife rod 2 up and down, so that the device can more accurately control the paint stripping angle and depth to achieve a better paint stripping effect.

[0061] In the present invention, the closing mechanism 6 includes a linkage piece 61, a linkage rod 62 and a counterweight 63; the top end of the knife rod 2 is exposed from above the upper ring 14 and the bearing 4 in the upper assembly space; the counterweight 63 is provided with a second matching space 65 that passes through its upper and lower surfaces, and the exposed area of ​​the top end of the knife rod 2 is slidably matched with the second matching space 65, and an adjustment block 66 is provided in the second matching space 65, and the adjustment block 66 is fixed in the matching groove 22, and the shape of the adjustment block 66 corresponds to the shape of the cross section of the matching groove 22; there is a gap between the adjustment block 66 and the inner wall of the matching groove 22 and between the knife rod 2 and the inner wall of the second matching space 65. There is a gap for sliding fit between the knife rod 2 and the counterweight 63; through the sliding fit between the knife rod 2 and the second fitting space 65, the device realizes the sliding fit between the bearing inner ring 42 and the knife rod 2 on the basis of driving the knife rod 2 to rotate when the closing mechanism 6 rotates relative to the main body 1 to close the blade 3; at the same time, the setting of the adjustment block 66 and the fitting groove 22 not only makes the sliding fit between the knife rod 2 and the second fitting space 65 more stable, but also makes it difficult for the knife rod 2 and the counterweight 63 to slip when the rotation force of the closing mechanism 6 is transmitted to the knife rod 2, and the force for the rotation of the knife rod 2 can be stably transmitted.

[0062] In the present invention, the linkage rod 62 is vertically arranged and fixedly connected to the counterweight block 63; both ends of the linkage rod 62 are exposed from the upper and lower surfaces of the counterweight block 63; the linkage piece 61 is rotatably sleeved on the connecting rod 11, and a sliding groove 64 is provided on the linkage piece 61, and the top end of the linkage rod 62 is in the sliding groove 64; the upper collar 14 is provided with a slot 16, and the bottom end of the linkage rod 62 is in the slot 16; the length direction of the slot 16 corresponds to the circumferential direction of the upper collar 14 and the connecting rod 11, and the linkage rod 62 can reciprocate around the upper collar 14 and the connecting rod 11 along the length direction of the slot 16; the body 1 and the drive The linkage piece 61 rotates under the drive of the linkage rod 62, and the driving device continues to drive the body 1 to rotate to realize the paint stripping process; at this time, the amplitude of the relative rotation of the linkage rod 62 and the counterweight 63 is the degree of closure of the blade 3. The greater the amplitude of the rotation of the linkage rod 62 and the counterweight 63, the tighter the blade 3 is closed and the deeper the paint stripping is.

[0063] In the present invention, an adjusting flange 7 is detachably mounted on the connecting rod 11, and an adjusting torsion spring 8 is sleeved on the connecting rod 11; the two ends of the adjusting torsion spring 8 are respectively connected to the adjusting flange 7 and the linkage piece 61; through the setting and coordination of the adjusting flange 7, the adjusting torsion spring 8 and the linkage piece 61, after the main body 1 stops rotating, the adjusting torsion spring 8 drives the linkage piece 61 to reset through its own torque, and then also drives the linkage rod 62 and the counterweight block 63 to reset, and the knife rod 2 rotates, so that the blade 3 is opened and reset.

[0064] In the present invention, the torque of the torsion spring 8 can be adjusted by adjusting the flange 7, thereby changing the closing force of the blade 3, and the closing force of the blade 3 is also the paint stripping force; at the same time, when the torque of the torsion spring 8 is changed, the force supporting the blade 3 to open and reset is also changed.

[0065] In the present invention, the length of the card slot 16 is set to limit the degree of relative rotation between the linkage rod 62 and the counterweight block 63 and the main body 1, thereby limiting the degree of self-rotation of the knife rod 2 and the closing of the blade 3, so as to avoid the blade 3 closing too tightly and damaging the workpiece 9; it is worth noting that, in the present invention, the length of the card slot 16 is related to the degree of closing of the blade 3, and the length of the card slot 16 needs to be determined according to actual needs.

[0066] In the present invention, an adjusting screw 17 is also provided on the upper collar 14, and the adjusting screw 17 and the upper collar 14 are adjustable through threaded cooperation and extend into the slot 16; when the closing mechanism 6 and the main body 1 rotate relative to each other to drive the knife rod 2 to rotate and close the blade 3, the bottom end of the linkage rod 62 moves toward one end of the slot 16, and the adjusting screw 17 extends into the slot 16 from the direction of this end; through threaded cooperation, the adjusting screw 17 can accurately and stably extend into or out of the slot 16, thereby achieving fine-tuning of the closing degree of the blade 3 to achieve paint stripping work of different depths, and at the same time, it can also prevent the blade 3 from closing too tightly and damaging the workpiece 9; by adjusting the depth of the screw 17 extending into the slot 16, the range of movement of the linkage rod 62 in the slot 16 can be accurately controlled, and then the closing degree of the blade 3 can be fine-tuned to meet the requirements of different paint stripping depths.

[0067] In the present invention, the bottom end of the knife rod 2 is exposed from below the lower ring 15 and the bearing 4 in the lower assembly space; a blade mounting block 23 is provided at the bottom end of the knife rod 2, and the blade 3 is detachably mounted on the blade mounting block 23; the blade 3 is detachably mounted on the blade mounting block 23, making the replacement of the blade 3 very simple and quick; the size of the blade mounting block 23 is larger than the inner diameter of the lower assembly space, so that when the knife rod 2 is adjusted in height, it can be avoided that the blade 3 cannot be stripped due to being adjusted too high.

[0068] In the present invention, the blade 3 includes a mounting portion 31 and a blade 32; the mounting portion 31 and the blade mounting block 23 are detachably matched by screws and screw holes; a downwardly extending blade connecting portion 33 is provided on the mounting portion 31, and the blade 32 is provided at the bottom of the blade connecting portion 33, and the blade 32 is tilted; the tilted blade 32 can cut into the paint layer more smoothly during the paint stripping process, reducing the cutting resistance, helping to strip the paint layer more thoroughly and reducing residue; and the setting of the blade connecting portion 33 enables the blade 32 to reach the root of the workpiece 9 and perform paint stripping treatment on its root, so as to improve the paint stripping effect and the paint stripping quality of the device.

[0069] In this embodiment, the number of the knife rods 2 is three groups, and they are distributed in the shape of an equilateral triangle; thereby, the device can perform paint stripping work more evenly; at the same time, the number of upper assembly spaces, lower assembly spaces, linkage rods 62, counterweights 63 and slots 16 corresponds to the number of knife rods 2.

[0070] It is worth noting that other technical solutions of the present invention belong to the existing technology and are therefore not described in detail.

[0071] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A novel adjustable paint stripping device, comprising a body connected to a drive device and a knife rod distributed around the body, wherein the bottom end of the knife rod is equipped with a blade; characterized in that: The body includes a connecting rod and a collar, the collar is equipped with a bearing, the outer ring of the bearing is fixedly connected to the collar, and the inner ring of the bearing is slidably matched with the knife rod; The knife rod is provided with a limiting portion which can limit the sliding fit between the knife rod and the outer ring of the bearing; A closing mechanism is provided at the top end of the knife rod, which is assembled on the main body and rotates relative to the main body within a certain range, thereby driving the knife rod to rotate and close the blade; the number of the knife rods is two or more, and each group of knife rods can be individually rotatably and slidably matched with the corresponding bearing.

2. A novel adjustable paint stripping device according to claim 1, characterized in that: The knife rod is cylindrical, and its dimensions at all locations in the axial direction are consistent; a first matching portion arranged along its axial direction is provided on the outer surface of at least one side of the knife rod; The inner ring of the bearing is provided with a first matching space matching with the knife rod, and a second matching portion matching with the first matching portion is provided in the first matching space.

3. A novel adjustable paint stripping device according to claim 2, characterized in that: The knife rod is cylindrical, and the first matching part includes a matching groove arranged along the axial direction of the knife rod; the second matching part includes a matching block fixed in the first matching space, the matching block is in the matching groove, and the shape of the matching block corresponds to the shape of the cross-section of the matching groove; there is a gap between the matching block and the inner wall of the matching groove and between the knife rod and the inner wall of the first matching space for sliding fit between the knife rod and the inner ring of the bearing.

4. A novel adjustable paint stripping device according to claim 2 or 3, characterized in that: The limiting portion includes a limiting block, the diameter of which is larger than the inner diameter of the first matching space; a mounting hole is provided in the limiting block and passes through the upper and lower surfaces thereof, the shape of the mounting hole matches the knife rod, and the limiting block is movably sleeved on the knife rod through the mounting hole; a limiting hole is also provided on the limiting block, the two ends of the limiting hole are respectively a limiting inlet and a limiting outlet, the limiting hole is connected to the mounting hole through the limiting outlet, and the limiting inlet is provided on the outer surface of the limiting block; The limiting part also includes a limiting rod that is detachably matched with the limiting hole. The limiting rod abuts against the knife rod in the installation hole to fix the limiting block on the knife rod.

5. A novel adjustable paint stripping device according to claim 4, characterized in that: The ring includes an upper ring and a lower ring; the upper ring and the lower ring are both provided with an assembly space passing through the upper and lower surfaces thereof for assembling the bearing; the limit block is located between the upper ring and the lower ring, and a contact portion is provided at the end of the limit block. When the limit block is fixed on the knife rod, only the contact portion abuts against the inner ring of the bearing.

6. A novel adjustable paint stripping device according to claim 5, characterized in that: The assembly space includes an upper assembly space provided on the upper collar and a lower assembly space provided on the lower collar; The knife rod is tilted, with its bottom end facing the central axis of the connecting rod; The upper assembly space and the lower assembly space are both arranged on the upper and lower collars in a circular distribution; the diameter of the circle formed by the upper assembly space is larger than the diameter of the circle formed by the lower assembly space.

7. A novel adjustable paint stripping device according to claim 6, characterized in that: The closing mechanism includes a linkage plate, a linkage rod, and a counterweight; the top end of the knife rod is exposed from above the bearing in the upper collar and the upper assembly space; the counterweight is provided with a second matching space that passes through its upper and lower surfaces, and the exposed area of ​​the top end of the knife rod is slidably engaged with the second matching space, and an adjustment block is provided in the second matching space, the adjustment block being fixed in the matching groove, and the shape of the adjustment block corresponds to the shape of the cross-section of the matching groove; there is a gap between the adjustment block and the inner wall of the matching groove, and between the knife rod and the inner wall of the second matching space, for the knife rod and the counterweight to slide together; The linkage rod is vertically arranged and fixedly connected to the counterweight; both ends of the linkage rod are exposed from the upper and lower surfaces of the counterweight; The linkage piece is rotatably sleeved on the connecting rod, and a sliding groove is provided on the linkage piece, and the top end of the linkage rod is located in the sliding groove; The upper collar is provided with a slot, and the bottom end of the linkage rod is located in the slot; the length direction of the slot corresponds to the circumferential direction of the upper collar and the connecting rod, and the linkage rod can reciprocate around the upper collar and the connecting rod along the length direction of the slot; The connecting rod is detachably equipped with an adjusting flange, and an adjusting torsion spring is sleeved on the connecting rod; The two ends of the adjusting torsion spring are respectively connected to the adjusting flange and the linkage piece.

8. A novel adjustable paint stripping device according to claim 7, characterized in that: An adjusting screw is also provided on the upper collar, and the adjusting screw and the upper collar are adjusted to extend into the slot through threaded cooperation; when the closing mechanism and the body rotate relative to each other to drive the knife rod to rotate and close the blade, the bottom end of the linkage rod moves toward one end of the slot, and the adjusting screw extends into the slot from the direction of this end.

9. A novel adjustable paint stripping device according to claim 6, characterized in that: The bottom end of the knife rod is exposed from below the lower ring and the bearing in the lower assembly space; the bottom end of the knife rod is provided with a blade mounting block, and the blade is detachably mounted on the blade mounting block; The size of the blade mounting block is larger than the inner diameter of the lower assembly space.

10. A novel adjustable paint stripping device according to claim 9, characterized in that: The blade includes a mounting portion and a blade; the mounting portion and the blade mounting block are detachably matched via screws and screw holes; a blade connecting portion extending downward is provided on the mounting portion, the blade is provided at the bottom of the blade connecting portion, and the blade is arranged at an angle.

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