Automobile steel plate spring surface impurity treatment device

Abstract

The invention relates to the field of automobile steel plate spring treatment, in particular to an automobile steel plate spring surface impurity treatment device which comprises a polishing assembly, a first cleaning assembly, a second cleaning assembly, a first cleaning assembly and a second cleaning assembly. A plurality of annular protrusions are formed on the side wall face of the second rotating shaft in the axial direction at intervals, and the area, making contact with the annular protrusions, of the elastic grinding belt is extruded to protrude outwards. The first motor is connected with the grinding assembly and used for driving the whole grinding assembly to rotate; and the machining platform is arranged below the grinding assembly. According to the scheme, the annular protrusion is arranged, so that the local pressure of the elastic grinding belt is increased under extrusion of the annular protrusion, the grinding strength is improved, and the grinding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of automobile leaf spring processing, in particular to a device for processing impurities on the surface of an automobile leaf spring. Background Art

[0002] After the processing of the automobile leaf spring is completed, the leaf spring needs to be polished. A mounting hole is set in the central area of ​​the leaf spring, and the inner wall surface of the mounting hole also needs to be polished to ensure the normal progress of the subsequent installation process. The existing technology usually uses a cylindrical polishing head to polish the inner wall surface of the mounting hole, but this polishing method not only has poor polishing efficiency, but also the polished surface is not uniform and the polishing effect is not good. Summary of the invention

[0003] An object of the present invention is to improve the grinding efficiency of the hole wall of the mounting hole on the automobile leaf spring.

[0004] A further object of the present invention is to improve the grinding effect of the hole wall of the mounting hole on the automobile leaf spring.

[0005] In particular, the present invention provides a device for treating impurities on the surface of an automobile leaf spring, comprising: a grinding assembly, comprising a first rotating shaft, a second rotating shaft and an elastic grinding belt, the elastic grinding belt being sleeved on the first rotating shaft and the second rotating shaft; wherein a plurality of annular protrusions are formed on the side wall surface of the second rotating shaft at axial intervals, and the area where the elastic grinding belt contacts the annular protrusions is squeezed and protrudes outward; a first motor is connected to the grinding assembly and is used to drive the grinding assembly to rotate as a whole; a processing platform is arranged below the grinding assembly.

[0006] Furthermore, the grinding assembly also includes: a second motor, which is arranged above the first rotating shaft and connected to the first rotating shaft; the rotation of the second motor drives the first rotating shaft to rotate, and then drives the elastic grinding belt to rotate; wherein the rotation direction of the second motor is opposite to the rotation direction of the first motor.

[0007] Furthermore, a plurality of protrusions are formed at intervals on the inner wall surface of the elastic grinding belt; a plurality of first grooves are formed on the side wall of the first rotating shaft, and the shapes of the first grooves are adapted to the protrusions; and the distance between every two circumferentially adjacent first grooves is twice the distance between every two circumferentially adjacent protrusions.

[0008] Furthermore, the grinding assembly also includes: a connecting rod, one end of the connecting rod extends outward in a radial direction to form a mounting plate, and the mounting plate is connected to the first motor; the other end of the connecting rod extends outward in a radial direction to form a mounting frame, and the mounting frame is formed with a first through groove and a second through groove relative to each other; the first through groove and the second through groove are respectively provided with a first slidable slider and a second slider; the first rotating shaft and the second rotating shaft are respectively passed through the first slider and the second slider; the first slider and the second slider are also respectively provided with a first spring and a second spring on the side wall facing the connecting rod.

[0009] Furthermore, the grinding assembly also includes: two tensioning rollers arranged opposite to each other; the two tensioning rollers are both arranged inside the elastic grinding belt, and support the elastic grinding belt together with the first rotating shaft and the second rotating shaft.

[0010] Furthermore, a third through slot and a fourth through slot are formed opposite to each other on the mounting frame, and the third through slot and the fourth through slot are perpendicular to the first through slot and the second through slot; two tensioning rollers are slidably disposed in the third through slot and the fourth through slot, respectively.

[0011] Furthermore, the grinding assembly also includes: a fixed ring, which is sleeved on the connecting rod and located above the mounting frame; two sleeves are formed on the side wall of the fixed ring, and a third spring is respectively arranged in the two sleeves; two connecting rings, which are respectively sleeved on the two tensioning rollers; two sleeve rods are respectively formed on the side walls of the two connecting rings, and the two sleeve rods are respectively extended into the two sleeves; one end of each third spring abuts against the bottom surface of a sleeve, and the other end abuts against the end surface of a sleeve rod.

[0012] Furthermore, a plurality of second grooves are formed at intervals on the side wall of each tensioning roller, and the shape of the second grooves is adapted to the protrusion; wherein the distance between every two adjacent second grooves is consistent with the distance between every two adjacent protrusions.

[0013] Furthermore, the surface impurity processing device for automobile leaf springs also includes: a screw assembly, which is arranged on the processing platform; a lifting platform, which is sleeved on the screw assembly; and the lifting platform is configured to move up and down along the screw assembly; a connecting arm, one end of which is installed on the lifting platform, and the other end is connected to the first motor.

[0014] Furthermore, the screw assembly includes: a screw having a thread formed on its side wall; at least one sliding rod arranged parallel to the screw; a reversible motor connected to the screw; a threaded hole and at least one through hole formed on the lifting platform, the screw is inserted into the threaded hole, and at least one sliding rod is inserted into at least one through hole.

[0015] The beneficial effects of the present invention are:

[0016] The surface impurity treatment device for a leaf spring of an automobile of the present invention is provided with a plurality of annular protrusions spaced in the axial direction on the side wall of the second rotating shaft of the grinding assembly, so that when the elastic grinding belt is sleeved on the second rotating shaft, the area on the elastic grinding belt in contact with the annular protrusions will be squeezed and protrude outward. During the grinding process, due to the squeezing of the annular protrusions, the local pressure on the elastic grinding belt is increased, thereby improving the grinding efficiency.

[0017] Furthermore, the surface impurity treatment device for automobile leaf springs of the present invention is provided with a second motor on the first rotating shaft, so that the first rotating shaft rotates and drives the elastic grinding belt to rotate. By setting the rotation direction of the second motor to be opposite to the rotation direction of the first motor, the grinding intensity of the elastic grinding belt is enhanced, and the grinding efficiency is further improved.

[0018] Furthermore, the surface impurity treatment device for automobile leaf springs of the present invention arranges a first groove on the first rotating shaft, arranges a protrusion on the inner wall of the elastic grinding belt, and sets the spacing between circumferentially adjacent first grooves to twice the spacing between circumferentially adjacent protrusions, so that the circumferential wall where the elastic grinding belt contacts the first rotating shaft forms an axially continuous and circumferentially spaced protruding grinding surface, which cooperates with the axially spaced annular raised grinding surface on the second rotating shaft to perform grinding in multiple directions, which not only avoids the uneven grinding and scratch problems that are easy to occur in single-direction grinding, but also improves the grinding efficiency and ensures grinding uniformity.

[0019] Furthermore, the surface impurity treatment device for automobile leaf springs of the present invention utilizes a first motor to drive the grinding assembly to rotate, and utilizes a screw assembly to enable the grinding assembly to move up and down at the same time, so that the grinding effect of the grinding assembly is more uniform and comprehensive, thereby improving the grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. In the accompanying drawings:

[0021] Figure 1 2 is a schematic structural diagram of a device for treating impurities on the surface of a leaf spring of an automobile according to an embodiment of the present invention;

[0022] Figure 2 2 is a schematic structural diagram of a grinding assembly of a surface impurity treatment device for an automobile leaf spring according to an embodiment of the present invention;

[0023] Figure 3 is an exploded schematic diagram of a grinding assembly of a surface impurity treatment device for an automobile leaf spring according to an embodiment of the present invention;

[0024] Figure 4 yes Figure 3Schematic enlarged view of region X;

[0025] Figure 5 is a structural schematic diagram from another angle of a grinding assembly of a device for treating impurities on the surface of a leaf spring of an automobile according to an embodiment of the present invention;

[0026] Figure 6 is along Figure 5 A schematic cross-sectional view taken along the cutting line AA in FIG.

[0027] Figure 7 yes Figure 6 Schematic enlargement of region Y in the middle;

[0028] Figure 8 yes Figure 6 Schematic enlargement of the middle region Z;

[0029] Fig. 9 is along Figure 5 A schematic cross-sectional view taken along the cutting line BB in FIG.

[0030] Fig.10 2 is a schematic structural diagram of an elastic grinding belt of a surface impurity treatment device for an automobile leaf spring according to an embodiment of the present invention;

[0031] Fig.11 The present invention is a schematic structural diagram of a lifting platform and a connecting arm of a surface impurity treatment device for an automobile leaf spring according to an embodiment of the present invention.

[0032] Among them: 100, grinding assembly; 110, first rotating shaft; 111, first groove; 120, second rotating shaft; 121, annular protrusion; 130, elastic grinding belt; 131, bump; 132, triangular area; 140, second motor; 150, connecting rod; 151, mounting plate; 1511, connecting hole; 152, mounting frame; 1521, first through groove; 1522, second through groove; 1523, third through groove; 1524, fourth through groove; 153, first slider; 154, second slider; 155, first A spring; 156, a second spring; 160, a tensioning roller; 161, a second groove; 170, a fixing ring; 171, a sleeve; 180, a connecting ring; 181, a sleeve rod; 190, a third spring; 200, a first motor; 300, a processing platform; 310, a cylinder clamping assembly; 400, a screw assembly; 410, a screw; 420, a sliding rod; 430, a reversible motor; 500, a lifting platform; 510, a through hole; 520, a threaded hole; 600, a connecting arm; 610, a fixing plate; 700, an automobile leaf spring. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The terms "first", "second", "third" and "fourth" herein are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0035] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0036] It should be understood that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “vertical”, “bottom”, “inner”, “outer”, “radial”, “axial” and “circumferential” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] Refer to the following Figures 1 to 11 The present invention will now describe a device for treating impurities on the surface of an automobile leaf spring.

[0039] Figure 1 The present invention is a schematic structural diagram of a device for treating impurities on the surface of an automobile leaf spring according to an embodiment of the present invention. Figure 1 In order to better illustrate the working state of the device for treating impurities on the surface of an automobile leaf spring, an automobile leaf spring 700 (i.e., a part to be polished) is shown. Figure 2 1 is a schematic structural diagram of a grinding assembly 100 of a device for treating impurities on the surface of an automobile leaf spring according to an embodiment of the present invention.

[0040] This embodiment first provides a device for treating impurities on the surface of a leaf spring for an automobile. The device for treating impurities on the surface of a leaf spring for an automobile may generally include: a grinding assembly 100 , a first motor 200 and a processing platform 300 .

[0041] The grinding assembly 100 may generally include a first rotating shaft 110, a second rotating shaft 120 and an elastic grinding belt 130, and the elastic grinding belt 130 is sleeved on the first rotating shaft 110 and the second rotating shaft 120. A plurality of annular protrusions 121 are formed on the side wall surface of the second rotating shaft 120 at intervals along the axis, and the area where the elastic grinding belt 130 contacts the annular protrusions 121 is squeezed and protrudes outward. The first motor 200 is connected to the grinding assembly 100 and is used to drive the grinding assembly 100 to rotate as a whole. The processing platform 300 is arranged below the grinding assembly 100.

[0042] In the solution of this embodiment, a plurality of spaced annular protrusions 121 are provided on the side wall of the second rotating shaft 120 of the grinding assembly 100, so that when the elastic grinding belt 130 is sleeved on the second rotating shaft 120, the area on the elastic grinding belt 130 that contacts the annular protrusions 121 will be squeezed and protrude outward. During the grinding process, due to the squeezing of the annular protrusions 121, the local pressure on the elastic grinding belt 130 increases, thereby increasing the grinding intensity of the area, thereby improving the grinding efficiency.

[0043] The processing platform 300 is used to place and fix the automobile leaf spring 700 (i.e., the part to be polished). Figure 1 As shown, in some embodiments, a plurality of cylinder clamping assemblies 310 are disposed on the processing platform 300. The plurality of cylinder clamping assemblies 310 fix the workpiece to be polished from all directions, thereby improving the structural stability of the workpiece to be polished.

[0044] In some preferred embodiments, both ends of each annular protrusion 121 are formed with arc chamfers.

[0045] In the solution of this embodiment, annular arc chamfers are provided at both ends of each annular protrusion 121 , thereby preventing the edges of the annular protrusion 121 from wearing the elastic polishing belt 130 , thereby ensuring the service life of the elastic polishing belt 130 .

[0046] Figure 3 Schematic diagram of an exploded view of a grinding assembly 100 of a device for treating impurities on the surface of a leaf spring of an automobile according to an embodiment of the present invention. Figure 4 yes Figure 3 Schematic enlargement of region X.

[0047] The grinding assembly 100 may generally further include: a second motor 140, which is disposed above the first rotating shaft 110 and connected to the first rotating shaft 110. The second motor 140 rotates to drive the first rotating shaft 110 to rotate, thereby driving the elastic grinding belt 130 to rotate. The rotation direction of the second motor 140 is opposite to that of the first motor 200.

[0048] In the solution of this embodiment, the second motor 140 is arranged on the first rotating shaft 110, so that the first rotating shaft 110 rotates and drives the elastic grinding belt 130 to rotate. By setting the rotation direction of the second motor 140 to be opposite to the rotation direction of the first motor 200, the grinding intensity of the elastic grinding belt 130 is enhanced, and the grinding efficiency is further improved.

[0049] Figure 6 is along Figure 5 A schematic cross-sectional view taken along the cutting line AA in FIG. Figure 7 yes Figure 6 Schematic enlargement of region Y in the middle. Figure 8 yes Figure 6 Schematic enlargement of region Z. Fig. 9 is along Figure 5 A schematic cross-sectional view taken along the cutting line BB in FIG. Fig.10 1 is a schematic structural diagram of an elastic grinding belt 130 of a device for treating impurities on the surface of an automobile leaf spring according to an embodiment of the present invention.

[0050] A plurality of protrusions 131 are formed at intervals on the inner wall surface of the elastic polishing belt 130. A plurality of first grooves 111 are formed on the side wall of the first rotating shaft 110, and the shapes of the first grooves 111 are adapted to the protrusions 131. And the distance between every two circumferentially adjacent first grooves 111 is twice the distance between every two circumferentially adjacent protrusions 131.

[0051] The solution of this embodiment is to set a protrusion 131 on the inner wall surface of the elastic polishing belt 130 and set a corresponding first groove 111 on the side wall of the first rotating shaft 110, and utilize the clamping connection between the protrusion 131 and the first groove 111 to enable the first rotating shaft 110 to drive the elastic polishing belt 130 to rotate when the second motor 140 rotates and drives the first rotating shaft 110.

[0052] When the elastic polishing belt 130 rotates, the second rotating shaft 120 rotates driven by the friction between the annular protrusion 121 on the second rotating shaft 120 and the elastic polishing belt 130 because the pressure on the elastic polishing belt 130 is relatively large.

[0053] In the solution of this embodiment, the distance between two circumferentially adjacent first grooves 111 is set to twice the distance between two circumferentially adjacent protrusions 131, so that in the circumferential direction, when each protrusion 131 is embedded in the first groove 111, its adjacent protrusion 131 will directly press against the side wall of the first rotating shaft 110.

[0054] like Figure 6-7 As shown, when a convex block 131 is embedded in the first groove 111, the adjacent convex block 131 abuts against the side wall surface of the first rotating shaft 110, so that the portion of the elastic polishing belt 130 in contact with the first rotating shaft 110 forms a relatively protruding area with intervals in the circumferential direction, and the area is continuous in the axial direction of the first rotating shaft 110. During the polishing process of the elastic polishing belt 130, only the protruding portion of the elastic polishing belt 130 contacts the hole wall to be polished. Compared with polishing with the entire polishing surface in contact (i.e., face-to-face polishing), under the action of the convex block 131, the local contact (line-to-face) makes the polishing intensity greater, thereby improving the polishing efficiency.

[0055] On the side wall of the second rotating shaft 120 are annular protrusions 121 formed at intervals in the axial direction, that is, after the part of the elastic polishing belt 130 that contacts the second rotating shaft 120 polishes the hole wall to be polished, an annular area that has not been polished will remain on the hole wall. The protruding part of the elastic polishing belt 130 that contacts the first rotating shaft 110 is continuous in the vertical direction, so that the elastic polishing belt 130 can polish the entire hole wall to be polished in the vertical direction, thereby ensuring the polishing quality. In addition, after being partially polished by the second rotating shaft 120, the unpolished part on the hole wall is partially protruding in the axial direction. When the elastic polishing belt 130 on the first rotating shaft 110 contacts it, it is also a partial contact (point to line), the polishing intensity is greater, and the polishing efficiency is further improved.

[0056] like Figure 3As shown, in some preferred embodiments, the size of the elastic polishing belt 130 is set to be smaller. The first grooves 111 on the first rotating shaft 110 are arranged at intervals along the circumferential direction, and are arranged in the axial direction corresponding to the axial distribution of the protrusions 131 on the elastic polishing belt 130. Two adjacent elastic polishing belts 130 are spliced ​​together along their axial direction, and the protrusions 131 thereon can be just spliced ​​together in the axial direction, and the corresponding two first grooves 111 on the first rotating shaft 110 are connected together in the axial direction to form a large groove. The two protrusions 131 are embedded in a large groove together, so that the elastic polishing belt 130 and the first rotating shaft 110 are installed more tightly.

[0057] In some embodiments, a magnetic sheet may be provided at the bottom of the first groove 111 , and a corresponding magnetic sheet may be provided on the protrusion 131 opposite to the first groove 111 , so as to utilize magnetic force to ensure that the protrusion 131 can be smoothly embedded in the first groove 111 .

[0058] In some preferred embodiments, the size of the elastic grinding belt 130 is set to be relatively small, and a plurality of elastic grinding belts 130 are spliced ​​and sleeved on the first rotating shaft 110 and the second rotating shaft 120. The joint where two adjacent elastic grinding belts 130 are spliced ​​together is set at the center line of the annular protrusion 121, or at the center line of the annular groove formed between two adjacent annular protrusions 121. The joint is prevented from appearing at the arc chamfer of the annular protrusion 121, thereby avoiding the accumulation of wear debris in the triangular area 132 formed by the annular protrusion 121, the annular groove and the elastic grinding belt 130, and ensuring the normal operation of the surface impurity treatment device for the automobile leaf spring.

[0059] In some embodiments, the elastic polishing belt 130 is configured as a larger integrated structure, directly and entirely covering the sidewall surfaces of the first rotating shaft 110 and the second rotating shaft 120 .

[0060] The grinding assembly 100 may also generally include: a connecting rod 150, one end of which extends outward in the radial direction to form a mounting plate 151, and the mounting plate 151 is connected to the first motor 200; the other end of the connecting rod 150 extends outward in the radial direction to form a mounting frame 152, and the mounting frame 152 is formed with a first through groove 1521 and a second through groove 1522 opposite to each other. A first sliding block 153 and a second sliding block 154 that can slide are respectively arranged in the first through groove 1521 and the second through groove 1522; the first rotating shaft 110 and the second rotating shaft 120 are respectively arranged on the first sliding block 153 and the second sliding block 154. The first sliding block 153 and the second sliding block 154 are also respectively provided with a first spring 155 and a second spring 156 on the side wall facing the connecting rod 150.

[0061] like Figure 2As shown, in the solution of this embodiment, a connecting hole 1511 may be formed on the mounting plate 151 to fix the mounting plate 151 on the first motor 200 , thereby realizing the overall rotation of the grinding assembly 100 .

[0062] The solution of this embodiment is to set the first through slot 1521 and the second through slot 1522 on the mounting frame 152, set the first slider 153 and the second slider 154 in the first through slot 1521 and the second through slot 1522, and then respectively pass the first rotating shaft 110 and the second rotating shaft 120 through the first slider 153 and the second slider 154, so that the first rotating shaft 110 and the second rotating shaft 120 can move relative to the first through slot 1521 and the second through slot 1522. That is to say, within the range not exceeding the limit position of the first through slot 1521 and the second through slot 1522, the grinding assembly 100 can adapt the aperture of the mounting hole to be grinded after extending into the mounting hole to be grinded, so as to grind the hole wall of different apertures. At the same time, under the elastic force of the first spring 155 and the second spring 156, the elastic grinding belt 130 on the first rotating shaft 110 and the second rotating shaft 120 can fully contact the hole wall of the mounting hole, thereby improving the grinding quality.

[0063] It is understandable that, when the grinding assembly 100 is inserted into the mounting hole, the distance between the first rotating shaft 110 and the second rotating shaft 120 can be shortened manually, so that the grinding assembly 100 can be smoothly inserted into the mounting hole. After the grinding assembly 100 is inserted into the mounting hole, the first rotating shaft 110 and the second rotating shaft 120 squeeze the elastic grinding belt 130 under the elastic force of the first spring 155 and the second spring 156, so that the elastic grinding belt 130 is tightly attached to the hole wall of the mounting hole.

[0064] The grinding assembly 100 may generally further include: two tension rollers 160 disposed opposite to each other; the two tension rollers 160 are both disposed inside the elastic grinding belt 130 , and support the elastic grinding belt 130 together with the first rotating shaft 110 and the second rotating shaft 120 .

[0065] In the solution of this embodiment, two opposite tensioning rollers 160 are provided, and the elastic grinding belt 130 is supported together by the two tensioning rollers 160 and the first rotating shaft 110 and the second rotating shaft 120, so that the elastic grinding belt 130 is tensioned.

[0066] The mounting frame 152 is further formed with a third through slot 1523 and a fourth through slot 1524 which are opposite to each other and are perpendicular to the first through slot 1521 and the second through slot 1522. Two tension rollers 160 are slidably disposed in the third through slot 1523 and the fourth through slot 1524, respectively.

[0067] The solution of this embodiment is to set a third through groove 1523 and a fourth through groove 1524, and respectively set two tensioning rollers 160 movably in the third through groove 1523 and the fourth through groove 1524, so that when the first rotating shaft 110 and the second rotating shaft 120 move relative to the first through groove 1521 and the second through groove 1522, the two tensioning rollers 160 can move accordingly, thereby ensuring the tensioning effect of the elastic grinding belt 130.

[0068] The grinding assembly 100 may generally further include: a fixing ring 170 and two connecting rings 180. The fixing ring 170 is sleeved on the connecting rod 150 and is located above the mounting frame 152. Two sleeves 171 are formed on the side wall of the fixing ring 170, and a third spring 190 is respectively arranged in the two sleeves 171. The two connecting rings 180 are respectively sleeved on the two tensioning rollers 160. Two sleeve rods 181 are respectively formed on the side walls of the two connecting rings 180, and the two sleeve rods 181 extend into the two sleeves 171 respectively. One end of each third spring 190 abuts against the bottom surface of a sleeve 171, and the other end abuts against the end surface of a sleeve rod 181.

[0069] In the solution of this embodiment, a fixing ring 170 is sleeved on the connecting rod 150, a connecting ring 180 is sleeved on the tension roller 160, and the two tension rollers 160 are connected to the connecting rod 150 by using a sleeve 171 on the fixing ring 170 and a sleeve rod 181 on the connecting ring 180, so that the tension roller 160 can move relative to the connecting rod 150. By providing two third springs 190, the two tension rollers 160 can tightly contact and support the elastic grinding belt 130 under the action of elastic force, thereby improving the tensioning effect of the elastic grinding belt 130.

[0070] A plurality of second grooves 161 are formed at intervals on the side wall of each tension roller 160 , and the shape of the second grooves 161 matches the shape of the protrusions 131 . The distance between every two adjacent second grooves 161 is consistent with the distance between every two adjacent protrusions 131 .

[0071] In the solution of this embodiment, a plurality of second grooves 161 are provided on the side wall of the tension roller 160, and the spacing and shape of the second grooves 161 are set to match the protrusions 131, so that the protrusions 131 can be embedded in the second grooves 161, thereby driving the tension roller 160 to rotate. Driven by the elastic polishing belt 130, the tension roller 160 rotates with the elastic polishing belt 130, thereby reducing the surface friction resistance of the elastic polishing belt 130 and the tension roller 160, and reducing the wear risk of the elastic polishing belt 130.

[0072] Fig.111 is a schematic structural diagram of a lifting platform 500 and a connecting arm 600 of a device for treating impurities on the surface of a leaf spring of an automobile according to an embodiment of the present invention.

[0073] The device for treating impurities on the surface of a leaf spring for an automobile may generally further include: a screw assembly 400 , a lifting platform 500 and a connecting arm 600 .

[0074] The screw assembly 400 is disposed on the processing platform 300. The lifting platform 500 is sleeved on the screw assembly 400 and is configured to move up and down along the screw assembly 400. The connecting arm 600 has one end mounted on the lifting platform 500 and the other end connected to the first motor 200.

[0075] The solution of this embodiment is to provide a screw assembly 400 and a lifting platform 500 that can move up and down along the screw assembly 400, and to use a connecting arm 600 connected to the lifting platform 500 and the first motor 200, so that when the lifting platform 500 moves up and down, it drives the first motor 200 to move up and down, and then drives the grinding assembly 100 to move up and down. The grinding assembly 100 moves up and down while rotating, so that the grinding assembly 100 can grind the hole wall from multiple directions and dimensions, which not only further improves the grinding efficiency, but also avoids the uneven grinding and scratches that are easy to occur in single-direction grinding, and greatly improves the grinding quality of the grinding assembly 100.

[0076] like Fig.11 As shown, in some embodiments, a fixing plate 610 may be provided at one end of the connecting arm 600 to firmly fix the connecting arm 600 on the lifting platform 500 .

[0077] In other embodiments, the connecting arm 600 and the lifting platform 500 may be configured to be integrally formed to improve structural stability.

[0078] The screw assembly 400 may generally include: a screw 410 having a thread formed on its side wall; at least one slide rod 420 arranged parallel to the screw 410; and a reversible motor 430 connected to the screw 410. A threaded hole 520 and at least one through hole 510 are formed on the lifting platform 500, the screw 410 is inserted into the threaded hole 520, and the at least one slide rod 420 is inserted into the at least one through hole 510.

[0079] The solution of this embodiment is to provide a screw rod 410 with a thread and to provide a corresponding threaded hole 520 on the lifting platform 500, so that when the screw rod 410 rotates forward and backward under the drive of the reversible motor 430, the lifting platform 500 moves up and down accordingly. By providing a slide bar 420 parallel to the screw rod 410 and providing a corresponding through hole 510 on the lifting platform 500, the lifting platform 500 is simultaneously sleeved on the screw rod 410 and the slide bar 420, thereby ensuring the structural stability of the lifting platform 500 and further improving the smoothness of movement of the lifting platform 500.

[0080] In some preferred embodiments, the screw assembly 400 may include a plurality of slide bars 420 , which are arranged in parallel and pass through the lifting platform 500 to further improve the structural stability of the lifting platform 500 .

[0081] In some preferred embodiments, the reversible motor 430 is configured to make the lifting platform 500 move up and down a distance slightly smaller than half of the distance between two adjacent annular protrusions 121 of the second rotating shaft 120, thereby avoiding the grinding areas of the annular protrusions 121 overlapping and causing over-grinding when the grinding assembly 100 moves up and down.

[0082] In some preferred embodiments, chip removal holes are provided in the area on the processing platform 300 corresponding to the mounting holes on the automobile leaf spring 700, which improves the chip removal efficiency and enables the grinding assembly 100 to move down to the bottom of the mounting hole, ensuring that every part of the hole wall of the mounting hole can be ground, thereby improving the grinding quality.

[0083] The solution of this embodiment is to set a first motor 200 to drive the grinding assembly 100 to rotate, set a second motor 140 to drive the elastic grinding belt 130 to rotate in the opposite direction, and set a reversible motor 430 to drive the grinding assembly 100 to move back and forth up and down, so that the grinding assembly 100 can be ground in multiple directions and dimensions, which not only improves the grinding efficiency, but also ensures the grinding uniformity, and at the same time greatly improves the grinding accuracy and grinding quality.

[0084] The specific working process of the surface impurity treatment device for automobile leaf spring provided by the present invention is described in combination with the above embodiments:

[0085] After the grinding assembly 100 is inserted into the mounting hole to be ground on the automobile leaf spring 700, the first motor 200 is started to drive the grinding assembly 100 to rotate as a whole. At the same time, the second motor 140 is started to drive the first rotating shaft 110 to rotate, and the first rotating shaft 110 drives the elastic grinding belt 130 to rotate. In addition, the reversible motor 430 is started to drive the grinding assembly 100 to move up and down in a small range.

[0086] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A device for treating impurities on the surface of a leaf spring of an automobile, characterized in that: include: The grinding assembly comprises a first rotating shaft, a second rotating shaft and an elastic grinding belt, wherein the elastic grinding belt is sleeved on the first rotating shaft and the second rotating shaft; wherein: A plurality of annular protrusions are formed on the side wall surface of the second rotating shaft at intervals in the axial direction, and the area where the elastic grinding belt contacts the annular protrusions is squeezed and protrudes outward; A first motor, connected to the grinding assembly, for driving the grinding assembly to rotate as a whole; The processing platform is arranged below the grinding assembly.

2. The device for treating impurities on the surface of a leaf spring for an automobile according to claim 1, characterized in that: The grinding assembly also includes: A second motor is disposed above the first rotating shaft and connected to the first rotating shaft; The rotation of the second motor drives the first rotating shaft to rotate, thereby driving the elastic grinding belt to rotate; wherein the rotation direction of the second motor is opposite to that of the first motor.

3. The surface impurity treatment device for automobile leaf spring according to claim 2, characterized in that: A plurality of protrusions are formed at intervals on the inner wall surface of the elastic grinding belt; a plurality of first grooves are formed on the side wall of the first rotating shaft, and the shapes of the first grooves are adapted to the protrusions; and the distance between every two circumferentially adjacent first grooves is twice the distance between every two circumferentially adjacent protrusions.

4. The device for treating impurities on the surface of a leaf spring for an automobile according to claim 3, characterized in that: The grinding assembly also includes: A connecting rod, one end of which extends outwardly in a radial direction to form a mounting plate, and the mounting plate is connected to the first motor; the other end of which extends outwardly in a radial direction to form a mounting frame, and the mounting frame is formed with a first through slot and a second through slot opposite to each other; The first through slot and the second through slot are provided with a first sliding block and a second sliding block which can slide respectively; the first rotating shaft and the second rotating shaft are respectively provided on the first sliding block and the second sliding block; The first sliding block and the second sliding block are further provided with a first spring and a second spring respectively on the side walls facing the connecting rod.

5. The device for treating impurities on the surface of a leaf spring for an automobile according to claim 4, characterized in that: The grinding assembly also includes: Two tensioning rollers are arranged opposite to each other; the two tensioning rollers are arranged inside the elastic grinding belt, and support the elastic grinding belt together with the first rotating shaft and the second rotating shaft.

6. The device for treating impurities on the surface of a leaf spring for an automobile according to claim 5, characterized in that: The mounting frame is also formed with a third through slot and a fourth through slot opposite to each other, and the third through slot and the fourth through slot are perpendicular to the first through slot and the second through slot; The two tensioning rollers are slidably disposed in the third through slot and the fourth through slot, respectively.

7. The device for treating impurities on the surface of a leaf spring for an automobile according to claim 6, characterized in that: The grinding assembly also includes: A fixing ring is sleeved on the connecting rod and is located above the mounting frame; two sleeves are formed on the side wall of the fixing ring, and a third spring is respectively arranged in the two sleeves; Two connecting rings are respectively sleeved on the two tensioning rollers; two sleeve rods are respectively formed on the side walls of the two connecting rings, and the two sleeve rods extend into the two sleeves respectively; One end of each of the third springs abuts against the bottom surface of one of the sleeves, and the other end abuts against the end surface of one of the sleeve rods.

8. The device for treating impurities on the surface of a leaf spring for an automobile according to claim 5, characterized in that: A plurality of second grooves are formed at intervals on the side wall of each tensioning roller, and the shape of the second grooves is adapted to the protrusion; wherein the distance between every two adjacent second grooves is consistent with the distance between every two adjacent protrusions.

9. The device for treating impurities on the surface of a leaf spring for an automobile according to claim 1, characterized in that: Also includes: A screw rod assembly is arranged on the processing platform; A lifting platform, sleeved on the screw rod assembly; And the lifting platform is configured to move up and down along the screw rod assembly; A connecting arm has one end mounted on the lifting platform and the other end connected to the first motor.

10. The device for treating impurities on the surface of a leaf spring for an automobile according to claim 9, characterized in that: The screw assembly includes: A screw rod, a side wall of which is formed with threads; At least one sliding rod, arranged parallel to the screw rod; A reversible motor connected to the lead screw; A threaded hole and at least one through hole are formed on the lifting platform, the screw rod is inserted into the threaded hole, and at least one sliding rod is inserted into at least one through hole.

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