A polishing device for metal products

Abstract

The present invention relates to the technical field of metal product polishing, and discloses a polishing device for metal products, including a polishing table, a moving component and a polishing box. The moving component and the polishing box are arranged on the polishing table. The first moving pipe and the second moving pipe in the moving component are both fixedly arranged on the polishing table, and the polishing box is arranged on one side of the first moving pipe and the second moving pipe and is also fixedly arranged on the polishing table. By providing a second moving groove on the inner wall of one side of the first moving groove, when the third connecting rod slides at the third moving station of the second moving groove, the moving block can be effectively deflected in angle, thereby completing the polishing effect on the front arc surface of the arc-shaped metal product. Moreover, when the third connecting rod slides in the first moving groove, the connecting gear can also be engaged with the first rack or the second rack, thereby driving the moving block to rotate, so as to complete the polishing effect on the two side arc surfaces of the arc-shaped metal product.

Description

Technical Field

[0001] The present invention relates to the technical field of metal product polishing, and particularly to a polishing device for metal products. Background Technique

[0002] Metal product polishing is a surface finishing method that uses various abrasives to produce a shiny and reflective surface. The main purpose of metal polishing is to remove surface defects generated during the manufacturing process. Moreover, metal product polishing can not only enhance the appearance of metal components, but also protect the parts and promote better performance over time.

[0003] The types of metal products are diverse, so the processing equipment required for them is also different. Especially for arc-shaped metal products such as hand-held shovels, their front ends not only have arc-shaped surfaces, but also have corresponding arc-shaped surfaces on both sides. Before packaging and processing such arc-shaped metal products, it is generally necessary to use a polishing device to polish and grind the surfaces of such arc-shaped metal products to make them smooth and flat. However, in the existing technology, the processing machines for such arc-shaped metal products have low polishing efficiency and low polishing accuracy, thus reducing the polishing quality and bringing inconvenience to the users.

[0004] Therefore, it does not meet the existing requirements, and for this reason, we propose a polishing device for metal products. Summary of the Invention

[0005] The present invention provides a polishing device for metal products, which has beneficial effects and solves the problems mentioned in the above background technique.

[0006] The present invention provides the following technical solution: A polishing device for metal products, including a polishing table, a moving component, and a polishing box. The moving component and the polishing box are arranged on the polishing table. The first moving pipe and the second moving pipe in the moving component are both fixedly arranged on the polishing table, and the polishing box is arranged on one side of the first moving pipe and the second moving pipe and is also fixedly arranged on the polishing table;

[0007] A fixed connection is formed between the first moving pipe and the second moving pipe. A first moving groove is opened at the inner wall on one side of the first moving pipe and the second moving pipe, and a second moving groove is further opened at the inner wall on one side of the first moving groove. Connecting through grooves are opened on the surfaces of the first moving pipe and the second moving pipe close to the polishing box.

[0008] As an optional solution of a polishing device for metal products according to the present invention, wherein: A moving block is arranged inside the first moving pipe. A rotating connection is formed between the side surface of the moving block close to the first moving groove and a rotating block. The rotating block is fixedly arranged at one end of a fourth connecting rod, and the other end of the fourth connecting rod is fixedly arranged on a connecting block.

[0009] As an alternative embodiment of the polishing device for metal products according to the present invention, wherein: the connecting block is slidably disposed inside the chute formed in the first moving groove, a connecting torsion spring is further disposed between the moving block and the connecting block, and the connecting torsion spring is sleeved on the fourth connecting rod.

[0010] As an alternative embodiment of the polishing device for metal products according to the present invention, wherein: a connecting ring groove is further formed on the surface of the connecting block away from the moving block, one end of the first connecting rod is rotatably disposed inside the connecting ring groove, and the other end of the first connecting rod is fixedly connected to the connecting gear. Both the connecting block and the connecting gear are sleeved on the third connecting rod. An accommodating through groove is further formed inside the connecting block. One end of the third connecting rod is slidably disposed inside the second moving groove through a ball, and the ball disposed on the third connecting rod is also fixedly connected to the second connecting rod. A connecting sleeve is movably sleeved on the second connecting rod.

[0011] As an alternative embodiment of the polishing device for metal products according to the present invention, wherein: the other end of the third connecting rod is slidably disposed inside the fourth connecting rod, a moving slider is further slidably connected to the top surface of the third connecting rod, one end of a connecting rotating rod is rotatably disposed on the moving slider, the other end of the connecting rotating rod is rotatably disposed on the moving block, and a first connecting through groove is formed in the fourth connecting rod corresponding to the position of the connecting rotating rod. The moving slider is slidably disposed inside the first connecting through groove.

[0012] As an alternative embodiment of the polishing device for metal products according to the present invention, wherein: an airbag is further disposed inside the fourth connecting rod, one end of the airbag is in contact with the third connecting rod, the airbag is also connected to one end of a trachea, and the other end of the trachea is connected to a first connecting air groove. The first connecting air groove is formed inside the moving block, and both ends of the first connecting air groove are respectively connected to corresponding second connecting air grooves.

[0013] As an alternative embodiment of the polishing device for metal products according to the present invention, wherein: the second connecting air groove is formed inside the moving block, a piston plate is slidably disposed inside the second connecting air groove, the piston plate is fixedly connected to one end of the fifth connecting rod, and the other end of the fifth connecting rod is fixedly connected to a corresponding positioning clamping plate.

[0014] As an alternative embodiment of the polishing device for metal products according to the present invention, wherein: the positioning clamping plate is disposed inside an accommodating hole formed in the moving block, a connecting spring is further sleeved on the fifth connecting rod, and both ends of the connecting spring are respectively fixedly connected to the second connecting air groove and the piston plate.

[0015] As an alternative solution of the polishing device for metal products according to the present invention, wherein: a plurality of first racks and second racks are further arranged inside the first moving groove, the first racks are fixedly arranged on the bottom surface of the first moving groove, the second racks are fixedly arranged on the top surface of the first moving groove, and the first racks and the second racks are arranged in a staggered manner, and a limiting plate is further arranged on the second moving groove.

[0016] As an alternative solution of the polishing device for metal products according to the present invention, wherein: a driving rotating rod and a driven rotating rod are rotatably arranged inside the polishing box, and a polishing belt is arranged on the driving rotating rod and the driven rotating rod in a transmission manner.

[0017] The present invention has the following beneficial effects:

[0018] For the polishing device for metal products, by providing a second moving groove on one inner wall of the first moving groove, not only can the third connecting rod effectively deflect the moving block when sliding at the third moving station of the second moving groove, so as to complete the polishing effect on the front arc surface of the arc-shaped metal product, but also when the third connecting rod slides in the first moving groove, the connecting gear can be engaged with the first rack or the second rack, so as to drive the moving block to rotate accordingly, so as to effectively complete the polishing effect on the two arc surfaces of the arc-shaped metal product.

[0019] 2. For the polishing device for metal products, by further providing a first moving station and a second moving station inside the second moving groove, when the third connecting rod moves from the first moving station to the second moving station, the third connecting rod will also complete the extrusion of the air bag inside the fourth connecting rod, so that the positioning clamp plate arranged inside the moving block can complete the positioning and clamping of the arc-shaped metal product to be polished during the moving and transporting process, so that the arc-shaped metal product to be polished can be stably carried out whether during the moving and transporting process or during the subsequent polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the moving block of the present invention.

[0022] Figure 3 It is a schematic diagram of a partial cross-section of the moving block of the present invention.

[0023] Figure 4 For the present invention Figure 3 The enlarged schematic diagram of part A.

[0024] Figure 5 For the present invention Figure 3 The enlarged schematic diagram of part B.

[0025] Figure 6 Schematic diagram of the connection structure between the connection block and the connection gear of the present invention.

[0026] Figure 7 Schematic diagram of the sectional structure of the local connection block of the present invention.

[0027] Figure 8 Schematic diagram of the longitudinal sectional structure of the local second moving pipe of the present invention.

[0028] Figure 9 Schematic diagram of the transverse structure of the local second moving pipe of the present invention.

[0029] Figure 10 Schematic diagram of the polishing box structure of the present invention.

[0030] In the figure: 1, polishing table; 2, moving assembly; 3, polishing box;

[0031] 201, first moving pipe; 202, second moving pipe; 203, moving slider; 204, first connecting through groove; 205, connecting ring groove; 206, first connecting rod; 207, first moving groove; 208, second moving groove; 209, moving block; 210, second connecting through groove; 211, connecting sleeve; 212, second connecting rod; 213, connecting rotating rod; 214, accommodating hole; 215, connecting block; 216, connecting gear; 217, third connecting rod; 218, fourth connecting rod; 219, connecting torsion spring; 220, accommodating through groove; 221, fifth connecting rod; 222, connecting spring; 223, piston plate; 224, first connecting air groove; 225, second connecting air groove; 226, airbag; 227, air pipe; 228, rotating block; 229, positioning clamping plate; 230, first rack; 231, second rack; 232, limiting plate;

[0032] 301, driving rotating rod; 302, driven rotating rod; 303, polishing belt. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1, please refer to Figures 1 - 4, A polishing device for metal products, comprising a polishing table 1, a moving component 2 and a polishing box 3. The moving component 2 and the polishing box 3 are arranged on the polishing table 1. The first moving pipe 201 and the second moving pipe 202 in the moving component 2 are both fixedly arranged on the polishing table 1, while the polishing box 3 is arranged on one side of the first moving pipe 201 and the second moving pipe 202 and is also fixedly arranged on the polishing table 1;

[0035] A fixed connection is formed between the first moving pipe 201 and the second moving pipe 202. A first moving groove 207 is opened at the inner wall on one side of the first moving pipe 201 and the second moving pipe 202. A second moving groove 208 is also opened at the inner wall on one side of the first moving groove 207. Second connection through grooves 210 are opened on the surfaces of the first moving pipe 201 and the second moving pipe 202 close to the polishing box 3.

[0036] A moving block 209 is arranged inside the first moving pipe 201. A rotating connection is formed between the surface of the moving block 209 close to the first moving groove 207 and a rotating block 228. The rotating block 228 is fixedly arranged at one end of a fourth connecting rod 218, and the other end of the fourth connecting rod 218 is fixedly arranged on a connecting block 215.

[0037] The connecting block 215 is slidably arranged inside the chute opened in the first moving groove 207. A connecting torsion spring 219 is also arranged between the moving block 209 and the connecting block 215, and the connecting torsion spring 219 is sleeved on the fourth connecting rod 218.

[0038] A connecting ring groove 205 is also opened on the surface of the connecting block 215 away from the moving block 209. One end of a first connecting rod 206 is rotatably arranged inside the connecting ring groove 205, and a fixed connection is formed between the other end of the first connecting rod 206 and a connecting gear 216. Both the connecting block 215 and the connecting gear 216 are sleeved on a third connecting rod 217. An accommodating through groove 220 is also opened inside the connecting block 215. One end of the third connecting rod 217 is slidably arranged inside the second moving groove 208 through a ball. The ball arranged on the third connecting rod 217 is also fixedly connected to a second connecting rod 212, and a connecting sleeve 211 is movably sleeved on the second connecting rod 212.

[0039] The other end of the third connecting rod 217 is slidably arranged inside the fourth connecting rod 218. A moving slider 203 is also slidably connected to the top surface of the third connecting rod 217. One end of a connecting rotating rod 213 is rotatably arranged on the moving slider 203, and the other end of the connecting rotating rod 213 is rotatably arranged on the moving block 209. A first connection through groove 204 is also opened at the position of the fourth connecting rod 218 corresponding to the connecting rotating rod 213, and the moving slider 203 is slidably arranged inside the first connection through groove 204.

[0040] An airbag 226 is also provided inside the fourth connecting rod 218. One end of the airbag 226 contacts the third connecting rod 217. The airbag 226 is also connected to one end of an air pipe 227. The other end of the air pipe 227 is connected to the first connecting air groove 224. The first connecting air groove 224 is opened inside the moving block 209, and both ends of the first connecting air groove 224 are respectively connected to the corresponding second connecting air grooves 225.

[0041] The second connecting air groove 225 is opened inside the moving block 209. A piston plate 223 is slidably arranged inside the second connecting air groove 225. The piston plate 223 is fixedly connected to one end of the fifth connecting rod 221. The other end of the fifth connecting rod 221 is fixedly connected to the corresponding positioning clamping plate 229.

[0042] The positioning clamping plate 229 is arranged inside the receiving hole 214. The receiving hole 214 is opened on the moving block 209. A connecting spring 222 is also sleeved on the fifth connecting rod 221. Both ends of the connecting spring 222 are respectively fixedly connected to the second connecting air groove 225 and the piston plate 223.

[0043] In this embodiment: When the user is about to polish the arc-shaped metal product, first, the arc-shaped metal product to be polished needs to be placed inside the receiving hole 214 opened inside the moving block 209. And since the second connecting through grooves 210 are opened on both the first moving pipe 201 and the second moving pipe 202, the arc-shaped metal product placed inside the receiving hole 214 can be lapped on the second connecting through grooves 210. And this setting is also to prevent the arc-shaped metal product from slipping before being fixed;

[0044] After the arc-shaped metal product is placed, at this time, the user can start the external hydraulic rod fixedly connected to the connecting sleeve 211. Since the connecting sleeve 211 is movably sleeved on the second connecting rod 212, and the second connecting rod 212 is fixedly connected to the third connecting rod 217, and the third connecting rod 217 is slidably arranged inside the fourth connecting rod 218, and the fourth connecting rod 218 is rotatably arranged on the moving block 209 through the rotating block 228, so when the connecting sleeve 211 moves, the second connecting rod 212 will also drive the moving block 209 to move correspondingly inside the first moving pipe 201;

[0045] Since the moving block 209 is initially arranged inside the first moving pipe 201, and the first moving pipe 201 and the second moving pipe 202 are fixedly connected, and the accommodating cavities opened inside are also interconnected, this makes the moving block 209 gradually enter the second moving pipe 202 as the moving block 209 moves;

[0046] Since the third connecting rod 217 is slidably arranged inside the second moving groove 208 through balls, and the second moving groove 208 is divided into a first moving station, a second moving station and a third moving station, and the moving block 209 is located inside the first moving station when moving inside the first moving tube 201, and the second moving station further approaches the moving block 209 on the basis of the first moving station, and the second moving station is opened inside the second moving tube 202, this makes that when the moving block 209 moves from the first moving tube 201 to the inside of the second moving tube 202, at this time, the third connecting rod 217 will move in the direction of the moving block 209 under the restriction of the second moving station of the second moving groove 208;

[0047] Since the other end of the third connecting rod 217 is slidably arranged inside the fourth connecting rod 218, and an airbag 226 is also arranged inside the fourth connecting rod 218, and the other end of the third connecting rod 217 is in contact with the airbag 226 at the initial position, this makes that when the third connecting rod 217 moves, the third connecting rod 217 will correspondingly squeeze the airbag 226. It should be noted that hard surfaces are arranged at both ends of the airbag 226, and this setting is to prevent the airbag 226 from being locally deformed after being squeezed by the third connecting rod 217, thereby affecting the subsequent exhaust of the airbag 226;

[0048] When the airbag 226 is squeezed by the movement of the third connecting rod 217, at this time, the airbag 226 will discharge the gas inside through the air pipe 227 into the first connecting air groove 224. Since the first connecting air groove 224 is also respectively connected to two second connecting air grooves 225, this makes that the gas discharged from the inside of the airbag 226 will respectively enter the two second connecting air grooves 225;

[0049] Since a piston plate 223 is arranged inside each second connecting air groove 225, and the piston plate 223 is fixedly connected to the positioning clamping plate 229 through the fifth connecting rod 221, and the positioning clamping plate 229 is arranged inside the accommodating hole 214, and one end of the arc-shaped metal product to be polished is placed inside the accommodating hole 214, this makes that as the gas continuously enters the second connecting air groove 225, the piston plate 223 will move in the direction of the accommodating hole 214, thereby driving the positioning clamping plate 229 to complete the positioning and clamping effect on the arc-shaped metal product to be polished;

[0050] It should be noted that by using the positioning clamping plate 229 to position and clamp the arc-shaped metal product to be polished, on the one hand, it is to fix the arc-shaped metal product to be polished, and on the other hand, it is to effectively make the arc-shaped metal product to be polished rotate synchronously when the moving block 209 rotates subsequently;

[0051] In the above - mentioned manner, not only is the positioning and clamping of the arc - shaped metal product to be polished completed during the process of moving and transporting, but also this clamping is realized by the movement of the positioning clamping plate 229, thus effectively improving the stability of the arc - shaped metal product to be polished. As a result, the arc - shaped metal product to be polished can be stably carried out whether during the process of moving and transporting or during subsequent polishing.

[0052] Embodiment Two is an improvement made on the basis of Embodiment One. According to Figures 1 - 10 As shown, a number of first racks 230 and second racks 231 are further arranged inside the first moving groove 207. The first racks 230 are fixedly arranged on the bottom surface of the first moving groove 207, the second racks 231 are fixedly arranged on the top surface of the first moving groove 207, and the first racks 230 and the second racks 231 are arranged in a staggered manner. A limiting plate 232 is also arranged on the second moving groove 208.

[0053] A driving rotating rod 301 and a driven rotating rod 302 are rotatably arranged inside the polishing box 3, and a polishing belt 303 is arranged on the driving rotating rod 301 and the driven rotating rod 302 in a transmission manner.

[0054] In this embodiment: Since the second moving groove 208 opened on the second moving pipe 202 is also provided with a third moving station, and the third moving station further approaches the direction of the moving block 209 on the basis of the second moving station, and after the third connecting rod 217 enters the inside of the second moving pipe 202, it is located inside the second moving station of the second moving groove 208;

[0055] Therefore, when the third connecting rod 217 enters the inside of the third moving station from the second moving station, at this time, the third connecting rod 217 will move again in the direction of the moving block 209. On the one hand, since the third connecting rod 217 has moved a certain distance when following the moving block 209 from the first moving pipe 201 into the second moving pipe 202 and has completed the extrusion of the airbag 226. On the other hand, since a moving slider 203 is also slidably arranged on the third connecting rod 217, and when the third connecting rod 217 makes the first - stage movement, the moving slider 203 is slidably arranged inside the connecting sliding groove opened on the top of the third connecting rod 217. Therefore, even if the third connecting rod 217 makes a corresponding movement, the moving slider 203 will only slide inside the first connecting through - groove 204, but it will not move itself. After the third connecting rod 217 completes the first - stage movement, at this time, the moving slider 203 will also make the maximum - distance movement inside the connecting sliding groove. Therefore, if the third connecting rod 217 moves again, the moving slider 203 will move correspondingly following the third connecting rod 217;

[0056] Since one end of the connecting rotating rod 213 is rotatably arranged on the moving slider 203, and the other end of the connecting rotating rod 213 is rotatably arranged on the moving block 209, when the third connecting rod 217 moves under the restriction of the third moving station of the second moving groove 208, the moving slider 203 will drive the connecting rotating rod 213 to make a corresponding angular offset, and then drive the moving block 209 to make a corresponding angular offset effect. After the angle of the moving block 209 is offset, since the arc-shaped metal product is positioned and clamped by the positioning clamping plate 229, the arc-shaped metal product will also make a corresponding offset effect under the offset action of the moving block 209, so that the polishing belt 303 can complete the polishing effect on the front arc surface of the arc-shaped metal product. At the same time, a torsion spring is arranged on the moving block 209 and the rotating block 228 to maintain the initial stability of the moving block 209;

[0057] It should be noted that a plurality of first racks 230 and second racks 231 are further arranged on the first moving groove 207. The first rack 230 is fixedly arranged on the bottom surface of the first moving groove 207, the second rack 231 is fixedly arranged on the top surface of the first moving groove 207, and the first rack 230 and the second rack 231 are arranged in a staggered manner. When the third connecting rod 217 slides inside the first moving groove 207, the connecting gear 216 sleeved on the third connecting rod 217 will mesh with the first rack 230 or the second rack 231 to drive the third connecting rod 217 to make a corresponding rotating effect. At the same time, since the first rack 230 and the second rack 231 are arranged in a staggered manner and are respectively arranged on the bottom and top surfaces of the first moving groove 207, this also makes the rotation of the third connecting rod 217 not only intermittent, but also in the opposite rotation direction;

[0058] It should be noted that on the one hand, the connecting block 215 is slidably arranged in the chute opened in the first moving groove 207 through a corresponding slider, and a receiving through groove 220 for the third connecting rod 217 to rotate is further opened inside the connecting block 215. This makes it possible that even if the third connecting rod 217 makes a corresponding movement, the connecting block 215 will only slide on the corresponding chute and will not move correspondingly with the third connecting rod 217;

[0059] On the other hand, a connecting ring groove 205 is also formed on the surface of the connecting block 215 close to the connecting gear 216, and a first connecting rod 206 is slidably arranged inside the connecting ring groove 205. The first connecting rod 206 is fixedly arranged on the connecting gear 216. This enables the connecting gear 216 to drive the square third connecting rod 217 to rotate. However, when the third connecting rod 217 moves, this kind of limit can also ensure that the connecting gear 216 does not move accordingly. This setting is to ensure that the connecting gear 216 meshes with a number of first racks 230 and second racks 231 formed on the first moving groove 207. If the connecting gear 216 moves synchronously with the third connecting rod 217, it is very likely that the connecting gear 216 will shift from the first rack 230 or the second rack 231, resulting in the inability to drive the moving block 209 to rotate accordingly later;

[0060] After the third connecting rod 217 rotates, since the third connecting rod 217 is slidably arranged inside the fourth connecting rod 218, and the fourth connecting rod 218 is rotatably connected to the moving block 209 through a rotating block 228, the moving block 209 will also rotate synchronously with the third connecting rod 217 under this connection. After the moving block 209 rotates, the arc-shaped metal product arranged inside the moving block 209 and fixed by the positioning clamping plate 229 will also rotate accordingly. This method also enables the polishing belt 303 to polish the arc-shaped surfaces on both sides of the arc-shaped metal product, thereby improving the polishing efficiency of the arc-shaped metal product;

[0061] It should be noted that since a connecting torsion spring 219 is also sleeved on the fourth connecting rod 218, when the moving block 209 rotates accordingly, the reset elastic force of the connecting torsion spring 219 can effectively reset the moving block 209, so that the moving block 209 can complete the rotation effect in the opposite direction during the continuous movement;

[0062] It should be noted that since a limiting plate 232 is also arranged on the second moving groove 208, the limiting plate 232 is provided to prevent the third connecting rod 217 from separating from the second moving groove 208 during the movement, so as to avoid affecting the rotation or angular deviation effect of the moving block 209;

[0063] Through the above settings, when the third connecting rod 217 slides inside the third moving station of the second moving groove 208, the moving block 209 can be effectively deflected at an angle, thereby completing the polishing effect on the front arc surface of the arc-shaped metal product. Moreover, when the third connecting rod 217 slides at the second moving station of the second moving groove 208, the moving block 209 can also rotate accordingly, thereby effectively completing the polishing effect on the arc-shaped surfaces on both sides of the arc-shaped metal product.

[0064] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0065] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A polishing device for metal products, comprising a polishing table (1), a moving component (2) and a polishing box (3), characterized in that: The polishing table (1) is provided with a moving assembly (2) and a polishing box (3); the first moving tube (201) and the second moving tube (202) in the moving assembly (2) are both fixedly arranged on the polishing table (1); the polishing box (3) is arranged on one side of the first moving tube (201) and the second moving tube (202); and the polishing box (3) is also fixedly arranged on the polishing table (1); The first movable tube (201) and the second movable tube (202) are fixedly connected, a first movable groove (207) is provided on the inner wall of one side of the first movable tube (201) and the second movable tube (202), a second movable groove (208) is also provided on the inner wall of one side of the first movable groove (207), and a connecting through groove (210) is provided on the surface of one side of the first movable tube (201) and the second movable tube (202) close to the polishing box (3); A moving block (209) is arranged inside the first moving tube (201), and a surface of one side of the moving block (209) close to the first moving groove (207) is rotatably connected to a rotating block (228), the rotating block (228) is fixedly arranged on one end of a fourth connecting rod (218), and the other end of the fourth connecting rod (218) is fixedly arranged on a connecting block (215); A connecting ring groove (205) is also provided on a surface of one side of the connecting block (215) away from the moving block (209), one end of the first connecting rod (206) is rotatably arranged inside the connecting ring groove (205), and the other end of the first connecting rod (206) is fixedly connected to the connecting gear (216), the connecting block (215) and the connecting gear (216) are both sleeved on the third connecting rod (217), and a receiving through groove (220) is also provided inside the connecting block (215), one end of the third connecting rod (217) is slidably arranged inside the second moving groove (208) via a ball bearing, the ball bearing arranged on the third connecting rod (217) is also fixedly connected to the second connecting rod (212), and a connecting sleeve (211) is movably sleeved on the second connecting rod (212).

2. A polishing device for metal products according to claim 1, characterized in that: The connecting block (215) is slidably arranged inside a sliding groove opened in the first moving groove (207), and a connecting torsion spring (219) is also arranged between the moving block (209) and the connecting block (215), and the connecting torsion spring (219) is sleeved on the fourth connecting rod (218).

3. A polishing device for metal products according to claim 1, characterized in that: The other end of the third connecting rod (217) is slidably arranged inside the fourth connecting rod (218); the top surface of the third connecting rod (217) is also slidably connected to a movable slider (203); one end of a connecting rotating rod (213) is rotatably arranged on the movable slider (203); the other end of the connecting rotating rod (213) is rotatably arranged on the movable block (209); a first connecting through groove (204) is also provided at a position of the fourth connecting rod (218) corresponding to the connecting rotating rod (213); and the movable slider (203) is slidably arranged in the first connecting through groove (204).

4. A polishing device for metal products according to claim 3, characterized in that: An airbag (226) is also provided inside the fourth connecting rod (218), one end of the airbag (226) is in contact with the third connecting rod (217), the airbag (226) is also connected to one end of the air pipe (227), the other end of the air pipe (227) is connected to the first connecting air groove (224), the first connecting air groove (224) is opened inside the moving block (209), and the two ends of the first connecting air groove (224) are respectively connected to the corresponding second connecting air grooves (225).

5. A polishing device for metal products according to claim 4, characterized in that: The second connecting air groove (225) is provided inside the moving block (209), a piston plate (223) is slidably arranged inside the second connecting air groove (225), the piston plate (223) is fixedly connected to one end of the fifth connecting rod (221), and the other end of the fifth connecting rod (221) is fixedly connected to a corresponding positioning clamping plate (229).

6. A polishing device for metal products according to claim 5, characterized in that: The positioning clamping plate (229) is arranged inside the accommodating hole (214), and the accommodating hole (214) is opened on the moving block (209). The fifth connecting rod (221) is also sleeved with a connecting spring (222), and the two ends of the connecting spring (222) are respectively fixedly connected to the second connecting air groove (225) and the piston plate (223).

7. A polishing device for metal products according to claim 6, characterized in that: A plurality of first racks (230) and second racks (231) are also arranged inside the first movable groove (207); the first racks (230) are fixedly arranged on the bottom surface of the first movable groove (207); the second racks (231) are fixedly arranged on the top surface of the first movable groove (207); the first racks (230) and the second racks (231) are staggered; and a limiting plate (232) is also arranged on the second movable groove (208).

8. The polishing device for metal products according to claim 1, characterized in that: The polishing box (3) is internally provided with an active rotating rod (301) and a driven rotating rod (302) for rotation, and a polishing belt (303) is provided on the active rotating rod (301) and the driven rotating rod (302) for transmission.

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