Polishing machine

Abstract

The polishing machine comprises a fixing frame, a lifting mechanism is connected to the fixing frame and a lifting plate in a matched mode, a plurality of reversing boxes are installed on the lifting plate at equal intervals, an external pipe is rotationally connected into each reversing box, an internal pipe is rotationally connected into the external pipe, and the internal pipe is rotationally connected with the lifting plate. The grinding mechanism adopts a reverse rotation mechanism of an outer pipe and an inner pipe in a reverse box, simultaneous grinding of the inner wall and the outer wall of the metal bottle cap is achieved, the grinding efficiency is effectively improved, a polishing grinding ring on an outer disc and a grinding block on an inner disc grind the outer wall and the inner wall of the bottle cap correspondingly, and the grinding comprehensiveness and effect are ensured; the whole grinding process is further optimized by processing the upper end face of the bottle cap through the polishing and grinding disc, the grinding block can be flexibly adjusted through the design of the expansion spring and the annular sleeve, the inner wall of the bottle cap is effectively ground, batch processing can be conducted through the configuration of the multiple reversing boxes, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of polishing equipment, and more specifically, to a polishing machine. Background Art

[0002] Metal bottle caps are important components widely used in the packaging industry such as food, beverages, and medicines. Their main function is to ensure the sealing and safety of packaging containers. Metal bottle caps are usually made of metal materials such as aluminum alloy, stainless steel or tinplate, and have good corrosion resistance, mechanical strength and sealing performance. In the current metal bottle cap production technology, there are significant problems in the efficiency and quality control of the polishing and trimming links of the bottle cap edges. The traditional polishing and trimming method usually processes the bottle caps one by one on a plate chain, which is inefficient in large-scale production. Due to the huge production volume of bottle caps, this one-by-one processing method limits the efficiency of the entire production process. Workers or automated equipment on the production line must devote a lot of time to processing each bottle cap, which not only prolongs the production cycle, but also increases manpower and equipment costs, thereby affecting the market competitiveness of the product.

[0003] In addition, the existing polishing and trimming technology also has shortcomings in quality control. Conventional polishing and trimming processes can often only polish and trim one side of the bottle cap, ignoring the fact that burrs may appear on both ends of the bottle cap. During the bottle cap molding process, burrs may be formed in multiple positions due to the properties of the metal material and the influence of the mold. Single-sided polishing and trimming cannot completely remove these burrs, resulting in unsatisfactory polishing and trimming effects, which not only affects the appearance quality of the bottle cap, but may also cause safety problems in actual use, such as scratching the user's hands or affecting the sealing effect between the bottle cap and the bottle body. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the problems existing in the prior art, the present invention provides a polishing machine to solve the technical problems mentioned in the background technology.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a polishing machine, comprising a fixed frame, the fixed frame is installed on the external equipment, the fixed frame is provided with a grinding mechanism, the grinding mechanism comprises a lifting mechanism, a lifting plate, a reversing box, an external tube, an internal tube, an external disk, a polishing grinding ring, a polishing grinding disk, an internal disk, an expansion spring, a grinding block, an annular sleeve and a fixing mechanism, the lifting mechanism is connected to the fixed frame and the lifting plate, a plurality of reversing boxes are provided, and the plurality of reversing boxes are respectively and equidistantly installed on the lifting plate, and each of the reversing boxes has a reversing mechanism. The outer tube is movably connected to the outer tube, and the outer tube is rotatably connected to the inner tube. The outer disk is coaxially installed on the outer tube, the polishing ring is installed on the lower end surface of the outer disk, the polishing disk is coaxially installed on the inner tube, and the polishing disk is fitted on the lower end surface of the outer disk, the inner disk is installed on the polishing disk, and a plurality of expansion springs are equidistantly installed on the outer wall of the inner disk, a polishing block is respectively installed on each expansion spring, and the plurality of polishing blocks are respectively slidably fitted on the polishing disk, an annular sleeve is respectively connected between every two of the polishing blocks, and the fixing mechanism is installed on a fixing frame.

[0006] The present invention is further configured such that each of the reversing boxes is respectively provided with a polishing and grinding motor, an intermediate gear is provided on the protruding end of the polishing and grinding motor, an external gear is coaxially provided on the external tube, an internal gear is coaxially provided on the internal tube, the internal gear and the external gear are synchronously meshed with the intermediate gear at the upper and lower ends respectively. This design drives the intermediate gear through the polishing and grinding motor, thereby driving the external gear and the internal gear to rotate in the opposite direction, thereby realizing the reverse movement of the external tube and the internal tube, so that the polishing and grinding ring and the grinding block can simultaneously reversely grind the inner and outer walls of the bottle cap, thereby improving the grinding efficiency and effect, while reducing the displacement of the bottle cap caused by rotation during the grinding process, thereby ensuring the accuracy of the grinding.

[0007] The present invention is further configured as follows: the lifting mechanism includes a side frame, a lifting motor, a screw and a lifting sleeve. Two side frames are provided, and the two side frames are respectively mounted on both sides of the fixed frame, and a lifting motor is respectively mounted on each side frame. A screw is mounted on the protruding end of the lifting motor, the screw is rotatably connected to the side frame, the lifting sleeve is threadedly connected to the screw, the lifting sleeve is slidably connected in the side frame, and the lifting plate is connected to the two lifting sleeves. This design realizes the control of the lifting sleeve by synchronously driving the screws by the lifting motors on both sides, thereby ensuring the smooth movement of the lifting plate. The design of synchronous lifting on both sides ensures that multiple metal bottle caps can be polished at the same time, which significantly improves production efficiency, and also ensures the stability and consistency of the polishing process.

[0008] The present invention is further configured as follows: the fixing mechanism includes a fixing sleeve, a guide block, a slider, a guide spring, a bonding plate and a spring. A plurality of guide blocks are provided, and the plurality of guide blocks are equidistantly mounted on the fixing sleeve. An oblique groove is respectively provided on both sides of each guide block, and a slider is slidably connected on the oblique groove. The upper and lower ends of the slider are respectively connected to the guide springs, and the upper and lower ends of the guide spring are respectively connected to the bonding plate, a spring is installed on the bonding plate, the spring is connected to the slider, and a plurality of friction grooves are equidistantly provided on the bonding plate. This design realizes the positioning and adjustment of the bonding plate through the combination of the guide block, the slider and the oblique groove. The use of the guide spring provides a guiding effect for the metal bottle cap, ensuring the convenience of the bottle cap during installation. The setting of the friction groove increases the contact area with the bottle cap, further improving the fixing effect. The overall design realizes an efficient, stable and adjustable bottle cap fixing function.

[0009] The present invention is further configured as follows: a transmission motor is provided on the fixed frame, a transmission chain is meshed on the protruding end of the transmission motor, a drive shaft is rotatably provided on the fixed frame, the transmission chain is meshed on the drive shaft, a conveying chain is meshed on the drive shaft, the conveying chain is rotatably connected to the fixed frame, a receiving plate is provided on the conveying chain, and the fixed sleeve is mounted on the receiving plate. This design drives the transmission chain and the conveying chain through the transmission motor, thereby realizing automatic conveyance of the fixed sleeve and improving the operation efficiency of the production line. The setting of the receiving plate provides stable support for the fixed sleeve, thereby ensuring the stability of the bottle cap during the conveying process.

[0010] The present invention is further configured such that a synchronous sleeve is slidably provided on the outer wall of the plurality of guide blocks, a plurality of transverse rods are respectively provided on each of the slide blocks, a plurality of transverse holes are equidistantly provided on the side wall of the synchronous sleeve, and the transverse rods are slidably connected in the transverse holes. This design realizes the synchronous movement of the plurality of slide blocks through the cooperation of the synchronous sleeve and the transverse rod, thereby ensuring uniform fixation of the bottle caps. The provision of the transverse holes ensures the follow-up movement of the slide blocks and the transverse rods, thereby improving the use effect.

[0011] The present invention is further configured as follows: a plurality of the synchronous sleeves are provided, and a plurality of the synchronous sleeves are respectively provided with a follower sleeve, a plurality of the follower sleeves are respectively provided with a pressure plate, a lower end face of each of the synchronous sleeves is respectively provided with a return spring, an upper end face of the fixed sleeve is provided with an annular groove, and the return spring is pressed in the annular groove. This design ensures that the bottle cap is not in a fixed state when not polished and trimmed through the cooperation of the follower sleeve and the pressure plate, thereby ensuring the convenience of loading and unloading.

[0012] The present invention is further configured as follows: adjusting rods are slidably provided on both sides of the lifting plate, nuts are threaded on the adjusting rods, the nuts are fitted on the lifting plate, a compression spring is sleeved on the adjusting rod, one end of the compression spring is connected to the adjusting rod, and the other end of the compression spring is in contact with the lower end surface of the lifting plate, and the adjusting rod is pressed on the pressure plate. This design realizes the adjustment of the height of the metal bottle cap through the cooperation of the adjusting rod and the nut, and the use of the compression spring ensures the fixing stability of the adjusting rod.

[0013] The present invention is further configured such that a bottom sleeve is respectively provided on the lower end surface of each of the fixed sleeves, a bottom rod is respectively threadedly provided on each of the bottom sleeves, a tray is provided on the bottom rod, and a hexagonal hole is provided at the axial position of the tray and the bottom rod. This design realizes the adjustment of the push plate height through the threaded connection between the bottom sleeve and the bottom rod, so it can be adjusted according to different situations. The setting of the hexagonal hole facilitates adjustment using tools, thereby improving the convenience of operation.

[0014] The present invention is further configured such that a bottom plate is provided at one end of the bottom rod away from the tray, a fixing spring is provided on the bottom plate, a fixing ring is provided on the fixing spring, and the fixing ring abuts against the lower end surface of the bottom sleeve. This design achieves the fixation of the position of the bottom rod through the cooperation of the bottom plate, the fixing spring and the fixing ring, thereby ensuring the stability after adjustment.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a polishing machine having the following beneficial effects: 1. The grinding mechanism adopts the reverse rotation mechanism of the outer tube and the inner tube of the reversing box to realize the simultaneous grinding of the inner and outer walls of the metal bottle cap, effectively improving the grinding efficiency. The polishing ring on the outer disk and the grinding block on the inner disk grind the outer wall and inner wall of the bottle cap respectively, ensuring the comprehensiveness and effect of the grinding. In addition, the treatment of the upper end surface of the bottle cap by the polishing disk further optimizes the entire grinding process. The design of the expansion spring and the annular sleeve enables the grinding block to be flexibly adjusted to effectively grind the inner wall of the bottle cap. The configuration of multiple reversing boxes can be processed in batches, which significantly improves the production efficiency.

[0016] 2. The lifting mechanism achieves precise control of the lifting sleeve through the lifting motor driven screw installed on the side frames on both sides, ensuring the smooth movement of the lifting plate. The design of double-sided synchronous lifting enables multiple metal bottle caps to be polished at the same time, thereby improving production efficiency. The design of the adjustment rod and the pressure plate allows the operator to adjust the contact position as needed, enhancing the flexibility of the equipment. The application of the compression spring provides the necessary downward force during the adjustment process, ensuring that a large fixing force is applied only during polishing. The overall design ensures an efficient and precise polishing and finishing process.

[0017] 3. The fixing mechanism achieves a firm fixation of the metal bottle cap through the combination of a fixing sleeve, a guide block and a slider. The design of the fitting plate and the spring provides moderate pressure to ensure that the bottle cap remains fixed during the grinding process. The setting of the friction groove increases the contact area with the bottle cap, further improving the fixing effect. The design of the synchronous sleeve and the follower sleeve enables multiple fixing devices to operate synchronously, improving work efficiency. The adjustable design of the bottom sleeve, the bottom rod and the tray allows the operator to adjust the height according to the bottle caps of different sizes, expanding the scope of application of the equipment. The use of the fixing spring and the fixing ring ensures the stability after adjustment. The overall design realizes an efficient, stable and adjustable bottle cap fixing function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a polishing machine in the present invention; Figure 2 It is a structural schematic diagram of the lifting mechanism and the fixing mechanism in the present invention; Figure 3 It is a schematic diagram of the structure of the lifting plate, the pressure plate and the receiving plate in the present invention; Figure 4 It is a structural schematic diagram of the reversal box in the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of a cross-sectional structure of an upper end surface; Figure 6 It is a schematic cross-sectional structure diagram of the side surface of coating 4 in the present invention; Figure 7 It is a structural schematic diagram of the fixing mechanism in the present invention; Figure 8 For the present invention Figure 7 A schematic cross-sectional structure diagram of; Fig. 9 It is a structural schematic diagram of a sliding block and a bonding plate in the present invention; Fig.10 It is a structural schematic diagram of the fixed sleeve and the guide block in the present invention; Fig.11 It is a structural schematic diagram of the synchronous sleeve in the present invention.

[0019] In the figure: 1, fixed frame; 2, lifting plate; 3, reversing box; 4, external tube; 5, internal tube; 6, external disk; 7, polishing and grinding ring; 8, polishing and grinding disk; 9, internal disk; 10, expansion spring; 11, grinding block; 12, annular sleeve; 13, polishing and grinding motor; 14, intermediate gear; 15, external gear; 16, internal gear; 17, side frame; 18, lifting motor; 19, lead screw; 20, lifting sleeve; 21, fixed sleeve; 22, guide block; 23, slider; 24, guide spring; 25, Fitting plate; 26. Spring; 27. Inclined groove; 28. Friction groove; 29. ​​Transmission motor; 30. Transmission chain; 31. Drive shaft; 32. Conveyor chain; 33. Adapter plate; 34. Synchronous sleeve; 35. Transverse rod; 36. Transverse hole; 37. Follower sleeve; 38. Pressure plate; 39. Return spring; 40. Annular groove; 41. Adjusting rod; 42. Nut; 43. Compression spring; 44. Bottom sleeve; 45. Bottom rod; 46. Tray; 47. Hexagonal hole; 48. Bottom plate; 49. Fixing spring; 50. Fixing ring. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0022] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0023] See also Figures 3 to 6 and Figures 7 to 11A polishing machine comprises a fixed frame 1, which is installed on an external device. A grinding mechanism is arranged on the fixed frame 1, and the grinding mechanism comprises a lifting mechanism, a lifting plate 2, a reversing box 3, an external tube 4, an internal tube 5, an external disk 6, a polishing and grinding ring 7, a polishing and grinding disk 8, an internal disk 9, an expansion spring 10, a grinding block 11, an annular sleeve 12 and a fixed mechanism. The lifting mechanism is connected to the fixed frame 1 and the lifting plate 2 in cooperation. A plurality of reversing boxes 3 are arranged, and the plurality of reversing boxes 3 are respectively and equidistantly installed on the lifting plate 2. Each reversing box 3 is respectively rotatably connected to the external tube 4, and the external tube 4 is rotatably connected to the internal tube 5. The external disk 6 is coaxially installed on the external tube 4. The polishing and grinding ring 7 is installed on the lower end surface of the external disk 6. The polishing and grinding disk 8 is coaxially installed On the inner tube 5, the polishing and grinding disc 8 is fitted on the lower end surface of the outer disc 6, and the inner disc 9 is installed on the polishing and grinding disc 8. A plurality of expansion springs 10 are equidistantly installed on the outer wall of the inner disc 9, and a grinding block 11 is installed on each expansion spring 10. The plurality of grinding blocks 11 are slidably fitted on the polishing and grinding disc 8, and an annular sleeve 12 is connected between every two grinding blocks 11. The fixing mechanism is installed on the fixing frame 1, and a polishing and grinding motor 13 is provided on each reversing box 3. An intermediate gear 14 is provided on the protruding end of the polishing and grinding motor 13. An external gear 15 is coaxially provided on the outer tube 4, and an internal gear 16 is coaxially provided on the inner tube 5. The internal gear 16 and the external gear 15 are synchronously meshed with the intermediate gear 14 at the upper and lower ends respectively.

[0024] Working principle: When grinding, polishing and trimming the corresponding metal bottle caps, firstly, multiple metal bottle caps are respectively installed in multiple fixed sleeves 21 through the feeding equipment. At this time, the metal bottle caps are attached to the tray 46, and the bonding plate 25 and the side wall of the metal bottle caps are not attached but are only in a limited state, and the guide spring 24 ensures that the metal bottle caps are conveniently placed between the multiple bonding plates 25. Then, when the metal bottle caps are conveyed to the coaxial position of the multiple internal disks 9, they stop. At this time, the lifting plate 2 can be driven to move downward by the lifting mechanism. Since the length of the adjusting rod 41 is greater than the length of the multiple polishing and grinding disks 8, the adjusting rod 41 on the lifting plate 2 will first press on the pressure plate 38, and then continue to compress downward. At this time, the adjusting rod 41 presses the lifting plate 2 to slide upward And the compression spring 43 is in a compressed state, then the pressure plate 38 slides downward, and multiple follower sleeves 37 are attached to the pressure plate 38, and then the synchronous sleeves 34 on the multiple follower sleeves 37 will slide downward synchronously. Since the transverse rod 35 is connected to the transverse hole 36, it will drive multiple sliders 23 to slide along the inclined groove 27. At this time, the slider 23 will shrink and slide downward along the inclined groove 27. Since the fitting plate 25 is in contact with the side wall of the metal bottle cap at this time, the spring 26 will continue to compress, thereby ensuring that the metal bottle cap is in a fixed state, and then the lifting plate 2 continues to move downward, and then the polishing and grinding ring 7 is attached to the outer wall of the metal bottle cap, and multiple grinding blocks 11 are attached to the inner wall of the metal bottle cap, and the polishing and grinding disc 8 is attached to the upper surface of the metal bottle cap. On the end surface, the three surfaces of the metal bottle cap are all in a fitted state, and then a plurality of polishing and grinding motors 13 are started. Since the intermediate gear 14 is installed on the protruding end of the polishing and grinding motor 13, the plurality of intermediate gears 14 can be driven to rotate. Since the internal gear 16 and the external gear 15 are respectively meshed on the upper and lower sides of the intermediate gear 14, the internal gear 16 and the external gear 15 will be driven to rotate in the opposite direction, so that the external tube 4 and the internal tube 5 rotate in the opposite direction. Since the external disk 6 is installed on the external tube 4, the polishing and grinding ring 7 can be driven to grind the outer wall of the metal bottle cap. At this time, the internal disk 9 rotates in the opposite direction, and the follow-up rotation can generate a large centrifugal force, which will drive the grinding block 11 to expand outward. Due to the effect of the annular sleeve 12 The connection between the multiple grinding blocks 11 can be guaranteed, and the expansion of the grinding blocks 11 is limited under the action of the expansion spring 10. At this time, the multiple grinding blocks 11 will grind the inner wall of the metal bottle cap, and then the metal bottle cap can be reversely polished inside and outside through the grinding blocks 11 and the polishing and grinding ring 7. Since the inside and outside are in reverse motion, the metal bottle cap will not rotate with the grinding, which improves the fixing effect. Then the polishing and grinding disc 8 can grind the upper end surface of the metal bottle cap, and the grinding of the three surfaces of the metal bottle cap is completed, thereby completing the finishing of the inner, outer and upper end surfaces, and multiple metal bottle caps can be trimmed through, thereby completing the edge polishing and trimming process, ensuring the polishing and trimming efficiency of the metal bottle cap.The overall running speed is improved. After the polishing and trimming is completed, the upward sliding of the synchronous sleeve 34 is guaranteed by the action of the return spring 39. At this time, since the pressure plate 38 is not in a downward pressure state after the polishing and trimming is completed, the connection between the bonding plate 25 and the metal bottle cap will be released, and then the unloading process can be carried out.

[0025] To achieve synchronous lifting, add a lifting mechanism. Figure 1 to Figure 2 The lifting mechanism includes a side frame 17, a lifting motor 18, a lead screw 19 and a lifting sleeve 20. Two side frames 17 are provided, and the two side frames 17 are respectively installed on both sides of the fixed frame 1. A lifting motor 18 is installed on each side frame 17. A lead screw 19 is installed on the protruding end of the lifting motor 18. The lead screw 19 is rotatably connected to the side frame 17. The lifting sleeve 20 is threadedly connected to the lead screw 19. The lifting sleeve 20 is slidably connected in the side frame 17, and the lifting plate 2 is connected to the two lifting sleeves 20.

[0026] Working principle: When it is necessary to move up and down, the lifting motors 18 on both sides will rotate synchronously first, and then the lead screw 19 will be driven to rotate. Since the lead screw 19 is threadedly connected to the lifting sleeve 20, and the lifting sleeve 20 is limitedly slidably connected to the side frame 17, the lifting sleeves 20 on both sides will be driven to rise and fall synchronously, thereby ensuring that multiple metal bottle caps are polished synchronously. When it is necessary to change the contact position of the adjusting rod 41 and the pressure plate 38, the compression amount of the compression spring 43 can be changed by rotating the nut 42, thereby changing the initial position of the adjusting rod 41, thereby completing the adjustment of the contact position.

[0027] See also Figures 7 to 11In order to fix the bottle cap, a fixing mechanism is added, which includes a fixing sleeve 21, a guide block 22, a slider 23, a guide spring 24, a fitting plate 25 and a spring 26. A plurality of guide blocks 22 are provided, and the plurality of guide blocks 22 are equidistantly mounted on the fixing sleeve 21. An oblique groove 27 is respectively provided on both sides of each guide block 22. The slider 23 is slidably connected to the oblique groove 27. The upper and lower ends of the slider 23 are respectively connected to the guide spring 24. The upper and lower ends of the guide spring 24 are respectively connected to the fitting plate 25. The fitting plate 25 is provided with a spring 26. The spring 26 is connected to the slider 23. A plurality of friction grooves 28 are equidistantly provided on the clamping plate 25, a transmission motor 29 is provided on the fixed frame 1, a transmission chain 30 is meshed on the extended end of the transmission motor 29, a drive shaft 31 is rotatably provided on the fixed frame 1, the transmission chain 30 is meshed on the drive shaft 31, a conveying chain 32 is meshed on the drive shaft 31, the conveying chain 32 is rotatably connected to the fixed frame 1, a receiving plate 33 is provided on the conveying chain 32, the fixed sleeve 21 is mounted on the receiving plate 33, a plurality of synchronous sleeves 34 are slidably provided on the outer wall of the guide blocks 22, a plurality of transverse rods 35 are respectively provided on each slider 23, and a plurality of lateral rods 35 are provided on the side wall of the synchronous sleeve 34. A plurality of transverse holes 36 are provided in the spacing, and the transverse rod 35 is slidably connected in the transverse hole 36. A plurality of synchronous sleeves 34 are provided, and a plurality of synchronous sleeves 34 are respectively provided with a follower sleeve 37, and a plurality of follower sleeves 37 are respectively provided with a pressure plate 38. The lower end surface of each synchronous sleeve 34 is respectively provided with a return spring 39, and an annular groove 40 is provided on the upper end surface of the fixed sleeve 21. The return spring 39 is pressed in the annular groove 40. Adjustment rods 41 are respectively slidably provided on both sides of the lifting plate 2, and a nut 42 is threaded on the adjusting rod 41. The nut 42 is attached to the lifting plate 2, and a compression spring 43 is sleeved on the adjusting rod 41. The compression spring 43 is pressed against the lifting plate 2. One end of the spring 43 is connected to the adjusting rod 41, and the other end of the compression spring 43 abuts against the lower end surface of the lifting plate 2. The adjusting rod 41 is pressed on the pressure plate 38. A bottom sleeve 44 is provided on the lower end surface of each fixing sleeve 21, and a bottom rod 45 is threadedly provided on each bottom sleeve 44. A tray 46 is provided on the bottom rod 45. A hexagonal hole 47 is provided at the axial position of the tray 46 and the bottom rod 45. A bottom plate 48 is provided at the end of the bottom rod 45 away from the tray 46. A fixing spring 49 is provided on the bottom plate 48. A fixing ring 50 is provided on the fixing spring 49. The fixing ring 50 abuts against the lower end surface of the bottom sleeve 44.

[0028] Working principle: When the height of the metal bottle cap in the fixing sleeve 21 needs to be adjusted, first insert the wrench into the hexagonal hole 47, and then rotate the bottom rod 45. The bottom rod 45 is threadedly connected to the bottom sleeve 44, so the position of the tray 46 can be changed. Since the metal bottle cap contacts the tray 46, the fixed position of the metal bottle cap can be changed, so corresponding adjustments can be made. Since there is a fixing spring 49 on the bottom plate 48, the fixing ring 50 on the fixing spring 49 continuously contacts the bottom sleeve 44, the tray 46 can always be kept when multiple positions need to be adjusted. Under a larger fixing force, when the metal bottle cap is placed between the multiple bonding plates 25 through the feeding mechanism, as the multiple synchronous sleeves 34 slide downward, the transverse rod 35 slides along the transverse hole 36, which will make the slider 23 slide along the inclined groove 27. At this time, the slider 23 is in a downward and expanded state, so that the bonding plate 25 can provide a larger fixing force and make the metal bottle cap have a downward fixing force with the tray 46, thereby ensuring the stability of the fixation, and providing corresponding friction through the continuous compression of the spring 26, thereby ensuring the effect of use.

[0029] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A polishing machine, comprising a fixed frame (1), characterized in that: The fixing frame (1) is installed on the external equipment, and a grinding mechanism is provided on the fixing frame (1); The grinding mechanism comprises a lifting mechanism, a lifting plate (2), a reversing box (3), an external tube (4), an internal tube (5), an external disc (6), a polishing and grinding ring (7), a polishing and grinding disc (8), an internal disc (9), an expansion spring (10), a grinding block (11), an annular sleeve (12) and a fixing mechanism. The lifting mechanism is connected to a fixing frame (1) and the lifting plate (2) in a coordinated manner. A plurality of reversing boxes (3) are provided, and the plurality of reversing boxes (3) are respectively and equidistantly mounted on the lifting plate (2). Each of the reversing boxes (3) is rotatably connected to the external tube (4), and the external tube (4) is rotatably connected to the internal tube (5). The external disc (6) is coaxially mounted on the external tube (4), and the polishing and grinding ring (7) is mounted on the external disc (6). ), a polishing disc (8) is coaxially mounted on the inner tube (5), and the polishing disc (8) is fitted on the lower end surface of the outer disc (6), the inner disc (9) is mounted on the polishing disc (8), a plurality of expansion springs (10) are equidistantly mounted on the outer wall of the inner disc (9), a grinding block (11) is mounted on each expansion spring (10), a plurality of grinding blocks (11) are slidably fitted on the polishing disc (8), an annular sleeve (12) is connected between each two of the grinding blocks (11), the fixing mechanism is mounted on the fixing frame (1), a polishing motor (13) is provided on each of the reversing boxes (3), and an intermediate gear (14) is provided on the protruding end of the polishing motor (13).

2. A polishing machine according to claim 1, characterized in that: An external gear (15) is coaxially provided on the external tube (4), and an internal gear (16) is coaxially provided on the internal tube (5). The internal gear (16) and the external gear (15) are synchronously meshed with the intermediate gear (14) at upper and lower ends respectively.

3. A polishing machine according to claim 1, characterized in that: The lifting mechanism comprises a side frame (17), a lifting motor (18), a lead screw (19) and a lifting sleeve (20). Two side frames (17) are provided, and the two side frames (17) are respectively mounted on two sides of a fixed frame (1). A lifting motor (18) is respectively mounted on each side frame (17). A lead screw (19) is mounted on the protruding end of the lifting motor (18). The lead screw (19) is rotatably connected to the side frame (17). The lifting sleeve (20) is threadedly connected to the lead screw (19). The lifting sleeve (20) is slidably connected in the side frame (17). The lifting plate (2) is connected to the two lifting sleeves (20).

4. A polishing machine according to claim 1, characterized in that: The fixing mechanism comprises a fixing sleeve (21), a guide block (22), a slider (23), a guide spring (24), a bonding plate (25) and a spring (26). A plurality of guide blocks (22) are provided, and the plurality of guide blocks (22) are respectively mounted on the fixing sleeve (21) at equal distances. An inclined groove (27) is respectively provided on both sides of each guide block (22). The slider (23) is slidably connected to the inclined groove (27). The upper and lower ends of the slider (23) are respectively connected to the guide spring (24). The upper and lower ends of the guide spring (24) are respectively connected to the bonding plate (25). A spring (26) is mounted on the bonding plate (25). The spring (26) is connected to the slider (23). The bonding plate (25) is provided with a plurality of friction grooves (28) at equal distances.

5. A polishing machine according to claim 4, characterized in that: The fixed frame (1) is provided with a transmission motor (29), a transmission chain (30) is meshed on the extended end of the transmission motor (29), a drive shaft (31) is rotatably provided on the fixed frame (1), the transmission chain (30) is meshed on the drive shaft (31), a conveying chain (32) is meshed on the drive shaft (31), the conveying chain (32) is rotatably connected to the fixed frame (1), a receiving plate (33) is provided on the conveying chain (32), and the fixed sleeve (21) is mounted on the receiving plate (33).

6. A polishing machine according to claim 4, characterized in that: A synchronous sleeve (34) is slidably provided on the outer wall of the plurality of guide blocks (22), a plurality of transverse rods (35) are respectively provided on each of the slide blocks (23), a plurality of transverse holes (36) are equidistantly provided on the side wall of the synchronous sleeve (34), the transverse rods (35) are slidably connected in the transverse holes (36), a plurality of the synchronous sleeves (34) are provided, and a follower sleeve (37) is respectively provided on the plurality of the synchronous sleeves (34).

7. A polishing machine according to claim 6, characterized in that: A plurality of the follower sleeves (37) are respectively provided with a pressure plate (38), a lower end surface of each of the synchronous sleeves (34) is respectively provided with a return spring (39), an upper end surface of the fixed sleeve (21) is provided with an annular groove (40), the return spring (39) is pressed in the annular groove (40), and adjustment rods (41) are respectively slidably provided on both sides of the lifting plate (2), a nut (42) is threadedly provided on the adjustment rod (41), and the nut (42) is fitted on the lifting plate (2).

8. A polishing machine according to claim 7, characterized in that: A compression spring (43) is sleeved on the adjusting rod (41), one end of the compression spring (43) is connected to the adjusting rod (41), and the other end of the compression spring (43) abuts against the lower end surface of the lifting plate (2), and the adjusting rod (41) is pressed against the pressure plate (38).

9. A polishing machine according to claim 8, characterized in that: A bottom sleeve (44) is provided on the lower end surface of each fixing sleeve (21), a bottom rod (45) is threadedly provided on each bottom sleeve (44), a tray (46) is provided on the bottom rod (45), a hexagonal hole (47) is provided at the axial position of the tray (46) and the bottom rod (45), a bottom plate (48) is provided at one end of the bottom rod (45) away from the tray (46), and a fixing spring (49) is provided on the bottom plate (48).

10. A polishing machine according to claim 9, characterized in that: A fixing ring (50) is provided on the fixing spring (49), and the fixing ring (50) abuts against the lower end surface of the bottom sleeve (44).

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