CN108714851B - Automatic polishing device for wood products - Google Patents
Automatic polishing device for wood products Download PDFInfo
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- CN108714851B CN108714851B CN201810901542.4A CN201810901542A CN108714851B CN 108714851 B CN108714851 B CN 108714851B CN 201810901542 A CN201810901542 A CN 201810901542A CN 108714851 B CN108714851 B CN 108714851B
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- Prior art keywords
- material box
- polishing
- shell
- base
- scraps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
- B24B31/16—Means for separating the workpiece from the abrasive medium at the end of operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The utility model belongs to the technical field of polishing equipment, and relates to an automatic polishing device for a round product of a wood material; the main structure of the device comprises a top cover, a shell, a material box, a base, a hinge, a shaft sleeve, polishing cloth, an upper chip leakage hole, a middle partition plate, a lower chip leakage hole, a shaft hole, a separation barrel, a motor, a gear shaft, a wire passing hole, a sealing groove, sticking and sticking burrs and a gear groove; the motor drives the material box to rotate, and the ball-like wood product and the polishing cloth are rubbed with each other in the rotation process of the material box, so that the surface of the ball-like wood product is polished smoothly; the ground and fallen scraps can fall onto the base through the upper scraps leaking holes and the lower scraps leaking holes, and when excessive scraps are accumulated, the base can be opened to clean scraps; the polishing cloth can be conveniently replaced after being worn; the novel energy-saving environment-friendly solar energy collector is novel in structure, reliable in design principle, convenient to operate and use, low in preparation cost, energy-saving and environment-friendly.
Description
Technical field:
the utility model belongs to the technical field of polishing equipment, and particularly relates to an automatic polishing device for a round-like product of a wood material, which can automatically polish a ball which is similar to a processed ball or a natural ball after rough processing, remove burrs and scratches, reduce surface roughness and enable the ball to form a smooth surface.
The background technology is as follows:
sphere-shaped decorations made of materials such as wood or jade are often applied to the decoration fields of jewelry, home furnishings and the like, and natural sphere-like articles such as walnuts and the like are also required to be polished by a polishing device to finally prepare smooth finished products. The polishing device is mainly used for removing burrs on the surface of the sphere and polishing the surface. The existing polishing mode for the ball body mainly comprises the following steps: firstly, manual polishing is suitable for polishing small-batch large-scale spheres, however, the manual polishing mode is poor in precision, high in quality control difficulty, time-consuming and labor-consuming, and low in efficiency, and the degree of regularity of the spheres cannot be guaranteed; secondly, a fixed polishing machine is used; the utility model patent with the Chinese patent publication number of CN205817504U discloses a stone ball polishing machine, which uses a chuck to fixedly clamp stone products to be processed, a motor drives the stone products to rotate along the vertical direction, a turning device drives a grinding head to run along the horizontal direction within a certain radian range, and the surface of the stone products is polished; when the design device is used, the object is required to be fixed and polished, and only one object can be processed at the same time, so that the processing speed is reduced, and the efficiency is lower; thirdly, a full-automatic polishing device is used; the utility model patent with the publication number of CN206825147U discloses an integrated ball grinder, which comprises a base, a sand disc, a groove disc and a driving device, wherein steel balls roll along a raceway on the groove disc under the friction force of the sand disc, and are rubbed with the sand disc to polish in the rolling process; the utility model can process a plurality of objects at one time, but the machine has larger size, complex structure, high price and high maintenance cost, and is not convenient to replace after the sand disc is worn, thus being not suitable for small-batch processing.
In summary, the existing technology for polishing the appearance of the spherical products made of wood or soft materials is difficult to realize the processing requirements of high precision, small batch and low cost, and the used equipment has the advantages of complex and heavy structure, high polishing cost, low precision, difficult replacement of polishing materials and the like.
The utility model comprises the following steps:
the utility model aims to overcome the defects of the prior art, and aims to solve the defects of poor precision and low efficiency of manual polishing and fixed polishing machines and high cost of the existing automatic ball grinding machine body, and the utility model provides an automatic polishing device for wood products under the conditions of mass production and manufacturing, low cost and convenient use.
In order to achieve the aim of the utility model, the utility model relates to an automatic polishing device for wood products, which comprises a main body structure, a top cover, a shell, a material box, a base, a hinge, a shaft sleeve, polishing cloth, an upper chip leakage hole, a middle partition plate, a lower chip leakage hole, a shaft hole, a separation barrel, a motor, a gear shaft, a wire passing hole, a sealing groove, sticking and roughening and a gear groove; the discoid top cover of the sealing structure corresponding to the material box and the shell is fixedly connected with the shell in a rotating way through a hinge; the shaft sleeve is in interference fit with the shell, and the shaft sleeve is in clearance fit with the material box; the shaft sleeve can form a relative gap position between the material box and the shell, and friction resistance when the material box rotates can be reduced after lubricating oil is filled in the gap; the material box is of a hollow cylindrical box-shaped structure, sticking adhesive thorns are fixedly attached to the upper part of the inner surface of the material box, the bottom of the material box is provided with upper chip leakage holes, and the upper chip leakage holes are arranged in a circular ring shape by taking the central shaft of the material box as the center of a circle; the bottom of the outer surface of the material box is provided with a gear groove; the polishing cloth is attached to the material box through sticking adhesive thorns, and a hole-shaped structure with the position and the size corresponding to the upper chip leakage hole is arranged at the bottom of the polishing cloth; the middle partition plate of the round partition plate type is fixedly positioned in the middle part of the shell, and the periphery of the middle partition plate is fixedly connected with the shell; the center of the middle partition board is provided with a shaft hole, the outer side of the middle partition board is provided with a lower chip leakage hole, and the lower chip leakage holes are arranged in a circular ring shape; the isolating cylinder with the cylindrical structure is fixedly connected below the middle partition plate, and the maximum radius of the isolating cylinder is slightly smaller than the distance between the lower chip leakage hole and the center of the middle partition plate; the metal base is in threaded connection with the shell, the base is provided with a sealing groove, and after the base is screwed with the shell, the sealing groove is embedded with the isolation cylinder so as to prevent sundries from entering the isolation cylinder; the motor with controllable rotating speed is fixed on the base, and after the base is screwed with the shell, the motor is positioned at the center of the isolation cylinder, and a gear shaft on the motor passes through the shaft hole; one end of the gear shaft is rigidly connected with the motor rotor, and the other end of the gear shaft is of a gear structure and meshed with the gear groove; the power cord of motor can be through the line hole connection power on the base.
The diameter and the height of the material box are equal and are smaller than 60cm, and the diameter ratio of the material box to the polished product is 8-10:1, the magnitude of this ratio affects the polishing time and quality.
The structure of the polishing cloth is in a non-woven fabric state or is a convex polishing cloth manufactured by electrostatic spinning equipment, and electrostatic spinning liquid for preparing the convex polishing cloth contains sand grains with different fineness and bamboo fiber grains, and the fineness and the addition amount of the sand grains are different according to different polishing brightness, wherein the proportion of the bamboo fiber grains and the sand grains in the electrostatic spinning liquid is respectively 20-30% and 0-10%; other ingredients and preparation methods in the electrostatic spinning solution are prepared by adopting a conventional technology; the polishing cloth is commercially available polishing abrasive cloth or hard coarse thread cloth.
The utility model is used for polishing wood products and comprises the following specific processes: placing the ball-like wood products to be polished into a material box, wherein the number of the ball-like wood products to be polished is 8-10 in the material box in a transverse direction and no more than 10 in a vertical direction; the motor is electrified to drive the gear shaft to rotate, and the gear shaft drives the material box to rotate through the meshed gear grooves on the material box; the ball-like wooden product and the polishing cloth are rubbed with each other in the rotation process of the material box, so that the surface of the ball-like wooden product is polished smoothly; the ground and fallen scraps can fall onto the base with the box-shaped top surface through the upper scraps leaking holes and the lower scraps leaking holes, and when excessive scraps are accumulated, the base can be opened to clean scraps; the polishing cloth can be conveniently replaced after being worn, so that the practicability is improved and the polishing efficiency is improved.
The utility model relates to an automatic polishing device for polishing walnut shells, which has the same structure as a wood product automatic polishing device, wherein the inner space diameter of a material box is 40-55cm, the height of the material box is 50-60cm, the outer diameter of the walnut shells is 3-5cm, the number of the walnuts which are transversely discharged in the material box is not more than 8, the number of the walnuts which are vertically discharged in the material box is 10, and the rotating speed of the material box is 180-220 revolutions per minute; the polishing cloth is electrostatic spinning cloth, the grain diameter in the spinning solution is 0.1-0.3mm, the weight ratio of the grains in the spinning solution is 6-7%, and the weight ratio of the bamboo fiber particles is 22%; other formulas are the same as the electrostatic spinning solution of the conventional chemical fiber; after polishing for 2.5-4 hours, the walnut shell has no thorn lines or grooves and has obvious brightness.
Compared with the prior art, the designed wood product automatic polishing device and the designed automatic polishing device for polishing the walnut shells are simple in main structure, reasonable in design, reliable in principle and easy to manufacture, overcomes the defects of poor precision and low efficiency or high cost in the prior art, can automatically polish and polish spheres or soft materials similar to spheres, is easy to clean scraps, is convenient to use, is low in preparation cost, saves energy and is environment-friendly to application.
Description of the drawings:
fig. 1 is a schematic diagram of the principle of the main structure of the present utility model.
Fig. 2 is a schematic structural diagram of a cartridge according to the present utility model.
Fig. 3 is a schematic view of the structure of the bottom of the cartridge according to the present utility model.
The specific embodiment is as follows:
the utility model is further illustrated by the following examples in conjunction with the accompanying drawings.
Example 1:
the embodiment relates to an automatic polishing device for wood products, which comprises a main body structure, wherein the main body structure comprises a top cover 1, a shell 2, a material box 3, a base 4, a hinge 5, a shaft sleeve 6, polishing cloth 7, an upper chip leakage hole 8, a middle partition plate 9, a lower chip leakage hole 10, a shaft hole 11, a separation barrel 12, a motor 13, a gear shaft 14, a wire passing hole 15, a sealing groove 16, sticking and sticking burrs 17 and a gear groove 18; the discoid top cover 1 with sealing structures corresponding to the material box 3 and the shell 2 is fixedly connected with the shell 2 in a rotating way through a hinge 5; the shaft sleeve 6 is in interference fit with the shell 2, and the shaft sleeve 6 is in clearance fit with the material box 3; the shaft sleeve 6 can form a relative gap position between the material box 3 and the shell 2, and can reduce friction resistance when the material box 3 rotates after lubricating oil is filled in the gap; the material box 3 is of a hollow cylindrical box-shaped structure, sticking adhesive burrs 17 are fixedly attached to the upper part of the inner surface of the material box 3, an upper chip leakage hole 8 is formed in the bottom of the material box 3, and the upper chip leakage hole 8 is arranged in a circular ring shape by taking the central axis of the material box 3 as the center of a circle; the bottom of the outer surface of the material box 3 is provided with a gear groove 18; the polishing cloth 7 is attached to the material box 3 through sticking and sticking burrs 17, and a hole-shaped structure with the position and the size corresponding to the upper chip leakage hole 8 is arranged at the bottom of the polishing cloth 7; the middle partition plate 9 of the round partition plate type is fixedly positioned in the middle part of the shell 2, and the periphery of the middle partition plate 9 is fixedly connected with the shell 2; the center of the middle partition plate 9 is provided with a shaft hole 11, the middle partition plate 9 is provided with a lower chip leakage hole 10 near the outer side, and the lower chip leakage holes 10 are arranged in a circular ring shape; the isolating cylinder 12 with a cylindrical structure is fixedly connected below the middle partition plate 9, and the maximum radius of the isolating cylinder 12 is slightly smaller than the distance between the lower chip leakage hole 10 and the center of the middle partition plate; the metal base 4 is in threaded connection with the shell 2, the base 4 is provided with a sealing groove 16, and after the base 4 is screwed with the shell 2, the sealing groove 16 is embedded with the isolation cylinder 12 so as to prevent sundries from entering the isolation cylinder 12; the motor 13 with controllable rotating speed is fixed on the base 4, and after the base 4 is screwed with the shell 2, the motor 13 is positioned at the center of the isolation cylinder 12, and a gear shaft 14 on the motor 13 passes through the shaft hole 11; one end of the gear shaft 14 is rigidly connected with the motor rotor, and the other end is in a gear structure and meshed with the gear groove 18; the power cord of the motor 13 can be connected to a power supply through a cord hole 15 in the base 4.
The diameter and height of the cartridge 3 are equal and are smaller than 60cm, and the diameter ratio of the diameter of the cartridge 3 to the diameter of the polished product 19 is 8-10:1, the magnitude of this ratio affects the polishing time and quality.
The polishing cloth 7 in this embodiment is in a nonwoven fabric state or is a convex abrasive cloth manufactured by an electrostatic spinning device, and the electrostatic spinning solution for manufacturing the convex abrasive cloth contains sand grains with different fineness and bamboo fiber grains, and the fineness and the addition amount of the sand grains are different according to different polishing brightness, and the proportion of the bamboo fiber grains and the sand grains in the electrostatic spinning solution is 20-30% and 0-10% respectively; other ingredients and preparation methods in the electrostatic spinning solution are prepared by adopting a conventional technology; the polishing cloth 7 is either a commercially available polishing abrasive cloth or a hard, thick cloth.
The specific process when the embodiment is used for polishing wood products is as follows: placing the ball-like wood products to be polished into a material box 3, wherein the ball-like wood products to be polished are transversely arranged into 8-10 pieces in the material box 3, and the number of the ball-like wood products to be polished is not more than 10 pieces in the vertical direction; after the motor 13 is electrified, the gear shaft 14 is driven to rotate, and the gear shaft 14 drives the material box 3 to rotate through a gear groove 18 meshed with the material box 3; the ball-like wood products and the polishing cloth 7 and the ball-like wood products are rubbed with each other in the rotation process of the material box 3, so that the surfaces of the ball-like wood products are polished smoothly; the ground and fallen scraps can fall onto the base 4 with the box-shaped top surface through the upper scraps leakage holes 8 and the lower scraps leakage holes 10, and when excessive scraps are accumulated, the base 4 can be opened to clean scraps; the polishing cloth 7 can be conveniently replaced after being worn, so that the practicability is improved and the polishing efficiency is improved.
Example 2:
the embodiment relates to an automatic polishing device for polishing walnut shells, which has the same device structure as that of embodiment 1, wherein the inner space of a material box 3 is 40-55cm in diameter and 50-60cm in height, the outer diameter of the walnut shells is 3-5cm, the number of the walnuts which are transversely discharged in the material box 3 is not more than 8, the number of the walnuts which are vertically discharged is 10, and the rotating speed of the material box 3 is 180-220 revolutions per minute; the polishing cloth is electrostatic spinning cloth, the grain diameter in the spinning solution is 0.1-0.3mm, the weight ratio of the grains in the spinning solution is 6-7%, and the weight ratio of the bamboo fiber particles is 22%; other formulas are the same as the electrostatic spinning solution of the conventional chemical fiber; after polishing for 2.5-4 hours, the walnut shell has no thorn lines or grooves and has obvious brightness.
Claims (4)
1. An automatic polishing device for wood products, which is characterized in that: the main structure of the device comprises a top cover, a shell, a material box, a base, a hinge, a shaft sleeve, polishing cloth, an upper chip leakage hole, a middle partition plate, a lower chip leakage hole, a shaft hole, a separation barrel, a motor, a gear shaft, a wire passing hole, a sealing groove, sticking and sticking bristles and a gear groove; the discoid top cover of the sealing structure corresponding to the material box and the shell is fixedly connected with the shell in a rotating way through a hinge; the shaft sleeve is in interference fit with the shell, and the shaft sleeve is in clearance fit with the material box; the shaft sleeve can form a relative gap position between the material box and the shell, and friction resistance when the material box rotates can be reduced after lubricating oil is filled in the gap; the material box is of a hollow cylindrical box-shaped structure, sticking adhesive thorns are fixedly attached to the upper part of the inner surface of the material box, the bottom of the material box is provided with upper chip leakage holes, and the upper chip leakage holes are arranged in a circular ring shape by taking the central shaft of the material box as the center of a circle; the bottom of the outer surface of the material box is provided with a gear groove; the polishing cloth is attached to the material box through sticking adhesive thorns, and a hole-shaped structure with the position and the size corresponding to the upper chip leakage hole is arranged at the bottom of the polishing cloth; the middle partition plate of the round partition plate type is fixedly positioned in the middle part of the shell, and the periphery of the middle partition plate is fixedly connected with the shell; the center of the middle partition board is provided with a shaft hole, the outer side of the middle partition board is provided with a lower chip leakage hole, and the lower chip leakage holes are arranged in a circular ring shape; the isolating cylinder with the cylindrical structure is fixedly connected below the middle partition plate, and the maximum radius of the isolating cylinder is slightly smaller than the distance between the lower chip leakage hole and the center of the middle partition plate; the metal base is in threaded connection with the shell, the base is provided with a sealing groove, and after the base is screwed with the shell, the sealing groove is embedded with the isolation cylinder so as to prevent sundries from entering the isolation cylinder; the motor with controllable rotating speed is fixed on the base, and after the base is screwed with the shell, the motor is positioned at the center of the isolation cylinder, and a gear shaft on the motor passes through the shaft hole; one end of the gear shaft is rigidly connected with the motor rotor, and the other end of the gear shaft is of a gear structure and meshed with the gear groove; the power cord of motor can be through the line hole connection power on the base.
2. The automated wood product polishing apparatus of claim 1, wherein the diameter and height of the cartridge are equal and are each less than 60cm, and the ratio of the diameter of the cartridge to the diameter of the product being polished is from 8 to 10:1.
3. the automatic polishing device for wood products according to claim 1, wherein the polishing cloth has a structure of non-woven fabric or is a convex abrasive cloth manufactured by electrostatic spinning equipment, and an electrostatic spinning solution for preparing the convex abrasive cloth contains sand grains with different fineness and bamboo fiber particles, wherein the fineness and the adding amount of the sand grains are different according to different polishing brightness, and the weight ratio of the bamboo fiber particles to the sand grains in the electrostatic spinning solution is 20-30% and 0-10% respectively; other ingredients and preparation methods in the electrostatic spinning solution are prepared by adopting a conventional technology; the polishing cloth is commercially available polishing abrasive cloth or hard coarse thread cloth.
4. The automated wood product polishing apparatus according to claim 1, wherein the specific process for polishing the wood product is: placing the ball-like wood products to be polished into a material box, wherein the number of the ball-like wood products to be polished is 8-10 in the material box in a transverse direction and no more than 10 in a vertical direction; the motor is electrified to drive the gear shaft to rotate, and the gear shaft drives the material box to rotate through the meshed gear grooves on the material box; the ball-like wooden product and the polishing cloth are rubbed with each other in the rotation process of the material box, so that the surface of the ball-like wooden product is polished smoothly; the ground and fallen scraps can fall onto the base with the box-shaped top surface through the upper scraps leaking holes and the lower scraps leaking holes, and when excessive scraps are accumulated, the base can be opened to clean scraps; the polishing cloth can be conveniently replaced after being worn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810901542.4A CN108714851B (en) | 2018-08-09 | 2018-08-09 | Automatic polishing device for wood products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810901542.4A CN108714851B (en) | 2018-08-09 | 2018-08-09 | Automatic polishing device for wood products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108714851A CN108714851A (en) | 2018-10-30 |
| CN108714851B true CN108714851B (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810901542.4A Active CN108714851B (en) | 2018-08-09 | 2018-08-09 | Automatic polishing device for wood products |
Country Status (1)
| Country | Link |
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| CN (1) | CN108714851B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11911871B2 (en) * | 2018-10-31 | 2024-02-27 | Taiwan Semiconductor Manufacturing Company Ltd. | Method of manufacturing composite article |
| CN110434735B (en) * | 2019-07-31 | 2021-07-06 | 安徽邦龙建业有限公司 | Steel bar rust cleaning device for building construction |
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| JPH077691U (en) * | 1993-07-12 | 1995-02-03 | 株式会社ユニオン | Pachinko ball lifting and polishing equipment |
| US6050887A (en) * | 1999-02-19 | 2000-04-18 | Chang; Hsueh Chin | Sand cloth packaging structure for vacuum-type rotary sanders |
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| JPH077691U (en) * | 1993-07-12 | 1995-02-03 | 株式会社ユニオン | Pachinko ball lifting and polishing equipment |
| US6050887A (en) * | 1999-02-19 | 2000-04-18 | Chang; Hsueh Chin | Sand cloth packaging structure for vacuum-type rotary sanders |
| CN103481176A (en) * | 2013-09-04 | 2014-01-01 | 东台市建东机械制造有限公司 | Post processing polishing process for hot galvanizing product |
| CN205651200U (en) * | 2016-05-31 | 2016-10-19 | 付小春 | High -efficient optical equipment that throws of wood pearl |
| CN205834986U (en) * | 2016-07-25 | 2016-12-28 | 武侯区华聚家私经营部 | A kind of dust-proof sanding apparatus of timber plate |
| CN207139504U (en) * | 2017-07-18 | 2018-03-27 | 宁国市南方耐磨材料有限公司 | One kind is used for high-end castings production accessory surface derusting device |
| CN207578149U (en) * | 2017-12-13 | 2018-07-06 | 天津轻工职业技术学院 | A kind of text plays walnut polishing grinding device |
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| CN108714851A (en) | 2018-10-30 |
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