CN218427713U - Double-cylinder type abrasive material supply system and liquid finishing machine adopting same - Google Patents
Double-cylinder type abrasive material supply system and liquid finishing machine adopting same Download PDFInfo
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- CN218427713U CN218427713U CN202220787931.0U CN202220787931U CN218427713U CN 218427713 U CN218427713 U CN 218427713U CN 202220787931 U CN202220787931 U CN 202220787931U CN 218427713 U CN218427713 U CN 218427713U
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Abstract
The utility model discloses a double-cylinder type grinding material supply system and a liquid finishing machine adopting the same, which comprises a frame, a valve block, a grinding material conveying main pipe and two groups of feeding devices arranged on the frame, wherein the two feeding devices are respectively connected with the valve block, and the valve block is connected with the grinding material conveying main pipe; each feeding device comprises a material return box, an abrasive cylinder, a plunger mechanism, an abrasive conveying branch pipe, a one-way valve and a lifting driving unit capable of driving the plunger mechanism to lift, one end of the abrasive conveying branch pipe is connected with the abrasive cylinder, the other end of the abrasive conveying branch pipe is connected with the valve block, and the one-way valve is installed on the abrasive conveying branch pipe. The utility model discloses a two sets of feedway's alternate reciprocating motion is ground to multiunit crowded material, can continuously carry the abrasive material to the work piece of treating the polishing, consequently can treat the work piece of polishing and carry out the polishing in succession, avoids because of the abrasive material can not continuously reach the polishing interruption that the workstation caused, improves polishing efficiency.
Description
Technical Field
The utility model relates to a burnishing device technical field, in particular to double-cylinder formula abrasive material feed system and adopt liquid burnishing machine of this system.
Background
Polishing is an important process in machining, and the quality of the polishing level is particularly important for the product quality.
With the diversification of product shapes and the continuous improvement of precision requirements, particularly for the processing of concave surfaces and curved pore channels, the traditional manual grinding and polishing can not meet the requirements of customers, common cutters and grinding tools are difficult to achieve for the inner walls of workpieces with complex shapes, even if the conventional manual grinding and polishing can be operated, the time consumption is as long as several hours, the dimensional precision and the shape precision are difficult to guarantee, and the product interchangeability is also influenced if the conventional manual grinding and polishing tool is produced in large batches. Thus, fluid polishing occurs, which can overcome the above-mentioned drawbacks.
However, the existing fluid polishing apparatus has certain disadvantages, the abrasive material supply system is a structure for conveying the abrasive material and polishing the workpiece, the driving mode is generally a mode that the oil cylinder drives the piston to extrude the abrasive material, the driving mode determines that the working process has intermittence, namely the piston is pushed to extrude the abrasive material and polish the workpiece, and when the driving end of the oil cylinder retracts, the workpiece is not polished any more, so that the polishing efficiency is low.
Therefore, the present invention is directed to a dual-cylinder abrasive feeding system to overcome the above-mentioned drawbacks.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a double-cylinder formula abrasive material feed system through two sets of feedway's alternating reciprocating motion, can treat the work piece of polishing and carry out continuous polishing, avoids because of the abrasive material can not last the polishing interrupt that reachs the workstation and cause, improves polishing efficiency.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a double-cylinder type abrasive material supply system, which comprises a frame, a valve block, an abrasive material conveying main pipe and two groups of feeding devices arranged on the frame, wherein the two feeding devices are respectively connected with the valve block, and the valve block is connected with the abrasive material conveying main pipe;
each feeding device comprises a material return box, an abrasive cylinder, a plunger mechanism, an abrasive conveying branch pipe, a one-way valve and a lifting driving unit capable of driving the plunger mechanism to lift, wherein the material return box is provided with a material return port, the abrasive cylinder is positioned below the material return box and communicated with the material return box, one end of the abrasive conveying branch pipe is connected with the abrasive cylinder, the other end of the abrasive conveying branch pipe is connected with the valve block, and the abrasive conveying branch pipe is provided with the one-way valve;
the side that definition lift drive unit place is last, plunger mechanism includes connecting rod, plunger and seal structure, the upper end of connecting rod with lift drive unit's output is connected, and the lower extreme is connected the plunger, seal structure locates plunger and/or abrasive material jar, the plunger can stretch into the abrasive material jar and with abrasive material jar sealing connection, through lift drive unit drive plunger descends along the abrasive material jar and extrudes the abrasive material into abrasive material conveying branch pipe.
Further, the feed back box is provided with an opening for facilitating feeding.
Further, the sealing structure is arranged on the plunger; the sealing structure comprises a sealing ring base, a sealing ring and a sealing ring fixing plate, the connecting rod is connected with the sealing ring base, and the sealing ring is fixed on the sealing ring base by the sealing ring fixing plate;
the lifting driving unit drives the plunger piston to descend to drive the sealing ring to be in sealing connection with the inner wall surface of the grinding material cylinder.
Further, the plunger is a cylindrical guide pillar; the sealing structure is a sealing ring which is fixed on the grinding cylinder;
the lifting driving unit drives the plunger piston to descend to be matched with the sealing ring, so that the sealing connection between the plunger piston and the grinding material cylinder is realized.
Furthermore, the lifting driving unit is a cylinder, an electric cylinder, an oil cylinder or a servo motor driving module.
Further, the guide pillars are ceramic guide pillars, steel guide pillars or silicon carbide guide pillars.
Further, the frame is of an integrated structure or a split structure.
Further, the grinding material cylinder is a steel cylinder, a ceramic cylinder or a silicon carbide cylinder.
The utility model also provides an adopt the liquid finishing machine of double-cylinder formula abrasive material feed system, liquid finishing machine include be used for installing the work piece of treating polishing the workstation, can drive the workstation along the rotatory R of R axle to rotary mechanism, can drive the X of workstation along X to the translation to actuating mechanism, the shower nozzle that can spray the abrasive material, can drive the shower nozzle along Z to the Z of reciprocating to actuating mechanism and can drive the shower nozzle along Y to the Y of translation to actuating mechanism and feed back storehouse;
the abrasive conveying main pipe is communicated with the spray head;
continuously conveying the internal grinding materials to the spray head through the double-cylinder type grinding material supply system and spraying the grinding materials to a workpiece to be polished; the sprayed abrasive flows into a material return bin and falls back to a material return box through the material return branch pipe;
the workpiece is driven to rotate and translate along the X direction by the R direction rotating mechanism and the X direction driving mechanism, and the spray head is driven to move up and down along the Z direction and translate along the Y direction by the Z direction driving mechanism and the Y direction driving mechanism, so that the workpiece is polished in multiple directions.
Furthermore, the R-direction rotating mechanism comprises an R shaft and a driving motor for driving the R shaft to rotate, the workbench is arranged on the R shaft or a part of the R shaft is the workbench, and the R shaft and a workpiece arranged on the R shaft are driven to rotate by the driving motor;
the liquid finishing machine comprises a base, two support columns and two guide sleeves, wherein the support columns are fixed on the base, the two guide sleeves are respectively positioned on the two support columns, and an R shaft penetrates through the two guide sleeves and can rotate relative to the guide sleeves; the driving motor is installed on the supporting column.
The utility model has the beneficial technical effects that:
the utility model comprises a frame, a valve block, a grinding material conveying main pipe and two groups of feeding devices arranged on the frame, wherein the two feeding devices are respectively connected with the valve block, and the valve block is connected with the grinding material conveying main pipe; each feeding device comprises a material return box, an abrasive cylinder, a plunger mechanism, an abrasive conveying branch pipe, a one-way valve and a lifting driving unit capable of driving the plunger mechanism to lift, one end of the abrasive conveying branch pipe is connected with the abrasive cylinder, the other end of the abrasive conveying branch pipe is connected with the valve block, and the abrasive conveying branch pipe is provided with the one-way valve; the utility model discloses a two sets of feedway's alternate reciprocating motion is ground to multiunit crowded material, can continuously carry the abrasive material to the work piece of treating the polishing, consequently can treat the work piece of polishing and carry out continuous polishing, avoids because of the polishing that the abrasive material can not continuously reach the workstation and cause is interrupted, improves polishing efficiency: if the amount of the abrasive to be delivered to the spray head is ensured in the polishing process, the two feeding devices can be extruded and discharged simultaneously;
in addition, when the lifting driving unit drives the plunger to descend to extrude the grinding materials, the plunger is always connected with the sealing ring to realize sealing, and firstly, the grinding material cylinder reduces abrasion; secondly, the problem of low discharging efficiency caused by overflow of the abrasive from the inner wall of the abrasive cylinder and the gap of the piston in the extrusion process is avoided; because media such as abrasive or water and the like need to be added periodically in the polishing process, the whole plunger mechanism needs to be lifted to be separated from the material return box, the material return box is provided with an opening, and the sealing structure can solve the problems that the plunger mechanism can be lifted completely under the feeding condition and the plunger can be sealed with the abrasive cylinder when the abrasive is extruded;
furthermore, the utility model discloses a liquid burnishing machine's R axle wearing cover is in two guide pin bushings and can be rotatory for the guide pin bushing, and the both ends of R axle all are equipped with the guide pin bushing that is used for the support, compare in the structural style of the guide pin bushing of unilateral setting, improve the stability of R axle rotation process.
Drawings
Fig. 1 is a schematic structural view of the abrasive material supply system of the present invention (the frame is an integral type);
fig. 2 is a second schematic structural view of the abrasive material supply system of the present invention (the frame is a split type);
fig. 3 is one of the schematic structural diagrams of the plunger mechanism of the present invention;
fig. 4 is a second schematic view of the plunger mechanism of the present invention;
FIG. 5 is a schematic view of the polishing machine of the present invention;
the reference numbers for the various parts are as follows:
the device comprises a frame 01, a valve block 302, an abrasive conveying main pipe 413, a feed back box 02, an abrasive cylinder 03, an abrasive conveying branch pipe 303, a one-way valve 301, a lifting driving unit 04, a feed back port 05, a connecting rod 10, a plunger 106, an abrasive cylinder outlet 105, a sealing ring base 101, sealing rings (102, 202), a sealing ring fixing plate 103 and a cylindrical guide pillar 201;
the device comprises a workbench 408, an X-direction driving mechanism 405, a spray head 410, a Z-direction driving mechanism 409, a Y-direction driving mechanism 411, a feed back bin 403, an R shaft 40, a base 401, a support column 402 and a guide sleeve 404.
Detailed Description
In order to make the technical means of the present invention clearer and to make the invention practical in accordance with the content of the specification, the following embodiments are described in further detail with reference to the accompanying drawings and examples, and the following examples are used to illustrate the present invention but do not limit the scope of the present invention.
Example 1: a double-cylinder type abrasive feeding system, as shown in fig. 1 to 3, includes a frame 01, a valve block 302, an abrasive conveying main pipe 413, and two sets of feeding devices disposed on the frame, where the two feeding devices are respectively connected to the valve block, and the valve block is connected to the abrasive conveying main pipe;
each feeding device comprises a material return box 02, an abrasive cylinder 03, a plunger mechanism, an abrasive conveying branch pipe 303, a one-way valve 301 and a lifting driving unit 04 capable of driving the plunger mechanism to lift, wherein the material return box is provided with a material return opening 05, the abrasive cylinder is positioned below the material return box and communicated with the material return box, one end of the abrasive conveying branch pipe is connected with the abrasive cylinder, the other end of the abrasive conveying branch pipe is connected with the valve block, and the abrasive conveying branch pipe is provided with the one-way valve (the abrasive in an abrasive output main pipe can be prevented from being fed back into the abrasive cylinder through the one-way valve);
the side that definition lift drive unit place is last, plunger mechanism includes connecting rod 104, plunger and seal structure, the upper end of connecting rod with lift drive unit's output is connected, and the lower extreme is connected the plunger, seal structure locates plunger and/or abrasive cylinder, the plunger can stretch into the abrasive cylinder and with abrasive cylinder sealing connection, through lift drive unit drive plunger descends along the abrasive cylinder and extrudes the abrasive into abrasive conveying branch pipe.
In this embodiment, the grinding cylinder is installed in the frame, the feed back box is fixed in directly over the grinding cylinder.
The abrasive cylinder is provided with an abrasive cylinder outlet 105, and the abrasive cylinder outlet is connected with the abrasive conveying branch pipe.
In this embodiment, the feed back box has the opening of being convenient for reinforced. The addition of abrasive media such as water, especially for fluid jet polishing, is facilitated by the need for periodic replenishment of the abrasive media.
As shown in fig. 3, the sealing structure is provided to the plunger 106; the sealing structure comprises a sealing ring base 101, a sealing ring 102 and a sealing ring fixing plate 103, the connecting rod is connected with the sealing ring base, and the sealing ring is fixed on the sealing ring base by the sealing ring fixing plate;
the lifting driving unit drives the plunger piston to descend to drive the sealing ring to be in sealing connection with the inner wall surface of the grinding material cylinder.
The oil cylinder is pressed downwards, the sealing ring is sealed with the grinding material cylinder, and the grinding material flows out from the outlet of the grinding material cylinder.
The advantages are that: the plunger is connected with the sealing ring, and the abrasion of the grinding cylinder is reduced.
In the process that the lifting driving unit drives the plunger to descend to extrude the grinding materials, the plunger is always connected with the sealing ring to realize sealing, and firstly, the grinding material cylinder reduces abrasion; secondly, the problem of low discharging efficiency caused by overflow of the grinding materials from the inner wall of the grinding material cylinder and the gap of the piston in the extrusion process is avoided; because in the polishing process, media such as abrasive or water need be added regularly, consequently need lift up whole plunger mechanism and make it break away from the feed back case, so the feed back case is equipped with uncovered, through setting up seal structure, can enough satisfy plunger mechanism can whole lift up and when extrusion abrasive under reinforced the condition, the plunger can also with the sealed problem of abrasive jar.
The lifting driving unit is a cylinder, an electric cylinder, an oil cylinder or a servo motor driving module, but is not limited thereto.
The guide posts are ceramic guide posts, steel guide posts or silicon carbide guide posts, but are not limited thereto.
The machine frame is of an integrated structure (namely, two grinding material cylinders share the same machine frame, as shown in figure 1) or a split structure (namely, two groups of grinding material cylinders are connected in parallel, as shown in figure 2).
The frame can be the frame of going up the roof beam, and base and spliced pole are connected and are constituteed, and the spliced pole can weld, screw fixation etc. with the fixed mode that goes up the work or material rest and close the base. The rack has high strength and good stability.
The grinding material cylinder is a steel cylinder, a ceramic cylinder or a silicon carbide cylinder, but is not limited to the above.
The abrasive feeding system can realize that the abrasives in the two abrasive cylinders are alternately or simultaneously conveyed to the abrasive conveying main pipe through the two one-way valves and the valve, and the backflow of the abrasives is avoided.
Example 2: a double-cylinder type abrasive material supply system, as shown in fig. 4, is similar in structure to example 1 except that: the plunger is a cylindrical guide column 201; the sealing structure is a sealing ring 202, and the sealing ring is fixed on the grinding cylinder;
the lifting driving unit drives the plunger piston to descend to be matched with the sealing ring, so that the sealing connection between the plunger piston and the grinding material cylinder is realized.
Wherein, the sealing washer is equipped with one or more.
The oil cylinder is pressed down, the guide post is sealed with one or more sealing rings, and the grinding materials flow out from the outlet of the grinding material cylinder to the grinding material conveying branch pipe. After the plunger is pressed down, the plunger rises, and the grinding material falls back to the grinding material cylinder through the material return box.
In this example, the volume is measured by the plunger depression.
The advantages are that: the plunger is connected with the sealing ring, and the abrasion of the grinding cylinder is reduced.
Example 3: a liquid finishing machine is shown in FIG. 5, and comprises a workbench 408 for mounting a workpiece to be polished, an R-direction rotating mechanism capable of driving the workbench to rotate along an R axis, an X-direction driving mechanism 405 capable of driving the workbench to translate along an X direction, a spray head 410 capable of spraying abrasive materials, a Z-direction driving mechanism 409 capable of driving the spray head to move up and down along a Z direction, a Y-direction driving mechanism 411 capable of driving the spray head to translate along a Y direction, and a material returning bin 403;
one end of the feed back branch pipe is connected with the feed back bin, and the other end of the feed back branch pipe is connected with the feed back box;
one end of the abrasive conveying main pipe is connected with the valve, and the other end of the abrasive conveying main pipe is communicated with the spray head; the abrasive delivery manifold is mounted to abrasive connecting rod 412;
continuously conveying the internal grinding materials to the spray head through the double-cylinder type grinding material supply system and spraying the grinding materials to a workpiece to be polished; the sprayed abrasive flows into a material return bin and falls back to a material return box through the material return branch pipe;
the workpiece is driven to rotate and translate along the X direction by the R direction rotating mechanism and the X direction driving mechanism, and the spray head is driven to move up and down along the Z direction and translate along the Y direction by the Z direction driving mechanism and the Y direction driving mechanism, so that the workpiece is polished in multiple directions.
In this embodiment, it is preferable that at least one of the return bin, the abrasive delivery main pipe, the abrasive delivery branch pipe, and the return bin is provided with a filter for filtering the abrasive.
The R-direction rotating mechanism comprises an R shaft 407 and a driving motor for driving the R shaft to rotate, the workbench is mounted on the R shaft, or the part of the R shaft is the workbench, and the R shaft is driven to rotate and a workpiece mounted on the R shaft is driven to rotate by the driving motor;
the liquid finishing machine comprises a base 401, two support columns 402 and two guide sleeves 404, wherein the support columns are fixed on the base, the two guide sleeves are respectively positioned on the two support columns, and an R shaft penetrates through the two guide sleeves and can rotate relative to the guide sleeves; the driving motor is installed on the supporting column.
The whole working process of the polishing machine can control and set related parameters through a control system, and the corresponding control system is easily designed by a person skilled in the art according to a control program required by the equipment.
The utility model discloses a theory of operation and working process do:
fixing a workpiece to be polished on a workbench, starting equipment, defining two feeding devices as a first feeding device and a second feeding device respectively under the action of a control system, and then driving a plunger mechanism to extrude the abrasive by an oil cylinder of the first feeding device so that the abrasive is sprayed to the workpiece through an abrasive conveying branch pipe, a one-way valve, a valve and an abrasive conveying main pipe through a spray head to polish the workpiece; meanwhile, the oil cylinder of the first feeding device drives the plunger mechanism to lift up, and in the process, the position information of the oil cylinder can be sensed through the position sensor and is transmitted to the control system; meanwhile, the one-way valve of the second feeding device is closed, and at the moment, media such as grinding materials, water and the like can be added into the feed back box of the second feeding device; the grinding materials sprayed out by the spray heads fall to the material return bins and flow into corresponding material return boxes through corresponding material return branch pipes;
the action processes of the second feeding device and the first feeding device are just reversed, namely, the grinding materials can be continuously conveyed to the workpiece to be polished through the alternate reciprocating motion of the two feeding devices, so that the workpiece to be polished can be continuously polished, the polishing interruption caused by the fact that the grinding materials cannot continuously reach the workbench is avoided, and the polishing efficiency is improved;
of course, in order to ensure the amount of the abrasive material conveyed to the spray head during the polishing process, the two feeding devices can be extruded and discharged simultaneously;
during polishing, the workbench or the spray head is driven to move through the X-direction driving mechanism, the Y-direction driving mechanism, the Z-direction driving mechanism and the R-direction rotating mechanism, the whole surface of a workpiece is polished, and the polishing effect and the polishing omnibearing range are guaranteed.
The above description is only a preferred embodiment of the present invention, and should not be used to limit the present invention, it should be noted that, for those skilled in the art, without departing from the technical principle of the present invention, a plurality of improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. A double-cylinder abrasive material supply system characterized in that: the grinding material feeding device comprises a rack (01), a valve block (302), a grinding material conveying main pipe (413) and two groups of feeding devices arranged on the rack, wherein the two feeding devices are respectively connected with the valve block, and the valve block is connected with the grinding material conveying main pipe;
each feeding device comprises a material return box (02), an abrasive cylinder (03), a plunger mechanism, an abrasive conveying branch pipe (303), a one-way valve (301) and a lifting driving unit (04) capable of driving the plunger mechanism to lift, the material return box is provided with a material return opening (05), the abrasive cylinder is positioned below the material return box and communicated with the material return box, one end of the abrasive conveying branch pipe is connected with the abrasive cylinder, the other end of the abrasive conveying branch pipe is connected with the valve block, and the abrasive conveying branch pipe is provided with the one-way valve;
the side that definition lift drive unit place is last, plunger mechanism includes connecting rod (104), plunger and seal structure, the upper end of connecting rod with lift drive unit's output is connected, and the lower extreme is connected the plunger, seal structure locates plunger and/or abrasive cylinder, the plunger can stretch into the abrasive cylinder and with abrasive cylinder sealing connection, through lift drive unit drive plunger descends and extrudees the abrasive with the abrasive material extrusion into abrasive material conveying branch pipe along the abrasive cylinder.
2. The dual-cylinder abrasive material supply system according to claim 1, wherein: the feed back case has the uncovered of being convenient for reinforced.
3. The dual-cylinder abrasive material supply system according to claim 1, wherein: the sealing structure is arranged on the plunger (106); the sealing structure comprises a sealing ring base (101), a sealing ring and a sealing ring fixing plate (103), the connecting rod is connected with the sealing ring base, and the sealing ring is fixed on the sealing ring base by the sealing ring fixing plate;
the lifting driving unit drives the plunger piston to descend to drive the sealing ring to be in sealing connection with the inner wall surface of the grinding material cylinder.
4. The dual-cylinder abrasive material supply system according to claim 1, wherein: the plunger is a cylindrical guide pillar (201); the sealing structure is a sealing ring which is fixed on the grinding cylinder;
the lifting driving unit drives the plunger piston to descend to be matched with the sealing ring, so that the sealing connection between the plunger piston and the grinding material cylinder is realized.
5. The dual-cylinder abrasive material supply system according to claim 1, wherein: the lifting driving unit is a cylinder, an electric cylinder, an oil cylinder or a servo motor driving module.
6. The dual-cylinder abrasive material supply system according to claim 4, wherein: the guide post is a ceramic guide post, a steel guide post or a silicon carbide guide post.
7. The dual-cylinder abrasive material supply system according to claim 1, wherein: the frame is of an integrated structure or a split structure.
8. The dual-cylinder abrasive material supply system according to claim 1, wherein: the grinding material cylinder is a steel cylinder, a ceramic cylinder or a silicon carbide cylinder.
9. A liquid finisher using the double-cylinder abrasive supply system of any one of claims 1 to 8, characterized in that: the liquid polishing machine comprises a workbench (408) for mounting a workpiece to be polished, an R-direction rotating mechanism capable of driving the workbench to rotate along an R axis, an X-direction driving mechanism (405) capable of driving the workbench to translate along an X direction, a spray head (410) capable of spraying abrasive materials, a Z-direction driving mechanism (409) capable of driving the spray head to move up and down along a Z direction, a Y-direction driving mechanism (411) capable of driving the spray head to translate along a Y direction and a material returning bin (403);
the abrasive conveying main pipe is communicated with the spray head;
continuously conveying the internal grinding materials to the spray head through the double-cylinder type grinding material supply system and spraying the grinding materials to a workpiece to be polished; the sprayed abrasive flows into a material return bin and falls back to the material return box through the material return branch pipe;
the workpiece is driven to rotate and translate along the X direction by the R direction rotating mechanism and the X direction driving mechanism, and the spray head is driven to move up and down along the Z direction and translate along the Y direction by the Z direction driving mechanism and the Y direction driving mechanism, so that the workpiece is polished in multiple directions.
10. The liquid finisher of claim 9, wherein: the R-direction rotating mechanism comprises an R shaft (407) and a driving motor for driving the R shaft to rotate, the workbench is mounted on the R shaft, or the part of the R shaft is the workbench, and the R shaft is driven to rotate and a workpiece mounted on the R shaft is driven to rotate through the driving motor;
the liquid finishing machine comprises a base (401), two supporting columns (402) and two guide sleeves (404), wherein the supporting columns are fixed on the base, the two guide sleeves are respectively positioned on the two supporting columns, and an R shaft penetrates through the two guide sleeves and can rotate relative to the guide sleeves; the driving motor is installed on the supporting column.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220787931.0U CN218427713U (en) | 2022-04-06 | 2022-04-06 | Double-cylinder type abrasive material supply system and liquid finishing machine adopting same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220787931.0U CN218427713U (en) | 2022-04-06 | 2022-04-06 | Double-cylinder type abrasive material supply system and liquid finishing machine adopting same |
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| CN218427713U true CN218427713U (en) | 2023-02-03 |
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| CN202220787931.0U Active CN218427713U (en) | 2022-04-06 | 2022-04-06 | Double-cylinder type abrasive material supply system and liquid finishing machine adopting same |
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