CN112476507B - Anti-deformation rapid separation cutting equipment for injection molding pipe fitting - Google Patents
Anti-deformation rapid separation cutting equipment for injection molding pipe fitting Download PDFInfo
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- CN112476507B CN112476507B CN202011390437.2A CN202011390437A CN112476507B CN 112476507 B CN112476507 B CN 112476507B CN 202011390437 A CN202011390437 A CN 202011390437A CN 112476507 B CN112476507 B CN 112476507B
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- pipe fitting
- ring
- fixedly connected
- pipe
- fitting placing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/42—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between work feed and clamp
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
- B26D7/0608—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by pushers
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses anti-deformation rapid separation cutting equipment for injection molding pipe fittings, which comprises a processing base, wherein the top of the processing base is fixedly connected with a processing disc, an annular groove is formed in the processing disc, an annular rotating ring is rotatably connected in the annular groove, a plurality of pipe fitting placing plates which are uniformly distributed are arranged above the annular rotating ring, a pipe fitting anti-deformation mechanism is arranged on each pipe fitting placing plate, and a collision opening assembly is arranged on the processing disc. According to the pipe fitting placing device, the pipe fittings to be separated and processed are placed in the corresponding pipe fitting placing grooves in the pipe fitting placing plate, the pipe fitting placing plate is enabled to rotate along with the annular rotating ring under the action of the servo motor through the intermittent transmission mechanism, so that the inner support columns arranged on two sides of the pipe fitting placing groove can automatically and gradually enter the pipe fittings, the pipe fittings are internally supported, pressure generated during cutting cannot deform the pipe fittings, and the processing efficiency can be effectively improved through automatic conveying, automatic inner support and automatic cutting.
Description
Technical Field
The invention relates to the technical field of anti-deformation cutting of injection-molded pipes, in particular to anti-deformation rapid separation and cutting equipment for injection-molded pipes.
Background
Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. The injection molding can also be divided into injection molding and die casting; an injection molding machine (an injection machine or an injection molding machine for short) is main molding equipment for manufacturing thermoplastic plastics or thermosetting materials into plastic products with various shapes by utilizing a plastic molding die, and the injection molding is realized by the injection molding machine and the die; the plastic pipeline is steadily developed, and PE pipes, PP-R pipes and UPVC pipes all occupy a place, wherein the strong development momentum of the PE pipes is most remarkable. PE pipe's application is extensive. The water supply pipe and the gas pipe are two largest application markets. The chemical name of PE is polyethylene, and PE materials are widely applied to the field of water supply pipe manufacturing due to the characteristics of high strength, high temperature resistance, corrosion resistance, no toxicity and the like. Because it will not rust, so it is an ideal pipe material to replace the common iron water supply pipe;
in the processing process of the plastic pipe fittings, the processing is usually realized by adopting an injection molding mode, in order to ensure the production efficiency and the qualification rate, when the small pipe fittings are subjected to injection molding processing, a plurality of small pipe fittings are often injected together through a mold, the injection molding steps are saved, thus the production efficiency of the injection molding can be accelerated, but the pipe fittings need to be cut and separated in the later period for subsequent processing, when some pipe fittings with special materials and shapes are cut through equipment, the pipeline is easy to deform and break due to the extrusion of a cutting edge, so that the pipeline can be cut and separated only through manually slowly operating the equipment, the efficiency is very low while a large amount of manpower and material resources are consumed, therefore, the anti-deformation quick separation cutting equipment for the injection molding pipe fittings is provided, and the lining fittings can automatically stretch into the pipe fittings, the pipe fitting is prevented from being deformed during cutting.
Disclosure of Invention
The invention aims to solve the defects that when some existing pipe fittings made of special materials and in special shapes are cut by equipment, pipelines are easy to deform and break due to extrusion of a cutting edge, the equipment can only be slowly operated manually to separate when the pipelines are cut and separated, a large amount of manpower and material resources are consumed, and the efficiency is very low.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a be used for anti-deformation of injection molding pipe fitting to separate cutting equipment fast, includes the processing base, processing base top fixedly connected with processing dish, the ring channel has been seted up on the processing dish, the ring channel internal rotation is connected with annular rotating ring, annular rotating ring top is provided with a plurality of pipe fittings that are evenly distributed and places the board, the pipe fitting is placed and is provided with pipe fitting anti-deformation mechanism on the board, it opens the subassembly to be provided with the conflict on the processing dish, the transmission chamber has been seted up in the processing base, transmission chamber bottom is provided with servo motor, the servo motor output passes through intermittent type drive mechanism and annular rotating ring connection, processing dish lateral wall is provided with the support frame, support frame lateral wall fixedly connected with mounting panel, be provided with on the mounting panel and cut off partition mechanism.
Preferably, the pipe fitting deformation prevention mechanism comprises pipe fitting placing grooves formed in the pipe fitting placing plate, the pipe fitting placing grooves are communicated with each other through separating grooves formed in the pipe fitting placing plate, the inner wall of each pipe fitting placing groove is provided with a moving hole penetrating through the corresponding side wall, the inner side wall of each moving hole is connected with a cylindrical inner supporting column in a sliding mode, and one end of each inner supporting column is arranged in a hemispherical mode.
Preferably, the subassembly is opened in contradicting includes that fixed connection contacts ring and arc ring on the processing dish, the ring is touched including interior touching ring and outer touching ring to the touching ring, the arc ring is including interior arc ring and outer arc ring.
Preferably, interior stay post tip fixedly connected with spacing ring, the board lateral wall is placed with the pipe fitting to the answer spring that the spacing ring was established on the inner stay lateral wall through the cover and is connected, spacing ring tip fixedly connected with conflict post different in size, conflict post tip is provided with the gyro wheel of contradicting.
Preferably, intermittent type drive mechanism includes the rotation axis of fixed connection at the servo motor output, rotation axis tip fixedly connected with positioning disk, the rotation axis lateral wall is connected with the drive post that is vertical setting through the connecting rod, be provided with the intermittent type rolling disc in the transmission intracavity, set up a plurality of locating ports with positioning disk looks adaptation on the intermittent type rolling disc, adjacent set up the drive mouth with drive post looks adaptation between the locating port.
Preferably, a gear groove is formed in the inner side wall of the annular groove, a transmission shaft is rotatably connected in the gear groove, the bottom of the transmission shaft penetrates through the transmission cavity and is fixedly connected with the intermittent rotating disc, a transmission gear is fixedly connected to the top of the transmission shaft, a straight tooth layer is arranged on the inner side wall of the annular rotating ring, and the straight tooth layer is meshed with the transmission gear.
Preferably, the cutting and separating mechanism comprises a hydraulic cylinder arranged on the mounting plate, the end part of the output end of the hydraulic cylinder penetrates through the mounting plate and extends downwards and is connected with a cutting plate, and the bottom of the cutting plate is provided with a cutting edge matched with the pipe fitting placing groove.
Preferably, a connector is formed in the end of the contact column, a connecting shaft is fixedly connected in the connector, and the contact roller is sleeved on the outer side wall of the connecting shaft.
Compared with the prior art, the invention has the beneficial effects that:
to wait to separate the pipe fitting of processing and place the pipe fitting and place the corresponding pipe fitting standing groove on the board, make the pipe fitting place the board and follow the rotatory ring of annular and rotate under servo motor's effect through intermittent drive mechanism, the conflict gyro wheel that sets up on the board is placed to the pipe fitting can be under the effect with arc ring and conflict ring on the processing dish, make the inside that the interior prop post that sets up in pipe fitting standing groove both sides can automatic gradual entering pipe fitting, thereby carry out inside support to pipe fitting, when the pipe fitting is when the cutting edge cutting that drives through the pneumatic cylinder, can realize the cutting, because the pipe fitting inner wall supports through the interior prop post, make the pressure that produces when the cutting, can not cause the deformation to the pipe fitting, thereby avoid producing the wastrel, and through automatic transport, automatic interior prop and automatic cutout can effectual promotion machining efficiency.
Drawings
Fig. 1 is a schematic structural diagram of an anti-deformation rapid separation and cutting device for injection molding pipe fittings, which is provided by the invention;
fig. 2 is a schematic structural view of a top cross section of the anti-deformation rapid separation and cutting device for the injection molding pipe fitting, which is provided by the invention;
fig. 3 is a schematic structural diagram of an intermittent transmission mechanism in the anti-deformation rapid separation cutting equipment for the injection molding pipe fitting provided by the invention.
In the figure: the device comprises a processing base 1, a processing disc 2, an annular rotating ring 3, a pipe placing plate 4, a transmission cavity 5, a servo motor 6, a supporting frame 7, an installation plate 8, a separation groove 9, a pipe placing groove 10, an inner supporting column 11, a contact ring 12, an arc ring 13, a limiting ring 14, a return spring 15, a contact column 16, a contact roller 17, a rotating shaft 18, a positioning disc 19, a driving column 20, an intermittent rotating disc 21, a positioning opening 22, a driving opening 23, a transmission shaft 24, a transmission gear 25, a straight tooth layer 26, a hydraulic cylinder 27, a cutting plate 28, a cutting edge 29 and a connecting shaft 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, an anti-deformation fast-separating cutting device for injection molding pipe fittings comprises a processing base 1, a processing disc 2 is fixedly connected to the top of the processing base 1, an annular groove is formed in the processing disc 2, an annular rotating ring 3 is rotatably connected in the annular groove, a plurality of pipe fitting placing plates 4 are uniformly distributed above the annular rotating ring 3, the pipe fitting placing plates 4 are detachably connected with the annular rotating ring 3 through bolts, so that different pipe fitting placing plates 4 can be replaced for use when pipe fittings of different shapes are cut, a pipe fitting anti-deformation mechanism is arranged on each pipe fitting placing plate 4, further, the pipe fitting anti-deformation mechanism comprises pipe fitting placing grooves 10 formed in the pipe fitting placing plates 4, wherein the size of each pipe fitting placing groove 10 is matched with the size of each pipe fitting, and the pipe fitting placing grooves 10 are communicated through separating grooves 9 formed in the pipe fitting placing plates 4, the removal hole that runs through the lateral wall is seted up to pipe fitting standing groove 10 inner wall, removes downthehole lateral wall sliding connection and has to be cylindric interior vaulting pole 11, and interior vaulting pole 11 one end is the hemisphere setting, sets up through the hemisphere for interior vaulting pole 11 can fix a position the pipe fitting when entering into the pipe fitting, avoids the pipe fitting slope, guarantees cutting man-hour, can guarantee the accuracy of pipe fitting cutting, improves the yield.
The processing disc 2 is provided with a conflict opening assembly, further, the conflict opening assembly comprises a conflict ring 12 and an arc ring 13 which are fixedly connected to the processing disc 2, the annular rotating ring 3 drives the pipe fitting placing plate 4 to move to a conflict roller 17 to be separated from the conflict ring 12, under the action of the return spring 15, the limiting ring 14 can drive the inner supporting column 11 to move outwards, so that the inner supporting column 11 can be separated from the pipe fitting by itself, workers can take and place the pipe fitting conveniently, the conflict ring 12 comprises an inner conflict ring and an outer conflict ring, and the arc ring 13 comprises an inner arc ring and an outer arc ring; still further, 11 tip fixedly connected with spacing rings 14 of interior stay, the return spring 15 that spacing rings 14 established on 11 lateral walls of interior stay through the cover places 4 lateral walls of board with the pipe fitting and is connected, 14 tip fixedly connected with conflict posts 16 different in length of spacing rings, 16 tip of conflict post are provided with conflict gyro wheel 17, 16 tip of conflict post have seted up the connector, fixedly connected with connecting axle 30 in the connector, conflict gyro wheel 17 cover is established on the connecting axle 30 lateral wall.
A transmission cavity 5 is arranged in the processing base 1, a servo motor 6 is arranged at the bottom of the transmission cavity 5, the servo motor 6 is the prior art, and will not be described in detail herein, the output end of the servo motor 6 is connected with the annular rotating ring 3 through an intermittent transmission mechanism, the annular rotating ring 3 drives the pipe placing plate 4 to realize intermittent movement through an intermittent transmission mechanism, thereby guarantee when board 4 stops is placed to the pipe fitting, can cut off through cutting edge 29, furtherly, intermittent drive mechanism includes the rotation axis 18 of fixed connection at servo motor 6 output, 18 end fixedly connected with positioning disk 19 of rotation axis, 18 lateral walls of rotation axis are connected with the drive post 20 that is vertical setting through the connecting rod, be provided with intermittent rotation dish 21 in the transmission chamber 5, set up a plurality of locating openings 22 with 19 looks adaptations of positioning disk on the intermittent rotation dish 21, set up the drive mouth 23 with 20 looks adaptations of drive post between the adjacent locating opening 22.
Still further, the gear groove has been seted up to the ring channel inside wall, and the gear inslot swivelling joint has transmission shaft 24, and transmission shaft 24 bottom runs through to in the transmission chamber 5 to with intermittent type rolling disc 21 fixed connection, transmission shaft 24 top fixed connection has drive gear 25, and annular rotating ring 3 inside wall is provided with straight tooth layer 26, and straight tooth layer 26 is connected with drive gear 25 meshing.
A support frame 7 is arranged on the side wall of the processing disc 2, an installation plate 8 is fixedly connected to the side wall of the support frame 7, and a cutting separation mechanism is arranged on the installation plate 8; further, cut off partition mechanism including setting up the pneumatic cylinder 27 on mounting panel 8, pneumatic cylinder 27 output tip runs through mounting panel 8 downwardly extending to be connected with cutting plate 28, cutting plate 28 bottom is provided with the cutting edge 29 with pipe fitting standing groove 10 looks adaptation, and the shape of its cutting edge 29 can be rationally changed according to the unnecessary position of pipe fitting, guarantees the cutting to the pipe fitting.
When the invention is processed, an injection molding pipe to be processed which is matched with the pipe placing groove 10 is placed on the pipe placing plate 4, the servo motor 6 is started, the rotating shaft 18 which is connected with the output end of the servo motor 6 can drive the positioning disc 19 and the driving column 20 which is connected with the connecting rod to rotate, so that the intermittent rotating disc 21 which is in transmission connection with the positioning disc 21 intermittently rotates, the transmission gear 25 drives the annular rotating ring 3 which is connected with the annular rotating ring through the straight tooth layer 26 to intermittently rotate under the action of the transmission shaft 24, the pipe placing plate 4 which is positioned on the annular rotating ring 3 can be driven to move when the pipe placing plate 4 rotates, when the pipe placing plate 4 moves, the collision roller 17 which is arranged on the side wall of the pipe placing plate can gradually move towards the collision ring 12 through the arc ring 13, and in the process, the blocking of the arc ring 13 can enable the collision roller 17 to gradually move towards the pipe placing plate 4, the inner supporting column 11 connected with the contact column 16 is driven by the contact roller 17 to move inwards, and when the inner supporting column 11 moves inwards, the inner supporting column gradually moves into the pipe to be processed in the pipe placing groove 10, so that the inner wall of the pipe is supported, and the pipe to be processed can be prevented from deforming during cutting;
under the drive of the servo motor 6, the pipe placing plate 4 gradually drives the pipe supported by the inner supporting column 11 to move intermittently, when the pipe moves to the position below the cutting plate 28, the control device controls the output end of the hydraulic cylinder 27 to stretch out, the cutting plate 28 connected with the end part of the output end of the hydraulic cylinder 27 enables the cutting edge 29 on the cutting plate to cut the connecting part of the pipe when moving downwards, the inner wall of the pipe at the moment can be supported by the inner supporting column 11, when the pipe is cut, the deformation of the pipe can be effectively avoided, and the processing efficiency of the pipe can be effectively improved through automatic cutting;
after the completion cutting, when rotatory ring 3 of annular drove the pipe fitting and place board 4 and remove conflict gyro wheel 17 and conflict ring 12 and break away from, under the effect of replying spring 15 for prop post 11 and outwards remove in spacing ring 14 can drive, thereby prop post 11 in making and break away from with the pipe fitting by oneself, make things convenient for the staff to take and place the pipe fitting, effectively accelerate production efficiency.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. A deformation-preventing rapid separation cutting-off device for injection molding pipe fittings comprises a processing base (1) and is characterized in that the top of the processing base (1) is fixedly connected with a processing disc (2), a ring groove is formed in the processing disc (2), an annular rotating ring (3) is rotationally connected in the ring groove, a plurality of pipe fitting placing plates (4) which are uniformly distributed are arranged above the annular rotating ring (3), a pipe fitting deformation-preventing mechanism is arranged on each pipe fitting placing plate (4), a collision opening assembly is arranged on the processing disc (2), a transmission cavity (5) is formed in the processing base (1), a servo motor (6) is arranged at the bottom of the transmission cavity (5), the output end of the servo motor (6) is connected with the annular rotating ring (3) through an intermittent transmission mechanism, and a support frame (7) is arranged on the side wall of the processing disc (2), the side wall of the support frame (7) is fixedly connected with an installation plate (8), and a cutting separation mechanism is arranged on the installation plate (8);
the pipe fitting deformation preventing mechanism comprises pipe fitting placing grooves (10) formed in a pipe fitting placing plate (4), the pipe fitting placing grooves (10) are communicated with each other through separating grooves (9) formed in the pipe fitting placing plate (4), moving holes penetrating through the side walls are formed in the inner walls of the pipe fitting placing grooves (10), cylindrical inner support columns (11) are connected to the inner side walls of the moving holes in a sliding mode, and one ends of the inner support columns (11) are arranged in a hemispherical mode;
the collision opening assembly comprises a collision ring (12) and an arc-shaped ring (13) which are fixedly connected to the processing disc (2), the collision ring (12) comprises an inner collision ring and an outer collision ring, and the arc-shaped ring (13) comprises an inner arc-shaped ring and an outer arc-shaped ring;
the end part of the inner supporting column (11) is fixedly connected with a limiting ring (14), the limiting ring (14) is connected with the side wall of the pipe fitting placing plate (4) through a return spring (15) sleeved on the outer side wall of the inner supporting column (11), the end part of the limiting ring (14) is fixedly connected with contact columns (16) with different lengths, and the end part of each contact column (16) is provided with a contact roller (17);
the intermittent transmission mechanism comprises a rotating shaft (18) fixedly connected to the output end of the servo motor (6), the end part of the rotating shaft (18) is fixedly connected with a positioning disc (19), the outer side wall of the rotating shaft (18) is connected with a vertically arranged driving column (20) through a connecting rod, an intermittent rotating disc (21) is arranged in the transmission cavity (5), a plurality of positioning ports (22) matched with the positioning disc (19) are formed in the intermittent rotating disc (21), and a driving port (23) matched with the driving column (20) is formed between every two adjacent positioning ports (22);
a gear groove is formed in the inner side wall of the annular groove, a transmission shaft (24) is rotatably connected in the gear groove, the bottom of the transmission shaft (24) penetrates into the transmission cavity (5) and is fixedly connected with the intermittent rotating disc (21), a transmission gear (25) is fixedly connected to the top of the transmission shaft (24), a straight tooth layer (26) is arranged on the inner side wall of the annular rotating ring (3), and the straight tooth layer (26) is meshed with the transmission gear (25);
the cutting and separating mechanism comprises a hydraulic cylinder (27) arranged on the mounting plate (8), the end part of the output end of the hydraulic cylinder (27) penetrates through the mounting plate (8) to extend downwards and is connected with a cutting plate (28), and the bottom of the cutting plate (28) is provided with a cutting edge (29) matched with the pipe fitting placing groove (10);
the connector has been seted up to conflict post (16) tip, fixedly connected with connecting axle (30) in the connecting axle, conflict gyro wheel (17) cover is established on connecting axle (30) lateral wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011390437.2A CN112476507B (en) | 2020-12-02 | 2020-12-02 | Anti-deformation rapid separation cutting equipment for injection molding pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011390437.2A CN112476507B (en) | 2020-12-02 | 2020-12-02 | Anti-deformation rapid separation cutting equipment for injection molding pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112476507A CN112476507A (en) | 2021-03-12 |
| CN112476507B true CN112476507B (en) | 2022-03-25 |
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| CN202011390437.2A Active CN112476507B (en) | 2020-12-02 | 2020-12-02 | Anti-deformation rapid separation cutting equipment for injection molding pipe fitting |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7275469B2 (en) * | 2004-07-14 | 2007-10-02 | Axon Llc | Planetary tubing cutter |
| CN107378097B (en) * | 2017-09-06 | 2018-12-18 | 无锡市永兴金属软管有限公司 | A kind of compression-resistant type metal hose cutter device |
| CN208322289U (en) * | 2018-06-07 | 2019-01-04 | 上海利生机电工程有限公司 | Clamping device is used in a kind of cutting of floor heating heating tube |
| CN108608052A (en) * | 2018-07-26 | 2018-10-02 | 张家港市方圆管业制造有限公司 | A kind of Bundy tube school circle cutting means |
| CN211659880U (en) * | 2020-01-17 | 2020-10-13 | 上海汉尼生物细胞技术有限公司 | Reagent mixing arrangement for slow virus packing experiments |
| CN111890214B (en) * | 2020-06-24 | 2021-11-30 | 湖南鑫铂利科技有限公司 | Hardware pipe polishing device |
| CN111993472B (en) * | 2020-08-14 | 2022-04-08 | 淮北开策机械科技有限公司 | Equal-length roll paper segmenting equipment |
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2020
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