CN113580282A - Combined damping and pressing equipment for plate processing - Google Patents

Combined damping and pressing equipment for plate processing Download PDF

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Publication number
CN113580282A
CN113580282A CN202110936557.6A CN202110936557A CN113580282A CN 113580282 A CN113580282 A CN 113580282A CN 202110936557 A CN202110936557 A CN 202110936557A CN 113580282 A CN113580282 A CN 113580282A
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CN
China
Prior art keywords
fixed
threaded rod
base
processing
plates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110936557.6A
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Chinese (zh)
Inventor
杜吉祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Weisen Houseware Co ltd
Original Assignee
Jiangsu Weisen Houseware Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Weisen Houseware Co ltd filed Critical Jiangsu Weisen Houseware Co ltd
Priority to CN202110936557.6A priority Critical patent/CN113580282A/en
Publication of CN113580282A publication Critical patent/CN113580282A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27CPLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C9/00Multi-purpose machines; Universal machines; Equipment therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs

Abstract

The invention discloses combined type damping and compressing equipment for processing plates, which comprises a base, wherein supports are symmetrically fixed on two sides of the top surface of the base, a top frame is fixed on the top of each support, a through hole is formed in the center of the end surface of the top frame, a threaded rod penetrates through the through hole, a bottom barrel is sleeved at the bottom of the threaded rod and is fixed on the surface of the base, an adjusting plate is connected onto the threaded rod through threads, guide holes are formed in two sides of one end of the adjusting plate, and a guide rod penetrates through the guide holes; according to the invention, through the designed threaded rod, the adjusting plate and the sliding sleeve, the threaded rod is rotated to realize threaded screwing adjustment with the adjusting plate, so that the free and accurate adjustment of the height of the sliding sleeve provided with the pressing wheel is realized, and the sliding sleeve can be used without depending on sensing equipment, so that the processing cost is low, the use is more reliable, and meanwhile, the sliding sleeve can slide on the adjusting plate, and the adjustment of the horizontal position of the pressing wheel is realized.

Description

Combined damping and pressing equipment for plate processing
Technical Field
The invention belongs to the technical field of plate processing and compressing equipment, and particularly relates to combined damping and compressing equipment for plate processing.
Background
The damping pressing equipment for processing the plates is mainly installed on one side of a plate cutting and processing table, pressing rollers at the end parts press the plates, and accordingly pressing processing of the plates with different thickness specifications is achieved, shaking of the plates in processing is avoided, and processing accuracy of the plates is improved.
The damping pressing equipment for the existing plate machining presses the plate through the pressing roller at the bottom end regulated by the cylinder, but in actual operation, because the equipment realizes height regulation through the cylinder, and then needs various sensors to be combined, thereby further increasing the machining cost of the equipment, and in the plate machining process, the sensor is affected by wood powder, so that the detection failure is easily generated, the problem that the pressing equipment is unreliable in use is caused, and therefore the damping pressing equipment for the combined plate machining is provided.
Disclosure of Invention
The invention aims to provide a combined type damping and pressing device for processing a plate, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a modular panel processing is with shock attenuation equipment that compresses tightly, includes the base, the top surface bilateral symmetry of base is fixed with the support, the top of support is fixed with the roof-rack, the through-hole has been seted up to the terminal surface center department of roof-rack, the threaded rod is run through to the inside of through-hole, the bottom cover of threaded rod is equipped with end section of thick bamboo, end section of thick bamboo is fixed on the surface of base, there is the regulating plate through threaded connection on the threaded rod, the guide hole has all been seted up to the one end both sides of regulating plate, the guide arm has been run through to the inside of guide hole, the guide arm is fixed between roof-rack and base, the outer wall cover of regulating plate is equipped with the sliding sleeve, the bottom mounting of sliding sleeve has the compressing rod, the outside cover of one end of compressing rod is equipped with the connecting cylinder, the bottom of connecting cylinder is fixed with the compressing roller.
Preferably, a supporting frame is fixed on one side of the top frame, grooves in a linear array are formed in the surface of the supporting frame, and spring steel sheets are arranged inside the grooves.
Preferably, the lateral part of the compressing rod is provided with a sliding hole, a sliding block penetrates through the inside of the sliding hole, and the sliding block is fixed in the connecting cylinder.
Preferably, a spring is arranged at the bottom end of the pressing rod and is positioned inside the connecting cylinder.
Preferably, the anti-falling circular grooves are formed in the side walls of the two ends of the threaded rod, the anti-falling columns penetrate through the outer walls of the top frame and the bottom barrel, and one ends of the anti-falling columns are inserted into the corresponding anti-falling circular grooves.
Preferably, a hand wheel is fixed to the top of the threaded rod, and a handle is connected to the hand wheel in a rotating mode.
Preferably, the longitudinal section of the base is of an L-shaped structure, and the surface of the base is provided with a waist-shaped hole.
Preferably, a bottom support is fixed at the bottom of one end of the supporting frame, and a reinforcing support plate is fixed between the bottom support and the top frame.
Compared with the prior art, the invention has the beneficial effects that:
(1) through the designed threaded rod, the adjusting plate and the sliding sleeve, the threaded rod is rotated to realize threaded screwing adjustment with the adjusting plate, so that the height of the sliding sleeve provided with the pressing wheel is freely and accurately adjusted, and the sliding sleeve can be used without depending on sensing equipment, so that the processing cost of the invention is low, the use is more reliable, meanwhile, the sliding sleeve can slide on the adjusting plate, the horizontal position of the pressing wheel is adjusted, the guide rod is designed to guide the adjusting plate in the upper and lower threaded screwing adjustment, the angular rotation is avoided, and the pressing wheel is arranged on the sliding sleeve through the mutual cooperation of the designed pressing rod, the spring and the connecting cylinder, so that the elastic extrusion is generated between the pressing rod and the connecting cylinder when the plate is pressed and damped, and the flexible extrusion is further ensured between the pressing wheel and the plate, avoid its rigid extrusion and cause the damage, through the anticreep post of design, the anticreep post is inserted and is established in the anticreep circular slot of threaded rod, realizes spacing the threaded rod, avoids its follow pull-up to take out in the roof-rack.
(2) Through the supporting frame and the spring steel sheet which are designed, the supporting frame is fixed on one side of the top frame and then combined with a pressing device, the saw blade is hung and placed, the problem that the traditional processed saw blade is inconvenient to store is avoided, meanwhile, the spring steel sheet can be pressed and deformed up and down in the groove, so that the saw blade hung on the supporting frame is blocked and limited, the reinforcing supporting plate is fixed between the bottom support and the top frame through the designed reinforcing supporting plate, the joint of the supporting frame and the top frame is reinforced through absorption, the saw blade is prevented from being broken under the action of the gravity of the saw blade, and the fixing firmness is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the threaded rod and anti-slip post of the present invention;
FIG. 4 is an assembled cross-sectional view of a compression bar and connector barrel of the present invention;
FIG. 5 is an enlarged view of the invention at B in FIG. 1;
in the figure: 1. a base; 2. a bottom cylinder; 3. a guide bar; 4. a threaded rod; 5. a holding frame; 6. an anti-drop column; 7. a top frame; 8. a support; 9. an adjusting plate; 10. a sliding sleeve; 11. pressing the roller; 12. a connecting cylinder; 13. a hold down bar; 14. a slider; 15. an anti-drop circular groove; 16. a spring; 17. a spring steel sheet; 18. a groove; 19. a bottom support; 20. and (5) reinforcing the support plate.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 4, the present invention provides a technical solution: a combined damping and compressing device for processing plates comprises a base 1, wherein supports 8 are symmetrically fixed on two sides of the top surface of the base 1, a top frame 7 is fixed on the top of each support 8, a through hole is formed in the center of the end surface of the top frame 7, a threaded rod 4 penetrates through the through hole, a bottom barrel 2 is sleeved on the bottom of the threaded rod 4, the bottom barrel 2 is fixed on the surface of the base 1, an adjusting plate 9 is connected onto the threaded rod 4 through threads, the threaded rod 4, the adjusting plate 9 and a sliding sleeve 10 are designed, threaded screwing adjustment is realized through rotating the threaded rod 4 and the adjusting plate 9, free and accurate adjustment of the height of the sliding sleeve 10 provided with a compressing wheel 11 is further realized, and the use can be realized without depending on sensing equipment, so that the combined damping and compressing device is low in processing cost and more reliable in use, meanwhile, the sliding sleeve 10 can slide on the adjusting plate 9, and the adjustment of the horizontal position of the compressing roller 11 is realized, guide holes are formed in two sides of one end of an adjusting plate 9, guide rods 3 penetrate through the guide holes, guiding in screwing adjustment of upper threads and lower threads of the adjusting plate 9 is achieved through the designed guide rods 3, angular rotation of the adjusting plate is avoided, the guide rods 3 are fixed between a top frame 7 and a base 1, a sliding sleeve 10 is sleeved on the outer wall of the adjusting plate 9, a pressing rod 13 is fixed at the bottom end of the sliding sleeve 10, a connecting cylinder 12 is sleeved outside one end of the pressing rod 13, a pressing roller 11 is fixed at the bottom of the connecting cylinder 12, a sliding hole is formed in the side portion of the pressing rod 13, a sliding block 14 penetrates through the inside of the sliding hole, the sliding block 14 is fixed in the connecting cylinder 12, a spring 16 is arranged at the bottom end of the pressing rod 13, the pressing roller 11 is mounted on the sliding sleeve 10 through the designed pressing rod 13, spring 16 and connecting cylinder 12 in a matched mode, and when the damping is conducted on a panel, the elastic extrusion is generated between the pressing rod 13 and the connecting cylinder 12, thereby ensuring that the pressing roller 11 and the plate are flexibly extruded and avoiding the plate from being damaged due to hard extrusion, and the spring 16 is positioned inside the connecting cylinder 12.
In this embodiment, it is preferred, anticreep circular slot 15 has all been seted up to the both ends lateral wall of threaded rod 4, roof- rack 7 and 2 outer walls of end section of thick bamboo all run through anticreep post 6, anticreep post 6 through the design, anticreep post 6 is inserted and is established in the anticreep circular slot 15 of threaded rod 4, it is spacing to realize threaded rod 4, avoid its from the pull-up to take out in roof- rack 7, and 6 one end of anticreep post are inserted and are established inside corresponding anticreep circular slot 15, the top of threaded rod 4 is fixed with the hand wheel, be connected with the handle through rotating on the hand wheel, base 1's longitudinal section is L type structure, base 1 has seted up waist type hole on the surface.
Example 2
Referring to fig. 1 to 5, the present invention provides a technical solution: a combined damping and compressing device for processing plates comprises a base 1, wherein supports 8 are symmetrically fixed on two sides of the top surface of the base 1, a top frame 7 is fixed on the top of each support 8, a through hole is formed in the center of the end surface of the top frame 7, a threaded rod 4 penetrates through the through hole, a bottom barrel 2 is sleeved on the bottom of the threaded rod 4, the bottom barrel 2 is fixed on the surface of the base 1, an adjusting plate 9 is connected onto the threaded rod 4 through threads, the threaded rod 4, the adjusting plate 9 and a sliding sleeve 10 are designed, threaded screwing adjustment is realized through rotating the threaded rod 4 and the adjusting plate 9, free and accurate adjustment of the height of the sliding sleeve 10 provided with a compressing wheel 11 is further realized, and the use can be realized without depending on sensing equipment, so that the combined damping and compressing device is low in processing cost and more reliable in use, meanwhile, the sliding sleeve 10 can slide on the adjusting plate 9, and the adjustment of the horizontal position of the compressing roller 11 is realized, guide holes are formed in two sides of one end of an adjusting plate 9, guide rods 3 penetrate through the guide holes, guiding in screwing adjustment of upper threads and lower threads of the adjusting plate 9 is achieved through the designed guide rods 3, angular rotation of the adjusting plate is avoided, the guide rods 3 are fixed between a top frame 7 and a base 1, a sliding sleeve 10 is sleeved on the outer wall of the adjusting plate 9, a pressing rod 13 is fixed at the bottom end of the sliding sleeve 10, a connecting cylinder 12 is sleeved outside one end of the pressing rod 13, a pressing roller 11 is fixed at the bottom of the connecting cylinder 12, a sliding hole is formed in the side portion of the pressing rod 13, a sliding block 14 penetrates through the inside of the sliding hole, the sliding block 14 is fixed in the connecting cylinder 12, a spring 16 is arranged at the bottom end of the pressing rod 13, the pressing roller 11 is mounted on the sliding sleeve 10 through the designed pressing rod 13, spring 16 and connecting cylinder 12 in a matched mode, and when the damping is conducted on a panel, the elastic extrusion is generated between the pressing rod 13 and the connecting cylinder 12, thereby ensuring that the pressing roller 11 and the plate are flexibly extruded and avoiding the plate from being damaged due to hard extrusion, and the spring 16 is positioned inside the connecting cylinder 12.
In this embodiment, it is preferred, anticreep circular slot 15 has all been seted up to the both ends lateral wall of threaded rod 4, roof- rack 7 and 2 outer walls of end section of thick bamboo all run through anticreep post 6, anticreep post 6 through the design, anticreep post 6 is inserted and is established in the anticreep circular slot 15 of threaded rod 4, it is spacing to realize threaded rod 4, avoid its from the pull-up to take out in roof- rack 7, and 6 one end of anticreep post are inserted and are established inside corresponding anticreep circular slot 15, the top of threaded rod 4 is fixed with the hand wheel, be connected with the handle through rotating on the hand wheel, base 1's longitudinal section is L type structure, base 1 has seted up waist type hole on the surface.
In the embodiment, preferably, a supporting frame 5 is fixed on one side of the top frame 7, the supporting frame 5 is fixed on one side of the top frame 7 through the designed supporting frame 5 and a spring steel sheet 17, and then the supporting frame 5 is combined with a pressing device to realize the suspension placement of the saw blade, so that the inconvenience of storing the traditional processed saw blade is avoided, meanwhile, the spring steel sheet 17 can be pressed and deformed up and down in the groove 18, so that the saw blade suspended on the supporting frame 5 is blocked and limited, the surface of the supporting frame 5 is provided with a linear array of grooves 18, the spring steel sheet 17 is arranged inside the grooves 18, the bottom of one end of the supporting frame 5 is fixed with a bottom support 19, a reinforcing support plate 20 is fixed between the bottom support 19 and the top frame 7, the reinforcing support plate 20 is fixed between the bottom support 19 and the top frame 7 through the designed reinforcing support plate 20, and further the joint of the supporting frame 5 and the top frame 7 is reinforced, the saw blade is prevented from being broken under the action of the gravity of the saw blade, and the fixing firmness of the saw blade is improved.
The working principle and the using process of the invention are as follows: when the invention is used, the threaded rod 4 is rotated by the hand wheel, the threaded screwing adjustment is realized by rotating the threaded rod 4 and the adjusting plate 9, so that the adjusting plate 9 can be adjusted in height, the height of the sliding sleeve 10 provided with the pressing wheel 11 can be freely and accurately adjusted, the sliding sleeve is pressed on a plate to be processed, and the use can be realized without depending on sensing equipment, so that the invention has the advantages of low processing cost and more reliable use, meanwhile, the sliding sleeve 10 can slide on the adjusting plate 9, the horizontal position of the pressing roller 11 can be adjusted, when the pressing and shock absorption are carried out, the pressing rod 13, the spring 16 and the connecting cylinder 12 are mutually matched to install the pressing roller 11 on the sliding sleeve 10, and the invention is ensured that when the plate is pressed and shock absorbed, the spring 16 is positioned between the pressing rod 13 and the connecting cylinder 12 to generate elastic extrusion, thereby ensuring that the pressing roller 11 and the plate are flexibly extruded, the invention can prevent the saw blade from being damaged due to hard extrusion, when in use, the saw blade can be sleeved on the support frame 5, and when in suspension, an operator presses down the spring steel sheet 17 to press the spring steel sheet 17 into the groove 18, thereby avoiding the obstruction of the suspension placement of the saw blade sleeved on the support frame 5.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a modular panel processing compresses tightly equipment with shock attenuation, includes base (1), the top surface bilateral symmetry of base (1) is fixed with support (8), the top of support (8) is fixed with roof-rack (7), its characterized in that: the through-hole has been seted up in the terminal surface center department of roof-rack (7), threaded rod (4) is run through to the inside of through-hole, the bottom cover of threaded rod (4) is equipped with end section of thick bamboo (2), end section of thick bamboo (2) are fixed on the surface of base (1), threaded rod (4) are gone up through threaded connection has regulating plate (9), the guide hole has all been seted up to the one end both sides of regulating plate (9), guide arm (3) have been run through to the inside of guide hole, guide arm (3) are fixed between roof-rack (7) and base (1), the outer wall cover of regulating plate (9) is equipped with sliding sleeve (10), the bottom mounting of sliding sleeve (10) has compressing rod (13), the outside cover of one end that compresses tightly pole (13) is equipped with connecting cylinder (12), the bottom of connecting cylinder (12) is fixed with compressing roller (11).
2. The combined type damping and compacting equipment for processing the plates as claimed in claim 1, wherein: a supporting frame (5) is fixed on one side of the top frame (7), grooves (18) in a linear array are formed in the surface of the supporting frame (5), and spring steel sheets (17) are arranged inside the grooves (18).
3. The combined type damping and compacting equipment for processing the plates as claimed in claim 1, wherein: the lateral part of the compressing rod (13) is provided with a sliding hole, a sliding block (14) penetrates through the inside of the sliding hole, and the sliding block (14) is fixed in the connecting cylinder (12).
4. The combined type damping and compacting equipment for processing the plates as claimed in claim 3, wherein: the bottom end of the pressing rod (13) is provided with a spring (16), and the spring (16) is located inside the connecting cylinder (12).
5. The combined type damping and compacting equipment for processing the plates as claimed in claim 1, wherein: anticreep circular slot (15) have all been seted up to the both ends lateral wall of threaded rod (4), anti-disengaging post (6) have all been run through to roof-rack (7) and end section of thick bamboo (2) outer wall, just anti-disengaging post (6) one end insert and establish inside corresponding anticreep circular slot (15).
6. The combined type damping and compacting equipment for processing the plates as claimed in claim 5, wherein: the top of threaded rod (4) is fixed with the hand wheel, be connected with the handle through rotating on the hand wheel.
7. The combined type damping and compacting equipment for processing the plates as claimed in claim 1, wherein: the longitudinal section of the base (1) is of an L-shaped structure, and waist-shaped holes are formed in the surface of the base (1).
8. The combined type damping and compacting equipment for processing the plates as claimed in claim 2, wherein: a bottom support (19) is fixed at the bottom of one end of the supporting frame (5), and a reinforcing support plate (20) is fixed between the bottom support (19) and the top frame (7).
CN202110936557.6A 2021-08-16 2021-08-16 Combined damping and pressing equipment for plate processing Pending CN113580282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110936557.6A CN113580282A (en) 2021-08-16 2021-08-16 Combined damping and pressing equipment for plate processing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110936557.6A CN113580282A (en) 2021-08-16 2021-08-16 Combined damping and pressing equipment for plate processing

Publications (1)

Publication Number Publication Date
CN113580282A true CN113580282A (en) 2021-11-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110936557.6A Pending CN113580282A (en) 2021-08-16 2021-08-16 Combined damping and pressing equipment for plate processing

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CN (1) CN113580282A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU1790484C (en) * 1991-04-29 1993-01-23 Малое научно-производственное предприятие "СПИН" Holding-down contrivance of woodworking machine tool
KR20120061410A (en) * 2010-12-03 2012-06-13 김진수 Apparatus for trimming edge-band of edge-banding machine
CN107814197A (en) * 2017-09-14 2018-03-20 合肥惠科金扬科技有限公司 A kind of more batch AMOLED LCD screens compress storing unit
CN208410122U (en) * 2018-06-27 2019-01-22 灌云德尼雅木业有限公司 A kind of furniture board cutter device
CN109333709A (en) * 2018-12-06 2019-02-15 洪江市三哥竹业有限责任公司 A kind of bamboo basket production bamboo chip steaming apparatus
CN211440344U (en) * 2019-09-18 2020-09-08 广州珠江恺撒堡钢琴有限公司 Hammer head wood core arc milling machine
CN112440337A (en) * 2019-08-27 2021-03-05 潜山大兴木业有限公司 Plate cutting device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU1790484C (en) * 1991-04-29 1993-01-23 Малое научно-производственное предприятие "СПИН" Holding-down contrivance of woodworking machine tool
KR20120061410A (en) * 2010-12-03 2012-06-13 김진수 Apparatus for trimming edge-band of edge-banding machine
CN107814197A (en) * 2017-09-14 2018-03-20 合肥惠科金扬科技有限公司 A kind of more batch AMOLED LCD screens compress storing unit
CN208410122U (en) * 2018-06-27 2019-01-22 灌云德尼雅木业有限公司 A kind of furniture board cutter device
CN109333709A (en) * 2018-12-06 2019-02-15 洪江市三哥竹业有限责任公司 A kind of bamboo basket production bamboo chip steaming apparatus
CN112440337A (en) * 2019-08-27 2021-03-05 潜山大兴木业有限公司 Plate cutting device
CN211440344U (en) * 2019-09-18 2020-09-08 广州珠江恺撒堡钢琴有限公司 Hammer head wood core arc milling machine

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Application publication date: 20211102