CN213052813U - Movable punching device for air energy water heater metal plate die - Google Patents

Movable punching device for air energy water heater metal plate die Download PDF

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Publication number
CN213052813U
CN213052813U CN202022012233.7U CN202022012233U CN213052813U CN 213052813 U CN213052813 U CN 213052813U CN 202022012233 U CN202022012233 U CN 202022012233U CN 213052813 U CN213052813 U CN 213052813U
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China
Prior art keywords
punching
motor
workbench
rod
water heater
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CN202022012233.7U
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Chinese (zh)
Inventor
刘青锋
李嘉诚
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Guangzhou Tehaodi Electrical Technology Co ltd
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Guangzhou Tehaodi Electrical Technology Co ltd
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Abstract

The utility model discloses a movable punching device for an air energy water heater metal plate die, which comprises a workbench and supporting columns, wherein the four corners of the bottom of the workbench are fixedly provided with the supporting columns, the top of the workbench is fixedly provided with an adjusting mechanism convenient for moving the working position, the output end of the adjusting mechanism is fixedly provided with a punching mechanism convenient for cutting, the center of the top of the workbench is fixedly provided with a feeding mechanism convenient for feeding, the bottom of the workbench is provided with a collecting mechanism convenient for collecting cutting scraps, and the four corners of the collecting mechanism are respectively fixedly arranged at the side edges of the supporting columns, the movable punching device for the air energy water heater metal plate die has simple structure and convenient operation, can quickly realize punching on an object, and the mutual matching of the feeding mechanism, the adjusting mechanism and the punching mechanism can complete the surface punching work of the semi-automatic object, the utility of this equipment is higher.

Description

Movable punching device for air energy water heater metal plate die
Technical Field
The utility model relates to a water heater panel beating mould technical field that punches specifically is an activity perforating device that air energy water heater panel beating mould was used.
Background
The water heater is a device which can increase the temperature of cold water into hot water in a certain time by various physical principles. According to different principles, the water heater can be divided into an electric water heater, a gas water heater, a solar water heater, a magnetic water heater, an air energy water heater, a heating water heater and the like, and a cold air part and a hot water part are manufactured. In fact, the two parts are closely related and inseparable, and must work simultaneously. I.e. hot water is produced while cooling the kitchen. Or to produce hot water while cooling the galley.
In the production process of the metal plate mould of the existing water heater, holes need to be punched so as to produce parts of the water heater in the subsequent process, but the holes in the metal plate mould are not in the same position, so the holes need to be moved so as to be punched.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can stably carry out the movable perforating device that air energy water heater panel beating mould of translation processing of punching was used to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an activity perforating device that air can water heater panel beating mould was used, includes workstation and support column, the equal fixed mounting in bottom four corners of workstation has the support column, the top fixed mounting of workstation is convenient for remove operating position's adjustment mechanism, adjustment mechanism's output fixed mounting has the convenient mechanism of punching of cutting, the top central authorities fixed mounting of workstation has the feed mechanism of the feeding of being convenient for, the bottom of workstation is equipped with the collection mechanism of being convenient for carry out the collection to the cutting piece, and the four corners difference fixed mounting of collecting the mechanism is at the side of support column.
Preferably, the adjusting mechanism comprises a screw rod, a vertical moving motor, rotating grooves, sliding blocks, a support frame, a transverse moving motor, a threaded rod, a moving rod, a transmission belt and a transmission block, wherein two rotating grooves are symmetrically formed in the top end of the workbench, the two rotating grooves are connected with the screw rod through the rotating shaft in a rotating manner, one end of the screw rod penetrates through the side wall of the workbench and is fixedly provided with the transmission block, the vertical moving motor is fixedly arranged at one end of the bottom of the workbench, the transmission belt is sleeved on the output end of the vertical moving motor and the outer side of the transmission block, the screw rod is connected with the sliding block in a meshing manner, the sliding block is connected with the inside of the rotating groove in a sliding manner, the tops of the two sliding blocks are respectively fixedly connected with the bottom of the support frame, the top end of the support frame is connected, the output end of the transverse moving motor is fixedly connected with one end of the threaded rod, a moving rod is arranged below the threaded rod, and the moving rod is fixedly installed at the top end of the supporting frame.
Preferably, the mechanism of punching is including removing seat, cylinder, gag lever post, mounting panel, motor cabinet, the motor of punching and the head of punching, the meshing is connected with on the threaded rod and removes the seat, and removes the bottom of seat and seted up the through-hole, remove seat sliding connection on the carriage release lever, the both ends symmetry fixed mounting who removes the seat has the cylinder, two the output of cylinder respectively with the both ends fixed connection of mounting panel, the equal fixed mounting in top of mounting panel has the gag lever post, the through-hole has all been seted up in the four corners of removing the seat, the gag lever post is pegged graft in the four corners through-hole of removing the seat, the bottom fixed mounting of mounting panel has the motor cabinet, the inside fixed mounting of motor cabinet has the motor of punching, the output fixed mounting of the motor of.
Preferably, feed mechanism includes mounting groove, feeding roller, mount, push down cylinder, pull rod, grip block, movable plate and cooperation groove, the bottom central symmetry fixed mounting of workstation has the mount, fixed mounting has push down cylinder on the mount, the equal fixed mounting of output of push down cylinder has the movable plate, movable plate sliding connection is on the workstation, and the middle part of workstation set up with the cooperation groove of movable plate mutually supporting, the equal fixed mounting in both ends of movable plate has the pull rod, the inside symmetry sliding connection of workstation has the grip block, the top symmetry fixed mounting of movable plate has the pull rod, and the one end of pull rod mutually supports with the grip block, the mounting groove has been seted up at the top of workstation, the equidistance rotates through the pivot in the mounting groove and is connected with the feeding roller.
Preferably, collect the mechanism and include the carriage and collect the box, the four corners of carriage respectively with one side fixed connection of four support columns, sliding connection has the collection box on the carriage.
Preferably, one side of the pull rod is provided with a chute, one end of the clamping block, which is far away from the moving plate, is provided with an inclined surface, and the inclined surface of the clamping block is matched with the chute of the pull rod.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses when equipment begins to operate and punches to the article, can realize feeding and the centre gripping to the material through feed mechanism, can be swift carry out the centre gripping, adjustment mechanism and the convenience of punching the mechanism of mutually supporting be convenient for increase equipment man-hour afterwards, can realize carrying out quick punching to the article, the location that can be accurate swift to the position of punching of difference, thereby realize processing it, and simultaneously, for the feature of environmental protection when increasing equipment operation, be equipped with the collection mechanism to processing debris, collect it, this movable perforating device's that air energy water heater panel beating mould used simple structure, the simple operation, realization that can be swift punches to the article, feed mechanism, the mutually supporting of adjustment mechanism and punching mechanism, can accomplish the work of punching on the article surface of semi-automatization, the practicality of this equipment is higher.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is one of the schematic structural diagrams of the adjusting mechanism of the present invention;
fig. 3 is a second schematic structural diagram of the adjusting mechanism of the present invention;
FIG. 4 is a schematic structural view of the hole punching mechanism of the present invention;
fig. 5 is one of the schematic structural diagrams of the feeding mechanism of the present invention;
fig. 6 is a second schematic structural view of the feeding mechanism of the present invention;
fig. 7 is a schematic structural view of the torsion mechanism of the present invention.
In the figure: 1. a work table; 2. a support pillar; 3. an adjustment mechanism; 31. a screw rod; 32. vertically moving a motor; 33. a rotating groove; 34. a slider; 35. a support frame; 36. a traversing motor; 37. a threaded rod; 38. a travel bar; 39. a transmission belt; 310. a transmission block; 4. a punching mechanism; 41. a movable seat; 42. a cylinder; 43. a limiting rod; 44. mounting a plate; 45. a motor base; 46. a punching motor; 47. punching a hole head; 5. a feeding mechanism; 51. mounting grooves; 52. a feed roll; 53. a fixed mount; 54. pressing down the air cylinder; 55. a pull rod; 56. a clamping block; 57. moving the plate; 58. a mating groove; 6. a collection mechanism; 61. a carriage; 62. a collection box; 7. a chute.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the movable punching device for the air energy water heater metal plate die in the figure comprises a workbench 1 and supporting columns 2, the supporting columns 2 are fixedly mounted at four corners of the bottom of the workbench 1, the workbench 1 is convenient to fixedly mount other working parts on the equipment, the supporting columns 2 are convenient to support the equipment, and the stability of the equipment during operation is improved.
Referring to fig. 1, an adjusting mechanism 3 convenient for moving the working position is fixedly installed at the top of a workbench 1, a punching mechanism 4 convenient for cutting is fixedly installed at the output end of the adjusting mechanism 3, a feeding mechanism 5 convenient for feeding is fixedly installed at the center of the top of the workbench 1, a collecting mechanism 6 convenient for collecting cutting scraps is arranged at the bottom of the workbench 1, four corners of the collecting mechanism 6 are respectively and fixedly installed at the side edges of a supporting column 2, when an object needs to be punched, the object is firstly transported to a clamping position through the feeding mechanism 5 and then clamped, then the working position of the punching mechanism 4 is adjusted through the adjusting mechanism 3, after the adjustment is completed, the punching mechanism 4 starts to punch the device, in addition, a through groove is formed at the bottom of the workbench 1, so that the scraps can conveniently fall into the collecting mechanism 6 through the through groove, the collection of processing garbage is realized, and the environmental protection performance of equipment is improved.
Referring to fig. 2 and 3, the adjusting mechanism 3 includes a screw rod 31, a vertical movement motor 32, two rotation slots 33, a slider 34, a support frame 35, a horizontal movement motor 36, a threaded rod 37, a moving rod 38, a transmission belt 39 and a transmission block 310, two rotation slots 33 are symmetrically formed in the top end of the workbench 1, the screw rod 31 is rotatably connected to the inside of each of the two rotation slots 33 through a rotating shaft, the transmission block 310 is fixedly installed at one end of the screw rod 31, the vertical movement motor 32 is fixedly installed at one end of the bottom of the workbench 1, the transmission belt 39 is sleeved on the output end of the vertical movement motor 32 and the outer side of the transmission block 310, the slider 34 is engaged and connected to the screw rod 31, the slider 34 is slidably connected to the inside of the rotation slot 33, the top portions of the two sliders 34 are fixedly connected to the bottom of the support frame 35, the top end of the support frame 35 is rotatably connected to the threaded rod 37, the utility model discloses a punching mechanism, including support frame 35, the top of support frame 35, the one end fixed connection of threaded rod 37, the top of support frame 35, the output of sideslip motor 36 and threaded rod 37, the below of threaded rod 37 is equipped with carriage release lever 38, and carriage release lever 38 fixed mounting is on the top of support frame 35, when the regulation of position is carried out to punching mechanism 4 to needs, erect and move motor 32 and sideslip motor 36 and drive lead screw 31 and threaded rod 37 rotation respectively, and then realized the erectting of punching mechanism 4 and moved and the sideslip, can adjust the position of punching, the existence of slider 34 is convenient for realize installing support frame 35, support frame 35 is convenient for the sideslip part to install simultaneously, the power transmission of the part that moves is convenient for realize erectly to mutually supporting of drive belt 39 and transmission piece 310, the existence of carriage release lever 38 is.
Referring to fig. 4, the punching mechanism 4 includes a moving base 41, an air cylinder 42, a limiting rod 43, a mounting plate 44, a motor base 45, a punching motor 46 and a punching head 47, the threaded rod 37 is engaged with the moving base 41, a through hole is formed at the bottom end of the moving base 41, the moving base 41 is slidably connected to the moving rod 38, the air cylinders 42 are symmetrically and fixedly mounted at two ends of the moving base 41, output ends of the two air cylinders 42 are respectively fixedly connected to two ends of the mounting plate 44, the limiting rod 43 is fixedly mounted at the top of the mounting plate 44, through holes are formed at four corners of the moving base 41, the limiting rod 43 is inserted into the through holes at four corners of the moving base 41, the motor base 45 is fixedly mounted at the bottom of the mounting plate 44, the punching motor 46 is fixedly mounted inside the motor base 45, and the punching head 47 is fixedly mounted at an output end of the, when the mechanism 4 that punches begins work, earlier adjust the mechanism 4 that punches to suitable operating position through adjustment mechanism 3, cylinder 42 drives mounting panel 44 downstream afterwards, and simultaneously, the existence of gag lever post 43 is convenient for increase the stability of mounting panel 44 when removing, and the motor 46 that punches drives the punch head 47 afterwards and begins to punch to the surface of article, and the existence of removal seat 41 is convenient for realize the removal of mechanism 4 that punches, and the existence of motor cabinet 45 is convenient for punch motor 46 and carries out fixed mounting.
Referring to fig. 5 and 6, the feeding mechanism 5 includes an installation groove 51, a feeding roller 52, a fixed frame 53, a down-pressing cylinder 54, a pull rod 55, a clamping block 56, a moving plate 57 and a matching groove 58, the fixed frame 53 is symmetrically and fixedly installed at the center of the bottom of the workbench 1, the down-pressing cylinder 54 is fixedly installed on the fixed frame 53, the moving plate 57 is fixedly installed at the output end of the down-pressing cylinder 54, the moving plate 57 is slidably connected to the workbench 1, the matching groove 58 matched with the moving plate 57 is formed in the middle of the workbench 1, the pull rod 55 is fixedly installed at both ends of the moving plate 57, the clamping block 56 is symmetrically and slidably connected to the inside of the workbench 1, the pull rod 55 is symmetrically and fixedly installed at the top of the moving plate 57, one end of the pull rod 55 is matched with the clamping block 56, the installation groove 51 is formed in the top of, equidistance is rotated through the pivot in the mounting groove 51 and is connected with feed roller 52, when feed mechanism 5 began working, send into the article along feed roller 52 on movable plate 57, push down cylinder 54 afterwards and drive movable plate 57 and begin to move downwards, at this moment, movable plate 57 drives pull rod 55 and moves downwards, the mutually supporting of pull rod 55 and grip block 56 is convenient for realize carrying out the centre gripping to the article, mounting groove 51, the mutually supporting of mount 53 and cooperation groove 58 is convenient for increase feed mechanism 5 and carries out fixed mounting, increase the convenience of ann feed mechanism 5 when the installation.
Referring to fig. 7, the collecting mechanism 6 includes a sliding frame 61 and a collecting box 62, four corners of the sliding frame 61 are respectively fixedly connected to one side of the four supporting columns 2, the collecting box 62 is slidably connected to the sliding frame 61, the sliding frame 61 is convenient for sliding the collecting box 62, and the collecting box 62 is convenient for collecting the debris.
Referring to fig. 5, one side of the pull rod 55 is provided with an inclined groove 7, one end of the clamping block 56, which is away from the moving plate 57, is provided with an inclined surface, the inclined surface of the clamping block 56 is matched with the inclined groove 7 of the pull rod 55, and when the pull rod 55 moves linearly downwards, the inclined surface of the clamping block 56 can be extruded through the inclined groove 7, so that the clamping block 56 clamps an object.
Principle of operation
The workbench 1 is convenient for fixedly mounting other working components on the equipment, the support column 2 is convenient for supporting the equipment, the stability of the equipment in operation is improved, when the object needs to be punched, the object is firstly transported to a clamping position through the feeding mechanism 5, when the feeding mechanism 5 starts to work, the object is fed onto the movable plate 57 along the feeding roller 52, then the movable plate 57 is driven by the down-pressing cylinder 54 to move downwards, at the moment, the movable plate 57 drives the pull rod 55 to move downwards, the object is clamped by the mutual matching of the pull rod 55 and the clamping block 56, the fixed mounting of the feeding mechanism 5 is facilitated by the mutual matching of the mounting groove 51, the fixed mount 53 and the matching groove 58, the convenience in mounting the feeding mechanism 5 is improved, the clamping is further realized, and then the working position of the punching mechanism 4 is adjusted through the adjusting mechanism 3, when the position of the punching mechanism 4 needs to be adjusted, the vertical moving motor 32 and the horizontal moving motor 36 respectively drive the screw rod 31 and the threaded rod 37 to rotate, so that vertical movement and horizontal movement of the punching mechanism 4 are realized, the punching position can be adjusted, the supporting frame 35 is convenient to install due to the existence of the sliding block 34, meanwhile, the supporting frame 35 is convenient to install due to the horizontal moving part, the power transmission of the vertical moving part is convenient to realize due to the mutual matching of the transmission belt 39 and the transmission block 310, the stability of the punching mechanism 4 during the horizontal moving is convenient to increase due to the existence of the moving rod 38, after the adjustment is completed, the punching mechanism 4 starts to punch holes on equipment, the punching mechanism 4 is adjusted to a proper working position through the adjusting mechanism 3, then the cylinder 42 drives the mounting plate 44 to move downwards, meanwhile, the stability of the mounting plate 44 during the moving is convenient to increase due to the existence of the limiting rod 43, and then the punching motor 46 drives the punching, remove the removal of the existence of seat 41 and be convenient for realize mechanism 4 that punches, the existence of motor cabinet 45 is convenient for punch motor 46 and carries out fixed mounting, in addition, logical groove has been seted up to the bottom of workstation 1, the piece of being convenient for falls into on collection mechanism 6 through leading to the groove, when pull rod 55 linear motion downwards can be realized with the inclined plane cooperation of grip block 56 to chute 7, can extrude grip block 56's inclined plane through chute 7, make grip block 56 carry out the centre gripping to the article, the realization is to the collection of processing rubbish, increase the feature of environmental protection of equipment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (6)

1. The utility model provides an activity perforating device that air energy water heater panel beating mould was used, includes workstation (1) and support column (2), the equal fixed mounting in bottom four corners of workstation (1) has support column (2), its characterized in that: the top fixed mounting of workstation (1) is convenient for remove operating position's adjustment mechanism (3), the output fixed mounting of adjustment mechanism (3) has the convenient mechanism (4) of punching of cutting, the top central authorities fixed mounting of workstation (1) has feed mechanism (5) of the feeding of being convenient for, the bottom of workstation (1) is equipped with collection mechanism (6) of being convenient for carry out the collection to the cutting piece, and the four corners of collecting mechanism (6) is fixed mounting respectively at the side of support column (2).
2. The movable punching device for the air energy water heater sheet metal die according to claim 1, characterized in that: the adjusting mechanism (3) comprises a screw rod (31), a vertical moving motor (32), a rotating groove (33), a sliding block (34), a support frame (35), a transverse moving motor (36), a threaded rod (37), a moving rod (38), a transmission belt (39) and a transmission block (310), wherein the two rotating grooves (33) are symmetrically formed in the top end of the workbench (1), the two rotating grooves (33) are rotatably connected with the screw rod (31) through a rotating shaft, one end of the screw rod (31) penetrates through the side wall of the workbench (1) and is fixedly provided with the transmission block (310), the vertical moving motor (32) is fixedly arranged at one end of the bottom of the workbench (1), the transmission belt (39) is sleeved on the outer side of the output end of the vertical moving motor (32) and the outer side of the transmission block (310), the sliding block (34) is engaged with the screw rod (31) and is connected with the sliding block (34) in the rotating groove (33), the top of two slider (34) respectively with the bottom fixed connection of support frame (35), support frame (35) top is rotated through the pivot and is connected with threaded rod (37), top one side fixed mounting of support frame (35) has sideslip motor (36), the output of sideslip motor (36) and the one end fixed connection of threaded rod (37), the below of threaded rod (37) is equipped with carriage release lever (38), and carriage release lever (38) fixed mounting is on the top of support frame (35).
3. The movable punching device for the air energy water heater sheet metal die as claimed in claim 2, wherein: the punching mechanism (4) comprises a moving seat (41), a cylinder (42), a limiting rod (43), a mounting plate (44), a motor seat (45), a punching motor (46) and a punching head (47), wherein the moving seat (41) is connected to the threaded rod (37) in a meshed manner, a through hole is formed in the bottom end of the moving seat (41), the moving seat (41) is connected to the moving rod (38) in a sliding manner, the cylinders (42) are symmetrically and fixedly mounted at the two ends of the moving seat (41), the output ends of the two cylinders (42) are respectively fixedly connected with the two ends of the mounting plate (44), the limiting rod (43) is fixedly mounted at the top of the mounting plate (44), the through holes are formed in the four corners of the moving seat (41), the limiting rod (43) is inserted into the through holes in the four corners of the moving seat (41), and the motor seat (45) is fixedly mounted at the bottom of, the punching machine is characterized in that a punching motor (46) is fixedly mounted inside the motor base (45), and a punching head (47) is fixedly mounted at the output end of the punching motor (46).
4. The movable punching device for the air energy water heater sheet metal die according to claim 1, characterized in that: the feeding mechanism (5) comprises a mounting groove (51), a feeding roller (52), a fixing frame (53), a pressing cylinder (54), a pull rod (55), a clamping block (56), a movable plate (57) and a matching groove (58), the fixing frame (53) is symmetrically and fixedly mounted at the center of the bottom of the workbench (1), the pressing cylinder (54) is fixedly mounted on the fixing frame (53), the movable plate (57) is fixedly mounted at the output end of the pressing cylinder (54), the movable plate (57) is slidably connected on the workbench (1), the matching groove (58) which is matched with the movable plate (57) is formed in the middle of the workbench (1), the pull rod (55) is fixedly mounted at the two ends of the movable plate (57), the clamping block (56) is slidably connected to the inner symmetry of the workbench (1), and the pull rod (55) is fixedly mounted at the top of the movable plate (57), and the one end and the grip block (56) of pull rod (55) mutually support, mounting groove (51) have been seted up at the top of workstation (1), the equidistance is connected with feed roll (52) through the pivot rotation in mounting groove (51).
5. The movable punching device for the air energy water heater sheet metal die according to claim 1, characterized in that: collect mechanism (6) and include carriage (61) and collect box (62), the four corners of carriage (61) respectively with one side fixed connection of four support columns (2), sliding connection has on carriage (61) collects box (62).
6. The movable punching device for the air energy water heater sheet metal die as claimed in claim 4, wherein the movable punching device comprises: one side of the pull rod (55) is provided with a chute (7), one end of the clamping block (56) far away from the moving plate (57) is provided with an inclined plane, and the inclined plane of the clamping block (56) is matched with the chute (7) of the pull rod (55).
CN202022012233.7U 2020-09-15 2020-09-15 Movable punching device for air energy water heater metal plate die Active CN213052813U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022012233.7U CN213052813U (en) 2020-09-15 2020-09-15 Movable punching device for air energy water heater metal plate die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022012233.7U CN213052813U (en) 2020-09-15 2020-09-15 Movable punching device for air energy water heater metal plate die

Publications (1)

Publication Number Publication Date
CN213052813U true CN213052813U (en) 2021-04-27

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ID=75560045

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022012233.7U Active CN213052813U (en) 2020-09-15 2020-09-15 Movable punching device for air energy water heater metal plate die

Country Status (1)

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CN (1) CN213052813U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114247914A (en) * 2021-10-22 2022-03-29 江西华东船业有限公司 Sheet punching device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114247914A (en) * 2021-10-22 2022-03-29 江西华东船业有限公司 Sheet punching device
CN114247914B (en) * 2021-10-22 2022-11-25 江西华东船业有限公司 Sheet punching device

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