CN114013100A - Go forward back and go out hot-pressing feeding and discharging mechanism - Google Patents

Go forward back and go out hot-pressing feeding and discharging mechanism Download PDF

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Publication number
CN114013100A
CN114013100A CN202111289883.9A CN202111289883A CN114013100A CN 114013100 A CN114013100 A CN 114013100A CN 202111289883 A CN202111289883 A CN 202111289883A CN 114013100 A CN114013100 A CN 114013100A
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CN
China
Prior art keywords
assembly
blanking
feeding
hot
middle die
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Pending
Application number
CN202111289883.9A
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Chinese (zh)
Inventor
潘国平
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Suzhou Sikaili Automation Equipment Co ltd
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Suzhou Sikaili Automation Equipment 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 Suzhou Sikaili Automation Equipment Co ltd filed Critical Suzhou Sikaili Automation Equipment Co ltd
Priority to CN202111289883.9A priority Critical patent/CN114013100A/en
Publication of CN114013100A publication Critical patent/CN114013100A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30Feeding material to presses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/32Discharging presses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/34Heating or cooling presses or parts thereof

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

The invention relates to a forward and backward hot-press feeding and discharging mechanism, which comprises a feeding assembly, a hot-press assembly, a discharging assembly and a backflow assembly which are sequentially arranged along an action execution process; wherein the tail end of the feeding assembly is provided with a preheating platform, so that the preheating problem before hot pressing is solved; a cooling fan is arranged in the blanking assembly, so that the cooling problem is solved; simultaneously for the abundant rational utilization in assurance space, the backward flow of material loading in earlier stage and later stage corresponds the conveyer belt that uses and distributes from top to bottom, this execution in-process that also leads to whole process produces the difference in height, this difference in height also facilitates for the unloading, well mould tool adopts self gravity gliding, reduce driver part's setting, this rational layout that also makes the space plays the effect of killing two birds with one stone, the high efficiency that whole equipment action was carried out from this, space layout's rationality all can improve.

Description

Go forward back and go out hot-pressing feeding and discharging mechanism
Technical Field
The invention relates to the technical field of automation equipment, in particular to a hot-pressing and blanking mechanism with forward and backward discharging functions.
Background
The automatic technology can not only liberate people from heavy physical labor, partial mental labor and severe and dangerous working environments, but also greatly improve the labor productivity and enhance the capability of continuous innovation. The invention provides a hot-pressing and blanking mechanism capable of moving forward and backward, which is used for solving the problems in the prior art, and does not find the same or similar technical scheme as the invention through retrieval.
Disclosure of Invention
The invention aims to: the utility model provides a go forward back hot pressing unloading mechanism to solve the high efficiency of automation equipment execution action among the prior art, the rationality of spatial layout all need further improve the problem.
The technical scheme of the invention is as follows: a go-ahead and go-out hot press blanking mechanism comprises:
the feeding assembly is used for conveying the filled middle die jig by adopting a conveying belt and/or a material shifting piece;
the hot pressing assembly is provided with a fixed lower die and a liftable upper die, and the filled middle die jig moves between the upper die and the lower die through the feeding assembly and is subjected to hot pressing forming;
the blanking assembly comprises a sliding blanking assembly and a cooling blanking assembly, the sliding blanking assembly is used for enabling the middle die jig to slide downwards under the action of self gravity, and the cooling blanking assembly pushes the middle die jig sliding to the tail end to flow out and cool;
and the backflow component adopts a conveyor belt and/or a material shifting piece to enable the molded and cooled middle die jig to flow out.
Preferably, the feeding assembly is a combination of a conveyor belt and a material stirring piece, wherein the conveying direction of the conveyor belt is set to be the X-axis direction, and the conveying direction of the material stirring piece is set to be the Y-axis direction; the conveying direction of the sliding blanking assembly in the horizontal plane is the Y-axis direction, and the conveying direction of the cooling blanking assembly is the X-axis direction; the backflow assembly is formed by combining a conveying belt and a conveying belt, the conveying direction of the conveying belt for the middle die jig to advance is the Y-axis direction, the conveying direction of the conveying belt for the middle die jig to go backwards is the X-axis direction, the conveying belt in the feeding assembly and the conveying belt for the middle die jig to go backwards are arranged in parallel up and down, and the height difference between the conveying belt and the conveying belt is the height difference of the sliding and discharging assembly in a descending mode.
Preferably, the material pushing plate and the hook claw are selected as the material pushing part, driven by an electric cylinder or an air cylinder and respectively arranged on two sides of a feeding track, push plates push the middle die jig to the feeding track from a conveying belt, and the hook claw pushes the middle die jig to the hot pressing assembly from the feeding track.
Preferably, the tail end of the feeding track is provided with a preheating platform, and a middle rotary seat is arranged between the preheating platform and the lower die.
Preferably, the sliding blanking assembly comprises an inclined slide rail and a bearing platform arranged at the tail end, and a height adjusting cylinder and an angle adjusting cylinder are arranged below the bearing platform; the cooling blanking assembly comprises a pair of guide flanges, a cooling fan erected above the guide flanges and a scraper for driving the middle die jig to move along the pair of guide flanges; the scraper blade adopts electric cylinder or cylinder to drive to promote well mould tool to backflow component initiating terminal one side.
Preferably, under the jacking state of the height adjusting cylinder, the inclination angle of the angle adjusting cylinder driving bearing platform is the same as that of the inclined slide rail, and under the descending state of the height adjusting cylinder, the angle adjusting cylinder driving bearing platform is arranged along the horizontal direction.
Preferably, a buffer storage platform is arranged on one side of the starting end of the backflow component, the buffer storage platform is aligned with the tail end of the cooling and blanking component, and the side edge of the buffer storage platform is connected with an air cylinder which pushes a middle die jig pushed to the buffer storage platform through a scraper to the backflow component.
Preferably, the hot pressing assembly is provided with an anti-explosion assembly at the side, and the anti-explosion assembly comprises a hairbrush and an anti-explosion cylinder for driving the hairbrush to stretch.
Preferably, the feeding assembly, the hot pressing assembly and the discharging assembly are arranged in two groups in parallel and share the same backflow assembly, and in the backflow assembly, a conveyor belt for a middle die jig to advance is arranged in the middle of the two groups of structures.
Compared with the prior art, the invention has the advantages that:
the invention relates to feeding and discharging of a middle die jig after filling in a hot pressing stage, which comprises the combined execution of multiple actions in the feeding stage, preheating before hot pressing, and feeding and cooling problems after hot pressing; simultaneously for the abundant rational utilization in assurance space, the backward flow of material loading in earlier stage and later stage corresponds the conveyer belt that uses and distributes from top to bottom, this execution in-process that also leads to whole process produces the difference in height, this difference in height also facilitates for the unloading, well mould tool adopts self gravity gliding, reduce driver part's setting, this rational layout that also makes the space plays the effect of killing two birds with one stone, the high efficiency that whole equipment action was carried out from this, space layout's rationality all can improve.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a schematic structural view of a forward and backward hot-pressing and blanking mechanism according to the present invention;
FIG. 2 is a top view of a forward and backward hot press charging and discharging mechanism according to the present invention;
FIG. 3 is a schematic structural view of the feeding assembly according to the present invention;
FIG. 4 is an exploded top view of the arrangement of the pusher plate, the hook claw and the feeding rail according to the present invention;
FIG. 5 is a side view of the autoclave assembly of the present invention;
FIG. 6 is a schematic structural view of the blanking assembly of the present invention;
fig. 7 is a schematic diagram of the distribution structure of the overall path of the movement of the middle mold jig of the forward and backward hot pressing and blanking mechanism according to the present invention.
Wherein: 01-1/01-2/01-3, a conveyor belt;
1. a feeding assembly;
11. the device comprises a blocking cylinder, 12, a feeding rail, 13, a material pushing plate, 131, a rodless cylinder, 14, a hook claw, 141, an electric cylinder, 15 and a preheating platform;
2. a hot pressing assembly;
21. the lower die comprises a lower die body 22, an upper die body 23, an anti-explosion die assembly 231, a steel brush 232, an anti-explosion die cylinder 24 and a transfer seat;
3. blanking assembly 301, sliding blanking assembly 302 and cooling blanking assembly;
31. the device comprises an inclined slide rail, 32, a bearing platform, 321, a height adjusting cylinder, 322, an angle adjusting cylinder, 33, a guide flange, 34, a scraper plate, 35, a cooling fan, 36 and a cache platform;
4. and a reflow component.
Detailed Description
The present invention will be further described in detail with reference to the following specific examples:
as shown in fig. 1, a mechanism for feeding and discharging a hot press after moving forward is used for conveying a filled middle mold jig, hot press molding materials inside, and finally discharging the middle mold jig, and the mechanism comprises a feeding assembly 1, a hot press assembly 2, a discharging assembly 3, and a backflow assembly 4 which are sequentially arranged along an action execution process; in this embodiment, the feeding assembly 1, the hot pressing assembly 2 and the discharging assembly 3 are arranged in parallel in two groups, i.e., a group a and a group B shown in the figure, and share the same backflow assembly 4; due to the complex structure shown in the figure, the components mounted on the frames corresponding to the reference signs are corresponding structures, wherein part of the structure of the backflow component 4 is also mounted on the frame corresponding to the feeding component 1.
Referring to fig. 2, in order to clarify the distribution direction of each component, the whole forward-moving and backward-moving hot-pressing and blanking mechanism is set to be in a coordinate system formed by an X axis and a Y axis.
Specifically, as shown in fig. 3, the feeding assembly 1 adopts a combination of a conveyor belt and a material stirring part, the conveyor belt 01-1 moves along the X-axis direction, and the material stirring part moves along the Y-axis direction; a sensor is arranged on the side edge of the conveyor belt 01-1, a blocking cylinder 11 is arranged on the side edge or above the conveyor belt, and when the sensor detects that the middle mold jig arrives, the blocking cylinder 11 blocks the middle mold jig, so that the middle mold jig can be sequentially fed; referring to fig. 4, the material pushing plate 13 and the hook claw 14 are selected as the material pushing member, the material pushing plate 13 and the hook claw 14 are driven by an electric cylinder or an air cylinder and are respectively arranged on two sides of a feeding track 12, the material pushing plate 13 pushes the middle mold fixture from the conveyor belt 01-1 onto the feeding track 12, that is, the moving distance is s 1; the middle mold fixture is pushed into the hot pressing assembly 2 by the hook claw 14 through the feeding track 12, i.e. the movement path is s 2; the tail end of the feeding rail 12 is provided with a preheating platform 15 for preheating the middle mold jig which moves to the position.
In this embodiment, the material pushing plate 13 is driven by the rodless cylinder 131, the hook claw 14 is driven by the electric cylinder 141, and since the electric cylinder 141 itself cannot extend into the hot pressing assembly 2, as shown in fig. 4, the hook claw 14 must be an outwardly extending structure, and the starting point is M at this time, the middle mold jig on the conveyor belt 01-1 cannot be pushed by the hook claw 14 alone, and thus the material pushing plate 13 needs to be used for cooperation; if only the hook claw 14 is adopted, the stroke of the electric cylinder 141 must be increased, so that the reasonable layout cannot be realized in space, and the efficiency is low; if only the material pushing plate 13 is adopted, the rodless cylinder 131 cannot extend into the hot pressing assembly 2, and the middle die jig cannot be conveyed into the hot pressing assembly 2 by only the material pushing plate 13; therefore, the combination of the pusher plate 13 and the hook claw 14 is not indispensable.
As shown in fig. 5, the hot-pressing assembly 2 has a fixed lower die 21 and a liftable upper die 22, a middle rotating base 24 is arranged between the lower die 21 and the preheating platform 15, the filled middle die jig can move to a position between the upper die 22 and the lower die 21 through the feeding assembly 1, and hot-pressing molding is realized through downward movement of the upper die 22; an anti-explosion module assembly 23 is arranged on the side edge of the hot-pressing assembly 2, and the anti-explosion module assembly 23 comprises a hairbrush 231 and an anti-explosion module cylinder 232 for driving the hairbrush 231 to stretch; the anti-explosion module is used for cleaning the lower end of the upper die 22, and preventing the middle die jig from being damaged due to too much pollutants in the next hot pressing process.
As shown in fig. 6, the blanking assembly 3 includes a sliding blanking assembly 301 and a cooling blanking assembly 302, the conveying direction of the sliding blanking assembly 301 in the horizontal plane is the Y-axis direction, and includes an inclined slide rail 31 and a bearing platform 32 arranged at the end, and a plurality of balls are embedded on the end surface of the inclined slide rail 31, so as to facilitate the downward sliding of the middle mold jig; the bearing platform 32 is hinged and is butted with the tail end of the inclined slide rail 31, the tail end protrudes upwards for limiting, and a height adjusting cylinder 321 and an angle adjusting cylinder 322 are arranged below the bearing platform; under the jacking state of the height adjusting cylinder 321, the angle adjusting cylinder 322 drives the bearing platform 32 to have the same inclination angle as that of the inclined slide rail 31, and under the descending state of the height adjusting cylinder 321, the angle adjusting cylinder 322 drives the bearing platform 32 to be arranged along the horizontal direction; when the middle mold jig does not slide down, the height adjusting cylinder 321 is in a jacking state, the bearing platform 32 is in an inclined state, and the middle mold jig slides down along with the inclined slide rail 31 and falls on the bearing platform 32; then the height adjusting cylinder 321 drives the bearing platform 32 to descend, and the angle adjusting cylinder 322 drives the bearing platform 32 to be horizontal and level to be flush with the table top of the subsequent cooling blanking assembly 302.
As shown in fig. 6 and 7, the conveying direction of the cooling blanking assembly 302 is the X-axis direction, and includes a pair of guiding ribs 33, a heat dissipating fan 35 mounted above the guiding ribs 33, and a scraper 34 driving the middle mold fixture to move along the pair of guiding ribs 33; the scraper 34 is driven by an electric cylinder or an air cylinder, and pushes the middle die jig to one side of the starting end of the backflow component 4, and the temperature is reduced in the movement process; and a buffer platform 36 is arranged on one side of the starting end of the corresponding backflow component 4, the buffer platform 36 is also aligned with the tail end of the cooling and blanking component 302, and the side edge of the buffer platform is connected with an air cylinder, so that a middle mold jig pushed to the buffer platform 36 by the scraper 34 is pushed to the backflow component 4 along the Y-axis direction.
As shown in fig. 1 and 7, the backflow component 4 selects a combination of a conveyor belt and a conveyor belt, the conveying direction of the conveyor belt 01-2 for the middle mold jig to advance is the Y-axis direction, the conveying direction of the conveyor belt 01-3 for the middle mold jig to go backward is the X-axis direction, the conveyor belt 01-1 in the feeding component 1 and the conveyor belt 01-3 for the middle mold jig to go backward are arranged in parallel up and down, and the height difference between the two is the height difference of the sliding blanking component 301, which includes the sum of the height of the sliding along the inclined slide rail 31 and the height of the height adjusting cylinder 321; meanwhile, the middle mold jig is conveyed at the joint of the two conveyor belts (01-2 and 01-3) and pushed by an air cylinder.
Of course, the backflow component 4 can also adopt a combination of a conveyor belt and a material stirring piece, or can adopt the material stirring piece to finish the final blanking.
The working principle of the invention is as follows:
(1) as shown in fig. 3, the filled middle mold jig is placed on the upper layer conveyor belt 01-1, when the middle mold jig reaches the position aligned with the feeding track 12, the sensor detects that the middle mold jig is in place, and the middle mold jig is blocked by the blocking cylinder 11 to be prevented from continuously advancing along the conveyor belt 01-1; then, referring to fig. 4, the material pushing plate 13 pushes the middle mold fixture to advance s1, the hook claw 14 pushes the middle mold fixture to reach the preheating platform 15, the middle mold fixture is preheated first, and after preheating is completed, the middle mold fixture is continuously pushed into the hot pressing assembly 2, so that the middle mold fixture is placed on the lower mold 21;
(2) the hot-pressing assembly 2 works, and the filler in the middle die jig is hot-pressed and molded by downward movement of the lower die 21;
(3) as shown in fig. 6 and 7, after the next middle mold fixture continues to move into the hot pressing assembly 2, the previous middle mold fixture that has been hot-pressed is pushed onto the inclined slide rail 31, and after sliding down to the bearing platform 32 along the inclined slide rail 31, the bearing platform 32 descends and rotates to a horizontal state; then, the scraper 34 pushes the middle mold fixture to enter between the pair of guide ribs 33, and in the process of moving along the guide ribs 33, the temperature is reduced through the cooling fan 35, and finally the middle mold fixture enters the cache platform 36;
(4) the cylinder pushes the middle mold fixture arranged on the buffer platform 36 to the conveyor belt 01-2 of the backflow component 4, the middle mold fixture moves along the Y-axis direction at the moment, when the middle mold fixture moves to the tail end, the cylinder at the corresponding position continuously pushes the middle mold fixture to the conveyor belt 01-3 moving along the X-axis direction, and finally the middle mold fixture flows out.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that the present embodiments be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (9)

1. The utility model provides a go out hot pressing unloading mechanism after advance which characterized in that includes:
the feeding assembly is used for conveying the filled middle die jig by adopting a conveying belt and/or a material shifting piece;
the hot pressing assembly is provided with a fixed lower die and a liftable upper die, and the filled middle die jig moves between the upper die and the lower die through the feeding assembly and is subjected to hot pressing forming;
the blanking assembly comprises a sliding blanking assembly and a cooling blanking assembly, the sliding blanking assembly is used for enabling the middle die jig to slide downwards under the action of self gravity, and the cooling blanking assembly pushes the middle die jig sliding to the tail end to flow out and cool;
and the backflow component adopts a conveyor belt and/or a material shifting piece to enable the molded and cooled middle die jig to flow out.
2. The forward and backward hot press blanking mechanism according to claim 1, wherein: the feeding assembly is formed by combining a conveyor belt and a material stirring piece, wherein the conveying direction of the conveyor belt is set to be the X-axis direction, and the conveying direction of the material stirring piece is set to be the Y-axis direction; the conveying direction of the sliding blanking assembly in the horizontal plane is the Y-axis direction, and the conveying direction of the cooling blanking assembly is the X-axis direction; the backflow assembly is formed by combining a conveying belt and a conveying belt, the conveying direction of the conveying belt for the middle die jig to advance is the Y-axis direction, the conveying direction of the conveying belt for the middle die jig to go backwards is the X-axis direction, the conveying belt in the feeding assembly and the conveying belt for the middle die jig to go backwards are arranged in parallel up and down, and the height difference between the conveying belt and the conveying belt is the height difference of the sliding and discharging assembly in a descending mode.
3. The forward and backward hot-pressing and blanking mechanism according to claim 2, wherein: the material pushing plate and the hook claw are driven by an electric cylinder or an air cylinder and are respectively arranged on two sides of a feeding track, the middle die jig is pushed onto the feeding track by the material pushing plate on a conveying belt, and the middle die jig is pushed into the hot pressing assembly by the hook claw on the feeding track.
4. The forward and backward hot press blanking mechanism according to claim 3, wherein: the feeding track end is provided with preheats the platform, preheat and be provided with well swivel mount between platform and the lower mould.
5. The forward and backward hot-pressing and blanking mechanism according to claim 2, wherein: the sliding blanking assembly comprises an inclined slide rail and a bearing platform arranged at the tail end, and a height adjusting cylinder and an angle adjusting cylinder are arranged below the bearing platform; the cooling blanking assembly comprises a pair of guide flanges, a cooling fan erected above the guide flanges and a scraper for driving the middle die jig to move along the pair of guide flanges; the scraper blade adopts electric cylinder or cylinder to drive to promote well mould tool to backflow component initiating terminal one side.
6. The forward and backward hot press blanking mechanism according to claim 5, wherein: under the jacking state of the height adjusting cylinder, the inclination angle of the angle adjusting cylinder driving bearing platform is the same as that of the inclined slide rail, and under the descending state of the height adjusting cylinder, the angle adjusting cylinder driving bearing platform is arranged along the horizontal direction.
7. The forward and backward hot press blanking mechanism according to claim 5, wherein: backflow component initiating terminal one side is provided with the buffer memory platform, the buffer memory platform also aligns with cooling unloading subassembly end, and the side is connected with the cylinder, will promote to the well mould tool of buffer memory platform through the scraper blade and promote to backflow component on.
8. The forward and backward hot-pressing and blanking mechanism according to claim 2, wherein: the hot pressing assembly is characterized in that an anti-explosion module is installed on the side edge of the hot pressing assembly and comprises a hairbrush and an anti-explosion cylinder for driving the hairbrush to stretch.
9. The forward and backward hot-pressing and blanking mechanism according to claim 2, wherein: the feeding assembly, the hot pressing assembly and the discharging assembly are arranged in two groups in parallel and share the same backflow assembly, and in the backflow assembly, a conveyor belt for a middle die jig to go ahead is arranged in the middle of the two groups of structures.
CN202111289883.9A 2021-11-02 2021-11-02 Go forward back and go out hot-pressing feeding and discharging mechanism Pending CN114013100A (en)

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CN202111289883.9A CN114013100A (en) 2021-11-02 2021-11-02 Go forward back and go out hot-pressing feeding and discharging mechanism

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Application Number Priority Date Filing Date Title
CN202111289883.9A CN114013100A (en) 2021-11-02 2021-11-02 Go forward back and go out hot-pressing feeding and discharging mechanism

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CN202111289883.9A Pending CN114013100A (en) 2021-11-02 2021-11-02 Go forward back and go out hot-pressing feeding and discharging mechanism

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116141811A (en) * 2022-12-30 2023-05-23 扬州市耐特电工绝缘有限公司 High-temperature-resistant mica plate pressing process

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589819A (en) * 1983-05-31 1986-05-20 Kabushiki Kaisha Komatsu Seisakusho Workpiece loading/unloading device for a press or the like
CN109465920A (en) * 2018-11-23 2019-03-15 上海秋林机械有限公司 Horizontal hot pressing unit
CN111739721A (en) * 2020-07-30 2020-10-02 江苏华磁电子科技有限公司 Ultra-thin inductance hot-pressing shaping process wiring equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589819A (en) * 1983-05-31 1986-05-20 Kabushiki Kaisha Komatsu Seisakusho Workpiece loading/unloading device for a press or the like
CN109465920A (en) * 2018-11-23 2019-03-15 上海秋林机械有限公司 Horizontal hot pressing unit
CN111739721A (en) * 2020-07-30 2020-10-02 江苏华磁电子科技有限公司 Ultra-thin inductance hot-pressing shaping process wiring equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116141811A (en) * 2022-12-30 2023-05-23 扬州市耐特电工绝缘有限公司 High-temperature-resistant mica plate pressing process
CN116141811B (en) * 2022-12-30 2024-06-14 扬州市耐特电工绝缘有限公司 High-temperature-resistant mica plate pressing process

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