CN111152443A - Servo drive multi-station refrigerator door liner vacuum forming machine - Google Patents
Servo drive multi-station refrigerator door liner vacuum forming machine Download PDFInfo
- Publication number
- CN111152443A CN111152443A CN202010021350.1A CN202010021350A CN111152443A CN 111152443 A CN111152443 A CN 111152443A CN 202010021350 A CN202010021350 A CN 202010021350A CN 111152443 A CN111152443 A CN 111152443A
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- CN
- China
- Prior art keywords
- die holder
- servo
- lower die
- upper transverse
- forming machine
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/10—Forming by pressure difference, e.g. vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/36—Moulds specially adapted for vacuum forming, Manufacture thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/38—Opening, closing or clamping means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/40—Venting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
- B29C51/428—Heating or cooling of moulds or mould parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention discloses a servo drive multi-station refrigerator door liner vacuum forming machine, which belongs to the technical field of refrigerator door liner forming machines and comprises a lower die holder, wherein a die cavity is arranged on the upper surface of the lower die holder, vent holes are formed in the body of the lower die holder, the bottom of the lower die holder is connected with vacuum suction pipes, the vacuum suction pipes are correspondingly connected with the vent holes, the bottom ends of the vacuum suction pipes are connected with inlets of vacuum suction pumps, stand columns are longitudinally arranged on the left side and the right side of the upper surface of the lower die holder, upper transverse plates are sleeved on the stand columns, mounting grooves are formed in the lower surfaces of the upper transverse plates, and the upper transverse plates can be controlled in a servo mode to ascend and descend under the matching action of driven gears, servo drive motors and drive gears, so that the upper transverse plates are close; through adjusting screw and the cooperation of adjusting the screw, behind the regulation position, have the effect of locking to after the regulation, the condition that drops can not appear.
Description
Technical Field
The invention relates to the technical field of refrigerator door liner forming machines, in particular to a servo-driven multi-station refrigerator door liner vacuum forming machine.
Background
The refrigerator is a refrigerating device for keeping constant low temperature, and is a civil product for keeping food or other articles in a constant low-temperature cold state. The cabinet or the box is provided with a compressor, an ice maker for freezing and a storage box with a refrigerating device.
The volume of the household refrigerator is usually 20-500 liters. The first compression-type refrigerator for domestic use was introduced in the united states in the world in 1910. In 1925 sweden rody corporation developed a domestic absorption refrigerator. In 1927, the american general electric company developed a totally enclosed refrigerator. In 1930, air-cooled continuous diffusion absorption refrigerators adopting different heating modes were put on the market. A novel refrigerant Freon 12 is developed successfully in 1931. Domestic thermoelectric refrigerators began to be produced in the latter half of the 50 s, and refrigerators were produced in china from the 50 s.
The refrigerator door liner is used for sealing the inside of a refrigerator, generally adopts vacuum forming, is commonly called as plastic sucking, is a plastic processing technology, mainly adopts the principle that a flat plastic hard sheet is heated to be softened, is absorbed on the surface of a mold in vacuum, is cooled and then is formed, and is widely applied to the industries of plastic packaging, lamp decoration, advertisement, decoration and the like.
When the existing vacuum forming machine is used, the operation is inconvenient, and the control on a forming machine mold is mostly manual opening and closing operation, so that the operation is not convenient enough, and the efficiency is lower.
Disclosure of Invention
The invention aims to provide a servo-driven multi-station refrigerator door liner vacuum forming machine, which aims to solve the problems that the existing vacuum forming machine in the background art is inconvenient to operate when in use, and the control on a forming machine mold is mostly manual opening and closing operation, so that the operation is inconvenient and the efficiency is low.
In order to achieve the purpose, the invention provides the following technical scheme: a servo drive multi-station refrigerator door liner vacuum forming machine comprises a lower die holder, wherein a die cavity is arranged on the upper surface of the lower die holder, vent holes are formed in the body of the lower die holder, the bottom of the lower die holder is connected with a vacuum suction pipe which is correspondingly connected with the vent holes, the bottom end of the vacuum suction pipe is connected with an inlet of a vacuum suction pump, stand columns are longitudinally arranged on the left side and the right side of the upper surface of the lower die holder respectively, an upper transverse plate is sleeved on each stand column, a mounting groove is formed in the lower surface of the upper transverse plate, a thermoplastic material plate and an electric heating assembly are transversely arranged in the mounting groove, the thermoplastic material plate is positioned on the lower side of the electric heating assembly, ejector rods are transversely arranged at the upper ends of the two sides between the stand columns, adjusting screw holes are, the bottom end of the adjusting screw is connected with a bearing assembly, the bearing assembly is installed on the upper surface of the upper transverse plate, a driven gear is sleeved on the outer wall of the adjusting screw, a servo driving motor is arranged on the upper surface of the upper transverse plate, the upper end of an output shaft of the servo driving motor is connected with a driving gear, and the driving gear is kneaded with the driven gear.
Preferably, the lower die holder is made of copper or aluminum.
Preferably, a cooling runner is arranged inside the lower die holder body, the left side wall and the right side wall of the lower die holder are respectively connected with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the cooling runner.
Preferably, the electric heating component is a resistance wire electric heating component.
Preferably, the upper transverse plate is an aluminum alloy upper transverse plate.
Preferably, a linear bearing is sleeved at the joint of the upper transverse plate and the upright post, and the linear bearing is sleeved on the outer wall of the upright post.
Preferably, the lateral width of the mounting groove is the same as the lateral width of the mold cavity.
Preferably, the ratio of the diameters of the driving gear and the driven gear is 3: 1.
Compared with the prior art, the invention has the beneficial effects that:
1) the ascending and descending functions of the upper transverse plate can be controlled in a servo mode through the matching effect of the driven gear, the servo driving motor and the driving gear, and therefore the approaching and separating functions of the upper transverse plate and the lower die base are achieved;
2) through adjusting screw and the cooperation of adjusting the screw, behind the regulation position, have the effect of locking to after the regulation, the condition that drops can not appear.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the lower die holder of the present invention;
fig. 3 is an enlarged schematic view of part a of the present invention.
In the figure: 1 lower die holder, 2 die cavities, 3 vent holes, 4 vacuum suction pipes, 5 vacuum suction pumps, 6 liquid inlets, 7 liquid outlets, 8 upright posts, 9 upper transverse plates, 10 electric heating assemblies, 11 thermoplastic material plates, 12 ejector rods, 13 adjusting screws, 14 bearing assemblies, 15 driven gears, 16 servo drive motors and 17 drive gears.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1-3, the present invention provides a technical solution: a servo drive multi-station refrigerator door liner vacuum forming machine comprises a lower die holder 1, wherein a die cavity 2 is arranged on the upper surface of the lower die holder 1, an air vent 3 is formed in the body of the lower die holder 1, the bottom of the lower die holder 1 is connected with a vacuum suction pipe 4, and the vacuum suction pipe 4 is correspondingly connected with the air vent 3;
the vacuum suction pipe 4 absorbs air inside the die cavity 2 through the vent hole 3;
the bottom end of the vacuum suction pipe 4 is connected with an inlet of a vacuum suction pump 5, the left side and the right side of the upper surface of the lower die holder 1 are both longitudinally provided with upright columns 8, and an upper transverse plate 9 is sleeved on each upright column 8;
the upright post 8 is matched with the upper transverse plate 9, so that the upper transverse plate 9 can move longitudinally on the upright post 8;
the lower surface of the upper transverse plate 9 is provided with a mounting groove, a thermoplastic material plate 11 and an electric heating assembly 10 are transversely arranged inside the mounting groove, and the thermoplastic material plate 11 is positioned on the lower side of the electric heating assembly 10;
the thermoplastic material plate 11 is used as a raw material of the refrigerator inner container, targeted selection is carried out according to specific use conditions, and the electric heating assembly 10 heats the thermoplastic material plate 11, so that the thermoplastic material plate 11 is softened;
an ejector rod 12 is transversely arranged at the upper end between the upright columns 8 at the two sides, an adjusting screw hole is formed in the middle of the ejector rod 12, an adjusting screw rod 13 is longitudinally screwed in the adjusting screw hole, the bottom end of the adjusting screw rod 13 is connected with a bearing assembly 14, and the bearing assembly 14 is installed on the upper surface of the upper transverse plate 9;
the adjusting screw 13 is connected with the upper transverse plate 9 through a bearing assembly 14, so that the adjusting screw 13 can rotate relative to the upper transverse plate 9, the adjusting screw 13 and the ejector rod 12 rotate relative to each other, and the position of the adjusting screw 13 relative to the ejector rod 12 is changed under the matching action of the adjusting screw 13 and the adjusting screw hole, so that the upper transverse plate 9 is pushed to ascend or descend relative to the ejector rod 12, and the ascending or descending adjusting effect on the thermoplastic material plate 11 and the electric heating assembly 10 is realized;
a driven gear 15 is sleeved on the outer wall of the adjusting screw 13, a servo driving motor 16 is arranged on the upper surface of the upper transverse plate 9, a driving gear 17 is connected to the upper end of an output shaft of the servo driving motor 16, and the driving gear 17 is kneaded with the driven gear 15;
the output shaft of the servo driving motor 16 can rotate forwards or backwards, the servo driving motor 16 drives the driving gear 17 to rotate, the driven gear 15 is driven to rotate through the cooperation of the rotating driving gear 17 and the driven gear 15, the driven gear 15 drives the adjusting screw 13 to rotate, and the height adjusting effect on the upper transverse plate 9 is achieved.
Further, the lower die holder 1 is copper or aluminium die holder, and the heat conduction effect is better, can be quick be heated, dispel the heat.
Further, the inside cooling runner that is provided with of body of die holder 1, the lateral wall is connected with inlet 6 and liquid outlet 7 respectively about die holder 1, and inlet 6 and liquid outlet 7 all communicate with cooling runner, through inlet 6 and liquid outlet 7 and cooling runner's mating reaction, through the water-cooling for the quick cooling shaping of raw materials.
Further, the electrical heating assembly 10 is a resistance wire electrical heating assembly.
Further, the upper transverse plate 9 is an aluminum alloy upper transverse plate.
Further, the linear bearing is sleeved at the joint of the upper transverse plate 9 and the stand column 8, the linear bearing is sleeved on the outer wall of the stand column 8, and the upper transverse plate 9 moves smoothly on the stand column 8 through the arrangement of the linear bearing, so that the frictional resistance between the upper transverse plate 9 and the stand column 8 is small.
Further, the lateral width of the mounting groove is the same as the lateral width of the mold cavity 2.
Further, the ratio of the diameter of the driving gear 17 to the driven gear 15 is 3: 1.
The working principle is as follows: clamping a thermoplastic material plate 11 at the lower side of an upper transverse plate 9, driving a driving gear 17 to rotate by a servo driving motor 16, enabling an adjusting screw 13 to rotate through the matching of the driving gear 17 and a driven gear 15, and enabling the upper transverse plate 9 to descend through the rotation of the adjusting screw 13 until the upper transverse plate 9 is contacted with a lower die holder 1;
electrifying the electric heating assembly 10, converting electric energy into heat energy by the electric heating assembly 10, and heating and softening the thermoplastic material plate 11 to enable the softened thermoplastic material plate 11 to be close to the mold cavity 2;
the vacuum suction pump 5 sucks air, the air on the upper side of the die cavity 2 is downwards sucked through the vacuum suction pipe 4 and the vent hole 3, and the lower die base 1 is close to the die cavity 2 and attached to the die cavity 2 under the action of negative pressure;
stopping heating of the electric heating assembly 10, introducing cooling water into the liquid inlet 6 and outputting the cooling water through the liquid outlet 7, so that the thermoplastic material plate 11 attached to the die cavity 2 is rapidly cooled and formed, then taking down the thermoplastic material plate 11 from the upper transverse plate 9, and reversely driving the upper transverse plate 9 to ascend through the servo driving motor 16.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to 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, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
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 servo drive multistation refrigerator door courage vacuum forming machine, includes die holder (1), its characterized in that: the upper surface of the lower die holder (1) is provided with a die cavity (2), an air vent (3) is formed in the body of the lower die holder (1), the bottom of the lower die holder (1) is connected with a vacuum suction pipe (4), the vacuum suction pipe (4) is correspondingly connected with the air vent (3), the bottom end of the vacuum suction pipe (4) is connected with an inlet of a vacuum suction pump (5), the left side and the right side of the upper surface of the lower die holder (1) are respectively and longitudinally provided with a stand column (8), an upper transverse plate (9) is sleeved on the stand column (8), a mounting groove is formed in the lower surface of the upper transverse plate (9), a thermoplastic material plate (11) and an electric heating component (10) are transversely arranged in the mounting groove, the thermoplastic material plate (11) is positioned at the lower side of the electric heating component (10), and ejector rods (12) are transversely arranged, an adjusting screw hole is formed in the middle of the ejector rod (12), an adjusting screw rod (13) is longitudinally screwed in the adjusting screw hole, a bearing assembly (14) is connected to the bottom end of the adjusting screw rod (13), the bearing assembly (14) is installed on the upper surface of the upper transverse plate (9), a driven gear (15) is sleeved on the outer wall of the adjusting screw rod (13), a servo driving motor (16) is arranged on the upper surface of the upper transverse plate (9), a driving gear (17) is connected to the upper end of an output shaft of the servo driving motor (16), and the driving gear (17) is kneaded with the driven gear (15).
2. The vacuum forming machine for the door liner of the servo-driven multi-station refrigerator according to claim 1, wherein: the lower die holder (1) is made of copper or aluminum.
3. The vacuum forming machine for the door liner of the servo-driven multi-station refrigerator according to claim 1, wherein: the cooling runner is arranged inside the body of the lower die holder (1), the left side wall and the right side wall of the lower die holder (1) are respectively connected with a liquid inlet (6) and a liquid outlet (7), and the liquid inlet (6) and the liquid outlet (7) are communicated with the cooling runner.
4. The vacuum forming machine for the door liner of the servo-driven multi-station refrigerator according to claim 1, wherein: the electric heating component (10) is a resistance wire electric heating component.
5. The vacuum forming machine for the door liner of the servo-driven multi-station refrigerator according to claim 1, wherein: the upper transverse plate (9) is an aluminum alloy upper transverse plate.
6. The vacuum forming machine for the door liner of the servo-driven multi-station refrigerator according to claim 1, wherein: the linear bearing is sleeved at the joint of the upper transverse plate (9) and the upright post (8), and the linear bearing is sleeved on the outer wall of the upright post (8).
7. The vacuum forming machine for the door liner of the servo-driven multi-station refrigerator according to claim 1, wherein: the transverse width of the mounting groove is the same as that of the die cavity (2).
8. The vacuum forming machine for the door liner of the servo-driven multi-station refrigerator according to claim 1, wherein: the diameter ratio of the driving gear (17) to the driven gear (15) is 3: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010021350.1A CN111152443A (en) | 2020-01-09 | 2020-01-09 | Servo drive multi-station refrigerator door liner vacuum forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010021350.1A CN111152443A (en) | 2020-01-09 | 2020-01-09 | Servo drive multi-station refrigerator door liner vacuum forming machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111152443A true CN111152443A (en) | 2020-05-15 |
Family
ID=70562337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010021350.1A Pending CN111152443A (en) | 2020-01-09 | 2020-01-09 | Servo drive multi-station refrigerator door liner vacuum forming machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111152443A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633958A (en) * | 2020-07-09 | 2020-09-08 | 滁州益佳模具设备制造有限公司 | Negative pressure door courage plastic uptake forming die |
| CN114516156A (en) * | 2022-02-18 | 2022-05-20 | 滁州市精美家电设备股份有限公司 | Multi-station vacuum forming integrated machine for inner container of electric appliance door |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150076745A1 (en) * | 2013-09-17 | 2015-03-19 | Toyota Boshoku Kabushiki Kaisha | Vacuum forming apparatus and vacuum forming method |
| CN106426892A (en) * | 2016-09-07 | 2017-02-22 | 滁州市鑫鼎机械模具制造有限公司 | Vacuum-forming mold for refrigerator door lining |
| CN108162318A (en) * | 2017-12-25 | 2018-06-15 | 谢涛 | A kind of automatic adjustable detachable injection mold |
| CN109291410A (en) * | 2018-09-29 | 2019-02-01 | 嘉善翔宇旅游用品有限公司 | A kind of Packing Machine of rapid cooling formula |
| CN109822866A (en) * | 2019-02-28 | 2019-05-31 | 滁州精峰机电科技有限公司 | A kind of multistation case courage vacuum forming machine |
| CN209257461U (en) * | 2018-11-21 | 2019-08-16 | 佛山市福瑞斯电器有限公司 | A kind of refrigerator door core vacuum forming mold |
-
2020
- 2020-01-09 CN CN202010021350.1A patent/CN111152443A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150076745A1 (en) * | 2013-09-17 | 2015-03-19 | Toyota Boshoku Kabushiki Kaisha | Vacuum forming apparatus and vacuum forming method |
| CN106426892A (en) * | 2016-09-07 | 2017-02-22 | 滁州市鑫鼎机械模具制造有限公司 | Vacuum-forming mold for refrigerator door lining |
| CN108162318A (en) * | 2017-12-25 | 2018-06-15 | 谢涛 | A kind of automatic adjustable detachable injection mold |
| CN109291410A (en) * | 2018-09-29 | 2019-02-01 | 嘉善翔宇旅游用品有限公司 | A kind of Packing Machine of rapid cooling formula |
| CN209257461U (en) * | 2018-11-21 | 2019-08-16 | 佛山市福瑞斯电器有限公司 | A kind of refrigerator door core vacuum forming mold |
| CN109822866A (en) * | 2019-02-28 | 2019-05-31 | 滁州精峰机电科技有限公司 | A kind of multistation case courage vacuum forming machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633958A (en) * | 2020-07-09 | 2020-09-08 | 滁州益佳模具设备制造有限公司 | Negative pressure door courage plastic uptake forming die |
| CN114516156A (en) * | 2022-02-18 | 2022-05-20 | 滁州市精美家电设备股份有限公司 | Multi-station vacuum forming integrated machine for inner container of electric appliance door |
| CN114516156B (en) * | 2022-02-18 | 2023-09-19 | 滁州市精美家电设备股份有限公司 | Multi-station electric appliance door inner container vacuum forming integrated machine |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200515 |
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| RJ01 | Rejection of invention patent application after publication |