CN104511722A - Automatic manufacturing process of box housing of freezer and freezer - Google Patents
Automatic manufacturing process of box housing of freezer and freezer Download PDFInfo
- Publication number
- CN104511722A CN104511722A CN201310456827.9A CN201310456827A CN104511722A CN 104511722 A CN104511722 A CN 104511722A CN 201310456827 A CN201310456827 A CN 201310456827A CN 104511722 A CN104511722 A CN 104511722A
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- CN
- China
- Prior art keywords
- case shell
- cool tube
- tube group
- inner cool
- automatic manufacturing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides an automatic manufacturing process of a box housing of a freezer and the freezer, and aims at solving the technical problem that the forming precision of a plurality of boards of the box housing of the existing freezer is poor and a fit clearance of internal cooling pipe sets is large, which causes low refining and heat exchange efficiency. According to the technical scheme, the automatic manufacturing process of the box housing of the freezer comprises the steps of covering the internal cooling pipe sets on a planar board; automatically integrally bending a die to integrally bend and form the box housing and the internal cooling pipe set; then connecting two end sides to be connected, of the bent and formed box housing board by the undercutting process. The automatic manufacturing process of the box housing of the freezer has the advantages that the processing process is simple, the refining degree is high, the heat exchange efficiency is increased, and meanwhile, the product production efficiency can be greatly increased; with the adoption of the box housing prepared by automatic preparation process and the freezer which is integrally formed and covered with internal cooling pipes, the efficiency can be effectively increased, and the energy consumption level of the whole device can be further increased.
Description
Technical field
The invention belongs to technical field of refrigeration equipment, specifically, relate to a kind of automatic manufacturing technique and ice box of ice box case shell.
Background technology
Traditional electrical refrigerator shell is generally individually shaping by multi-sheets, then makes ice box shell by spot welding or socket connection; Due to case shell be shaping respectively by multiple parts after assemble, thus the inner cool tube group after bending and molding needs after case casing forming, carry out note and covers, inner cool tube group and case shell paste employing artisan craftsmanship, and due to the restriction of operating space, not only complicated operation, and easily cause occurring gap between inner cool tube group and case shell inwall, and the more difficult control in gap, the degree that becomes more meticulous is low and heat exchanger effectiveness is low.
At present, part ice box case shell, by adopting the higher equipment of automaticity to carry out machine-shaping to the multi-sheets of case shell, and adopts automatic welding or rolling syndeton, improving production efficiency; Inner cool tube group simultaneously after bending and molding adopts equipment to assist and pastes, and promotes the heat exchanger effectiveness of inner cool tube group and case shell inwall.But, although adopt automation equipment to be processed into molding box shell, the interior cold auxiliary equipment that pastes pastes inner cool tube group and promotes to some extent productive temp and heat exchanger effectiveness, case shell multi-sheets formed precision is poor, and interior cold to paste fit clearance large, become more meticulous and heat exchange effect poor, simultaneously cost increase is larger.
Summary of the invention
The invention provides a kind of automatic manufacturing technique and ice box of ice box case shell, solve that existing ice box case shell multi-sheets formed precision is poor, inner cool tube group fit clearance causes greatly the technical problem that becomes more meticulous and heat exchanger effectiveness is low, is to traditional electrical refrigerator casing forming and the interior cold subversiveness innovation pasted.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of automatic manufacturing technique of ice box case shell, it is shaping that the flat sheet that described case shell covers inner cool tube group by note carries out Integral bending, and the connection of undercut technique is carried out on to be connected for bending and molding rear cabinet coverboard material two end limits, manufacturing procedure is simple, and the degree that becomes more meticulous is high.
The automatic manufacturing technique of ice box case shell described above, specifically adopts following steps:
(1) first flat sheet is laid on automatic delivery line, carries out various stamping-out, flanging and upset;
(2) be large parallel snake type inner cool tube group by inner cool tube group Bending Mould by inner cool tube automatic moulding; Large parallel snake type refers to large-scale continuous S type;
(3) by precise positioning translational clamp, the translation of large parallel snake type inner cool tube group is pre-fixed on the sheet material of case shell entirety tiling, by pre-correcting frock first to the correcting of inner cool tube group, adopt the automatic note of intelligence to cover frock more automatically to paste, by high-efficiency heat conduction medium, inner cool tube group is contacted with case shell inwall is bonding;
(4) by automation Integral bending mould, sheet material is carried out bending and molding with large parallel snake type inner cool tube group monoblock type;
(5) being finally connected carrying out undercut technique with the limit, case coverboard material two ends after inner cool tube group Integral bending, inner cool tube end being connected with refrigeration system on request simultaneously.
Undercut technique is by limit, case shell two ends snapping (being similar to ten fingers to interlock), to ensure limit, two ends connection reliability.
The automatic manufacturing technique of ice box case shell described above, undercut technique in described step (5) refers to that two, case shell end limit to be connected all arranges Access Division, wherein the Access Division on limit, one end is the draw-in groove that end limit is formed to case shell internal bend, the Access Division on other end limit is the draw-in groove that end limit is bent to form to case shell outside, and the draw-in groove on two end limits is connected together.
The automatic manufacturing technique of ice box case shell described above, undercut technique in described step (5) refers to that two, case shell end limit to be connected all arranges Access Division, Access Division wherein on limit, one end is the clamping sheet that end limit is bent to form, Access Division on other end limit is the draw-in groove that end limit is bent to form, and clamping sheet is plugged in draw-in groove.
Further, in order to improve heat transfer efficiency, pass through special processing process, by original circular inner cool tube group, being processed into cross sectional shape is that especially big oval circular arc or band planar structure " D " type carry out bending again, inner cool tube group and flat sheet are that face contacts, and improve inner cool tube and case shell contact internal walls area further, and then raising heat exchanging efficiency.Special processing process refers to a kind of precise extrusion or rolling process, does not destroy original inner cool tube surface anticorrosion processing layer as far as possible.
The automatic manufacturing technique of ice box case shell described above, the high-efficiency heat conduction medium in described step (3) adopts melting glue.High-efficiency heat conduction medium is a kind of medium carrying out exchange heat, normally used for melting glue, and except playing heat exchange action, also playing is adhesively fixed inner cool tube and case shell surface acts on, as Henkel heat-conducting glue.
The automatic manufacturing technique of ice box case shell described above, the upset in described step (1) refers to that case shell carries out 180 ° of parallel upsets.Face up after the tiling of case shell, first carry out corner cut, stamping-out, position, die mould various hole, to make machined burrs inside, ensure that outer surface smoother is attractive in appearance, then carry out 180 ° of parallel upsets, then carry out inner cool tube group and case shell inner surface pastes.
The automatic manufacturing technique of ice box case shell described above, described flat sheet is made by the cutting of coiled strip automatically levelling, or directly adopts scale material stock board.
A kind of ice box, comprise case shell and inner bag, described case shell adopts above-mentioned automatic manufacturing technique manufacture to form.
Ice box case shell is improved to one block of monoblock type sheet material by original multi-blocked structure, first the note carrying out inner cool tube group in flat sheet covers, by automation Integral bending mould, case shell and inner cool tube group monoblock type are carried out bending and molding again, finally the connection of undercut technique is carried out on to be connected for the case coverboard material after bending and molding two end limits.Like this, due to inner cool tube group note cover time, operating space does not limit, by precise positioning translational clamp, inner cool tube group is fixed in flat sheet, and adopt intelligence automatically note cover the automatic note of frock and cover, adopt high-efficiency heat conduction medium by inner cool tube group and case shell inwall good bonding, raising heat exchanging efficiency, substantially increase the production efficiency of product simultaneously, and improve the quality of product.
The ice box adopting the case shell of this automation preparation technology and inner cool tube global formation to paste, effectively promotes beat, and the degree that becomes more meticulous is high, promotes complete machine energy consumption grade further.
The automatic manufacturing technique of ice box case shell of the present invention carries out subversiveness innovation to traditional electrical refrigerator casing forming and interior cold pasting.
Accompanying drawing explanation
Fig. 1 is that the flat sheet for manufacturing ice box case shell carries out the structural representation after stamping-out;
Fig. 2 is the structural representation after flat sheet carries out flanging;
Fig. 3 is that the inner cool tube group being shaped to large parallel snake type in advance pre-fixes the structural representation in flat sheet;
Fig. 4 be the large parallel snake type inner cool tube group pre-fixed in flat sheet is carried out correcting, note cover after structural representation;
It is shaping that Fig. 5 is that flat sheet that note covers inner cool tube group carries out Integral bending;
Fig. 6 be ice box case shell Integral bending shaping after structure partly cut open schematic diagram;
Fig. 7 is a kind of overall structure schematic diagram of ice box;
Fig. 8 is the top view of ice box shown in Fig. 7;
Fig. 9 is the A-A sectional view of Fig. 8;
Figure 10 is the version I of undercut technique;
Figure 11 is the version II of undercut technique;
Figure 12 is with the inner cool tube group of planar structure " D " type and case shell note to cover structure sectional view;
Figure 13 is the embody rule structural representation of precise positioning translational clamp in location inner cool tube group;
Figure 14 is the B-B sectional view of Figure 13;
Figure 15 is pre-correcting frock, intelligence automatically note cover frock covers inner cool tube group embody rule structural representation at correcting, note;
Figure 16 is the C-C sectional view of Figure 15;
Figure 17 is the D-D sectional view of Figure 16;
Figure 18 is the E-E sectional view of Figure 16;
Figure 19 adopts automation Integral bending mould the case shell monoblock type containing inner cool tube group to be carried out structural representation that is 1 curved, 2 bending roll forming;
Figure 20 is the F-F sectional view of Figure 19;
Figure 21 adopts automation Integral bending mould the case shell monoblock type containing inner cool tube group to be carried out structural representation that is 3 curved, 4 bending roll forming;
Figure 22 is the G-G sectional view of Figure 21.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
The present invention proposes a kind of brand-new automatic manufacturing technique of ice box case shell, changes the tank shell that traditional plurality of plates assembles, and it is shaping that the flat sheet that case shell covers inner cool tube group by note carries out Integral bending, and manufacturing procedure is simple, and the degree that becomes more meticulous is high.Specifically, following steps are adopted:
Shown in figure 1-6,
(1) first flat sheet 1 is laid on automatic delivery line, carries out various stamping-out, flanging and upset; Flat sheet 1 is made by the cutting of coiled strip automatically levelling, or directly adopts scale material stock board;
(2) be large parallel snake type inner cool tube group 2 by inner cool tube group Bending Mould by inner cool tube automatic moulding;
(3) by precise positioning translational clamp, the translation of large parallel snake type inner cool tube group 2 is pre-fixed on the sheet material 1 of case shell entirety tiling, by pre-correcting frock first to inner cool tube group 2 correcting, adopt the automatic note of intelligence to cover frock more automatically to paste, by high-efficiency heat conduction medium, inner cool tube group is contacted with case shell inwall is bonding;
(4) by automation Integral bending mould, sheet material being carried out bending and molding with large parallel snake type inner cool tube group monoblock type is ice box case shell;
(5) being finally connected carrying out undercut technique with the limit, case coverboard material 1 two ends after inner cool tube group 2 Integral bending, inner cool tube end being connected with refrigeration system on request simultaneously.
Concrete undercut technique be flat sheet 1 and inner cool tube group 2 Integral bending shaping after, two end limits to be connected all arrange Access Division, can adopt the concealed version of the following two kinds:
Concealed version I: as shown in Figure 10, wherein the Access Division on limit, one end is the draw-in groove 21 that end limit is formed to case shell internal bend, the Access Division on other end limit is the draw-in groove 22 that end limit is bent to form to case shell outside, wherein, the cross section of draw-in groove 21,22 is U-shaped, the two firm being connected together.Certainly, the generation type of draw-in groove 21,22 is not restricted to the described embodiments, as long as both can clamping be firmly in protection scope of the present invention.
Concealed version II: as shown in figure 11, Access Division wherein on limit, one end is the clamping sheet 23 that end limit is bent to form, Access Division on other end limit is the draw-in groove 24 that end limit is bent to form, and clamping sheet 23 is plugged in draw-in groove 24, the two firm being connected together.As preferably, clamping sheet 23 is bent into and holds limit vertical and extend to the inside of case shell, and draw-in groove 24 is also corresponding to be bent into and to hold limit vertical and extend to the inside of case shell, and the clamping process of such clamping sheet 23 and draw-in groove 24 is very convenient.General, the cross section of draw-in groove 24 is U-shaped, thus makes draw-in groove 24 only block clamping sheet 23.Certainly, the generation type of clamping sheet 23, draw-in groove 24 is not restricted to the described embodiments, as long as both can clamping be firmly in protection scope of the present invention.
The automated manufacturing equipment that above-mentioned automatic manufacturing technique adopts comprises blanking die successively, flanging mould, inner cool tube group Bending Mould, precise positioning translational clamp 4, pre-correcting frock 5, and intelligence automatically note covers frock 6, automation Integral bending mould 7.Wherein blanking die, flanging mould, inner cool tube group Bending Mould is existing equipment die, repeats no more.
As illustrated in figs. 13-14, precise positioning translational clamp 4 comprises fixed mount 41, fixed mount 41 is fixed with the clamping part 42 of number identical with the row of inner cool tube group 2, the bottom of clamping part 42 is with the groove 43 matched with inner cool tube group 2 cross section, namely inner cool tube group is placed in groove 43 just, ensure inner cool tube group reliable clamping, position is accurate.
As shown in figures 15-18, pre-correcting frock 5 comprises fixed mount 51, rotating shaft 52 and the pre-correcting wheels 53 be arranged in rotating shaft 52, and the bottom, two ends of fixed mount 51 is provided with rotary shaft rack 54, and rotating shaft 52 is connected with fixed mount 51 by rotary shaft rack 54; As shown in Figure 6, the wheel rim of pre-correcting wheels 53 is provided with the groove 53-1 matched with inner cool tube group 2 cross section, by pre-correcting wheels 52 first to the correcting of inner cool tube group, groove 53-1 grooved on pre-correcting wheels 52 wheel rim, ensure that inner cool tube group shape reaches regulation requirement, be convenient to subsequent tapes and automatically paste.
As shown in figure 16, intelligence automatically note is covered frock 6 and is comprised automatic note and cover wheels 61 and adhesive tape disc 62, and automatic note covers wheels 61 and is arranged in rotating shaft 63, this rotating shaft 63 two ends connection rotating shaft support 64, and rotary shaft rack 64 is fixed on overall fixed mount 65;
Adhesive tape disc 62 is arranged in rotating shaft 66, this rotating shaft 66 two ends connection rotating shaft support 67, and rotary shaft rack 67 is fixed on overall fixed mount 68; Adhesive tape disc 62 is wound around adhesive tape 69, automatically the wheel rim pasting wheels 61 has the groove 61-1 matched with inner cool tube group cross section, the adhesive tape 69 from adhesive tape disc 62 is wound around is preset in groove 61-1, automatic note covers wheels 61 and drives note to cover adhesive tape 69 in the process of rotating, and inner cool tube group is fixed on case shell inwall.
As shown in figure 17, the adhesive tape 69 after automatic note covers, ensures that inner cool tube group and case shell inwall closely cooperate.Adopt intelligence automatically to paste frock, paste wheels wheel rim and there is the grooved matched with inner cool tube group cross section, inner cool tube group is contacted with case shell inwall good bonding, eliminate gap, raising heat exchanging efficiency.
As shown in figures 19-22, adopt automation Integral bending mould 7 be the case shell monoblock type containing inner cool tube group is carried out 1 curved, 2 is curved, 3 is curved, 4 curved bending and molding structural representations, automation Integral bending mould comprises cover half bar 701, dynamic model bar 702, cover half bar fixed mount 703, dynamic model bar fixed mount 704, fixed support platform 705, turnover bracket platform 706, power-driven system I 707, power-driven system II 708, rotating shaft I 709, rotating shaft II 710, cover half bar 701 is arranged on cover half bar fixed mount 703, dynamic model bar 702 is arranged on dynamic model bar fixed mount 704, one end and the fixed support platform 705 of power-driven system I 707 are hinged, the other end and dynamic model bar fixed mount 704 hinged, one end and the fixed support platform 705 of power-driven system II 708 are hinged, the other end and turnover bracket platform 706 hinged,
Specifically, first the case shell monoblock type containing inner cool tube group is carried out 1 curved, 2 bendings roll forming (as shown in figure 20), carry out 3 curved, 4 bendings roll forming (as shown in figure 22) again, with the groove matched with inner cool tube group cross section on cover half bar 701, auxiliary servo is finely tuned, and ensures that the inner cool tube after bending and case shell strangle trace bad phenomenon without pushing up drum.
During bending, first compressed downwards by the cover half bar 701 be fixed on cover half bar fixed mount 703 and to be positioned on fixed support platform 705 and note has covered the case shell of inner cool tube group, then power-driven system I 707 drives dynamic model bar fixed mount 704 to drive dynamic model bar 702 axle centered by rotating shaft I 709 to rotate, it is shaping to the case shell Integral bending containing inner cool tube group that dynamic model bar 702 and cover half bar 701 fit through rolling extrusion, the transition of guard box shell bending part surface smoothing, bending simultaneously, power-driven system II 708 drives turnover bracket platform 706 axle centered by rotating shaft II 710 to rotate, auxiliary positioning supporting role is played to the case shell containing inner cool tube group after shaping.
The one side that cover half bar 701 touches with case shell joint is arc-shaped surface, and this arc-shaped surface is provided with the groove matched with inner cool tube group.The radius of arc-shaped surface, for being generally 12mm, 18mm or 25mm, is decided by the specification size of actual electrical refrigerator-freezer.
As shown in figure 12, in order to improve heat transfer efficiency, by original circular inner cool tube group, be processed into cross sectional shape and carry out bending again for being with planar structure " D " type, such inner cool tube group 2 with flat sheet 1 for face contacts, improve inner cool tube and case shell contact internal walls area, and then raising heat exchanging efficiency, adopt high-efficiency heat conduction medium melting glue 3 to paste between inner cool tube and sheet material.
Certainly, inner cool tube can also be processed into cross sectional shape is especially big oval circular arc type.
As Figure 7-9, a kind of ice box, comprises case shell and inner bag, and case shell adopts above-mentioned automatic manufacturing technique manufacture to form.
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (9)
1. an automatic manufacturing technique for ice box case shell, is characterized in that: it is shaping that the flat sheet that described case shell covers inner cool tube group by note carries out Integral bending, and the connection of undercut technique is carried out on to be connected for bending and molding rear cabinet coverboard material two end limits.
2. the automatic manufacturing technique of ice box case shell according to claim 1, is characterized in that specifically adopting following steps:
(1) first flat sheet is laid on automatic delivery line, carries out various stamping-out, flanging and upset;
(2) be large parallel snake type inner cool tube group by inner cool tube group Bending Mould by inner cool tube automatic moulding;
(3) by precise positioning translational clamp, the translation of large parallel snake type inner cool tube group is pre-fixed on the sheet material of case shell entirety tiling, by pre-correcting frock first to the correcting of inner cool tube group, adopt the automatic note of intelligence to cover frock more automatically to paste, by high-efficiency heat conduction medium, inner cool tube group is contacted with case shell inwall is bonding;
(4) by automation Integral bending mould, sheet material is carried out bending and molding with large parallel snake type inner cool tube group monoblock type;
(5) being finally connected carrying out undercut technique with the limit, case coverboard material two ends after inner cool tube group Integral bending, inner cool tube end being connected with refrigeration system on request simultaneously.
3. the automatic manufacturing technique of ice box case shell according to claim 2, it is characterized in that: the undercut technique in described step (5) refers to that two, case shell end limit to be connected all arranges Access Division, wherein the Access Division on limit, one end is the draw-in groove that end limit is formed to case shell internal bend, the Access Division on other end limit is the draw-in groove that end limit is bent to form to case shell outside, and the draw-in groove on two end limits is connected together.
4. the automatic manufacturing technique of ice box case shell according to claim 2, it is characterized in that: the undercut technique in described step (5) refers to that two, case shell end limit to be connected all arranges Access Division, Access Division wherein on limit, one end is the clamping sheet that end limit is bent to form, Access Division on other end limit is the draw-in groove that end limit is bent to form, and clamping sheet is plugged in draw-in groove.
5. the automatic manufacturing technique of ice box case shell according to claim 2, is characterized in that: it is that " D " type of oval circular arc type or band planar structure carries out bending again that described inner cool tube group is processed into cross sectional shape.
6. the automatic manufacturing technique of ice box case shell according to claim 2, is characterized in that: the high-efficiency heat conduction medium in described step (3) adopts melting glue.
7. the automatic manufacturing technique of ice box case shell according to claim 2, is characterized in that: the upset in described step (1) refers to that case shell carries out 180 ° of parallel upsets.
8. the automatic manufacturing technique of ice box case shell according to claim 2, is characterized in that: described flat sheet is made by the cutting of coiled strip automatically levelling, or directly adopts scale material stock board.
9. an ice box, comprises case shell and inner bag, it is characterized in that described case shell adopts automatic manufacturing technique manufacture described in above-mentioned arbitrary claim to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310456827.9A CN104511722A (en) | 2013-09-30 | 2013-09-30 | Automatic manufacturing process of box housing of freezer and freezer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310456827.9A CN104511722A (en) | 2013-09-30 | 2013-09-30 | Automatic manufacturing process of box housing of freezer and freezer |
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| CN104511722A true CN104511722A (en) | 2015-04-15 |
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| CN201310456827.9A Pending CN104511722A (en) | 2013-09-30 | 2013-09-30 | Automatic manufacturing process of box housing of freezer and freezer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106016922A (en) * | 2016-06-07 | 2016-10-12 | 青岛海尔特种电冰柜有限公司 | Liner for refrigeration equipment, refrigeration equipment and liner processing method |
| CN106583541A (en) * | 2016-11-23 | 2017-04-26 | 滁州聚保利电装有限公司 | Production technology of bottom plates for refrigerator compressors |
| CN108620467A (en) * | 2018-02-05 | 2018-10-09 | 青岛海尔特种电冰柜有限公司 | Inner cool tube Automatic-drawing equipment and processing method |
| CN117227185A (en) * | 2023-11-13 | 2023-12-15 | 山东宏泰电器有限公司 | Automatic manufacturing equipment for inner container of refrigerator |
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| CN117227185B (en) * | 2023-11-13 | 2024-01-12 | 山东宏泰电器有限公司 | Automatic manufacturing equipment for inner container of refrigerator |
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Application publication date: 20150415 |