Tableware paper-plastic forming mold

Abstract

The utility model relates to a tableware paper-plastic forming mould which comprises a hot-pressing upper mould and a hot-pressing lower mould, the hot-pressing lower mould comprises a lower mould plate and is provided with a lower forming cavity, a heating plate is arranged on the lower side of the lower mould plate, a bottom plate is arranged on the lower side of the heating plate, an air chamber plate is arranged on the lower side of the bottom plate, and an air chamber is arranged on the upper side of the air chamber plate. The air chamber plate is provided with a vacuum exhaust pipe and an air blowing pipe which are communicated to the air chamber, the heating plate and the bottom plate are provided with communicating holes which are used for communicating the air chamber with the forming cavity, the hot-pressing lower die is provided with the air chamber plate and the air chamber, and the lower forming cavity of the lower die plate can be communicated with the vacuum exhaust pipe and the air blowing pipe through the air chamber. In this way, vacuum pumping is carried out in the hot pressing process, the product can be better attached to the inner wall of the favorite forming cavity, the hot pressing forming effect of the product can be improved, after hot pressing is completed, air is blown towards the lower forming cavity through the air blowing pipe, the hot-pressed product can be better blown out, and therefore the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the mould field especially relates to a tableware paper plastic forming die. BACKGROUND

[0002] In the forming process of paper plastic product, the wet embryo made from the slurry pool needs to be heated and dried, in the drying process, in order to keep the shape of the product from changing, the corresponding mold is needed, that is, the mold is heated and formed, at this time, the product forming is mainly controlled by the shape of the mold, in the production process, since the mold is basically formed into a closed cavity to form, which may cause the air in the mold to be unable to be discharged in the forming process, affecting the forming quality of the product, and being difficult to take out after forming. SUMMARY

[0003] Therefore, it is necessary to provide a tableware paper plastic forming die aiming at the problems in the prior art.

[0004] A tableware paper plastic forming die, characterized by comprising a hot pressing upper die and a hot pressing lower die, the hot pressing lower die comprises a lower die plate provided with a lower forming cavity, the lower side of the lower die plate is provided with a heating plate, the lower side of the heating plate is provided with a bottom plate, the lower side of the bottom plate is provided with an air chamber plate, the upper side of the air chamber plate is provided with an air chamber, the air chamber plate is provided with a vacuum air exhaust pipe and a gas blowing pipe communicated with the air chamber, and the heating plate and the bottom plate are provided with a communication hole for communicating the air chamber with the forming cavity.

[0005] In one embodiment, the air chamber plate is provided with a lower recess in the middle, the lower recess is provided with a fixed part around the outer side, the fixed part and the lower recess are connected through an inclined surface, the lower recess is provided with a first through hole and a second through hole communicated with the vacuum air exhaust pipe and the gas blowing pipe.

[0006] In one embodiment, the air chamber plate is provided with a flow resistance plate at the position of the lower recess, the flow resistance plate is fixed on the upper side of the first through hole and the second through hole through a fixed column, a gap is arranged between the flow resistance plate and the lower recess, and the top of the flow resistance plate is lower than the upper side of the fixed part.

[0007] In one embodiment, the lower recess of the air chamber plate is provided with a plurality of inner support columns, and the top of the inner support column is at the same height as the fixed part.

[0008] In one embodiment, the hot pressing lower die further comprises a lower support plate, the air chamber plate is fixed on the upper side of the lower support plate, a plurality of outer support columns are arranged between the air chamber plate and the lower support plate, the outer support columns are arranged at intervals to form a flow gap, and the air chamber plate and the lower support plate are connected and fixed.

[0009] In one of the embodiments, the heat plate and the bottom plate are provided with an upper heat insulation plate, the upper heat insulation plate is provided with a communication hole for communicating the air chamber and the forming cavity.

[0010] In one of the embodiments, the lower side of the air chamber plate is provided with a lower heat insulation plate, the lower side of the lower heat insulation plate is provided with a lower bottom plate, and the lower bottom plate is connected with the lower support plate through an outer support column.

[0011] In one of the embodiments, the lower support plate comprises a support top plate and a support bottom plate, the support top plate and the support bottom plate are provided with transverse support plates and longitudinal support plates, the upper side of the transverse support plate is provided with a plurality of upper positioning grooves, the lower side of the longitudinal support plate is provided with lower positioning grooves, and the transverse support plate and the longitudinal support plate are cross-joint fixed at the positions of the upper positioning grooves and the lower positioning grooves.

[0012] The utensil paper plastic forming die has the lower die provided with the air chamber plate and the air chamber, the lower forming cavity of the lower die plate is communicated with the vacuum air pipe and the air blowing pipe through the air chamber, vacuum air is drawn in the hot pressing process, the product is better attached to the inner wall of the favorite forming cavity, the hot pressing forming effect of the product is improved, air is blown to the lower forming cavity through the air blowing pipe after the hot pressing is completed, the product after hot pressing is better blown out, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a utensil paper plastic forming die structure schematic view of the utility model;

[0014] Fig. 2 It is a utensil paper plastic forming die hot pressing lower die structure schematic view of the utility model;

[0015] Fig. 3 It is a utensil paper plastic forming die hot pressing lower die explosion view of the utility model;

[0016] Fig. 4 It is a utensil paper plastic forming die hot pressing lower die explosion view of the utility model;

[0017] 1, hot pressing upper die; 2, hot pressing lower die; 21, lower die plate; 22, heat plate; 23, bottom plate; 24, air chamber plate; 241, lower concave part; 242, fixed part; 243, inclined surface; 244, first through hole; 245, second through hole; 246, flow resistance plate; 247, inner support column; 25, vacuum air pipe; 26, air blowing pipe; 27, lower support plate; 271, support top plate; 272, support bottom plate; 273, transverse support plate; 274, longitudinal support plate; 28, outer support column; 291, upper heat insulation plate; 292, lower heat insulation plate. DETAILED DESCRIPTION

[0018] For the above purposes, features and advantages of the present application to be more apparent and understandable, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0019] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are described for purposes of explanation only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the terms "and / or" includes any and all combinations of one or more of the associated listed items.

[0021] As shown in Figs. 1 to 4 The present application provides a tableware paper plastic forming die, which comprises a hot-pressing upper die and a hot-pressing lower die, wherein the hot-pressing lower die comprises a lower die plate provided with a lower forming cavity, the lower side of the lower die plate is provided with a heating plate, the lower side of the heating plate is provided with a bottom plate, the lower side of the bottom plate is provided with an air chamber plate, the upper side of the air chamber plate is provided with an air chamber, the air chamber plate is provided with a vacuum air pipe and a blowing pipe which are connected to the air chamber, and the heating plate and the bottom plate are provided with communication holes for connecting the air chamber and the forming cavity.

[0022] The hot-pressing lower die is provided with the air chamber plate and the air chamber, the lower forming cavity of the lower die plate can be connected to the vacuum air pipe and the blowing pipe through the air chamber, the vacuum air pipe is used for vacuumizing air during the hot-pressing process, the product is better attached to the inner wall of the lower forming cavity, the hot-pressing forming effect of the product is improved, and the blowing pipe is used for blowing air to the lower forming cavity after the hot-pressing is completed, so that the product after hot-pressing can be better blown out, thereby improving the production efficiency.

[0023] At this time, the heating plate is provided with a plurality of transverse through holes, and heating wires are arranged in the through holes, so that the heating plate has a certain heating function.

[0024] The air chamber plate 24 is provided with a lower recess 241 in the middle, and a fixing portion 242 is arranged around the outside of the lower recess 241. The fixing portion 242 is connected to the lower recess 241 by an inclined surface 243, and is used to form an air chamber. The lower recess 241 is provided with a first through hole 244 and a second through hole 245, which are connected to the vacuum air pipe 25 and the air blowing pipe 26. At this time, the lower recess 241 is arranged in the middle of the upper side of the air chamber plate 24, and the fixing portion 242 is annular around the periphery. After the air chamber plate 24 is fixed to the bottom plate 23 at the upper side, the lower recess 241 and the inclined surface form a closed cavity (i.e. an air chamber). The air chamber is connected to the vacuum air pipe 25 and the air blowing pipe 26 at the positions of the first through hole 244 and the second through hole 245. In this way, the vacuum air pipe 25 and the air blowing pipe 26 can increase the contact area with the bottom plate 23 in the air chamber. The original cross-sectional area is small, and is expanded to the entire area of the air chamber. Then, the air chamber is connected to the lower molding cavity through the communication hole. In the process of vacuum and air blowing, the air flow in the lower molding cavity is more uniform, and the flow velocity of the gas at each position in the lower molding cavity is uniform. This ensures the stability of the hot-pressing vacuum and the stability of the product during air blowing and product removal.

[0025] Of course, at this time, the lower mold is provided with corresponding air holes for communication with the communication hole.

[0026] The first through hole 244 and the second through hole 245 are arranged at the bottom of the air chamber plate 24. Because of the different distances from the different communication holes, the gas flow near the positions of the first through hole 244 and the second through hole 245 is faster, which causes instability in the vacuum and air blowing of the lower mold. In order to avoid this situation, the lower recess 241 of the air chamber plate 24 is provided with a flow resistance plate 246. The flow resistance plate is fixed to the upper side of the first through hole 244 and the second through hole 245 by a fixing column. A gap is arranged between the flow resistance plate and the lower recess 241. The top of the flow resistance plate is lower than the upper side of the fixing portion 242. Under the action of the fixing column, the flow resistance plate 246 is suspended in the air chamber. The gas flowing into the first through hole 244 in the vacuum process and the gas flowing out of the second through hole 245 in the air blowing process will change the flow direction at the position of the flow resistance plate 246, so that the flow of the gas is more uniform. At this time, the first through hole 244 and the second through hole 245 are each provided with two, which are symmetrically arranged at the position of the lower recess 241.

[0027] Because the air chamber plate 24 is arranged in the hot pressing lower mold 2 position, it needs to be pressed during use, and the air chamber plate 24 is provided with an air chamber, which may cause damage to the air chamber plate 24 during pressing. Therefore, in order to avoid damage to the air chamber plate 24, the lower recess 241 of the air chamber plate 24 is provided with a plurality of inner support columns 247, the top of which is the same height as the fixed part 242. After arranging a plurality of inner support columns 247, the air chamber plate 24 at the lower recess 241 position supports the upper bottom plate 23 through the inner support columns 247, which can make the pressure evenly transmitted between the bottom plate 23 and the air chamber plate 24 during pressing, thereby ensuring the service life of the air chamber plate 24. At this time, the inner support column 247 is integrally formed with the air chamber plate 24, that is, it is produced by machining, which can better ensure the strength of the inner support column 247.

[0028] The bottom of the air chamber plate 24 needs to be supported and fixed, so in this embodiment, the hot pressing lower mold 2 further includes a lower support plate 27, the air chamber plate 24 is fixed on the upper side of the lower support plate 27, and a plurality of arranged outer support columns 28 are arranged between the air chamber plate 24 and the lower support plate 27 for connecting and fixing the air chamber plate 24 and the lower support plate 27, the outer support columns 28 are arranged at intervals to form a flow gap. The lower support plate 27 and the air chamber plate 24 are not directly fixed together at this time, and are connected by the outer support columns 28 between them, so that the lower support plate 27 and the air chamber plate 24 are not directly fixed, and the adjacent outer support columns 28 are provided with a flow gap, thereby forming effective heat dissipation.

[0029] At the same time, the heating plate 22 and the bottom plate 23 are provided with an upper heat insulation plate 291, and the upper heat insulation plate 291 is provided with a communication hole for communicating the air chamber with the molding cavity. Further, the lower side of the air chamber plate 24 is provided with a lower heat insulation plate 292, and the lower side of the lower heat insulation plate 292 is provided with a lower bottom plate 23, and the lower bottom plate 23 is connected with the lower support plate 27 through the outer support column 28. The upper heat insulation plate 291 and the lower heat insulation plate 292 can improve the heat insulation effect.

[0030] For the lower support plate 27, mainly for fixed, at this time, the lower support plate 27 comprises support top plate 271 and support bottom plate 27223, the support top plate and support bottom plate 27223 between being equipped with transverse support plate 273 and longitudinal support plate 274, the upper side of the transverse support plate 273 is equipped with a plurality of upper positioning slot, the lower side of the longitudinal support plate 274 is equipped with lower positioning slot, the transverse support plate 273 and longitudinal support plate 274 are crosswise interlocking fixed in upper positioning slot and lower positioning slot position, under the action of the transverse support plate 273 and longitudinal support plate 274, form a certain height of support body, at this time, the adjacent transverse support plate 273, the adjacent longitudinal support plate 274 between are equipped with a certain interval, so that a plurality of separate space can be formed, and the support top plate 271 and support bottom plate 27223 are arranged at the upper side and the lower side position, the stability of the whole can be improved, at the same time, a plurality of separate space is formed, and the heat dissipation effect of a certain can be improved.

[0031] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0032] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A paper tableware forming mold characterized by comprising: The hot pressing lower die comprises a lower die plate provided with a lower forming cavity, a heating plate provided on the lower side of the lower die plate, a bottom plate provided on the lower side of the heating plate, an air chamber plate provided on the lower side of the bottom plate, an air chamber provided on the upper side of the air chamber plate, a vacuum air pipe and a blowing pipe of the air chamber plate communicated with the air chamber, and communicating holes of the heating plate and the bottom plate for communicating the air chamber with the forming cavity.

2. The paper tableware plastic forming mold according to claim 1, wherein The middle part of the air chamber plate is provided with a lower recess, the outer side of the lower recess is provided with a fixed part, the fixed part and the lower recess are connected through an inclined surface to form an air chamber, and the lower recess is provided with a first through hole and a second through hole communicated with the vacuum air pipe and the blowing pipe.

3. The paper-plastic forming mold for tableware according to claim 2, wherein The position of the lower recess of the air chamber plate is provided with a flow resistance plate, the flow resistance plate is fixed on the upper side of the first through hole and the second through hole through a fixed column, a gap is arranged between the flow resistance plate and the lower recess, and the top of the flow resistance plate is lower than the upper side of the fixed part.

4. The paper-plastic forming mold for tableware according to claim 3, wherein The lower recess of the air chamber plate is provided with a plurality of inner support columns, and the top of the inner support column is the same height as the fixed part.

5. The paper tableware plastic forming mold according to any one of claims 1 to 4, characterized in that, The hot pressing lower die further comprises a lower support plate, the air chamber plate is fixed on the upper side of the lower support plate, a plurality of outer support columns are arranged between the air chamber plate and the lower support plate for connecting and fixing the air chamber plate and the lower support plate, the outer support columns are arranged at intervals to form a flow gap.

6. The paper-plastic forming mold for tableware according to claim 5, wherein The heating plate and the bottom plate are provided with an upper heat insulation plate, the upper heat insulation plate is provided with a communicating hole for communicating the air chamber with the forming cavity.

7. The paper-plastic forming mold for tableware according to claim 5, wherein The lower side of the air chamber plate is provided with a lower heat insulation plate, the lower side of the lower heat insulation plate is provided with a lower bottom plate, and the lower bottom plate is connected with the lower support plate through the outer support column.

8. The paper-plastic forming mold for tableware according to claim 5, wherein The lower support plate comprises a support top plate and a support bottom plate, a horizontal support plate and a vertical support plate are arranged between the support top plate and the support bottom plate, a plurality of upper positioning grooves are arranged on the upper side of the horizontal support plate, lower positioning grooves are arranged on the lower side of the vertical support plate, and the horizontal support plate and the vertical support plate are crosswise clamped and fixed at the positions of the upper positioning grooves and the lower positioning grooves.

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