CN221232958U

CN221232958U - Sheet molding device

Info

Publication number: CN221232958U
Application number: CN202322863993.2U
Authority: CN
Inventors: 林干虹; 钱博一
Original assignee: Zhejiang Derui New Material Technology Co ltd
Current assignee: Zhejiang Derui New Material Technology Co ltd
Filing date: 2023-10-25
Publication date: 2024-06-28
Anticipated expiration: 2033-10-25

Abstract

A sheet molding device comprises a shell and a plurality of mold units; the shell is provided with a plurality of supporting blocks which are arranged up and down, each supporting block corresponds to one mould unit, and the mould units are provided with overlapping convex blocks which can be overlapped with the upper surfaces of the corresponding supporting blocks; the distance between the supporting block and the outer side surface of the die unit is gradually reduced from top to bottom, and the protruding distance of the lap joint convex block relative to the outer side surface of the die unit is gradually reduced; the protruding distance of the lap joint convex blocks of the die units is smaller than the distance between the corresponding supporting blocks and the outer side surfaces of the die units and is larger than the distance between the non-corresponding supporting blocks above the corresponding supporting blocks and the outer side surfaces of the die units; the die unit is connected with a lifting mechanism capable of controlling the die unit to move up and down; the upper side of the mold unit forms a cavity, and the lower side of the mold unit forms a molding part which can be embedded into the cavity. The utility model combines the male die and the female die into a whole, saves the die cost, can simultaneously carry out die pressing processing on a plurality of sheets, and improves the production efficiency.

Description

Sheet molding device

Technical Field

The utility model relates to the technical field of die pressing, in particular to a sheet die pressing device.

Background

Compression molding is a common molding method for plastic or rubber products, and is generally characterized in that powder, granules, pellets and sheets are made into blanks with similar shapes to products, the blanks are placed in a cavity of a heated mold, the mold is closed and pressurized to be molded, solidified or vulcanized, and the products are obtained after demolding, wherein the mold generally comprises an upper half part and a lower half part, the lower half part is used for providing the cavity, and the upper half part is used for mold closing processing of the cavity.

The molding process is generally inefficient, for example, sheets, and requires a set of molds comprising upper and lower sections for each sheet to be processed, and the thickness and volume of the sheet are much smaller than those of the molds, resulting in a lower utilization of the effective space of the processing apparatus and a lower throughput per unit space. For example, patent document CN210679406U discloses a polytetrafluoroethylene gasket molding die, which comprises an upper die holder and a lower die holder, wherein a die shank fixing plate is installed at the bottom of the upper die holder, a male die mounting plate is installed at the bottom of the die shank fixing plate, and a male die is installed in the male die mounting plate; a female die mounting plate is arranged at the top of the lower die holder, and a female die is arranged at the top of the female die mounting plate; during processing, the male die of the upper die holder is pressed into the female die of the lower die holder, and compression molding of a layer of polytetrafluoroethylene gasket is completed. In the method, one male die and one female die are required to be matched for producing each polytetrafluoroethylene gasket, and when a plurality of polytetrafluoroethylene gaskets are required to be produced simultaneously to improve the efficiency, a plurality of sets of equipment comprising the male die and the female die are required, so that the production cost is greatly increased.

Disclosure of utility model

In order to solve the problems, the utility model provides a sheet molding device which can simultaneously process and mold a plurality of sheets, thereby greatly improving the production efficiency and reducing the production cost.

In order to achieve the above purpose, the present utility model adopts the following technical means:

A sheet molding device comprises a shell with an inner cavity and a plurality of mold units which are movably arranged in the inner cavity and are coaxially arranged up and down; the machine shell is provided with a plurality of supporting blocks which are arranged up and down, each supporting block corresponds to one die unit, and the outer side surface of the die unit is provided with an outwards extending lap joint lug which can be lapped on the upper surface of the corresponding supporting block; the distance between the supporting block and the outer side surface of the die unit is gradually reduced from top to bottom, and the protruding distance of the lap joint convex block relative to the outer side surface of the die unit is gradually reduced; the protruding distance of the lap joint convex blocks of the die units is smaller than the distance between the corresponding supporting blocks and the outer side surfaces of the die units and is larger than the distance between the non-corresponding supporting blocks above the corresponding supporting blocks and the outer side surfaces of the die units; the die unit is connected with a lifting mechanism capable of controlling the die unit to move up and down; the upper side of the die unit forms a die cavity, and the lower side of the die unit forms a die pressing part which can be embedded into the die cavity.

The sheet molding device is provided with a plurality of mold units which are arranged up and down, the upper side and the lower side of each mold unit are respectively provided with a cavity and a molding part, when the mold units are stacked up and down, the molding parts of the mold units positioned at the upper side are matched and embedded into the cavities of the mold units positioned at the next time to achieve the molding effect, and the mold units are not limited by the support blocks above the corresponding support blocks by utilizing the unique structures of the support blocks, the lap joint convex blocks and the mold units, and the shell is provided with the support blocks A1-A4 which are arranged from top to bottom by taking one embodiment as an example, the corresponding support block of one mold unit B is A3, so that the mold unit B can be overlapped on the support block A3 and can not enter the lower side of the support block A3 by the limitation of the support block A3, and meanwhile, the mold unit B is not limited by the support block A1 and the support block A2 above and can enter between the support block A2 or enter the upper side of the support block A1. When the die units are subjected to upward lifting force of the lifting mechanism, the die units located below can move upwards and are abutted against the die units located above until a plurality of die units are assembled into a whole from bottom to top, the die units adjacent from top to bottom are subjected to processing and forming of sheets through the matching structure of the die cavity and the die pressing part, in the demolding step, the die units are downwards moved by the lifting mechanism, the die units are gradually separated from the integrated structure and are overlapped with the corresponding supporting blocks due to the limitation of the supporting blocks, at the moment, gaps are formed between the die units adjacent from top to bottom again, products in the die cavities of the die units are exposed, and the products can be taken out.

Further, the housing has a top plate, and the molding part is provided at the lower side of the top plate. The molding part provided at the lower side of the top plate may be engaged with the cavity of the mold unit located at the uppermost side.

Further, the casing comprises two opposite inner walls, and the supporting blocks are arranged on the inner walls.

Further, the outer side surface of the die unit is in sliding fit with the inner wall, and the lap joint lug extends in a protruding mode along the plane of the inner wall.

Further, a guide groove extending along the horizontal direction is formed in the inner wall, and the supporting block is movably installed in the guide groove and connected with the control mechanism. The support block can be moved by the control mechanism to change the distance between itself and the outer side of the mould unit, so as to adapt to different types of moulds.

Further, a stripping module which can be protruded towards the opening direction of the die cavity is arranged at the bottom of the die cavity.

Further, the lifting mechanism is connected with the bottom of the lowest mold unit.

Further, the device also comprises a buffer mechanism arranged between the upper die units and the lower die units. The buffer mechanism can control the distance between the upper die unit and the lower die unit, and plays roles of buffering and auxiliary adjustment.

Further, a through hole is formed in the middle of the die unit.

Further, the die unit comprises a base and a raised machining part arranged in the middle of the upper surface of the base, the die cavity is formed in the middle of the machining part, and the lap joint lug is arranged on the outer side face of the base.

In summary, the following beneficial effects can be obtained by applying the utility model:

1. The utility model is provided with a plurality of die units, the upper side of each die unit forms a cavity, the lower side forms a die pressing part which can be embedded into the cavity, and the die pressing part of the upper die unit and the cavity of the lower die unit can be matched and subjected to die pressing processing when the die units are stacked up and down.

2. The die units can move upwards to form an integrated structure and process a plurality of sheets simultaneously, and after the processing is finished, the die units can move downwards to enable the integrated structure to be disassembled and the processed products to be taken out.

3. In some embodiments of the utility model, the movement of the die units is controlled by the lifting mechanism and the buffer mechanism, so that the die units can be kept stable in the process of abutting or separating.

Drawings

FIG. 1 is a schematic view showing a structure of a sheet molding apparatus according to an embodiment;

FIG. 2 is a schematic diagram of the modular unit of FIG. 1;

FIG. 3 is a schematic diagram of a matching structure between the inner wall of the housing and the mold unit in FIG. 1;

FIG. 4 is a schematic view of the structure of FIG. 3 in another state;

FIG. 5 is a schematic view showing a structure of a sheet molding apparatus according to another embodiment;

FIG. 6 is a schematic view of the inner wall of the housing according to another embodiment;

In the figure, 1-machine shell, 11-inner wall, 12-supporting block, 13-guide groove, 14-top plate, 2-die unit, 21-base, 22-processing part, 221-die cavity, 222-stripping module, 223-through port, 23-overlap bump, 24-die pressing part, 3-lifting mechanism and 4-buffer mechanism.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in fig. 1 to 3, an embodiment of a first aspect of the present utility model provides a sheet molding apparatus, which includes a casing 1 with an inner cavity and a plurality of mold units 2 movably installed in the casing and arranged up and down, wherein a lifting mechanism 3 is connected to the bottom of the lowest mold unit; the casing 1 comprises two opposite inner walls 11, a plurality of supporting blocks 12 are arranged on the inner walls in an up-and-down manner, each supporting block 12 corresponds to one mould unit 2, and referring to fig. 3, the distance between the supporting blocks and the mould units is gradually reduced from top to bottom, and a top plate 14 is further arranged at the top of the casing; referring to fig. 1 and 2, the mold unit includes a base 21 having a relatively large horizontal area and a processing part 22 having a relatively small horizontal area provided in the middle of the upper surface of the base, the middle of the processing part forming a cavity 221, in this embodiment, the cross section of the cavity is in a circular ring structure to process to obtain a disc-shaped sheet, the bottom of the cavity 221 is provided with a movably installed stripper 222 protruding toward the opening direction of the cavity, the stripper is used to eject the product from the cavity after the processing is completed, the surrounding middle of the cavity is formed with a through hole 223, the through hole 223 is used to pass a heating fluid and heat the mold unit 2, a lapping bump 23 extending convexly is provided on the outer side surface of the base for lapping and fixing with the supporting block 12 from above, a molding part 24 corresponding to the cavity 221 is provided at the bottom of the base 21, the molding part is mated with the cavity and can perform molding, similarly, the bottom of the top plate 14 of the casing is also provided with a molding part 24 to be matched with the uppermost mold unit, referring to fig. 3, the protruding distance of the lapping convex blocks of the upper to lower mold units is gradually reduced, the mold units cannot pass over the corresponding supporting blocks and move downwards, but can pass over the non-corresponding supporting blocks positioned above the corresponding supporting blocks and move upwards, the four supporting blocks from top to bottom are respectively denoted as A1 to A4, the four mold units from top to bottom are respectively denoted as B1 to B4, B3 is arranged between A3 and A2 and is lapped over A3, B3 cannot move downwards under the limitation of A3 and reaches the position between A3 and A4, but B3 is not limited by A1 and A2, so B3 can reach the position between A1 and A2 or reach the position above A1, when the lifting mechanism 3 lifts up from the lower direction of B4 through the structure, the four die units are sequentially combined from bottom to top to finally form an integrated structure as shown in fig. 4, four sheets can be simultaneously processed in the state, after the hot pressing process is finished, the lifting mechanism 3 descends, the device is restored to the state shown in fig. 3 from the state shown in fig. 4, and then the demolding piece 222 in the cavity ejects the product, so that the product can be transported.

Fig. 5 shows another embodiment based on fig. 1, in which, in addition to the bottom of the lowermost mould unit, there is connected a lifting mechanism, between adjacent mould units and between the mould unit and the top plate, a buffer mechanism 4, formed by a cylinder assembly, to control the speed of approach or separation between adjacent mould units, ensuring stability during operation of the device.

Fig. 6 shows another embodiment based on fig. 3, in which the inner wall of the housing is provided with a horizontally extending guide groove 111, in which guide groove 111 the support block 12 is movably mounted, so that the distance between the support block and the mould unit can be adjusted to accommodate different types of moulds.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A sheet molding apparatus, characterized in that: comprises a shell with an inner cavity and a plurality of mould units which are movably arranged in the inner cavity and are coaxially arranged up and down; the machine shell is provided with a plurality of supporting blocks which are arranged up and down, each supporting block corresponds to one die unit, and the outer side surface of the die unit is provided with an outwards extending lap joint lug which can be lapped on the upper surface of the corresponding supporting block; the distance between the supporting block and the outer side surface of the die unit is gradually reduced from top to bottom, and the protruding distance of the lap joint convex block relative to the outer side surface of the die unit is gradually reduced; the protruding distance of the lap joint convex blocks of the die units is smaller than the distance between the corresponding supporting blocks and the outer side surfaces of the die units and is larger than the distance between the non-corresponding supporting blocks above the corresponding supporting blocks and the outer side surfaces of the die units; the die unit is connected with a lifting mechanism capable of controlling the die unit to move up and down; the upper side of the die unit forms a die cavity, and the lower side of the die unit forms a die pressing part which can be embedded into the die cavity.

2. A sheet molding apparatus as defined in claim 1, wherein: the shell is provided with a top plate, and the lower side of the top plate is provided with the die pressing part.

3. A sheet molding apparatus as defined in claim 1, wherein: the shell comprises two opposite inner walls, and the supporting blocks are arranged on the inner walls.

4. A sheet molding apparatus according to claim 3, wherein: the outer side surface of the die unit is in sliding fit with the inner wall, and the lap joint convex blocks extend in a protruding mode along the plane of the inner wall.

5. A sheet molding apparatus as defined in claim 4, wherein: the inner wall is provided with a guide groove extending along the horizontal direction, and the supporting block is movably arranged in the guide groove and connected with the control mechanism.

6. A sheet molding apparatus as defined in claim 1, wherein: the bottom of the cavity is provided with a stripping module which can be raised towards the opening direction of the cavity.

7. A sheet molding apparatus as defined in claim 1, wherein: the lifting mechanism is connected with the bottom of the mould unit positioned at the lowest part.

8. A sheet molding apparatus as defined in claim 7, wherein: the device also comprises a buffer mechanism arranged between the upper die units and the lower die units which are adjacent.

9. A sheet molding apparatus as defined in claim 1, wherein: the middle part of the mould unit is provided with a through hole.

10. A sheet molding apparatus as defined in claim 1, wherein: the die unit comprises a base and a raised machining part arranged in the middle of the upper surface of the base, the die cavity is formed in the middle of the machining part, and the lap joint lug is arranged on the outer side face of the base.