CN114801031A

CN114801031A - Forming device for leisure chair bearing plate

Info

Publication number: CN114801031A
Application number: CN202210219509.XA
Authority: CN
Inventors: 王翠玲; 王加荣; 陈锦才
Original assignee: Xiamen Jinbohui Technology Co ltd
Current assignee: Xiamen Jinbohui Technology Co ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-07-29

Abstract

The invention discloses a forming device of a leisure chair supporting plate, wherein the supporting plate comprises a flexible sheet and a plastic frame, and the forming device comprises a male mold core, a female mold core and a clamping component for clamping and fixing the periphery of the flexible sheet. Through the structural optimization to forming device, with the integrative injection moulding of screen cloth and skeleton and pretension flexible sheet when moulding plastics, processing is convenient, guarantees sufficient tensile force, reduce cost, is convenient for assemble and dismantle the change, improves the quality of product.

Description

Forming device for leisure chair bearing plate

Technical Field

The invention relates to the technical field of molds, in particular to a forming device for a supporting plate of a leisure chair.

Background

Leisure chairs are now widespread, essentially required on every occasion. The mesh cloth of current leisure chaise longue product, seat and back all adopt artifical equipment tensioning on the chair frame, the elasticity is inconsistent, and is difficult to dismantle the change after the assembly. In order to better control the tensioning force of the mesh and take maintenance and disassembly into consideration, it is necessary to research a technology which can solve the tensioning force of the mesh and is convenient for production, and the technology becomes an important subject researched by technicians in the field.

Disclosure of Invention

The invention aims to optimize the structure of the forming device of the leisure chair supporting plate, integrally injection-mold the mesh and the framework, ensure the sufficient tension, reduce the cost, facilitate the assembly, disassembly and replacement and improve the product quality, and is convenient to process.

In order to achieve the purpose, the invention is achieved by the following technical scheme: a forming device of a leisure chair supporting plate comprises a flexible sheet and a plastic frame, wherein the forming device comprises a male mold core and a female mold core; the forming device also comprises a clamping component for clamping and fixing the periphery of the flexible sheet; under the state that the periphery of the flexible sheet is clamped and fixed by the clamping assembly, the convex mold core is abutted against the middle part of the flexible sheet so that the flexible sheet is in a tightened state; in the taut state, the male mold core approaches the female mold core and forms a mold cavity therebetween for molding the plastic frame.

Further, the clamping assembly comprises a first clamping unit and a second clamping unit. The first clamping unit and the second clamping unit are provided with clamping structures which are mutually meshed, and the flexible sheet can be fixed between the first clamping unit and the second clamping unit when the first clamping unit and the second clamping unit are meshed. The first clamping unit comprises a clamping plate and a tooling plate which is in sliding connection with the clamping plate, and the tooling plate is used for preliminarily positioning the flexible sheet and sliding into the tooling plate.

Preferably, the forming device is further provided with a male die fixing plate and an elastic device, the male die core is fixed on the male die fixing plate, and the first clamping unit is sleeved on the periphery of the male die core and is elastically connected with the male die fixing plate through the elastic device. Preferably, the resilient means is a gas spring.

Preferably, all be equipped with clamping structure on frock board and the grip block, when the frock board is installed on the grip block, the clamping structure upper surface of frock board and the clamping part upper surface parallel and level of grip block.

Preferably, the tool plate is in a shape of "]", one open end of the tool plate is arranged in the clamping plate in the injection molding state of the mold, and the closed end of the tool plate is arranged outside the mold and provided with a handle.

Furthermore, after the mould is completely closed, the upper surface of the convex mould core is higher than the upper surfaces of the tooling plate and the clamping plate. The height difference between the upper surfaces of the convex mold core and the clamping structures of the tooling plate and the clamping plate is in direct proportion to the shrinkage rate of the plastic frame.

Compared with the prior art, the invention has the following beneficial effects: the forming device of the leisure chair supporting plate is provided with the clamping assembly for clamping and fixing the flexible sheet and then forming the flexible sheet into a stretched state and bone-plastic frame integrated molding through the convex mold core, is more convenient and faster than manual operation, has high efficiency, has good consistency of the tension of the flexible sheet, can offset the problem that the flexible sheet is loosened due to shrinkage after the plastic frame is formed, is attractive, and ensures enough tension of the flexible sheet. The frock board of centre gripping subassembly can convenient and fast ground take out from the mould, makes flexible sheet can now the mould outside tentatively arrange for install the frock board on put into the mould together again, compares installation operation convenient and fast more in the mould, and the security is also high.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of a molding apparatus according to an embodiment.

FIG. 2 is a schematic cross-sectional view of a molding apparatus according to an embodiment.

FIG. 3 is an enlarged view of a portion of the molding apparatus shown in FIG. 2 according to an embodiment of the present invention.

FIG. 4 is a schematic view showing a state where a tooling plate of a molding apparatus according to an embodiment is taken out.

FIG. 5 is a schematic view of a tooling plate of a molding apparatus according to an embodiment.

FIG. 6 is a schematic view of a tooling plate mounting web of a molding apparatus in preparation for placement into a mold according to one embodiment.

FIG. 7 is a schematic view showing the assembly of a tooling plate and a clamping plate of the molding apparatus according to the first embodiment.

FIG. 8 is a schematic view of a female mold structure of a molding apparatus according to an embodiment.

FIG. 9 is a schematic view showing the structure of the male mold of the molding apparatus according to the first embodiment.

FIG. 10 is a schematic view of a back side structure of a product after being ejected from a molding device according to an embodiment of the present invention.

FIG. 11 is a schematic front view of a product after being ejected from a molding apparatus according to an embodiment of the present invention.

1. A convex die frame; 2. a clamping plate; 3. assembling a plate; 4. a handle; 5. a female die frame; 6. a female mold core; 7. screen cloth; 8. a female die clamping block; 9. a male die clamping block; 10. a male die; 11. a gas spring; 12. a chute; 13. a tool clamping part; 14. a male die clamping portion; 15. a male die core; 16. a female die clamping part; 17. a female die cavity; 18. The back of the plastic piece; 19. the front surface of the plastic part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used only to indicate relative positional relationships that may change when the absolute position of an object being described is changed, and are merely for convenience in describing the invention and to simplify 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 invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

the forming device of the leisure chair bearing plate of the embodiment comprises a flexible sheet and a plastic frame, wherein the flexible sheet is a mesh fabric, and other fabrics or soft steel wire meshes and the like can be used. The molding device comprises a male mold core and a female mold core; the forming device also comprises a clamping component for clamping and fixing the periphery of the flexible sheet; under the state that the clamping assembly clamps and fixes the periphery of the flexible sheet, the convex mold core is abutted against the middle part of the flexible sheet so that the flexible sheet is in a tight state; and in a tightening state, the mold is closed, the male mold core is close to the female mold core, a mold cavity for molding the plastic frame is formed between the male mold core and the female mold core, the flexible sheet part is positioned in the mold cavity formed by the male mold core and the female mold core, when the plastic is injected, the mold cavity is filled with plastic raw materials, and the flexible sheet and the plastic frame are fixed into a whole after the plastic is cooled.

In practical application, the clamping assembly comprises a first clamping unit and a second clamping unit. The first clamping unit and the second clamping unit are provided with clamping structures which are mutually meshed, and the flexible sheet can be fixed between the first clamping unit and the second clamping unit when the first clamping unit and the second clamping unit are meshed. The first clamping unit comprises a clamping plate and a tooling plate which is in sliding connection with the clamping plate, and the tooling plate is used for preliminarily positioning the flexible sheet and sliding into the tooling plate. The clamping structure can be a saw-toothed structure, a net structure or other rugged structures. All be equipped with clamping structure on frock board and the grip block, when the frock board is installed on the grip block, the clamping structure upper surface of frock board and the clamping part upper surface parallel and level of grip block.

The forming device is further provided with a male die fixing plate and an elastic device, the male die core is fixed on the male die fixing plate, and the first clamping unit is sleeved on the periphery of the male die core and is elastically connected with the male die fixing plate through the elastic device. The elastic device is a gas spring, and can also adopt a common spring or elastic rubber.

The tool plate is designed into a shape like a Chinese character 'ji', one end of an opening of the tool plate is arranged in the clamping plate under the injection molding state of the mold, and the closed end of the tool plate is arranged outside the mold and is provided with a handle. During injection molding processing, the tooling plate is firstly drawn out from the die, the flexible sheet is provided with the positioning hole, the positioning hole on the flexible sheet is installed on the positioning column on the tooling plate for preliminary positioning, and then the tooling plate and the screen cloth are integrally placed into the clamping plate through the sliding groove. Because the tool plate is in the shape of a ']', one end of the opening can be inserted into the clamping plate through the sliding groove. Be equipped with the handle on the frock board, the back in the frock board inserts the grip block, and the handle is located the mould outside, can pull out the frock board through the handle behind injection moulding and take off fashioned product.

After the mold is completely closed, the upper surface of the convex mold core is higher than the upper surfaces of the clamping structures of the tooling plate and the clamping plate. Therefore, in the process of die assembly, the first clamping unit and the second clamping unit clamp the flexible sheet firstly, the flexible sheet is tightened to form a plane, the convex die core is abutted to the surface of the flexible sheet, the convex die core drives the flexible sheet to be tightly attached to the concave die core along with the continuous closing of the die, and the flexible sheet is stretched and tightened more tightly. The height difference between the upper surfaces of the convex mold core and the clamping structures of the tooling plate and the clamping plate is in direct proportion to the shrinkage rate of the plastic frame, and the flexible sheet needs to be tensioned in advance to offset the problem of the looseness of the flexible sheet caused by the size shrinkage after the plastic frame is molded because the size shrinkage rate of the plastic piece is reduced after the plastic piece is molded by injection. The higher the upper surfaces of the convex mold core are compared with the upper surfaces of the tooling plate and the clamping plate, the higher the tension degree of the flexible sheet after mold closing is, and the lower the shrinkage and looseness degree of the plastic frame after molding is.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

The technical scheme of the invention is further explained by combining the drawings and the embodiment.

Referring to fig. 1, 2 and 3, the mold is shown in a schematic perspective cross-sectional view. The male die core 10 is fixedly arranged on the male die base 1, the first clamping unit is composed of a clamping plate 2 and a tooling plate 3, the clamping plate 2 and the tooling plate 3 are sleeved on the periphery of the outer portion of the male die core, and a handle 4 is arranged on the tooling plate and facilitates drawing of the tooling plate. The clamping plate 2 is provided with a male die clamping block 9. One end of the gas spring 11 is arranged on the convex die frame, the other end of the gas spring is arranged on the clamping plate 2, and in the die assembly process, the gas spring is compressed, and the clamping plate 2 moves upwards to be close to the convex die frame 1; in the die sinking process, the air spring pushes the clamping plate 2 to move downwards to be far away from the convex die frame, so that the screen cloth 7 can continuously keep a clamping state.

The female die core 8 is fixedly arranged in the female die frame 5, the female die frame 5 is further provided with a female die clamping block 8 which corresponds to the male die clamping block 9, and when the die is closed, the male die clamping block 9 and the female die clamping block 8 are tightly attached to tightly clamp the mesh cloth 7 therein for fixation.

Referring to fig. 4, the clamping plate 2 and the tooling plate 3 are assembled together to fit around the male mold core 10 and can move up and down.

Referring to fig. 4, the tooling plate 3 is pulled out of the slide groove 12 of the clamping plate 2 by pulling the handle 4 before injection molding. A male die clamping block 9 is arranged on the clamping plate 2, a male die clamping part 14 is arranged on the male die clamping block 9, and a regular sawtooth structure is arranged on the surface of the male die clamping part.

Referring to fig. 5, which is a schematic structural diagram of the tooling plate 3, a tooling clamping portion 13 is disposed on the tooling plate 3, and the tooling clamping portion 13 has an uneven surface structure, and is specifically designed to have a regular sawtooth structure identical to that of the punch clamping portion 14.

Referring to fig. 6, the mesh 7 is fixedly mounted on the tooling plate 3, the mesh 7 is provided with positioning holes, and the tooling plate 3 is provided with positioning posts corresponding to the positioning holes for preliminary positioning and mounting. After the installation, the tooling plate 3 with the mesh cloth 7 is pushed into the chute 12 of the clamping plate 2. After the pushing in, the upper surface of the tool clamping portion 13 of the tool plate 2 is flush with the upper surface of the punch clamping portion 14.

Referring to fig. 7, after the tool plate 3 is loaded into the clamping plate 2, the upper surfaces of the punch clamping portion 14 and the tool clamping portion 13 are flush and form a closed ring.

Referring to fig. 8, the female mold clamping block 8 and the female mold core 6 of the female mold frame 5 are assembled. The female die frame 5 is provided with a female die clamping block 8, the female die clamping block 8 is provided with a female die clamping part 16, and the female die clamping part 16 is designed into a sawtooth structure which is the same as the structures of the male die clamping part 14 and the tooling clamping part 13 and is mutually meshed.

A concave die cavity 17 is arranged in the concave die core 6 and used for injection molding.

Referring to fig. 9, in the assembling structure of the male mold core 10, the male mold frame 1 and the gas spring 11, the male mold core 15 matched with the female mold cavity 17 is arranged on the male mold core 10, and after the mold is closed, the male mold core 15 and the female mold cavity 17 jointly form an injection molding space.

Referring to fig. 10, the back side of the injection molded semi-finished product is a plastic part 18 corresponding to the structure formed by the male mold core 15, and the plastic part is located at the middle position of the mesh 7.

Referring to fig. 11, the front side of the semi-finished product after injection molding is removed, the front side 19 of the plastic part corresponds to the structure formed by the cavity 17 of the female mold, and the front side 19 and the back side 18 of the plastic part form a complete plastic frame for firmly fixing the mesh fabric 7 therein.

The innovation point of this scheme protection lies in, through be equipped with the centre gripping subassembly in the forming device with the fixed back rethread convex mould core of flexible sheet centre gripping make its molding of forming the state of tightening and bone plastic frame integral type, than manual operation convenient, efficient and the uniformity of the rate of tension of flexible sheet good, can offset the problem that the shrink leads to flexible sheet to loosen after the shaping of plastic frame, not only beautifully but also guaranteed the sufficient tensile force of flexible sheet. The frock board of centre gripping subassembly can convenient and fast ground take out from the mould, makes flexible sheet can now the mould outside tentatively arrange for install the frock board on put into the mould together again, compares installation operation convenient and fast more in the mould, and the security is also high.

Compared with the prior art, the invention has the advantages that the structure of the forming device is optimized, so that the production efficiency is higher, the tension of the screen cloth is better, and the good tension and elasticity can be ensured after the injection molding search. The processing is convenient, the cost is reduced, the assembly is convenient, and the batch qualification rate and the yield of products are improved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only for the purpose of illustrating the principles of the invention, but that there are many variations, modifications, substitutions and alterations without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A forming device of a leisure chair supporting plate comprises a flexible sheet and a plastic frame, and comprises a male mold core and a female mold core; the method is characterized in that:

the forming device also comprises a clamping component for clamping and fixing the periphery of the flexible sheet;

under the state that the clamping assembly clamps and fixes the periphery of the flexible sheet, the male mold core is abutted against the middle part of the flexible sheet so that the flexible sheet is in a tight state; in the taut state, the male mold core approaches the female mold core and forms a mold cavity therebetween for molding the plastic frame.

2. The molding apparatus as defined in claim 1, wherein the clamping assembly includes a first clamping unit and a second clamping unit.

3. The molding device as claimed in claim 2, further comprising a punch retainer and an elastic device, wherein the punch core is fixed on the punch retainer, and the first clamping unit is sleeved on the periphery of the punch core and elastically connected with the punch retainer through the elastic device.

4. The molding apparatus as defined in claim 2, wherein the first and second clamping units have interengaging clamping structures that secure the flexible sheet between the first and second clamping units when engaged.

5. The molding apparatus as defined in claim 4, wherein the first clamping unit includes a clamping plate and a tooling plate slidably connected to the clamping plate for initially positioning and sliding the flexible sheet material into the tooling plate.

6. The molding apparatus as defined in claim 5, wherein the tooling plate and the clamping plate each have a clamping structure thereon, and wherein an upper surface of the clamping structure of the tooling plate is flush with an upper surface of the clamping portion of the clamping plate when the tooling plate is mounted on the clamping plate.

7. The molding apparatus as defined in claim 5, wherein the tooling plate is "]" -shaped, with the open end of the tooling plate within the clamping plate and the closed end of the tooling plate outside the mold in the mold injection state and provided with a handle.

8. The molding apparatus as defined in claim 3, wherein said elastic means is a gas spring.

9. The molding apparatus as defined in claim 5, wherein an upper surface of the male mold core is higher than an upper surface of the tooling plate and the clamping plate gripping structure after the mold is fully closed.

10. The molding apparatus as defined in claim 9, wherein the difference in height between the male mold core and the upper surface of the clamping structure of the tooling plate and the clamping plate is proportional to the shrinkage rate of the plastic frame.