Integrated chair surface leg forming mechanism of plastic chair injection mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to an integrated chair surface leg forming mechanism of a plastic chair injection mold. The plastic chair forming die comprises a plastic chair forming lower die and a plastic chair forming upper die. In the injection molding process, the plastic chair molding lower mold and the plastic chair molding upper mold are close to each other, so that the chair leg integrated molding structure is attached to the plastic chair molding lower mold and the plastic chair molding upper mold, and a molten material is injected into the mold cavity through the injection molding part; the rear chair leg auxiliary forming part and the front chair leg auxiliary forming part are respectively matched with the chair leg integrated forming structure and are used for synchronously forming four chair legs and a chair body structure of the plastic chair, and the chair surface forming part is matched with the chair back forming part and is used for forming a backrest structure of the plastic chair. Secondary installation is not needed, an integrated structure is adopted, the overall structural strength of the chair is enhanced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mould technical field relates to a kind of integrated chair surface foot forming mechanism of plastic chair injection mould. BACKGROUND

[0002] Plastic products are produced by injection mould, for example, plastic chairs used in daily life, which mainly include chair legs, seats and backrest. Currently, plastic chairs are generally injection molded by injection mold. The conventional plastic chair mold divides the plastic parts into two parts for injection molding. One mold is used to injection mold the chair body, and the other mold is used to injection mold the chair legs. The chair body and chair legs are then installed again through a connecting piece. The connection structure of the chair has general structural strength, is prone to damage, and affects the overall service life of the chair. Therefore, there is an urgent need to design a plastic chair injection mold integrated chair foot, chair body and backrest structure that can be integrally formed without the need for secondary installation. The integrated structure enhances the overall structural strength of the chair and improves the service life of the plastic chair injection mold integrated chair surface foot forming mechanism.

[0003] In order to overcome the shortcomings of the prior art, people have continuously explored and proposed various solutions. For example, a plastic chair mold chair leg rocker type core-pulling locking mechanism [application number: 201610591338.8] is disclosed in Chinese patent. The mechanism includes a movable die plate and a fixed die plate. A sprue plate is installed on the fixed die plate. A seat and backrest insert is installed in the movable die plate. A seat and leg insert is provided on the movable die plate and the seat and backrest insert. A backrest insert is installed in the fixed die plate. An upper core-pulling slider is provided with an upper locking protrusion. One end of the locking rod cooperates with the locking protrusion. A top rod is installed on the outer wall of the movable die plate. The top rod is located below the other end of the locking rod. A compression spring is provided in the sprue plate. A pressure rod passes through the compression spring. The pressure rod is inserted into the other end of the locking rod, and the compression spring is pressed above the other end of the locking rod. A lower core-pulling slider is provided with a lower locking protrusion. A lower locking groove is provided in the movable die plate. The lower locking protrusion cooperates with the lower locking groove. An open mold oil cylinder is installed on the side wall of the seat and leg insert. The open mold oil cylinder is connected to the fixed die plate. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above problems, and provides an integrated chair surface foot forming mechanism of plastic chair injection mould.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The application discloses a one-piece chair surface and leg forming mechanism of a plastic chair injection mold, which comprises a plastic chair forming lower mold and a plastic chair forming upper mold, an injection main plate is arranged above the plastic chair forming upper mold, a chair leg one-piece forming structure is arranged between the plastic chair forming lower mold and the plastic chair forming upper mold, a rear chair leg auxiliary forming part is arranged in the plastic chair forming upper mold, a front chair leg auxiliary forming part is arranged in the plastic chair forming lower mold, the rear chair leg auxiliary forming part and the front chair leg auxiliary forming part are respectively matched with the positions of the chair leg one-piece forming structure and are matched in shape, a chair surface forming part is arranged in the plastic chair forming lower mold, a chair back forming part is arranged in the plastic chair forming upper mold, the positions of the chair surface forming part and the chair back forming part are matched and the shapes are matched, and an injection part is arranged in the injection main plate.

[0007] In the one-piece chair surface and leg forming mechanism of the plastic chair injection mold, the chair leg one-piece forming structure comprises a chair leg forming nest arranged between the plastic chair forming lower mold and the plastic chair forming upper mold, the chair leg forming nest is provided with a rear chair leg forming surface and a front chair leg forming surface, the rear chair leg forming surface is arranged opposite to the rear chair leg auxiliary forming part, and the front chair leg forming surface is arranged opposite to the front chair leg auxiliary forming part.

[0008] In the one-piece chair surface and leg forming mechanism of the plastic chair injection mold, the rear chair leg auxiliary forming part comprises a rear chair leg auxiliary forming cavity arranged in the plastic chair forming upper mold, and the rear chair leg auxiliary forming cavity is matched with the position of the rear chair leg forming surface and is matched in shape.

[0009] In the one-piece chair surface and leg forming mechanism of the plastic chair injection mold, the front chair leg auxiliary forming part comprises a front chair leg auxiliary forming cavity arranged in the plastic chair forming lower mold, and the front chair leg auxiliary forming cavity is matched with the position of the front chair leg forming surface and is matched in shape.

[0010] In the one-piece chair surface and leg forming mechanism of the plastic chair injection mold, a positioning and anti-deviation part is arranged at the top of the chair leg forming nest, and the positioning and anti-deviation part is clamped and matched with the plastic chair forming upper mold.

[0011] In the one-piece chair surface and leg forming mechanism of the plastic chair injection mold, the positioning and anti-deviation part comprises an anti-deviation protrusion arranged at the top of the chair leg forming nest, a positioning rod is arranged on the anti-deviation protrusion, a rod sleeve is arranged in the plastic chair forming upper mold, and the positioning rod is clamped and matched with the rod sleeve.

[0012] In the one-piece chair surface and leg forming mechanism of the plastic chair injection mold, the plastic chair forming upper mold is provided with a limiting sliding groove, and the anti-deviation protrusion is slidingly matched with the limiting sliding groove.

[0013] In the integral chair surface foot forming mechanism of the plastic chair injection mold, the chair surface forming part comprises a chair surface forming cavity arranged in the plastic chair forming lower mold, the chair back forming part comprises a chair back forming protrusion arranged in the plastic chair forming upper mold, and the chair surface forming cavity and the chair back forming protrusion correspond in position and match in shape.

[0014] In the integral chair surface foot forming mechanism of the plastic chair injection mold, the injection part comprises an injection main hole arranged in the injection main plate.

[0015] In the integral chair surface foot forming mechanism of the plastic chair injection mold, the plastic chair forming upper mold is provided with an injection branch runner, and the injection branch runner is in communication with the injection main hole.

[0016] Compared with the prior art, the plastic chair injection mold has the following advantages:

[0017] 1、The plastic chair injection mold has the following advantages: in the injection process, the plastic chair forming lower mold and the plastic chair forming upper mold are moved close to each other, the chair foot integrated forming structure is attached to the plastic chair forming lower mold and the plastic chair forming upper mold, the molten material is injected into the cavity through the injection part, the rear chair foot auxiliary forming part and the front chair foot auxiliary forming part are matched with the chair foot integrated forming structure respectively, and the four chair feet and the chair body structure of the plastic chair are formed synchronously, the chair surface forming part and the chair back forming part are matched to form the backrest structure of the plastic chair, the chair foot, the chair body and the backrest structure of the plastic chair are integrally formed by the mold, secondary installation is not needed, the integral structure is adopted, the overall structural strength of the chair is enhanced, and the service life is prolonged.

[0018] 2、The plastic chair injection mold has the following advantages: after the injection is completed, the mold is opened, the anti-deviation protrusion is in sliding cooperation with the limiting sliding groove, the chair foot forming embedding seat can be limited, angle deviation of the chair foot forming embedding seat in the demolding process is avoided, and the chair foot forming embedding seat and the formed plastic part are prevented from colliding.

[0019] Other advantages, objects and features of the plastic chair injection mold will be embodied partly through the following description and partly through the research and practice of the plastic chair injection mold by those skilled in the art. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the plastic chair injection mold.

[0021] Figure 2 is a partial structural schematic view of the plastic chair injection mold.

[0022] Figure 3 is a structural schematic view of the chair foot integrated forming structure.

[0023] Figure 4 is a structural schematic view of the plastic chair forming upper mold.

[0024] In the figure: plastic chair forming lower die 1, plastic chair forming upper die 2, injection molding main plate 3, chair leg integrated forming structure 4, rear chair leg auxiliary forming part 5, front chair leg auxiliary forming part 6, chair surface forming part 7, chair back forming part 8, injection molding part 9, chair leg forming nest 10, rear chair leg forming surface 11, front chair leg forming surface 12, rear chair leg auxiliary forming cavity 13, front chair leg auxiliary forming cavity 14, positioning anti-deviation part 15, anti-deviation protrusion 16, positioning rod 17, rod sleeve 18, limiting sliding groove 19, chair surface forming cavity 20, chair back forming protrusion 21, injection molding main hole 22, injection molding branch 23. DETAILED DESCRIPTION

[0025] The utility model will be further explained in connection with the drawings below.

[0026] As Figures 1-4 shown, a plastic chair injection mold integrated chair surface leg forming mechanism, including plastic chair forming lower die 1 and plastic chair forming upper die 2, the plastic chair forming upper die 2 top is equipped with injection molding main plate 3, the plastic chair forming lower die 1 and plastic chair forming upper die 2 between being equipped with chair leg integrated forming structure 4, the plastic chair forming upper die 2 is equipped with rear chair leg auxiliary forming part 5, the plastic chair forming lower die 1 is equipped with front chair leg auxiliary forming part 6, rear chair leg auxiliary forming part 5 and front chair leg auxiliary forming part 6 respectively with the position corresponding with the shape of chair leg integrated forming structure 4 is adapted, the plastic chair forming lower die 1 is equipped with chair surface forming part 7, the plastic chair forming upper die 2 is equipped with chair back forming part 8, the position of chair surface forming part 7 and chair back forming part 8 corresponds and shape is adapted, the injection molding main plate 3 is equipped with injection molding part 9.

[0027] In the embodiment, in the injection molding process, the plastic chair forming lower die 1 and the plastic chair forming upper die 2 are close to each other, so that the chair leg integrated forming structure 4 is attached to the plastic chair forming lower die 1 and the plastic chair forming upper die 2, the molten material is injected into the cavity through the injection molding part 9, the rear chair leg auxiliary forming part 5 and the front chair leg auxiliary forming part 6 are respectively matched with the chair leg integrated forming structure 4 to synchronously form the four chair legs and the chair body structure of the plastic chair, the chair surface forming part 7 is matched with the chair back forming part 8 to form the backrest structure of the plastic chair, the chair leg, the chair body and the backrest structure of the plastic chair are integrally formed by the mold, without the need for secondary installation, the integrated structure is adopted, the overall structural strength of the chair is enhanced, and the service life is improved.

[0028] In combination Figures 1-4As shown, the chair leg integrated forming structure 4 comprises a chair leg forming nest 10 arranged between the lower mold 1 and the upper mold 2, the chair leg forming nest 10 is provided with a rear chair leg forming surface 11 and a front chair leg forming surface 12, the rear chair leg forming surface 11 is arranged opposite to the rear chair leg auxiliary forming part 5, and the front chair leg forming surface 12 is arranged opposite to the front chair leg auxiliary forming part 6, the rear chair leg auxiliary forming part 5 comprises a rear chair leg auxiliary forming cavity 13 arranged in the upper mold 2, the rear chair leg auxiliary forming cavity 13 corresponds to the position of the rear chair leg forming surface 11 and is matched in shape, and the front chair leg auxiliary forming part 6 comprises a front chair leg auxiliary forming cavity 14 arranged in the lower mold 1, the front chair leg auxiliary forming cavity 14 corresponds to the position of the front chair leg forming surface 12 and is matched in shape.

[0029] In the embodiment, in the injection molding process, the rear chair leg auxiliary forming cavity 13 cooperates with the rear chair leg forming surface 11 to form the rear chair leg structure of the plastic chair, and the front chair leg auxiliary forming cavity 14 cooperates with the front chair leg forming surface 12 to form the front chair leg structure of the plastic chair.

[0030] The chair leg forming nest 10 is provided with a positioning and anti-deviation part 15 at the top, and the positioning and anti-deviation part 15 is clamped and matched with the upper mold 2.

[0031] In the embodiment, in the mold closing process, the positioning and anti-deviation part 15 is clamped and matched with the upper mold 2 to form accurate positioning and ensure the accuracy of injection molding.

[0032] In combination Figure 2 , Figure 4 As shown, the positioning and anti-deviation part 15 comprises an anti-deviation protrusion 16 arranged at the top of the chair leg forming nest 10, the anti-deviation protrusion 16 is provided with a positioning rod 17, the upper mold 2 is provided with a rod sleeve 18, and the positioning rod 17 is clamped and matched with the rod sleeve 18.

[0033] In the embodiment, in the mold closing process, the positioning rod 17 is clamped and matched with the rod sleeve 18 to realize accurate positioning and ensure the accuracy of injection molding.

[0034] The upper mold 2 is provided with a limiting sliding groove 19, and the anti-deviation protrusion 16 is slidingly matched with the limiting sliding groove 19.

[0035] In the embodiment, after the injection molding is completed, the mold is opened, the anti-deviation protrusion 16 is slidingly matched with the limiting sliding groove 19, the chair leg forming nest 10 is limited, the angle deviation of the chair leg forming nest 10 in the demolding process is avoided, and the collision between the chair leg forming nest 10 and the formed plastic part is avoided.

[0036] In combination Figures 1-4As shown, the chair surface forming part 7 comprises a chair surface forming cavity 20 arranged in the plastic chair forming lower die 1, the chair back forming part 8 comprises a chair back forming protrusion 21 arranged in the plastic chair forming upper die 2, the chair surface forming cavity 20 and the chair back forming protrusion 21 correspond in position and match in shape.

[0037] In the embodiment, in the injection molding process, the chair surface forming cavity 20 and the chair back forming protrusion 21 cooperate to form the back structure of the plastic chair.

[0038] In combination Figures 1-4 As shown, the injection part 9 comprises an injection main hole 22 arranged in the injection main plate 3, the plastic chair forming upper die 2 is provided with an injection branch channel 23, and the injection branch channel 23 is in communication with the injection main hole 22.

[0039] In the embodiment, in the injection molding process, the molten material is injected into the injection branch channel 23 through the injection main hole 22, and the injection branch channel 23 is used for injection branch, so that the injection rate and area are accelerated.

[0040] The working principle of the utility model is:

[0041] In the injection molding process, the plastic chair forming lower die 1 and the plastic chair forming upper die 2 are close to each other, the chair leg integrated forming structure 4 is attached to the plastic chair forming lower die 1 and the plastic chair forming upper die 2, the molten material is injected into the injection branch channel 23 through the injection main hole 22, the injection branch channel 23 is used for injection branch, so that the injection rate and area are accelerated, the rear chair leg auxiliary forming cavity 13 cooperates with the rear chair leg forming surface 11 to form the rear chair leg structure of the plastic chair, the front chair leg auxiliary forming cavity 14 cooperates with the front chair leg forming surface 12 to form the front chair leg structure of the plastic chair, the chair surface forming cavity 20 cooperates with the chair back forming protrusion 21 to form the back structure of the plastic chair, the mold integrally forms the chair leg, the chair body and the back structure of the plastic chair, secondary installation is not needed, the integral structure is adopted, the overall structural strength of the chair is enhanced, the service life is improved,

[0042] In the mold clamping process, the positioning rod 17 is clamped and matched with the rod sleeve 18 to realize accurate positioning and ensure the accuracy of injection molding,

[0043] After the injection molding is completed, the mold is opened, the anti-deviation protrusion 16 is slidingly matched with the limiting sliding groove 19 to limit the chair leg forming embedding seat 10, so that the angle deviation of the chair leg forming embedding seat 10 in the demolding process is avoided, and the collision between the chair leg forming embedding seat 10 and the molded plastic part is avoided.

[0044] The specific embodiments described herein are merely illustrative of the present application. Various modifications or changes can be made to the specific embodiments described herein by those skilled in the art of the present application without departing from the spirit of the present application.

[0045] Although the terms such as plastic chair forming lower die 1, plastic chair forming upper die 2, injection molding main plate 3, chair leg integrated forming structure 4, rear chair leg auxiliary forming part 5, front chair leg auxiliary forming part 6, chair surface forming part 7, chair back forming part 8, injection molding part 9, chair leg forming seat 10, rear chair leg forming surface 11, front chair leg forming surface 12, rear chair leg auxiliary forming cavity 13, front chair leg auxiliary forming cavity 14, positioning anti-deviation part 15, anti-deviation protrusion 16, positioning rod 17, rod sleeve 18, limiting sliding groove 19, chair surface forming cavity 20, chair back forming protrusion 21, injection molding main hole 22, injection molding branch channel 23 are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application, and any additional limitation is contrary to the spirit of the present application.

Claims

1. An integrated chair seat and foot molding mechanism of a plastic chair injection mold, comprising a plastic chair molding lower mold (1) and a plastic chair molding upper mold (2), characterized in that: The upper die (2) of the plastic chair forming is provided with an injection main plate (3), the lower die (1) and the upper die (2) of the plastic chair forming are provided with a chair leg integrated forming structure (4), the upper die (2) of the plastic chair forming is provided with a rear chair leg auxiliary forming part (5), the lower die (1) of the plastic chair forming is provided with a front chair leg auxiliary forming part (6), the rear chair leg auxiliary forming part (5) and the front chair leg auxiliary forming part (6) are respectively corresponding to the position of the chair leg integrated forming structure (4) and the shape is matched, the lower die (1) of the plastic chair forming is provided with a chair surface forming part (7), the upper die (2) of the plastic chair forming is provided with a chair back forming part (8), the chair surface forming part (7) and the chair back forming part (8) are corresponding to the position and the shape is matched, the injection main plate (3) is provided with an injection part (9).

2. The integral seat pan foot forming mechanism of a plastic chair injection mold according to claim 1, wherein, The chair leg integrated forming structure (4) includes a chair leg forming nest (10) arranged between the lower die (1) and the upper die (2) of the plastic chair forming, the chair leg forming nest (10) has a rear chair leg forming surface (11) and a front chair leg forming surface (12), the rear chair leg forming surface (11) is arranged opposite to the rear chair leg auxiliary forming part (5), and the front chair leg forming surface (12) is arranged opposite to the front chair leg auxiliary forming part (6).

3. The integral seat pan leg forming mechanism of a plastic chair injection mold according to claim 2, wherein, The rear chair leg auxiliary forming part (5) includes a rear chair leg auxiliary forming cavity (13) arranged in the upper die (2) of the plastic chair forming, the rear chair leg auxiliary forming cavity (13) is corresponding to the position of the rear chair leg forming surface (11) and the shape is matched.

4. The integral seat pan leg forming mechanism of a plastic chair injection mold according to claim 3, wherein, The front chair leg auxiliary forming part (6) includes a front chair leg auxiliary forming cavity (14) arranged in the lower die (1) of the plastic chair forming, the front chair leg auxiliary forming cavity (14) is corresponding to the position of the front chair leg forming surface (12) and the shape is matched.

5. The integral seat pan leg forming mechanism of a plastic chair injection mold according to claim 4, wherein, The chair leg forming nest (10) is provided with a positioning and anti-deviation part (15) at the top, and the positioning and anti-deviation part (15) is clamped and matched with the upper die (2) of the plastic chair forming.

6. The integral seat pan leg forming mechanism of a plastic chair injection mold according to claim 5, wherein, The positioning and anti-deviation part (15) includes an anti-deviation protrusion (16) arranged at the top of the chair leg forming nest (10), the anti-deviation protrusion (16) is provided with a positioning rod (17), the upper die (2) of the plastic chair forming is provided with a rod sleeve (18), and the positioning rod (17) is clamped and matched with the rod sleeve (18).

7. The integral seat pan leg forming mechanism of a plastic chair injection mold according to claim 6, wherein, The upper die (2) of the plastic chair forming is provided with a limiting sliding groove (19), and the anti-deviation protrusion (16) is slidingly matched with the limiting sliding groove (19).

8. The integral seat pan leg forming mechanism of a plastic chair injection mold according to claim 7, wherein, The chair surface forming part (7) includes a chair surface forming cavity (20) arranged in the lower die (1) of the plastic chair forming, the chair back forming part (8) includes a chair back forming protrusion (21) arranged in the upper die (2) of the plastic chair forming, and the chair surface forming cavity (20) is corresponding to the position of the chair back forming protrusion (21) and the shape is matched.

9. The integral seat pan leg forming mechanism of a plastic chair injection mold according to claim 8, wherein, The injection part (9) includes an injection main hole (22) arranged in the injection main plate (3).

10. The integral seat pan leg forming mechanism of a plastic chair injection mold according to claim 9, wherein, The upper die (2) of the plastic chair forming is provided with an injection branch channel (23), and the injection branch channel (23) is communicated with the injection main hole (22).

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