Plastic chair injection mold

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to an injection mold for a plastic chair. The injection mold comprises an upper mold plate, an injection molding opening assembly is arranged in the upper mold plate, a flow guide plate is arranged below the upper mold plate, meanwhile, a runner plate part is arranged in the flow guide plate, an upper mold base is arranged below the flow guide plate, an upper mold core groove formed below the upper mold base is combined with a lower mold core groove formed above a lower mold base, and a lower mold plate is arranged below the lower mold base. A limiting block and a positioning plate assembly are arranged on the other side of the upper portion of the lower die plate, a driving assembly and a check block assembly are arranged at the two ends of the positioning plate assembly respectively, the driving assembly is fixedly connected with the check block assembly, and meanwhile a core column piece arranged on the inner side of the check block assembly is inserted into the combination position of the upper die core groove and the lower die core groove. Complicated parts of the outer wall of a product are prevented from being clamped in the mold, deformation and damage are avoided, the rejection rate is reduced, and then secondary remodeling is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds and relates to an injection mold for a plastic chair. Background Technique

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, automated operation, a variety of flower patterns and colors, the shape can range from simple to complex, the size can range from large to small, and the product size is precise, the product is easy to update, and it can form parts with complex shapes. Injection molding is suitable for mass production and molding processing fields of products with complex shapes. The chair legs of existing plastic chairs are designed with patterns to increase aesthetics. During injection molding, the complex parts on the outer surface of the product are likely to get stuck on the inner cavity wall of the mold. When directly taking out the parts after injection molding, it will cause certain deformation or damage to the complex parts of the product, resulting in a high rejection rate and the need for recycling and secondary reshaping. Therefore, an injection mold for a plastic chair is proposed for the above problems. Content of the Utility Model

[0003] The purpose of the utility model is to provide an injection mold for a plastic chair for the above problems.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An injection mold for a plastic chair includes an upper template. An injection port assembly is arranged inside the upper template. A diversion plate is arranged below the upper template, and a upper mold base is arranged below the diversion plate. A forming cavity is formed by pressing the upper part of the lower mold base below the upper mold base, and a lower template is arranged below the lower mold base. A limiting block is arranged above the outer side of the lower template, and a positioning plate assembly is arranged between the limiting blocks. A driving component and a blocking component are respectively arranged at both ends inside the positioning plate assembly. One end of the driving component is inserted into the side of the blocking component, and at the same time, the upper part of the blocking component is inserted into the lower part on one side of the upper mold base. A core column part is arranged inside the blocking component, and the core column part is placed between the upper mold base and the lower mold base. A positioning column is arranged above the lower template, and the upper parts of the positioning column are respectively placed inside the lower mold base, the positioning plate assembly, and the upper mold base.

[0006] In the above injection mold for a plastic chair, the injection port assembly is fixedly connected inside the upper template, and the diversion plate is fixedly connected below the upper template. A runner plate part is fixedly connected in the middle of the diversion plate, and the injection port assembly is inserted below the runner plate part. At the same time, the bottom of the injection port assembly is communicated with the inside of the runner plate part.

[0007] In the above injection mold for a plastic chair, the upper part of the diversion plate is fixedly connected to the upper mold base. The runner plate part is inserted and fixedly connected to the inside of the upper mold base below. The upper mold core groove and the clamping part groove are respectively opened at the bottom of the upper mold base, and there is a distance between the upper mold core groove and the clamping part groove.

[0008] In the above-mentioned plastic chair injection mold, a lower mold core groove is provided above the lower mold base, and the lower mold core groove and the upper mold core groove are combined to form an injection cavity inside. The lower mold base is fixedly connected to one side above the lower template.

[0009] In the above-mentioned plastic chair injection mold, limit blocks are fixedly connected to the front and rear sides of the other end above the lower template, and a positioning plate assembly is fixedly connected between the two limit blocks. At the same time, the bottom of the positioning plate assembly is closely attached to the upper side of the lower template. The outer end of the positioning plate assembly is fixedly connected to a driving assembly, and the inner end of the positioning plate assembly is slidably connected to a block assembly.

[0010] In the above-mentioned plastic chair injection mold, the inner end of the driving assembly is inserted and fixedly connected to the inside of the outer side of the block assembly. The lower side of the inner side of the block assembly is closely attached to one side of the lower mold base, and the upper side of the block assembly is inserted and slidably connected into the clamping part of the card.

[0011] In the above-mentioned plastic chair injection mold, one end of a core column part is fixedly connected to the inner side of the block assembly, and the other end of the core column part is inserted into the upper mold core groove and the lower mold core groove. At the same time, the outer wall of the core column part and the inner walls of the upper mold core groove and the lower mold core groove form a cavity for the product part to be completed.

[0012] In the above-mentioned plastic chair injection mold, a plurality of positioning holes are provided on both the upper mold base and the lower mold base, and the plurality of positioning holes in the upper mold base and the lower mold base are coaxial.

[0013] In the above-mentioned plastic chair injection mold, positioning holes are provided at the four corners of the positioning plate assembly, and the positioning holes in the positioning plate assembly are the same as the positioning holes in the upper mold base and the lower mold base.

[0014] In the above-mentioned plastic chair injection mold, a plurality of positioning columns are fixedly connected to the upper side of the lower template, and the upper parts of the positioning columns are inserted and slidably connected into the positioning holes.

[0015] Compared with the existing technology, the advantages of the present utility model are as follows:

[0016] In the present utility model, an injection port assembly is provided inside the upper template, a diversion plate is provided below the upper template, a runner plate part is provided inside the diversion plate, an upper mold base is provided below the diversion plate, an upper mold core groove is provided below the upper mold base and is combined with a lower mold core groove provided above the lower mold base, a lower template is provided below the lower mold base, limit blocks and a positioning plate assembly are provided on the other side above the lower template, a driving assembly and a block assembly are respectively provided at both ends of the positioning plate assembly, and the driving assembly and the block assembly are fixedly connected. At the same time, a core column part provided on the inner side of the block assembly is inserted into the combined part of the upper mold core groove and the lower mold core groove. By using the internal core-pulling design of the mold, it is prevented that the complex parts on the outer wall of the product part are stuck inside the mold, avoiding deformation and breakage, reducing the rejection rate, and thus preventing secondary reshaping.

[0017] Other advantages, objectives, and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an overall schematic diagram of the present utility model;

[0019] Figure 2 is an overall exploded top view schematic diagram of the present utility model;

[0020] Figure 3 is an overall exploded bottom view schematic diagram of the present utility model;

[0021] Figure 4 is a top view schematic diagram above the lower die base and the positioning plate assembly of the present utility model;

[0022] Figure 5 is a schematic diagram of the internal structure cooperation of the present utility model.

[0023] In the figure: 1. upper template; 2. injection port assembly; 3. diversion plate; 31. runner plate part; 4. upper die base; 41. upper die core groove; 42. clamping part groove; 5. lower die base; 51. lower die core groove; 6. lower template; 7. positioning plate assembly; 8. driving assembly; 9. limiting block; 10. stop block assembly; 11. core column part; 12. positioning column; 13. positioning hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be further described below with reference to the accompanying drawings.

[0025] As Figures 1-5 shown, a plastic chair injection mold includes an upper template 1, an injection port assembly 2 is provided inside the upper template 1, a diversion plate 3 is provided below the upper template 1, and an upper die base 4 is provided below the diversion plate 3. An inner forming cavity is formed by pressing the upper part of the lower die base 5 below the upper die base 4, and a lower template 6 is provided below the lower die base 5. A limiting block 9 is provided above the outer side of the lower template 6, and a positioning plate assembly 7 is provided between the limiting blocks 9. A driving assembly 8 and a stop block assembly 10 are respectively provided at both ends inside the positioning plate assembly 7, and one end of the driving assembly 8 is inserted into the side of the stop block assembly 10. At the same time, the upper part of the stop block assembly 10 is inserted into the lower part of one side of the upper die base 4. A core column part 11 is provided inside the stop block assembly 10, and the core column part 11 is placed between the upper die base 4 and the lower die base 5. A positioning column 12 is provided above the lower template 6, and the upper parts of the positioning columns 12 are respectively placed inside the lower die base 5, the positioning plate assembly 7, and the upper die base 4.

[0026] The injection port assembly 2 is fixedly connected inside the upper template 1, and the guide plate 3 is fixedly connected to the lower part of the upper template 1. The middle part of the guide plate 3 is fixedly connected to the flow channel plate part 31, and the flow channel plate part 31 is inserted into the lower part of the injection port assembly 2, and the bottom of the injection port assembly 2 is connected to the flow channel plate part 31.

[0027] Furthermore, the guide plate 3 is fixedly connected to the upper mold base 4 at the bottom, the flow channel plate portion 31 is inserted into the upper mold base 4 at the bottom and fixedly connected, and an upper mold core groove 41 and a clamping groove 42 are respectively opened at the bottom of the upper mold base 4, and there is a distance between the upper mold core groove 41 and the clamping groove 42.

[0028] Furthermore, a lower mold core groove 51 is opened above the lower mold base 5, and the lower mold core groove 51 and the upper mold core groove 41 are combined to form an injection cavity, and the lower mold base 5 is fixedly connected to the upper side of the lower mold plate 6 at the bottom.

[0029] An injection port assembly 2 is provided in the upper mold plate 1, and a guide plate 3 and an upper mold base 4 are provided below the upper mold plate 1. The injection port assembly 2 is first connected to the flow channel plate portion 31 in the guide plate 3, and then inserted into the upper mold base 4 through the bottom of the flow channel plate portion 31, so that the injection liquid can be injected into the entire mold, and the interior where the upper mold core groove 41 and the lower mold core groove 51 are combined can be injected.

[0030] The limit blocks 9 are fixedly connected to the front and rear sides of the other end above the lower template 6, and the positioning plate assembly 7 is fixedly connected between the two limit blocks 9. At the same time, the bottom of the positioning plate assembly 7 is tightly fitted with the top of the lower template 6, the outer end of the positioning plate assembly 7 is fixedly connected to the driving assembly 8, and the inner end of the positioning plate assembly 7 is slidably connected to the stop block assembly 10.

[0031] Furthermore, the inner end of the driving assembly 8 is inserted into the outer side of the fixed connection block assembly 10, the lower inner side of the block assembly 10 is tightly fitted with one side of the lower mold base 5, and the upper part of the block assembly 10 is inserted into the sliding connection card groove 42.

[0032] The block assembly 10 provided on the inner side of the positioning plate assembly 7 cooperates with one side of the upper die base 4 and the lower die base 5 to seal the internal cavity, and the outer side of the block assembly 10 is connected to the driving assembly 8, so that the block assembly 10 can move in the positioning plate assembly 7.

[0033] Furthermore, the inner side of the stopper assembly 10 is fixedly connected to one end of the core column member 11, and the other end of the core column member 11 is inserted into the upper mold core groove 41 and the lower mold core groove 51. At the same time, the outer wall of the core column member 11 and the inner wall of the upper mold core groove 41 and the inner wall of the lower mold core groove 51 form a product cavity.

[0034] The core column member 11 provided on the inner side of the stopper assembly 10 is inserted into the upper mold core groove 41 and the lower mold core groove 51 to form the product inside, and when the mold is opened, the core column member 11 can be pulled out from the inside by utilizing the cooperation of the driving assembly 8 and the stopper assembly 10.

[0035] A plurality of positioning holes 13 are provided in both the upper die base 4 and the lower die base 5, and the plurality of positioning holes 13 in the upper die base 4 and the lower die base 5 are coaxial.

[0036] Furthermore, positioning holes 13 are provided at the four corners of the positioning plate assembly 7, and the positioning holes 13 in the positioning plate assembly 7 are the same as the positioning holes 13 in the upper die base 4 and the lower die base 5.

[0037] Furthermore, a plurality of positioning columns 12 are fixedly connected above the lower template 6, and the upper parts of the positioning columns 12 are inserted and slidably connected into the positioning holes 13.

[0038] The plurality of positioning columns 12 provided above the lower template 6 are respectively inserted into the positioning holes 13 of the lower die base 5, the positioning plate assembly 7 and the upper die base 4. When the mold is closed, the alignment of the upper die base 4 and the lower die base 5 and the alignment of the installation of the positioning plate assembly 7 are ensured by using the positioning columns 12.

[0039] Working principle:

[0040] An injection port assembly 2 is provided in the upper template 1, and a diversion plate 3 is provided below the upper template 1. At the same time, a runner plate part 31 is provided in the diversion plate 3. First, the lower part of the injection port assembly 2 is inserted into and communicated with the runner plate part 31, and injection liquid is injected into the runner plate part 31. An upper die base 4 is provided below the diversion plate 3, and then the lower part of the runner plate part 31 is inserted into the upper die base 4, so that the injection liquid will be injected into the upper die base 4. An upper die core groove 41 is provided below the upper die base 4 and a lower die core groove 51 is provided above the lower die base 5. The two are combined, so that the injection liquid enters the space between the two after combination. A lower template 6 is provided below the lower die base 5, and a limiting block 9 and a positioning plate assembly 7 are provided on the other side above the lower template 6. The limiting block 9 stabilizes the positioning plate assembly 7 above the lower template 6. A driving component 8 and a blocking component 10 are respectively provided at both ends of the positioning plate assembly 7, and the driving component 8 and the blocking component 10 are fixedly connected, so that the blocking component 10 can move in the positioning plate assembly 7 under the action of the driving component 8. At the same time, a core column part 11 provided on the inner side of the blocking component 10 is inserted into the combined part of the upper die core groove 41 and the lower die core groove 51. In addition, the inner side of the blocking component 10 closes one side of the cavity. When the mold is closed and injection is carried out, a product part is formed inside the core column part 11, the upper die core groove 41 and the lower die core groove 51. When the mold is opened, first, the upper die base 4 and the structures above it rise under the action of external force, so that the upper die base 4 is disengaged from above the blocking component 10 and above the lower die base 5. Then, the driving component 8 is started to drive the blocking component 10 to pull out the core column part 11 from the cavity, so that the product part remains in the lower die core groove 51, and finally it can be taken out.

[0041] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar means for substitution, without departing from the spirit of the present utility model.

[0042] Although terms such as 1, upper template; 2, injection port assembly; 3, flow guiding plate; 31, runner plate part; 4, upper die base; 41, upper die core groove; 42, clamping part groove; 5, lower die base; 51, lower die core groove; 6, lower template; 7, positioning plate assembly; 8, driving assembly; 9, limiting block; 10, stopper assembly; 11, core column part; 12, positioning column; 13, positioning hole are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for more conveniently describing and explaining the essence of the present utility model, and interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A plastic chair injection mold, comprising an upper mold plate (1), characterized in that: An injection port assembly (2) is provided in the upper mold plate (1), a guide plate (3) is provided below the upper mold plate (1), and an upper mold base (4) is provided below the guide plate (3), the upper mold base (4) is pressed against the inner molding cavity above the lower mold base (5), and a lower mold plate (6) is provided below the lower mold base (5), a limit block (9) is provided above the outer side of the lower mold plate (6), and a positioning plate assembly (7) is provided between the limit blocks (9), and a driving assembly (8) and a positioning plate assembly (7) are provided at both ends of the positioning plate assembly (7). A stopper assembly (10) is provided, and one end of the driving assembly (8) is inserted into the side of the stopper assembly (10), and the upper part of the stopper assembly (10) is inserted into the lower part of one side of the upper die seat (4). A core column component (11) is provided on the inner side of the stopper assembly (10), and the core column component (11) is placed between the upper die seat (4) and the lower die seat (5). A positioning column (12) is provided above the lower die plate (6), and the upper part of the positioning column (12) is respectively placed in the lower die seat (5), the positioning plate assembly (7), and the upper die seat (4).

2. The plastic chair injection mold according to claim 1, characterized in that: The upper mold plate (1) is fixedly connected to the injection port assembly (2), and the lower part of the upper mold plate (1) is fixedly connected to the guide plate (3), the middle part of the guide plate (3) is fixedly connected to the flow channel plate portion (31), and the flow channel plate portion (31) is inserted into the lower part of the injection port assembly (2), and the bottom of the injection port assembly (2) is connected to the flow channel plate portion (31).

3. The plastic chair injection mold according to claim 2, characterized in that: The lower part of the guide plate (3) is fixedly connected to the upper part of the upper die seat (4), the lower part of the flow channel plate portion (31) is inserted into the upper die seat (4) and fixedly connected thereto, and the bottom of the upper die seat (4) is respectively provided with an upper die core groove (41) and a clamping groove portion (42), and there is a distance between the upper die core groove (41) and the clamping groove portion (42).

4. The plastic chair injection mold according to claim 3, characterized in that: A lower mold core groove (51) is provided above the lower mold base (5), and the lower mold core groove (51) and the upper mold core groove (41) are combined to form an injection cavity. The lower mold base (5) is fixedly connected to the upper side of the lower mold plate (6) at the bottom.

5. The plastic chair injection mold according to claim 4, characterized in that: The front and rear sides of the other end above the lower template (6) are fixedly connected to limit blocks (9), and the positioning plate assembly (7) is fixedly connected between the two limit blocks (9). At the same time, the bottom of the positioning plate assembly (7) is tightly fitted with the upper part of the lower template (6). The outer end of the positioning plate assembly (7) is fixedly connected to the driving assembly (8), and the inner end of the positioning plate assembly (7) is slidably connected to the stop block assembly (10).

6. The plastic chair injection mold according to claim 5, characterized in that: The inner end of the driving assembly (8) is inserted into the outer side of the fixed connection block assembly (10), the lower inner side of the block assembly (10) is tightly fitted with one side of the lower die base (5), and the upper part of the block assembly (10) is inserted into the sliding connection clamping groove (42).

7. The plastic chair injection mold according to claim 6, characterized in that: The inner side of the stopper assembly (10) is fixedly connected to one end of the core column member (11), and the other end of the core column member (11) is inserted into the upper mold core groove (41) and the lower mold core groove (51), and at the same time, the outer wall of the core column member (11) and the inner wall of the upper mold core groove (41) and the inner wall of the lower mold core groove (51) form a product cavity.

8. The plastic chair injection mold according to claim 7, characterized in that: The upper die seat (4) and the lower die seat (5) are both provided with a plurality of positioning holes (13), and the plurality of positioning holes (13) in the upper die seat (4) and the lower die seat (5) are coaxial.

9. The plastic chair injection mold according to claim 8, characterized in that: The positioning plate assembly (7) is provided with positioning holes (13) at the four corners, and the positioning holes (13) in the positioning plate assembly (7) are the same as the positioning holes (13) in the upper die seat (4) and the lower die seat (5).

10. The plastic chair injection mold according to claim 9, characterized in that: A plurality of positioning columns (12) are fixedly connected to the upper portion of the lower template (6), and the upper portions of the positioning columns (12) are inserted into the sliding connection positioning holes (13).

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