Foldable plastic turnover box injection mold

Abstract

The utility model provides a foldable plastic turnover box injection mold, and belongs to the technical field of molds. The mold comprises a mold body, and a turnover box forming cavity composed of a left folding side plate forming part, a right folding side plate forming part, a front folding side plate forming part, a rear folding side plate forming part and a box body bottom plate forming part is arranged in the mold body, wherein the left folding side plate forming part and the right folding side plate forming part are oppositely arranged. A turnover box forming cavity composed of two left and right side folding side plate forming parts, two front and rear side folding side plate forming parts and a box body bottom plate forming part can be used for forming a folding turnover box through one-time injection molding, and the handle forming structure can be used for directly forming handles connected with left and right side folding side plates of the turnover box during injection molding. Batch production and assembling are not needed, the cost of production equipment is effectively reduced, the production efficiency is improved, and the side plate positioning hole forming mechanism can form positioning holes in the two sides of the folded side plates on the left side and the right side when the turnover box is subjected to injection molding.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a foldable plastic turnover box injection mold. Background Art

[0002] At present, foldable plastic turnover boxes are becoming more and more popular. Foldable plastic turnover boxes are generally produced by injection molding, but the plastic foldable turnover boxes produced by molds in the prior art do not have handles. If the foldable plastic turnover boxes need to be equipped with handles, they need to be additionally produced for assembly, which is time-consuming and labor-intensive.

[0003] For example, a Chinese patent discloses an injection mold for a turnover box [application number: 201621389688.8], which includes a mold frame, a fixed mold and a movable mold are provided on the mold frame, a core for forming the internal space of the turnover box is provided on the movable mold, a side drawer block distributed around the core is provided on the fixed mold, a mold cavity consistent with the structure of the turnover box is formed between the core, the side drawer block and the bottom wall of the fixed mold, a side drawer mechanism for side drawer block is connected to the side drawer block, a groove for injection molding a handle of the turnover box is provided on the side drawer block, a core drawer block whose one side is inserted into the groove to form a space for the handle of the turnover box is provided in the groove, a driving rod that can slide linearly is passed through the side drawer block, a T-shaped and obliquely extending clamping edge is provided on the driving rod, a sliding groove cooperating with the clamping edge is provided on the core drawer block, a first driving member that drives it to slide is connected to the driving rod, and the driving rod drives the core drawer block to be pulled out and slide into the groove through the clamping edge. Utility Model Content

[0004] The purpose of the utility model is to provide a foldable plastic turnover box injection mold in view of the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A foldable plastic turnover box injection mold includes a mold main body, wherein a turnover box molding cavity is arranged in the mold main body, which is composed of two oppositely arranged left and right folding side panel molding parts, two oppositely arranged front and rear folding side panel molding parts and a box bottom plate molding part. The left and right folding side panel molding parts and the front and rear folding side panel molding parts are all connected to the box bottom plate molding part. Two handle molding structures respectively connected to the left and right folding side panel molding parts are also arranged in the mold main body. Side panel positioning hole molding mechanisms are also symmetrically arranged on the left and right sides of the mold main body.

[0007] In the above-mentioned foldable plastic turnover box injection mold, the handle molding structure includes a handle molding part arranged in the mold body, and three handle connecting belt molding parts are arranged between the handle molding part and the left and right folding side panel molding parts.

[0008] In the above-mentioned foldable plastic turnover box injection mold, the three handle connecting belt forming parts are connected to the two sides and the middle position of the left and right folding side panel forming parts respectively at one end away from the handle forming part.

[0009] In the above-mentioned foldable plastic turnover box injection mold, two finger hole forming parts are also provided in the handle forming part.

[0010] In the above-mentioned foldable plastic turnover box injection mold, three handle reinforcing rib forming parts are further provided on the front and back sides of the handle forming part, respectively extending to the handle connecting belt forming part.

[0011] In the above-mentioned foldable plastic turnover box injection mold, the side panel positioning hole forming mechanism includes two positioning hole forming rods horizontally inserted into the left and right folding side panel forming parts and two translation drive components respectively connected to the two positioning hole forming rods.

[0012] In the above-mentioned foldable plastic turnover box injection mold, the translation drive assembly includes a core pulling seat fixedly connected to the positioning hole forming rod and a translation drive connected to the core pulling seat. A limiting structure corresponding to the core pulling seat is also provided in the mold body, and the limiting structure includes two limiting pressure plates.

[0013] In the above-mentioned foldable plastic turnover box injection mold, the mold body is also provided with a multi-point glue injection component that can directly inject glue into the left and right folding side panel forming parts, the front and rear folding side panel forming parts, the box bottom plate forming part and the handle forming part.

[0014] In the above-mentioned foldable plastic turnover box injection mold, the multi-point glue injection component includes an injection liquid diverter plate, and the injection liquid diverter plate is connected to a plurality of injection tubes respectively connected to the left and right side folding side panel forming parts, the front and rear side folding side panel forming parts, the box bottom panel forming part and the handle forming part.

[0015] In the above-mentioned foldable plastic turnover box injection mold, the multi-point glue injection component also includes an insulation kit, the bottom of the injection tube is inserted into the insulation kit, and the bottom of the insulation kit connected to the front and rear folding side panel molding parts has an inwardly recessed rib molding groove.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. The turnover box molding cavity composed of two left and right folding side panel molding parts, two front and rear folding side panel molding parts and a box bottom panel molding part can be injection molded into a folding turnover box at one time. The handle molding structure can directly mold handles connected to the left and right folding side panels of the turnover box during injection molding, without the need for batch production and then assembly, which effectively reduces the cost of production equipment and improves production efficiency. The side panel positioning hole molding mechanism can mold positioning holes on both sides of the left and right folding side panels during injection molding of the turnover box.

[0018] 2. The handle forming unit can directly form the handle during the injection molding of the turnover box. The three handle connecting belt forming units can form the handle connecting belts connecting the left and right folding side panels and the handle during the injection molding of the turnover box. The two finger hole forming units can form two finger holes on the handle during the injection molding of the turnover box. The handle reinforcement rib forming unit can form handle reinforcement ribs on the front and back sides of the handle and the handle connecting belt during the injection molding of the turnover box, thereby improving the overall strength of the handle and the handle connecting belt.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the turnover box forming cavity;

[0023] Figure 4 yes Figure 2 A magnified schematic diagram of center A.

[0024] In the figure, the mold body 1, the left and right folding side panel forming part 2, the front and rear folding side panel forming part 3, the box bottom plate forming part 4, the turnover box forming cavity 5, the handle forming structure 6, the side panel positioning hole forming mechanism 7, the handle forming part 8, the handle connecting belt forming part 9, the finger hole forming part 10, the handle reinforcement rib forming part 11, the positioning hole forming rod 12, the translation drive component 13, the core pulling seat 14, the translation drive 15, the limit pressure plate 16, the multi-point glue feeding component 17, the injection liquid diverter plate 18, the injection tube 19, the insulation kit 20, and the rib forming groove 21. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 4As shown, a foldable plastic turnover box injection mold includes a mold body 1, and the mold body 1 is provided with a turnover box molding cavity 5 composed of two oppositely arranged left and right folding side panel forming parts 2, two oppositely arranged front and rear folding side panel forming parts 3 and a box bottom plate forming part 4. The left and right folding side panel forming parts 2 and the front and rear folding side panel forming parts 3 are all connected to the box bottom plate forming part 4. The mold body 1 is also provided with two handle molding structures 6 respectively connected to the left and right folding side panel molding parts 2, and the left and right sides of the mold body 1 are also symmetrically provided with side panel positioning hole molding mechanisms 7.

[0026] In the utility model, the turnover box molding cavity 5 composed of two left and right folding side panel molding parts 2, two front and rear folding side panel molding parts 3 and a box bottom panel molding part 4 can be injection molded into a foldable turnover box at one time. The handle molding structure 6 can directly mold handles connected to the left and right folding side panels of the turnover box during injection molding, without the need for batch production and then assembly, effectively reducing the cost of production equipment and improving production efficiency. The side panel positioning hole molding mechanism 7 can mold positioning holes on both sides of the left and right folding side panels when the turnover box is injection molded.

[0027] Specifically, the handle forming structure 6 includes a handle forming part 8 arranged in the mold body 1, and three handle connecting belt forming parts 9 are arranged between the handle forming part 8 and the left and right folding side panel forming parts 2. The three handle connecting belt forming parts 9 are connected to the two sides and the middle position of the left and right folding side panel forming parts 2 at one end away from the handle forming part 8.

[0028] The handle forming part 8 can directly form the handle when the turnover box is injection molded, and the three handle connecting belt forming parts 9 can form the handle connecting belts connecting the left and right folding side panels and the handle when the turnover box is injection molded.

[0029] Specifically, two finger hole forming parts 10 are further provided in the handle forming part 8, and the two finger hole forming parts can form two finger holes on the handle during the injection molding of the turnover box.

[0030] Specifically, three handle reinforcement rib forming parts 11 are provided on the front and back sides of the handle forming part 8, respectively extending to the handle connecting belt forming part 9. The handle reinforcement rib forming part 11 can form handle reinforcement ribs on the front and back sides of the handle and the handle connecting belt during injection molding of the turnover box, thereby improving the overall strength of the handle and the handle connecting belt.

[0031] Specifically, the side panel positioning hole forming mechanism 7 includes two positioning hole forming rods 12 horizontally inserted into the left and right folding side panel forming parts 2 and two translation drive components 13 respectively connected to the two positioning hole forming rods 12. The two positioning hole forming rods 12 horizontally inserted into the left and right folding side panel forming parts 2 can form positioning holes on both sides of the left and right folding side panel forming parts 2 during the injection molding of the turnover box. After the product is injection molded, the translation drive component 13 can drive the positioning hole forming rods 12 to move horizontally outward so that the positioning hole forming rods and the left and right folding side panels can be separated.

[0032] Specifically, the translation drive assembly 13 includes a core puller 14 fixedly connected to the positioning hole forming rod 12 and a translation drive 15 connected to the core puller 14. The mold body 1 is also provided with a limiting structure corresponding to the core puller 14, and the limiting structure includes two limiting pressure plates 16. The translation drive can drive the core puller to approach or move away from the turnover box forming cavity in the horizontal direction. The movement of the core puller can drive the positioning hole forming rod to move horizontally, and the two limiting pressure plates can limit the core puller.

[0033] Those skilled in the art should understand that the translation driver may be an oil cylinder, an air cylinder or a linear motor, etc.

[0034] Specifically, a multi-point glue injection component 17 is also provided in the mold body 1, which can directly inject glue into the left and right folding side panel forming parts 2, the front and rear folding side panel forming parts 3, the box bottom plate forming part 4 and the handle forming part 8. The multi-point glue injection component 17 includes an injection liquid diverter plate 18, and the injection liquid diverter plate 18 is connected to a plurality of injection tubes 19 respectively connected to the left and right folding side panel forming parts 2, the front and rear folding side panel forming parts 3, the box bottom plate forming part 4 and the handle forming part 8. Through the injection plate and the plurality of injection tubes 19, glue can be directly injected into the left and right folding side panel forming parts 2, the front and rear folding side panel forming parts 3, the box bottom plate forming part 4 and the handle forming part 8 at multiple points in a synchronous manner, thereby improving the glue injection efficiency.

[0035] Preferably, the multi-point glue injection assembly 17 further includes a heat preservation kit 20, the bottom of the injection tube 19 is inserted into the heat preservation kit 20, and the bottom of the heat preservation kit 20 connected to the front and rear folding side panel forming parts 3 has an inwardly concave rib forming groove 21. The heat preservation kit can maintain the temperature of the bottom end of the injection tube to prevent the temperature of the injection liquid at the bottom of the injection tube from dropping.

[0036] The working principle of the utility model is as follows: the turnover box molding cavity 5 composed of two left and right folding side panel molding parts 2, two front and rear folding side panel molding parts 3 and a box bottom panel molding part 4 can be used for one-time injection molding of the folding turnover box, and the handle molding structure 6 can directly mold the handles connected to the left and right folding side panels of the turnover box during injection molding, without the need for batch production and then assembly, which effectively reduces the production equipment cost and improves the production efficiency, and the side panel positioning hole molding mechanism 7 can mold positioning holes on both sides of the left and right folding side panels during injection molding of the turnover box;

[0037] The handle forming part 8 can directly form a handle during the injection molding of the turnover box, the three handle connecting belt forming parts 9 can form a handle connecting belt connecting the left and right folding side panels and the handle during the injection molding of the turnover box, the two finger hole forming parts can form two finger holes on the handle during the injection molding of the turnover box, and the handle reinforcement rib forming part 11 can form handle reinforcement ribs on the front and back sides of the handle and the handle connecting belt during the injection molding of the turnover box, thereby improving the overall strength of the handle and the handle connecting belt;

[0038] Two positioning hole forming rods 12 horizontally inserted into the left and right folding side panel forming parts 2 can form positioning holes on both sides of the left and right folding side panel forming parts 2 during the injection molding of the turnover box. After the product is injection molded, the translation drive assembly 13 can drive the positioning hole forming rod 12 to move horizontally outward so that the positioning hole forming rod and the left and right folding side panels can be separated. The translation drive can drive the core pulling seat to approach or move away from the turnover box molding cavity in the horizontal direction. The movement of the core pulling seat can drive the positioning hole forming rod to move horizontally, and the two limiting pressure plates can limit the core pulling seat.

[0039] Through the injection molding plate and a plurality of injection molding tubes 19, glue can be directly injected synchronously into multiple points including the left and right folding side panel forming parts 2, the front and rear folding side panel forming parts 3, the box bottom panel forming part 4 and the handle forming part 8, thereby improving the glue injection efficiency. The insulation kit can maintain the temperature of the bottom end of the injection molding tube to prevent the temperature of the injection liquid at the bottom of the injection molding tube from dropping.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0041] Although this article uses the mold main body 1, left and right folding side panel forming part 2, front and rear folding side panel forming part 3, box bottom plate forming part 4, turnover box forming cavity 5, handle forming structure 6, side panel positioning hole forming mechanism 7, handle forming part 8, handle connecting belt forming part 9, finger hole forming part 10, handle reinforcement rib forming part 11, positioning hole forming rod 12, translation drive assembly 13, core pulling seat 14, translation drive 15, limit pressure plate 16, multi-point glue feeding assembly 17, injection liquid diverter plate 18, injection tube 19, insulation kit 20, rib forming groove 21, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A foldable plastic turnover box injection mold, comprising a mold body (1), characterized in that: The mold body (1) is provided with a turnover box forming cavity (5) composed of two oppositely arranged left and right folding side panel forming parts (2), two oppositely arranged front and rear folding side panel forming parts (3) and a box bottom plate forming part (4); the left and right folding side panel forming parts (2) and the front and rear folding side panel forming parts (3) are all connected to the box bottom plate forming part (4); the mold body (1) is also provided with two handle forming structures (6) respectively connected to the left and right folding side panel forming parts (2); and the left and right sides of the mold body (1) are also symmetrically provided with side panel positioning hole forming mechanisms (7).

2. The foldable plastic turnover box injection mold according to claim 1 is characterized in that: The handle forming structure (6) comprises a handle forming part (8) arranged in the mold body (1), and three handle connecting belt forming parts (9) are arranged between the handle forming part (8) and the left and right folding side panel forming parts (2).

3. The foldable plastic turnover box injection mold according to claim 2 is characterized in that: The three handle connection belt forming parts (9) are connected to the two sides and the middle position of the left and right folding side panel forming parts (2) at one end away from the handle forming part (8).

4. The foldable plastic turnover box injection mold according to claim 2, characterized in that: Two finger hole forming parts (10) are also provided in the handle forming part (8).

5. The foldable plastic turnover box injection mold according to claim 2, characterized in that: The front and back sides of the handle forming part (8) are also provided with three handle reinforcing rib forming parts (11) respectively extending to the handle connecting band forming part (9).

6. The foldable plastic turnover box injection mold according to claim 1, characterized in that: The side panel positioning hole forming mechanism (7) comprises two positioning hole forming rods (12) horizontally inserted into the left and right folding side panel forming parts (2) and two translation drive components (13) respectively connected to the two positioning hole forming rods (12).

7. The foldable plastic turnover box injection mold according to claim 6, characterized in that: The translation drive assembly (13) includes a core pulling seat (14) fixedly connected to the positioning hole forming rod (12) and a translation drive (15) connected to the core pulling seat (14). The mold body (1) is also provided with a limiting structure corresponding to the core pulling seat (14), and the limiting structure includes two limiting pressure plates (16).

8. The foldable plastic turnover box injection mold according to claim 2, characterized in that: The mold body (1) is also provided with a multi-point glue injection component (17) capable of directly injecting glue into the left and right folding side panel forming parts (2), the front and rear folding side panel forming parts (3), the box bottom panel forming part (4) and the handle forming part (8).

9. The foldable plastic turnover box injection mold according to claim 8, characterized in that: The multi-point glue injection component (17) includes an injection liquid diverter plate (18), and the injection liquid diverter plate (18) is connected to a plurality of injection tubes (19) respectively connected to the left and right folding side panel forming parts (2), the front and rear folding side panel forming parts (3), the box bottom panel forming part (4) and the handle forming part (8).

10. The foldable plastic turnover box injection mold according to claim 9, characterized in that: The multi-point glue injection component (17) also includes an insulation kit (20), the bottom of the injection tube (19) is inserted into the insulation kit (20), and the bottom of the insulation kit (20) connected to the front and rear folding side panel forming parts (3) has an inwardly concave rib forming groove (21).

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