Integral logistics pallet box injection mold with insert interchanging mechanism

Abstract

The utility model provides an integral logistics pallet box injection mold with an insert exchange mechanism, and belongs to the technical field of molds. The mold comprises an upper mold plate and a lower mold plate, an insert interchanging structure is arranged between the upper mold plate and the lower mold plate, and the insert interchanging structure is formed by combining four side inserts which are encircled into a rectangle. The four side inserts in the insert interchange structure are movably connected with the upper mold plate and the lower mold plate and can be interchanged with the other side inserts, so that logistics pallet box products with grooves in different shapes in side plates can be produced under the condition that the upper mold plate and the lower mold plate are not replaced; when the upper mold plate and the middle insert move upwards, downward pushing force can be applied to a product through the built-in upper demolding mechanism, so that the product can be separated from the upper mold plate, and when the upper mold plate moves upwards, the side core pulling mechanism can drive the side insert to move horizontally in the direction away from the middle insert, so that automatic core pulling of the side insert is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an integral injection mold for a logistics pallet box with an insert interchange mechanism. Background Art

[0002] Plastic logistics pallet boxes are generally injection molded through molds. In the prior art, after injection molding of the logistics pallet box, in the demolding process, the phenomenon that the logistics pallet box product adheres to the upper template often occurs, resulting in smooth demolding of the product.

[0003] For example, the Chinese patent discloses an injection molding mold and method for an integrated pallet box door panel [Application No.: 202311789265.X]. By arranging a plurality of inserts, and at least one insert is provided with an installation position for placing a steel plate. A plurality of bosses are arranged at intervals on the installation position, and each boss is provided with a positioning pin. The steel plate is placed on the installation position by a robot, so that the plurality of positioning pins are respectively inserted into a plurality of positioning holes of the steel plate, and the steel plate is in contact with the bosses, so that the steel plate is fixed on the insert. After the upper mold base and the lower mold base are clamped, a cavity structure is formed between the upper mold base and the plurality of inserts. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an integral injection mold for a logistics pallet box with an insert interchange mechanism for the above problems.

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

[0006] An integral injection mold for a logistics pallet box with an insert interchange mechanism includes an upper template and a lower template. An insert interchange structure is arranged between the upper template and the lower template. The insert interchange structure is formed by combining four side inserts surrounded in a rectangle. The side inserts are movably connected to both the upper template and the lower template. A middle insert inserted into the chamber surrounded by the four side inserts is fixedly connected to the bottom of the upper template. An internal upper demolding mechanism is further arranged on the middle insert, and a side core-pulling mechanism capable of driving the four side inserts to translate synchronously is arranged on the upper template.

[0007] In the above integral injection mold for a logistics pallet box with an insert interchange mechanism, the internal upper demolding mechanism includes a bottom insert embedded at the bottom of the middle insert and slidably matched with the middle insert. A drive installation chamber is further arranged in the middle insert. A lifting drive is vertically arranged in the drive installation chamber. The top end of the lifting drive is fixedly connected to the upper template and the bottom end is fixedly connected to the middle insert. The output shaft of the lifting drive is arranged downward and vertically penetrates the middle insert and is fixedly connected to the bottom insert.

[0008] In the above-mentioned integral logistics pallet box injection mold with an insert interchange mechanism, a limiting structure is further provided on the bottom insert.

[0009] In the above-mentioned integral logistics pallet box injection mold with an insert interchange mechanism, the limiting structure includes a number of limiting rods fixed to the top end of the bottom insert, and the limiting rods are inserted into the intermediate insert and are in sliding fit with the intermediate insert.

[0010] In the above-mentioned integral logistics pallet box injection mold with an insert interchange mechanism, the side core-pulling mechanism includes four vertical rectangular sliding seats fixed to the bottom of the lower template, and the four vertical rectangular sliding seats are respectively arranged at the four corners of the insert interchange structure. Oblique guiding structures are provided on the two side walls of the vertical rectangular sliding seat facing the side insert.

[0011] In the above-mentioned integral logistics pallet box injection mold with an insert interchange mechanism, the oblique guiding structure includes an oblique guiding block obliquely fixed to the vertical rectangular sliding seat. The distance between the oblique guiding block and the intermediate insert gradually increases from top to bottom. The oblique guiding block is inserted into the guiding chute on the side of the side insert, and the two oblique guiding blocks inserted into the same side insert are arranged in parallel.

[0012] In the above-mentioned integral logistics pallet box injection mold with an insert interchange mechanism, the oblique guiding block is detachably connected to the oblique guiding block by screws.

[0013] In the above-mentioned integral logistics pallet box injection mold with an insert interchange mechanism, a vertical limiting slide bar is further provided on the lower template. The top end of the vertical limiting slide bar is inserted into the vertical rectangular sliding seat and is in sliding fit with the vertical rectangular sliding seat.

[0014] In the above-mentioned integral logistics pallet box injection mold with an insert interchange mechanism, the moving directions of two adjacent side inserts are perpendicular to each other.

[0015] In the above-mentioned integral logistics pallet box injection mold with an insert interchange mechanism, side inserts are further provided on the inner end faces of the side inserts, and the side inserts are fixed to the side inserts by a number of screws.

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

[0017] 1. The four side inserts within the insert interchange structure are movably connected to the upper template and the lower template and can be interchanged with the remaining side inserts. Thus, it is possible to produce logistics pallet box products with different-shaped grooves on the side plates without replacing the upper template and the lower template. After the product is injection-molded, while the upper template and the intermediate insert move upward, a downward thrust can be applied to the product through the built-in upper demolding mechanism, enabling the product to be separated from the upper template. The side core-pulling mechanism can drive the side inserts to translate away from the intermediate insert while the upper template moves upward, thereby realizing the automatic core-pulling of the side inserts.

[0018] 2. When the upper template and the intermediate insert move upward, the lifting drive can drive the bottom insert to move vertically downward, thereby applying a vertically downward thrust to the product to separate the product from the upper template.

[0019] 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

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

[0021] Figure 2 is a cross-sectional view of the present utility model;

[0022] Figure 3 is a schematic diagram of the internal structure of the present utility model;

[0023] Figure 4 is a schematic diagram of the partial structure of the present utility model.

[0024] In the figure, upper template 1, lower template 2, insert interchange structure 3, side insert 4, intermediate insert 5, built-in upper demolding mechanism 6, side core-pulling mechanism 7, bottom insert 8, drive installation chamber 9, lifting drive 10, limit rod 11, vertical rectangular sliding seat 12, inclined guide block 13, guide chute 14, vertical limit sliding rod 15, side insert 16. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] As Figures 1-4 shown, an integral logistics pallet box injection mold with an insert interchange mechanism includes an upper template 1 and a lower template 2. An insert interchange structure 3 is provided between the upper template 1 and the lower template 2. The insert interchange structure 3 is formed by combining four side inserts 4 that enclose a rectangle. The side inserts 4 are movably connected to both the upper template 1 and the lower template 2. An intermediate insert 5 inserted into the chamber formed by the four side inserts 4 is fixedly connected to the bottom of the upper template 1. A built-in upper demolding mechanism 6 is further provided on the intermediate insert 5. A side core-pulling mechanism 7 capable of driving the four side inserts 4 to translate synchronously is also provided on the upper template 1.

[0026] In the present utility model, the four side inserts 4 in the insert interchange structure 3 are movably connected to the upper template and the lower template and can be interchanged with the remaining side inserts, so that it is possible to produce a logistics pallet box product with different-shaped grooves on the side plate without replacing the upper template and the lower template. After the product is injection-molded, when the upper template and the intermediate insert move upward, the built-in upper demolding mechanism 6 can apply a downward thrust to the product so that the product can be separated from the upper template. The side core-pulling mechanism 7 can drive the side insert to translate away from the intermediate insert while the upper template moves upward, thereby realizing the automatic core-pulling of the side insert.

[0027] Specifically, the built-in upper demolding mechanism 6 includes a bottom insert 8 embedded at the bottom of the intermediate insert 5 and slidably engaged with the intermediate insert 5. A driver installation chamber 9 is further provided in the intermediate insert 5. A lifting driver 10 is vertically arranged in the driver installation chamber 9. The top end of the lifting driver 10 is fixedly connected to the upper template 1 and the bottom end is fixedly connected to the intermediate insert 5. The output shaft of the lifting driver 10 is arranged downward and vertically penetrates the intermediate insert 5 and is fixedly connected to the bottom insert 8. When the upper template and the intermediate insert move upward, the lifting driver 10 can drive the bottom insert 8 to move vertically downward so as to apply a vertically downward thrust to the product to separate the product from the upper template.

[0028] Those skilled in the art should understand that the lifting driver can be an oil cylinder, a cylinder or a linear motor, etc.

[0029] Preferably, a limiting structure is further provided on the bottom insert 8. The limiting structure includes a plurality of limiting rods 11 fixed to the top end of the bottom insert 8. The limiting rods 11 are inserted into the intermediate insert 5 and slidably engaged with the intermediate insert 5. The limiting rods cooperate with the intermediate insert to limit the bottom insert when the bottom insert moves.

[0030] Specifically, the side core-pulling mechanism 7 includes four vertical rectangular sliding seats 12 fixed to the bottom of the lower template 2. The four vertical rectangular sliding seats 12 are respectively arranged at the four corners of the insert interchange structure 3. Oblique guiding structures are provided on the two side walls of the vertical rectangular sliding seats 12 facing the side insert 4. When the upper template moves upward, it can drive the vertical rectangular sliding seats 12 to move vertically upward. The upward movement of the vertical rectangular sliding seats 12 can drive the side insert to translate away from the intermediate insert through the oblique guiding structure, thereby realizing the automatic core-pulling of the side insert.

[0031] Specifically, the inclined guiding structure includes an inclined guiding block 13 that is fixedly inclined on the vertical rectangular sliding seat 12. The distance between the inclined guiding block 13 and the intermediate insert 5 gradually increases from top to bottom. The inclined guiding block 13 is inserted into the guiding chute 14 on the side of the side insert 4. Two inclined guiding blocks 13 inserted into the same side insert 4 are arranged in parallel. When the vertical rectangular sliding seat 12 moves vertically upward, it can drive the inclined guiding block 13 to move vertically upward. The inclined guiding block cooperates with the guiding chute to drive the side insert to translate away from the intermediate insert.

[0032] Preferably, the inclined guiding block 13 is detachably connected to the inclined guiding block 13 by screws, which facilitates disassembly.

[0033] Specifically, a vertical limiting slide bar 15 is further provided on the lower template 2. The top end of the vertical limiting slide bar 15 is inserted into the vertical rectangular sliding seat 12 and is slidably matched with the vertical rectangular sliding seat 12. The vertical limiting slide bar 15 can limit the vertical rectangular sliding seat 12 when the vertical rectangular sliding seat 12 moves.

[0034] Specifically, the moving directions of two adjacent side inserts 4 are perpendicular to each other.

[0035] Preferably, a side insert 16 is further provided on the inner end surface of the side insert 4. The side insert 16 is fixed on the side insert 4 by a plurality of screws. Providing a detachable side insert 16 on the side insert 4 can reduce the maintenance cost when the inner surface of the side insert is partially damaged.

[0036] The working principle of the present utility model is as follows: The four side inserts 4 in the insert interchange structure 3 are movably connected to the upper template and the lower template and can be interchanged with the remaining side inserts. Thus, it is possible to produce logistics pallet box products with different-shaped grooves on the side plates without replacing the upper template and the lower template. After the product is injection-molded, when the upper template and the intermediate insert move upward, the built-in upper demolding mechanism 6 can apply a downward thrust to the product to enable the product to be separated from the upper template. The side core-pulling mechanism 7 can drive the side insert to translate away from the intermediate insert while the upper template moves upward, thereby realizing the automatic core-pulling of the side insert;

[0037] When the upper template and the intermediate insert move upward, the lifting driver 10 can drive the bottom insert 8 to move vertically downward to apply a vertically downward thrust to the product to enable the product to be separated from the upper template. The limiting rod cooperates with the intermediate insert to limit the bottom insert when the bottom insert moves;

[0038] When the upper template moves upward, it can drive the vertical rectangular slide 12 to move vertically upward. When the vertical rectangular slide 12 moves upward, it can drive the side insert block to translate away from the middle insert block through the inclined guiding structure, thus realizing the automatic core pulling of the side insert block. When the vertical rectangular slide 12 moves vertically upward, it can drive the inclined guiding block 13 to move vertically upward. The inclined guiding block cooperates with the guiding chute to drive the side insert block to translate away from the middle insert block. The vertical limiting slide rod 15 can limit the vertical rectangular slide 12 when the vertical rectangular slide 12 moves. Setting the detachable side insert 16 on the side insert block 4 can reduce the maintenance cost when the inner surface of the side insert block is partially damaged.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to substitute, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0040] Although terms such as upper template 1, lower template 2, insert block interchange structure 3, side insert block 4, middle insert block 5, built-in upper demolding mechanism 6, side core pulling mechanism 7, bottom insert 8, drive installation chamber 9, lifting drive 10, limiting rod 11, vertical rectangular slide 12, inclined guiding block 13, guiding chute 14, vertical limiting slide rod 15, side insert 16, etc. are used more frequently herein, using these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. An integral injection mold for a logistics pallet box with an insert interchange mechanism, comprising an upper template (1) and a lower template (2), characterized in that, An insert exchange structure (3) is provided between the upper template (1) and the lower template (2). The insert exchange structure (3) is formed by combining four side inserts (4) that enclose to form a rectangle. The side inserts (4) are movably connected to both the upper template (1) and the lower template (2). A middle insert (5) is fixedly connected to the bottom of the upper template (1) and inserted into the chamber formed by the four side inserts (4). An internal upper demolding mechanism (6) is further provided on the middle insert (5), and a side core-pulling mechanism (7) capable of driving the four side inserts (4) to translate synchronously is provided on the upper template (1).

2. The integral logistics pallet box injection mold with an insert interchange mechanism according to claim 1, characterized in that, The internal upper demolding mechanism (6) includes a bottom insert (8) embedded in the bottom of the middle insert (5) and slidably matched with the middle insert (5). A driver installation chamber (9) is further provided in the middle insert (5). A lifting driver (10) is vertically arranged in the driver installation chamber (9). The top end of the lifting driver (10) is fixedly connected to the upper template (1) and the bottom end is fixedly connected to the middle insert (5). The output shaft of the lifting driver (10) is arranged downward and vertically penetrates the middle insert (5) and is fixedly connected to the bottom insert (8).

3. The integral injection mold for a logistics pallet box with an insert interchange mechanism according to claim 2, characterized in that, A limiting structure is further provided on the bottom insert (8).

4. The integral logistics pallet box injection mold with an insert interchange mechanism according to claim 3, characterized in that The limiting structure includes a number of limiting rods (11) fixed to the top end of the bottom insert (8). The limiting rods (11) are inserted into the middle insert (5) and slidably matched with the middle insert (5).

5. The integral logistics pallet box injection mold with an insert interchange mechanism according to claim 1, characterized in that, The side core-pulling mechanism (7) includes four vertical rectangular sliding seats (12) fixed to the bottom of the lower template (2). The four vertical rectangular sliding seats (12) are respectively arranged at the four corners of the insert exchange structure (3). Oblique guiding structures are provided on the two side walls of the vertical rectangular sliding seats (12) facing the side inserts (4).

6. The integral logistics pallet box injection mold with an insert interchange mechanism according to claim 5, characterized in that, The oblique guiding structure includes an oblique guiding block (13) fixedly arranged on the vertical rectangular sliding seat (12). The distance between the oblique guiding block (13) and the middle insert (5) gradually increases from top to bottom. The oblique guiding block (13) is inserted into the guiding chute (14) on the side of the side insert (4). The two oblique guiding blocks (13) inserted into the same side insert (4) are arranged in parallel.

7. The integral logistics pallet box injection mold with an insert interchange mechanism according to claim 6, characterized in that, The oblique guiding block (13) is detachably connected to the oblique guiding block (13) by a screw.

8. The integral logistics pallet box injection mold with an insert interchange mechanism according to claim 5, characterized in that A vertical limiting slide bar (15) is further provided on the lower template (2). The top end of the vertical limiting slide bar (15) is inserted into the vertical rectangular sliding seat (12) and slidably matched with the vertical rectangular sliding seat (12).

9. The integral logistics pallet box injection mold with an insert interchange mechanism according to claim 1, characterized in that, The moving directions of two adjacent side inserts (4) are perpendicular to each other.

10. The integral logistics pallet box injection mold with an insert interchange mechanism according to claim 1, characterized in that, Side inserts (16) are further provided on the inner end faces of the side inserts (4). The side inserts (16) are fixed to the side inserts (4) by a number of screws.

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