Logistics turnover box injection mold with four-corner internal shrinkage type core pulling mechanism

Abstract

The utility model provides a logistics turnover box injection mold with a four-corner internal shrinkage type core pulling mechanism, and belongs to the technical field of molds. The mold comprises an upper mold plate and a lower mold plate, an inwards-sunken cavity is formed in the bottom of the upper mold plate, the lower mold plate is located on the lower side of the upper mold plate, a jacking gap is formed between the upper mold plate and the lower mold plate, a rectangular insert inserted into the cavity is arranged at the top of the upper mold plate, and the rectangular insert is inserted into the cavity. And a forming cavity is arranged between the top of the rectangular insert and the cavity. The ejection mechanism is arranged in the jacking gap between the upper mold plate and the lower mold plate, and compared with the mode that an ejection mechanism of a traditional turnover box mold is arranged below the lower mold plate, the overall height of the mold is greatly reduced; the translation core-pulling assembly can drive the translation insert to move in the direction away from the forming cavity, so that the horizontal insert and the product can be separated, and automatic core pulling before the product is ejected is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an injection mold for a logistics turnover box with a four-corner retractable core-pulling mechanism. Background Art

[0002] Logistics turnover boxes are generally made by injection molding. The ejection mechanism of the existing turnover box mold is set below the lower mold plate, and the product is ejected by a combination of a top plate and a push rod, but this results in a relatively high height of the mold.

[0003] For example, a Chinese patent discloses a mold structure for producing turnover boxes [application number: 201920395203.3], which includes a fixed mold, a slider and a movable mold. The fixed mold and the movable mold are connected by a guide column, the slider is between the fixed mold and the movable mold, and a spring is installed between the slider and the movable mold. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a logistics turnover box injection mold with a four-corner retractable core pulling mechanism.

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

[0006] A logistics turnover box injection mold with a four-corner retractable core-pulling mechanism, comprising an upper template and a lower template, wherein the bottom of the upper template is provided with an inwardly recessed cavity, the lower template is located at the lower side of the upper template and a lifting gap is provided between the upper template and the lower template, the top of the upper template is provided with a rectangular insert inserted into the cavity, a molding cavity is provided between the top of the rectangular insert and the cavity, the four sides of the rectangular insert are provided with translation inserts, the top of the translation insert is fixedly connected with a horizontal insert horizontally inserted into the molding cavity, the lower template is also provided with four translation core-pulling assemblies respectively connected to the translation inserts, and an ejection mechanism is also provided at the lifting gap.

[0007] In the above-mentioned logistics turnover box injection mold with a four-corner retractable core pulling mechanism, the ejection mechanism includes a top plate with a rectangular ring cross-section, the rectangular insert is embedded in the middle position of the top plate, and a connecting plate is respectively provided on the four corners of the rectangular insert. The lower mold plate is also provided with four lifting components connected to the connecting plates.

[0008] In the above-mentioned logistics turnover box injection mold with a four-corner retractable core pulling mechanism, the lifting component includes a lifting driver fixedly connected to the connecting plate, and the output shaft end of the lifting driver passes through the connecting plate and is fixedly connected to the lower template.

[0009] In the above-mentioned logistics turnover box injection mold with a four-corner retractable core-pulling mechanism, four limiting columns are also fixedly connected to the four corners of the lower template, and the tops of the limiting columns are inserted into the upper template and slidably cooperate with the upper template.

[0010] In the above-mentioned logistics turnover box injection mold with a four-corner retractable core-pulling mechanism, a sliding sleeve is fixedly connected to the connecting plate, and the sliding sleeve is mounted on the limiting column and slidably cooperates with the limiting column.

[0011] In the above-mentioned logistics turnover box injection mold with a four-corner retractable core pulling mechanism, the translation core pulling assembly includes a translation driver that is horizontally arranged and fixedly connected to the translation insert, and the output shaft end of the translation driver is fixedly connected to the lower template.

[0012] In the above-mentioned logistics turnover box injection mold with a four-corner retractable core-pulling mechanism, an insert limiting structure is also provided between the translation insert and the lower mold plate.

[0013] In the above-mentioned logistics turnover box injection mold with a four-corner retractable core pulling mechanism, the insert limiting structure includes two limiting seats horizontally fixed on the lower mold plate, the limiting seats are provided with horizontally arranged limiting slide grooves, and the bottom of the translation insert is fixedly connected with a limiting sliding block inserted into the limiting slide groove.

[0014] In the above-mentioned logistics turnover box injection mold with a four-corner retractable core-pulling mechanism, the cross-sections of the limiting slide groove and the limiting slider are both T-shaped.

[0015] In the above-mentioned logistics turnover box injection mold with a four-corner retractable core-pulling mechanism, the horizontal insert is detachably fixed to the translation insert by a plurality of bolts.

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

[0017] 1. The ejection mechanism is set in the lifting gap between the upper mold plate and the lower mold plate. Compared with the ejection mechanism of the traditional turnover box mold set below the lower mold plate, the overall height of the mold is greatly reduced. After the product is injection molded, the translation core pulling assembly can drive the translation insert to move away from the molding cavity, so that the horizontal insert and the product can be separated to realize automatic core pulling before the product is ejected.

[0018] 2. The synchronous action of the four lifting components can drive the top plate to rise and fall in the vertical direction through the connecting plate, so as to eject the product. The action of the lifting driver can drive the connecting plate to rise and fall in the vertical direction. The limit column can position the upper template. The sliding sleeve on the connecting plate cooperates with the limit column to limit and guide the connecting plate when it moves.

[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 partial structural schematic diagram of the utility model;

[0023] Figure 4 It is a structural diagram of the lower template.

[0024] In the figure, there are an upper template 1, a lower template 2, a rectangular insert 3, a translation insert 4, a horizontal insert 5, a translation core pulling assembly 6, an ejection mechanism 7, a top plate 8, a connecting plate 9, a lifting drive 10, a limit column 11, a sliding sleeve 12, a translation drive 13, a limit seat 14, a limit slide groove 15, and a limit slider 16. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 4 As shown, a logistics turnover box injection mold with a four-corner retractable core-pulling mechanism includes an upper template 1 and a lower template 2. The upper template 1 is provided with an inwardly recessed cavity at the bottom, the lower template 2 is located at the lower side of the upper template 1 and a lifting gap is provided between the upper template 1 and the lower template 2. The top of the upper template 1 is provided with a rectangular insert 3 inserted into the cavity, a molding cavity is provided between the top of the rectangular insert 3 and the cavity, the four sides of the rectangular insert 3 are provided with translation inserts 4, the top of the translation insert 4 is fixedly connected with a horizontal insert 5 horizontally inserted into the molding cavity, the lower template 2 is also provided with four translation core-pulling assemblies 6 respectively connected to the translation insert 4, and an ejection mechanism 7 is also provided at the lifting gap.

[0026] In the utility model, the ejection mechanism 7 is arranged in the lifting gap between the upper template 1 and the lower template 2. Compared with the ejection mechanism of the traditional turnover box mold being arranged below the lower template, the overall height of the mold is greatly reduced. After the product is injection molded, the translational core pulling assembly 6 can drive the translational insert to move away from the molding cavity so that the horizontal insert 5 and the product can be separated to realize automatic core pulling before the product is ejected.

[0027] Specifically, the ejection mechanism 7 includes a top plate 8 with a rectangular ring-shaped cross section, the rectangular insert 3 is embedded in the middle of the top plate 8, and a connecting plate 9 is provided at each of the four corners of the rectangular insert 3. The lower mold plate 2 is also provided with four lifting components connected to the connecting plate 9. The four lifting components can move synchronously to drive the top plate to rise and fall in the vertical direction through the connecting plate so as to eject the product.

[0028] Specifically, the lifting assembly includes a lifting driver 10 fixedly connected to the connecting plate 9, and the output shaft end of the lifting driver 10 passes through the connecting plate 9 and is fixedly connected to the lower template 2. The lifting driver can drive the connecting plate to rise and fall in the vertical direction.

[0029] Those skilled in the art should understand that the lifting drive may be an oil cylinder, an air cylinder or a linear motor, etc.

[0030] Specifically, four limiting columns 11 are fixedly connected at the four corners of the lower template 2, the tops of the limiting columns 11 are inserted into the upper template 1 and slide with the upper template 1, and the connecting plate 9 is fixedly connected with a sliding sleeve 12, which is sleeved on the limiting columns 11 and slides with the limiting columns 11. The limiting columns can position the upper template, and the sliding sleeve on the connecting plate cooperates with the limiting columns to limit and guide the connecting plate when it moves.

[0031] Specifically, the translation core pulling assembly 6 includes a translation driver 13 which is horizontally arranged and fixedly connected to the translation insert 4, and the output shaft end of the translation driver 13 is fixedly connected to the lower mold plate 2. The translation driver can drive the translation insert to approach or move away from the molding cavity in the horizontal direction.

[0032] Those skilled in the art should understand that the translation driver may be an oil cylinder, an air cylinder or a linear motor, etc.

[0033] Preferably, an insert limiting structure is further provided between the translation insert 4 and the lower template 2. The insert limiting structure can limit the translation insert when the translation insert moves.

[0034] Specifically, the insert limiting structure includes two limiting seats 14 horizontally fixed on the lower template 2, the limiting seats 14 are provided with horizontal limiting slide grooves 15, the bottom of the translation insert 4 is fixedly connected with a limiting slider 16 inserted into the limiting slide grooves 15, and the limiting slide grooves 15 and the limiting slider 16 are both T-shaped in cross section. The limiting slider 16 with a T-shaped cross section cooperates with the limiting slide grooves 15 on the limiting seats 14 to limit the translation insert when the translation insert moves.

[0035] Preferably, the horizontal insert 5 is detachably fixed to the translation insert 4 by a plurality of bolts, so that the horizontal insert can be easily disassembled and replaced.

[0036] The working principle of the utility model is as follows: the ejection mechanism 7 is arranged in the lifting gap between the upper mold plate 1 and the lower mold plate 2. Compared with the ejection mechanism of the traditional turnover box mold being arranged below the lower mold plate, the overall height of the mold is greatly reduced. After the product is injection molded, the translation core pulling assembly 6 can drive the translation insert to move away from the molding cavity so that the horizontal insert 5 and the product can be separated to realize automatic core pulling before the product is ejected;

[0037] The synchronous action of the four lifting components can drive the top plate to rise and fall in the vertical direction through the connecting plate so as to eject the product. The action of the lifting driver can drive the connecting plate to rise and fall in the vertical direction. The limit column can position the upper template. The sliding sleeve on the connecting plate cooperates with the limit column to limit and guide the connecting plate when the connecting plate moves.

[0038] The translation driver can drive the translation insert to approach or move away from the molding cavity in the horizontal direction. The insert limiting structure can limit the translation insert when the translation insert moves. The limiting slider 16 with a T-shaped cross-section cooperates with the limiting groove 15 on the limiting seat 14 to limit the translation insert when the translation insert moves.

[0039] 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.

[0040] Although this article uses the upper template 1, lower template 2, rectangular insert 3, translation insert 4, horizontal insert 5, translation core pulling assembly 6, ejection mechanism 7, top plate 8, connecting plate 9, lifting drive 10, limit column 11, sliding sleeve 12, translation drive 13, limit seat 14, limit slide groove 15, limit slider 16 and the like 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 logistics turnover box injection mold with a four-corner retractable core-pulling mechanism, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: The bottom of the upper template (1) is provided with an inwardly recessed cavity, the lower template (2) is located at the lower side of the upper template (1) and a lifting gap is provided between the upper template (1) and the lower template (2), the top of the upper template (1) is provided with a rectangular insert (3) inserted into the cavity, a molding cavity is provided between the top of the rectangular insert (3) and the cavity, the four sides of the rectangular insert (3) are provided with translation inserts (4), the top of the translation insert (4) is fixedly connected with a horizontal insert (5) horizontally inserted into the molding cavity, the lower template (2) is also provided with four translation core pulling assemblies (6) respectively connected to the translation inserts (4), and an ejection mechanism (7) is also provided at the lifting gap.

2. The injection mold for a logistics turnover box with a four-corner retractable core-pulling mechanism according to claim 1, characterized in that: The ejection mechanism (7) comprises a top plate (8) having a rectangular ring-shaped cross section, the rectangular insert (3) is embedded in the middle of the top plate (8), a connecting plate (9) is respectively provided on the four corners of the rectangular insert (3), and the lower template (2) is also provided with four lifting components connected to the connecting plates (9).

3. The injection mold for a logistics turnover box with a four-corner retractable core-pulling mechanism according to claim 2, characterized in that: The lifting assembly comprises a lifting driver (10) fixedly connected to the connecting plate (9); the output shaft end of the lifting driver (10) passes through the connecting plate (9) and is fixedly connected to the lower template (2).

4. The injection mold for a logistics turnover box with a four-corner retractable core-pulling mechanism according to claim 3, characterized in that: Four limiting columns (11) are fixedly connected at the four corners of the lower template (2), and the tops of the limiting columns (11) are inserted into the upper template (1) and slidably cooperate with the upper template (1).

5. The injection mold for a logistics turnover box with a four-corner retractable core-pulling mechanism according to claim 4, characterized in that: A sliding sleeve (12) is fixedly connected to the connecting plate (9), and the sliding sleeve (12) is sleeved on the limiting column (11) and slidably cooperates with the limiting column (11).

6. The injection mold for a logistics turnover box with a four-corner retractable core-pulling mechanism according to claim 1, characterized in that: The translation core pulling assembly (6) comprises a translation driver (13) which is arranged horizontally and fixedly connected to the translation insert (4); the output shaft end of the translation driver (13) is fixedly connected to the lower template (2).

7. The injection mold for a logistics turnover box with a four-corner retractable core-pulling mechanism according to claim 6, characterized in that: An insert limiting structure is also provided between the translation insert (4) and the lower template (2).

8. The injection mold for a logistics turnover box with a four-corner retractable core-pulling mechanism according to claim 7, characterized in that: The insert limiting structure comprises two limiting seats (14) horizontally fixed on the lower template (2), the limiting seats (14) are provided with horizontally arranged limiting slide grooves (15), and the bottom of the translation insert (4) is fixedly connected with a limiting sliding block (16) inserted into the limiting slide groove (15).

9. The logistics turnover box injection mold with a four-corner retractable core-pulling mechanism according to claim 8, characterized in that: The cross sections of the limiting sliding groove (15) and the limiting sliding block (16) are both T-shaped.

10. The logistics turnover box injection mold with a four-corner retractable core-pulling mechanism according to claim 1, characterized in that: The horizontal insert (5) is detachably fixed on the translation insert (4) by means of a plurality of bolts.

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