Bidirectional extrusion die and die pressing tray

Abstract

The utility model relates to a two-way extrusion mould and mould pressing tray, including: upper mould, lower mould, extrusion column, the upper mould is located the lower mould and moves up and down relative to the lower mould, the bottom of lower mould forms the foot pier through hole, the upper part of extrusion column is inserted in the foot pier through hole and is connected with the foot pier through hole in sliding mode, the extrusion column moves up and down relative to the lower mould. The upper die extrudes from top to bottom, the extrusion columns extrude raw materials from bottom to top, and the raw materials are simultaneously extruded from the upper direction and the lower direction to extrude and form foot piers of a tray, so that the density of the foot piers is larger, bubbles are fewer, the strength of the foot piers is higher, and the problem that the strength of the foot piers machined by an existing die is poor is solved.

Description

Technical Field

[0001] This utility model relates to the field of pallet molds, and in particular to a bidirectional extrusion mold and a molded pallet. Background Technology

[0002] In existing plant fiber molded pallets, only the upper mold presses the raw material into the lower mold from one direction during processing. This method can process the pallet panel well, but when processing the thicker legs, air bubbles may appear in the legs, making them less dense and resulting in poor leg strength. Utility Model Content

[0003] The present invention aims to solve the above problems by providing a bidirectional extrusion mold and a molding tray, which solves the problem of poor foot strength in existing mold processing.

[0004] A bidirectional extrusion die includes: an upper die, a lower die, and an extrusion column. The upper die is located above the lower die and moves up and down relative to the lower die. A foot support through hole is formed at the bottom of the lower die. The upper part of the extrusion column is inserted into the foot support through hole and slidably connected to the foot support through hole. The extrusion column moves up and down relative to the lower die.

[0005] Furthermore, it also includes a first mounting plate, to which the lower end of the extrusion column is fixedly connected.

[0006] Furthermore, it also includes a first driving device and a second driving device, wherein the first driving device drives the lower die to move up and down in the vertical direction, and the second driving device drives the extrusion column to move up and down in the vertical direction.

[0007] Furthermore, it also includes a connecting plate and a base, with the lower die fixedly connected to multiple connecting plates below, the connecting plates fixedly connected to the base below, and the extrusion column passing through the base.

[0008] Furthermore, it also includes a push rod, the lower mold has a push rod through hole, the upper part of the push rod is inserted into the push rod through hole and slidably connected to the push rod through hole, and the push rod moves up and down relative to the lower mold.

[0009] Furthermore, it also includes a second mounting plate and a third driving device. The lower end of the push rod is fixedly connected to the second mounting plate, the second mounting plate is located above the base, the extrusion column passes through the second mounting plate, and the third driving device drives the second mounting plate to move up and down.

[0010] Furthermore, the second mounting plate has a protruding plate that passes between the connecting plates, and the third driving device is connected to the protruding plate.

[0011] Furthermore, a first downward protrusion is formed at the bottom of the upper die, and a second upward protrusion is formed at the center of the top surface of the extrusion column.

[0012] Furthermore, a first groove that is recessed downwards is formed in the middle of the second protrusion.

[0013] A molded tray, wherein the molded tray is formed by extrusion using a bidirectional extrusion die as described in any one of the above claims.

[0014] This invention has the following advantages: the upper mold extrudes from top to bottom and the extrusion column extrudes from bottom to top, extruding the raw material from both directions simultaneously to shape the pallet foot block, resulting in a higher density and fewer air bubbles in the foot block, thus making the foot block stronger and solving the problem of poor foot block strength produced by existing molds. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0016] Figure 1 Top view of this utility model;

[0017] Figure 2 :exist Figure 1 Sectional view at point AA;

[0018] Figure 3 :exist Figure 2 Sectional view at point BB;

[0019] Figure 4 :exist Figure 2 Sectional view at CC;

[0020] Figure 5 One of the three-dimensional exploded views of this utility model;

[0021] Figure 6 : The second three-dimensional exploded view of this utility model;

[0022] Figure 7 One of the front sectional views of this utility model;

[0023] Figure 8 :exist Figure 7 A magnified view of a section at point D;

[0024] Figure 9 : Second front sectional view of this utility model;

[0025] Figure 10 :exist Figure 9A magnified view of a section at point E in the middle. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and examples:

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] like Figures 1 to 10 As shown, a bidirectional extrusion die includes: an upper die 1, a lower die 2, and an extrusion column 3. The upper die 1 is located above the lower die 2 and moves up and down relative to the lower die 2. The bottom of the lower die 2 has a foot support through hole 21. The upper part of the extrusion column 3 is inserted into the foot support through hole 21 and is slidably connected to the foot support through hole 21. The extrusion column 3 moves up and down relative to the lower die 2.

[0031] During extrusion molding, the extrusion column 3 blocks the lower end of the foot block through hole 21, and the raw material is placed on the lower die 2. Then the upper die 1 moves downward and the extrusion column 3 moves upward. The upper die 1 and the extrusion column 3 simultaneously extrude the raw material from both the upper and lower directions until the raw material is extruded into a tray.

[0032] Furthermore, it also includes a first mounting plate 31, and the lower end of the extrusion column 3 is fixedly connected to the first mounting plate 31. All the extrusion columns 3 are fixedly connected to the first mounting plate 31, which facilitates the synchronous movement of the extrusion columns 3 and ensures that the bottom surfaces of the feet of the extruded pallet are all on the same plane.

[0033] Furthermore, it also includes a first driving device and a second driving device, wherein the first driving device drives the lower die 2 to move up and down, and the second driving device drives the extrusion column 3 to move up and down.

[0034] Furthermore, it also includes a connecting plate 4 and a base 41. The lower mold 2 is fixedly connected to multiple connecting plates 4 below, and the connecting plates 4 are fixedly connected to the base 41 below. The extrusion column 3 passes through the base 41.

[0035] Furthermore, it also includes a push rod 5, the lower mold 2 has a push rod through hole 22, the upper part of the push rod 5 is inserted into the push rod through hole 22 and is slidably connected to the push rod through hole 22, and the push rod 5 moves up and down relative to the lower mold 2.

[0036] After the tray is formed, the ejector pin 5 moves upward, pushing the tray out of the lower mold 2 and demolding it. After the tray is removed from the lower mold 2, the ejector pin 5 returns to its original position.

[0037] Furthermore, it also includes a second mounting plate 51 and a third driving device. The lower end of the push rod 5 is fixedly connected to the second mounting plate 51, which is located above the base 41. The extrusion column 3 passes through the second mounting plate 51, and the third driving device drives the second mounting plate 51 to move up and down. The second mounting plate 51 is used to ensure that all the push rods 5 contact the tray synchronously, avoiding the situation where only some of the push rods 5 contact the tray, which would cause excessive pressure on the tray, resulting in changes and damage.

[0038] In an embodiment that does not use the ejector pin 5, the extrusion pin 3 can continue to move upward a certain distance after the tray is formed, ejecting the tray out of the lower mold 2.

[0039] Furthermore, the second mounting plate 51 is formed with a protruding plate 511, which passes through the connecting plates 4, and the third driving device is connected to the protruding plate 511.

[0040] Furthermore, it also includes a fixing post 42, the upper end of which is fixedly connected to the base 41.

[0041] Furthermore, the first drive device, the second drive device, and the third drive device are hydraulic cylinders.

[0042] Furthermore, such as Figure 7 and Figure 8 As shown, the bottom of the upper mold 1 has a downwardly protruding first protrusion 11, and the top surface of the extrusion column 3 has an upwardly protruding second protrusion 32. The first protrusion 11 and the second protrusion 32 help to save the amount of raw materials used, and at the same time, they can apply a horizontal force to the raw materials in the foot block through hole 21, making the foot block more compact.

[0043] Furthermore, such as Figure 9 and Figure 10 As shown, a downwardly recessed first groove 33 is formed in the middle of the second protrusion 32. The first groove 33 helps to save the amount of raw material used. At the same time, the presence of the first groove 33 allows the second protrusion 32 to protrude to a greater height, further reducing the amount of raw material used, while avoiding the lack of density during extrusion molding caused by excessively thick raw material.

[0044] A molded pallet, wherein the molded pallet is formed by extrusion using a bidirectional extrusion die as described in any one of the above claims. The pallet feet formed by simultaneous extrusion from both the top and bottom are made of a denser material, contain fewer air bubbles, and have higher structural strength.

[0045] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A two-way extrusion die characterized by, include: The upper die (1), lower die (2), and extrusion column (3) are provided. The upper die (1) is located above the lower die (2) and moves up and down relative to the lower die (2). The bottom of the lower die (2) has a foot support through hole (21). The upper part of the extrusion column (3) is inserted into the foot support through hole (21) and is slidably connected to the foot support through hole (21). The extrusion column (3) moves up and down relative to the lower die (2). The bottom of the upper mold (1) has a downward protrusion (11), and the top surface of the extrusion column (3) has an upward protrusion (32).

2. A two-way extrusion die according to claim 1, characterised in that: It also includes a first mounting plate (31), the lower end of which is fixedly connected to the first mounting plate (31).

3. A two-way extrusion die according to claim 1, characterized in that: It also includes a first driving device and a second driving device. The first driving device drives the lower die (2) to move up and down, and the second driving device drives the extrusion column (3) to move up and down.

4. A two-way extrusion die according to claim 3, characterised in that: It also includes a connecting plate (4) and a base (41). The lower mold (2) is fixedly connected to multiple connecting plates (4) below, and the connecting plates (4) are fixedly connected to the base (41) below. The extrusion column (3) passes through the base (41).

5. A two-way extrusion die according to claim 4, characterised in that: It also includes a push rod (5), the lower mold (2) has a push rod through hole (22), the upper part of the push rod (5) is inserted into the push rod through hole (22) and is slidably connected with the push rod through hole (22), and the push rod (5) moves up and down relative to the lower mold (2).

6. A two-way extrusion die according to claim 5, characterised in that: It also includes a second mounting plate (51) and a third driving device. The lower end of the top rod (5) is fixedly connected to the second mounting plate (51). The second mounting plate (51) is located above the base (41). The extrusion column (3) passes through the second mounting plate (51). The third driving device drives the second mounting plate (51) to move up and down.

7. A two-way extrusion die according to claim 6, characterised in that: The second mounting plate (51) has a protruding plate (511) that passes between the connecting plates (4), and the third driving device is connected to the protruding plate (511).

8. A two-way extrusion die as claimed in claim 1, wherein: The second protrusion (32) has a downwardly recessed first groove (33) formed in the middle.

9. A molded tray characterized by: The molded tray is formed by extrusion using a bidirectional extrusion die as described in any one of claims 1 to 8.

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