Pressing die

Abstract

The utility model relates to the technical field of foam packaging box production, in particular to a pressing die which comprises a bottom plate, supporting columns are fixed to the four corners of the top of the bottom plate, a top plate is fixed to the tops of the supporting columns, a pressing die assembly is arranged on the top plate, and a plurality of stand columns are fixed to the top of the bottom plate. The same fixed mold frame is fixedly mounted at the tops of the stand columns, a mounting groove is formed in the middle of the top of the fixed mold frame, an inner mold frame is fixedly mounted on the inner wall of the mounting groove, a material ejecting assembly is arranged at the bottom of the inner mold frame, and a water storage tank is fixedly mounted at one end of the fixed mold frame. According to the utility model, the automatic demolding performance is realized, cold water is blown between the fixed mold frame and the inner mold frame, and heat generated in the mold is taken away in time through the flowing cold water, so that the whole device is provided with a better cooling structure, the molding speed of a foam packaging box in the mold is accelerated, and the demolding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foam packaging box production, in particular to a pressing die. Background Art

[0002] Foam packaging is a common packaging material, which is widely used for packaging fragile items such as electronic products, glass products, ceramic products, etc. The production process of foam packaging mainly includes raw material preparation, foaming, molding, cutting, processing and other steps. In the molding process of foam packaging, hot pressing mold molding is a common molding method, that is, placing the foam material in a preheated mold, and through heating and pressure, it solidifies and solidifies in a short time.

[0003] After searching, a foam box demoulding device with patent publication number CN219583450U is found, which includes a base, a mold is fixedly installed on the upper top wall of the base, a support plate is symmetrically fixedly connected to the upper top wall of the base, the upper side walls of the two support plates are commonly fixedly connected to a mounting plate, the lower side wall of the mounting plate is fixedly connected to a hydraulic cylinder, the end of the hydraulic cylinder away from the mounting plate is fixedly connected to an injection mold plate, an injection hole is opened on the upper side wall of the injection mold plate, the inner bottom wall of the base is fixedly connected to a motor, the driving end of the motor is fixedly connected to a screw rod rotatably connected to the left inner wall of the base, and the outer wall of the screw rod is threadedly connected to a trapezoidal block slidably connected to the inner bottom wall of the base. In the process of implementing the above scheme, it was found that the following problems in the prior art have not been well solved: when the foam packaging box pressing mold in the prior art is in use, it mostly adopts natural cooling or water cooling to perform temperature reduction and molding processing. The natural cooling speed is slow, and the cold water does not flow during water cooling, so that the heat cannot be taken away in time, and there is no good cooling and cooling structure inside, which makes the foam packaging box forming speed in the mold slow, and it is easy to produce mold sticking, which affects the subsequent demolding effect. Therefore, it is urgent to design a pressing mold to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a pressing die to solve the problems raised in the above background technology.

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

[0006] A pressing mold comprises a base plate, support columns are fixed to the four corners of the top of the base plate, and the same top plate is fixed to the top of the support columns, a pressing mold assembly is arranged on the top plate, a plurality of columns are fixed to the top of the base plate, and the same fixed mold frame is fixedly installed on the top of the columns, a mounting groove is opened in the middle position of the top of the fixed mold frame, an inner mold frame is fixedly installed on the inner wall of the mounting groove, a top material assembly is arranged at the bottom of the inner mold frame, a water tank is fixedly installed at one end of the fixed mold frame, and a refrigeration device is fixedly installed at one end of the water tank, a conducting port communicating with the water tank is opened at the bottom of one end of the fixed mold frame, circulating pipes are fixed between the other end of the fixed mold frame and the inside of the water tank on both sides, and a water pressure assembly is arranged on the top of the water tank.

[0007] Furthermore, the die assembly includes a second hydraulic cylinder fixedly mounted on the top of the top plate, and a lifting plate is fixedly mounted on the piston end of the second hydraulic cylinder, buffer assemblies are fixed at the four corners of the bottom of the lifting plate, the bottom of the buffer assembly is fixedly mounted with the same movable mold frame, and an injection tube is fixed on one side of the bottom of the movable mold frame.

[0008] Furthermore, the buffer assembly includes a fixed cylinder fixed at the four corners of the bottom of the lifting plate, and buffer columns are inserted into the interior of the fixed cylinder, the bottom ends of the buffer columns are fixedly connected to the bottom inner wall of the movable mold frame, and a second spring is fixed between the top ends of the buffer columns and the top inner wall of the fixed cylinder.

[0009] Furthermore, the water pressure assembly includes a through hole opened at the top of the water tank, and an extrusion rod is inserted into the inner wall of the through hole, the cross-section of the extrusion rod is T-shaped, and a first spring is fixed between the top of the extrusion rod and the top of the water tank. The bottom end of the extrusion rod is fixedly installed with a water pressure plate that fits on the top of the inner wall of the water tank, and sealing gaskets that fit on the inner wall of the water tank are fixed around the water pressure plate. One end of the lifting plate is fixed with an extrusion plate for pressing the extrusion rod.

[0010] Furthermore, a water injection hole is opened at one end of the water storage tank, and a sealing plug is provided on the inner wall of the water injection hole. Support diagonal rods are fixed between both ends of one side of the bottom of the water storage tank and one end of the bottom plate.

[0011] Furthermore, the liquid level in the water storage tank is flush with the liquid level in the fixed mold frame.

[0012] Furthermore, the lifting assembly includes a sealing frame fixedly installed between the middle position of the bottom inner wall of the fixed mold frame and the middle position of the bottom outer wall of the inner mold frame, and a first hydraulic cylinder is fixedly installed in the middle position of the bottom of the fixed mold frame, a through hole is opened in the middle position of the bottom of the inner mold frame, and a piston rod of the first hydraulic cylinder passes through the inner wall of the sealing frame and the top end of the perforated inner wall to fix a lifting plate, and the lifting plate is attached to the bottom of the inner wall of the inner mold frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, the inner mold frame and the pressing mold assembly are used to form a pressing mold for the foam packaging box, and after the pressing is completed, the ejecting assembly is used to eject the foam packaging box from the inner mold frame to achieve the effect of automatic demoulding;

[0015] In the utility model, the height of the water pressure plate in the water pressure assembly is continuously moved downward during the pressing process, and a flow channel for cold water is formed through the water storage tank, the conduction port, the gap between the fixed mold frame and the inner mold frame, and the circulation pipe. Cold water is pumped into between the fixed mold frame and the inner mold frame, and the heat generated in the mold is taken away in time by the flowing cold water, so that the entire device is provided with a better cooling structure, which accelerates the molding speed of the foam packaging box in the mold, avoids the mold sticking phenomenon, and improves the demoulding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of a pressing die.

[0017] Figure 2 The present invention is a schematic diagram of the structure of an inner mold frame and a movable mold frame of a pressing mold.

[0018] Figure 3 The present invention is a schematic diagram of the structure of a lifting plate and a water pressure plate of a pressing mold.

[0019] Figure 4 A schematic diagram of the liquid level of a pressing mold.

[0020] Figure 5 The present invention is a schematic diagram of the structure of a buffer component of a pressing die.

[0021] In the figure: 1, bottom plate; 2, first hydraulic cylinder; 3, support column; 4, support diagonal rod; 5, water storage tank; 6, refrigeration equipment; 7, extrusion rod; 8, first spring; 9, movable mold frame; 10, extrusion plate; 11, top plate; 12, second hydraulic cylinder; 13, lifting plate; 14, buffer assembly; 1401, fixed cylinder; 1402, buffer column; 1403, second spring; 15, fixed mold frame; 16, circulation pipe; 17, inner mold frame; 18, column; 19, sealing frame; 20, lifting plate; 21, water pressure plate; 22, conduction port; 23, injection pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1-Figure 5 In an embodiment of the utility model, a pressing mold includes a bottom plate 1, and support columns 3 are fixed to the top four corners of the bottom plate 1, and the top of the support columns 3 is fixed to the same top plate 11, and a die assembly is arranged on the top plate 11, and the die assembly includes a second hydraulic cylinder 12 fixedly installed on the top of the top plate 11, and a lifting plate 13 is fixedly installed on the piston end of the second hydraulic cylinder 12, and buffer assemblies 14 are fixed to the bottom four corners of the lifting plate 13, and the bottom of the buffer assembly 14 is fixedly installed with the same movable mold frame 9, and a material injection pipe 23 is fixed to one side of the bottom of the movable mold frame 9, and the buffer assembly 14 includes a fixed cylinder 1401 fixed to the four corners of the bottom of the lifting plate 13, and the fixed cylinder 1 Buffer columns 1402 are inserted into the interior of 401, and the bottom ends of the buffer columns 1402 are fixedly connected to the bottom inner wall of the movable mold frame 9, and the top ends of the buffer columns 1402 are fixed with the second spring 1403 between the top inner wall of the fixed cylinder 1401, and a plurality of columns 18 are fixed to the top of the bottom plate 1, and the top of the columns 18 is fixedly installed with the same fixed mold frame 15, and a mounting groove is opened at the middle position of the top of the fixed mold frame 15, and the inner wall of the mounting groove is fixedly installed with the inner mold frame 17, and the movable mold frame 9 is attached to the fixed mold frame 15 by using the pressing mold assembly, and the material is injected through the injection pipe 23, so that the foam packaging box is pressed inside the inner mold frame 17 and outside the movable mold frame 9. Molding operation, a top material assembly is provided at the bottom of the inner mold frame 17, a water storage tank 5 is fixedly installed at one end of the fixed mold frame 15, and a refrigeration device 6 is fixedly installed at one end of the water storage tank 5, a conducting port 22 communicating with the water storage tank 5 is provided at the bottom of one end of the fixed mold frame 15, and a circulation pipe 16 is fixed between the inside of the water storage tank 5 on both sides of the other end of the fixed mold frame 15, and a water pressure assembly is provided on the top of the water storage tank 5, and the water pressure assembly includes a through hole opened at the top of the water storage tank 5, and an extrusion rod 7 is inserted into the inner wall of the through hole, and the cross section of the extrusion rod 7 is T-shaped, and a first spring 8 is fixed between the top of the extrusion rod 7 and the top of the water storage tank 5, and the bottom end of the extrusion rod 7 is fixedly installed with a spring 8 that fits in the water storage tank 5. The water pressure plate 21 at the top of the inner wall of the water storage tank 5 is fixed with sealing gaskets that fit the inner wall of the water storage tank 5 around it. An extrusion plate 10 for pressing the extrusion rod 7 is fixed to one end of the lifting plate 13. The lifting plate 13 and the extrusion plate 10 are continuously pressed down by the second hydraulic cylinder 12. At this time, the extrusion plate 10 will press the water pressure plate 21 in the water pressure assembly downward, and a flow channel for cold water is formed through the water storage tank 5, the conducting port 22, the gap between the fixed mold frame 15 and the inner mold frame 17, and the circulation pipe 16. The cold water is pumped between the fixed mold frame 15 and the inner mold frame 17, and the heat generated in the mold is taken away in time by the flowing cold water, thereby accelerating the molding speed of the foam packaging box in the mold.

[0025] Specifically, a water injection hole is opened at one end of the water tank 5, and a sealing plug is provided on the inner wall of the water injection hole. Support diagonal rods 4 are fixed between both ends of one side of the bottom of the water tank 5 and one end of the base plate 1, and the liquid level in the water tank 5 is flush with the liquid level in the fixed mold frame 15.

[0026] Example 2

[0027] See also Figure 1-Figure 4 The ejection assembly includes a sealing frame 19 fixedly installed between the middle position of the bottom inner wall of the fixed mold frame 15 and the middle position of the bottom outer wall of the inner mold frame 17, and a first hydraulic cylinder 2 is fixedly installed at the middle position of the bottom of the fixed mold frame 15, and a through hole is opened at the middle position of the bottom of the inner mold frame 17. The piston rod of the first hydraulic cylinder 2 passes through the inner wall of the sealing frame 19 and the top of the through-hole inner wall to fix a lifting plate 20. The lifting plate 20 is attached to the bottom of the inner wall of the inner mold frame 17. The height of the lifting plate 20 is adjusted by the first hydraulic cylinder 2 in the ejection assembly to eject the foam packaging box from the inner mold frame 17, thereby achieving the effect of easy demoulding and fast discharge.

[0028] The working principle of the utility model is as follows: when in use, the user cools down the water in the water storage tank 5 through the refrigeration device 6, and uses the second hydraulic cylinder 12 in the die assembly to lower the height of the lifting plate 13, the buffer assembly 14, the extrusion plate 10 and the movable mold frame 9, so that the movable mold frame 9 is attached to the fixed mold frame 15, and then the material is injected through the injection pipe 23, so that the foam packaging box is pressed and formed in the inner mold frame 17 and outside the movable mold frame 9, and during the pressing process, the user continuously presses down the lifting plate 13 and the extrusion plate 10 through the second hydraulic cylinder 12, and the extrusion plate 10 will press The extrusion rod 7 and the water pressure plate 21 in the dynamic water pressure assembly move downward, and a cold water flow channel is formed through the water storage tank 5, the conducting port 22, the gap between the fixed mold frame 15 and the inner mold frame 17, and the circulation pipe 16. The cold water is pumped into the gap between the fixed mold frame 15 and the inner mold frame 17, and the heat generated in the mold is taken away in time by the flowing cold water, thereby accelerating the forming speed of the foam packaging box in the mold. After forming, the user uses the second hydraulic cylinder 12 to reset the die assembly, and adjusts the height of the lifting plate 20 by the first hydraulic cylinder 2 in the ejecting assembly, so as to eject the foam packaging box from the inner mold frame 17 for easy demoulding.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A pressing die, comprising a base plate (1), characterized in that: The four corners of the top of the bottom plate (1) are all fixed with support columns (3), and the top of the support columns (3) is fixed with a top plate (11), and a die assembly is arranged on the top plate (11), a plurality of columns (18) are fixed on the top of the bottom plate (1), and the top of the columns (18) is fixedly installed with a fixed mold frame (15), a mounting groove is provided at the middle position of the top of the fixed mold frame (15), and an inner mold frame (17) is fixedly installed on the inner wall of the mounting groove, and the inner mold frame A top material assembly is arranged at the bottom of the fixed mold frame (17), a water storage tank (5) is fixedly installed at one end of the fixed mold frame (15), and a refrigeration device (6) is fixedly installed at one end of the water storage tank (5), a conducting port (22) communicating with the water storage tank (5) is opened at the bottom of one end of the fixed mold frame (15), and circulation pipes (16) are fixed between the inside of the water storage tank (5) and both sides of the other end of the fixed mold frame (15), and a water pressure assembly is arranged at the top of the water storage tank (5).

2. A pressing die according to claim 1, characterized in that: The die assembly comprises a second hydraulic cylinder (12) fixedly mounted on the top of the top plate (11), and a lifting plate (13) is fixedly mounted on the piston end of the second hydraulic cylinder (12), buffer assemblies (14) are fixedly mounted at the four corners of the bottom of the lifting plate (13), a movable mold frame (9) is fixedly mounted at the bottom of the buffer assembly (14), and a material injection pipe (23) is fixedly mounted on one side of the bottom of the movable mold frame (9).

3. A pressing die according to claim 2, characterized in that: The buffer assembly (14) comprises a fixed cylinder (1401) fixed at the four corners of the bottom of the lifting plate (13), and a buffer column (1402) is inserted into the interior of the fixed cylinder (1401), the bottom end of the buffer column (1402) is fixedly connected to the bottom inner wall of the movable mold frame (9), and a second spring (1403) is fixed between the top end of the buffer column (1402) and the top inner wall of the fixed cylinder (1401).

4. A pressing die according to claim 3, characterized in that: The water pressure assembly comprises a through hole opened at the top of the water storage tank (5), and a squeezing rod (7) is inserted into the inner wall of the through hole, the cross section of the squeezing rod (7) is T-shaped, a first spring (8) is fixed between the top of the squeezing rod (7) and the top of the water storage tank (5), a water pressure plate (21) affixed to the top of the inner wall of the water storage tank (5) is fixedly installed at the bottom end of the squeezing rod (7), sealing pads affixed to the inner wall of the water storage tank (5) are fixed around the water pressure plate (21), and a squeezing plate (10) for pressing the squeezing rod (7) is fixed at one end of the lifting plate (13).

5. A pressing die according to claim 4, characterized in that: A water injection hole is provided at one end of the water storage tank (5), and a sealing plug is provided on the inner wall of the water injection hole. Supporting diagonal rods (4) are fixed between both ends of one side of the bottom of the water storage tank (5) and one end of the bottom plate (1).

6. A pressing die according to claim 5, characterized in that: The liquid level in the water storage tank (5) is flush with the liquid level in the fixed mold frame (15).

7. A pressing die according to claim 1, characterized in that: The ejection assembly comprises a sealing frame (19) fixedly mounted between the middle position of the bottom inner wall of the fixed mold frame (15) and the middle position of the bottom outer wall of the inner mold frame (17), and a first hydraulic cylinder (2) is fixedly mounted at the middle position of the bottom of the fixed mold frame (15), a through hole is provided at the middle position of the bottom of the inner mold frame (17), a piston rod of the first hydraulic cylinder (2) passes through the inner wall of the sealing frame (19) and the top end of the through hole inner wall, and a lifting plate (20) is fixedly mounted, and the lifting plate (20) is attached to the bottom of the inner wall of the inner mold frame (17).

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