Plastic drum forming mold

Abstract

The utility model discloses a plastic drum forming mold, which relates to the field of blow molding molds, and comprises a fixed seat, a hydraulic push cylinder is fixedly mounted on the inner side of a vertical plate part of the fixed seat, the output end of the hydraulic push cylinder is fixedly connected with a mold, inner cavities of the two molds are combined into a forming cavity, and the forming cavity is fixedly connected with the vertical plate part of the fixed seat. Guide mechanisms are distributed and installed on the top of the mold and the inner side of the side plate part of the fixed seat, extrusion lifting mechanisms are distributed and installed on the two sides and the lower portion of the mold, each extrusion lifting mechanism comprises a lifting plate, and a sliding air pipe penetrating to the upper portion of the lifting plate is integrally formed at the bottom end of each lifting plate; the outer wall of the sliding air pipe is slidably connected with a fixed air pipe. The extrusion lifting mechanism is arranged, downward movement or upward movement of the sliding air pipe is achieved through movement of the die, and therefore an executing mechanism for controlling the air pipe to move is omitted, cost is relatively low, and the performance of the device is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to blow mould field, concretely is a plastic round bucket forming die. BACKGROUND

[0002] Also called hollow blow molding, a kind of rapidly developing plastic processing method, the plastic suitable for blow molding has polyethylene, polyvinyl chloride, polypropylene, polyester etc., and the hollow container obtained is widely used as industrial packaging container.

[0003] In prior art, after the blow molding of barrel body is completed, the air pipe is driven to move downward by executing mechanism (such as electric push cylinder), to avoid the operation interference of air pipe to the removed barrel body, and this control mode needs independent executing mechanism to carry out independent control, and the cost is relatively high. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in order to solve the problem in the prior art, provide a plastic round bucket forming die.

[0005] To achieve the above object, the utility model provides the following technical scheme: a plastic round bucket forming die, including fixed base, the inner side of the vertical board part of fixed base is fixedly installed with hydraulic push cylinder, the output end of hydraulic push cylinder is fixedly connected with mould, the inner cavity of two moulds is combined as forming cavity, the top of mould and the inner side of the side plate part of fixed base are distributed and installed with guide mechanism, the both sides and the lower of mould are distributed and installed with extrusion lifting mechanism, the extrusion lifting mechanism includes lifting plate, the bottom end of lifting plate is integrally formed with sliding air pipe that penetrates to the upper of lifting plate, the outer wall of sliding air pipe is slidably connected with fixed air pipe, the fixed air pipe is fixedly connected with the horizontal plate part of fixed base.

[0006] As a further scheme of the utility model: the guide mechanism includes sliding ear fixedly installed on the top of mould, the inner wall of sliding ear is slidably connected with guide rod, the both ends of guide rod are fixedly connected with the inner side of vertical plate part of fixed base respectively.

[0007] As a further scheme of the utility model: the extrusion lifting mechanism includes extrusion block integrally formed below the side of two moulds away from each other, the side of two extrusion blocks away from each other is integrally formed with extrusion inclined surface.

[0008] As a further scheme of the utility model: the extrusion lifting mechanism further includes lifting plate located below mould, the top end of lifting plate is in contact with the bottom end of mould, the both ends of lifting plate are integrally formed with the pressure block that projects upward, the side of two pressure blocks close to each other is integrally formed with pressure inclined surface.

[0009] As a further scheme of the utility model: the extrusion lifting mechanism further includes a lifting rod fixedly installed at the four corners of the bottom end of the lifting plate, the lifting rod penetrates to below the horizontal plate part of the fixed seat, and the bottom end of the lifting rod is integrally formed with a limiting plate, a spring is abutted between the top end of the horizontal plate part of the fixed seat and the bottom end of the lifting plate, and the spring is sleeved on the outer wall of the lifting rod.

[0010] As a further scheme of the utility model: the bottom end of the sliding air pipe is integrally formed with a resistance reduction taper surface.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] By setting the extrusion lifting mechanism, the downward movement or upward movement of the sliding air pipe is realized by the movement of the mold, so that the execution mechanism for controlling the movement of the air pipe is cancelled, the cost is relatively low, and the performance of the device is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is an internal structural schematic view of the utility model;

[0015] Figure 3 It is a Figure 2 It is a local enlarged view of A in the middle;

[0016] Figure 4 It is a front view of the lifting rod of the utility model.

[0017] In the drawing: 1, fixed seat; 2, hydraulic push cylinder; 3, mold; 4, sliding ear; 5, guide rod; 6, extrusion block; 7, lifting plate; 8, pressure receiving block; 9, sliding air pipe; 10, fixed air pipe; 11, resistance reduction taper surface; 12, extrusion inclined surface; 13, pressure receiving inclined surface; 14, lifting rod; 15, spring; 16, limiting plate. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Please refer to Figures 1-4The utility model discloses an embodiment of a kind of plastic round barrel forming die, including fixed seat 1, the vertical board portion inside fixed mounting of fixed seat 1 has hydraulic push cylinder 2, the output end of hydraulic push cylinder 2 is fixedly connected with mould 3, the inner cavity of two moulds 3 is combined as forming cavity, the top of mould 3 is distributed with the inside of the side plate portion of fixed seat 1 upper installation guide mechanism, the both sides and below of mould 3 are distributed with extrusion lifting mechanism, and extrusion lifting mechanism includes lifting plate 7, the bottom end of lifting plate 7 is integrally formed with the sliding air pipe 9 that penetrates to the above of lifting plate 7, the outer wall of sliding air pipe 9 is slidably connected with fixed air pipe 10, and fixed air pipe 10 is fixedly connected with the transverse plate portion of fixed seat 1.

[0020] In the embodiment: first, after raw material falls from top to bottom, hollow columnar raw material lower opening is located above sliding air pipe 9, then start hydraulic push cylinder 2, hydraulic push cylinder 2 synchronously pushes two moulds 3 to be close to each other, until the butt joint surface of two hydraulic push cylinders 2 effectively contacts, at this time, the inner cavity of two moulds 3 constitutes a forming cavity, then start the air pump connected with fixed air pipe 10, and air pump pumps high-pressure air into the inside of raw material, and raw material is expanded outward under air pressure, until it is attached to the inner wall of forming cavity, at this time, blow molding can be completed.

[0021] After forming, by reversing operation hydraulic push cylinder 2, hydraulic push cylinder 2 drives mould 3 to reset, and mould 3 drives the extrusion lifting mechanism part connected with it to move axially during resetting, and the extrusion lifting mechanism part extrudes the extrusion lifting mechanism of another part after moving to predetermined position, and the extrusion lifting mechanism of another part then pushes sliding air pipe 9 to shrink downward, at this time, the formed barrel body can be removed by grabbing device, avoid the moving interference phenomenon caused by sliding air pipe 9 in situ.

[0022] Please refer to Figure 1 and Figure 2 , guide mechanism includes sliding ear 4 fixedly installed on the top of mould 3, the inner wall of sliding ear 4 is slidably connected with guide rod 5, and both ends of guide rod 5 are fixedly connected with the inside of vertical plate portion of fixed seat 1.

[0023] In the embodiment: hydraulic push cylinder 2 pushes mould 3 to move axially, and mould 3 drives sliding ear 4 to slide along the outer wall of guide rod 5.

[0024] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, the extrusion lifting mechanism comprises extrusion blocks 6 integrally formed below the side of the two molds 3 away from each other, the side of the two extrusion blocks 6 away from each other is integrally formed with extrusion inclined surfaces 12, the extrusion lifting mechanism further comprises a lifting plate 7 located below the molds 3, the top end of the lifting plate 7 is in contact with the bottom end of the molds 3, the two ends of the lifting plate 7 are integrally formed with upward protruding pressure receiving blocks 8, the side of the two pressure receiving blocks 8 close to each other is integrally formed with pressure receiving inclined surfaces 13, the extrusion lifting mechanism further comprises lifting rods 14 fixedly installed at the four corners of the bottom end of the lifting plate 7, the lifting rods 14 penetrate below the horizontal plate part of the fixed seat 1, and the bottom end of the lifting rods 14 is integrally formed with a limiting plate 16, the spring 15 is in abutment between the top end of the horizontal plate part of the fixed seat 1 and the bottom end of the lifting plate 7, and the spring 15 is sleeved on the outer wall of the lifting rod 14.

[0025] In the embodiment: when the two molds 3 move in opposite directions, the moving mold 3 drives the extrusion block 6 to move, when the extrusion inclined surface 12 of the extrusion block 6 is in contact with the pressure receiving inclined surface 13 of the pressure receiving block 8, at this time, the pressure receiving block 8 moves downward under the pressure, the pressure receiving block 8 drives the lifting plate 7 to move downward, at this time, the lifting plate 7 drives the lifting rod 14 to slide downward, at this time, the spring 15 is compressed, and at the same time, the downward moving lifting plate 7 drives the sliding air pipe 9 to slide downward, and is separated from the opening of the formed barrel body, so that the formed barrel body is convenient to take out;

[0026] When the next blow molding is performed, the two molds 3 are reset, the extrusion block 6 and the pressure receiving block 8 gradually disengage, at this time, the spring 15 is reset, until the extrusion block 6 and the pressure receiving block 8 are completely disengaged, at this time, the spring 15 is completely reset, the spring 15 drives the lifting rod 14 to reset upward, until the top of the limiting plate 16 is in contact with the bottom end of the fixed seat 1, at this time, the sliding air pipe 9 is also completely reset, at this time, the sliding air pipe 9 is inserted into the bottom opening of the raw material from below, and the next blow molding work can be performed;

[0027] It should be noted that the bottom end of the mold 3 is provided with a circular groove for inserting the sliding air pipe 9 into the inner cavity thereof, the inner diameter of the circular groove is slightly larger than the outer diameter of the sliding air pipe 9, when the two molds 3 are abutted, the space left over is used for the raw material to be compressed and deformed, so that the air leakage does not occur.

[0028] Please refer to Figure 2 The bottom end of the sliding air pipe 9 is integrally formed with a resistance reducing tapered surface 11.

[0029] In the embodiment: the design of the resistance reducing tapered surface 11 can reduce the resistance of the airflow in the process of entering the forming cavity, and it should be noted that the position where the fixed air pipe 10 is in contact with the sliding air pipe 9 is provided with a sealing element, so as to improve the sealing performance.

[0030] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A plastic drum forming mold comprising a fixed seat (1), characterized in that, The vertical plate part of the fixed seat (1) is fixedly installed with a hydraulic push cylinder (2), the output end of the hydraulic push cylinder (2) is fixedly connected with a mold (3), the inner cavities of two molds (3) are combined as a forming cavity, the top of the mold (3) and the inner side of the side plate part of the fixed seat (1) are distributedly installed with a guide mechanism, the two sides and the lower part of the mold (3) are distributedly installed with an extrusion lifting mechanism, the extrusion lifting mechanism comprises a lifting plate (7), the bottom end of the lifting plate (7) is integrally formed with a sliding air pipe (9) penetrating through the upper part of the lifting plate (7), the outer wall of the sliding air pipe (9) is slidably connected with a fixed air pipe (10), and the fixed air pipe (10) is fixedly connected with the horizontal plate part of the fixed seat (1).

2. A plastic pail forming mold according to claim 1, wherein The guide mechanism comprises a sliding ear (4) fixedly installed on the top of the mold (3), the inner wall of the sliding ear (4) is slidably connected with a guide rod (5), and the two ends of the guide rod (5) are fixedly connected with the inner side of the vertical plate part of the fixed seat (1).

3. A plastic pail forming mold according to claim 2 wherein, The extrusion lifting mechanism comprises an extrusion block (6) integrally formed below the side away from each other of two molds (3), and the side away from each other of two extrusion blocks (6) is integrally formed with an extrusion inclined surface (12).

4. A plastic pail forming mold according to claim 3 wherein, The extrusion lifting mechanism further comprises a lifting plate (7) located below the mold (3), the top end of the lifting plate (7) is in contact with the bottom end of the mold (3), and the two ends of the lifting plate (7) are integrally formed with upward protruding pressure receiving blocks (8), and the side close to each other of two pressure receiving blocks (8) is integrally formed with a pressure receiving inclined surface (13).

5. A plastic pail forming mold according to claim 4 wherein, The extrusion lifting mechanism further comprises a lifting rod (14) fixedly installed at the bottom end of the lifting plate (7) at four corners, the lifting rod (14) penetrates through the horizontal plate part below the fixed seat (1), the bottom end of the lifting rod (14) is integrally formed with a limiting plate (16), the top end of the horizontal plate part of the fixed seat (1) and the bottom end of the lifting plate (7) abut against a spring (15), and the spring (15) is sleeved on the outer wall of the lifting rod (14).

6. A plastic pail forming mold according to claim 2 wherein, The bottom end of the sliding air pipe (9) is integrally formed with a resistance reducing cone surface (11).

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