Plastic cover production mold

Abstract

The utility model relates to the technical field of plastic cover production, and discloses a plastic cover production mold which comprises a lower mold and an upper mold located above the lower mold, a concave mold block is fixedly connected to the upper surface of the lower mold in an embedded mode, a convex mold block is fixedly connected to the lower surface of the upper mold, and a demolding mechanism is arranged in the lower mold. A cleaning mechanism is arranged on the left side surface of the lower mold; the demolding mechanism is arranged, during demolding, the upper mold pulls a plastic cover upwards through the male mold block, the first telescopic cylinder in the demolding mechanism drives the jacking rod to jack the plastic cover upwards, and therefore auxiliary demolding is achieved, and the pulling force of the female mold block to the plastic cover is reduced; and a second telescopic cylinder drives a cleaning sleeve to ascend, so that the male die block is sleeved with cleaning cotton, a second motor drives the cleaning cotton to rotate to clean the surface of the male die block, plastic residues are cleaned away, and the situation that in the next injection molding process, the plastic residues affect the quality of plastic cover products is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic cover production, and specifically relates to a plastic cover production mold. BACKGROUND

[0002] Plastic covers need to be produced by injection molding using special molds during production. When producing plastic covers, the upper mold cover is first placed on the lower mold, then the material is injected into the mold cavity of the lower mold through the injection pipe, and then the upper mold cover is opened after the part cools for a period of time, and the injection-molded plastic cover is removed. Since the part is cooled and formed in the mold by injection molding, the part is tightly attached to the inner wall of the mold cavity during the molding and cooling process, resulting in a large friction force. When the plastic cover is pulled out of the lower mold by opening the upper mold cover, it is easy to deform due to the strong pulling force, thereby causing the plastic cover to be damaged and unable to be used.

[0003] A special forming mold for plastic cover production (authorized publication number CN218342714U) is disclosed in a Chinese patent. The patent technology sets up an auxiliary material taking mechanism, so that when the plastic cover is taken out after injection molding and cooling, the upper mold plate is first pulled to pull out the injection threaded pipe and the insertion rod from the lower mold. The injection threaded pipe moves upward when it is pulled out of the lower mold. At this time, the elastic unit extrudes and pushes the unit upward. The pushing unit extrudes the plastic cover with the assistance of the rolling unit, and then the injection threaded pipe helps to pull out the plastic cover from the lower mold. After being pulled out, the plastic cover is unscrewed by the staff, so that the plastic cover can be taken out after injection molding and cooling. The pulling force on the plastic cover is reduced, the deformation caused by pulling is reduced, and the material taking efficiency is effectively improved.

[0004] However, it has certain disadvantages. During injection molding, plastic residues will accumulate on the surface of the injection threaded pipe of the mold, which will be brought into new plastic cover products during injection molding, thereby forming defects such as pitting, bubbles, and scratches on the surface of the product. These defects not only affect the appearance of the product, but also may reduce the durability and service life of the product. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a plastic cover production mold to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A plastic cover production mold, comprising a lower mold and an upper mold located above the lower mold, the upper surface of the lower mold is embedded and fixed with a female die module, the lower surface of the upper mold is fixed with a male die module, and the inside of the lower mold is provided with an ejection mechanism;

[0008] The left surface of the lower mold is provided with a cleaning mechanism, the cleaning mechanism comprises a fixing seat, the lower surface of the fixing seat is fixedly connected with a second telescopic cylinder, the telescopic end of the second telescopic cylinder is fixedly connected with a fixing plate, the lower surface of the fixing plate is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a first gear, the upper surface of the fixing plate is rotatably connected with a rotating rod, the outer portion of the rotating rod is fixedly connected with a second gear, and the upper end of the rotating rod is provided with a cleaning piece.

[0009] As a further scheme of the utility model: the demolding mechanism comprises a supporting plate, the lower surface of the supporting plate is fixedly connected with a first telescopic cylinder, the telescopic end of the first telescopic cylinder is fixedly connected with a jacking plate, and the upper surface of the jacking plate is fixedly connected with a jacking rod.

[0010] As a further scheme of the utility model: the cleaning piece comprises a rotating plate, the lower surface of the rotating plate is fixedly connected with a second motor at the end away from the rotating rod, the output end of the second motor is fixedly connected with a cleaning sleeve, and the inside of the cleaning sleeve is fixedly connected with cleaning cotton.

[0011] As a further scheme of the utility model: the female mold block is opposite to the male mold block, the right end of the fixing seat is fixedly connected to the left surface of the lower mold, and the first gear is meshingly connected to the second gear.

[0012] As a further scheme of the utility model: the rear end of the supporting plate is fixedly connected to the inner rear surface of the lower mold, and the jacking rod is movably penetrated through the inner wall of the lower mold and the female mold block.

[0013] As a further scheme of the utility model: the upper end of the rotating rod is fixedly connected to the lower surface of the rotating plate.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1、The utility model discloses a demolding mechanism is set up, and when demolding, the upper mold is lifted and is pulled upward to the plastic cover through the male mold block, and at the same time, the first telescopic cylinder in the demolding mechanism drives the jacking rod to lift the plastic cover upward, thereby realizing auxiliary demolding and reducing the pulling force of the female mold block on the plastic cover.

[0016] 2、The utility model discloses a cleaning mechanism is set up, and the first motor in the cleaning mechanism drives the cleaning sleeve to be opposite to the female mold block, the second telescopic cylinder drives the cleaning sleeve to lift and make the cleaning cotton sleeve be arranged to the outside of the male mold block, the second motor drives the cleaning cotton to rotate and clean the surface of the male mold block, and plastic residues are cleaned away, so that the quality of the plastic cover product is not influenced by the plastic residues during the next injection molding. DRAWINGS

[0017] Figure 1 It is a kind of plastic cover production mold structure schematic diagram;

[0018] Figure 2 A partial sectional view of a mold for producing a plastic cover;

[0019] Figure 3 A structural schematic view of a demolding mechanism in a mold for producing a plastic cover;

[0020] Figure 4 A structural schematic view of a cleaning mechanism in a mold for producing a plastic cover;

[0021] Figure 5 A structural schematic view of a cleaning piece in a mold for producing a plastic cover.

[0022] In the figure: 1, lower mold; 2, upper mold; 3, concave mold block; 4, convex mold block; 5, demolding mechanism; 6, support plate; 7, first telescopic cylinder; 8, jacking plate; 9, jacking rod; 10, cleaning mechanism; 11, fixed seat; 12, second telescopic cylinder; 13, fixed plate; 14, first motor; 15, first gear; 16, rotating rod; 17, second gear; 18, cleaning piece; 19, rotating plate; 20, second motor; 21, cleaning sleeve; 22, cleaning cotton. DETAILED DESCRIPTION

[0023] Please refer to Figures 1-3 In the embodiment of the utility model, a mold for producing a plastic cover, including lower mold 1 and located lower mold 1 upper mold 2, the upper surface of lower mold 1 is embedded and is fixed with concave mold block 3, the lower surface of upper mold 2 is fixed with convex mold block 4, and concave mold block 3 is directly opposite convex mold block 4, the inside of lower mold 1 is provided with demolding mechanism 5, and demolding mechanism 5 includes support plate 6, the rear end of support plate 6 is fixed to the inside rear surface of lower mold 1, the lower surface of support plate 6 is fixed with first telescopic cylinder 7, the telescopic end of first telescopic cylinder 7 is fixed with jacking plate 8, the upper surface of jacking plate 8 is fixed with jacking rod 9, and jacking rod 9 movably penetrates the inner wall of lower mold 1 and concave mold block 3;

[0024] Upper mold 2 is provided with injection molding hole, and injection molding hole is communicated with the inside of convex mold block 4, is used for carrying out injection molding between concave mold block 3 and convex mold block 4, so that plastic cover is formed;

[0025] The surface of convex mold block 4 is provided with thread, is used for the generation of plastic cover inner thread;

[0026] Upper mold 2 is connected to hydraulic system, and is driven by hydraulic system to open and close mold, and upper mold 2 rises and drives plastic cover to leave from concave mold block 3;

[0027] First telescopic cylinder 7 is preferably air cylinder, and the initial state of jacking rod 9 is that the upper surface is flush with the lower surface in the inside of concave mold block 3, and jacking rod 9 is used to jacking plastic cover upward when upper mold 2 rises, and assists demolding;

[0028] The hydraulic system and the first telescopic cylinder 7 are connected to an external control system.

[0029] In Figure 1 , Figure 2 , Figure 4 and Figure 5 : the left surface of the lower die 1 is provided with a cleaning mechanism 10, the cleaning mechanism 10 comprises a fixed seat 11, the right end of the fixed seat 11 is fixedly connected to the left surface of the lower die 1, the lower surface of the fixed seat 11 is fixedly connected with a second telescopic cylinder 12, the telescopic end of the second telescopic cylinder 12 is fixedly connected with a fixed plate 13, the lower surface of the fixed plate 13 is fixedly connected with a first motor 14, the output end of the first motor 14 is fixedly connected with a first gear 15, the upper surface of the fixed plate 13 is rotatably connected with a rotating rod 16, the outside of the rotating rod 16 is fixedly connected with a second gear 17, the first gear 15 is meshingly connected to the second gear 17, the upper end of the rotating rod 16 is provided with a cleaning piece 18, the cleaning piece 18 comprises a rotating plate 19, the upper end of the rotating rod 16 is fixedly connected to the lower surface of the rotating plate 19, the lower surface of the rotating plate 19 is fixedly connected with a second motor 20 at the end away from the rotating rod 16, the output end of the second motor 20 is fixedly connected with a cleaning sleeve 21, and the inside of the cleaning sleeve 21 is fixedly connected with cleaning cotton 22.

[0030] The second telescopic cylinder 12 is preferably a pneumatic cylinder;

[0031] The first motor 14 is provided with a brake, that is, after power-off, the motor shaft cannot rotate; the first motor 14 is preferably a stepping motor or a servo motor, which can rotate an accurate angle each time it is started and stopped;

[0032] After the upper die 2 is away from the lower die 1, the rotating plate 19 is rotated by a certain angle to drive the cleaning sleeve 21 to be located directly below the convex die block 4, and the second telescopic cylinder 12 is extended to drive the cleaning cotton 22 to be extruded and sleeved on the outside of the convex die block 4, so as to clean the residues on the surface of the convex die block 4.

[0033] The working principle of the utility model is as follows: in use, the lower die 1 and the upper die 2 are closed, the injection material is discharged through the injection hole to the space between the concave die block 3 and the convex die block 4, after the plastic cover is formed, the upper die 2 is lifted to drive the plastic cover to leave the inside of the concave die block 3, at the same time, the first telescopic cylinder 7 is extended to drive the jacking rod 9 to lift and push the plastic cover, thereby assisting the demolding; then, the staff rotates the plastic cover to detach it from the convex die block 4; the first motor 14 drives the rotating rod 16 to rotate by a certain angle through the first gear 15 and the second gear 17, so that the cleaning sleeve 21 is directly opposite to the convex die block 4, the second telescopic cylinder 12 is extended to drive the cleaning cotton 22 to be sleeved on the outside of the convex die block 4, the second motor 20 drives the cleaning sleeve 21 to rotate, so that the cleaning cotton 22 fully cleans the convex die block 4, thereby avoiding the influence of the residues on the surface of the convex die block 4 on the quality of the next plastic cover.

[0034] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this, and any person skilled in the art, according to the technical scheme and the inventive concept of the present application, can make 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.

[0035] In the description of the present application, it should be explained that, unless explicitly defined and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A plastic cover production mold, comprising a lower mold (1) and an upper mold (2) located above the lower mold (1), the upper surface of the lower mold (1) is embedded with a female mold block (3), the lower surface of the upper mold (2) is fixedly connected with a male mold block (4), and the inside of the lower mold (1) is provided with a demolding mechanism (5); characterized in that The left surface of the lower mold (1) is provided with a cleaning mechanism (10), the cleaning mechanism (10) comprises a fixed seat (11), the lower surface of the fixed seat (11) is fixedly connected with a second telescopic cylinder (12), the telescopic end of the second telescopic cylinder (12) is fixedly connected with a fixed plate (13), the lower surface of the fixed plate (13) is fixedly connected with a first motor (14), the output end of the first motor (14) is fixedly connected with a first gear (15), the upper surface of the fixed plate (13) is rotatably connected with a rotating rod (16), the outer portion of the rotating rod (16) is fixedly connected with a second gear (17), and the upper end of the rotating rod (16) is provided with a cleaning piece (18).

2. The plastic cap production mold according to claim 1, wherein The demolding mechanism (5) comprises a support plate (6), the lower surface of the support plate (6) is fixedly connected with a first telescopic cylinder (7), the telescopic end of the first telescopic cylinder (7) is fixedly connected with a jacking plate (8), and the upper surface of the jacking plate (8) is fixedly connected with a jacking rod (9).

3. The plastic cap production mold according to claim 1, wherein The cleaning piece (18) comprises a rotating plate (19), the lower surface of the rotating plate (19) is fixedly connected with a second motor (20) away from one end of the rotating rod (16), the output end of the second motor (20) is fixedly connected with a cleaning sleeve (21), and the inside of the cleaning sleeve (21) is fixedly connected with cleaning cotton (22).

4. The plastic cap production mold according to claim 1, wherein The female mold block (3) is opposite to the male mold block (4), the right end of the fixed seat (11) is fixedly connected to the left surface of the lower mold (1), and the first gear (15) is meshingly connected to the second gear (17).

5. The plastic cap production mold according to claim 2, wherein The rear end of the support plate (6) is fixedly connected to the inner rear surface of the lower mold (1), and the jacking rod (9) movably penetrates the inner wall of the lower mold (1) and the female mold block (3).

6. The plastic cap production mold according to claim 3, wherein The upper end of the rotating rod (16) is fixedly connected to the lower surface of the rotating plate (19).

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