Die capable of automatically controlling product thickness

Abstract

The utility model discloses a mould capable of automatically controlling the thickness of a product in the technical field of moulds, which comprises a controller, a limiting block, a driving device and a mould, the limiting block is additionally arranged at the top of a lower mould, and the mould closing distance between an upper mould and the lower mould can be directly limited by adjusting the position of the limiting block. The mold can obtain a preset mold closing distance when being closed, meanwhile, the nucleation speed and size of bubbles in plastic melt can be controlled through the limiting block, the core withdrawing position and speed of the foaming mold can be limited, use is more convenient, the positions of the upper mold and the lower mold are limited through the top supporting rod, use is more intelligent, and only the distance needs to be set. And one set of mold can complete production and debugging of products with different thicknesses, is more flexible to use, and can be better matched with the production process of the core-withdrawing foaming mold.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, especially a mould capable of automatically controlling product thickness. BACKGROUND

[0002] Mould has been very mature technology in industrial development. Mould has developed various branches, one of which is core-pulling foaming mould.

[0003] Foaming mould is plastic foaming mould. Foaming process is that the homogeneous solution of molten plastic containing gas is injected into the mould, and the gas dissolved in the plastic is precipitated and nucleated to form a large number of small bubbles in the mould due to temperature and pressure change, and the pressure drop helps the bubble growth to produce microporous plastic products. The opening speed and stroke of the mould need to be controlled to make the plastic products form the final set thickness and set density and size of micropores.

[0004] The core-pulling foaming mould can greatly improve the strength of the product with the increase of thickness, and the bending strength can be close to that of aluminum alloy under the same weight. Under the same volume, the product is lighter and saves materials.

[0005] The core-pulling foaming mould is different from the conventional mould. The parting surface between the concave surface and the convex surface of the conventional mould needs to be kept in a fixed position, and the thickness of the mould injection molding is also fixed. The thickness of the product of the core-pulling foaming mould can be adjusted according to the distance of the core-pulling, and the mould does not need to be changed, only the position relationship of the clamping distance needs to be adjusted.

[0006] However, the conventional mould cannot adjust the mould relationship, and only the whole mould can be replaced. The mould is not only complex in process, time-consuming in production, and high in production cost. When different thickness products need to be tried or debugged, different gap moulds need to be produced for production trial and error. The mould needs to be produced and debugged, and the mould needs to be produced and debugged. It needs to consume high cost, which is not conducive to mould research and development. When the same shape mould needs to produce products with different thickness, different moulds need to be used for production, which leads to a large number of moulds being processed, but the frequency of use is not high, which is not conducive to cost reduction and efficiency increase.

[0007] Therefore, the utility model designs a mould capable of automatically controlling product thickness to solve the above problems. UTILITY MODEL CONTENTS

[0008] The utility model discloses a mould of automatic control product thickness has increased the limiting block, can pass through the position adjustment of limiting block, directly the interval between upper die and lower die is restricted, can obtain the preset die closing interval when mould closes, can limit the thickness of plastic product through limiting block simultaneously, and the speed of foaming mould core withdrawal can also be limited, and it is more convenient to use, and the position of upper and lower mould is limited through the top support rod, and it is more intelligent, just sets up interval, can automatically adjust.

[0009] The utility model discloses a mould of automatic control product thickness includes:

[0010] Controller, limiting block, drive arrangement and mould;

[0011] The mould includes lower die and upper die, and the lower die and the upper die form a complete foaming mould;

[0012] The controller is arranged on the mould, and a distance sensor and a display screen are further connected to the controller, the distance sensor is embedded in the lower die, and the top of the distance sensor is flush with the parting surface of the lower die;

[0013] The limiting block is a square block structure, the limiting block is installed at the top of the side wall of the lower die, a spring is further arranged at the top of the limiting block, and the top of the spring is elastically supported by the upper die;

[0014] The drive arrangement is arranged in the lower die, a top support rod is vertically arranged at the top of the drive arrangement, the top support rod is vertically lifted by the drive arrangement, and the limiting block is locked with the upper end of the top support rod;

[0015] The limiting block is lifted and supported at the top of the lower die by the top support rod.

[0016] Further, the limiting block has a plurality of limiting blocks, and the plurality of limiting blocks are evenly distributed around the periphery of the lower die;

[0017] Each limiting block is locked on the top support rod by a bolt;

[0018] The limiting block has a plurality of replacement parts with different heights.

[0019] Further, the drive arrangement is a servo motor, and the top support rod is an electric telescopic rod.

[0020] The utility model discloses a mould of automatic control product thickness has increased the limiting block, can pass through the position adjustment of limiting block, directly the interval between upper die and lower die is restricted, can obtain the preset die closing interval when mould closes, can limit the thickness of plastic product through limiting block simultaneously, and the speed of foaming mould core withdrawal can also be limited, and it is more convenient to use, and the position of upper and lower mould is limited through the top support rod, and it is more intelligent, just sets up interval, can automatically adjust.

[0021] 2、The device also increases the spring through the spring can buffer the impact force between the upper and lower molds, and can ensure that the upper and lower molds are separated by the spacer when the foaming agent is used, the gap of the spring, thereby avoiding the situation that the mold parting surface is excessively attached and the foaming agent cannot separate the upper and lower molds, resulting in the situation that the core cannot be withdrawn;

[0022] 3、The device also increases the controller and the driving device, and controls the lifting height of the limiting block through the spacer rod, so that the closing gap of the upper and lower molds can be automatically controlled, and the distance sensor is added to monitor the position of the upper mold in real time, so that the closing gap of the entire mold can be conveniently adjusted, the operation is simple, the use is convenient, and multiple sets of molds are no longer needed for repeated adjustment, and a set of molds can complete the production and sample of products with different thicknesses. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described below in combination with the embodiments with reference to the drawings.

[0024] Fig. 1 It is a limiting block installation state structure diagram of the lower mold of the utility model;

[0025] Fig. 2 It is a limiting block structure diagram of the utility model;

[0026] Fig. 3 It is a structure diagram of the spacer rod and the limiting block in the lower mold.

[0027] In the drawings, the components represented by each reference numeral are listed as follows:

[0028] 1-controller, 11-distance sensor, 12-display screen, 2-limiting block, 21-spring, 3-driving device, 31-spacer rod, 4-lower mold, 41-upper mold. DETAILED DESCRIPTION

[0029] Please refer to Figs. 1 to 3 The utility model provides a mold capable of automatically controlling product thickness, in order to better understand the above technical scheme, the above technical scheme will be explained in detail below in combination with the drawings and specific embodiments of the specification.

[0030] In one specific embodiment of the technical scheme of the utility model:

[0031] It comprises a controller 1, a limiting block 2, a driving device 3 and a mold;

[0032] The mold comprises a lower mold 4 and an upper mold 41, and the lower mold 4 and the upper mold 41 form a complete foaming mold;

[0033] The controller 1 is arranged on the mold, the controller 1 is a single-chip microcomputer, the distance between the upper die 4 and the lower die 41 is set through the single-chip microcomputer and the operation panel, then the lifting height of the top support rod 31 is controlled by the driving device 3, and the mold closing fitting height can be controlled by the distance sensor 11, so that the automatic operation is simpler.

[0034] The limiting block 2 is a square block structure, the limiting block 2 is installed at the top of the side wall of the lower die 4, and the top of the limiting block 2 is further provided with a spring 21, and the top of the spring 21 is elastically supported by the upper die 41.

[0035] Each limiting block 2 is locked on the top support rod 31 through a bolt; through bolt locking, the limiting block 2 can be conveniently replaced.

[0036] The limiting block 2 has a plurality of replacement parts with different heights. The bottom of the limiting block 2 is supported in the groove at the top of the top support rod 31 and locked from the side by a bolt, without affecting the supporting surface at the top of the limiting block 2. The height control of the driving device 3 has certain limitations, especially the lifting fitting precision. When the precision control part is good, a plurality of limiting blocks 2 can be replaced, and different thickness of gaskets can be added at the bottom to adapt and adjust, so that the tops of all limiting blocks 2 are kept on the same plane. Especially when the equipment needs to be installed and debugged, the vertical lifting of the top support rod 31 controlled by the driving device 3 will affect the top height plane of the limiting block 2, and also cause the upper die 41 and the lower die 4 to be asymmetrically fitted and contacted. The design of the device can fine-tune and replace the limiting block 2, and also replace the limiting block 2 that is worn out or damaged by impact after long-term use.

[0037] The driving device 3 is arranged in the lower die 4, and the top support rod 31 is vertically arranged at the top of the driving device 3; the top support rod 31 is vertically lifted by the driving device 3; and the limiting block 2 is locked with the upper end of the top support rod 31.

[0038] The limiting block 2 is lifted and supported at the top of the lower die 4 by the top support rod 31. The driving device 3 is a servo motor, and the top support rod 31 is an electric telescopic rod. Different heights need to be adjusted, and the controller 1 needs to be adjusted automatically. The structure of the motor controlling the telescopic rod is a telescopic structure commonly used in automation.

[0039] In use, the limiting block 2 is debugged first to ensure that all the limiting blocks 2 are stably supported and the top height positions of the limiting blocks 2 are on the same plane.

[0040] Through the controller 1, the gap height between the upper die 41 and the lower die 4, i.e. the position height monitored by the distance sensor 11, is set, and when the mold is in the closed state, the gap is set, then the driving device 3 controls the top support rod 31 to adjust until the set height is reached, without manual measurement by personnel, and the measurement accuracy is higher, and then production can be started.

[0041] The upper die 41 presses the limiting block 2 downward to realize mold closing, and the upper die 41 and the lower die 4 need to be closely attached first, at this time the limiting block 2 is retracted in the lower die 4, then injection molding is performed in the mold, then a foaming agent is injected into the product, the mold starts to expand and separate, the spring 21 can avoid the upper die 41 and the lower die 4 from being attached and adsorbed, after the mold is separated to the set gap, the top support rod 31 remains fixed in position, the foaming agent foams in the limited space, so that the product between the upper die 41 and the lower die 4 maintains the set thickness, and the injection molding production is completed.

[0042] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that the specific examples described by us are only illustrative, and are not used to limit the scope of the utility model, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the utility model should be covered within the scope of the claims of the utility model.

Claims

1. A mold capable of automatically controlling the thickness of a product, characterized by, Including: Controller (1), limit block (2), drive device (3) and mold; The mold comprises a lower mold (4) and an upper mold (41), and the lower mold (4) and the upper mold (41) constitute a complete foaming mold; The controller (1) is arranged on the mold, and a distance sensor (11) and a display screen (12) are further connected on the controller (1), the distance sensor (11) is embedded in the lower mold (4), and the top of the distance sensor (11) is flush with the parting surface of the lower mold (4); The limit block (2) is a square block structure, the limit block (2) is installed at the top of the side wall of the lower mold (4), and a spring (21) is further arranged at the top of the limit block (2), and the top of the spring (21) is elastically supported by the upper mold (41); The drive device (3) is arranged in the lower mold (4), a top support rod (31) is vertically arranged at the top of the drive device (3), the top support rod (31) is vertically lifted by the drive device (3), and the limit block (2) is locked with the upper end of the top support rod (31); The limit block (2) is lifted and supported on the top of the lower mold (4) by the top support rod (31).

2. The mold capable of automatically controlling the thickness of a product according to claim 1, wherein: The limit block (2) has a plurality of limit blocks (2) which are uniformly distributed around the periphery of the lower mold (4); Each limit block (2) is locked on the top support rod (31) by a bolt; The limit block (2) has a plurality of replacement parts with different heights.

3. The mold capable of automatically controlling the thickness of a product according to claim 1, wherein: The drive device (3) is a servo motor, and the top support rod (31) is an electric telescopic rod.

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