CN211807601U

CN211807601U - Mould exhaust apparatus

Info

Publication number: CN211807601U
Application number: CN201922166816.2U
Authority: CN
Inventors: 谭洪; 潘耀华; 谭建志; 郭伟
Original assignee: Heshan Liansu Industrial Development Co Ltd
Current assignee: Heshan Liansu Industrial Development Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-10-30
Anticipated expiration: 2029-12-05

Abstract

The utility model relates to the technical field of plastic molding, in particular to a mold exhaust device which is applied to a mold structure, wherein a cavity which can be communicated with the external environment is arranged in the mold structure, and the bottom of the cavity is provided with a temperature sensing point; the exhaust device comprises a controller, a temperature sensing mechanism connected with the input end of the controller and a mechanical slide block mechanism connected with the output end of the controller, wherein the temperature sensing mechanism is in signal connection with a temperature sensing point; the die structure is internally provided with a guide hole communicated with the die cavity, and the guide hole is internally provided with a sealing insert pin which can rise under the action of a mechanical slide block mechanism to seal the die cavity. The utility model adopts the open type cavity to inject the plastic product, can exhaust gas quickly and in time, and effectively avoids the unqualified phenomena of gas trapping, scorching, insufficient welding, bursting and the like of the plastic product in the performance test; when the high-temperature fluid plastic flows to the temperature sensing point, the mechanical sliding mechanism is triggered to drive the sealing insert pin to ascend to close the cavity, and the smooth completion of the injection molding process of the plastic product is ensured.

Description

Mould exhaust apparatus

Technical Field

The utility model relates to a fashioned technical field of plastic, more specifically relates to a mould exhaust apparatus.

Background

In the injection molding process, plastic raw materials need to flow into a cavity through a runner, and gas in the cavity is usually exhausted by using a parting surface, a thimble, an insert needle, exhaust steel, an insert and the like, but the method is only suitable for injection molds with small space of the inner wall of the cavity and less gas storage in the cavity; when the wall thickness of an injection molding product is thick, the space of a cavity of the injection mold is large, the gas storage amount in the cavity is large, the whole cavity of the existing mold is in a closed state, the exhaust method cannot realize the effect of rapid exhaust, so that the problems of gas trapping, scorching, insufficient welding and the like of the plastic product are caused, the phenomenon of bursting is easily generated during performance test, and the surface appearance, the molding quality and the molding qualification rate of the plastic product are seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a mould exhaust apparatus, adopt open die cavity to mould plastics plastic products, the die cavity is gaseous when not yet filling the time discharge die cavity, seals the plastic mold die cavity when high temperature plastics flow and fill whole die cavity soon, does benefit to the interior gas of die cavity and in time discharges fast, and does not influence plastic products's machine-shaping.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the mold exhaust device is applied to a mold structure; a cavity which can be communicated with the external environment is arranged in the mold structure, and a temperature sensing point is arranged at the bottom of the cavity; the exhaust device comprises a controller, a temperature sensing mechanism connected with the input end of the controller and a mechanical slide block mechanism connected with the output end of the controller, wherein the temperature sensing mechanism is in signal connection with a temperature sensing point; the die structure is internally provided with a guide hole communicated with the die cavity, and the guide hole is internally provided with a sealing insert pin which can rise under the action of a mechanical sliding block mechanism to seal the die cavity.

The utility model discloses a mould exhaust apparatus, high temperature fluid plastics flow and discharge the die cavity intracavity gas in the die cavity, when high temperature fluid plastics will be covered with soon and reach the temperature sensing point, temperature sensing mechanism carries the temperature that detects to the controller and carries out the analysis, if the signal trigger threshold value that the controller received, then controller control machinery slider mechanism motion, sealed mold insert rises to closed die cavity in the guide hole under mechanical slider mechanism effect. The utility model discloses an open die cavity injects plastic products, can realize in time exhausting fast, effectively avoids plastic products to be stranded gas, scorch, the butt fusion is not abundant, and influence the performance test and produce unqualified phenomenon such as bursting.

Further, the temperature sensing mechanism includes a fixed block, an infrared temperature sensor capable of emitting infrared rays and a temperature sensing via hole arranged inside the die structure, the fixed block is installed inside the die structure, the infrared temperature sensor is installed on the fixed block, and the infrared rays emitted by the infrared temperature sensor pass through the temperature sensing via hole to reach a temperature sensing point. When high-temperature fluid plastic flows to a temperature sensing point in the cavity, the infrared temperature sensor can acquire the temperature at the temperature sensing point and transmit a temperature signal to the controller, the controller analyzes whether the temperature is greater than a set trigger threshold value, and if so, the trigger condition of the mechanical slide block mechanism is met.

Further, machinery slider mechanism includes first actuating mechanism, locates the inside spout of mould structure and connects in the slider of first actuating mechanism output, the slider is connected in first actuating mechanism's output, the spout sets up with the slider cooperation, the slider is equipped with the inclined plane that drives the lift of sealed insert needle when moving. The first driving mechanism drives the sliding block to move in the sliding groove, and the sealing insert needle rises to the closed cavity in the guide hole due to the arrangement of the inclined surface of the sliding block during movement.

Further, first actuating mechanism is including the air supply, solenoid valve and the cylinder that connect in order, the solenoid valve is connected in the output of controller, the slider passes through the connector and connects in the output shaft of cylinder. When the signal obtained by the temperature sensing mechanism meets the triggering condition of the mechanical slide block mechanism, the controller controls the electromagnetic valve to be opened, the air source is communicated with the air cylinder, and the air cylinder can obtain pressure air from the air source to push out the output shaft.

Further, the cylinder is installed outside the mold structure through a fixing seat. The temperature sensing mechanism is installed with the die through the fixing block, the air cylinder is installed with the die through the fixing seat, the temperature sensing mechanism is simple and convenient to install, the mechanism is directly added on the basis of the existing injection die, the cost increase caused by replacement of die parts or re-opening of a new die is not needed, the production cost is effectively controlled, and better economic benefits can be obtained.

Furthermore, the slider has seted up T type groove along the inclined plane, the one end of sealing insert is equipped with the tip with T type groove complex. The end parts of the T-shaped groove and the sealing insert are matched, so that the relative motion between the sealing insert and the T-shaped groove is more stable.

Further, the periphery of the guide hole is provided with an insert, the insert is embedded in the interior of the mold structure and fixed above the sliding block, and the insert is externally connected with a dismounting rod. The arrangement of the disassembling rod is convenient for disassembling and maintaining the insert.

Compared with the prior art, the beneficial effects of the utility model are that:

the exhaust device of the utility model adopts the open type cavity to inject the plastic products, can realize timely and rapid exhaust, and effectively avoids the phenomena of gas trapping, scorching, insufficient welding, and cracking caused by influencing the performance test; when the high-temperature fluid plastic flows to a temperature sensing point, a mechanical sliding mechanism is triggered to drive the sealing insert pin to ascend to close the cavity, so that the smooth completion of the injection molding process of the plastic product is ensured;

the utility model discloses a mould structure can directly increase temperature sensing mechanism and mechanical slider mechanism on current injection mold's basis, avoids changing mould spare part or offers new mould again and the cost-push that causes to effective control cost gains better economic benefits.

Drawings

Fig. 1 is a schematic structural view of an exhaust device according to the present invention;

FIG. 2 is a schematic structural diagram of a temperature sensing mechanism of an exhaust device;

fig. 3 is a schematic structural diagram of a mechanical slider mechanism of the exhaust apparatus.

In the drawings: 100-an exhaust device; 110-a temperature sensing mechanism; 111-fixing blocks; 112-infrared temperature sensor; 113-temperature sensing vias; 120-mechanical slider mechanism; 121-a chute; 122-a slider; 123-inclined plane; 124-electromagnetic valve; 125-cylinder; 126-a fixed seat; 127-T type groove; 128-a connector; 200-a mold structure; 210-a mold cavity; 220-temperature sensing point; 230-a pilot hole; 231-an insert; 232-a dismounting rod; 240-sealing insert pins; 250-a mould frame.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Example one

Referring to fig. 1 to 3, an embodiment of an exhaust apparatus 100 according to the present invention is shown, in which the exhaust apparatus 100 of the present embodiment is applied to a mold structure 200; a cavity 210 which can be communicated with the external environment is arranged in the mold structure 200, and the bottom of the cavity 210 is provided with a temperature sensing point 220; the exhaust device 100 comprises a controller, a temperature sensing mechanism 110 connected to the input end of the controller, and a mechanical slider mechanism 120 connected to the output end of the controller, wherein the temperature sensing mechanism 110 is in signal connection with a temperature sensing point 220; the mold structure 200 is provided with a guide hole 230 communicating with the cavity 210, and the guide hole 230 is provided with a seal insert 240 capable of being lifted by the mechanical slider mechanism 120 to close the cavity 210.

In the implementation of this embodiment, the high-temperature plastic fluid flows in the cavity 210 and is discharged out of the gas in the cavity 210, when the high-temperature plastic fluid is about to be spread and reaches the temperature sensing point 220, the temperature sensing mechanism 110 transmits the detected temperature to the controller for analysis, and if the signal received by the controller triggers the threshold, the controller controls the mechanical slider mechanism 120 to move, and the sealing insert 231 rises in the guide hole 230 to close the cavity 210 under the action of the mechanical slider mechanism 120.

As shown in fig. 2, the temperature sensing mechanism 110 includes a fixing block 111, an infrared temperature sensor 112 capable of emitting infrared rays, and a temperature sensing through hole 113 formed in the mold structure 200, the fixing block 111 is installed in the mold structure 200, the infrared temperature sensor 112 is installed in the fixing block 111, and the infrared rays emitted by the infrared temperature sensor 112 pass through the temperature sensing through hole 113 to reach a temperature sensing point 220; when the high-temperature fluid plastic flows to the temperature sensing point 220 in the cavity 210, the infrared temperature sensor 112 can acquire the temperature at the temperature sensing point 220, transmit the temperature signal to the controller, and analyze whether the temperature is greater than the set trigger threshold value, if so, the trigger condition of the mechanical slider mechanism 120 is satisfied. The guide hole 230 in this embodiment is disposed to communicate with the temperature sensing through hole 113 for facilitating rapid discharge of the gas in the cavity 210, but the present invention is not limited thereto.

As shown in fig. 3, the mechanical sliding block mechanism 120 includes a first driving mechanism, a sliding groove 121 disposed inside the mold structure 200, and a sliding block 122 connected to an output end of the first driving mechanism, the sliding block 122 is connected to the output end of the first driving mechanism, the sliding groove 121 is disposed in cooperation with the sliding block 122, and the sliding block 122 is provided with an inclined surface 123 for driving the sealing insert pin 240 to move up and down; the first driving mechanism drives the sliding block 122 to move in the sliding slot 121, and simultaneously, the sealing insert 240 ascends to the closed cavity 210 in the guide hole 230 due to the inclined surface 123. The first driving mechanism comprises an air source, an electromagnetic valve 124 and an air cylinder 125 which are connected in sequence, the electromagnetic valve 124 is connected to the output end of the controller, and the slider 122 is connected to the output shaft of the air cylinder 125 through a connector 128; when the signal obtained by the temperature sensing mechanism 110 meets the triggering condition of the mechanical slider mechanism 120, the controller controls the electromagnetic valve 124 to open, the air source is communicated with the air cylinder 125, and the air cylinder 125 can obtain pressure air from the air source to push out the output shaft. Temperature sensing mechanism 110 passes through fixed block 111 and die holding in this embodiment, and cylinder 125 passes through fixing base 126 and die holding, and the simple installation directly increases above-mentioned mechanism on current injection mold's basis, need not to change mould spare part or set up new mould again and the cost-push that leads to, effective control manufacturing cost can obtain better economic benefits. In order to increase the stability of the relative movement between the sealing insert 231 and the slider 122, the slider 122 of the embodiment is provided with a T-shaped groove 127 along the inclined surface 123, and one end of the sealing insert 231 is provided with an end portion matched with the T-shaped groove 127; in order to facilitate the mounting and dismounting of the mechanical slider 122 structure, in this embodiment, an insert 231 is disposed on the periphery of the guide hole 230, the insert 231 is embedded in the mold structure 200 and fixed above the slider 122, and a dismounting rod 232 is connected to the outside of the insert 231.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A mold venting apparatus (100) for use with a mold structure (200); the mold is characterized in that a cavity (210) which can be communicated with the external environment is arranged in the mold structure (200), and a temperature sensing point (220) is arranged at the bottom of the cavity (210); the mould exhaust device (100) comprises a controller, a temperature sensing mechanism (110) connected to the input end of the controller and a mechanical slide block mechanism (120) connected to the output end of the controller, wherein the temperature sensing mechanism (110) is in signal connection with a temperature sensing point (220); the die structure (200) is internally provided with a guide hole (230) communicated with the die cavity (210), and the guide hole (230) is internally provided with a sealing insert pin (240) which can be lifted by the action of a mechanical sliding block mechanism (120) to seal the die cavity (210).

2. The mold vent apparatus (100) of claim 1, wherein the temperature sensing mechanism (110) comprises a fixing block (111), an infrared temperature sensor (112) capable of emitting infrared rays, and a temperature sensing through hole (113) formed in the mold structure (200), the fixing block (111) is mounted inside the mold structure (200), the infrared temperature sensor (112) is mounted on the fixing block (111), and the infrared rays emitted from the infrared temperature sensor (112) pass through the temperature sensing through hole (113) to reach the temperature sensing point (220).

3. The mold venting device (100) of claim 2, wherein the mechanical slider mechanism (120) comprises a first driving mechanism, a sliding groove (121) disposed inside the mold structure (200), and a slider (122) connected to an output end of the first driving mechanism, the slider (122) is connected to the output end of the first driving mechanism, the sliding groove (121) and the slider (122) are cooperatively disposed, and the slider (122) is provided with an inclined surface (123) for driving the seal insert pin (240) to move up and down.

4. The mold venting apparatus (100) of claim 3, wherein the first driving mechanism comprises a gas source, a solenoid valve (124) and a cylinder (125) connected in sequence, the solenoid valve (124) is connected to an output end of the controller, and the slider (122) is connected to an output shaft of the cylinder (125) through a connector.

5. The mold venting device (100) of claim 4, wherein the cylinder (125) is mounted to an exterior of the mold structure (200) by a mount (126).

6. The mold venting device (100) of claim 3, wherein the slide (122) defines a T-shaped groove (127) along the inclined surface (123), and one end of the sealing insert (231) defines an end that engages the T-shaped groove (127).

7. The mold venting device (100) of any one of claims 3 to 6, wherein an insert (231) is disposed on the periphery of the guide hole (230), the insert (231) is embedded in the mold structure (200) and fixed above the slide (122), and a removal rod (232) is connected to the outside of the insert (231).