CN215791369U

CN215791369U - Two board mould thimble return detection device mould plastics

Info

Publication number: CN215791369U
Application number: CN202121211987.3U
Authority: CN
Inventors: 谭伟华
Original assignee: Kunshan Weili Plastic Auto Parts Co ltd
Current assignee: Kunshan Weili Plastic Auto Parts Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-02-11
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses an injection molding two-plate mold thimble return detection device, which belongs to the technical field of injection molds and comprises a fixed mold base, wherein supporting plates are respectively arranged at the middle positions of two sides of the top of the fixed mold base, baffles are respectively arranged at the middle positions of two ends of the top of the fixed mold base, thimble return switches are respectively arranged at one side of two ends of the top of the fixed mold base, fixed plates are respectively arranged at the tops of the supporting plates and the baffles, and water gaps are respectively arranged at two sides of one end of each fixed plate. According to the utility model, before mold closing, the injection molding machine inevitably receives a signal sent by the thimble return switch, and simultaneously the injection molding machine can send an alarm, so that the aim of reminding workers to manually return the thimble is achieved, only when the intermediate plate simultaneously contacts the thimble return switches at two ends of the fixed mold bottom plate, the injection molding machine can close the alarm, and meanwhile, the injection molding machine can carry out mold closing operation, so that the problem that a mold is not pressed when the injection molding machine carries out mold closing is avoided.

Description

Two board mould thimble return detection device mould plastics

Technical Field

The utility model belongs to the technical field of injection molds, and particularly relates to an injection molding two-plate mold thimble return detection device.

Background

An injection molding machine, also known as an injection molding machine or an injection machine, is called a beer machine in many factories, and an injection molding product is called a beer piece, and is main molding equipment for manufacturing thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die.

The forming process of a common screw injection molding machine comprises the following steps: granular or powdery plastic is firstly added into a machine barrel, the plastic is made into a molten state through the rotation of a screw and the heating of the outer wall of the machine barrel, then a machine carries out die assembly and the forward movement of an injection seat, a nozzle is made to be attached to a sprue channel of a die, then pressure oil is introduced into an injection cylinder, the screw is made to advance, so that molten materials are injected into a closed die with lower temperature at a higher pressure and a higher speed, and after certain time and pressure maintenance (also called pressure maintenance) and cooling, the die is solidified and molded, then a product can be taken out through die opening (the pressure maintenance aims at preventing the reverse flow of the molten materials in a die cavity, supplementing the materials into the die cavity and ensuring that the product has certain density and dimensional tolerance). Plasticization is a prerequisite for achieving and ensuring the quality of the molded product, and in order to meet the molding requirements, sufficient pressure and speed must be ensured for injection. Meanwhile, because the injection pressure is high, correspondingly, high pressure is generated in the mold cavity (the average pressure in the mold cavity is generally between 20 and 45 MPa), and therefore, a sufficient mold clamping force is required, so that the injection device and the mold clamping device are key parts of the injection molding machine.

After the traditional injection molding machine carries out injection molding, a cooled product is ejected from a mold cavity through an ejector pin, the product cooled by a worker is collected, then a series of operations such as mold closing, injection molding and cooling solidification molding are carried out again, the ejector pin is easy to return to the position in the ejector pin in the series of operations, the injection molding machine starts to carry out the operations such as mold closing and injection molding, however, because the ejector pin does not return to the position, the phenomenon of mold pressing is easy to occur in the mold closing process, so that the product formed by cooling has defects, and meanwhile, the product solidified by cooling and the ejector pin are sticky, therefore, the detection of the ejector pin return is very important, if the ejector pin return is carried out manually, a person needs to pay attention to the condition of the ejector pin return for a long time, after all, the attention of the worker is limited, and the attention of the worker cannot be concentrated at all the time, so the method is not feasible, therefore, a thimble return detection structure is urgently needed at present.

Meanwhile, the traditional injection molding machine is not provided with a leakage-proof structure at the position of the cooling water nozzle, if the injection molding machine is subjected to mold closing operation, the cooling water nozzle leaks water, liquid can flow into the mold core through a gap between the fixed mold and the movable mold, bubbles can appear in a cooling solidified product, or the problem that the product is unqualified in molding and the like can appear, so that the material can be damaged, and the injection molding machine can rust to cause the damage of the injection molding machine.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the ejector pin return detection device for the injection molding two-plate mold aims to solve the problems that an original mold cannot confirm whether an ejector pin returns in place or not without using an ejector pin return switch to confirm signals, and the mold has the risk of pressing the mold.

In order to achieve the purpose, the utility model adopts the following technical scheme: including the cover half base, the backup pad is all installed to the intermediate position of cover half base top both sides, the baffle is all installed to the intermediate position at cover half base top both ends, thimble return switch is installed to one side at cover half base top both ends, the fixed plate is installed at the top of backup pad and baffle, the mouth of a river has been seted up to the both sides of fixed plate one end, the mouth of a river is kept away from the one end of fixed plate and is installed screw thread water injection well choke and water seal ring, the cover half guide post is all installed to four apex angle departments at fixed plate top, the movable mould guiding hole has been seted up at the both ends at fixed plate top, withstand voltage board is installed to the both sides at fixed plate top, mould benevolence is installed to the intermediate position at fixed plate top.

As a further description of the above technical solution:

the bottom of one side of one end of the baffle, which is far away from the water gap, is provided with a through hole, and the opening position of the through hole on the baffle is matched with the mounting position of the thimble return switch on the fixed die base.

As a further description of the above technical solution:

and one side of the two ends of the top of the fixed die base, which is far away from the water gap, is provided with a groove, and the size of the thimble return switch is matched with that of the groove on the fixed die base.

As a further description of the above technical solution:

and one end of the water seal ring close to the fixed plate is provided with a through hole, and the size of the through hole on the water seal end is matched with that of the water gap.

As a further description of the above technical solution:

the water gap is divided into a water inlet and a water outlet, and the water gap is communicated with the water pipe through a threaded water nozzle.

As a further description of the above technical solution:

the movable mould guiding holes are four and are symmetrically formed by the central line of the fixed plate.

In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. according to the utility model, the thimble return switch is arranged at the joint between the fixed die base and the baffle, and the return condition of the thimble is indirectly detected by detecting the position of the intermediate plate provided with the thimble, so that the aim of detecting the return of the thimble is achieved.

2. In the utility model, in order to avoid the return of one side of the intermediate plate, but not the other side, two ejector pin return switches are symmetrically arranged on the base of the fixed die, only when the intermediate plate simultaneously contacts the ejector pin return switches at the two ends of the bottom plate of the fixed die, the injection molding machine can close the alarm, and simultaneously the injection molding machine can carry out die closing operation, if the ejector pin does not return, the injection molding machine can not carry out die closing operation all the time, and the problem of pressing die can not occur when the injection molding machine carries out die closing.

3. According to the utility model, the sealing rings and the threaded water nozzles are arranged at the water inlet and the water outlet of the device and are communicated with the water pipe through threads, when the water leakage of the water inlet occurs, leaked water can be caught by the water sealing rings, so that the leaked water flow cannot occur everywhere, and meanwhile, the leaked water cannot flow into the die core through a gap between the fixed die and the movable die, so that the problem that the product is not molded due to the defects of bubbles and the like of a product which is cooled and solidified is avoided.

Drawings

FIG. 1 is a schematic structural view of an ejector pin return detection device for two injection molding plates according to the present invention;

FIG. 2 is a schematic side view of a thimble return detecting device for two injection molds according to the present invention;

FIG. 3 is a schematic top view of a device for detecting the needle return of an injection mold with two plates according to the present invention;

FIG. 4 is an enlarged schematic view of a structure at the position A in FIG. 2 of the ejector pin return detection device for two-plate injection molding provided by the present invention;

fig. 5 is an enlarged schematic view of a structure at a position B in fig. 3 of the ejector pin return detection device for two-plate injection molding provided by the utility model.

Illustration of the drawings:

1. a fixed die base; 2. a support plate; 3. a baffle plate; 4. a thimble return switch; 5. a fixing plate; 6. a water gap; 7. sealing a ring with water; 8. fixing a die guide post; 9. a movable die guide hole; 10. a pressure-resistant plate; 11. a threaded water nozzle; 12. and a mold core.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a thimble return detection device for an injection molding two-plate mold comprises a fixed mold base 1, wherein supporting plates 2 are respectively arranged at the middle positions of two sides of the top of the fixed mold base 1, baffles 3 are respectively arranged at the middle positions of two ends of the top of the fixed mold base 1, thimble return switches 4 are respectively arranged at one side of two ends of the top of the fixed mold base 1, a fixed plate 5 is respectively arranged at the tops of the supporting plates 2 and the baffles 3, water gaps 6 are respectively arranged at two sides of one end of the fixed plate 5, a threaded water nozzle 11 and a water seal ring 7 are respectively arranged at one end of each water gap 6 far away from the fixed plate 5, fixed mold guide posts 8 are respectively arranged at four top corners of the top of the fixed plate 5, the guide posts 8 are used for ensuring the accurate positioning of a movable mold and a fixed mold when the mold is closed and sometimes used for ensuring the flexible and stable operation of a demolding mechanism, movable mold guide holes 9 are arranged at two ends of the top of the fixed plate 5, and pressure-resisting plates 10 are respectively arranged at two sides of the top of the fixed plate 5, a die core 12 is arranged in the middle of the top of the fixed plate 5.

In this embodiment: the bottom of one side of the baffle 3, which is far away from the water gap 6, is provided with a through hole, the through hole on the baffle 3 is provided with a position matched with the mounting position of the thimble return switch 4 on the fixed die base 1, and the detection contact structure of the thimble return switch 4 extends to the inside of the die through the through hole on the baffle 3, so that the detection contact structure of the thimble return switch 4 can be contacted with the middle plate provided with the thimble, thereby achieving the purpose of detecting whether the thimble returns.

In this embodiment: one side of the two ends of the top of the fixed die base 1, which are far away from the water gap 6, is provided with a groove, the size of the thimble return switch 4 is matched with the size of the groove on the fixed die base 1, the thimble return switch 4 is installed in the groove on the fixed die base 1 through a bolt, and meanwhile, the thimble return switch 4 is stably and firmly installed on the fixed die base 1 through the groove and the bolt on the fixed die base 1.

In this embodiment: the through hole has been seted up to the one end that water seal circle 7 is close to fixed plate 5, and the through hole size on the water seal end 7 and the size looks adaptation of mouth of a river 6 reach through the through hole on the water seal circle 7 and stably firmly install the purpose on mouth of a river 6 with water seal circle 7.

In this embodiment: the mouth of a river 6 divide into water inlet and delivery port, mouth of a river 6 is linked together with the water pipe through screw water injection well choke 11, screw thread and water pipe threaded connection on through screw water injection well choke 11, the leakproofness has been improved, the purpose that 6 water leakage in mouth of a river appears in further avoiding, when 6 water leakage appears in the mouth of a river simultaneously, the water that spills can catch through water seal circle 7, can not appear all everywhere of the rivers that spill, simultaneously can not appear the water that spills and flow into mould benevolence 12 through the gap between cover half and the movable mould in, the flaw such as bubble appears in the goods that cause the cooling solidification causes the unqualified problem of goods shaping, and when the water that spills fills up water seal circle 7, the time of staff's reaction has been given, the injection molding machine that can be timely closed.

In this embodiment: the movable mould guiding holes 9 are four, the four movable mould guiding holes 9 are symmetrically formed by the central line of the fixed plate 5, the purpose of the movable mould guiding holes 9 is the same as that of the fixed mould guiding column 8, the movable mould guiding holes are used for ensuring the accurate positioning of the movable mould and the fixed mould of the mould when the mould is closed, and meanwhile, the flexible and stable operation of the demoulding mechanism is also ensured.

The working principle is as follows: because the thimble return switches 4 are connected and communicated with the injection molding machine, when the thimble does not return, the intermediate plate provided with the thimble does not contact with the thimble return switch 4, and simultaneously, in order to avoid that one side of the intermediate plate returns but the other side does not return, two thimble return switches 4 are symmetrically arranged on the fixed die base 1, before die assembly, the injection molding machine inevitably receives a signal given by the thimble return switches 4, and simultaneously sends an alarm by the injection molding machine, thereby achieving the purpose of reminding workers to manually return the thimble, only when the intermediate plate simultaneously contacts the thimble return switches 4 at two ends of the fixed die base plate, the alarm can be closed, and simultaneously, the injection molding machine can carry out die assembly operation, if the thimble does not return, the injection molding machine can not carry out die assembly operation all the time, and the problem of die assembly of the injection molding machine can not occur when die assembly is carried out, the staff passes through the threaded connection water pipe on the screw water injection well choke 11, because install water seal ring 7 on mouth of a river 6, can catch through water seal ring 7, can not appear leaking rivers all everywhere, simultaneously can not appear leaking in the gap flow that advances mould benevolence 12 between water through the cover half and the movable mould, the flaw such as bubble appears in the goods that cause the cooling solidification causes the unqualified problem of goods shaping, simultaneously when water seal ring 7 is filled up to the water that spills, the time of staff's reaction has been given, can be timely close the injection molding machine and call the people to maintain.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides an injection molding two-plate mold thimble return detection device, includes cover half base (1), its characterized in that, backup pad (2) are all installed to the intermediate position of cover half base (1) top both sides, baffle (3) are all installed to the intermediate position at cover half base (1) top both ends, thimble return switch (4) are installed to one side at cover half base (1) top both ends, fixed plate (5) are installed at the top of backup pad (2) and baffle (3), mouth of a river (6) have been seted up to the both sides of fixed plate (5) one end, threaded water injection well choke (11) and water seal circle (7) are installed to the one end that mouth of a river (6) kept away from fixed plate (5), cover half guide post (8) are all installed to four apex angle departments at fixed plate (5) top, movable mould guiding hole (9) have been seted up to the both ends at fixed plate (5) top, the two sides of the top of the fixing plate (5) are provided with pressure-resistant plates (10), and the middle of the top of the fixing plate (5) is provided with a mold core (12).

2. The ejector pin return detection device for the injection molding two-plate mold is characterized in that a through hole is formed in the bottom of one side, away from the water gap (6), of one end of the baffle plate (3), and the through hole in the baffle plate (3) is matched with the installation position of an ejector pin return switch (4) in the fixed mold base (1).

3. An injection molding two-plate mold ejector pin return detection device according to claim 1, wherein a groove is formed in one side, away from the water gap (6), of each of two ends of the top of the fixed mold base (1), and the size of the ejector pin return switch (4) is matched with the size of the groove in the fixed mold base (1).

4. The device for detecting the thimble return of the injection molding two-plate mold according to claim 1, wherein a through hole is formed at one end of the water seal ring (7) close to the fixing plate (5), and the size of the through hole on the water seal ring (7) is matched with that of the water gap (6).

5. The device for detecting the thimble return of the injection molding two-plate mold according to claim 1, wherein the water port (6) is divided into a water inlet and a water outlet, and the water port (6) is communicated with a water pipe through a threaded water nozzle (11).

6. The ejector pin return detection device for the injection molding two-plate mold according to claim 1, wherein the movable mold guide holes (9) are four and four movable mold guide holes (9) symmetrically arranged with respect to a center line of the fixed plate (5).