CN211074599U

CN211074599U - Safe limiting protection mechanism for mold closing of injection molding machine

Info

Publication number: CN211074599U
Application number: CN201921805600.XU
Authority: CN
Inventors: 苏兰生
Original assignee: Wuxi Landan Machinery Co ltd
Current assignee: Wuxi Landan Machinery Co ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-07-24
Anticipated expiration: 2029-10-25

Abstract

The utility model relates to an injection molding machine technical field, concretely relates to injection molding machine compound die safety limit protection mechanism, including first board, movable mould, fixed block, sliding shaft, ear piece, flange seat, spout, slider, gag lever post, draw-in groove, electro-magnet, elastic component. The utility model has the advantages that: when the die closing action begins, the movable die is driven by an external device to move towards the head plate, die closing is carried out, at the moment, if the machine door is opened, a travel switch arranged on the machine door generates a signal, the signal is transmitted to an external controller, the power supply of an electromagnet is controlled to be disconnected by the external controller, at the moment, the elastic piece supports against the lug block to move, a driving sliding block penetrates into the lug block, the limiting rod is further clamped into a clamping groove of a sliding shaft, the sliding shaft is prevented from moving, the movable die cannot move, safety protection in the die closing process is achieved, even after the die closing is started, due to the fact that a plurality of clamping grooves are formed in the sliding shaft, the protective effect is still achieved.

Description

Safe limiting protection mechanism for mold closing of injection molding machine

Technical Field

The utility model relates to an injection molding machine technical field, concretely relates to injection molding machine compound die safety limit protection mechanism.

Background

Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. The injection molding can be classified into injection molding and die casting.

An injection molding machine (an injection machine or an injection molding machine for short) is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, and the injection molding is realized by the injection molding machine and the die.

When the movable mould and the head plate on the injection molding machine carry out mould closing action, the machine door needs to be ensured to be closed, and personnel are prevented from entering the injection molding machine by mistake, so that great potential safety hazards are caused.

In view of this, chinese patent No. CN201420353913.7 discloses a pneumatic mold closing safety device of an injection molding machine, which is characterized in that: the electromagnetic valve is connected with a rodless cavity of the cylinder, the flashboard is opposite to the safety rod, and a flashboard limiting nail is arranged on the flashboard close to the end of the cylinder. The utility model provides a safety door at the injection molding machine does not close can prevent injection molding machine compound die action, the pneumatic compound die safeties of injection molding machine that the security performance is good, the reliability is high.

Open the quick-witted door through travel switch in the above-mentioned scheme and detect, when the machine door is in opening, the cylinder action, drive the flashboard and support the bumper bar, when avoiding the compound die, personnel mistake pulling machine door gets into in the injection molding machine, cause the potential safety hazard, but in the above-mentioned scheme, if the injection molding machine is started at the compound die process, and the bumper bar has passed behind the flashboard, just can't protect, personnel mistake gets into in the injection molding machine this moment after, can not protect, perhaps the protecting effect is relatively poor, consequently still have the improvement space.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide an injection molding machine compound die safety spacing protection mechanism, it can realize carrying out the block through gag lever post and epaxial draw-in groove of slide, blocks the removal of slide to make first board and the unable compound die of accomplishing of movable mould, improved factor of safety to a certain extent at least.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:

a safety limiting protection mechanism for die assembly of an injection molding machine comprises a head plate and a movable die on the injection molding machine, wherein fixed blocks are respectively arranged on the outer walls of two transversely opposite ends of the movable die, a sliding shaft is horizontally and fixedly connected onto each fixed block, an ear block corresponding to each fixed block is arranged on the head plate, each sliding shaft is slidably matched with and penetrates through each ear block, a flange seat is arranged on each ear block, a through hole type sliding groove is coaxially arranged on each flange seat, a sliding block made of a magnetic material is slidably matched and clamped in each sliding groove, a limiting rod is fixedly connected onto each sliding block and slidably matched with and penetrates into each ear block, one end of each limiting rod penetrating into each ear block is of a wedge block structure, the inclined surface of each limiting rod faces away from the direction of the movable die, a clamping groove for clamping one end of each limiting rod penetrating into each ear block is arranged on each corresponding sliding shaft, the longitudinal section of each clamping groove is in a right trapezoid shape, an electromagnet is embedded in a sliding groove of the flange seat, the electromagnet corresponds to the sliding block, an elastic piece is arranged between the electromagnet and the sliding block, and the elastic piece abuts against the sliding block to drive the sliding block to move in the direction away from the electromagnet.

Furthermore, a graphite bushing is embedded in the lug block, the sliding shaft is arranged in the graphite bushing in a sliding fit mode, and a clearance groove for the limiting rod to freely pass through is formed in the sliding shaft.

Furthermore, the elastic part is a spring, the spring is arranged in the sliding groove, and two ends of the spring in the elastic direction respectively abut against the electromagnet and the sliding block.

Further, the slider and the limiting rod are of an integrated structure.

Furthermore, the cross section of the limiting rod is rectangular.

The utility model has the advantages that: when the die closing action starts, the movable die is driven by an external device to move towards the head plate, die closing is carried out, at the moment, if the machine door is opened, a travel switch arranged on the machine door generates a signal and transmits the signal to an external controller, the external controller controls the power supply of an electromagnet to be disconnected, at the moment, the elastic piece supports against the lug block to move, the slide block is driven to move towards the lug block, the limiting rod penetrates into the lug block, the limiting rod is further clamped into the clamping groove of the sliding shaft, the sliding shaft is prevented from moving, the movable die cannot move, safety protection in the die closing process is achieved, even after die closing is started, due to the fact that the sliding shaft is provided with the clamping grooves, the protective effect is still achieved, compared with the prior art, the safety protection effect is improved to at least a certain degree.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic bottom view of the three-dimensional structure of FIG. 1;

FIG. 3 is an exploded view of the perspective structure of FIG. 2;

the reference numerals are explained below:

1-head plate, 2-moving die, 3-fixed block, 4-sliding shaft, 5-lug block, 6-flange seat, 7-sliding groove, 8-sliding block, 9-limiting rod, 10-clamping groove, 11-electromagnet, 12-graphite bushing, 13-clearance groove and 14-spring.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-3, the safety limiting protection mechanism for mold closing of an injection molding machine comprises a head plate 1 and a movable mold 2 on the injection molding machine, wherein a travel switch is arranged at a machine door of the injection molding machine and used for detecting the opening state of the machine door, and the travel switch is electrically connected with an external controller, namely, when the machine door of the injection molding machine is opened, the travel switch is induced by the prior art to generate an induction signal and transmit the induction signal to the external controller, the outer walls of two transversely opposite ends of the movable mold 2 are respectively provided with a fixed block 3, the fixed block 3 is horizontally and fixedly connected with a sliding shaft 4, the head plate 1 is provided with an ear block 5 corresponding to the fixed block 3, the sliding shaft 4 is slidably matched with the ear block 5, the ear block 5 is provided with a flange seat 6, the flange seat 6 is coaxially provided with a through hole type chute 7, and a sliding block 8 made of a magnetic conductive material is slidably matched and, the slider 8 is fixedly connected with a limiting rod 9, the limiting rod 9 is slidably arranged in the lug 5, further, a graphite bushing 12 is embedded in the lug 5, the sliding shaft 4 is slidably arranged in the graphite bushing 12, a clearance groove 13 for the limiting rod 9 to freely pass through is formed in the sliding shaft 4, the graphite bushing 12 has self-lubricating property, so that the sliding shaft 4 has small mechanical wear loss in the long-term use process, the position rod 9 penetrates into the lug 5, one end of the position rod 9 is of a wedge block structure, the inclined plane of the position rod is far away from the movable die 2, a clamping groove 10 for clamping the limiting rod 9 penetrating into one end of the lug 5 is correspondingly formed in the sliding shaft 4, of course, the slider 8 and the limiting rod 9 can be of an integrated structure, so that the installation of the limiting rod 9 is convenient, the rigidity of the limiting rod 9 is improved, further, the cross section of the limiting rod 9 is rectangular, and the self-rotation of the limiting rod 9 is avoided, influence the block of gag lever post 9 and draw-in groove 10, draw-in groove 10 vertical section becomes right trapezoid, right trapezoid bottom opening, and the inclined plane orientation movable mould 2, its edge 4 length direction arrays of sliding shaft are equipped with a plurality ofly, the embedded electro-magnet 11 that is equipped with of spout 7 of flange seat 6, electro-magnet 11 corresponds the setting with slider 8, its with be equipped with a spring 14 between the slider 8, spring 14 locates in the spout 7, and its elasticity direction both ends support respectively electro-magnet 11, slider 8, spring 14 supports slider 8, the drive slider 8 is towards keeping away from the removal of electro-magnet 11 direction.

The utility model discloses when using: when the mold closing action is started, the movable mold is driven by a driving device on the injection molding machine to move towards the head plate to perform mold closing action, at the moment, if a worker mistakenly opens the machine door, a travel switch arranged at the machine door generates a sensing signal and transmits the sensing signal to an external controller, the external controller controls an external power supply to cut off the external power supply to electrify the electromagnet, so that the electromagnet is powered off, the electromagnet loses magnetism after the power failure, at the moment, the sliding block is propped down by the spring to move towards the direction of the lug block, the limiting rod penetrates through the clearance groove of the graphite bushing and is clamped into one of the clamping grooves of the sliding shaft (possibly, the limiting rod can be clamped into the clamping groove after the sliding shaft still needs to move for a very short distance, but the very short distance does not influence safety protection), because the inclined plane on the limiting rod faces the direction away from the movable mold, and the inclined plane of the clamping, consequently, straight section on the gag lever post will laminate with straight section inner wall on the draw-in groove, prevent the sliding shaft to continue to move towards the head board, make the movable mould be in quiescent condition, the workman that the mistake stretched into the injection molding machine with the health at this moment will be protected, and prior art relatively, because sliding shaft symmetry sets up in the relative both sides of movable mould, the resistance that consequently the movable mould receives is bigger, and is more even, can prevent the movable mould to continue to move, can avoid the movable mould to produce the slope again, influences the compound die precision.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A safe limiting protection mechanism for die assembly of an injection molding machine comprises a head plate (1) and a movable die (2) on the injection molding machine, and is characterized in that the outer walls of two transversely opposite ends of the movable die (2) are respectively provided with a fixed block (3), the fixed block (3) is horizontally and fixedly connected with a sliding shaft (4), the head plate (1) is provided with an ear block (5) corresponding to the fixed block (3), the sliding shaft (4) is slidably matched with the ear block (5), the ear block (5) is provided with a flange seat (6), the flange seat (6) is coaxially provided with a through hole type sliding groove (7), the sliding groove (7) is internally slidably matched with a sliding block (8) made of a magnetic conduction material, the sliding block (8) is fixedly connected with a limiting rod (9), the limiting rod (9) is slidably matched with the ear block (5), and one end of the limiting rod (9) is of a wedge block structure, and its inclined plane orientation is kept away from movable mould (2) direction, correspond be equipped with on sliding shaft (4) and supply draw-in groove (10) that gag lever post (9) penetrated into ear piece (5) one end block, draw-in groove (10) vertical section becomes right trapezoid, and the inclined plane orientation movable mould (2), its edge sliding shaft (4) length direction array is equipped with a plurality ofly, spout (7) of flange seat (6) are embedded to be equipped with electro-magnet (11), electro-magnet (11) correspond with slider (8) and set up, its with be equipped with an elastic component between slider (8), the elastic component supports top slider (8), drives slider (8) are towards keeping away from electro-magnet (11) direction and are removed.

2. The safety limiting and protecting mechanism for the closing die of the injection molding machine as claimed in claim 1, wherein a graphite bushing (12) is embedded in the lug block (5), the sliding shaft (4) is slidably arranged in the graphite bushing (12), and a clearance groove (13) for the limiting rod (9) to freely pass through is formed in the sliding shaft (4).

3. The safety limiting and protecting mechanism for the closing of the injection molding machine according to claim 1, wherein the elastic member is a spring (14), the spring (14) is arranged in the chute (7), and two ends of the spring in the elastic direction respectively abut against the electromagnet (11) and the sliding block (8).

4. The safety limit protection mechanism for the closing of the injection molding machine according to claim 1, wherein the slide block (8) and the limit rod (9) are of an integrated structure.

5. The safety limit protection mechanism for the closing of the injection molding machine according to claim 1, wherein the cross section of the limit rod (9) is rectangular.