Stroke control structure for injection molding machine
Technical Field
The invention relates to the technical field of injection molding machines, in particular to a stroke control structure for an injection molding machine.
Background
In the prior art, a hydraulic propulsion mechanism on an injection molding machine applies propulsion to a mold mechanism, namely, the movement of a movable mold is controlled, so that the work of pressurizing and injection molding of the mold is realized, and if the reaction force applied to the hydraulic mechanism by the mold mechanism is too large, the damage of a working unit mechanism on the injection molding machine can be caused.
If a stroke control structure is arranged between a die mechanism and a hydraulic propelling mechanism, when the pressure on a movable die is overlarge, the stroke control mechanism can interrupt transmission, so that the problem can be solved, and the stroke control structure for the injection molding machine is provided.
Disclosure of Invention
The present invention is directed to a stroke control structure for an injection molding machine, so as to solve the problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a stroke control structure for an injection molding machine comprises an outer barrel, a support plate, a first spring, an inner column and a pressure plate, wherein one end of the outer barrel is fixedly connected with the support plate, the other end of the outer barrel is contacted with the first spring, the inner column is arranged in the middle of the first spring, one end of the inner column extends into the outer barrel, the end part of the other end of the inner column is fixedly connected with the pressure plate, a control plate, a rubber bag and a second spring are arranged in an inner cavity of the outer barrel, the bottom surface of one side of the control plate is fixedly connected with the rubber bag, the bottom surface of the other side of the control plate is contacted with the second springs which are uniformly and annularly arranged, a guide rod is arranged in the middle of the second spring, one end of the guide rod extends into a cylindrical groove formed in the support plate, the bottom surface of one side of the rubber bag, which is far away from the control plate, is contacted with the inner column, the control plate is in a circular plate shape, a through hole is formed in the middle of the control plate, and an air valve is arranged in the through hole of the control plate, the middle ring of the control plate is provided with a plurality of gas tube cavities which are uniformly distributed, one end of each gas tube cavity is connected with the inner wall of the through hole of the control plate, the end part of the other end of each gas tube cavity is provided with a gas column, one end of each gas column is fixedly connected with a corrugated tube, one end of each corrugated tube, far away from each gas column, is fixedly connected with a positioning tube, the other end of each gas column is in contact with a control seat, one side of each control seat is in transmission connection with a clamping block, the control seats and the clamping blocks are arranged in square cavities formed in the control plate, the clamping blocks penetrate through square holes formed in the control plate, one end of each clamping block extends into a square plate groove formed in the inner wall of the outer tube, a central shaft penetrates through the control seats, one side of the central shaft is fixedly connected with an intercepting block, one end of the intercepting block is in contact with a spring piece, and the intercepting blocks and the spring pieces are arranged in the control seats.
Preferably, the air valve comprises an intercepting cylinder, a sealing ball, a third spring and a partition plate, the intercepting cylinder and the partition plate are fixed on the inner wall of the through hole of the control panel, the sealing ball and the third spring are arranged between the intercepting cylinder and the partition plate, one end of the third spring is in contact with the sealing ball, and the other end of the third spring is in contact with the partition plate.
Preferably, the partition plate is a circular plate, the plate body is provided with a plurality of uniformly distributed through holes in an annular mode, the intercepting cylinder is a cylinder, the edge of the inner wall of the cylinder body is in a round angle shape, the inner column is a cylinder, a plurality of uniformly distributed guide sliding blocks are arranged on the fixing ring on the side wall of the cylinder body, and the guide sliding blocks are arranged in prismatic sliding grooves formed in the inner wall of the outer cylinder.
Preferably, the control seat is in the shape of a cylinder, one side of the cylinder body is integrally connected with a prism, the middle of the cylinder of the control seat is movably sleeved with a central shaft, the end part of the central shaft is fixed on the inner wall of a square cavity of the control plate, the spring piece is in the shape of a wavy plate, and the intercepting block and the spring piece are arranged in an arc-shaped column groove formed in the inner wall of the cylinder of the control seat.
Preferably, the clamping block is in a square block shape, a plurality of tooth sockets which are uniformly distributed are formed in one side wall of the block body, a plurality of protruding teeth which are uniformly distributed are fixedly connected to the side wall of the cylinder of the control seat, and the control seat is in meshing transmission connection with the clamping block.
Preferably, the positioning cylinder is fixed on the inner wall of the gas tube cavity, the corrugated tube and the gas column are movably sleeved in the inner cavity of the gas tube cavity, the gas column is cylindrical, a protruding sliding block is fixedly connected to one side wall of the column body, and the protruding sliding block partially extends into a prismatic sliding groove formed in the inner wall of the gas tube cavity.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention realizes that the whole stroke control mechanism can generate certain deformation and is used for interrupting the pressure on the hydraulic propelling mechanism from being transmitted to the die, thereby avoiding the problem that the die bears over-strong pressure and having certain protection effect on the die processing mechanism on the injection molding machine;
2. the device is arranged outside through the gas in the rubber bag, and the circulation of qi pours into the bellows through the gas lumen, and then triggers a series of control transmission, realizes whole stroke control mechanism's regulation protection effect, has also realized stable air current control transmission effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a rubber bladder;
FIG. 3 is a schematic view of the control panel;
fig. 4 is a schematic structural view of the outer cylinder.
In the figure: the device comprises an outer cylinder 1, a support plate 2, a spring I3, an inner column 4, a pressure plate 5, a control plate 6, a rubber bag 7, a spring II 8, a guide rod 9, an air valve 10, an air pipe 11, an air column 12, a corrugated pipe 13, a positioning cylinder 14, a control seat 15, a clamping block 16, a central shaft 17, an interception block 18, a spring piece 19, an interception cylinder 20, a sealing ball 21, a spring III 22, a partition 23, a mold 24, a guide sliding block 25 and an air hole 26.
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 obtained by those skilled in the art without creative efforts based on the technical solutions of the present invention belong to the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: a stroke control structure for an injection molding machine comprises an outer barrel 1, a support plate 2, a first spring 3, an inner column 4 and a pressure plate 5, wherein one end of the outer barrel 1 is fixedly connected with the support plate 2, the other end of the outer barrel 1 is contacted with the first spring 3, the middle part of the first spring 3 is provided with the inner column 4, one end of the inner column 4 extends into the outer barrel 1, the end part of the other end of the inner column 4 is fixedly connected with the pressure plate 5, an inner cavity of the outer barrel 1 is internally provided with a control plate 6, a rubber bag 7 and a second spring 8, the bottom surface of one side of the control plate 6 is fixedly connected with the rubber bag 7, the bottom surface of the other side of the control plate 6 is contacted with a plurality of second springs 8 which are uniformly and annularly arranged, the middle part of the second spring 8 is provided with a guide rod 9, one end of the guide rod 9 extends into a cylindrical groove formed in the support plate 2, the bottom surface of one side of the rubber bag 7, which is far away from the control plate 6 is contacted with the inner column 4, the control plate 6 is in a circular plate shape, the control plate 6 is provided with a through hole in the middle part of the plate body, an air valve 10 is arranged in a through hole of a control plate 6, a plurality of air tube cavities 11 which are uniformly distributed are arranged in the middle ring of the control plate 6, one end of each air tube cavity 11 is connected with the inner wall of the through hole of the control plate 6, an air column 12 is arranged at the end part of the other end of each air tube cavity 11, a corrugated pipe 13 is fixedly connected at one end of each air column 12, a positioning cylinder 14 is fixedly connected at one end, far away from each air column 12, of each corrugated pipe 13, a control seat 15 is contacted with the other end of each air column 12, a clamping block 16 is connected at one side of each control seat 15 in a transmission manner, the control seat 15 and the clamping block 16 are arranged in a square cavity formed in the control plate 6, the clamping block 16 penetrates through a square hole formed in the control plate 6, one end of the clamping block 16 extends into a square plate groove formed in the inner wall of the outer barrel 1, a central shaft 17 penetrates through the control seat 15, a blocking block 18 is fixedly connected at one side of the central shaft 17, one end of the blocking block 18 is contacted with a spring piece 19, the blocking block 18 and the spring piece 19 are arranged in the control seat 15, referring to fig. 1, one side of a supporting disk 2 is connected with a movable mold on an injection molding machine in the prior art, and the movable mold is close to a static mold to complete shaping and pressurizing work, if the reaction force fed back from the movable mold is too large, the deformation of a control structure can be caused, because one end of a pressure disk 5 is a hydraulic propulsion mechanism providing propulsion power, the deformation of the whole control structure reduces the transmission effect of the propulsion power in a short time, and the protection of the mold is realized.
The air valve 10 comprises an intercepting cylinder 20, a sealing ball 21, a spring III 22 and a partition plate 23, the intercepting cylinder 20 and the partition plate 23 are fixed on the inner wall of a through hole of the control plate 6, the sealing ball 21 and the spring III 22 are arranged between the intercepting cylinder 20 and the partition plate 23, one end of the spring III 22 is in contact with the sealing ball 21, and the other end of the spring III 22 is in contact with the partition plate 23.
The baffle 23 shape is the plectane and the plate body is fitted with a contraceptive ring and is equipped with a plurality of evenly distributed's through-hole, and the inner wall edge that interception section of thick bamboo 20 shape is drum and barrel is the horn shape, and interior post 4 shape is the solid fixed ring and is equipped with a plurality of evenly distributed's guide slider 25 on cylinder and the cylinder lateral wall, and guide slider 25 sets up in the prismatic spout of seting up on the inner wall of urceolus 1.
The shape of the control seat 15 is a cylinder, one side of the cylinder body is integrally connected with a prism, the middle of the cylinder of the control seat 15 is movably sleeved with a central shaft 17, the end part of the central shaft 17 is fixed on the inner wall of a square cavity of the control plate 6, the spring piece 19 is in a wave plate shape, and the interception block 18 and the spring piece 19 are arranged in an arc-shaped column groove formed in the inner wall of the cylinder of the control seat 15.
The clamping block 16 is in a square block shape, a plurality of tooth sockets which are uniformly distributed are formed in one side wall of the block body, a plurality of protruding teeth which are uniformly distributed are fixedly connected to the side wall of the cylinder of the control seat 15, and the control seat 15 and the clamping block 16 are in meshed transmission connection.
A location section of thick bamboo 14 is fixed on the inner wall of gas tube chamber 11, and bellows 13 and gas column 12 activity cup joint in the inner chamber of gas tube chamber 11, and gas column 12 is cylindric and fixedly connected with protrusion slider on the lateral wall of cylinder, and protrusion slider part extends to in the prismatic spout of seting up on the inner wall of gas tube chamber 11.
The working principle is as follows: the pressure disc 5 moves to jack up the rubber bag 7, the gas in the rubber bag 7 is held back, because the spring three 22 rebounds to push the intercepting cylinder 20 and the sealing ball 21 to be in contact sealing, if the gas flow in the rubber bag 7 is discharged outwards, only the gas flow can gradually burst into the corrugated pipe 13 to force the corrugated pipe 13 to deform, the gas column 12 moves to jack up the control seat 15, the rotation process of the control seat 15 is pushed and inhibited by the rebounding of the gas valve 10, the spring leaf 19 provides pressure to ensure that the control seat 15 is fixed in the control panel 6, so that the control seat 15 controls the fixture block 16, the fixture block 16 is stably inserted into the outer cylinder 1 to realize synchronous fixing between the outer cylinder 1 and the control panel 6, the rubber bag 7 plays a role of a cushion block, the inner column 4 moves to realize control over the outer cylinder 1 through the transmission of the control panel 6 and the rubber bag 7, further the outer cylinder 1 moves to drive the supporting disc 2, then the control tool moves, if the reaction force on the mold is too large, and the propulsion effect of inner column 4 is unchanged, rubber bag 7 will be shrunken by the centre gripping, connect the gas in rubber bag 7 to pass through the outer portion of discharging of trachea chamber 11, air column 12 removes jack-up control holder 15, and then force fixture block 16 to remove to retract to control panel 6, no longer the screens is fixed between urceolus 1 and the control panel 6, and then pressure on the rubber bag 7 is used on control panel 6, control panel 6 slides in urceolus 1, and then transmission is interrupted in the short time, play certain protection to the mould, control advancing mechanism keeps away from pressure dish 5, 3 bounces of spring promote make pressure dish 5 resume initial position, inner column 4 reverse movement pulls rubber bag 7 this moment, rubber bag 7 is expanded fully gradually, two 8 bounces promote and make control panel 6 resume initial position, control seat 15 reverse rotation control fixture block 16 resumes the screens state.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.