CN215791403U

CN215791403U - Automatic tooth-disengaging mechanism

Info

Publication number: CN215791403U
Application number: CN202122075537.2U
Authority: CN
Inventors: 魏治中
Original assignee: Chengdu Fengyixin Plastic Mould Technology Co ltd
Current assignee: Chengdu Fengyixin Plastic Mould Technology Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-02-11
Anticipated expiration: 2031-08-30

Abstract

The utility model discloses an automatic tooth-disengaging mechanism, which comprises a driving mechanism, a transmission mechanism connected with the driving mechanism, a tooth-disengaging mechanism respectively connected with the transmission mechanism and a tooth-disengaging detection mechanism for detecting the motion state of the tooth-disengaging mechanism; the thread-off detection mechanism comprises a first thread bush and a second transmission shaft connected with the transmission mechanism, a thread section matched with the first thread bush is arranged at the front end of the second transmission shaft, and one side of the first thread bush, which is far away from the connection position of the transmission mechanism and the second transmission shaft, is fixed on an installation part sleeved on the second transmission shaft in a sliding manner; the induction component for detecting the movement position of the mounting part is arranged above one side of the mounting part, which is far away from the first threaded sleeve, so that the injection molding machine can automatically perform tooth withdrawing on a workpiece during injection molding, and cannot damage an injection molding part or cause blockage due to over rotation, thereby greatly improving the production efficiency.

Description

Automatic tooth-disengaging mechanism

Technical Field

The utility model relates to the field of injection molds, in particular to an automatic tooth stripping mechanism.

Background

The injection mold is a mold used in a plastic injection molding process, and has the advantages of wide adaptability, high production efficiency, easy realization of automatic production and the like, and is widely used for the production of various plastic products, so the injection mold plays a very important role in the plastic molding mold.

At present in injection mold's use, when being provided with the screw thread on a formed part, need use the screw thread core to shape the formed part, when the process of moulding plastics is accomplished, general mould can't follow the formed part in the mould, at this moment need artifical or the actuating mechanism of rotation type to demold the formed part, current rotation type actuating mechanism produces the card pause or can't normal operating easily because of rotating excessively in the operation process, and the work efficiency and the reliability of artifical tooth that takes off are lower, the cycle life of mould has been increased, and also be difficult to guarantee that the demolding process can not cause the damage to the screw thread of formed part.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides an automatic tooth-disengaging mechanism, which solves the problem that the existing injection molding part is not easy to disengage after being molded.

In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

the automatic tooth-removing device comprises a driving mechanism, a transmission mechanism connected with the driving mechanism, tooth-removing mechanisms respectively connected with the transmission mechanism, and a tooth-removing detection mechanism for detecting the motion state of the tooth-removing mechanisms;

the thread-off detection mechanism comprises a first thread bush and a second transmission shaft connected with the transmission mechanism, a thread section matched with the first thread bush is arranged at the front end of the second transmission shaft, and one side of the first thread bush, which is far away from the connection position of the transmission mechanism and the second transmission shaft, is fixed on an installation part sleeved on the second transmission shaft in a sliding manner;

an induction component for detecting the movement position of the mounting part is arranged above one side of the mounting part, which is far away from the first threaded sleeve; the induction part and the driving mechanism are electrically connected with a controller for controlling the motor to operate, so that the induction part can control the operation of the tooth-disengaging mechanism by controlling the rotation of the motor.

Furthermore, the mounting part comprises a mounting plate, a through hole in sliding fit with the second transmission shaft is formed in the mounting plate, and a built-in bearing with the inner diameter larger than that of the second transmission shaft at the mounting part is mounted in the through hole on the side, close to the first threaded sleeve, of the mounting plate; the first thread bush is fixed on an inner ring of the built-in bearing, so that the thread section can drive the mounting part to move axially in rotation, and friction cannot be generated between the thread section and the mounting plate.

Furthermore, the mounting plate comprises a box body and a cover plate fixedly connected with the box body, and through holes are formed in the corresponding positions of a bottom plate of the box body and the cover plate; the built-in bearing is arranged in the through hole on the cover plate, so that the built-in bearing is convenient to assemble and disassemble.

Further, the mounting panel is kept away from the upper surface fixed mounting of first thread bush and is had the lug with response part complex for response part can be through the position of lug response installation department.

Furthermore, the sensing part comprises a first stroke sensing switch and a second stroke sensing switch which are electrically connected with the controller, in the axial movement process of the mounting part, when the bump is in contact with the first stroke sensing switch/the second stroke sensing switch, the first stroke sensing switch/the second stroke sensing switch transmits corresponding signals to the controller, and the controller closes the driving mechanism, so that the problem that the thread section is blocked due to over rotation is solved.

Furthermore, the thread-disengaging mechanism comprises a second thread bush and a third transmission shaft connected with the transmission mechanism, and a thread section matched with the second thread bush is arranged at the front end of the third transmission shaft; when moulding plastics, remove the second thread bush to the neighbouring third transmission shaft free end of keeping away from, later mould the shaping product of taking the internal thread on the screw thread section, later drive the rotation of third transmission shaft through drive mechanism, drive the fashioned product through the removal of second thread bush and take off the tooth.

Furthermore, the driving mechanism comprises a motor fixedly connected to the motor seat, and a low-speed and high-torque hydraulic motor is selected, so that the working process of the tooth disengaging mechanism is more stable.

Furthermore, the transmission mechanism comprises a first transmission shaft, a first chain wheel and a second chain wheel which are respectively and fixedly connected to the output end of the motor and the first transmission shaft; a first gear is arranged on one side of the first transmission shaft, which is far away from the first chain wheel;

and a second gear and a third gear which are meshed with the first gear are arranged on the second transmission shaft and the third transmission shaft, and the first chain wheel and the second chain wheel are in transmission connection through a transmission chain, so that the tooth-disengaging detection mechanism can correctly detect the tooth-disengaging process.

The utility model has the beneficial effects that:

this scheme can stabilize the efficient and take off the tooth to the screw thread injection molding automatically to take off the tooth detection mechanism through setting up and detect the operating condition who takes off the tooth mechanism, guaranteed that take off the tooth mechanism can not cause the card because of rotatory excessively to pause, improved production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the box body of the present invention.

In the figure, 1, a motor, 2, a motor seat, 3, a first chain wheel, 4, a second chain wheel, 5, a transmission chain, 6, a first transmission shaft, 7, a first gear, 8, a second transmission shaft, 9, a second gear, 10, a mounting plate, 11, a first thread bush, 12, a cover plate, 13, a built-in bearing, 14, a box body, 15, a lug, 16, a third transmission shaft, 17, a third gear, 18, a through hole, 19, a second thread bush, 20, a first stroke inductive switch, 21 and a second stroke inductive switch.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the utility model as defined and defined in the appended claims, and all changes that come within the meaning and range of equivalency of the claims are to be embraced therein.

Referring to fig. 1 and 2, the automatic tooth-disengaging mechanism provided by the present solution comprises a driving mechanism, a transmission mechanism connected with the driving mechanism, a tooth-disengaging mechanism respectively connected with the transmission mechanism, and a tooth-disengaging detection mechanism for detecting a motion state of the tooth-disengaging mechanism; the driving mechanism comprises a motor 1 fixedly connected to the motor base 2, a low-speed hydraulic motor with large torque is selected, the working process of the tooth disengaging mechanism is more stable, and the motor type selected by the scheme is BMR-100.

The tooth-missing detection mechanism comprises a first threaded sleeve 11 and a second transmission shaft 8 connected with the transmission mechanism, a threaded section matched with the first threaded sleeve 11 is arranged at the front end of the second transmission shaft 8, and one side, far away from the connection part of the transmission mechanism and the second transmission shaft 8, of the first threaded sleeve 11 is fixed on an installation part sleeved on the second transmission shaft 8 in a sliding manner;

an induction component for detecting the movement position of the mounting part is arranged above one side of the mounting part, which is far away from the first threaded sleeve 11; the induction component and the driving mechanism are electrically connected with a controller for controlling the motor 1 to operate, so that the induction component can control the operation of the tooth-disengaging mechanism by controlling the rotation of the motor 1.

Referring to fig. 2, the mounting portion includes a mounting plate 10, a through hole 18 in sliding fit with the second transmission shaft 8 is formed in the mounting plate 10, and a built-in bearing 13 with an inner diameter larger than that of the second transmission shaft 8 at the mounting portion is mounted in the through hole at the side of the mounting plate 10 adjacent to the first thread bush 11; the first threaded sleeve 11 is fixed to the inner ring of the built-in bearing 13 so that the threaded section can rotate to drive the mounting portion to move axially without friction with the mounting plate 10.

In practice, the preferred mounting plate 10 of this embodiment includes a box 14 and a cover plate 12 fixedly connected to the box 14, and the built-in bearing 13 is disposed inside the cover plate 12 for facilitating the assembly and disassembly of the built-in bearing 13.

As shown in fig. 2, the mounting plate 10 is fixedly mounted with a protrusion 15, which is engaged with the sensing part, away from the upper surface of the first thread bushing 11, so that the sensing part can sense the position of the mounting part through the protrusion 15.

Referring to fig. 1 again, the sensing part includes a first stroke sensing switch 20 and a second stroke sensing switch 21 both electrically connected to the controller, and in the process of axial movement of the mounting portion, when the bump 15 contacts the first stroke sensing switch/the second stroke sensing switch, the first stroke sensing switch/the second stroke sensing switch closes the motor controller, so that the motor stops working, thereby preventing the problem of jamming caused by over-rotation of the thread section, and the models of the first stroke sensing switch and the second stroke sensing switch adopted in the scheme are WLCA 12-2.

During the implementation, the preferred tooth mechanism of taking off of this scheme includes second thread bush 19 and the third transmission shaft 16 of being connected with drive mechanism, and the front end of third transmission shaft 16 is provided with the screw thread section of 19 complex with second thread bush, when moulding plastics, moves second thread bush to the neighbouring third transmission shaft free end of keeping away from, later injection moulding takes internal screw thread product on the screw thread section, later drives the rotation of third transmission shaft through drive mechanism, and removal through second thread bush drives fashioned product and takes off the tooth.

In one embodiment of the present invention, the transmission mechanism comprises a first transmission shaft 6, and a first chain wheel 3 and a second chain wheel 4 fixedly connected to the output end of the motor 1 and the first transmission shaft 6 respectively; a first gear 7 is arranged on one side of the first transmission shaft 6 far away from the first chain wheel 3; second gear 9 and third gear 17 with first gear 7 meshing are all installed to second transmission shaft 6 and third transmission shaft 16 on, and first sprocket 3 and second sprocket 4 pass through drive chain 5 transmission and are connected for second transmission shaft 8 and third transmission shaft 16 can synchronous rotation, thereby make and take off tooth detection mechanism and can detect taking off the tooth process.

The use of this solution is described below with reference to fig. 1:

during injection molding, the second thread bush is moved to a position far away from the free end of the third transmission shaft, and then a product with internal threads is injection molded on the thread section. After the injection molding piece is molded on the thread section, the motor 1 is started to rotate through the controller, and the output end of the motor 1 drives the first transmission shaft 6 to rotate through the first chain wheel 3, the second chain wheel 4 and the transmission chain 5.

When rotating, the first gear 7 fixed on the first transmission shaft 6 can drive the second gear 9 and the third gear 17 which are meshed with the first gear to synchronously rotate, the second gear 9 and the third gear 17 respectively drive the thread sections on the second transmission shaft 8 and the third transmission shaft 16 to rotate, the second transmission shaft 8 pushes the mounting part sleeved on the second transmission shaft to displace in the rotating process, and the operation of the tooth-disengaging mechanism is monitored through the lug 15 which is arranged on the mounting plate and is positioned between the first stroke induction switch 20 and the second stroke induction switch 21.

The third rotating shaft 16 drives the injection molding piece to retreat through the second thread sleeve 19 in the rotating process until the injection molding piece falls off from the thread section, so that the automatic thread retreating process is completed, at this time, the lug 15 is in contact with the second stroke induction switch 21, the motor controller is closed and started, and the whole thread retreating mechanism stops working.

And finally, the controller controls the motor 1 to rotate reversely, when the lug 15 is contacted with the first stroke induction switch 20, the first stroke induction switch 20 transmits a signal to the controller, the controller turns off the motor, and the whole tooth stripping mechanism is restored to the initial position, so that a complete forming and tooth stripping process is completed.

In conclusion, the utility model solves the problems that the existing thread forming part is difficult to control in the process of tooth removal, is easy to clamp due to over rotation and is difficult to ensure the high efficiency and stability of the process of tooth removal, improves the production efficiency and has good application prospect.

Claims

1. An automatic tooth-disengaging mechanism is characterized by comprising a driving mechanism, a transmission mechanism connected with the driving mechanism, a tooth-disengaging mechanism respectively connected with the transmission mechanism and a tooth-disengaging detection mechanism for detecting the motion state of the tooth-disengaging mechanism;

the tooth-missing detection mechanism comprises a first threaded sleeve (11) and a second transmission shaft (8) connected with the transmission mechanism, a threaded section matched with the first threaded sleeve (11) is arranged at the front end of the second transmission shaft (8), and one side, away from the connection part of the transmission mechanism and the second transmission shaft (8), of the first threaded sleeve (11) is fixed on an installation part of the second transmission shaft (8) in a sliding sleeve mode;

an induction component for detecting the movement position of the mounting part is arranged above one side of the mounting part, which is far away from the first threaded sleeve (11); the induction component and the driving mechanism are electrically connected with the control.

2. The automatic thread-removing mechanism according to claim 1, wherein the mounting portion comprises a mounting plate (10), a through hole (18) which is in sliding fit with the second transmission shaft (8) is formed in the mounting plate (10), and a built-in bearing (13) with the inner diameter larger than that of the second transmission shaft (8) at the mounting portion is mounted in the through hole at the side of the mounting plate (10) adjacent to the first threaded sleeve (11); the first thread bush (11) is fixed on an inner ring of the built-in bearing (13).

3. The automatic tooth-disengaging mechanism according to claim 2, characterized in that the mounting plate (10) comprises a box body (14) and a cover plate (12) fixedly connected with the box body (14), and through holes are arranged at corresponding positions on a bottom plate of the box body (14) and the cover plate; the built-in bearing (13) is arranged in a through hole in the cover plate (12).

4. The automatic thread-stripping mechanism according to claim 2, characterized in that the mounting plate (10) is fixedly mounted with a projection (15) cooperating with said inductive component, on the upper surface remote from the first threaded sleeve (11).

5. The automatic tooth-disengaging mechanism according to claim 3, characterized in that said sensing means comprise a first travel-sensing switch (20) and a second travel-sensing switch (21), both electrically connected to the controller.

6. The automatic thread-removing mechanism according to claim 1, characterized in that it comprises a second threaded sleeve (19) and a third transmission shaft (16) connected to said transmission mechanism, the front end of said third transmission shaft (16) being provided with a threaded section cooperating with said second threaded sleeve (19).

7. Automatic tooth-disengaging mechanism according to claim 6, characterized in that said drive mechanism comprises a motor (1) fixedly connected to a motor seat (2).

8. The automatic tooth-disengaging mechanism according to claim 7, characterized in that said transmission mechanism comprises a first transmission shaft (6) and a first sprocket (3) and a second sprocket (4) fixedly connected to the output end of said motor (1) and to said first transmission shaft (6), respectively; a first gear (7) is arranged on one side, away from the first chain wheel (3), of the first transmission shaft (6);

the second transmission shaft (8) and the third transmission shaft (16) are respectively provided with a second gear (9) and a third gear (17) which are meshed with the first gear (7), and the first chain wheel (3) and the second chain wheel (4) are in transmission connection through a transmission chain (5).