CN210161566U - Buffering brake mechanism of electric injection molding machine - Google Patents
Buffering brake mechanism of electric injection molding machine Download PDFInfo
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- CN210161566U CN210161566U CN201920561310.9U CN201920561310U CN210161566U CN 210161566 U CN210161566 U CN 210161566U CN 201920561310 U CN201920561310 U CN 201920561310U CN 210161566 U CN210161566 U CN 210161566U
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Abstract
The utility model provides a buffering brake mechanism of an electric injection molding machine, which comprises a servo motor, a fixing device, a connecting seat, a buffering brake device and a transmission mechanism; the transmission mechanism comprises a first belt wheel, a second belt wheel and a transmission belt, and the first belt wheel is connected with the second belt wheel through the transmission belt; the servo motor and the connecting seat are respectively fixed on the fixing device, and the buffering brake device is fixed on the connecting seat through screws; the servo motor is provided with an output shaft, and the output shaft penetrates through the fixing device and is connected with the inner ring of the buffering brake device through a flat key; the first belt wheel is sleeved on the output shaft, the second belt wheel is provided with a screw rod, the screw rod is provided with a nut, and the screw rod is connected with a moving part of the electric injection molding machine through the nut. This scheme sets up buffering arresting gear through output shaft one side at servo motor, solves the problem that electric injection molding machine's power unit does not possess hydraulic buffer capacity, prevents that servo motor from bringing the damage for electric injection molding machine's moving part under the out of control condition.
Description
Technical Field
The utility model relates to an electric injection molding machine technical field especially relates to a buffering brake mechanism of electric injection molding machine.
Background
The existing electric injection molding machine is different from a hydraulic injection molding machine, the injection power of the electric injection molding machine is output by a servo motor controlled by a driver, a power mechanism of the low-friction servo motor does not have the hydraulic buffering capacity, in some rare cases, the motor has no power output at all or the motor has no power output because the emergency cut-off action is taken after the power output of the motor cannot be controlled, when the electric injection molding machine is in the working states of injection action, pressure maintaining action and the like, the motor loses power completely and can damage or influence the moving parts of the electric injection molding machine, for example, when the motor is cut off suddenly and loses power, the pre-plastic seat of the electric injection molding machine rebounds to impact the tail part, so a buffer mechanism is needed for buffering, when the motor loses power, the moving parts of the electric injection molding machine are buffered to stop moving, so that the risk caused by the out-of-control motor is prevented.
Chinese patent publication No. CN203611442U discloses a fast stop protection system for a fully electric injection molding machine, which includes a servo controller, a contactor, and a motor electrically connected to the servo controller, where the servo controller includes a capacitor and a brake control terminal for controlling braking of the motor, the contactor includes a main contact electrically connected to the power supply and the servo controller, respectively, and an auxiliary contact electrically connected to the brake control terminal and a control signal power supply, respectively, where the brake control terminal is used to brake the motor when the main contact is disconnected. Above-mentioned scheme is when unexpected losing power, is the in-process through the motor at quick speed reduction by the power state conversion for the power generation state, provides the power for servo controller can not be in the state of losing power, thereby guarantees to offset the load torque of motor, just can not destroy the machinery production of full-electric injection molding machine, guarantees entire system's reliability and stability. According to the scheme, the braking buffer device is arranged, and stable braking torque is output through the braking buffer device, so that the moving part of the electric injection molding machine stops moving, the buffering effect is achieved, and the technical scheme is completely different from the technical scheme.
Disclosure of Invention
The to-be-solved technical problem aim at provides a buffering brake mechanism of electric injection molding machine for solve current electric injection molding machine and when the motor loses power suddenly, damage electric injection molding machine's moving part's problem.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a cushion brake mechanism of an electric injection molding machine comprises: the device comprises a servo motor, a fixing device, a connecting seat, a buffering brake device and a transmission assembly;
the transmission assembly comprises a first belt wheel, a second belt wheel and a transmission belt, and the first belt wheel is connected with the second belt wheel through the transmission belt;
the servo motor and the connecting seat are respectively fixed on the fixing device, and the buffer braking device is fixed on the connecting seat through screws;
the servo motor is provided with an output shaft, and the output shaft penetrates through the fixing device and is connected with the buffering brake device through a flat key;
the first belt wheel is sleeved on the output shaft, the second belt wheel is provided with a screw rod, the screw rod is provided with a nut, and the screw rod is connected with a moving part of the electric injection molding machine through the nut.
Preferably, the buffering brake device is a band-type brake.
Preferably, the buffering brake device is an electromagnetic band-type brake.
Preferably, the connecting seat is prism-shaped, the first pulley is arranged in the connecting seat, and through holes for the transmission belt to pass through are formed in two side faces of the connecting seat.
Preferably, the fixing device is a flange plate, the flange plate is square, the servo motor is arranged on one side of the flange plate, and the connecting seat, the buffering brake device and the transmission assembly are arranged on the other side of the flange plate.
Preferably, the servo motor and the buffer brake device are respectively electrically connected with a driver, and the switches of the servo motor and the buffer brake device are controlled by the driver.
Preferably, the second belt pulley and the first belt pulley are located on the same vertical plane, and the second belt pulley is located below the first belt pulley.
Preferably, the diameter of the second pulley is larger than the diameter of the first pulley.
Adopt the utility model discloses, through setting up buffering arresting gear, under the condition that servo driver proruption power failure accident or servo motor power promptly cut off, can export stable braking moment of torsion, cushion the braking to electric injection molding machine's moving part, make machine stop motion, prevent that the motor from losing power suddenly and producing the destruction to electric injection molding machine's moving part. And through setting up independent buffering arresting gear, occupation space is little, and it is also very convenient to maintain the repacking, has higher adaptability simultaneously, can adapt to the electric injection molding machine of different models, and it is more convenient to use.
Drawings
Fig. 1 is a schematic structural view of a buffering brake mechanism of an electric injection molding machine according to an embodiment of the present invention;
fig. 2 is a schematic view of an internal structure of a buffering brake mechanism according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a cushion brake mechanism according to an embodiment of the present invention;
the device comprises a servo motor-1, an output shaft-11, a connecting seat-2, a through hole-21, a buffering brake device-3, a fixing device-4, a transmission component-5, a transmission belt-50, a first belt wheel-51 and a second belt wheel-52.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
Referring to fig. 1 to 3, the embodiment provides a buffering brake mechanism of an electric injection molding machine, which includes a servo motor 1, a fixing device 4, a connecting seat 2, a buffering brake device 3 and a transmission assembly 5;
the transmission assembly 5 comprises a first belt wheel 51, a second belt wheel 52 and a transmission belt 50, wherein the first belt wheel 51 is connected with the second belt wheel 52 through the transmission belt 50;
the servo motor 1 and the connecting seat 2 are respectively fixed on the fixing device 4, and the buffer braking device 3 is fixed on the connecting seat 2 through screws;
the servo motor 1 is provided with an output shaft 11, and the output shaft 11 penetrates through the fixing device 4 and is connected with the inner ring of the buffering brake device 3 through a flat key;
the first belt wheel 51 is sleeved on the output shaft 11, the second belt wheel 52 is provided with a screw rod, the screw rod is provided with a nut, and the screw rod is connected with a moving part of the electric injection molding machine through the nut.
In this embodiment, the positional relationship between the screw and the nut is not shown, wherein the screw may be a ball screw, when the servo motor 1 is suddenly powered off or the power supply is suddenly cut off, the buffering braking device 3 outputs a stable braking torque, and the braking torque is transmitted to the screw and the nut through the transmission assembly 5, and then transmitted to the moving part connected to the nut through the screw, so that the moving part stops moving.
In this embodiment, the buffering brake device 3 is a band-type brake.
Under the normal working condition of the electric injection molding machine, the servo motor 1 normally operates, the band-type brake is in a power-on state and cannot output braking torque, the output shaft of the servo motor 1 normally rotates, and only when the servo motor 1 is in an abnormal state or suddenly is powered off, the band-type brake can automatically attract at the moment and output stable braking torque to the output shaft 11.
Preferably, the band-type brake is an electromagnetic band-type brake.
The electromagnetic band-type brake comprises a brake electromagnet and a brake shoe brake, wherein the brake electromagnet comprises an iron core, an armature and a coil, the brake shoe brake comprises a brake wheel, a brake shoe, a lever and a spring, and the brake wheel and the motor are arranged on the same rotating shaft.
The electromagnetic band-type brake can still output braking torque under the condition of sudden power failure, namely when the whole injection molding machine is suddenly powered off, the electromagnetic band-type brake can be automatically attracted to output stable torque to perform buffering braking.
In this embodiment, the connecting seat 2 is prism-shaped, the first pulley 51 is disposed in the connecting seat 2, and two side surfaces of the connecting seat 2 are provided with through holes 21 for the transmission belt 50 to pass through.
Referring to fig. 1, the connecting seat 2 is set to be prism-shaped, the first belt wheel 51 is arranged in the prism-shaped interior, so that the space occupancy rate can be effectively improved, the volume of the whole buffering brake mechanism is reduced, and the installation and the assembly are convenient.
Wherein, the connecting seat 2 is directly fixed on the fixing device through a screw, and the buffering brake device 3 is fixed on the prism top surface of the connecting seat 2.
The first belt wheel 51 is sleeved on the output shaft 11 of the servo motor 1, and the output shaft 11 is connected with the first belt wheel 51 through an expansion sleeve.
The expansion sleeve is also called expansion coupling sleeve, and is an advanced basic component in mechanical coupling, in the coupling of wheel and shaft it is a keyless coupling device which can utilize the pressure and friction force produced between the containing surfaces to implement load transmission by means of screwing high-strength bolt, when it is loaded, it utilizes the combination pressure of expansion sleeve and shaft and friction force produced together to transfer torque and axial force or composite load of both them.
When the servo motor 1 normally operates, the first belt wheel 51 transmits the output torque on the output shaft 11 of the servo motor 11 to the moving part of the electric injection molding machine through the expansion sleeve, and drives the moving part of the electric injection molding machine to move.
Through setting up the tight cover that expands for there is not key connection between output shaft 11 and the first belt pulley 51, the hookup is reliable and stable, and intensity is higher, and installation and dismantlement are convenient.
Further, the connection between the first pulley 51 and the output shaft 11 may be made by a spline flat key, that is, the expansion sleeve is replaced by the spline flat key.
In this embodiment, the fixing device 4 is a flange plate, the flange plate is square, the servo motor 1 is arranged on one side of the flange plate, and the connecting seat 2, the buffering brake device 3 and the transmission assembly 5 are arranged on the other side of the flange plate.
Wherein, be provided with the round hole on the flange piece and pass for servo motor 1's output shaft, it is fixed through screwed connection between servo motor 1 and the flange piece, fixed through screwed connection between connecting seat 2 and the flange piece, 3 rethread screws of buffering arresting gear are fixed on connecting seat 2.
Through setting up the flange piece and setting up servo motor 1 in one side of flange piece, set up connecting seat 2, buffering arresting gear 3 and transmission assembly 5 in the opposite side of the flange piece relative with servo motor 1, can make things convenient for whole buffering brake mechanism's installation and maintenance, operating personnel only need from a left side to the right side install in proper order each part can, it is very convenient to install.
In this embodiment, the servo motor 1 and the buffer brake device 3 are electrically connected to the driver, respectively, and the switches of the servo motor 1 and the buffer brake device 3 are controlled by the driver.
The driver is not shown in the figure, when the servo motor 1 is in an abnormal state, the driver detects the current abnormal state of the servo motor, the power supply input of the servo motor 1 is cut off, the servo motor 1 stops outputting the torque, meanwhile, the driver can also control the buffer braking device 3, so that the buffer braking device 3 is attracted to generate stable braking torque, and the braking torque is transmitted to a moving part of the electric injection molding machine through the transmission assembly 5, so that the moving part stops moving.
Under another condition, namely when the whole electric injection molding machine has an unexpected power failure, the driver, the servo motor 1 and the buffering brake device 3 do not have power input at the moment, the output shaft 11 of the servo motor 1 stops outputting the torque, and the buffering brake device 3 can be automatically attracted under the condition of no power input, and outputs the stable braking torque through friction, so that the buffering brake device 3 can still generate the braking torque under the condition of the unexpected power failure of the whole electric injection molding machine, thereby playing a role of buffering and braking the moving parts of the electric injection molding machine.
Through setting up buffering arresting gear 3, can enough be in abnormal state at servo motor 1, the driver has the effect of buffering braking under the condition of power input, can play the effect of buffering braking under servo motor 1 and driver do not all have the condition of power input again, can effectually deal with the risk situation of multiple difference promptly.
In the present embodiment, the second pulley 52 is located on the same vertical plane as the first pulley 51, and the second pulley 52 is located below the first pulley.
The second belt wheel 52 and the first belt wheel 51 are positioned on the same vertical surface, so that the braking torque and the output torque of the output shaft 11 of the servo motor 1 can be conveniently and stably transmitted to the moving part of the electric injection molding machine, and the moving part of the electric injection molding machine can be effectively controlled.
In the present embodiment, the diameter of the second pulley 52 is larger than the diameter of the first pulley 51. First band pulley 51 is direct to be established on output shaft 11 through the tight cover that expands, and when output shaft 11 rotated, first band pulley 51 slew velocity was faster, can effectual consumption moment of torsion, when servo motor 1 power cut-off, can be quick make servo motor 1 stall.
Through setting up buffering arresting gear, under the condition of servo driver sudden power failure accident or servo motor power emergency cut-off, can export stable braking torque, cushion the braking to the moving part of electric injection molding machine, make the machine stop motion, prevent that the motor from losing power suddenly and producing the destruction to the moving part of electric injection molding machine. And through setting up independent buffering arresting gear, occupation space is little, and it is also very convenient to maintain the repacking, has higher adaptability simultaneously, can adapt to the electric injection molding machine of different models, and it is more convenient to use.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides a buffering brake mechanism of electronic injection molding machine which characterized in that includes: the device comprises a servo motor, a fixing device, a connecting seat, a buffering brake device and a transmission assembly;
the transmission assembly comprises a first belt wheel, a second belt wheel and a transmission belt, and the first belt wheel is connected with the second belt wheel through the transmission belt;
the servo motor and the connecting seat are respectively fixed on the fixing device, and the buffer braking device is fixed on the connecting seat through screws;
the servo motor is provided with an output shaft, and the output shaft penetrates through the fixing device and is connected with the buffering brake device through a flat key;
the first belt wheel is sleeved on the output shaft, the second belt wheel is provided with a screw rod, the screw rod is provided with a nut, and the screw rod is connected with a moving part of the electric injection molding machine through the nut.
2. The cushion brake mechanism of an electric injection molding machine according to claim 1, wherein the cushion brake device is a band-type brake.
3. The cushion brake mechanism of an electric injection molding machine according to claim 1, wherein the cushion brake device is an electromagnetic band-type brake.
4. The cushion brake mechanism of an electric injection molding machine according to claim 1, wherein the connecting seat is prism-shaped, the first pulley is disposed in the connecting seat, and through holes for the transmission belt to pass through are formed on two side surfaces of the connecting seat.
5. The cushion brake mechanism of an electric injection molding machine according to claim 1, wherein the fixing device is a flange plate, the flange plate is square, the servo motor is disposed on one side of the flange plate, and the connecting seat, the cushion brake device and the transmission assembly are disposed on the other side of the flange plate.
6. The cushion brake mechanism of an electric injection molding machine according to claim 2 or 3, wherein the servo motor and the cushion brake device are electrically connected to a driver, respectively, and the switch of the servo motor and the switch of the cushion brake device are controlled by the driver.
7. The cushion brake mechanism of an electric injection molding machine according to claim 1, wherein the second pulley is located on the same vertical plane as the first pulley, and the second pulley is located below the first pulley.
8. The cushion brake mechanism of an electric injection molding machine according to claim 7, wherein the diameter of the second pulley is larger than the diameter of the first pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920561310.9U CN210161566U (en) | 2019-04-23 | 2019-04-23 | Buffering brake mechanism of electric injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920561310.9U CN210161566U (en) | 2019-04-23 | 2019-04-23 | Buffering brake mechanism of electric injection molding machine |
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| CN210161566U true CN210161566U (en) | 2020-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920561310.9U Active CN210161566U (en) | 2019-04-23 | 2019-04-23 | Buffering brake mechanism of electric injection molding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116484A (en) * | 2019-04-23 | 2019-08-13 | 海天塑机集团有限公司 | A kind of buffering braking mechanism of electric injection molding machine |
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2019
- 2019-04-23 CN CN201920561310.9U patent/CN210161566U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116484A (en) * | 2019-04-23 | 2019-08-13 | 海天塑机集团有限公司 | A kind of buffering braking mechanism of electric injection molding machine |
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