Precise lead screw reduction gear device of injection molding machine

Abstract

The utility model discloses an injection molding machine precision screw rod reduction gear device, and relates to the technical field of injection molding machines, the injection molding machine precision screw rod reduction gear device comprises a box body and a driving motor, the driving motor is wrapped with a rubber sleeve except the output end, a partition plate dividing the box body into two cavities is arranged in the box body, a placing table is arranged in the box body and located on one side of the partition plate, and a pressing plate is arranged above the placing table; a plurality of fastening bolts are arranged on the pressing plate, one end of each fastening bolt is in threaded connection with the placement table, the driving motor is placed on the placement table, and the pressing plate and the placement table jointly clamp and fix the driving motor; by arranging the rubber sleeve to wrap the driving motor, vibration generated by operation of the driving motor is reduced, meanwhile, the working volume of the driving motor is reduced, and the influence on the volume of the working environment is reduced; the placing table is arranged to place and install the driving motor, the fastening bolt is arranged to fasten the pressing plate, the pressing plate is matched with the placing table to carry out adjustable stable clamping on the driving motor, and noise generated by shaking of the motor is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of injection molding machines, in particular to a precision screw gear device of an injection molding machine. BACKGROUND

[0002] The precision screw gear device of an injection molding machine is an important transmission system for an injection molding machine, mainly used for realizing a high-precision and high-efficiency injection molding process; the device is usually composed of a precision screw, a gear reduction and a driving motor, and can accurately control the motion trajectory and speed of the injection molding machine, thereby improving the quality and production efficiency of products; the gear reduction is used to reduce the rotating speed of the driving motor and increase the output torque.

[0003] In the prior art, as a part of the gear reduction device, the driving motor is usually directly installed in the device box to provide driving force for the gear rotation of the device.

[0004] According to the related technology, the inventors believe that the driving motor is arranged in the device box, and the transmission between the driving motor and the gear will cause great noise, affecting the working environment. CONTENT OF THE UTILITY MODEL

[0005] The application aims to provide a precision screw gear device of an injection molding machine to improve the problem that the driving motor is arranged in the device box, and the transmission between the driving motor and the gear will cause great noise, affecting the working environment.

[0006] The application provides a precision screw gear device of an injection molding machine, which adopts the following technical scheme:

[0007] The precision screw gear device of an injection molding machine comprises a box body and a driving motor, characterized in that: the driving motor is wrapped with a rubber sleeve except the output end; a partition plate is arranged in the box body to divide the box body into two cavities; a placing table is arranged in the box body and located on one side of the partition plate; a pressing plate is arranged above the placing table; a plurality of fastening bolts are arranged on the pressing plate; one end of the fastening bolts is threadedly connected with the placing table; the driving motor is placed on the placing table; and the pressing plate and the placing table jointly clamp and fix the driving motor.

[0008] By wrapping the driving motor with the rubber sleeve, the vibration generated by the operation of the driving motor is reduced, the working volume of the driving motor is reduced, and the influence of the volume on the working environment is reduced; by arranging the placing table to place and install the driving motor and arranging the fastening bolts to fasten the pressing plate, the pressing plate cooperates with the placing table to adjustably stably clamp the driving motor, and the noise generated by the motor due to shaking is reduced.

[0009] Optionally, the placing table is provided with a fixing groove, a placing plate is slidably arranged in the fixing groove, and a spring is arranged in the fixing groove and connected to the bottom surface of the placing plate.

[0010] By adopting the above technical scheme, the placing plate is arranged to accurately drive the motor to the placing position on the placing table, the fixing groove and the spring arranged therein are arranged to provide a certain buffer stroke for the motor, the spring is arranged to relieve and reduce the vibration of the motor, thereby reducing the vibration noise of the motor.

[0011] Optionally, the side of the pressing plate close to the placing table is provided with a clamping groove matched with the driving motor wrapped with a rubber sleeve.

[0012] By adopting the above technical scheme, the clamping groove is arranged to fasten and clamp the driving motor, so that the pressing plate can press and fix the driving motor under the control of the fastening bolt, thereby reducing the shaking of the driving motor.

[0013] Optionally, the output end of the driving motor is provided with an output gear concentric with the driving motor.

[0014] By adopting the above technical scheme, the output gear is arranged to transmit the driving force of the driving motor through gear cooperation.

[0015] Optionally, the box is provided with a partition plate dividing the box into two cavities, and a speed reduction gear set is rotatably connected to the partition plate; the speed reduction gear set comprises a connecting shaft and a large gear and a small gear arranged at both ends of the connecting shaft, respectively, and the large gear is in transmission cooperation with the output gear.

[0016] By adopting the above technical scheme, the large gear is arranged to cooperate with the output gear, the connecting shaft synchronously drives the small gear at the speed of the large gear, the gear speed transmitted by the output gear driven by the driving motor is reduced, and the purpose of reducing the output speed of the driving motor is achieved.

[0017] Optionally, an output hole is formed in the side wall of the box away from the driving motor, a transmission screw rod is arranged in the output hole, a synchronous gear is concentrically arranged at the end of the transmission screw rod close to the driving motor, and the synchronous gear is in transmission cooperation with the small gear.

[0018] By adopting the above technical scheme, the transmission screw rod is arranged in the output hole, the synchronous gear is arranged to cooperate with the small gear, the rotating force of the small gear is transmitted to the synchronous gear, and the transmission screw rod is driven to rotate by the synchronous gear, thereby achieving the purpose of reducing the speed of the transmission screw rod by the driving motor.

[0019] Optionally, the output gear, the large gear, the small gear and the synchronous gear are all helical gears.

[0020] By adopting the technical scheme, since the meshing process of the helical gear is gradually performed and the change of the contact line is smooth, the noise and vibration generated are small, and the helical gear helps to reduce the noise generated by the gear transmission.

[0021] Optionally, the box is internally laid with a sound insulation layer.

[0022] By adopting the technical scheme, the sound insulation layer is laid to absorb and reduce the noise generated by the driving motor operation and the transmission between the gears in the box, and the device helps to reduce the noise generated by the device.

[0023] To sum up, the application includes at least one of the following beneficial technical effects of the precision screw rod reduction gear device of the injection molding machine:

[0024] 1. The driving motor is wrapped with a rubber sleeve to reduce the vibration generated by the driving motor operation, reduce the working volume of the driving motor, and reduce the volume impact on the working environment. The driving motor is placed on the placement table, and the fastening bolt is used to fasten the pressing plate. The pressing plate cooperates with the placement table to adjustably and stably clamp the driving motor, thereby reducing the noise generated by the motor due to shaking.

[0025] 2. The placement plate is used to accurately place and install the driving motor on the placement table. The fixed groove cooperates with the spring therein to provide a certain buffer stroke for the driving motor. The spring is used to relieve and reduce the vibration of the driving motor, thereby reducing the vibration noise of the driving motor.

[0026] 3. Since the meshing process of the helical gear is gradually performed and the change of the contact line is smooth, the noise and vibration generated are small, and the helical gear helps to reduce the noise generated by the gear transmission. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the main structure of the precision screw rod reduction gear device of the injection molding machine.

[0028] Figure 2 is a schematic diagram of the reduction gear set structure in the embodiment.

[0029] Figure 3 is a schematic diagram of the placement table structure in the embodiment.

[0030] In the figure, 1 is a box, 11 is a partition, 12 is an output hole, 2 is a driving motor, 3 is a rubber sleeve, 4 is a placement table, 41 is a fixed groove, 42 is a spring, 43 is a placement plate, 5 is a pressing plate, 51 is a clamping groove, 6 is an output gear, 7 is a reduction gear set, 71 is a connecting shaft, 72 is a large gear, 73 is a small gear, 8 is a transmission screw rod, 81 is a synchronous gear, 9 is a sound insulation layer, and 10 is a fastening bolt. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to the accompanying drawings. Figure 1 - the accompanying drawings Figure 3 , the application will be further described in detail.

[0032] A precision screw gear device of an injection molding machine, referring to Figure 1 , Figure 2 , comprising a box body 1, a partition plate 11 is arranged in the box body 1 to divide the box body 1 into two cavities, a driving motor 2 is arranged in one cavity of the partition plate 11, a through hole is formed in the partition plate 11, and a speed reduction gear set 7 is rotatably connected in the through hole through a bearing; a sound insulation layer 9 is laid in the box body 1, and the sound insulation layer 9 is a material with uneven surface to help absorbing noise;

[0033] The speed reduction gear set 7 comprises a connecting shaft 71 and a large gear 72 and a small gear 73 arranged at two ends of the connecting shaft 71 respectively, the connecting shaft 71 is rotatably inserted in the through hole, the output end of the driving motor 2 is provided with an output gear 6 concentric with the driving motor 2, the output gear 6 has a smaller diameter than the large gear 72 and is in transmission cooperation with the large gear 72, an output hole 12 is formed in the side wall of the box body 1 away from the driving motor 2, a transmission screw rod 8 is arranged in the output hole 12, a synchronous gear 81 is concentrically arranged at the end of the transmission screw rod 8 close to the box body 1, the synchronous gear 81 is in transmission cooperation with the small gear 73, the synchronous gear 81 has a larger diameter than the small gear 73, so as to further reduce the transmission speed of the small gear 73 and synchronously drive the transmission screw rod 8; the output gear 6, the large gear 72, the small gear 73 and the synchronous gear 81 are all helical gears.

[0034] Referring to Figure 2 , Figure 3 , a placing table 4 is welded and fixed in the cavity of the partition plate 11, a fixing groove 41 is formed in the placing table 4, a placing plate 43 matched with the fixing groove 41 is slidably arranged in the fixing groove 41, a spring 42 is arranged in the fixing groove 41, one end of the spring 42 is connected with the bottom surface of the placing plate 43, the driving motor 2 is placed on the placing plate 43, a rubber sleeve 3 is wrapped around the driving motor 2 except the output end, the rubber sleeve 3 is made of rubber material and has certain shock absorption and sound insulation effect, a pressing plate 5 is arranged above the placing table 4, four fastening bolts 10 are arranged on the pressing plate 5 and are uniformly distributed, one end of the fastening bolts 10 is threadedly connected with the placing table 4, the driving motor 2 is placed on the placing table 4, a clamping groove 51 matched with the driving motor 2 wrapped by the rubber sleeve 3 is arranged on the side of the pressing plate 5 close to the placing table 4, and the pressing plate 5 and the placing table 4 jointly clamp and fix the driving motor 2 under the fastening of the fastening bolts 10.

[0035] The implementation principle of the embodiment of the application is as follows:

[0036] In actual use, the driving motor 2 operates, the output gear 6 at the output end of the driving motor 2 is transmitted to the transmission screw rod 8 through the speed reduction gear set 7, drives the transmission screw rod 8 to rotate, the noise of gear transmission is reduced by setting each gear as a helical gear; the vibration noise generated when the driving motor 2 operates is first relieved by the rubber sleeve 3, the driving motor 2 vibration is reduced under the clamping of the placing table 4 and the pressing plate 5, at the same time, the vibration effect of the driving motor 2 is relieved and absorbed through the spring 42, so as to reduce the driving motor 2 vibration and the noise generated thereby, the noise in the box body 1 is further absorbed and reduced through the sound insulation layer 9, and the purpose of reducing the device noise is achieved.

[0037] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An injection molding machine precision lead screw reduction gear arrangement, characterized by: Including box (1), drive motor (2); The drive motor (2) is wrapped with rubber sleeve (3) except output end, the box (1) is provided with placing table (4), the placing table (4) is provided with pressing plate (5) above, a plurality of fastening bolts (10) are arranged on the pressing plate (5), one end of the fastening bolt (10) is connected with the placing table (4) in screw thread, the drive motor (2) is placed on the placing table (4), and the pressing plate (5) and the placing table (4) jointly clamp and fix the drive motor (2).

2. The precision screw reduction gear device for injection molding machines according to claim 1, characterized in that: The placing table (4) is provided with fixed groove (41), the fixed groove (41) is provided with placing plate (43) that slides, the fixed groove (41) is provided with spring (42), and one end of the spring (42) is connected with the bottom surface of the placing plate (43).

3. The precision screw reduction gear device for injection molding machines of claim 1 wherein: The pressing plate (5) is provided with the clamping groove (51) of the drive motor (2) after being wrapped with the rubber sleeve (3) on the side close to the placing table (4).

4. The precision screw reduction gear arrangement for injection molding machines of claim 1 wherein: The drive motor (2) is provided with the output gear (6) concentric with it.

5. The precision screw reduction gear arrangement for injection molding machines of claim 1 wherein: The box (1) is provided with the partition (11) that divides the box (1) into two cavities, the partition (11) is rotatably connected with the speed reduction gear set (7);The speed reduction gear set (7) includes connecting shaft (71) and large gear (72) and pinion (73) arranged at both ends of connecting shaft (71) respectively, and the large gear (72) is in transmission cooperation with the output gear (6).

6. The precision screw reduction gear arrangement for injection molding machines of claim 1 wherein: The side wall of the box (1) away from the drive motor (2) is provided with output hole (12), the output hole (12) is provided with transmission screw rod (8) in penetration, the transmission screw rod (8) is provided with synchronous gear (81) concentrically at one end close to the drive motor (2), and the synchronous gear (81) is in transmission cooperation with the pinion (73).

7. The precision screw reduction gear arrangement for injection molding machines of claim 1 wherein: The output gear (6), the large gear (72), the pinion (73) and the synchronous gear (81) are all helical gears.

8. The precision screw reduction gear arrangement for injection molding machines of claim 1 wherein: The box (1) is provided with sound insulation layer (9) in.

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