CN211334283U - Power device of injection molding mechanism - Google Patents

Abstract

The utility model discloses a power device of mechanism of moulding plastics, the mechanism of moulding plastics is including penetrating a back plate and screw rod, power device includes motor and reducing gear box, the reducing gear box with penetrate a back plate fixed connection, the motor is connected with the input of reducing gear box, the screw rod is connected with the output of reducing gear box. The utility model discloses a motor and reducing gear box compare in hydraulic motor as the power supply, and the cost is lower, and machine performance is more stable.

Description

Power device of injection molding mechanism

Technical Field

The utility model relates to a power device of mechanism of moulding plastics belongs to mechanical equipment technical field.

Background

An injection molding machine is also known as an injection molding machine or an injection machine. It is a main forming equipment for making various shaped plastic products from thermoplastic plastics or thermosetting plastics by using plastic forming mould. The device is divided into a vertical type, a horizontal type and a full-electric type. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity.

Chinese patent 201610342507.4 discloses an injection molding mechanism, which is composed of a hydraulic motor as a power source, wherein the hydraulic motor has high cost and complex structure, and is easy to be damaged, and once damaged, the maintenance difficulty is high, the maintenance cost is high, and the work stability of the injection molding machine is poor.

Disclosure of Invention

A primary object of the present invention is to provide a power device for an injection molding machine, which reduces the cost and facilitates the maintenance.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a power device of mechanism of moulding plastics, the mechanism of moulding plastics is including penetrating a back plate and screw rod, power device includes motor and reducing gear box, the reducing gear box with penetrate a back plate fixed connection, the motor is connected with the input of reducing gear box, the screw rod is connected with the output of reducing gear box.

Further, the power device of the injection mechanism, wherein: the screw rod is connected with the reduction gearbox through a coupler, the injection platform rear plate comprises a screw rod cavity, the coupler is located in the screw rod cavity, the end portion of the screw rod is located in the screw rod cavity and fixedly connected with the coupler, and the other end of the coupler is connected with an output port of the reduction gearbox.

Further, the power device of the injection mechanism, wherein: one end of the coupler is provided with an accommodating cavity, and the end part of the screw rod, close to one side of the reduction gearbox, is fixedly connected in the accommodating cavity.

Still further, the power device of the injection mechanism, wherein: the coupler is characterized in that a coupler head is formed at the other end of the coupler, tooth marks are formed on the periphery of the coupler head, an accommodating cavity is formed in an output port of the reduction gearbox, the size of the accommodating cavity of the output port of the reduction gearbox is matched with that of the coupler head, the tooth marks are formed on the inner wall of the accommodating cavity of the output port of the reduction gearbox, and the tooth marks of the coupler head are meshed with the tooth marks of the accommodating cavity of the output port of the reduction gearbox.

Still further, the power device of the injection mechanism, wherein: the rear plate of the injection platform is provided with a fixed plate, and the reduction box is fixedly connected with the fixed plate.

Still further, the power device of the injection molding mechanism, wherein: the motor is a 55W power motor or a motor with higher power.

The utility model discloses following beneficial effect has: the utility model discloses a motor and reducing gear box compare in hydraulic motor as the power supply, and the cost is lower, and machine performance is more stable.

Drawings

FIG. 1 is a schematic view of an injection molding machine;

FIG. 2 is a schematic view of an injection molding mechanism;

FIG. 3 is a schematic view of the injection mechanism with the power plant removed;

FIG. 4 is a schematic view of a coupling;

FIG. 5 is a schematic view of a shooting pot;

FIG. 6 is another perspective view of the glue-injecting cylinder;

FIG. 7 is a schematic view of a coupling flange;

fig. 8 is a cross-sectional view of the shooting pot.

In the figure: 1. a working platform; 2. an injection molding mechanism; 3. a mold clamping mechanism; 21. a motor; 22. a reduction gearbox; 23. a shooting table back plate; 231. a piston rod fixing cavity; 232. a screw cavity; 233. a fixing plate; 24. a front plate of the injection platform; 241. a cylinder body fixing cavity; 242. a charging barrel fixing cavity; 25. a glue injecting cylinder; 251. a cylinder body; 2511. a glue injecting cavity; 2512. no oil cavity; 252. a connecting flange; 2521. a first oil inlet; 2522. a through hole; 2523. an oil discharge port; 2524. a hollow portion; 253. a first piston rod; 2531. a first cavity; 2532. a second cavity; 2533. a second oil inlet; 2534. a glue injection piston; 254. a second piston rod; 255. injecting the glue cylinder end plate; 2551. an air exchange aperture; 26. a charging barrel; 27. a screw; 28. a coupler 281 and an accommodating cavity; 282. coupler joint.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1 and fig. 2, the injection molding machine includes a working platform 1, an injection molding mechanism 2 and a mold clamping mechanism 3, the mold clamping mechanism 3 is fixedly connected to the working platform 1, the injection molding mechanism 2 is connected to the working platform 1 through a slide rail, and the injection molding mechanism 2 is connected to the mold clamping mechanism 3 through a charging barrel 26 of the injection molding mechanism 2.

As shown in fig. 2 and 3, the injection mechanism 2 includes a motor 21, a reduction box 22, an injection platform rear plate 23, an injection platform front plate 24, two injection cylinders 25, a material cylinder 26 and a screw 27, the injection platform rear plate 23 includes a screw cavity 232 and a piston rod fixing cavity 231, the piston rod fixing cavities 231 are two and are respectively located at the left and right sides of the screw cavity 232, the injection platform front plate includes a cylinder fixing cavity 241 and a material cylinder fixing cavity 242, the cylinder fixing cavities 241 are two and are respectively located at the left and right sides of the material cylinder fixing cavity 242, the cylinder fixing cavity 241 corresponds to the piston rod fixing cavity 231 in position, the material cylinder fixing cavity 242 corresponds to the screw cavity 232 in position, the two injection cylinders 25 are provided, the cylinder bodies 251 of the two injection cylinders 25 are fixedly connected to the cylinder fixing cavity 241 of the injection platform front plate 24, the other end of the injection cylinder 25 is connected to the piston rod fixing cavity 231, so that the injection platform front plate 24 is connected to the injection platform, the rear side of the injection platform rear plate 23 is provided with a fixing plate 233, the reduction gearbox is fixedly connected with the fixing plate 233, the motor 21 is connected with the input end of the reduction gearbox 22, the screw 27 is connected with the output end of the reduction gearbox 22, the screw 27 is positioned in the screw cavity 232 and penetrates through the material barrel fixing cavity 242, the end part of the material barrel 26 is fixedly connected to the material barrel fixing cavity 242, and the material barrel 26 is sleeved on the periphery of the screw 27.

Specifically, as shown in fig. 3 and 4, the screw 27 is connected with the reduction gearbox 22 through the coupler 28, the coupler 28 is located in the screw cavity 232, one end of the coupler 28 is provided with an accommodating cavity 281, the other end of the coupler 28 is formed with a coupler head, and an end of the screw 27 close to one side of the reduction gearbox 22 is fixedly connected in the accommodating cavity 281. Tooth marks are formed on the periphery of the coupler head 28, an accommodating cavity is formed at the output port of the reduction gearbox 22, the size of the accommodating cavity at the output port of the reduction gearbox 22 is matched with that of the coupler head, the tooth marks are formed on the inner wall of the accommodating cavity at the output port of the reduction gearbox 22, and the tooth marks at the coupler head are meshed with the tooth marks in the accommodating cavity at the output port of the reduction gearbox 22. Preferably, the motor 21 is preferably a 55W power motor or a higher power motor. The motor 21 rotates and transmits the torque to the reduction gearbox 22, the reduction gearbox 22 transmits the torque to the screw 27 to replace a hydraulic motor so that the screw 27 rotates, and the reduction gearbox 22 is used for outputting proper rotating speed and torque to the screw 27. The reduction gearbox 22 is prior art, can be purchased directly on the market, and the detailed description of the internal structure thereof is omitted.

As shown in fig. 5 to 8, the glue injecting cylinder 25 includes a cylinder 251, a connecting flange 252, a first piston rod 253, a second piston rod 254 and a glue injecting cylinder end plate 255, the glue injecting end plate 255 and the connecting flange 252 are respectively fixedly connected to two ends of the cylinder 251, the second piston rod 254 is disposed in the cylinder 251, one end of the second piston rod 254 is fixedly connected to the glue injecting cylinder end plate 255, a hollow portion 2524 is formed on the connecting flange 252, a cavity is formed inside the first piston rod 253, the first piston rod 253 penetrates through the hollow portion 2524 of the connecting flange 252 and is inserted into the cylinder 251, the other end of the second piston rod 254 is inserted into the cavity of the first piston rod 253, a glue injecting piston 2534 is sleeved on the first piston rod 253, the glue injecting piston 2534 is limited in the cylinder 251, a glue injecting cavity 2511 is formed between the glue injecting piston 2534 and the connecting flange 252, an air exchange hole 2551 is formed in the glue injection end plate 255, an oil-free cavity 2512 is formed between the glue injection piston 2534 and the glue injection end plate 255, and the air exchange hole 2551 is communicated with the oil-free cavity 2512. The glue injection cavity 2511 and the cavity in the first piston rod 253 are both communicated with a hydraulic pump.

Specifically, in order to prevent the glue injection cavity 2511 from entering the oil-free cavity 2512, the glue injection piston 2534 is tightly attached to the inner wall of the glue injection cylinder 251 through interference fit. Similarly, the second piston rod 254 is tightly attached to the cavity of the first piston rod 253 by interference fit. Preferably, the cavities of the first piston rod 253 include a first cavity 2531 and a second cavity 2532, one end of the first cavity 2531 is connected to a hydraulic pump, the other end of the first cavity 2531 is connected to one end of the second cavity 2532, the second piston rod 254 is inserted into the second cavity 2532, and the cross-sectional area of the second cavity 2532 is greater than that of the first cavity 2531. A second oil inlet 2533 is formed at the end of the first piston rod 253 far away from the second piston rod 254, the second oil inlet 2533 is communicated with the first cavity 2531 and the hydraulic pump, and the end of the first piston rod 253 far away from the second piston rod 254 is located in the piston rod fixing cavity 231.

As shown in fig. 7 and 8, a first oil inlet 2521 is formed on the outer peripheral surface of the connecting flange 252, a through hole 2522 is formed on a portion of the end surface of the connecting flange 252 located inside the cylinder block 251, the first oil inlet 2521 and the through hole 2522 are communicated to form an oil inlet passage, and the first oil inlet 2521 is communicated with the hydraulic pump. In the process of injecting the glue, a part of the oil enters between the first piston rod 253 and the hollow portion 2524 of the connecting flange 252, and for this purpose, an oil discharge port 2523 is further disposed on the outer circumferential surface of the connecting flange 252, and the oil discharge port 2523 is communicated with the hollow portion 2524. A protruding layer is formed on the end surface of the side where the connecting flange 252 is connected to the cylinder 251, threads are formed on the outer periphery of the protruding layer, the protruding layer is in threaded connection with the inner wall of the cylinder 251, and the through hole 2522 is formed on the end surface of the protruding layer.

The working principle of the glue shooting cylinder is as follows: when the glue injection work is carried out, the oil inlet of the glue injection cavity 2511 pushes the first piston rod 253 to move, an oil-free cavity 2512 is formed between the glue injection piston 2534 and the glue injection cylinder end plate 255, and only air in the oil-free cavity 2512 needs to be extruded, so that the first piston rod 253 can be pushed only by small pressure. When the first piston rod needs to be reset, oil is introduced into the cavity of the first piston rod 253, so that the first piston rod 253 can be driven to reset. Because the volume of the cavity in the first piston rod 253 is very little, hydraulic pressure is then correspondingly very little, when doing the work of moulding plastics again, penetrates gluey chamber 2511 oil feed and promotes first piston rod 253 motion, can make the oil in the cavity in the first piston rod 253 discharge.

As can be seen from the above description, the motor and the reduction gearbox of the present invention are used as power sources, compared with a hydraulic motor, the cost is lower, and the machine performance is more stable; the utility model discloses at the in-process of moulding plastics, its piston rod that penetrates the jar can accomplish reciprocating motion under very little pressure condition for piston rod reciprocating motion's efficiency has reduced the loss of machine, the cost is reduced.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (1)

1. The utility model provides a power device of mechanism of moulding plastics which characterized in that: the injection molding mechanism comprises an injection platform rear plate and a screw rod, the power device comprises a motor and a reduction gearbox, the reduction gearbox is fixedly connected with the injection platform rear plate, the motor is connected with the input end of the reduction gearbox, the screw rod is connected with the output end of the reduction gearbox, the screw rod is connected with the reduction gearbox through a coupler, the injection platform rear plate comprises a screw rod cavity, the coupler is positioned in the screw rod cavity, the end part of the screw rod is positioned in the screw rod cavity and is fixedly connected with the coupler, the other end of the coupler is connected with the output port of the reduction gearbox, one end of the coupler is provided with an accommodating cavity, the end part of the screw rod, which is close to one side of the reduction gearbox, is fixedly connected in the accommodating cavity, the other end of the coupler is provided with a coupler head, the periphery of, the size of the containing cavity of the output port of the reduction gearbox is matched with that of the head of the coupler, tooth marks are formed on the inner wall of the containing cavity of the output port of the reduction gearbox, the tooth marks of the head of the coupler are meshed with the tooth marks of the containing cavity of the output port of the reduction gearbox, the back plate of the injection platform is provided with a fixing plate, the reduction gearbox is fixedly connected with the fixing plate, and the motor is a 55W power motor or a higher power motor.

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