Guide device of injection molding machine

Abstract

The utility model belongs to the technical field of material guiding, particularly relates to a material guiding device of an injection molding machine, and aims to solve the problems that plastic particle raw materials are conveyed to a screw feeder through a hopper in the prior art, the lower side of the hopper is narrow, and plastic particles are likely to extrude one another to block the hopper during discharging. According to the scheme, the plastic particle stirring device comprises a sealing cover arranged at the top of the injection molding machine hopper, a main rotating shaft is rotationally installed in the sealing cover, and a stirring assembly used for uniformly stirring various plastic particles is arranged on the surface of the main rotating shaft; a jolting assembly is installed in the main rotating shaft, the jolting assembly comprises a tubular space which is formed in the main rotating shaft and penetrates downwards, a sliding rod is installed in the tubular space in a sliding mode, and the lower end of the sliding rod extends out of the lower end of the main rotating shaft. The uniform stirring of the plastic particles and the continuous dredging of the discharge hole are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of material guiding, in particular to a material guiding device for an injection molding machine. Background Art

[0002] Injection molding machines, also known as injection molding machines or injection machines, are the primary molding equipment used to create various shapes of plastic products from thermoplastics or thermosetting plastics using plastic molding molds. They are available in vertical, horizontal, and all-electric models. They heat the plastic and apply high pressure to the molten plastic, causing it to be ejected and fill the mold cavity.

[0003] When the injection molding machine is working, the plastic granules are transported to the screw feeder through the hopper. The lower side of the hopper is narrow. When discharging, the plastic granules may squeeze each other and cause blockage in the hopper, making it impossible to discharge the material. At the same time, there are different plastic granules in the hopper. Before entering the screw feeder, the different plastic granules need to be mixed evenly to ensure the uniformity of the discharge.

[0004] In existing equipment, in order to improve the uniformity of feeding different plastic particles, a stirring device is generally set in the hopper to evenly stir the materials in the hopper. In order to solve the problem of material blockage, a vibrator is generally installed near the feeding port to help the raw materials fall smoothly through vibration and reduce the possibility of blockage. However, the installation of a vibrator increases the production cost of the equipment on the one hand, and reduces the stability of the hopper on the other. Utility Model Content

[0005] The purpose of the utility model is to solve the problems in the prior art that when conveying plastic granule raw materials to a screw feeder through a hopper, the lower side of the hopper is narrow, and the plastic granules may squeeze each other and cause blockage in the hopper during discharge. The installation of a vibrator increases the production cost of the equipment on the one hand, and reduces the stability of the hopper on the other hand. A material guiding device for an injection molding machine is proposed to solve the problems in the prior art that when conveying plastic granule raw materials to a screw feeder through a hopper, the lower side of the hopper is narrow, and the plastic granules may squeeze each other and cause blockage in the hopper during discharge.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A material guiding device for an injection molding machine includes a screw conveyor, a hopper connected to a material inlet of the screw conveyor is fixed on the top of the screw conveyor, and the hopper is used to accommodate a variety of plastic particles;

[0008] Wherein, a sealing cover for sealing the hopper is provided on the upper side of the hopper, and a set of lifting components is provided on the side wall of the hopper, and the lifting components are used to control the lifting of the sealing cover;

[0009] A main rotating shaft, the main rotating shaft is rotatably mounted in the sealing cover, and a stirring component is provided on the surface of the main rotating shaft for uniformly stirring the various plastic particles;

[0010] And a shaking component used in conjunction with the stirring component, the shaking component is arranged in the main rotating shaft for continuously clearing the discharge port of the hopper, the shaking component includes a tubular space opened in the main rotating shaft, a sliding rod slides in the tubular space, two through grooves connected to the tubular space are opened in the main rotating shaft, connecting rods slide in the two through grooves, the two connecting rods are fixed to the surface of the sliding rod, a mounting groove is opened in the sealing cover, a positioning ring is fixed in the mounting groove, the top of the positioning ring is formed with a concave and convex arc edge, the two connecting rods are respectively connected to the two arc edges Extrusion contact; when the main shaft starts to rotate, due to the sliding relationship between the slide bar and the tubular space, the slide bar itself does not rotate directly with the main shaft. Since one end of the connecting rod is fixed to the slide bar and the other end is in extrusion contact with the arc edge, as the main shaft rotates, the connecting rod will be squeezed by the arc edge and produce an up and down reciprocating motion. The undulating design of the arc edge makes the connecting rod constantly subject to changing extrusion pressure during the rotation process, causing the slide bar to slide back and forth in the tubular space. The reciprocating sliding of the slide bar produces a shaking effect on the lower part, which helps to improve the fluidity of plastic particles at the discharge port of the hopper;

[0011] The main shaft is driven by the driving mechanism to start rotating in the sealing cover, and the stirring component on its surface rotates accordingly. The stirring component fully mixes the various plastic particles in the hopper through rotation and cutting actions to ensure that the plastic particles are evenly distributed.

[0012] In one possible design, the stirring assembly includes a plurality of stirring blades, which are evenly spaced on the surface of the main shaft. A drive motor is fixed to the top of the sealing cover, and the drive motor is fixedly connected to the main shaft through a coupling. When plastic particles need to be mixed, the drive motor is started and power is transmitted to the main shaft through the coupling. The rotation speed of the drive motor can be adjusted according to actual needs to control the stirring strength and frequency of the stirring blades. Driven by the drive motor, the main shaft starts to rotate, and the stirring blades on its surface also rotate accordingly. As the main shaft rotates, the stirring blades cut, flip and mix the plastic particles in the hopper to improve the mixing effect.

[0013] In one possible design, the shaking assembly also includes a accommodating groove opened at the top of the sliding rod, and a return spring is fixed in the accommodating groove, and the upper end of the return spring is fixedly connected to the top wall of the tubular space. When the main shaft starts to rotate, the connecting rod is squeezed by the arc edge, generating up and down reciprocating motion. When the sliding rod slides upward, the return spring is compressed and stores elastic potential energy. When the squeezing force of the arc edge on the connecting rod decreases or disappears, the return spring releases the elastic potential energy, pushing the sliding rod to slide downward and return to its initial position. The reciprocating motion continues under the joint action of the sliding rod and the return spring, producing a slight shaking effect. The presence of the return spring ensures that the sliding rod can return to its initial position in time after being subjected to external force, thereby maintaining the stability and reliability of the shaking assembly.

[0014] In a possible design, a plurality of material shifting rods are fixed on the surface of the slide rod, and the material shifting rods are located at the lower end of the slide rod. As the slide rod slides, the material shifting rods also move accordingly to shift and stir the plastic particles in the hopper.

[0015] In one possible design, the lifting assembly includes a fixed ring fixed to the surface of the hopper, with electric push rods fixed on both sides of the fixed ring, and the output ends of the two electric push rods are fixedly connected to the bottom end of the sealing cover. When the feed port of the hopper needs to be opened, the control system sends a signal to the electric push rod to make it start to extend. After receiving the signal, the motor inside the electric push rod starts to work, and converts the rotational motion into linear motion through the transmission mechanism, pushing the output end to move upward. Since the output end of the electric push rod is fixedly connected to the bottom end of the sealing cover, the sealing cover will gradually rise as the electric push rod is extended, opening the feed port of the hopper. The lifting and lowering action of the sealing cover is smooth and controllable, which is determined by the extension speed and length of the electric push rod. During the lifting process, the sealing cover always maintains a vertical relationship with the hopper to ensure uniform opening and closing of the discharge port.

[0016] In one possible design, the hopper is made of a transparent acrylic sheet having good light transmittance, so that an operator can clearly observe the amount, color, shape and mixing of the plastic particles in the hopper.

[0017] In one possible design, a sealing gasket for sealing the hopper and the sealing cover is fixed to the bottom end of the sealing cover. When the sealing cover fits tightly against the upper side of the hopper, the sealing gasket can effectively fill the tiny gap between the hopper and the sealing cover to prevent plastic particles, air or impurities from leaking or entering the gap.

[0018] In this application, the electric push rod is started to drive the sealing cover to rise, the seal of the hopper is released, and the plastic particles are continuously poured into the hopper, and then the electric push rod is started to reset the sealing cover and seal the hopper, and the main shaft is driven to rotate by the driving motor, and the rotation of the main shaft drives multiple stirring blades to rotate and stir, so that the various plastic particles are mixed evenly, and the rotation of the main shaft drives the sliding rod to rotate synchronously, and the two connecting rods on the surface of the sliding rod follow the synchronous circular motion, and the connecting rod contacts the positioning ring and the surface of the two arc-shaped edges during the circular motion. When the connecting rod moves to the upper side of the arc-shaped edge, the arc-shaped edge squeezes the connecting rod to move upward, and the connecting rod moves upward to drive the sliding rod to move upward. When the connecting rod moves to the upper side of the positioning ring, the connecting rod drives the sliding rod to fall, and the sliding rod is driven to continue to shake in this reciprocating manner to keep the discharge port unobstructed, and the sliding rod is pushed downward by the elasticity of the reset spring to quickly help the sliding rod move downward.

[0019] In the present invention, the material guiding device of the injection molding machine can achieve the effect of stirring and mixing the various plastic particles entering the hopper through the stirring component;

[0020] In the present invention, the material guiding device of the injection molding machine can achieve the effect of clearing the discharge port by shaking the component;

[0021] In the utility model, the coordinated use of the stirring component and the shaking component realizes uniform stirring of the plastic particles and continuous unblocking of the discharge port, effectively solving the problems existing in the traditional material guiding device. At the same time, the design of the lifting component and the transparent hopper also facilitates the user's use and observation. Therefore, the device has the advantages of simple structure, easy operation, good mixing effect, and not easy to clog, and has broad application prospects in the field of injection molding machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a main perspective view of a material guiding device for an injection molding machine proposed in the utility model;

[0023] Figure 2 This is a cross-sectional view of a material guiding device for an injection molding machine proposed in the utility model;

[0024] Figure 3 This utility model proposes a material guiding device for an injection molding machine Figure 2 A partial enlarged view of point A in the middle;

[0025] Figure 4 This is a partial three-dimensional diagram of a material guiding device for an injection molding machine proposed by the utility model.

[0026] In the figure: 1. Screw conveyor; 2. Hopper; 3. Sealing cover; 4. Fixing ring; 5. Electric push rod; 6. Main shaft; 7. Stirring blade; 8. Sliding rod; 9. Material push rod; 10. Driving motor; 11. Receiving groove; 12. Return spring; 13. Tubular space; 14. Through groove; 15. Connecting rod; 16. Positioning ring; 17. Arc edge; 18. Sealing gasket; 19. Mounting groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example 1, with reference to Figure 1-Figure 4 , a material guiding device includes a screw conveyor 1, a hopper 2, a sealing cover 3, a lifting assembly, a main rotating shaft 6, a stirring assembly and a shaking assembly, wherein a hopper 2 is fixed on the top of the screw conveyor 1, the hopper 2 is used to accommodate a variety of plastic particles, a sealing cover 3 is provided on the upper side of the hopper 2, and a group of lifting assemblies are provided on the side wall of the hopper 2 for controlling the lifting and lowering of the sealing cover 3, the main rotating shaft 6 is rotatably installed in the sealing cover 3, and a stirring assembly is provided on the surface of the main rotating shaft 6, which is used to uniformly stir the various plastic particles through the stirring assembly. At the same time, a shaking assembly used in conjunction with the stirring assembly is provided in the main rotating shaft 6 to continuously dredge the discharge port of the hopper 2;

[0029] The stirring assembly includes a plurality of stirring blades 7, which are evenly spaced and fixed on the surface of the main rotating shaft 6. The driving motor 10 is fixedly connected to the main rotating shaft 6 through a coupling to provide power for the rotation of the stirring blades 7. When the driving motor 10 is started, the main rotating shaft 6 drives the stirring blades 7 to rotate, thereby achieving uniform stirring of the plastic particles in the hopper 2;

[0030] The shaking assembly includes a tubular space 13 opened in the main rotating shaft 6. The lower end of the tubular space 13 is through. A slide rod 8 slides in the tubular space 13. The lower end of the slide rod 8 extends out of the tubular space 13. Two through grooves 14 connected to the tubular space 13 are also opened in the main rotating shaft 6. Two connecting rods 15 are fixed to the outside of the slide rod 8. The two connecting rods 15 extend into the two through grooves 14. The two connecting rods 15 can slide up and down in the through grooves 14.

[0031] A mounting groove 19 is provided in the sealing cover 3, wherein a positioning ring 16 is fixed to the bottom of the mounting groove 19, and a concave and convex arc-shaped edge 17 is formed on the top of the positioning ring 16. The two connecting rods 15 are respectively squeezed and contacted with the arc-shaped edges 17, and the rotation of the main shaft 6 drives the slide bar 8 to rotate synchronously. The two connecting rods 15 on the surface of the slide bar 8 follow and perform circular motion synchronously. When the connecting rod 15 moves in a circular motion, it contacts the surface of the positioning ring 16 and the two arc-shaped edges 17. When the connecting rod 15 moves to the upper side of the arc-shaped edge 17, the arc-shaped edge 17 squeezes the connecting rod 15 to move upward, and the connecting rod 15 moves upward to drive the slide bar 8 to move upward. When the connecting rod 15 moves to the upper side of the positioning ring 16, the connecting rod 15 drives the slide bar 8 to fall, and the slide bar 8 is driven to shake continuously in this reciprocating manner to keep the discharge port unobstructed;

[0032] In addition, the shaking assembly also includes a accommodating groove 11 opened at the top of the slide rod 8, and a reset spring 12 is fixed in the accommodating groove 11. The other end of the reset spring 12 is fixed in the tubular space 13. The elasticity of the reset spring 12 pushes the slide rod 8 downward, which can quickly help the slide rod 8 move downward.

[0033] It also includes a lifting assembly, which includes a fixed ring 4 fixed to the surface of the hopper 2, and electric push rods 5 are fixed on both sides of the fixed ring 4. The output ends of the two electric push rods 5 are fixed to the bottom end of the sealing cover 3. By controlling the extension and contraction of the electric push rods 5, the sealing cover 3 can be raised and lowered, thereby facilitating the addition or cleaning of plastic particles in the hopper 2;

[0034] This application can be used for material guiding in injection molding machines, and can also be used in other fields applicable to this application.

[0035] Example 2, reference Figure 1-Figure 4 , improved on the basis of Example 1: a material guiding device for an injection molding machine, which is used in the field of injection molding machine technology, the hopper 2 is made of a transparent acrylic plate, which is convenient for observing the mixing of plastic particles in the hopper 2, and a sealing gasket 18 is fixed at the bottom end of the sealing cover 3 to enhance the sealing between the sealing cover 3 and the hopper 2.

[0036] However, as is well known to those skilled in the art, the working principles and wiring methods of the electric push rod 5 and the drive motor 10 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A material guiding device for an injection molding machine, comprising: A sealing cover (3) is provided at the top of the hopper of the injection molding machine, wherein a main rotating shaft (6) is rotatably installed in the sealing cover (3), and a stirring assembly for uniformly stirring a plurality of plastic particles is provided on the surface of the main rotating shaft (6); the main rotating shaft (6) is characterized in that a shaking assembly is installed in the main rotating shaft (6), and the shaking assembly includes a tubular space (13) which is opened in the main rotating shaft (6) and passes through downward, and a slide rod (8) is slidably installed in the tubular space (13), and the lower end of the slide rod (8) extends out of the main rotating shaft (6) ) at the lower end, a through groove (14) communicating with the tubular space (13) is provided in the main shaft (6), a connecting rod (15) is fixed on the sliding rod (8), and the connecting rod (15) extends out of the through groove (14), a mounting groove (19) is provided in the sealing cover (3), a positioning ring (16) is fixed in the mounting groove (19), and the top end of the positioning ring (16) is formed with an undulating arc-shaped edge (17), and the connecting rod (15) is hung on the arc-shaped edge (17).

2. The material guiding device of an injection molding machine according to claim 1, characterized in that: The injection molding machine comprises a screw conveyor (1), a hopper (2) connected to a feed port of the screw conveyor (1) is fixed at the top of the screw conveyor (1), and the hopper (2) is used to accommodate a variety of plastic particles; a sealing cover (3) for sealing the hopper (2) is provided on the upper side of the hopper (2), and a group of lifting components are provided on the side wall of the hopper (2), and the lifting components are used to control the lifting of the sealing cover (3).

3. The material guiding device of an injection molding machine according to claim 1, characterized in that: The stirring assembly comprises a plurality of stirring blades (7), which are evenly spaced and fixed on the surface of the main rotating shaft (6). A driving motor (10) is fixed to the top end of the sealing cover (3), and the driving motor (10) is fixedly connected to the main rotating shaft (6) via a coupling.

4. The material guiding device of an injection molding machine according to claim 3, characterized in that: The shaking assembly further includes a receiving groove (11) opened at the top end of the slide rod (8), a return spring (12) is fixed in the receiving groove (11), and the other end of the return spring (12) is fixedly connected to the top of the tubular space (13).

5. The material guiding device of an injection molding machine according to claim 3, characterized in that: A plurality of material shifting rods (9) are fixed to the surface of the slide rod (8), and the material shifting rods (9) are located at the lower end of the slide rod (8).

6. The material guiding device of an injection molding machine according to claim 2, characterized in that: The lifting assembly comprises a fixing ring (4) fixed to the surface of the hopper (2), electric push rods (5) are fixed on both sides of the fixing ring (4), and the output ends of the two electric push rods (5) are fixedly connected to the lower side of the sealing cover (3).

7. The material guiding device for an injection molding machine according to claim 1, characterized in that: The hopper (2) is made of a transparent acrylic sheet.

8. The material guiding device for an injection molding machine according to claim 1, characterized in that: A sealing gasket (18) is fixed to the bottom end of the sealing cover (3).

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