Guide structure of injection molding machine

Abstract

The utility model discloses an injection molding machine material guiding structure which comprises an injection molding machine body, a feeding hopper is arranged at the top end of the injection molding machine body, a fixing frame is arranged at the position, corresponding to the feeding hopper, of the outer side of the injection molding machine body, a plurality of telescopic rods are fixedly connected to the fixing frame, and the outer portions of the telescopic rods are all sleeved with first compression springs. The top ends of the multiple telescopic rods are fixedly connected with a receiving hopper, the bottom end of the receiving hopper communicates with a discharging pipe, a circular groove is formed in the fixing frame, the discharging pipe is located in the circular groove, a valve is installed on the discharging pipe, a storage box is placed on one side of the fixing frame, a guiding mechanism is installed in the storage box, and a vertical plate is fixedly connected to the bottom end of the receiving hopper. A normally-closed pressure switch is mounted at the top end of the fixing frame and corresponds to the vertical plate, so that the amount of injection molding materials conveyed into the feeding hopper on the injection molding machine body can be conveniently controlled, and the use practicability of the injection molding machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, and more particularly to a material guiding structure of an injection molding machine. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal and all-electric types. The working principle of the injection molding machine is similar to that of a syringe used for injections. It uses the thrust of the screw to inject the plasticized molten plastic into a closed mold cavity, and obtains the product after solidification and shaping.

[0003] Most existing injection molding machines are equipped with a hopper on the upper side. Due to the high height of the hopper, it is inconvenient for people to add injection molding materials into the hopper. Therefore, a material guide structure is required to transport the materials in the storage box placed on the ground to the hopper. The existing material guide structure is not convenient for controlling the amount of material guided. Since the injection molding machine is in normal working condition, the material required between units is fixed. If the material guide structure transports a large amount of material between units, the material stored in the hopper will increase, which may easily cause the material in the hopper to overflow, thereby reducing its practicality.

[0004] In addition, the existing material guide structure is not convenient for screening materials, resulting in large particles of material entering the interior of the injection molding machine. Due to the large particle diameter, the large particles of material require a long time to melt, and the incompletely melted material affects the quality of the injection molded product. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the problems existing in the prior art, the present invention provides a material guiding structure for an injection molding machine to solve the technical problem mentioned in the background art that the material guiding structure is not convenient for controlling the amount of the guided material, thereby reducing the practicality of its use.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a material guiding structure of an injection molding machine, comprising an injection molding machine body, a feeding hopper is provided at the top of the injection molding machine body, a fixed frame is provided at a position corresponding to the feeding hopper on the outside of the injection molding machine body, a plurality of telescopic rods are fixedly connected to the fixed frame, the outsides of the plurality of telescopic rods are all sleeved with a first compression spring, the tops of the plurality of telescopic rods are fixedly connected to a receiving hopper, the bottom end of the receiving hopper is connected to a discharge pipe, a circular groove is provided on the fixed frame, the discharge pipe is located inside the circular groove, a valve is installed on the discharge pipe, a storage box is placed on one side of the fixed frame, a material guiding mechanism is installed inside the storage box, the bottom end of the receiving hopper is fixedly connected to a vertical plate, a normally closed pressure switch is installed at the top of the fixed frame at a position corresponding to the vertical plate, the circuit of the normally closed pressure switch is connected in series with the circuit of the material guiding mechanism, a triangular through groove is provided at the side end of the vertical plate, and a positioning mechanism is connected at the top of the fixed frame at a position corresponding to the triangular through groove, so as to facilitate control of the amount of injection molding material delivered to the inside of the feeding hopper on the injection molding machine body, thereby improving its practicality.

[0009] The utility model is further configured as follows: the positioning mechanism includes a fixed seat, a slide groove is provided at the side end of the fixed seat, a slide plate is provided inside the slide groove for sliding, an end of the slide plate close to the vertical plate is fixedly connected to a connecting plate, the connecting plate slides with the fixed seat, and an end of the connecting plate extending to the outside of the fixed seat is fixedly connected to a triangular bar adapted to the triangular through groove, the other end of the slide plate is connected to two second compression springs, the other ends of the two second compression springs are connected to a mounting plate, and the mounting plate is connected to the fixed seat by screws, which is convenient for positioning the vertical plate and the material receiving hopper.

[0010] The utility model is further configured as follows: the material guiding mechanism includes a material guiding pipe, and a certain gap is left between the bottom end of the material guiding pipe and the bottom end of the inside of the material storage box, so that the material flows to the bottom of the material guiding pipe, the material guiding pipe is fixedly connected to the material storage box, and the material guiding pipe is fixedly connected to the fixing frame. A motor is installed on the top of the material guiding pipe, and the output end of the motor is fixedly connected to the material guiding shaft, and the outside of the material guiding shaft is fixedly connected to a spiral blade, and the upper side of the side end of the material guiding pipe is connected to a discharge pipe extending to the upper side of the receiving hopper, so as to facilitate the transportation of the injection molding material inside the storage box to the inside of the receiving hopper.

[0011] The utility model is further configured such that the top end of the fixing frame is located below the receiving hopper and is fixedly connected to a limiting column, thereby limiting the receiving hopper.

[0012] The present invention is further configured such that a material guide seat is fixedly connected to the inner bottom side of the material storage box, so as to facilitate the material inside the material storage box to slide to the bottom of the material guide pipe.

[0013] The present invention is further configured such that a rubber head is fixedly connected to the bottom end of the vertical plate at a position corresponding to the normally closed pressure switch, thereby protecting the normally closed pressure switch.

[0014] The utility model is further configured such that a screening box is provided inside the storage box, and a plurality of hooks are fixedly connected to the side ends of the screening box, and the plurality of hooks are all hung on the storage box, so as to facilitate screening out large particles of material.

[0015] The utility model is further configured such that two handles are fixedly connected to the top of the screening box, and the screening box can be lifted out by the handles to facilitate screening out large particles of material inside the screening box.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the present invention provides a material guide structure for an injection molding machine, which has the following beneficial effects:

[0018] 1. By controlling the opening of the valve, it is convenient to control the amount of injection molding material discharged from the receiving hopper to the inside of the receiving hopper. As the amount of material transported to the inside of the receiving hopper by the material guiding mechanism increases, due to the increase in the weight of the receiving hopper and the injection molding material, the multiple first compression springs will shrink under pressure. When the vertical plate squeezes the normally closed pressure switch, the normally closed pressure switch will be disconnected, causing the circuit of the material guiding mechanism to be disconnected, and the material guiding mechanism will stop working, avoiding excessive overflow of the injection molding material transported to the inside of the receiving hopper, thereby facilitating the control of the amount of material transported to the inside of the injection molding machine body and improving its practicality.

[0019] 2. When the vertical plate squeezes the normally closed pressure switch, the positioning mechanism is inserted into the inside of the triangular through groove and positions the vertical plate. When the amount of injection molding material inside the receiving hopper is reduced by a large amount, the thrust of the multiple first compression springs connecting the hopper and the vertical plate can overcome the force of the positioning mechanism on the vertical plate and the receiving hopper, and push the receiving hopper and the vertical plate upward to separate the vertical plate from the normally closed pressure switch, so that the circuit of the receiving mechanism is connected, and the receiving mechanism continues to transport material to the inside of the receiving hopper. This avoids the situation where the multiple first compression springs can push the receiving hopper and the vertical plate upward after the material inside the hopper is reduced a little, avoids the vertical plate from being squeezed and separated from the normally closed pressure switch in a short time, avoids the material guiding mechanism from frequently starting and stopping in a short time, and ensures the service life of the material guiding mechanism.

[0020] 3. Place the screening box inside the storage box by hanging it on the hook. People add materials into the screening box and screen out large particles in the materials through the screening box to prevent large particles from being transported to the inside of the injection molding machine body, ensuring that all materials inside the injection molding machine body can be melted and the quality of the injection molded products can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front structural diagram of a material guide structure of an injection molding machine in the present utility model;

[0022] Figure 2This is a schematic diagram of the structure of the connection between the fixed frame, the material receiving hopper and the positioning mechanism in the utility model;

[0023] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the positioning mechanism and the vertical plate in the present utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the material storage box, the material screening box and the material guide mechanism in the utility model;

[0025] Figure 5 It is a structural schematic diagram of the material guiding mechanism in the utility model.

[0026] In the figure: 1. Injection molding machine body; 2. Feeding hopper; 3. Fixed frame; 4. Telescopic rod; 5. First compression spring; 6. Feeding hopper; 7. Discharge pipe; 8. Circular groove; 9. Valve; 10. Storage box; 11. Vertical plate; 12. Normally closed pressure switch; 13. Triangular through groove; 14. Fixed seat; 15. Slide; 16. Slide plate; 17. Connecting plate; 18. Triangular bar; 19. Second compression spring; 20. Mounting plate; 21. Guide pipe; 22. Motor; 23. Guide shaft; 24. Spiral blade; 25. Discharge pipe; 26. Limit column; 27. Guide seat; 28. Rubber head; 29. Screen box; 30. Hook; 31. Handle. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0030] See also Figure 1-5, a material guiding structure of an injection molding machine, including an injection molding machine body 1, a feeding hopper 2 is provided at the top of the injection molding machine body 1, a fixing frame 3 is provided at a position corresponding to the feeding hopper 2 on the outside of the injection molding machine body 1, a plurality of telescopic rods 4 are fixedly connected to the fixing frame 3, and a first compression spring 5 is sleeved on the outside of the plurality of telescopic rods 4, and a material receiving hopper 6 is fixedly connected to the top of the plurality of telescopic rods 4, and the bottom end of the material receiving hopper 6 is connected to a discharge pipe 7, a circular groove 8 is provided on the fixing frame 3, and the discharge pipe 7 is located inside the circular groove 8, and the discharge pipe 7 is installed with a valve 9, a material storage box 10 is placed on one side of the fixing frame 3, and a material guiding mechanism is installed inside the material storage box 10, and the bottom end of the material receiving hopper 6 is fixedly connected to a vertical plate 11, and the bottom end of the vertical plate 11 is connected to the normally closed pressure The position corresponding to the force switch 12 is fixedly connected with a rubber head 28, which plays a role in protecting the normally closed pressure switch 12. The normally closed pressure switch 12 is installed at the position corresponding to the top of the fixing frame 3 and the vertical plate 11. The circuit of the normally closed pressure switch 12 is connected in series with the circuit of the material guiding mechanism. The top of the fixing frame 3 is located below the material receiving hopper 6 and is fixedly connected with a limiting column 26. When the vertical plate 11 squeezes the normally closed pressure switch 12, the top of the limiting column 26 contacts the bottom end of the material receiving hopper 6 to prevent the vertical plate 11 from exerting too much pressure on the normally closed pressure switch 12 and damaging the normally closed pressure switch 12. A triangular through groove 13 is provided at the side end of the vertical plate 11, and a positioning mechanism is connected to the position corresponding to the top of the fixing frame 3 and the triangular through groove 13.

[0031] Specifically, by controlling the opening of the valve 9, it is convenient to control the amount of injection molding material discharged from the receiving hopper 6 to the inside of the receiving hopper 6. As the material conveyed to the inside of the receiving hopper 6 by the material guiding mechanism increases, due to the increase in the weight of the receiving hopper 6 and the injection molding material, the multiple first compression springs 5 will shrink under pressure. When the vertical plate 11 squeezes the normally closed pressure switch 12, the normally closed pressure switch 12 will be disconnected, causing the circuit of the material guiding mechanism to be disconnected, and the material guiding mechanism will stop working, avoiding excessive overflow of the injection molding material conveyed to the inside of the receiving hopper 6, thereby facilitating the control of the amount of material conveyed to the inside of the injection molding machine body 1, and improving its practicality. When the vertical plate 11 squeezes the normally closed pressure switch 12, the positioning mechanism is inserted into the inner part of the triangular through groove 13. The first compression springs 5 push the material receiving hopper 6 and the vertical plate 11 upward after the amount of injection molding material inside the material receiving hopper 6 is reduced by a large amount, and the thrust of the multiple first compression springs 5 on the material receiving hopper 6 and the vertical plate 11 can overcome the force of the positioning mechanism on the vertical plate 11 and the material receiving hopper 6, and push the material receiving hopper 6 and the vertical plate 11 upward to separate the vertical plate 11 from the normally closed pressure switch 12, so that the circuit of the material receiving mechanism is connected, and the material receiving mechanism continues to transport material to the inside of the material receiving hopper 6. This avoids the situation that the multiple first compression springs 5 can push the material receiving hopper 6 and the vertical plate 11 upward after the material inside the material receiving hopper 6 is reduced a little, and avoids the vertical plate 11 from being squeezed and separated from the normally closed pressure switch 12 in a short time, and avoids the material guiding mechanism from being frequently started and stopped in a short time, thereby ensuring the service life of the material guiding mechanism.

[0032] See also Figure 2 and Figure 3 The positioning mechanism includes a fixed seat 14, a slide groove 15 is provided at the side end of the fixed seat 14, and a slide plate 16 is provided inside the slide groove 15 for sliding. The end of the slide plate 16 close to the vertical plate 11 is fixedly connected to a connecting plate 17, and the connecting plate 17 slides with the fixed seat 14. The end of the connecting plate 17 extending to the outside of the fixed seat 14 is fixedly connected to a triangular bar 18 adapted to the triangular through groove 13. The other end of the slide plate 16 is connected to two second compression springs 19, and the other ends of the two second compression springs 19 are connected to a mounting plate 20. The mounting plate 20 is connected to the fixed seat 14 by screws, which is convenient for positioning the vertical plate 11 and the hopper 6.

[0033] Specifically, the second compression spring 19 pushes the slide plate 16 , the connecting plate 17 and the triangular bar 18 to move toward the side close to the vertical plate 11 , and the triangular bar 18 is inserted into the triangular through groove 13 to position the vertical plate 11 and the receiving hopper 6 .

[0034] See also Figure 4 and Figure 5 The material guiding mechanism includes a material guiding pipe 21. A certain gap is left between the bottom end of the material guiding pipe 21 and the bottom end of the material storage box 10, so that the material flows to the bottom of the material guiding pipe 21. The material guiding pipe 21 is fixedly connected to the material storage box 10, and the material guiding pipe 21 is fixedly connected to the fixing frame 3. A motor 22 is installed on the top of the material guiding pipe 21. The motor 22 circuit is connected in series with the circuit of the normally closed pressure switch 12. The output end of the motor 22 is fixedly connected to the material guiding shaft 23, and the outside of the material guiding shaft 23 is fixedly connected to the spiral blade 24. The upper side of the side end of the material guiding pipe 21 is connected to a discharge pipe 25 extending to the upper side of the material receiving hopper 6, and the inner bottom side of the material storage box 10 is fixedly connected to a material guiding seat 27, which makes it easy for the material inside the storage box 10 to slide to the bottom of the material guiding pipe 21.

[0035] Specifically, the motor 22 drives the guide shaft 23 to rotate, and the guide shaft 23 drives the spiral blade 24 to rotate, so that the material inside the storage box 10 is transported upward from the inside of the guide pipe 21, and the material on the upper side of the inside of the conveying material guide pipe 21 falls into the inside of the receiving hopper 6 through the discharge pipe 25.

[0036] See also Figure 4 A screening box 29 is provided inside the storage box 10. A plurality of hooks 30 are fixedly connected to the side ends of the screening box 29. The plurality of hooks 30 are all hung on the storage box 10. Two handles 31 are fixedly connected to the top of the screening box 29. The handles 31 facilitate the lifting of the screening box 29, the screening box 29 can be easily lifted, the large particles of material inside the screening box 29 can be easily screened out, and the large particles of material inside the screening box 29 can be easily poured out.

[0037] Specifically, the screening box 29 is placed inside the storage box 10 by hanging it on the hook 30. People add materials into the screening box 29, and the large particles in the materials are screened out by the screening box 29 to prevent the large particles from being transported to the inside of the injection molding machine body 1, thereby ensuring that all the materials inside the injection molding machine body 1 can be melted and the quality of the injection molded products can be guaranteed.

[0038] In summary, when the overall equipment is in use:

[0039] The screen box 29 is placed inside the storage box 10 by hanging it on the hook 30, and people add materials into the screen box 29. The large particles in the materials are screened out by the screen box 29, and the small particles fall into the storage box 10. The guide shaft 23 is driven by the motor 22 to rotate, and the guide shaft 23 drives the spiral blade 24 to rotate, so that the material inside the storage box 10 is transported upward from the inside of the guide pipe 21. The material on the upper side of the conveying mass guide pipe 21 falls into the inside of the hopper 6 through the discharge pipe 25, and the material inside the hopper 6 falls into the inside of the hopper 2 on the injection molding machine body 1 through the discharge pipe 7. The opening of the control valve 9 is adjusted to control the amount of material discharged from the inside of the discharge pipe 7 to the inside of the feeding hopper 2. Since the amount discharged from the material guide mechanism to the inside of the receiving hopper 6 is greater than the amount discharged from the material discharge pipe 7 to the inside of the feeding hopper 2, during use, the amount of material inside the receiving hopper 6 will continue to increase. When the material inside the receiving hopper 6 reaches a certain amount, the weight of the receiving hopper 6 and the material is greater than the elastic force of the multiple first compression springs 5, and the force of the vertical plate 11 pushing the oblique side of the triangular bar 18 can overcome the force of the second compression spring 19, so that the triangular bar 18 slides toward the inside of the fixed seat 14, thereby causing the vertical plate 11 and the receiving hopper 6 to move downward, and the rubber head 2 8 squeezes the normally closed pressure switch 12. At this time, the normally closed pressure switch 12 is in the disconnected state, causing the line connected to the motor 22 to be disconnected, so that the motor 22 stops working and stops conveying materials to the inside of the receiving hopper 6. At this time, the top of the limit column 26 contacts the bottom of the receiving hopper 6, and the position of the triangular bar 18 corresponds to the position of the triangular through groove 13. The slide plate 16, the connecting plate 17 and the triangular bar 18 are pushed by the second compression spring 19 to move, so that the triangular bar 18 positions the vertical plate 11. At this time, the material inside the receiving hopper 6 is continuously conveyed to the inside of the feeding hopper 2. When the material inside the receiving hopper 6 is less, multiple first compression springs The force exerted on the hopper 6 is greater than the combined weight of the hopper 6 and the material, and the force difference causes the triangular groove 13 to squeeze the triangular bar 18 toward the fixed seat 14, and causes the triangular bar 18 to move vertically to one side of the vertical plate 11, thereby pushing the hopper 6 upward. At this time, the rubber head 28 separates from the normally closed pressure switch 12, and the normally closed pressure switch 12 is in the closed state again, thereby conducting the circuit connected to the motor 22, thereby operating the motor 22 and continuing to feed the material into the hopper 6, thereby ensuring that the amount of material fed into the hopper 2 of the injection molding machine body 1 is controlled and that the material feeding is continuous.

[0040] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A material guide structure for an injection molding machine, comprising an injection molding machine body (1), a feeding hopper (2) being provided at the top of the injection molding machine body (1), and characterized in that: A fixing frame (3) is provided on the outside of the injection molding machine body (1) at a position corresponding to the feeding hopper (2), a plurality of telescopic rods (4) are fixedly connected to the fixing frame (3), the outsides of the plurality of telescopic rods (4) are sleeved with a first compression spring (5), the top ends of the plurality of telescopic rods (4) are fixedly connected to a receiving hopper (6), the bottom end of the receiving hopper (6) is connected to a discharge pipe (7), a circular groove (8) is provided on the fixing frame (3), the discharge pipe (7) is located inside the circular groove (8), and a valve (9) is installed on the discharge pipe (7), A material storage box (10) is placed on one side of the frame (3), and a material guide mechanism is installed inside the material storage box (10). The bottom end of the material receiving hopper (6) is fixedly connected to a vertical plate (11). A normally closed pressure switch (12) is installed at a position corresponding to the top of the fixed frame (3) and the vertical plate (11). The circuit of the normally closed pressure switch (12) is connected in series with the circuit of the material guide mechanism. A triangular through groove (13) is provided at the side end of the vertical plate (11), and a positioning mechanism is connected to a position corresponding to the top of the fixed frame (3) and the triangular through groove (13).

2. The material guiding structure of an injection molding machine according to claim 1, characterized in that: The positioning mechanism includes a fixed seat (14), a sliding groove (15) is provided at the side end of the fixed seat (14), a slide plate (16) is slidably provided inside the slide plate (15), and an end of the slide plate (16) close to the vertical plate (11) is fixedly connected to a connecting plate (17), and the connecting plate (17) is slidably matched with the fixed seat (14). One end of the connecting plate (17) extending to the outside of the fixed seat (14) is fixedly connected to a triangular bar (18) adapted to the triangular through groove (13), and the other end of the slide plate (16) is connected to two second compression springs (19), and the other ends of the two second compression springs (19) are connected to a mounting plate (20), and the mounting plate (20) is connected to the fixed seat (14) by screws.

3. The material guiding structure of an injection molding machine according to claim 1, characterized in that: The material guiding mechanism comprises a material guiding pipe (21), the material guiding pipe (21) is fixedly connected to the material storage box (10), a motor (22) is installed at the top end of the material guiding pipe (21), the output end of the motor (22) is fixedly connected to a material guiding shaft (23), the outside of the material guiding shaft (23) is fixedly connected to a spiral blade (24), and the upper side of the side end of the material guiding pipe (21) is connected to a material discharging pipe (25) extending to the upper side of the receiving hopper (6).

4. The material guiding structure of an injection molding machine according to claim 1, wherein: The top end of the fixing frame (3) is located below the receiving hopper (6) and is fixedly connected to a limiting column (26).

5. The material guiding structure of an injection molding machine according to claim 1, characterized in that: A material guide seat (27) is fixedly connected to the inner bottom side of the material storage box (10).

6. The material guiding structure of an injection molding machine according to claim 1, characterized in that: A rubber head (28) is fixedly connected to the bottom end of the vertical plate (11) at a position corresponding to the normally closed pressure switch (12).

7. The material guiding structure of an injection molding machine according to claim 1, characterized in that: A screening box (29) is provided inside the material storage box (10), and a plurality of hooks (30) are fixedly connected to the side ends of the screening box (29), and the plurality of hooks (30) are all hung on the material storage box (10).

8. The material guiding structure of an injection molding machine according to claim 7, characterized in that: Two handles (31) are fixedly connected to the top of the screening box (29).

Images