Feeding equipment for injection molding machine
By introducing vibration screening and air separation mechanisms into the feeding equipment of injection molding machines, the problem of impurities mixed in with plastic particles has been solved, product quality has been improved, and the defect rate and economic losses have been reduced.
Patent Information
- Application Number
- CN202422909304.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-11-27
AI Technical Summary
During the feeding process of an injection molding machine, plastic particles are easily mixed with impurities, leading to quality problems and a high defect rate in the processed products.
A feeding device with a removal mechanism was designed, including a vibration screening mechanism and an air separation mechanism. Vibration screening removes large-diameter impurities, while air separation removes small-diameter impurities, ensuring the purity of the plastic particles.
It effectively removes impurities from plastic granules, improves the quality of injection molded products, reduces the defect rate, and minimizes economic losses.
Smart Images
Figure CN223685888U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to injection molding equipment technical field, concretely relates to a kind of feeding equipment for injection molding machine. BACKGROUND
[0002] Injection molding machine is also named injection molding machine or injection machine, it is the main molding equipment of thermoplastic or thermosetting plastic into various shapes of plastic products using plastic molding die, divided into vertical, horizontal, full electric. Injection molding machine can heat plastic, high pressure is applied to molten plastic, so that it fills the mold cavity.
[0003] When injection molding machine is injection molded, the plastic particles need to be fed. However, the plastic particles are easy to be mixed with impurities during production and processing. The source of the impurities may be due to the fact that the raw materials are not clean during processing, the granulation is not pure, the raw materials are mixed with color masterbatch or spotted crushed blocks, and the like. Alternatively, the plastic particles are mixed with impurities during packaging, transportation and storage. If these impurities are not cleaned, they will be melted together with the plastic particles, resulting in quality problems of the processed products, high rate of defective products and direct economic losses.
[0004] Therefore, it needs to be improved. CONTENT OF UTILITY MODEL
[0005] In view of the above defects existing in the prior art, the utility model provides a kind of feeding equipment for injection molding machine, including impurity removing device, first screw conveyor, second screw conveyor and injection molding machine, impurity removing device includes box, vibrating screening mechanism and winnowing mechanism, the top of box is provided with feeding port, the bottom of box is provided with discharge port, the inside of box is separated into upper cavity and lower cavity by inclined plate, and the low end of inclined plate is connected with guide pipe, the left and right sides of upper cavity are respectively provided with limiting slot, and a plurality of guide rods are vertically arranged in limiting slot.
[0006] Vibrating screening mechanism is arranged in the upper cavity of box, and vibrating screening mechanism includes bracket, filter frame and vibration motor, bracket is U-shaped, and bracket includes mounting plate arranged at left and right ends and a plurality of connecting rods fixed between the two mounting plates, the outer end of mounting plate is fixed with a plurality of connecting blocks same as the number of guide rods, a plurality of connecting blocks are located in limiting slot, and a plurality of guide rods correspondingly penetrate a plurality of connecting blocks, filter frame is fixed above bracket by bolts, convenient to disassemble, the shape of filter frame matches the shape of bracket, a plurality of filter holes are arranged on filter frame, the aperture of filter hole is larger than the particle size of plastic particles, for filtering out large particle size impurities in plastic particles;Vibration motor is arranged below bracket, the output shaft of vibration motor is vertically upward and fixedly connected with vibration rod, the top end of vibration rod is provided with horizontal vibration plate, and the top surface of vibration plate is close to the bottom of bracket;Winnowing mechanism is used for air selection and impurity removal of plastic particles.
[0007] The discharge port of the first screw conveyor is connected with the feeding port of the box body, the feeding port of the second screw conveyor is connected with the discharge port of the box body, the top of the injection molding machine is provided with a feeding port, and the feeding port is connected with the discharge port of the second screw conveyor.
[0008] Optionally, the plurality of connecting rods are arranged at intervals, and the interval between the adjacent two connecting rods is greater than the pore diameter of the filter hole of the filter frame.
[0009] Optionally, the bottom of the vibration motor is fixed with a support frame, and one end of the support frame is fixed on the inner wall of the box body.
[0010] Specifically, the support frame is provided with a leakage hole, which does not affect the discharging.
[0011] Optionally, springs are connected between the top surface of the connecting block and the top wall of the limiting groove, and between the bottom surface of the connecting block and the bottom wall of the limiting groove.
[0012] Specifically, the spring can well buffer the vibration of the bracket.
[0013] Optionally, the winnowing mechanism comprises a conical cavity arranged in the lower cavity of the box body, and a fan and a collection box arranged outside the box body, the top of the conical cavity is a large end face, the bottom is a small end face, the large end face of the conical cavity is in communication with the material guide pipe, the small end face of the conical cavity is connected with the discharge port, the fan and the collection box are arranged on the left and right sides of the box body, the air outlet end of the fan is connected with an air pipe, the air pipe passes through the box body and is in communication with the left end of the conical cavity, the collection box is connected with a connecting pipe, the connecting pipe passes through the box body and is in communication with the right end of the conical cavity, and a dust collecting port is arranged at the connecting port between the connecting pipe and the conical cavity.
[0014] Optionally, the connecting port between the air pipe and the conical cavity and the dust collecting port are opposite to each other, and a filter screen is arranged at the dust collecting port.
[0015] Specifically, the pore diameter of the filter screen is smaller than the particle size of the plastic particles, so as to filter out the small particle size impurities in the plastic particles.
[0016] Optionally, the bottom of the box body is provided with a slope, and the low end of the slope corresponds to the discharge port.
[0017] The utility model also includes other components that can make the feeding equipment for injection molding machine normal use, all are conventional technical means in the art. In addition, the devices or components not limited in the utility model all adopt conventional technical means in the art, such as vibration motor, fan, first screw conveyor, second screw conveyor and injection molding machine etc.
[0018] The utility model discloses a working principle is, in use, plastic particles enter the inside of the box through the conveying of first spiral conveyor, and drop in the filter frame, start vibration motor, drive vibration rod and vibration board up and down vibration, and then push the bracket and filter frame and vibrate, and the guide rod can provide the guidance and the limit for the up and down movement of connecting block, guarantee that the bracket and filter frame can only vibrate up and down, and the spring can play the good buffering effect, after vibrating sieve division, the large size impurity in plastic particles is filtered out, and plastic particles drop on the inclined plate through the filter hole of filter frame, and enter the conical cavity through the material guide pipe, start the fan and blow the plastic particles in conical cavity, blow out the light, small size impurity mixed in plastic particles, and the impurity passes through the filter screen and gathers to the dust collecting port, and finally through the connecting pipe and enter the collection box and collect, in order to better absorb the impurity, can set up the air blower on the connecting pipe, so that the impurity can be smoothly absorbed into the collection box, and plastic particles drop on the inclined plane at the bottom through the discharge port, and roll into the second spiral conveyor along the inclined plane, and then enter the injection molding machine and carry on injection molding through the conveying of second spiral conveyor.
[0019] The utility model discloses the beneficial effect is, when feeding to injection molding machine, through adding the impurity removal device with the impurity removal function, utilize vibrating screen mechanism and divide out the large size impurity in plastic particles, utilize winnowing mechanism and divide out the small size impurity in plastic particles, reduce the impurity with plastic particles together and enter injection molding machine, improve product quality, reduce the rate of defective products, reduce economic loss. DRAWINGS
[0020] The utility model is further explained in connection with the drawings and examples.
[0021] Figure 1 It is the whole structure schematic diagram of the utility model.
[0022] Figure 2 It is the structure schematic diagram of the impurity removal device of the utility model.
[0023] Figure 3 It is Figure 2 The enlarged schematic view of A department structure.
[0024] Figure 4 It is the structure schematic diagram of the bracket of the utility model.
[0025] As shown in the figure: 1. impurity removal device, 2. first screw conveyor, 3. second screw conveyor, 4. injection molding machine, 5. box, 6. feeding port, 7. discharge port, 8. inclined plate, 9. upper cavity, 10. lower cavity, 11. material guide pipe, 12. limiting groove, 13. guide rod, 14. bracket, 15. filter frame, 16. vibration motor, 17. mounting plate, 18. connecting rod, 19. connecting block, 20. vibration rod, 21. vibration plate, 22. support frame, 23. spring, 24. conical cavity, 25. fan, 26. collection box, 27. air pipe, 28. connecting pipe, 29. dust collection port, 30. slope. DETAILED DESCRIPTION
[0026] The utility model is described below in conjunction with the drawings and specific embodiments in the embodiments of the utility model, the description herein is only used to explain the utility model, but not as the limitation of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor, any modification, equivalent replacement, improvement etc. should be included in the protection scope of the utility model.
[0027] EMBODIMENT
[0028] As Figures 1-4 shown, the utility model embodiment provides a kind of feeding equipment for injection molding machine, including impurity removal device 1, first screw conveyor 2, second screw conveyor 3 and injection molding machine 4, impurity removal device 1 includes box 5, vibration screening mechanism and winnowing mechanism, the top of box 5 is provided with feeding port 6, the bottom of box 5 is provided with discharge port 7, the inside of box 5 is divided into upper cavity 9 and lower cavity 10 by inclined plate 8, and the low end of inclined plate 8 is connected with material guide pipe 11, the left and right sides of upper cavity 9 are respectively provided with limiting groove 12, and two guide rods 13 are respectively vertically arranged in each limiting groove 12.
[0029] The vibration screening mechanism is arranged in the upper cavity 9 of the box body 5, and comprises a bracket 14, a filtering frame 15 and a vibration motor 16. The bracket 14 is in a U shape and comprises mounting plates 17 arranged at left and right ends and connecting rods 18 fixed between the two mounting plates 17. The outer end of each mounting plate 17 is fixed with two connecting blocks 19, respectively. The two connecting blocks 19 on each side are arranged in the limiting groove 12 on the corresponding side, and the two guide rods 13 on each side penetrate through the two connecting blocks 19 on the corresponding side. The filtering frame 15 is fixed above the bracket 14 by bolts, facilitating disassembly and assembly. The filtering frame 15 is matched with the bracket 14 in shape. The filtering frame 15 is provided with a plurality of filtering holes. The diameter of the filtering holes is greater than the particle size of the plastic particles, so as to filter out large-particle impurities in the plastic particles. The vibration motor 16 is arranged below the bracket 14. The output shaft of the vibration motor 16 is vertically upward and fixedly connected with a vibration rod 20. The top end of the vibration rod 20 is provided with a horizontal vibration plate 21. The top surface of the vibration plate 21 is close to the bottom of the bracket 14.
[0030] In addition, the plurality of connecting rods 18 are arranged at intervals, and the spacing between the adjacent two connecting rods 18 is greater than the diameter of the filtering holes of the filtering frame 15. The bottom of the vibration motor 16 is fixed with a support frame 22, one end of the support frame 22 is fixed on the inner wall of the box body 5, and a material leakage hole is arranged on the support frame 22, so as not to affect the discharging. The top surface of the connecting block 19 and the top wall of the limiting groove 12 and the bottom surface of the connecting block 19 and the bottom wall of the limiting groove 12 are connected with springs 23, respectively. The springs 23 are sleeved on the outside of the guide rod 13. The springs 23 can well buffer the vibration of the bracket 14.
[0031] The winnowing mechanism comprises a conical cavity 24 arranged in the lower cavity 10 of the box body 5 and a fan 25 and a collection box 26 arranged outside the box body 5. The top of the conical cavity 24 is a large end face, and the bottom is a small end face. The large end face of the conical cavity 24 is connected with the material guide pipe 11. The small end face of the conical cavity 24 is connected with a discharging port. The fan 25 and the collection box 26 are arranged on the left and right sides of the box body 5. The fan 25 is connected with an air pipe 27. The air pipe 27 penetrates through the box body 5 and is connected with the left end of the conical cavity 24. The collection box 26 is connected with a connecting pipe 28. The connecting pipe 28 penetrates through the box body 5 and is connected with the right end of the conical cavity 24. A dust collecting port 29 is arranged at the connecting port between the connecting pipe 28 and the conical cavity 24.
[0032] In addition, the connecting port between the air pipe 27 and the conical cavity 24 is opposite to the dust collecting port 29. A filter screen is arranged at the dust collecting port 29. The diameter of the filter screen is smaller than the particle size of the plastic particles, so as to filter out small-particle impurities in the plastic particles. A slope 30 is arranged at the bottom of the box body 5. The low end of the slope 30 corresponds to the discharging port 7.
[0033] The discharge port of the first screw conveyor 2 is connected with the feeding port 6 of the box 5, the feeding port of the second screw conveyor 3 is connected with the discharge port 7 of the box 5, and the top of the injection molding machine 4 is provided with a feeding port connected with the discharge port of the second screw conveyor 3.
[0034] The working principle of the utility model is that, in use, the plastic particles are conveyed into the inside of the box 5 through the first screw conveyor 2, and fall into the filter frame 15, the vibration motor 16 is started, the vibration rod 20 and the vibration plate 21 are driven to vibrate up and down, the bracket 14 and the filter frame 15 are further pushed to vibrate, the guide rod 13 can provide guidance and limiting for the up and down movement of the connecting block 19, the bracket 14 and the filter frame 15 can only vibrate up and down, the spring 23 can have a good buffering effect, after vibration screening, the large-diameter impurities in the plastic particles are filtered out, the plastic particles fall onto the inclined plate 8 through the filter holes of the filter frame 15, and enter the conical cavity 24 through the guide pipe 11, the fan 25 is started to blow the plastic particles in the conical cavity 24, the light and small-diameter impurities mixed in the plastic particles are blown out, the impurities pass through the filter screen and gather at the dust collecting port 29, finally enter the collecting box 26 through the connecting pipe 28, in order to better absorb the impurities, the air blower can be arranged on the connecting pipe 28, so that the impurities can be smoothly absorbed into the collecting box 26, and the plastic particles fall onto the inclined slope 30 at the bottom through the discharge port, roll into the second screw conveyor 3 along the inclined slope 30, and then enter the injection molding machine 4 for injection molding through the conveying of the second screw conveyor 3; even if part of the plastic particles are blown to the filter screen, they can also be intercepted by the filter screen and fall onto the inclined slope 30 through the discharge port of the small end surface of the conical cavity 24, and finally enter the injection molding machine 4.
[0035] The above has described the embodiments of the utility model, the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A feeding device for an injection molding machine, comprising a dedusting device, a first screw conveyor, a second screw conveyor and an injection molding machine, characterized in that: The impurity removing device comprises a box, a vibrating screening mechanism and an air selection mechanism, the top of the box is provided with a feeding port, the bottom of the box is provided with a discharging port, the inside of the box is divided into an upper cavity and a lower cavity by an inclined plate, one end of the inclined plate is connected with a material guide pipe, the left and right sides of the upper cavity are respectively provided with limiting grooves, and a plurality of guide rods are vertically arranged in the limiting grooves. The vibrating screening mechanism is arranged in the upper cavity of the box, and comprises a bracket, a filter frame and a vibrating motor, the bracket is in a U shape, the bracket comprises mounting plates arranged at the left and right ends and a plurality of connecting rods fixed between the two mounting plates, the outer end of the mounting plate is fixed with a plurality of connecting blocks which are the same in number as the guide rods, the plurality of connecting blocks are located in the limiting grooves, and the plurality of guide rods respectively penetrate through the plurality of connecting blocks, the filter frame is fixed above the bracket by bolts, the shape of the filter frame matches the shape of the bracket, a plurality of filter holes are arranged on the filter frame, the vibrating motor is arranged below the bracket, the output shaft of the vibrating motor is vertically upward and fixedly connected with a vibrating rod, and the top end of the vibrating rod is provided with a horizontal vibrating plate, and the air selection mechanism is used for air selection and impurity removal of the material particles. The discharging port of the first screw conveyor is connected with the feeding port of the box, the feeding port of the second screw conveyor is connected with the discharging port of the box, and the top of the injection molding machine is provided with a feeding port which is connected with the discharging port of the second screw conveyor.
2. The material loading apparatus for an injection molding machine according to claim 1, wherein: The plurality of connecting rods are arranged at intervals, and the distance between the adjacent two connecting rods is greater than the hole diameter of the filter holes of the filter frame.
3. The material loading apparatus for an injection molding machine according to claim 2, wherein: The bottom of the vibrating motor is fixed with a support frame, and one end of the support frame is fixed on the inner wall of the box.
4. The material loading apparatus for an injection molding machine according to claim 3, wherein: The top surface of the connecting block and the top wall of the limiting groove, and the bottom surface of the connecting block and the bottom wall of the limiting groove are connected with springs.
5. The material loading apparatus for an injection molding machine according to claim 4, wherein: The air selection mechanism comprises a conical cavity arranged in the lower cavity of the box, and a fan and a collection box arranged outside the box, the top of the conical cavity is a large end face, the bottom is a small end face, the large end face of the conical cavity is connected with the material guide pipe, the small end face of the conical cavity is connected with a discharging port, the fan and the collection box are arranged on the left and right sides of the box, the air outlet end of the fan is connected with an air pipe, the air pipe penetrates through the box and is connected with the left end of the conical cavity, the collection box is connected with a connecting pipe, the connecting pipe penetrates through the box and is connected with the right end of the conical cavity, and a dust collecting port is arranged at the connecting port between the connecting pipe and the conical cavity.
6. The material loading apparatus for an injection molding machine according to claim 5, wherein: The connecting port between the air pipe and the conical cavity is opposite to the dust collecting port, and a filter screen is arranged at the dust collecting port.
7. The material loading apparatus for an injection molding machine according to claim 6, wherein: The bottom of the box is provided with a slope, and one end of the slope corresponding to the discharging port is low.