Polyurethane injection molding machine with weighing function

Abstract

The utility model discloses a polyurethane injection molding machine with a weighing function, which relates to the technical field of injection molding machines, and comprises a shell provided with a feeding end and a discharging end, and a rotating plate provided with a rotating shaft at one end, and a blanking channel for feeding materials to the feeding machine barrel is formed between the shell and the discharging end. During blanking, materials are fed into the shell through the feeding end and slide to the upper end of the rotating plate to be stacked, so that the pressure on the rotating plate is gradually increased until the pressure exceeds the magnetic attraction force of the magnetic attraction assembly on the rotating plate, and the rotating plate opens the blanking channel, so that the materials are fed into an injection machine barrel; when the material entering the shell does not reach enough amount, the pressure of the material on the rotating plate is small and is not enough to open the rotating plate, and the alarm switch can give an alarm when not touched for a period of time, so that a worker is prompted to continue feeding.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a polyurethane injection molding machine with a weighing function. Background Art

[0002] Polyurethane soles have the characteristics of light weight and good wear resistance. Injection molding machines are needed to produce soles. Injection molding machines generally include a feeder barrel and an injection barrel. The feeder barrel has an inlet and an outlet. The inlet is generally connected to a feeding device, and the outlet is connected to an injection barrel. A screw-shaped feeding structure is provided in the feeder barrel, and an injection plunger is provided inside the injection barrel. When in use, the polyurethane material is conveyed to the feed port outside the feeder barrel through the feeding device. The polyurethane material is fed into the injection barrel through the screw-shaped feeding mechanism, heated into a hot melt state by a heating ring, and then extruded by the injection plunger, and finally sprayed into the mold cavity through a nozzle located at one end of the injection barrel for molding.

[0003] The current technical problems are: During the injection molding process, it is often necessary to add materials to meet the purpose of continuous processing. However, due to negligence of personnel, the barrel is often short of materials. When it is discovered, it takes up to two hours to dry the materials before production can be resumed, which reduces processing efficiency and delays working hours. Utility Model Content

[0004] The utility model aims to provide a polyurethane injection molding machine with a weighing function to solve the technical problem that the injection molding machines on the market currently cannot promptly detect and remind the staff when the materials are insufficient, as mentioned in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a polyurethane injection molding machine with a weighing function, comprising a housing provided with a feeding end and a discharging end, the injection molding machine also comprising:

[0006] A rotating plate with a rotating shaft at one end, the rotating shaft is rotatably matched with a rotating groove provided in the shell, a material discharge channel for delivering the material to the feeder barrel is formed between the shell and the discharge end, and the rotating plate is used to open or close the material discharge channel;

[0007] An alarm switch is arranged on the inner wall of the housing and located on the rotation track of the rotating plate;

[0008] A magnetic attraction component is arranged in the shell, and the magnetic attraction component is used to generate a magnetic attraction force on the other end of the rotating plate so that the material discharge channel remains closed. When the weight of the material on the upper end of the rotating plate exceeds the magnetic attraction force, the rotating plate rotates to touch the alarm switch to temporarily close it and open the material discharge channel;

[0009] A reset component is used to drive the rotating plate to reset after the materials on the surface of the rotating plate are released.

[0010] As a preferred technical solution of the utility model, the magnetic attraction component includes:

[0011] an electromagnet disposed on the inner wall of the housing;

[0012] A metal plate is arranged on the surface of the rotating plate, and the electromagnet is used to adsorb the metal plate.

[0013] As a preferred technical solution of the utility model, the injection molding machine also includes a measuring component for detecting the height of the material at the upper end of the rotating plate to ensure that the rotating plate is rotated to open the material discharge channel only after the material height and weight meet the standards.

[0014] As a preferred technical solution of the present utility model, the measuring component is an infrared sensor arranged inside the shell.

[0015] As a preferred technical solution of the present utility model, the reset component is a first motor arranged outside the housing, and the output shaft of the first motor is connected to the rotating shaft.

[0016] As a preferred technical solution of the utility model, the injection molding machine also includes:

[0017] A scraper for leveling the material on the upper end of the rotating plate;

[0018] A movable frame and an electric telescopic rod arranged at the bottom of the movable frame, wherein the output end of the electric telescopic rod is connected to the scraper;

[0019] a second motor disposed at one end of the housing;

[0020] A screw rod has one end connected to the output shaft of the second motor, and the other end of the screw rod penetrates the side wall of the shell and extends into the shell, and the screw rod cooperates with a screw rod groove opened in the movable frame.

[0021] As a preferred technical solution of the utility model, a guide rod is provided on the inner wall of the shell, and the guide rod is slidably matched with a guide groove provided on the movable frame.

[0022] As a preferred technical solution of the utility model, the inner wall of the shell is provided with a horizontally inclined guide plate, the lower end of the guide plate is in contact with the rotating plate, and the infrared sensor is arranged on the surface of the guide plate.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] During unloading, the material is fed into the shell through the feed end, and the material slides to the upper end of the rotating plate and accumulates, thereby gradually increasing the pressure on the rotating plate. Until the pressure exceeds the magnetic attraction of the magnetic attraction component on the rotating plate, the rotating plate opens the unloading channel, thereby feeding the material into the injection barrel. When the material entering the shell does not reach a sufficient amount, the pressure of the material on the rotating plate is too small to open the rotating plate, and the alarm switch will sound if it is not touched for a period of time, thereby prompting the staff to continue adding material. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the external three-dimensional structure of the utility model;

[0026] Figure 2 It is a schematic diagram of a partially cutaway three-dimensional structure of the utility model;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the second motor, the lead screw and the movable frame of the utility model;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating plate and the guide plate of the utility model.

[0029] In the figure: 1. Shell; 2. Feed end; 3. Discharge end; 4. Rotating plate; 5. Rotating shaft; 6. First motor; 7. Electromagnet; 8. Metal plate; 9. Alarm switch; 10. Second motor; 11. Screw; 12. Movable frame; 13. Screw groove; 14. Guide rod; 15. Guide groove; 16. Electric telescopic rod; 17. Scraper; 18. Guide plate; 19. Infrared sensor. DETAILED DESCRIPTION

[0030] 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 of the embodiments.

[0031] See also Figure 1-Figure 4 The utility model provides a technical solution: a polyurethane injection molding machine with a weighing function, comprising a housing 1 provided with a feeding end 2 and a discharging end 3, the injection molding machine also comprises: a rotating plate 4 with a rotating shaft 5 at one end, the rotating shaft 5 is rotatably matched with a rotating groove provided in the housing 1, a feeding channel for feeding materials to a feeder barrel is formed between the housing 1 and the discharging end 3, the rotating plate 4 is used to open or close the feeding channel; an alarm switch 9 is provided on the inner wall of the housing 1 and located on the rotation track of the rotating plate 4; Figure 2 and Figure 4As shown, a magnetic attraction component is arranged in the housing 1, and the magnetic attraction component is used to generate a magnetic attraction force on the other end of the rotating plate 4 so that the material discharge channel remains closed. When the weight of the material on the upper end of the rotating plate 4 exceeds the magnetic attraction force, the rotating plate 4 rotates to touch the alarm switch 9 to temporarily close it and open the material discharge channel; in this embodiment, the magnetic attraction component includes: an electromagnet 7 arranged on the inner wall of the housing 1; a metal plate 8 arranged on the surface of the rotating plate 4, and the electromagnet 7 is used to adsorb the metal plate 8;

[0032] like Figure 1 As shown, the injection molding machine also includes a reset component for driving the rotating plate 4 to reset after the material on the surface of the rotating plate 4 is released; in this embodiment, the reset component is a first motor 6 arranged outside the housing 1, and the output shaft of the first motor 6 is connected to the rotating shaft 5;

[0033] The above technical solution can ensure sufficient material discharge. During material discharge, the material is fed into the shell 1 through the feed end 2, and the material slides to the upper end of the rotating plate 4 and accumulates, thereby gradually increasing the pressure on the rotating plate 4 until the pressure exceeds the magnetic attraction of the magnetic attraction component on the rotating plate. The rotating plate 4 opens the discharge channel to feed the material into the injection barrel. When the material entering the shell 1 is not sufficient, the pressure of the material on the rotating plate 4 is too small to open the rotating plate 4. The alarm switch 9 has the function of a delay switch, and the delay time can be set. If the alarm switch 9 is not touched for a period of time, it will sound, thereby prompting the staff to continue adding materials.

[0034] Further, such as Figure 2 and Figure 4 As shown, the injection molding machine also includes a measuring component for detecting the material height at the upper end of the rotating plate 4 to ensure that the rotating plate 4 is rotated to open the material discharge channel after the material height and weight meet the standards; the measuring component is an infrared sensor 19 disposed inside the housing 1;

[0035] The adoption of the above technical solution can further improve the detection accuracy and increase the opening conditions of the rotating plate 4. The rotating plate 4 is opened only when the material height and weight meet the requirements.

[0036] Further, such as Figure 2 and Figure 3 As shown, the injection molding machine also includes: a scraper 17 for flattening the material on the upper end of the rotating plate 4; a movable frame 12 and an electric telescopic rod 16 arranged at the bottom of the movable frame 12, the output end of the electric telescopic rod 16 is connected to the scraper 17; a second motor 10 arranged at one end of the housing 1; a screw rod 11 connected to the output shaft of the second motor 10 at one end, the other end of the screw rod 11 passes through the side wall of the housing 1 and extends into the housing 1, the screw rod 11 cooperates with the screw rod groove 13 opened in the movable frame 12; a guide rod 14 is arranged on the inner wall of the housing 1, and the guide rod 14 is slidably matched with the guide groove 15 opened in the movable frame 12;

[0037] Further, such as Figure 2 and 4 As shown, the inner wall of the housing 1 is provided with a horizontally inclined guide plate 18, the lower end of the guide plate 18 is in contact with the rotating plate 4, and the infrared sensor 19 is provided on the surface of the guide plate 18;

[0038] The above technical solution can prevent the material from piling up at a height that is too high and affecting the detection accuracy. The material is fed into the shell 1 through the feed end 2, and the material slides along the guide plate 18 to the upper end of the rotating plate 4 and accumulates. During this period, the second motor 10 drives the screw 11 to rotate forward and reverse, thereby driving the movable frame 12 to slide back and forth along the guide rod 14. The movable frame 12 drives the scraper 17 connected to it to flatten the material, and as the material accumulates more and more, the electric telescopic rod 16 will slowly drive the scraper 17 to rise to adapt to the height change of the material.

[0039] Working principle: When in use, first feed the material into the housing 1 through the feed end 2, and the material slides along the guide plate 18 to the upper end of the rotating plate 4 for accumulation. During this period, the second motor 10 drives the screw 11 to rotate forward and reverse, thereby driving the movable frame 12 to slide back and forth along the guide rod 14, and the movable frame 12 drives the scraper 17 connected thereto to flatten the material, and as the material accumulates more and more, the electric telescopic rod 16 will slowly drive the scraper 17 to rise to adapt to the height change of the material. When the height reaches the preset value, the magnetic attraction of the electromagnet 7 on the metal plate 8 gradually decreases until the magnetic attraction is reduced to the preset value. At this time, the weight of the material is greater than the preset magnetic attraction, so that the rotating plate 4 rotates, and the material on the rotating plate 4 enters the injection barrel along the feeding channel. At the same time, the rotating plate 4 will touch the alarm switch 9, thereby turning off the alarm for a period of time. When the material falls completely, the first motor 6 drives the rotating shaft 5 to rotate and reset, thereby driving the rotating plate 4 to reset, and the metal plate 8 and the electromagnet 7 attract each other, and the magnetic attraction of the electromagnet 7 to the metal plate 8 is restored to a value higher than the preset value;

[0040] When the amount of material entering the shell 1 is not enough, the height of the material piled on the upper end of the rotating plate 4 does not reach the preset value, or the weight of the material is less than the preset value of the magnetic attraction and is insufficient to open the rotating plate 4, the rotating plate 4 will not touch the alarm switch 9 at this time. The alarm switch 9 will sound if it is not touched for a period of time, thereby prompting the staff to continue adding materials.

[0041] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A polyurethane injection molding machine with a weighing function, comprising a housing (1) provided with a feeding end (2) and a discharging end (3), characterized in that: The injection molding machine also includes: A rotating plate (4) is provided with a rotating shaft (5) at one end, the rotating shaft (5) is rotatably matched with a rotating groove provided in the housing (1), a material discharge channel for delivering materials to a feeder barrel is formed between the housing (1) and the discharge end (3), and the rotating plate (4) is used to open or close the material discharge channel; An alarm switch (9) disposed on the inner wall of the housing (1) and located on the rotation track of the rotating plate (4); A magnetic attraction component is arranged in the housing (1), and is used to generate a magnetic attraction force on the other end of the rotating plate (4) so ​​that the material discharge channel remains closed. When the weight of the material on the upper end of the rotating plate (4) exceeds the magnetic attraction force, the rotating plate (4) rotates to touch the alarm switch (9) to temporarily close and open the material discharge channel; A reset component is used to drive the rotating plate (4) to reset after the material on the surface of the rotating plate (4) is released.

2. The polyurethane injection molding machine with weighing function according to claim 1, characterized in that: The magnetic attraction component comprises: An electromagnet (7) disposed on the inner wall of the housing (1); A metal plate (8) is arranged on the surface of the rotating plate (4), and the electromagnet (7) is used to adsorb the metal plate (8).

3. The polyurethane injection molding machine with weighing function according to claim 1, characterized in that: The injection molding machine also includes a measuring component for detecting the height of the material on the upper end of the rotating plate (4), so as to ensure that the rotating plate (4) is rotated to open the material discharge channel only after the material height and weight meet the standards.

4. The polyurethane injection molding machine with weighing function according to claim 3, characterized in that: The measuring component is an infrared sensor (19) arranged inside the housing (1).

5. The polyurethane injection molding machine with weighing function according to claim 1, characterized in that: The reset component is a first motor (6) arranged outside the housing (1), and the output shaft of the first motor (6) is connected to the rotating shaft (5).

6. The polyurethane injection molding machine with weighing function according to any one of claims 3 or 4, characterized in that: The injection molding machine also includes: A scraper (17) for flattening the material on the upper end of the rotating plate (4); A movable frame (12) and an electric telescopic rod (16) arranged at the bottom of the movable frame (12), wherein the output end of the electric telescopic rod (16) is connected to a scraper (17); A second motor (10) disposed at one end of the housing (1); A screw rod (11) has one end connected to the output shaft of the second motor (10), the other end of the screw rod (11) passes through the side wall of the housing (1) and extends into the housing (1), and the screw rod (11) cooperates with a screw rod groove (13) provided in the movable frame (12).

7. The polyurethane injection molding machine with weighing function according to claim 6, characterized in that: The inner wall of the housing (1) is provided with a guide rod (14), and the guide rod (14) is slidably matched with a guide groove (15) provided on the movable frame (12).

8. The polyurethane injection molding machine with weighing function according to claim 4, characterized in that: The inner wall of the housing (1) is provided with a horizontally inclined guide plate (18), the lower end of the guide plate (18) is in contact with the rotating plate (4), and the infrared sensor (19) is arranged on the surface of the guide plate (18).

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