Plastic bottle discharging mechanism for injection molding machine

Abstract

The utility model discloses a plastic bottle blanking mechanism for an injection molding machine, which belongs to the field of plastic bottle injection molding equipment and comprises a base and an injection molding machine body arranged on the base, an injection molding cavity is arranged on the injection molding machine body, a movable mold and a fixed mold which are matched with each other for injection molding of plastic bottles are arranged in the injection molding cavity, and the plastic bottle blanking mechanism further comprises a conveying device. A through hole is formed in the base and penetrates through the two sides of the base, and the conveying front end of the conveying device is located in the through hole. A discharging hopper is arranged at the bottom of the injection molding cavity, and a discharging opening is formed in the bottom of the discharging hopper, communicates with the through hole and is located over the conveying device. The discharging hopper is defined by two oppositely-arranged vertical edges and two oppositely-arranged bevel edges, the two bevel edges are arranged in the length direction of the plastic bottle subjected to injection molding, and the width of the discharging opening is smaller than the length of the plastic bottle subjected to injection molding. According to the conveying device, the plastic bottles (bottle blanks) can vertically fall on the conveying belt of the conveying device, and the risk that the plastic bottles (bottle blanks) roll and fall on the conveying belt is reduced.

Description

Technical Field

[0001] The utility model relates to the field of plastic bottle injection molding equipment, and more specifically, it relates to a plastic bottle feeding mechanism for an injection molding machine. Background Art

[0002] Injection molding machine is also called injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity.

[0003] In the process of plastic bottle processing, the preform is generally first injected by the injection molding machine, and then the finished product is processed. The existing screw injection molding machine generally injects the preform horizontally, that is, the injected preform is horizontally arranged between the movable mold and the fixed mold. After demolding, the preform will fall into the collection frame or the conveyor belt of the conveyor device. Since the preform is cylindrical, it is easy to roll when placed horizontally on the conveyor belt, resulting in displacement or falling. In view of this, the utility model provides a new type of plastic bottle unloading mechanism for injection molding machine, which can make the plastic bottle (preform) fall vertically on the conveyor belt of the conveyor device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a plastic bottle unloading mechanism for an injection molding machine, which can enable plastic bottles (bottle preforms) to fall vertically onto the conveyor belt of a conveying device, thereby reducing the risk of plastic bottles (bottle preforms) rolling and falling on the conveyor belt.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A plastic bottle unloading mechanism for an injection molding machine comprises a base and an injection molding machine body arranged on the base, the injection molding machine body is provided with an injection molding cavity, a movable mold and a fixed mold for cooperating in injection molding plastic bottles are arranged in the injection molding cavity, and a conveying device is also included, the base is provided with a through hole, the through hole passes through both sides of the base, and the conveying front end of the conveying device is located in the through hole;

[0007] A lower hopper is provided at the bottom of the injection cavity, a lower material port is provided at the bottom of the lower hopper, the lower material port is communicated with the through hole and is located directly above the conveying device;

[0008] The discharge hopper is formed by two oppositely arranged vertical sides and two oppositely arranged oblique sides, the two oblique sides are arranged along the length direction of the injection-molded plastic bottle, and the width of the discharge port is smaller than the length of the injection-molded plastic bottle.

[0009] It is further preferred that: the lower hopper and the lower opening have a smooth transition.

[0010] It is further preferred that: a material discharging auxiliary mechanism for lifting the plastic bottles upwards is provided at the oblique side of the discharging hopper;

[0011] Further preferably, the material unloading auxiliary mechanism comprises a cylinder and a top plate, a blind hole is provided on the bevel, the cylinder is located in the blind hole, and the cylinder is used to drive the top plate to move up and down.

[0012] It is further preferred that: the top surface of the top plate is an inclined surface, and the inclination direction and angle are consistent with the inclination direction and angle of the hypotenuse.

[0013] It is further preferred that: the top plate is located at the bottom of the hypotenuse.

[0014] It is further preferred that: the distance between the feed opening and the conveying device is greater than the height of the plastic bottle and less than twice the height of the plastic bottle.

[0015] In summary, the utility model has the following beneficial effects: after injection molding and demoulding, the plastic bottle will first fall into the discharge hopper, and after the discharge hopper changes its falling state, it will eventually pass through the discharge port in a vertical shape and fall onto the belt of the conveyor device. The plastic bottles that fall onto the belt are in a vertical shape, which improves the transportation stability of the plastic bottles on the belt. The risk of plastic bottles rolling and falling on the conveyor belt is reduced. The setting of the discharge auxiliary mechanism can reduce the risk of blockage in the discharge hopper. The discharge auxiliary mechanism can be set to intermittent operation, or it can be manually opened according to the blockage situation. When the cylinder is started, the top plate will move vertically upward, thereby supporting the plastic bottle blocked in the discharge port, so that the plastic bottle can pass through the discharge port smoothly. It is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram in the embodiment, which is mainly used to illustrate the overall structure of the injection molding machine;

[0017] Figure 2 It is a partial cross-sectional schematic diagram in the embodiment, which is mainly used to illustrate the structure of the plastic bottle feeding mechanism;

[0018] Figure 3 yes Figure 2 The enlarged view of the structure A in the middle is mainly used to show the structure of the auxiliary pouring mechanism;

[0019] Figure 4 It is a partial cross-sectional schematic diagram in the embodiment, which is mainly used to illustrate the setting structure of the top plate.

[0020] In the figure, 1. base; 2. injection molding machine body; 3. injection cavity; 4. movable mold; 5. fixed mold; 6. through hole; 7. conveying device; 8. unloading auxiliary mechanism; 81. cylinder; 82. top plate; 9. unloading hopper; 10. unloading port; 11. blind hole. DETAILED DESCRIPTION

[0021] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment: A plastic bottle feeding mechanism for an injection molding machine, such as Figure 1-4 As shown, it comprises a base 1, an injection molding machine body 2 disposed on the base 1, and a conveying device 7 for conveying the plastic bottles. The injection molding machine body 2 is provided with an injection cavity 3, and a movable mold 4 and a fixed mold 5 for cooperating in injection molding the plastic bottles are disposed in the injection cavity 3, and the movable mold 4 and the fixed mold 5 are respectively located on opposite sides of the injection cavity 3. The base 1 is provided with a through hole 6, and the through hole 6 runs through both sides of the width direction of the base 1, and the conveying front end of the conveying device 7 is located in the through hole 6. The conveying device 7 is a belt conveyor.

[0023] A hopper 9 is provided at the bottom of the injection cavity 3, and a discharge port 10 is provided at the bottom of the hopper 9. The discharge port 10 is communicated with the through hole 6 and is located just above the conveying front end of the conveying device 7. The hopper 9 is enclosed by two oppositely arranged vertical sides and two oppositely arranged oblique sides. The two oblique sides are arranged along the length direction of the plastic bottle after injection molding, that is, the two oblique sides are arranged along the moving direction of the movable mold 4. The width of the discharge port 10 is less than the length of the plastic bottle after injection molding, so that the plastic bottle after injection molding passes through the discharge port 10 in a vertical shape, and the width direction of the discharge port 10 is consistent with the horizontal moving direction of the movable mold 4.

[0024] In order to enable the plastic bottles to be discharged smoothly, preferably, the discharge hopper 9 and the discharge port 10 have a smooth transition.

[0025] Since the width of the discharge port 10 is smaller than the length of the plastic bottle after injection molding, it is possible that the two ends of the plastic bottle are supported on the two oblique sides of the discharge hopper 9. In order to avoid this phenomenon and reduce blockage, preferably, a discharge auxiliary mechanism 8 for lifting the plastic bottle upward is provided on both oblique sides of the discharge hopper 9.

[0026] Specifically, the material unloading auxiliary mechanism 8 includes a cylinder 81 and a top plate 82. A blind hole 11 is provided on the hypotenuse. The cylinder 81 is located in the blind hole 11. The piston rod of the cylinder 81 is fixed to the bottom of the top plate 82. The cylinder 81 is used to drive the top plate 82 to move up and down, thereby pushing the plastic bottles upward, so that the plastic bottles supported on the two hypotenuses of the unloading hopper 9 can smoothly pass through the unloading port 10 in a vertical shape and fall onto the belt of the conveyor 7. The top surface of the top plate 82 is an inclined surface, and the inclination direction and angle are consistent with the inclination direction and angle of the hypotenuse. When the top plate 82 is not lifted up, the top surface of the top plate 82 and the hypotenuse of the unloading port 10 are in a straight line. In order to play a better role in unloading auxiliary, preferably, the top plate 82 is located at the bottom of the hypotenuse.

[0027] In order to prevent the plastic bottles from changing direction and position while falling onto the belt, the distance between the discharge port 10 and the conveyor 7 should not be too large. Preferably, the distance between the discharge port 10 and the conveyor 7 is greater than the height of the plastic bottles and less than twice the height of the plastic bottles.

[0028] Working process and principle: After injection molding and demoulding, the plastic bottle will first fall into the hopper 9. After the hopper 9 changes its falling state, it will eventually pass through the discharge port 10 in a vertical state and fall onto the belt of the conveyor 7. The setting of the discharge auxiliary mechanism 8 can reduce the risk of blockage in the hopper 9. The discharge auxiliary mechanism 8 can be set to work intermittently or manually opened according to the blockage situation. When the cylinder 81 is started, the top plate 82 will move vertically upward, thereby supporting the plastic bottle blocked in the discharge port 10, so that the plastic bottle can pass through the discharge port 10 smoothly. It is simple and convenient to use.

[0029] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A plastic bottle unloading mechanism for an injection molding machine, comprising a base (1) and an injection molding machine body (2) arranged on the base (1), an injection molding cavity (3) being arranged on the injection molding machine body (2), a movable mold (4) and a fixed mold (5) for cooperating in injection molding of plastic bottles being arranged in the injection molding cavity (3), characterized in that: It also comprises a conveying device (7), the base (1) is provided with a through hole (6), the through hole (6) runs through both sides of the base (1), and the conveying front end of the conveying device (7) is located in the through hole (6); A material discharge hopper (9) is provided at the bottom of the injection cavity (3), a material discharge port (10) is provided at the bottom of the material discharge hopper (9), and the material discharge port (10) is communicated with the through hole (6) and is located directly above the conveying device (7); The discharge hopper (9) is formed by two oppositely arranged vertical sides and two oppositely arranged oblique sides, the two oblique sides are arranged along the length direction of the injection-molded plastic bottle, and the width of the discharge port (10) is smaller than the length of the injection-molded plastic bottle.

2. A plastic bottle feeding mechanism for an injection molding machine according to claim 1, characterized in that: The lower hopper (9) and the lower opening (10) are in smooth transition.

3. The plastic bottle feeding mechanism for an injection molding machine according to claim 1, characterized in that: A material discharging auxiliary mechanism (8) for lifting the plastic bottles upwards is arranged at the oblique side of the material discharging hopper (9).

4. A plastic bottle feeding mechanism for an injection molding machine according to claim 3, characterized in that: The material unloading auxiliary mechanism (8) comprises a cylinder (81) and a top plate (82); a blind hole (11) is provided on the hypotenuse; the cylinder (81) is located in the blind hole (11); and the cylinder (81) is used to drive the top plate (82) to move up and down.

5. The plastic bottle unloading mechanism for an injection molding machine according to claim 4, characterized in that: The top surface of the top plate (82) is an inclined surface, and the inclination direction and angle are consistent with the inclination direction and angle of the hypotenuse.

6. The plastic bottle unloading mechanism for an injection molding machine according to claim 4, characterized in that: The top plate (82) is located at the bottom of the bevel.

7. The plastic bottle unloading mechanism for an injection molding machine according to claim 1, characterized in that: The distance between the discharge port (10) and the conveying device (7) is greater than the height of the plastic bottle and less than twice the height of the plastic bottle.

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