Anti-glue overflow device for injection molding

Abstract

The utility model discloses a glue device is prevented spilling with injection molding relates to injection molding field, the technical scheme of utility model discloses including outer tube and screw rod, the lower end of outer tube is used for with exhaust hole butt joint, the screw rod is rotated and is cooperated in outer tube, the screw rod is driven through motor, the upper end of screw rod is cooperated with outer tube through two bearings, the upper end of screw rod outwardly is provided with limit platform, and the limit platform is more big than the circle diameter of screw rod, limit platform is located between two bearings. The design of limit platform and bearing can avoid the screw rod to fall down, and a plurality of pinholes are used as exhaust hole, which can ensure that water vapor can be discharged smoothly while reducing the probability of raw material outward discharge.

Description

Technical Field

[0001] This utility model relates to the field of injection molding, and in particular to an anti-overflow device for injection molding. Background Technology

[0002] The main structure of an injection molding machine includes a barrel and a screw. Traditionally, the raw material needs to be dried before injection molding. Currently, vents are usually set in the barrel to remove moisture from the raw material, eliminating the need for drying. However, in actual use, the raw material can easily flow out of the vent along with the moisture, affecting production. To prevent the raw material from overflowing, an anti-overflow device is needed. Currently, the main method is to use a rotating screw to squeeze the raw material back into the barrel. When the raw material overflows, it exerts an outward pushing force on the screw, preventing it from moving to the vent. However, if the amount of raw material overflowing decreases, the screw risks falling downwards. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an anti-overflow device for injection molding. The design of the limiting platform and bearing can prevent the screw rod from falling downwards, and the use of several small holes as venting holes can ensure that water and air can be discharged smoothly while reducing the probability of raw materials being discharged.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an anti-overflow device for injection molding, including an outer cylinder and a spiral rod;

[0005] The lower end of the outer cylinder is used to connect with the exhaust port. The spiral rod is rotatably fitted inside the outer cylinder. The spiral rod is driven by a motor. The upper end of the spiral rod is fitted with the outer cylinder through two bearings. A limiting platform is provided outward at the upper end of the spiral rod. The limiting platform is larger than the diameter of the spiral rod. The limiting platform is located between the two bearings.

[0006] This design uses two bearings to hold the limiting stage in the middle, which ensures the smooth rotation of the screw rod and prevents it from falling downwards, thus maintaining operational stability.

[0007] Preferably, the lower section of the screw rod is a helical section, and the side wall of the outer cylinder is provided with an exhaust hole corresponding to the upper part of the helical section. This facilitates the discharge of moisture from inside the raw material and reduces the possibility of the raw material escaping through the exhaust hole.

[0008] Preferably, the vent hole includes at least one small hole with a diameter of 0.5-5 mm. This prevents the raw material from being discharged with the water vapor.

[0009] Preferably, the outer cylinder is fitted with an exhaust ring, and the exhaust ring has a through hole corresponding to the exhaust hole.

[0010] Preferably, the outer cylinder includes a lower auxiliary cylinder and an upper cooling block. The spiral section is located in the auxiliary cylinder. The cooling block has a through hole for fixing a bearing, and cooling channels are provided on the side wall of the cooling block. The cooling channels are connected to an external circulating water source. The upper end of the cooling block is used to install structures such as motors. The external circulating water source flows through the cooling channels, which can remove the heat from the cooling block and achieve a cooling effect.

[0011] Preferably, the outer cylinder is equipped with a sensor to detect when the screw rod stops rotating. This allows for continuous monitoring of the screw rod's operation, and timely detection of any stoppage due to blockage or other reasons.

[0012] Preferably, the motor is linked to the upper end of the screw rod via a reducer. This reduces the rotational speed of the screw rod.

[0013] The beneficial effects of this utility model are:

[0014] The design of using a limiting platform and bearings can prevent the screw rod from falling downwards, and the use of several small holes as venting holes can ensure that water and air can be discharged smoothly while reducing the probability of raw materials being discharged. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only two of the drawings in this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the outer cylinder and exhaust ring according to an embodiment of the present utility model;

[0018] The components include: 1. Auxiliary cylinder; 2. Cooling block; 3. Motor; 4. Helical rod; 5. Helical segment; 6. Limiting platform; 7. Bearing; 8. Reducer; 9. Sensor; 10. Exhaust port; 11. Alarm; 12. Controller; 13. Exhaust ring; 14. Through hole. Detailed Implementation

[0019] To enhance understanding of this utility model, it will be described in further detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain this utility model and do not limit the scope of protection of this utility model.

[0020] Example

[0021] like Figure 1As shown, the anti-overflow device for injection molding includes an outer cylinder and a spiral rod 4. The lower end of the outer cylinder is used to connect with the vent hole 10. The spiral rod 4 is rotatably fitted inside the outer cylinder. The spiral rod 4 is driven by a motor 3. The upper end of the spiral rod 4 is fitted with the outer cylinder through two bearings 7. A limiting platform 6 is provided outward at the upper end of the spiral rod 4. The limiting platform 6 has a larger diameter than the spiral rod 4. The limiting platform 6 is located between the two bearings 7.

[0022] This design uses two bearings 7 to hold the limiting platform 6 in the middle, which on the one hand ensures that the screw rod 4 rotates smoothly, and on the other hand prevents the screw rod 4 from falling downwards, thus maintaining the stability of the operation.

[0023] The lower section of the screw rod 4 is a helical section 5, and an exhaust port 10 is provided on the side wall of the outer cylinder corresponding to the upper part of the helical section 5. This facilitates the discharge of moisture from the raw material and reduces the possibility of the raw material being discharged through the exhaust port 10.

[0024] The vent 10 includes at least one small hole with a diameter of 0.5-5 mm. This prevents the raw material from being discharged with the water vapor.

[0025] Combination Figure 2 As shown, the outer cylinder is fitted with an exhaust ring 13, and the exhaust ring 13 is provided with a through hole 14 corresponding to the exhaust hole 10.

[0026] The outer cylinder includes a lower auxiliary cylinder 1 and an upper cooling block 2. The spiral section 5 is located in the auxiliary cylinder 1. The cooling block 2 has a through hole for fixing the bearing 7, and cooling channels are provided on the side wall of the cooling block 2, which are connected to an external circulating water source. The upper end of the cooling block 2 is used to install structures such as a motor 3. The external circulating water source flows through the cooling channels, which can remove the heat from the cooling block 2, thus achieving a cooling effect. The circulating water source includes a circulating pump, a water tank, and heat dissipation fins. The circulating pump, water tank, and cooling channels form a circulating water channel, and the heat dissipation fins dissipate heat from the water tank.

[0027] The outer cylinder is equipped with a sensor 9 to detect when the screw rod 4 stops rotating. This allows for continuous monitoring of the screw rod 4's operation, and timely detection of any stoppage due to blockage or other reasons. The sensor 9 is electrically connected to an alarm 11, which is controlled by a controller 12. The alarm 11 uses either a warning light or a buzzer.

[0028] The motor 3 is linked to the upper end of the screw rod 4 via a reducer 8, which can reduce the rotational speed of the screw rod 4.

[0029] The beneficial effects of this utility model are:

[0030] The design of the limiting platform 6 and bearing 7 can prevent the screw rod 4 from falling downwards. The exhaust port 10 is made of several small holes, which can ensure that water and air can be discharged smoothly while reducing the probability of raw materials being discharged.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An anti-overflow device for injection molding, characterized in that, Including the outer cylinder and the screw rod (4); The lower end of the outer cylinder is used to connect with the exhaust port (10). The spiral rod (4) is rotatably fitted inside the outer cylinder. The spiral rod (4) is driven by the motor (3). The upper end of the spiral rod (4) is fitted with the outer cylinder through two bearings (7). A limiting platform (6) is provided outward at the upper end of the spiral rod (4). The limiting platform (6) is larger than the diameter of the spiral rod (4). The limiting platform (6) is located between the two bearings (7).

2. The anti-overflow device for injection molding according to claim 1, characterized in that: The lower section of the screw rod (4) is a helical section (5), and the side wall of the outer cylinder is provided with an exhaust hole (10) corresponding to the upper part of the helical section (5).

3. The anti-overflow device for injection molding according to claim 2, characterized in that: The vent (10) includes at least one small hole with a diameter of 0.5-5 mm.

4. The anti-overflow device for injection molding according to claim 3, characterized in that: The outer cylinder is fitted with an exhaust ring (13), and the exhaust ring (13) is provided with a through hole (14) corresponding to the exhaust hole (10).

5. The anti-overflow device for injection molding according to claim 2, characterized in that: The outer cylinder includes a lower auxiliary cylinder (1) and an upper cooling block (2). The spiral section (5) is located in the auxiliary cylinder (1). The cooling block (2) is provided with a through hole for fixing the bearing. The side wall of the cooling block (2) is provided with a cooling channel, which is connected to an external circulating water source.

6. The anti-overflow device for injection molding according to claim 1, characterized in that: The outer cylinder is equipped with a sensor (9) to detect when the screw rod (4) stops rotating.

7. The anti-overflow device for injection molding according to claim 1, characterized in that: The motor (3) is linked to the upper end of the screw rod (4) via a reducer (8).

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