A cooling device for plastic bottles after blow molding

Abstract

This utility model discloses a cooling device for plastic bottles after blow molding, belonging to the field of plastic bottle production technology. It includes a lifting cylinder, with a support plate at the output end of the lifting cylinder. A cooling pipe is located above the support plate, and a tapered tube is located at the lower end of the cooling pipe. A sealing ball is located inside the tapered tube, and a traction rope is attached to the sealing ball. One end of the traction rope is fixed to the sealing ball, and the other end extends to the outside of the cooling pipe. A slip ring is located at the end of the traction rope outside the cooling pipe, and the slip ring is slidably disposed on the outer wall of the cooling pipe. The slip ring has several vent holes. A refrigeration device is located outside the other end of the cooling pipe, and a connecting pipe is located on the output end of the refrigeration device, connecting to the other end of the cooling pipe. This technical solution is used to reduce the cooling time after plastic bottle blow molding and improve the cooling effect.

Description

Technical Field

[0001] This utility model belongs to the field of plastic bottle production technology, specifically relating to a cooling device for plastic bottles after blow molding. Background Technology

[0002] A blow molding machine is a machine that blows bottles. In its simplest sense, it is a machine that can blow plastic granules (softened into liquid) or pre-made bottle preforms into bottles through certain processes. Blow molding machines are convenient, fast, and have a large production capacity. After their emergence, they replaced most manual blow molding and were adopted by most beverage companies.

[0003] Existing fully automatic blow molding machines typically use cold air for cooling during operation. For example, a cooling system is installed on the outside of the plastic bottle to cool the bottle after blow molding and harden it. However, this method of cooling the outer wall of the plastic bottle by air means that the blown cold air only comes into contact with the outer wall of the plastic bottle for a short time. Moreover, it is difficult to ensure that the blown cold air fully covers the outer wall of the plastic bottle. This results in long cooling time and uneven cooling of the surface of the plastic bottle, leading to poor cooling effect. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a cooling device for plastic bottles after blow molding, so as to reduce the cooling time and improve the cooling effect after the plastic bottles are blow molded.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cooling device for blow-molded plastic bottles includes a lifting cylinder, a support plate at the output end of the lifting cylinder, a cooling pipe above the support plate, a tapered tube at the lower end of the cooling pipe, a sealing ball inside the tapered tube, a traction rope on the sealing ball, one end of the traction rope being fixed to the sealing ball, and the other end of the traction rope extending to the outside of the cooling pipe, a slip ring on the end of the traction rope outside the cooling pipe, the slip ring being slidably disposed on the outer wall of the cooling pipe, the slip ring having several vent holes, a refrigeration device on the outer side of the other end of the cooling pipe, a connecting pipe on the output end of the refrigeration device, and the connecting pipe being connected to the other end of the cooling pipe.

[0007] Furthermore, the slip ring is provided with a mounting hole, the traction rope passes through the mounting hole, and a stop block is provided at the end of the traction rope, the stop block being detachably connected to the traction rope.

[0008] Furthermore, a counterweight is provided on the portion of the traction rope located inside the cooling pipe, and the counterweight is fixed to the traction rope.

[0009] Furthermore, a fixing ring is provided above the slip ring, the fixing ring is fixed to the outer wall of the cooling pipe, and a spring is provided on the fixing ring. The spring is sleeved on the cooling pipe, and the two ends of the spring are respectively fixed to the slip ring and the fixing ring.

[0010] Furthermore, it also includes an operating table, on which a conveyor belt is provided, which transports the blow-molded plastic bottle and the blow molding die to a pallet directly below the cooling pipe.

[0011] Furthermore, the counterweight is spherical.

[0012] The beneficial effects of this utility model are as follows:

[0013] (1) In this technical solution, by setting up the traction rope, the sealing ball and the slip ring, the end of the cooling pipe can be controlled to open when the cooling pipe enters the plastic bottle to a specified depth, thereby realizing automatic air intake cooling. At the same time, after cooling is completed, the sealing ball can automatically reset and seal the end of the cooling pipe, thereby avoiding the problem of the cooling pipe continuously discharging cold air, which leads to the waste of cold source.

[0014] (2) This technical solution delivers cold air into the plastic bottle for cooling, so that the cold air comes into full and long-term contact with the inside of the plastic bottle. This method has a fast cooling speed and can achieve uniform cooling with good cooling effect.

[0015] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0017] Figure 1 This is a schematic cross-sectional view of the cooling device of this utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the cooling pipe located inside the plastic bottle in the cooling device of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the cooling pipe of this utility model located inside a plastic bottle;

[0020] Figure 4 This is a schematic cross-sectional view of the present invention, showing that the cooling pipe is located inside the plastic bottle and the plastic bottle is located inside the blow molding mold.

[0021] The following labels are shown in the attached diagram:

[0022] 1. Pallet; 2. Lifting cylinder; 3. Blow molding mold; 4. Plastic bottle; 5. Refrigeration equipment; 6. Connecting pipe; 7. Cooling pipe; 8. Tapered pipe; 9. Sealing ball; 10. Traction rope; 11. Slip ring; 12. Vent hole; 13. Stop block; 14. Counterweight block; 15. Spring; 16. Fixing ring. Detailed Implementation

[0023] like Figures 1-4 As shown, a cooling device for blow-molded plastic bottles includes a lifting cylinder 2. A support plate 1 is provided on the output end of the lifting cylinder 2. A cooling pipe 7 is provided above the support plate 1. A tapered pipe 8 is provided at the lower end of the cooling pipe 7. A sealing ball 9 is provided inside the tapered pipe 8. A traction rope 10 is provided on the sealing ball 9. One end of the traction rope 10 is fixed to the sealing ball 9. The other end of the traction rope 10 extends to the outside of the cooling pipe 7. A slip ring 11 is provided on the end of the traction rope 10 located outside the cooling pipe 7. The slip ring 11 is slidably disposed on the outer wall of the cooling pipe 7. Several exhaust holes 12 are provided on the slip ring 11. A refrigeration device 5 (existing technology, refer to the structure of air conditioners, etc.) is provided on the outer side of the other end of the cooling pipe 7. A connecting pipe 6 is provided on the output end of the refrigeration device 5. The connecting pipe 6 is connected to the other end of the cooling pipe 7.

[0024] The working principle of the above technical solution is as follows:

[0025] The injection-molded plastic bottle 4 and blow molding mold 3 are placed on the pallet 1. The lifting cylinder 2 pushes them upwards, positioning the cooling pipe 7 inside the bottle opening of the plastic bottle 4. Simultaneously, the slip ring 11 contacts the blow molding mold 3, which pushes the slip ring 11 upwards. This causes the slip ring 11 to move the sealing ball 9 upwards via the traction rope 10, allowing cold air to be injected into the plastic bottle 4 through the cooling pipe 7 for cooling. After cooling, the plastic bottle 4 moves downwards, and the sealing ball 9 falls under gravity, sealing the cooling pipe 7. Cold air enters the plastic bottle 4 through the cooling pipe 7, moves upwards from the bottom, and is then expelled. This method allows the cold air to fill the interior of the plastic bottle 4, achieving rapid and uniform cooling.

[0026] Therefore, in this technical solution, by setting up the traction rope 10, the sealing ball 9 and the slip ring 11, when the cooling pipe 7 enters the plastic bottle 4 to a specified depth, the end of the cooling pipe 7 can be controlled to open, thereby realizing automatic air intake cooling. At the same time, after cooling is completed, the sealing ball 9 can automatically reset and seal the end of the cooling pipe 7, thereby avoiding the problem of the cooling pipe 7 continuously discharging cold air, which would lead to a waste of cold source.

[0027] In one feasible embodiment, the slip ring 11 is provided with a mounting hole, the traction rope 10 passes through the mounting hole, and the end of the traction rope 10 is provided with a stop 13. The stop 13 is detachably connected to the traction rope 10. The length of the traction rope 10 can be adjusted by adjusting the position of the stop 13, thereby adapting to different depths of the plastic bottle 4. Preferably, the end of the cooling pipe 7 is located at the lower part of the plastic bottle 4.

[0028] In one feasible embodiment, a counterweight 14 is provided on the portion of the traction rope 10 located inside the cooling pipe 7. The counterweight 14 is fixed to the traction rope 10. When the depth is greater than the length of the traction rope 10, i.e., the distance from the point where the traction rope 10 exits the cooling pipe 7 to the sealing ball 9, the counterweight 14 can pull the traction rope 10 into the cooling pipe 7, thus preventing the traction rope 10 from accumulating at the slip ring 11 and causing interference with the sliding of the slip ring 11.

[0029] In one feasible embodiment, a fixing ring 16 is provided above the slip ring 11. The fixing ring 16 is fixed to the outer wall of the cooling pipe 7. A spring 15 is provided on the fixing ring 16. The spring 15 is sleeved on the cooling pipe 7, and the two ends of the spring 15 are respectively fixed to the slip ring 11 and the fixing ring 16. The spring 15 can limit the position of the slip ring 11 and promote the reset of the slip ring 11.

[0030] In one feasible embodiment, an operating table is also included, on which a conveyor belt is provided to transport the blow-molded plastic bottle 4 and the blow molding mold 3 to a pallet 1 directly below the cooling pipe 7, and the counterweight 14 is spherical with a diameter smaller than that of the cooling pipe 7.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A cooling apparatus for plastic bottles after blow molding, characterized by: The device includes a lifting cylinder (2), a support plate (1) on the output end of the lifting cylinder (2), a cooling pipe (7) above the support plate (1), a tapered pipe (8) at the lower end of the cooling pipe (7), a sealing ball (9) inside the tapered pipe (8), a traction rope (10) on the sealing ball (9), one end of the traction rope (10) fixed to the sealing ball (9), the other end of the traction rope (10) extending to the outside of the cooling pipe (7), a slip ring (11) on the end of the traction rope (10) outside the cooling pipe (7), the slip ring (11) slidingly disposed on the outer wall of the cooling pipe (7), a plurality of exhaust holes (12) on the slip ring (11), a refrigeration device (5) on the other side of the cooling pipe (7), a connecting pipe (6) on the output end of the refrigeration device (5), and the connecting pipe (6) connected to the other end of the cooling pipe (7).

2. The apparatus for cooling a plastic bottle after blow molding according to claim 1, wherein: The slip ring (11) is provided with an installation hole, the traction rope (10) passes through the installation hole, and the end of the traction rope (10) is provided with a stop block (13), which is detachably connected to the traction rope (10).

3. A plastic bottle cooling apparatus after blow molding according to claim 2, characterized in that: The portion of the traction rope (10) located inside the cooling pipe (7) is provided with a counterweight (14), which is fixed to the traction rope (10).

4. The apparatus for cooling a plastic bottle after blow molding according to claim 1, wherein: A fixing ring (16) is provided above the slip ring (11). The fixing ring (16) is fixed on the outer wall of the cooling pipe (7). A spring (15) is provided on the fixing ring (16). The spring (15) is sleeved on the cooling pipe (7), and the two ends of the spring (15) are respectively fixed on the slip ring (11) and the fixing ring (16).

5. The apparatus for cooling a plastic bottle after blow molding according to claim 1, wherein: It also includes an operating table, on which a conveyor belt is provided, which transports the blow-molded plastic bottle (4) and the blow molding die (3) to the tray (1) directly below the cooling pipe (7).

6. The apparatus for cooling a plastic bottle after blow molding according to claim 3, wherein: The counterweight (14) is spherical.

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