Bottle preform blow molding cooling device

Abstract

The utility model discloses a bottle preform blow molding cooling device which comprises a mounting seat, a lifting sliding seat is mounted on the mounting seat in a lifting sliding manner, a cooling moving seat is fixedly mounted on the lifting sliding seat, and the lifting sliding seat is driven to lift by a lifting power device. A plurality of cooling rods which downwards stretch and blow air are fixedly mounted on the cooling moving seat, a cooling air path channel communicated with the cooling rods is arranged in the cooling moving seat, a blow molding head which is inserted into a mold for blocking blow molding is further mounted on the mounting seat, and the blow molding head is driven by a telescopic power device to stretch and retract downwards. An air supply combination valve for supplying air to the blow molding heads is further fixedly mounted on the mounting seat, and the cooling rods are in one-to-one correspondence with the blow molding heads and are inserted into the blow molding heads; the device can be used for cooling the bottom of the blow-molded bottle preform, so that the molding effect is ensured, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to blow molding equipment technical field especially relates to a bottle embryo blow molding cooling device. BACKGROUND

[0002] When producing and processing plastic bottles, plastic bottle blow molding machines are needed to blow plastic bottles, after the bottle embryo enters the mold for blow molding after being heated by the oven, the surface of the blown bottle embryo will directly adhere to the surface of the mold cavity, and the mold is generally divided into two half-molds, after the plastic bottle is blow molded in the mold after the mold is closed, the cooling device on the two half-molds cools the plastic bottle, and finally the plastic bottle is discharged from the discharge port of the plastic bottle blow molding machine. The current cooling device mainly sets a circulating waterway on the two half-molds, and the bottle body of the blow molded plastic bottle will be quickly cooled after being attached to the mold cavity of the half-mold, thereby improving the efficiency of blow molding. However, when blow molding large plastic bottles such as oil bottles, the middle part of the bottom of such large plastic bottles has a relatively thick protrusion, the mold is generally divided into two halves to facilitate demolding, and the bottom after blow molding cannot be reliably contacted and cooled simultaneously, and the protrusion thickness of the bottle bottom is relatively thick, which requires longer cooling time, thereby limiting the efficiency of blow molding. Under the condition of ensuring sufficient efficiency, the cooling time is relatively short, and when the mold is opened, the temperature of the bottle bottom may still be relatively high and not fully set, and when the mold is opened, the plastic bottle may be deformed due to incomplete cooling. SUMMARY

[0003] The technical problem to be solved by the utility model is a bottle embryo blow molding cooling device, which can cool the bottle bottom of the blow molded bottle embryo, ensure the molding effect, and improve the production efficiency.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a bottle embryo blow molding cooling device, comprising a mounting seat, a lifting slide is installed on the mounting seat, a cooling moving seat is fixedly installed on the lifting slide, the lifting slide is driven to lift by a lifting power device, a plurality of cooling rods extending downward for blowing are fixedly installed on the cooling moving seat, a cooling gas passage is arranged in the cooling moving seat and communicated with the cooling rods, a blow molding head is also installed on the mounting seat to block blow molding, the blow molding head is driven to extend downward by an extension power device, a gas supply combination valve is also fixedly installed on the mounting seat to supply gas to the blow molding head, and the cooling rods correspond to the blow molding heads one by one and are inserted into the blow molding heads.

[0005] As a preferred embodiment, the mounting base includes a cooling mounting base and a blow molding mounting base, which are respectively fixedly mounted on corresponding platforms. A lifting slide is slidably mounted on the cooling mounting base. The cooling mounting base is equipped with a detection sensor to detect the position of the cooling sliding seat when it is raised or lowered. The blow molding head and the air supply combination valve are both fixedly mounted on the blow molding mounting base. The blow molding mounting base is provided with a blow molding air passage that communicates with the air supply combination valve and the blow molding head.

[0006] As a preferred embodiment, the telescopic power device includes a telescopic cylinder, which is fixedly mounted on the blow molding mounting base. The telescopic cylinder has a corresponding air inlet to drive the blow molding head to extend and retract, and the cooling rod passes through the telescopic cylinder and is located inside the blow molding head.

[0007] As a preferred embodiment, the blow molding head is detachably equipped with a sealing head adapted to different molds.

[0008] As a preferred embodiment, the blow molding head end is threaded, the sealing head is fixed with a lower round nut that is threadedly connected to the blow molding head end, and the blow molding head end is threadedly fitted with an upper round nut, the upper round nut pressing against the lower round nut.

[0009] As a preferred embodiment, the telescopic cylinder is provided with a blow molding pipe that communicates with the blow molding head. The blow molding pipe extends and retracts synchronously with the blow molding head, and the air output of the blow molding head increases as the blow molding pipe extends.

[0010] As a preferred embodiment, a vertical rack is vertically connected to the cooling movable seat, and a drive gear that meshes with the vertical rack is rotatably mounted on the cooling mounting seat. The drive gear is driven to rotate by a servo motor.

[0011] As a preferred embodiment, the cooling mounting base is also provided with a limiting block to restrict the swaying of the vertical rack during lifting and lowering.

[0012] As a preferred embodiment, the detection sensing device is a proximity switch, which is fixed to the upper and lower ends of the cooling mounting base via a proximity switch mounting base and corresponds to the lifting range of the cooling moving base.

[0013] After adopting the above technical solution, the effect of this utility model is as follows: The preform blow molding cooling device includes a mounting base, on which a lifting slide is slidably mounted. A cooling movable seat is fixedly mounted on the lifting slide. The lifting slide is driven to rise and fall by a lifting power device. Several downward-extending cooling rods are fixedly mounted on the cooling movable seat. A cooling air passage communicating with the cooling rods is provided inside the cooling movable seat. A blow molding head that is inserted into the mold to seal the blow molding process is also mounted on the mounting base. The blow molding head is driven to extend and retract downwards by a telescopic power device. An air supply combination valve for supplying air to the blow molding head is also fixedly mounted on the mounting base. The cooling rods correspond one-to-one with the blow molding heads and are inserted into the blow molding heads. First, the telescopic power device drives the blow molding head to extend into the mold. Then, the air supply combination valve opens, causing the blow molding head to blow mold the preform in the mold. Next, the lifting power device drives the lifting slide to descend, allowing the cooling rods to enter the preform and blow air towards the bottom of the preform. This device can cool the bottom of the blow-molded preform, ensuring molding effect and improving production efficiency.

[0014] Furthermore, since the mounting base includes a cooling mounting base and a blow molding mounting base, which are respectively fixedly mounted on their respective platforms, and a lifting slide is slidably mounted on the cooling mounting base, the cooling mounting base is equipped with a detection sensor to detect the position of the cooling moving base during lifting. The blow molding head and the air supply combination valve are both fixedly mounted on the blow molding mounting base, and the blow molding mounting base is provided with a blow molding air passage communicating with the air supply combination valve and the blow molding head. The cooling mounting base and the blow molding mounting base can respectively ensure the stable installation of the blow molding head and the cooling rod, and the blow molding head and the cooling rod can move independently without causing any interference. The detection sensor can ensure the accurate lifting of the cooling rod.

[0015] Furthermore, since the telescopic power device includes a telescopic cylinder, which is fixedly installed on the blow molding mounting base, and the telescopic cylinder is provided with a corresponding air inlet to drive the extension and retraction of the blow molding head, and the cooling rod passes through the telescopic cylinder and is located inside the blow molding head; the telescopic cylinder drives the blow molding head to extend and retract accurately and stably, while ensuring that the cooling rod moves accurately inside the blow molding head when it is raised and lowered, thus ensuring the cooling of the bottom of the preform.

[0016] Furthermore, the blow molding head is detachably equipped with a sealing head that adapts to different molds, thereby improving the blow molding effect and adapting to different molds.

[0017] Furthermore, since the blow molding head end is threaded, the sealing head is fixed with a lower round nut that is threadedly connected to the blow molding head end, and an upper round nut is threadedly installed on the blow molding head end, with the upper round nut pressing against the lower round nut; first, the upper round nut is screwed in, and then the sealing head is screwed into the blow molding head end through the lower round nut, and then the upper round nut and the lower round nut are tightened together, thereby locking each other and ensuring that the sealing head is easy to disassemble and fix.

[0018] Furthermore, since the telescopic cylinder is equipped with a blow molding pipe that communicates with the blow molding head, the blow molding pipe extends and retracts synchronously with the blow molding head, and the air output of the blow molding head increases as the blow molding pipe extends; this ensures the blow molding effect during blow molding, while effectively preventing air blowing when not blow molding, thus improving safety.

[0019] Furthermore, since a vertical rack is vertically connected to the cooling moving seat, and a drive gear that meshes with the vertical rack is rotatably mounted on the cooling mounting seat, the drive gear is driven to rotate by a servo motor; by driving the drive gear to rotate by the servo motor, the vertical rack can be moved linearly, thereby causing the cooling moving seat to slide according to the lifting slide, making the drive simple and convenient.

[0020] Furthermore, the cooling mounting base is also equipped with a limiting block to restrict the swaying of the vertical rack during lifting and lowering; this improves the stability of the drive gear when it meshes with the vertical rack.

[0021] Furthermore, since the detection sensing device is a proximity switch, which is fixed to the upper and lower ends of the cooling mounting base via a proximity switch mounting base and corresponds to the lifting range of the cooling moving base, the accuracy of the cooling rod movement is improved, ensuring stable and reliable cooling. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the cooling rod in an embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the blow molding head according to an embodiment of this utility model;

[0026] Figure 4 This is a cross-sectional view of the telescopic power device driving the blow molding head according to an embodiment of this utility model;

[0027] Figure 5 yes Figure 2 Sectional view at point A;

[0028] In the attached diagram: 1. Cooling mounting base; 2. Blow molding mounting base; 3. Lifting slide; 4. Cooling moving base; 5. Cooling rod; 6. Cooling air passage; 7. Blow molding head; 8. Air supply combination valve; 9. Blow molding air passage; 10. Telescopic cylinder; 11. Air inlet; 12. Cooling hole; 13. Sealing head; 14. Lower round nut; 15. Upper round nut; 16. Blow molding pipe; 17. Vertical rack; 18. Drive gear; 19. Servo motor; 20. Limit block; 21. Proximity switch mounting base. Detailed Implementation

[0029] The present invention will be further described in detail below through specific embodiments.

[0030] like Figure 1 and Figure 2 As shown, a preform blow molding cooling device includes a mounting base, on which a lifting slide 3 is slidably mounted. A cooling movable seat 4 is fixedly mounted on the lifting slide 3. The lifting slide 3 is driven to rise and fall by a lifting power device. Several cooling rods 5 extending downwards for blowing air are fixedly mounted on the cooling movable seat 4. A cooling air passage 6 communicating with the cooling rods 5 is provided inside the cooling movable seat 4. A blow molding head 7 is also mounted on the mounting base to be inserted into the mold to seal the blow molding process. The blow molding head 7 is driven to extend and retract downwards by a telescopic power device. An air supply combination valve 8 for supplying air to the blow molding head 7 is also fixedly mounted on the mounting base. The cooling rods 5 correspond one-to-one with the blow molding head 7 and are inserted into the blow molding head 7.

[0031] In this embodiment, the mounting base includes a cooling mounting base 1 and a blow molding mounting base 2. The cooling mounting base 1 and the blow molding mounting base 2 are respectively fixedly mounted on their respective platform surfaces. The lifting slide 3 is slidably mounted on the cooling mounting base 1. The cooling mounting base 1 is equipped with a detection sensor to detect the position of the cooling moving seat 4 when it is raised or lowered. The blow molding head 7 and the air supply combination valve 8 are both fixedly mounted on the blow molding mounting base 2. The blow molding mounting base 2 is equipped with a blow molding air passage 9 that communicates with the air supply combination valve 8 and the blow molding head 7. Since the blow molding head 7 and the cooling rod 5 move independently, the cooling mounting base 1 and the blow molding mounting base 2 can respectively ensure the stable installation of the blow molding head 7 and the cooling rod 5, ensuring that there will be no impact. The detection sensor can ensure the accurate raising and lowering of the cooling rod 5. The air supply combination valve 8 consists of multiple solenoid valves assembled on the blow molding mounting base 2, which facilitates precise control of the corresponding blow molding head 7 to blow air.

[0032] like Figure 3 and Figure 4 As shown, the telescopic power device includes a telescopic cylinder 10, which is fixedly installed on the blow molding mounting base 2. The telescopic cylinder 10 is provided with a corresponding air inlet 11 to drive the blow molding head 7 to extend and retract, and the cooling rod 5 passes through the telescopic cylinder 10 and is located inside the blow molding head 7. The telescopic cylinder 10 is provided with two air inlets 11 to control the rise and fall of the blow molding head 7 respectively. When the sealing head 13 extends and retracts, the cooling rod 5 is inside and will not be affected. When the cooling rod 5 is inserted into the telescopic cylinder 10 for raising and lowering, a sealing ring is used to seal it, ensuring the sealing effect during blowing. The cooling rod 5 moves accurately inside the blow molding head 7 during raising and lowering. At the same time, the cooling rod 5 has cooling holes 12 distributed near the bottom circumference and the bottom is sealed. The diameter of the cooling holes 12 is small, which ensures that while blowing, the airflow is not too large and easily deforms the preform, thus ensuring the cooling of the bottom of the preform.

[0033] like Figure 3 As shown, the blow molding head 7 is detachably equipped with a sealing head 13 adapted to different molds; this improves the blow molding effect and adapts to different molds.

[0034] Furthermore, the blow molding head 7 has a threaded end, and the sealing head 13 is fixed with a lower round nut 14 that is threadedly connected to the end of the blow molding head 7. The blow molding head 7 has an upper round nut 15 threadedly installed at the end, and the upper round nut 15 presses against the lower round nut 14. First, the upper round nut 15 is screwed in, and then the sealing head 13 is screwed into the end of the blow molding head 7 through the lower round nut 14. Then, the upper round nut 15 and the lower round nut 14 are pressed together, thereby locking each other and ensuring that the sealing head 13 can be easily disassembled and fixed.

[0035] In this embodiment, the telescopic cylinder 10 is provided with a blow molding pipe 16 that communicates with the blow molding head 7. The blow molding pipe 16 extends and retracts synchronously with the blow molding head 7. The air output of the blow molding head 7 increases as the blow molding pipe 16 extends. The raising and lowering of the blow molding pipe 16 can block the air outlet of the blow molding airflow channel, thereby changing the amount of air intake during blow molding, ensuring the blow molding effect during blow molding, and effectively avoiding air blowing when not blow molding, thus improving safety.

[0036] like Figure 2 As shown, a vertical rack 17 is vertically connected to the cooling movable seat 4, and a drive gear 18 that meshes with the vertical rack 17 is rotatably mounted on the cooling mounting seat 1. The drive gear 18 is driven to rotate by a servo motor 19. The servo motor 19 drives the drive gear 18 to rotate, which in turn drives the vertical rack 17 to move linearly, thereby making the cooling movable seat 4 slide along the lifting slide 3. The drive is simple and convenient.

[0037] In this embodiment, the cooling mounting base 1 is also provided with a limiting block 20 to restrict the shaking of the vertical rack 17 during lifting and lowering. This can improve the stability of the drive when the drive gear 18 meshes with the vertical rack 17, reduce the shaking of the vertical rack 17, and improve the stability of lifting and lowering.

[0038] Furthermore, the detection sensing device is a proximity switch, which is fixed to the upper and lower ends of the cooling mounting base 1 via a proximity switch mounting base 21 and corresponds to the lifting range of the cooling moving base 4. Since the height of each preform is different during cooling, the lifting range of the cooling rod 5 will also be different. The proximity switch effectively limits the lifting range of the cooling rod 5, ensuring that the cooling rod 5 can approach the bottom of the preform and ensuring accurate air blowing cooling.

[0039] The working principle of this embodiment is as follows: First, the telescopic cylinder 10 drives the blow molding head 7 to extend into the mold, while the sealing head 13 seals the blow molding opening of the mold. Then, the air supply combination valve 8 opens the blow molding air passage 9 that needs to be blown by the blow molding head 7, completing the blow molding of the preform in the mold. Next, the servo motor 19 drives the drive gear 18 to rotate, and then meshes with the vertical rack 17 to drive the cooling moving seat 4 down, so that the cooling rod 5 approaches the bottom of the preform. Then, air is blown from the cooling hole 12 on the cooling rod 5 through the cooling air passage 6 to complete the cooling of the bottom of the preform.

[0040] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and alterations to the technical solution of the present utility model without departing from its design spirit shall fall within the protection scope defined by the claims of the present utility model.

Claims

1. A bottle preform blow molding and cooling apparatus comprising a mounting base, characterized by: The mounting seat is slidably installed with a lifting slide, the lifting slide is fixedly installed with a cooling mobile seat, the lifting slide is driven to lift by a lifting power device, the cooling mobile seat is fixedly installed with a plurality of cooling rods which extend downward to blow gas, the cooling mobile seat is provided with a cooling gas passage which is communicated with the cooling rods, the mounting seat is also installed with a blow molding head which is inserted into a mold to block blow molding, the blow molding head is driven to extend and retract downward by a telescopic power device, the mounting seat is also fixedly installed with a gas supply combination valve which supplies gas to the blow molding head, and the cooling rods and the blow molding head are one-to-one corresponding and inserted into the blow molding head.

2. A parison blow and cooling apparatus as defined in claim 1, characterized in that: The mounting seat comprises a cooling mounting seat and a blow molding mounting seat, the cooling mounting seat and the blow molding mounting seat are fixedly installed on corresponding table surfaces respectively, the lifting slide is slidably installed on the cooling mounting seat, the cooling mounting seat is provided with a detection inductive device which detects the position of the cooling mobile seat when the cooling mobile seat lifts, and the blow molding head and the gas supply combination valve are fixedly installed on the blow molding mounting seat, the blow molding mounting seat is provided with a blow molding gas passage which is communicated with the gas supply combination valve and the blow molding head.

3. A parison blow and cooling apparatus as defined in claim 2, characterized in that: The telescopic power device comprises a telescopic cylinder, the telescopic cylinder is fixedly installed on the blow molding mounting seat, and the telescopic cylinder is provided with a corresponding air inlet to drive the blow molding head to extend and retract and the cooling rods to penetrate through the telescopic cylinder and be located in the blow molding head.

4. A parison blow and cooling apparatus as defined in claim 3 wherein: The blow molding head is detachably installed with a blocking head which is suitable for different molds.

5. A parison blow and cooling apparatus as defined in claim 4 wherein: The end of the blow molding head is provided with a thread, the blocking head is fixedly provided with a lower circular nut which is threadedly connected with the end of the blow molding head, the end of the blow molding head is provided with an upper circular nut, and the upper circular nut presses the lower circular nut.

6. A parison blow and cooling apparatus as defined in claim 5 wherein: The telescopic cylinder is provided with a blow molding pipeline which is communicated with the blow molding head, the blow molding pipeline is synchronously extended and retracted with the blow molding head, and the gas output of the blow molding head becomes larger with the extension of the blow molding pipeline.

7. A parison blow and cooling apparatus as defined in claim 6 wherein: The cooling mobile seat is vertically connected with a vertical rack, the cooling mounting seat is rotatably installed with a driving gear which cooperates with the vertical rack, and the driving gear is driven to rotate by a servo motor.

8. A parison blow and cooling apparatus as defined in claim 7, characterized in that: The cooling mounting seat is also provided with a limiting block which limits the lifting and shaking of the vertical rack.

9. A parison blow and cooling apparatus as defined in claim 8 wherein: The detection inductive device is a proximity switch, and the proximity switch is fixed on the upper end and the lower end of the cooling mounting seat by a proximity switch mounting seat and corresponds to the lifting range of the cooling mobile seat.

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