Cooling mechanism for blow molding plastic barrels

Abstract

The utility model discloses a kind of cooling mechanisms for plastic bucket blow molding production, including support, pillar and cooling assembly;Support: its front and rear inner wall between left and right symmetry fixedly connected with pillar;Cooling assembly: it includes sliding block, half sleeve, fin and radiating pipe, the outer arc surface of the sliding block is respectively symmetrically slidingly connected in the pillar, the upper surface of sliding block is respectively fixedly connected with half sleeve, the outer arc surface of half sleeve is respectively equipped with evenly distributed radiating pipe, the outer arc surface of radiating pipe is respectively equipped with evenly distributed fin, fin is respectively fixedly connected with the outer arc surface of half sleeve located at the same side, prevent cooling temperature temperature difference too big, the cooling assembly further includes cylinder, bidirectional rotating seat, push rod and rotating rod, the inside lower side of support is located in cylinder, the telescopic end of cylinder is fixedly connected with bidirectional rotating seat, this cooling mechanism for plastic bucket blow molding production, cause the problem of the concave appearance on the surface of plastic bucket.

Description

Technical Field

[0001] This utility model relates to the field of plastic bucket production technology, specifically a cooling mechanism for blow molding production of plastic buckets. Background Technology

[0002] Plastic buckets are mostly made of polyethylene, polypropylene and other plastics through blow molding and injection molding. They are used as outer packaging for liquid and solid products in industries such as chemicals, pesticides, pharmaceuticals, food, hardware, electronics and electromechanical. In the blow molding process, plastic buckets need to be cooled after being removed from the mold to ensure their strength.

[0003] In the prior art, patent publication number CN202321201119.6 discloses a cooling device for blow molding production, including a mold. The mold includes a first half mold and a second half mold that are arranged in opposition. After the first half mold and the second half mold are aligned, a cavity is formed inside for the preform to be blown and formed. After the first half mold and the second half mold are aligned, a through groove is provided at the parting line, and the through groove is used to accommodate the cooling part.

[0004] The above-mentioned cooling device has some problems in actual use. Directly using low temperature to cool the plastic bucket in a single mold may lead to a large temperature difference, which may cause the surface temperature of the plastic bucket to drop rapidly after blow molding and shrink. Therefore, we propose a cooling mechanism for blow molding production of plastic buckets. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a cooling mechanism for blow molding production of plastic buckets, which is less likely to cause the surface of the plastic buckets to shrink, and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cooling mechanism for blow molding production of plastic buckets, comprising a support frame, a support column, and a cooling assembly;

[0007] The support frame is symmetrically and fixedly connected to the inner walls on the left and right sides.

[0008] Cooling assembly: It includes a slider, a half sleeve, heat sinks and heat pipes. The slider is symmetrically slidably connected to the outer arc surface of the support column. The upper surface of the slider is fixedly connected to the half sleeve. The outer arc surface of the half sleeve is provided with uniformly distributed heat sinks. The outer arc surface of the heat sinks is provided with uniformly distributed heat sinks. The heat sinks are fixedly connected to the outer arc surface of the half sleeve on the same side to prevent the temperature difference from being too large, which could cause the surface of the plastic bucket to dent.

[0009] Furthermore, the cooling assembly also includes a cylinder, a bidirectional rotary seat, a push rod, and a rotating rod. The cylinder is located inside the lower middle side of the bracket. The telescopic end of the cylinder is fixedly connected to the bidirectional rotary seat. The push rod is symmetrically connected to the inside of the bidirectional rotary seat. A rotating rod is fixedly connected between every two laterally adjacent half-sleeves. The middle part of the outer arc surface of the rotating rod is rotatably connected to the upper end of the push rod located on the same side. The air inlet of the cylinder is connected to an external air pump to realize the function of clamping the half-sleeves.

[0010] Furthermore, the cooling assembly also includes a through pipe, with each pair of horizontally adjacent heat dissipation pipes connected by a through pipe, thereby enabling the left heat dissipation pipe to connect with the right heat dissipation pipe.

[0011] Furthermore, each of the support columns is provided with a primary positioning plate in the middle, and the lower side wall of each half sleeve is provided with a semi-circular groove to achieve the function of sealing the lower side.

[0012] Furthermore, each of the primary positioning disks is equipped with an infrared position sensor on its upper surface. The infrared position sensors are bidirectionally electrically connected to the external blow molding machine controller to achieve precise positioning.

[0013] Furthermore, water supply hoses are provided on the left side of the two heat dissipation pipes on the left and on the right side of the two heat dissipation pipes on the right. The ends of the four water supply hoses are all connected to external coolant circulation equipment to realize the function of connecting to external cooling equipment and supplying coolant.

[0014] Furthermore, a plastic bucket is placed inside every two longitudinally adjacent half-sleeves to determine the location of the plastic bucket that needs to be cooled.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This cooling mechanism for blow molding production of plastic buckets has the following advantages:

[0016] This cooling mechanism uses a two-way support linkage mechanism. As the cylinder extends and retracts, it drives the front half-sleeve and the rear half-sleeve to move closer and further apart simultaneously, sealing the plastic bucket to be cooled and allowing it to receive the cooling operation. The cooling is performed twice to form a cooling gradient, preventing excessive temperature differences that could cause dents on the surface of the plastic bucket. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention during an explosion.

[0019] In the diagram: 1. Bracket, 2. Support column, 3. Primary positioning plate, 4. Cooling component, 41. Slider, 42. Half sleeve, 43. Heat sink, 44. Heat pipe, 45. Through pipe, 46. Cylinder, 47. Two-way rotary seat, 48. Push rod, 49. Rotary rod, 5. Plastic bucket, 6. Water supply hose, 7. Infrared position sensor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-2 This embodiment provides a technical solution: a cooling mechanism for blow molding production of plastic buckets, including a support 1, a pillar 2 and a cooling component 4;

[0022] Support 1: Columns 2 are symmetrically fixed between its front and rear inner walls. When the cooling mechanism is needed, the mechanism can be installed on the designated station of the external blow molding machine through the support 1.

[0023] Cooling assembly 4 includes a slider 41, a half-sleeve 42, heat sinks 43, and heat pipes 44. The slider 41 is symmetrically slidably connected to the outer arc surface of the support column 2. The upper surface of the slider 41 is fixedly connected to the half-sleeve 42. The outer arc surface of the half-sleeve 42 is provided with evenly distributed heat sinks 44. The outer arc surface of the heat sinks 44 is provided with evenly distributed heat sinks 43. The heat sinks 43 are fixedly connected to the outer arc surface of the half-sleeve 42 on the same side. Cooling assembly 4 also includes a cylinder 46, a bidirectional rotary seat 47, a push rod 48, and a rotating rod 49. The cylinder 46 is located in the lower middle part of the support 1. The telescopic end of the cylinder 46 is fixedly connected to the bidirectional rotary seat 47. The push rod 48 is symmetrically rotatably connected to the inside of the bidirectional rotary seat 47. Every two horizontally adjacent half-sleeves 42 are connected to the push rod 49. A rotating rod 49 is fixedly connected between the sleeves 42. The middle part of the outer arc surface of the rotating rod 49 is rotatably connected to the upper end of the push rod 48 located on the same side. The air inlet of the cylinder 46 is connected to an external air pump. The cooling assembly 4 also includes a through pipe 45. Each pair of horizontally adjacent heat dissipation pipes 44 is connected by a through pipe 45. The middle part of the support column 2 is provided with a primary positioning plate 3. The lower side wall of the half sleeve 42 is provided with a semi-circular groove. The upper surface of the primary positioning plate 3 is provided with an infrared position sensor 7. The infrared position sensors 7 are bidirectionally electrically connected to the external blow molding machine controller. The left side of the two heat dissipation pipes 44 on the left and the right side of the two heat dissipation pipes 44 on the right are provided with water supply hoses 6. The ends of the four water supply hoses 6 are externally connected to an external coolant circulation device. Each pair of longitudinal A plastic bucket 5 is installed inside the adjacent half-sleeve 42. The cylinder 46 is then installed in the corresponding position. The external coolant circulation system can then be controlled. Coolant enters the right-side radiator pipe 44 from the two water supply hoses 6 on the right, then flows through the through pipe 45 to the inside of the left-side radiator pipe 44, and then drains into the external coolant circulation system along the left-side water supply hose 6. At this point, the external blow molding machine controller can be controlled, and the two infrared position sensors 7 are activated. The infrared position sensors 7 emit infrared light, providing a visible laser mark. The laser mark can be observed visually, and the position of the plastic bucket can be finely adjusted to be directly above the primary positioning plate 3 on the right. The blow molding head of the blow molding machine then clamps the blow-molded plastic bucket using an internal support mechanism. The blow-molded and initially cooled plastic bucket is moved between the two half-sleeves 42 on the right side. At this time, the laser marking line is illuminated on the outer surface of the plastic bucket, completing the positioning. Then, the interface controls the external air pump, and the cylinder 46 operates. The telescopic end of the cylinder 46 retracts, thereby driving the bidirectional rotary seat 47 to move downward. This, in turn, pulls the push rod 48 through the rotating rod 49, forcing the two push rods 48 to move closer together. This brings the half-sleeves 42 closer together, at which point the primary positioning plate 3 aligns with the semi-circular groove, completing the sealing operation. This also causes the two half-sleeves 42 on the right side to clamp the outer surface of the plastic bucket. At this point, the external coolant circulation equipment can be controlled to circulate the coolant. The heat from the surface of the plastic bucket is then dissipated to the side wall of the half-sleeves 42 and then to the heat sink 43.Then, as the cooling water circulates continuously, it carries away heat and cools the surface of the plastic bucket. Once cooling is complete, the two half-sleeves 42 on the left can be reset. At this point, the partially cooled plastic bucket can be moved to the left, between the two half-sleeves 42, using the clamping head of the external blow molding machine. Then, the next uncooled plastic bucket is moved to the two half-sleeves 42 on the right, and the above process is repeated. It should be noted that the cooling water flows from right to left, so the cooling temperature inside the left half-sleeve 42 is lower than that inside the right half-sleeve 42. Therefore, the two half-sleeves 42 on the left provide two-stage cooling, while the right half-sleeves 42 provide two-stage cooling. The two side sleeves 42 provide primary cooling. When the first plastic bucket is being cooled, the cooling water does not circulate, and the cooling time is relatively short to prevent prolonged contact with excessively low temperatures. After the first plastic bucket completes its first cooling cycle, it undergoes a second cooling cycle. The coolant supply is intermittent. Coolant circulation only begins when the front and rear sleeves 42 are clamped together; circulation stops when they are not clamped. This two-stage cooling process prevents excessive temperature differences that could cause dents on the surface of the plastic bucket.

[0024] The working principle of the cooling mechanism for plastic bucket blow molding production provided by this utility model is as follows: When the cooling mechanism is needed, it can be installed on the designated station of the external blow molding machine via the bracket 1. Then, the cylinder 46 is also installed in the corresponding position. Then, the external coolant circulation equipment can be controlled. The coolant enters the right-side heat dissipation pipe 44 from the two water supply hoses 6 on the right side, and then flows through the through pipe 45 to the inside of the left-side heat dissipation pipe 44. Then, it is discharged into the external coolant circulation equipment along the left-side water supply hose 6. At this time, the external blow molding machine controller can be controlled, and the two infrared position sensors 7 are turned on respectively. The infrared position sensors 7 emit infrared rays, providing a visible laser mark. At this time, the laser mark can be observed with the naked eye. The laser pointer is positioned and the plastic bucket is finely adjusted to be directly above the primary positioning plate 3 on the right. At this time, the blow molding head of the blow molding machine clamps the blow-molded plastic bucket with an internal support, moving the blow-molded and initially cooled plastic bucket between the two half-sleeves 42 on the right. The laser pointer then illuminates the outer surface of the plastic bucket, completing the positioning. At this time, the interface controls the external air pump, and the cylinder 46 operates. The telescopic end of the cylinder 46 retracts, thereby moving the bidirectional rotary seat 47 downward. This, in turn, pulls the push rod 48 through the rotating rod 49, forcing the two push rods 48 to move closer together, thus bringing the half-sleeves 42 closer together. At this time, the primary positioning plate 3 aligns with the semi-circular groove, completing the sealing operation, and causing the two half-sleeves 42 on the right to clamp the plastic. At this point, the external coolant circulation system can be adjusted to circulate the cooling water around the outer surface of the bucket. Heat from the plastic bucket surface dissipates to the side wall of the half-sleeve 42 and then to the heat sink 43. As the cooling water continues to circulate, it carries away heat and cools the surface of the plastic bucket. Once cooling is complete, the two half-sleeves 42 on the left side can be reset. Then, the partially cooled plastic bucket can be moved to the left between the two half-sleeves 42 using the clamping head of the external blow molding machine. The next uncooled plastic bucket is then moved between the two half-sleeves 42 on the right side, and the process is repeated. It is important to note that the cooling water flows from right to left, so the cooling temperature inside the left half-sleeve 42 must be lower than that on the right. The cooling temperature inside the half-sleeve 42 is such that the two half-sleeves 42 on the left are for secondary cooling, and the two half-sleeves 42 on the right are for primary cooling. When the first plastic bucket is being cooled, the cooling water will not circulate and the cooling time is relatively short to prevent the first plastic bucket from being exposed to excessively low temperatures for a long time. After the first plastic bucket has completed one cooling cycle, it will undergo a second cooling cycle. The coolant is supplied intermittently. When the front half-sleeve 42 and the rear half-sleeve 42 are clamped together, the coolant circulation will begin. When the front half-sleeve 42 and the rear half-sleeve 42 are not clamped together, the coolant circulation will stop. The plastic bucket undergoes two temperature cooling cycles to prevent excessive temperature differences from causing dents on the surface of the plastic bucket.

[0025] It is worth noting that the cylinder 46 and infrared position sensor 7 disclosed in the above embodiments can be freely configured according to the actual application scenario. It is recommended to use the cylinder 46 and the infrared position sensor 7 to use the FU63511C5-GC16 model red crosshair cursor. The blow molding machine controller controls the operation of the infrared position sensor 7 using methods commonly used in the prior art.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cooling mechanism for blow molding production of plastic buckets, characterized in that: It includes a support frame (1), a support column (2), and a cooling assembly (4); Support (1): Its front and rear inner walls are symmetrically fixed with support columns (2); Cooling assembly (4): It includes a slider (41), a half sleeve (42), a heat sink (43) and a heat pipe (44). The slider (41) is symmetrically slidably connected to the outer arc surface of the support column (2). The upper surface of the slider (41) is fixedly connected to the half sleeve (42). The outer arc surface of the half sleeve (42) is provided with uniformly distributed heat pipes (44). The outer arc surface of the heat pipes (44) is provided with uniformly distributed heat sinks (43). The heat sinks (43) are fixedly connected to the outer arc surface of the half sleeve (42) located on the same side.

2. The cooling mechanism for blow molding production of plastic buckets according to claim 1, characterized in that: The cooling assembly (4) also includes a cylinder (46), a bidirectional rotary seat (47), a push rod (48), and a rotating rod (49). The cylinder (46) is located inside the lower middle side of the bracket (1). The telescopic end of the cylinder (46) is fixedly connected to the bidirectional rotary seat (47). The push rod (48) is symmetrically connected to the inside of the bidirectional rotary seat (47). A rotating rod (49) is fixedly connected between every two horizontally adjacent half sleeves (42). The middle part of the outer arc surface of the rotating rod (49) is rotatably connected to the upper end of the push rod (48) located on the same side. The air inlet of the cylinder (46) is connected to an external air pump.

3. The cooling mechanism for blow molding production of plastic buckets according to claim 1, characterized in that: The cooling assembly (4) also includes a through pipe (45), and each pair of horizontally adjacent heat dissipation pipes (44) are connected by a through pipe (45).

4. The cooling mechanism for blow molding production of plastic buckets according to claim 1, characterized in that: Each of the support columns (2) is provided with a primary positioning plate (3) in the middle, and the lower side wall of the half sleeve (42) is provided with a semi-circular groove.

5. A cooling mechanism for blow molding production of plastic buckets according to claim 4, characterized in that: The upper surface of the primary positioning disk (3) is provided with an infrared position sensor (7), and the infrared position sensor (7) is bidirectionally electrically connected to the external blow molding machine controller.

6. A cooling mechanism for blow molding production of plastic buckets according to claim 1, characterized in that: Water supply hoses (6) are provided on the left side of the two heat dissipation pipes (44) on the left side and on the right side of the two heat dissipation pipes (44) on the right side. The ends of the four water supply hoses (6) are all connected to external coolant circulation equipment.

7. A cooling mechanism for blow molding production of plastic buckets according to claim 1, characterized in that: A plastic bucket (5) is provided inside each pair of longitudinally adjacent half sleeves (42).

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