Environment-friendly bottle blank adjustable upside-down mould head for plastic bottle processing

Abstract

This utility model discloses an environmentally friendly adjustable inverting die head for processing plastic bottle preforms, including a blown film machine. A transport trough passes beneath the forming mold of the blown film machine, and a transport chain is connected internally to the transport trough. Several equally spaced bases are mounted above the transport chain, and plastic bottles are fitted onto the inverting die heads. Each inverting die head consists of three symmetrically arranged die heads arranged in a ring. Different sized top blocks are inserted into the gap between the three die heads. The gap between the three die heads without the top blocks represents the minimum inverting size. Rectangular through-slots are machined on the inner surfaces of each of the three die heads, and top blocks are embedded downwards within these rectangular through-slots. Magnetic suction plates are also embedded in the inner surfaces of the rectangular through-slots. This adjustable inverting die head allows for adjustment of its size within a certain range to accommodate preforms of various sizes, reducing the need to replace all inverting die heads and minimizing waste parts, resulting in better environmental performance.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic bottle processing equipment, and more specifically, to an environmentally friendly adjustable inverted die head for processing plastic bottle preforms. Background Technology

[0002] The initial raw material for processing most existing medicine bottles or baby bottles is a preform. The preform is usually cylindrical and smaller in volume than the finished bottle. During transportation on the production line, the preform is usually inverted on the die head. After being heated, it enters the blown film mold of the blown film machine. The blown film mold is the molded shape of the finished plastic bottle to be processed. By vacuuming, the preform clamped between the blown film molds is blown to obtain the formed plastic bottle product.

[0003] In the actual processing, because the existing bottle preform inversion die head has a fixed size, it can only fit one size of bottle preform. When it is necessary to change the product, all inversion dies on the transport line need to be replaced accordingly, which is time-consuming and labor-intensive. Replacing the discarded parts will also cause pollution in the factory area, which is not environmentally friendly. Utility Model Content

[0004] The purpose of this invention is to provide an environmentally friendly adjustable inverted die head for processing plastic bottle preforms. This adjustable inverted die head can be adjusted within a certain range to accommodate preforms of more sizes, reducing the consumption of replacing all inverted dies and waste parts, thus achieving better environmental protection.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An environmentally friendly adjustable inverted die head for processing plastic bottle preforms includes a blown film machine. A conveyor trough passes beneath the forming mold of the blown film machine. A conveyor chain is connected internally to the conveyor trough. An inverted die head is mounted above the conveyor chain via several equidistant bases. A plastic bottle is fitted onto the inverted die head. The inverted die head consists of three symmetrically arranged die heads surrounding each other. Different sized top blocks are inserted into the gap between the three die heads. The minimum inverted size is achieved when no top blocks are inserted into the gap between the three die heads. Rectangular through-slots are machined on the inner surfaces of the three die heads, and top blocks are embedded downwards within these rectangular through-slots. Magnetic plates are embedded in the inner surfaces of the rectangular through-slots. Magnetic plates aligned with the magnetic plates on the inner surfaces of the rectangular through-slots are embedded on the three sides of each top block.

[0007] As a further optimization of this solution, the outer surfaces of the three mold heads are arc-shaped and the arc-shaped surfaces fit the inner area of ​​the inverted plastic bottle mouth. Each of the three mold heads has a slider fixed to its bottom surface. The slider is embedded in a groove opened on the upper surface of the lower base. A mounting plate is fixed to the inner side of the groove. A return spring is connected between the mounting plate and the slider. In the initial state, the return spring pulls the three mold heads inward to the minimum inverted size.

[0008] As a further optimization of this solution, three positioning posts are machined at the center of the upper surface of the base, arranged in an equilateral triangle with the center of the base as the center. The positioning posts are inserted into the positioning holes on the lower surface of the top block.

[0009] As a further optimization of this solution, when the top block is embedded downward into the area between the three mold heads, it pushes the three mold heads outward so that the three mold heads slide outward along the slide groove.

[0010] As a further optimization of this solution, each of the top blocks is provided with a lifting handle on its upper surface. The top blocks of different sizes are enlarged or reduced proportionally with the lifting handle as the center. The lifting handles and the positioning holes below the top blocks of different sizes are the same size.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0012] This invention utilizes top blocks of different sizes and an inverted die head structure composed of three symmetrical die heads surrounding the top blocks. This allows for adjustment of the size of the inverted die head. When the top blocks of different sizes are inserted downwards into the area between the three die heads, they push the three die heads outwards, causing them to slide outwards along the grooves. This expands the size of the inverted die head to accommodate more bottle preforms, reducing the need to replace all the inverted die heads and minimizing waste parts, resulting in better environmental performance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the adjustable inverted mold head installation structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the disassembled structure of the adjustable inverted mold head of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure below the three mold heads of this utility model;

[0016] Figure 4 Schematic diagrams of the top block structures of this utility model in different sizes;

[0017] In the diagram: 1. Film blowing machine; 2. Transport trough; 3. Transport chain; 4. Base; 5. Die head; 6. Top block; 7. Plastic bottle; 8. Magnetic plate; 9. Lifting handle; 10. Positioning post; 11. Slide groove; 12. Mounting plate; 13. Return spring; 14. Slider; 15. Positioning hole. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0019] To address the issue that existing preform inversion die heads have fixed dimensions, allowing only one size of preform to be fitted, and that changing products necessitates replacing all inversion dies on the transport line accordingly—a time-consuming and labor-intensive process—and that the discarded replacement parts also cause pollution within the factory, which is environmentally unfriendly, the following solutions are needed.

[0020] like Figure 1 As shown, this application includes a blown film machine 1. The forming mold of the blown film machine 1 passes through a transport trough 2. A transport chain 3 is connected inside the transport trough 2. An inverted die head is installed above the transport chain 3 through several equally spaced bases 4. A plastic bottle 7 is fitted on the inverted die head. The inverted die head is composed of three symmetrical die heads 5 surrounding each other. Different sized top blocks 6 are inserted into the gap area between the three die heads 5. The minimum inverted size is when the top blocks 6 are not inserted into the gap area between the three die heads 5.

[0021] like Figure 2 and Figure 3 As shown, rectangular through slots are machined on the inner sides of the three mold heads 5, and top blocks 6 are embedded downward inside the rectangular through slots. Magnetic suction plates 8 are embedded and installed on the inner sides of the rectangular through slots. Magnetic suction plates 8 that are aligned with the magnetic suction plates 8 on the inner sides of the rectangular through slots are embedded and installed on the three sides of the top blocks 6, which are used for positioning and magnetic connection when the top blocks 6 are embedded downward.

[0022] The outer surfaces of the three mold heads 5 are arc-shaped and fit the inner area of ​​the bottle mouth of the inverted plastic bottle 7. The bottom surfaces of the three mold heads 5 are all fixed with sliders 14. The sliders 14 are embedded in the grooves 11 opened on the upper surface of the lower base 4. The inner side of the grooves 11 is fixed with mounting plates 12. A return spring 13 is connected between the mounting plates 12 and the sliders 14. In the initial state, the return spring 13 pulls the three mold heads 5 inward to the minimum inverted size.

[0023] Three positioning posts 10 are machined at the center of the upper surface of the base 4 in an equilateral triangle pattern centered on the center of the base 4. The positioning posts 10 are aligned and inserted into the positioning holes 15 on the lower surface of the top block 6.

[0024] like Figure 4As shown, each of the top blocks 6 has a lifting handle 9 on its upper surface. The top blocks 6 of different sizes are enlarged or reduced proportionally with the lifting handle 9 as the center. The lifting handle 9 and the positioning hole 15 below the top blocks 6 of different sizes are the same size.

[0025] Specifically, in the initial state, the return spring 13 pulls the three mold heads 5 inward and into contact. At this time, it is the minimum size of the adjustable inverting mold head, which can be used to invert plastic bottles 7 with the smallest bottle mouth. If it is necessary to adjust the size of the inverting mold head, a top block 6 of appropriate size can be selected. Hold the lifting handle 9 and insert the top block 6 into the gap area between the three mold heads 5. The three sides of the top block 6 slide down along the rectangular through groove, pushing the three mold heads 5 outward so that the three mold heads 5 slide outward along the slide groove 11, thereby expanding the size of the inverting mold head until the positioning hole 15 under the top block 6 is aligned with the positioning post 10 of the base 4. The magnetic suction plates 8 on the three sides of the top block 6 are aligned with the magnetic suction plates 8 on the inner side of the rectangular through groove and magnetically attached to the positioning post 10, completing the adjustment work. At this time, the adjustable inverting mold head can invert plastic bottles 7 with larger bottle mouths.

[0026] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0027] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable inverted die head for processing environmentally friendly plastic bottles, comprising a blown film machine, wherein a conveyor trough passes beneath the forming mold of the blown film machine, a conveyor chain is connected internally to the conveyor trough, and an inverted die head is mounted above the conveyor chain via several equally spaced bases, and a plastic bottle is fitted onto the inverted die head, characterized in that: The inverted die head consists of three symmetrically arranged die heads surrounding each other. Different sized top blocks are inserted into the gap area between the three die heads. The gap area between the three die heads without the top blocks is the minimum inverted size. Each of the three die heads has a rectangular through groove machined on its inner side, and a top block is embedded downward inside the rectangular through groove. A magnetic suction plate is embedded in the inner side of the rectangular through groove. Magnetic suction plates that align with the magnetic suction plates on the inner side of the rectangular through groove are embedded in the three sides of the top block.

2. The adjustable inverted die head for processing environmentally friendly plastic bottles according to claim 1, characterized in that: The outer surfaces of the three mold heads are arc-shaped and fit the inner area of ​​the inverted plastic bottle mouth. Each of the three mold heads has a slider fixed to its bottom surface. The slider is embedded in a groove on the upper surface of the base below. A mounting plate is fixed to the inner side of the groove. A return spring is connected between the mounting plate and the slider. In its initial state, the return spring pulls the three mold heads inward to the minimum inverted size.

3. The adjustable inverted die head for processing environmentally friendly plastic bottles according to claim 2, characterized in that: Three positioning posts are machined at the center of the upper surface of the base, arranged in an equilateral triangle with the center of the base as the center. The positioning posts are inserted into the positioning holes on the lower surface of the top block.

4. The adjustable inverted die head for processing environmentally friendly plastic bottles according to claim 3, characterized in that: When the top block is inserted downward into the area between the three mold heads, it pushes the three mold heads outward, causing them to slide outward along the slide groove.

5. The adjustable inverted die head for processing environmentally friendly plastic bottles according to claim 4, characterized in that: Each of the top blocks is provided with a lifting handle on its upper surface. The top blocks of different sizes are enlarged or reduced proportionally with the lifting handle as the center. The lifting handles and the positioning holes below the top blocks of different sizes are the same size.

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