Blow molding mold front and rear limiting stabilizing device for plastic bottle processing
By setting adjustable buffer strip limit devices on both sides of the blown film mold, the problem of swaying of preforms and plastic bottles during the transmission chain jerking process is solved, ensuring transportation stability, avoiding falling and contamination, and improving processing quality and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANNING QIAO PACKAGING CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-02
AI Technical Summary
During the plastic bottle processing, the preforms and molded plastic bottles are prone to shaking during the jerking of the transmission chain, which can lead to collision damage and falling, affecting processing quality, causing pollution in the factory area, and wasting raw materials.
A front and rear limiting and stabilizing device was designed. Adjustable buffer strips were set on both sides of the blown film mold to limit the shaking range of the preform and plastic bottle and ensure transportation stability.
It effectively prevents bottle preforms and plastic bottles from falling off, ensures processing quality, reduces factory pollution, saves raw materials, and achieves green and environmentally friendly production.
Smart Images
Figure CN224311167U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of plastic bottle processing equipment, and more specifically, to a front and rear limiting and stabilizing device for blow molding dies used in plastic bottle processing. Background Technology
[0002] The initial raw material for plastic bottle processing is the preform, which is generally cylindrical and inverted on a support mold head. After being heated, it enters the blown film mold of the blown film machine. The inside of the blown film mold is the molded shape of the finished plastic bottle to be processed. By drawing a vacuum, the preform clamped between the blown film molds is blown to obtain the formed plastic bottle product.
[0003] In actual processing, the support mold heads are arranged in rows and driven forward in stages by the transmission chain inside the mounting slots on both sides. Since the preform needs to stay inside the blown film mold for a certain period of time, the movement of the transmission chain is jerky. Generally, the diameter of the support mold head is smaller than the diameter of the bottle mouth of the preform to facilitate subsequent handling by the robot. Therefore, during the jerky process of the transmission chain, the inverted preform and the subsequently formed inverted plastic bottle are prone to violent shaking, which can cause collision damage between adjacent preforms or plastic bottles, affecting the processing quality. At the same time, when the transmission chain ages and the forward jerky process becomes large, the preform or plastic bottle will shake violently and fall off the support mold head, landing on the factory floor, causing pollution, which is not environmentally friendly and wastes processing materials. Utility Model Content
[0004] The purpose of this invention is to provide a front and rear limiting and stabilizing device for blow molding dies used in plastic bottle processing. This stabilizing device can perform limiting and stabilizing operations on the preform and plastic bottle at the front and rear of the blow molding die, maintaining the transport stability of the preform and plastic bottle when the transmission chain experiences a sudden drop, preventing the preform and plastic bottle from falling out of the supporting die head, ensuring processing quality while reducing environmental pollution in the factory area, saving processing raw materials, and being green and environmentally friendly.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A front and rear limiting and stabilizing device for a blow molding die for plastic bottle processing includes a top plate of a blow molding machine and side plates on both sides below the top plate. A control panel is provided on the outer side of the side plates. A positioning post is located downwards at the center of the lower surface of the top plate, extending into the slotted area in the middle of the blow molding die. The blow molding die consists of two symmetrical parts, each with its outer side connected to the inner side of the side plate via a telescopic cylinder. A vacuum pipe is connected to the side of the blow molding die. Guide pressure plates are provided on the outer sides of the blow molding die. A mounting groove with an embedded transmission chain passes through the bottom of the blow molding die. Several support mold heads are connected between the mounting grooves via a transmission chain. Bottle preforms or plastic bottles are inverted on the support mold heads. Front limiting and stabilizing devices are provided on both sides of the bottle preforms, and rear limiting and stabilizing devices are provided on both sides of the plastic bottles. The front and rear limiting and stabilizing devices have the same structure.
[0007] As a further optimization of this solution, the front limiting stabilizing device includes supports located on both sides of the mounting groove. Each support has a set of parallel threaded rods at both ends of its upper surface. Two height adjustment plates are fitted onto the parallel threaded rods. A through hole is opened at the center of the surface of each height adjustment plate, and a connecting rod passes through the through hole. The height adjustment plates are limited in height on the parallel threaded rods by nuts on both the upper and lower ends. The connecting rod is limited by tightening bolts on the upper surface of the height adjustment plates.
[0008] As a further optimization of this solution, the inner end of the connecting rod is connected to a slot, and a stop strip is fitted into the recessed area inside the slot. Several raised areas are evenly spaced on the inner side of the slot, and each raised area is fixed downward to the stop strip by tightening bolts. A buffer strip is bonded to the inner side of the stop strip, and the buffer strip contacts the outer side of the preform or plastic bottle.
[0009] As a further optimization of this solution, the buffer strip on the outside of the preform or plastic bottle contacts the outer periphery of the lower end of the bottle opening and the outer periphery of the upper end of the bottle body, respectively.
[0010] As a further optimization of this solution, the front limit stabilizing device and the rear limit stabilizing device are arranged along the mounting groove.
[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows:
[0012] This invention utilizes a front and rear limiting and stabilizing device structure, arranged along the mounting groove on both sides of the blown film mold, to limit and stabilize the preforms and plastic bottles mounted upside down on the support mold head. The height and contact position of the buffer strip can be flexibly adjusted according to the height and diameter of the preforms and plastic bottles. When the transmission chain experiences a sudden drop, the transport stability of the preforms and plastic bottles is maintained, preventing them from falling off the support mold head. This ensures processing quality while reducing environmental pollution in the factory area, saving processing materials, and promoting green environmental protection. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the installation structure of the front and rear limiting and stabilizing device of this utility model;
[0014] Figure 2 This is a schematic diagram of the preform periphery front limiting and stabilizing device of this utility model;
[0015] Figure 3 This is a schematic diagram of the top connection structure of the support of this utility model;
[0016] In the diagram: 1. Side plate; 2. Top plate; 3. Positioning post; 4. Telescopic cylinder; 5. Blown film mold; 6. Vacuum pipeline; 7. Guide pressure plate; 8. Control panel; 9. Support; 10. Preform; 11. Plastic bottle; 12. Buffer strip; 13. Stop bar; 14. Slot; 15. Tightening bolt; 16. Connecting rod; 17. Height adjustment plate; 18. Nut; 19. Threaded rod. Detailed Implementation
[0017] 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.
[0018] To address the issues of jerking during the existing drive chain, inverted preforms and subsequently molded inverted plastic bottles are prone to violent shaking, leading to collisions and damage between adjacent preforms or plastic bottles, affecting processing quality. Additionally, when the drive chain ages and experiences significant forward jerking, preforms or plastic bottles may violently shake and fall off the support mold, landing on the factory floor, causing pollution, environmental issues, and wasting raw materials.
[0019] like Figure 1As shown, this application includes a top plate 2 of a blown film machine and side plates 1 below the top plate on both sides. A control panel 8 is provided on the outer side of the side plate 1. A positioning post 3 is provided downward at the center of the lower surface of the top plate 2. The positioning post 3 extends into the slotted area in the middle of the blown film mold 5. The blown film mold 5 is composed of two symmetrical parts, and the outer side of each part is connected to the inner side of the side plate 1 through a telescopic cylinder 4. A vacuum pipe 6 is connected to the side of the blown film mold 5. A guide pressure plate 7 is provided on the outer side of the blown film mold 5. A mounting groove with a transmission chain is embedded inside passes through the bottom of the blown film mold 5. Several support mold heads are connected between the mounting grooves through the transmission chain. Bottle preforms 10 or plastic bottles 11 are inverted on the several support mold heads. A front limit stabilizing device is provided on both sides of the bottle preform 10 and a rear limit stabilizing device is provided on both sides of the plastic bottle 11. The front limit stabilizing device and the rear limit stabilizing device have the same structure.
[0020] like Figure 3 As shown, the front limit stabilizing device includes supports 9 located on both sides of the mounting groove. Each end of the upper surface of the support 9 is provided with a set of parallel threaded rods 19. Two height adjustment plates 17 are fitted on the parallel threaded rods 19. A through hole is opened at the center of the surface of the height adjustment plate 17, and the connecting rod 16 passes through the through hole. The height adjustment plate 17 is limited to a certain height on the parallel threaded rods 19 by nuts 18 on both sides of the upper and lower ends. The connecting rod 16 is limited by tightening bolts 15 on the upper surface of the height adjustment plate 17.
[0021] like Figure 2 As shown, the inner end of the connecting rod 16 is connected to a slot 14. A retaining strip 13 is fitted into the recessed area inside the slot 14. Several raised areas are provided at equal intervals on the inner side of the slot 14, and each raised area is fixed downward to the retaining strip 13 by tightening bolts 15. A buffer strip 12 is bonded to the inner side of the retaining strip 13. The buffer strip 12 contacts the outer side of the preform 10 or the plastic bottle 11. The buffer strip 12 on the outer side of the preform 10 or the plastic bottle 11 contacts the outer periphery of the lower end of the bottle mouth and the outer periphery of the upper end of the bottle body, respectively.
[0022] Specifically, the position of the buffer strip 12 can be reasonably adjusted according to the size of different models of bottle preforms 10 and plastic bottles 11. The limiting width of the buffer strip 12 can be adjusted by changing the extension distance of the connecting rod 16, and the limiting height of the buffer strip 12 can be adjusted by adjusting the height of the height adjustment plate 17. This allows the buffer strip 12 to block and limit the bottle preforms 10 and plastic bottles 11 at both sides and vertical positions, limiting the swaying range of the bottle preforms 10 and plastic bottles 11 when the transmission chain jerks. This maintains the transportation stability of the bottle preforms 10 and plastic bottles 11, prevents the bottle preforms 10 and plastic bottles 11 from falling out of the support mold, ensures processing quality, reduces environmental pollution in the factory area, saves processing materials, and is environmentally friendly.
[0023] 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.
[0024] 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. A kind of blow mould front and rear limiting stabilizing device for plastic bottle processing, including blow film machine top plate and the side plate below the both sides of top plate, the outer side of side plate is equipped with control panel, the lower surface of top plate is equipped with positioning column in the center position, positioning column extends into the middle slot area of blow film mould, the blow film mould is composed of two parts of left and right symmetry and each part outer side is connected to the inner side of side plate by telescopic air cylinder, the side of blow film mould is connected with vacuum pipe line, the outer side of blow film mould is equipped with guide pressure plate, the installation slot of drive chain is embedded in the lower side of blow film mould, the installation slot is driven to be connected with several support mould head by drive chain, the several support mould head is upside down with bottle embryo or plastic bottle, it is characterized by: The bottle embryo is provided with front limiting and stabilizing devices on both sides, and the plastic bottle is provided with rear limiting and stabilizing devices on both sides.
2. The front and rear limiting and stabilizing device for blow molding mold for plastic bottle processing according to claim 1, characterized in that: The front limiting and stabilizing device comprises supports on both sides of the mounting groove, and a group of parallel threaded rods are arranged at both ends of the upper surface of the support.
3. The front and rear limiting and stabilizing device for blow molding mold for plastic bottle processing according to claim 2, characterized in that: The height adjusting plates are limited in height position on the parallel threaded rods through nuts on both sides of the upper and lower ends.
4. The front and rear limiting and stabilizing device for blow molding mold for plastic bottle processing according to claim 3, characterized in that: The inner end of the connecting rod is connected with a clamping groove, and the clamping groove is provided with a plurality of convex regions at equal intervals on the inner side surface.
5. The front and rear limiting and stabilizing device for blow molding mold for plastic bottle processing according to claim 4, characterized in that: The buffer strips on the outer side of the bottle embryo or the plastic bottle are respectively in contact with the lower end bottle mouth periphery and the upper end bottle body periphery of the bottle embryo or the plastic bottle. The front limiting and stabilizing device and the rear limiting and stabilizing device are arranged along the trend of the mounting groove.