A blow molding machine with a fan-shaped mold assembly

Abstract

This invention provides a blow molding machine with a fan-shaped mold assembly. Existing blow molding machines suffer from cumbersome conveying structures when using fan-shaped mold assemblies. This invention includes a frame and a mold assembly mounted on the frame. The mold assembly comprises two movable templates that can be mirror-symmetrically opened and closed along a centerline. The lower connecting ends of the movable templates are connected via a transition assembly. When the mold assembly is switched to the open state, the connecting ends of the movable templates separate and form a channel. The transition assembly controls the swing of the movable templates, creating a channel for conveying preforms in the area between the connecting ends when switched to the open state. This allows preforms or bottles to enter and exit the mold assembly through this channel, effectively shortening processing time, improving processing efficiency, simplifying equipment structure, reducing production and maintenance costs, and enhancing the user experience.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing, specifically to a blow molding machine. Background Technology

[0002] Existing blow molding machines include a frame and, mounted on the frame, a mold assembly, a stretching assembly, a conveying assembly, and a heating assembly. The heating assembly heats the preform, the conveying assembly receives the preform from the heating assembly and conveys it to the mold assembly, and the stretching assembly stretches and blows the preform within the mold assembly to form a bottle. Blow molding machines reduce size by using a fan-shaped mold assembly. The mold assembly includes two symmetrically arranged moving mold plates and a rotating shaft positioned between the connecting ends of the moving mold plates. The moving mold plates oscillate mirror-like around the rotating shaft, allowing the mold assembly to switch between an open and closed state.

[0003] Because the moving template inside the fan-shaped mold assembly is located adjacent to the connecting end of the rotating shaft, the mold assembly can only complete the feeding of preforms and the removal of bottles through the swinging end of the moving template away from the rotating shaft. Moreover, the two operations can only be performed alternately, which not only makes the conveying component structure cumbersome, increases production and maintenance costs, and increases the failure rate, but also increases the processing time of each operation due to the alternating preform feeding and bottle removal operations, resulting in reduced production efficiency and affecting the user experience. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a blow molding machine with a fan-shaped mold assembly. The machine utilizes a transfer assembly to control the swing of the moving template and, when switched to the open state, forms a channel for conveying bottle preforms by utilizing the area between the connecting ends of the moving template. This allows the bottle preforms to be input into the mold assembly through the connecting ends of the moving template, effectively shortening the processing time per cycle, improving processing efficiency, simplifying the equipment structure, reducing production and maintenance costs, and enhancing the user experience.

[0005] This invention is achieved through the following method: a blow molding machine with a fan-shaped mold assembly, comprising a frame and a mold assembly mounted on the frame. The mold assembly includes two movable templates that can be mirror-symmetrically opened and closed along a centerline. The lower part of the connecting end of the movable templates is connected by a transition assembly. When the mold assembly is switched to the open state, the connecting ends of the movable templates separate and form a single connection. A transition assembly is provided at the bottom of the connecting end of the movable templates, which guides the swing of the movable templates. A channel is provided between the connecting ends of the movable templates above the transition assembly. This channel can perform preform feeding or bottle removal operations, allowing the preform feeding and bottle removal operations to be performed independently at both ends of the mold assembly, each with its own independent path and without interference. This not only shortens the processing time required for a single operation of the mold assembly by simultaneously performing preform feeding and bottle removal operations, thereby improving processing efficiency, but also effectively simplifies the structure of the conveying assembly, thereby reducing production and maintenance costs and improving the user experience.

[0006] Preferably, the adapter assembly includes connecting ears disposed at the bottom of the moving template connecting end and a rotating shaft connected in series with the connecting ears. The moving template can swing around the rotating shaft and guide the mold assembly to switch between an open state and a closed state. When the mold assembly is switched to the open state, a channel is formed to transport the preform to the mold assembly. The connecting ears at the bottom of the moving template connecting end increase the distance between the moving template connecting end and the rotating shaft, thereby effectively increasing the distance between the connecting ends of the two moving templates when the mold assembly is switched to the open state, ensuring that the channel width meets the preform transport requirements. The preform enters the mold assembly through the channel, and the bottle body moves out of the mold assembly through the area between the swinging ends of the moving template. The preform and the bottle body have the same direction of movement, facilitating synchronous operation and improving processing efficiency.

[0007] Preferably, the channel is arranged along the centerline of the mold assembly, including a feeding channel for horizontal movement of the preform. The feeding channel is located between the top surface of the adapter assembly and the top surface of the mold assembly, and the width of the feeding channel is greater than the diameter of the preform. The moving templates oscillate relative to the centerline. When the mold assembly switches to the closed state, the contact surfaces of the molds between the two moving templates form the centerline. The channel's arrangement along the centerline allows the preform to be conveyed along the channel into the mold assembly and precisely clamped and fixed by the opposing molds, effectively improving processing accuracy. The feeding channel is formed in the area between the top surface of the rotating shaft and the top surface of the moving templates between the connecting ends of the moving templates. The preform can horizontally pass through the feeding channel and move into the mold assembly, ensuring precise feeding. The width of the feeding channel is greater than the diameter of the preform, ensuring that the preform will not be bumped, deformed, or damaged when passing through the feeding channel. The rotating shaft is located at the lower part of the connecting end, ensuring that the height of the feeding channel between the top surface of the rotating shaft and the top surface of the moving template is greater than the height of the bottle preform, thereby ensuring that the bottle preform can be moved into the mold assembly in a horizontal manner.

[0008] Preferably, the frame is equipped with a robotic arm for gripping preforms. The channel includes a conveying channel located above the top surface of the mold assembly. The robotic arm grips the preforms and moves linearly back and forth along the conveying channel, so that the preforms are conveyed into the mold assembly through the preform feeding channel. The conveying channel is located above the mold assembly, and the robotic arm can move linearly back and forth along the conveying channel to convey the preforms. This ensures that the preforms can enter the mold assembly along the preform feeding channel for the mold assembly to clamp and blow into bottles. It also ensures that the robotic arm moves back and forth above the mold assembly to prevent contact with the mold assembly. This ensures that the robotic arm and the mold assembly can operate independently and cooperatively to complete the preform transfer and blowing operations.

[0009] Preferably, the robotic arm is equipped with at least one mechanical gripper. When there are two or more mechanical grippers, they are positioned along the direction of movement of the robotic arm. Since the robotic arm moves in a straight line, multiple mechanical grippers are used to grasp a corresponding number of preforms and transfer them to the corresponding mold cavities within the mold assembly. Because the preforms can pass through the feeding channel in a row, the structure is effectively simplified, and the processing efficiency is improved by increasing the number of preforms processed by the mold assembly at one time, thereby reducing processing costs. The distance between adjacent mechanical grippers matches the distance between adjacent mold cavities within the mold assembly, ensuring that the preforms are synchronously transported to their positions.

[0010] Preferably, the channel includes a bottle-retrieving channel located between the swing ends of the moving template away from the rotating shaft. Bottles formed within the mold assembly are conveyed outwards through this channel under the drive of a robotic arm. The large distance between the swing ends of the moving template and the rotating shaft allows for a greater gap when the mold assembly switches to the open state, thus forming a bottle-retrieving channel for removing the bottles from the mold assembly. When the moving template swings open around the rotating shaft, a preform feeding channel and a bottle-retrieving channel with different widths are formed between the connecting end and the swing end of the moving template. These channels efficiently utilize their respective widths to meet the conveying needs of both preforms and bottles. Furthermore, since the preforms and bottles are conveyed in the same direction, they can be operated synchronously by the robotic arm, effectively simplifying the structure and improving work efficiency.

[0011] Preferably, the mold assembly includes a locking component disposed between the swing ends of the moving template. The locking component includes locking lugs disposed on the swing ends of the moving template and staggered from each other, and a liftable pin. Each locking lug has a through hole. When the mold assembly is switched to the closed state, the locking lugs are staggered and overlapped to align the through holes and be vertically locked by the pin. The locking component positions the swing ends of the moving template when the mold assembly is switched to the closed state, ensuring that the moving template does not shift relative to each other during bottle blowing. The staggered height of the locking lugs on the two moving templates facilitates staggered insertion when the mold assembly is switched to the closed state, facilitates pin insertion and fixation, restricts the swing of the moving template, and improves the vertical positional accuracy of the swing ends of the moving template through vertical stacking and contact, thereby ensuring mold closing accuracy.

[0012] Preferably, the top of the moving template connection end is provided with a limiting component that avoids the channel. The limiting component includes a limiting post on the moving template and a limiting plate that cooperates with the limiting post. The bottom surface of the limiting plate has a downward-facing limiting groove. The limiting plate is fitted onto the limiting post through the limiting groove and restricts the movement of the moving template. Since the rotating shaft is only located at the bottom of the moving template connection end, a limiting component is needed at the top of the connecting end to improve the accuracy and reliability of the movement between the tops. The limiting component restricts the movement of the top of the moving template connection end, ensuring smooth opening and closing of the moving template and ensuring the mold assembly is stably positioned in the closed state. The limiting component avoids the channel, ensuring that the robotic arm can smoothly feed the preform into the mold assembly and preventing mutual interference.

[0013] Preferably, the limiting post is disposed on the top of the moving template, and the limiting groove is arranged in an arc shape with the rotating shaft as the center. The limiting post, which swings synchronously with the moving template, can slide along the arc path in the limiting groove and abut against the groove wall when the mold assembly switches to the closed state, thereby restricting the moving template from linearly separating in a direction perpendicular to the centerline. The limiting groove is arc-shaped and opened with the rotating shaft as the center. The limiting post can slide along the limiting groove, which guides the swing of the moving template. Since the limiting groove provides an arc path for the limiting post, when the mold assembly closes to blow the bottle, the limiting post will receive a force from the moving template in a direction perpendicular to the centerline. This force is inconsistent with the opening path of the limiting groove, so that the limiting groove can position the limiting post and prevent the top of the moving template connection end from separating backwards during bottle blowing, effectively improving the deformation resistance of the mold assembly during bottle blowing.

[0014] Preferably, the limiting post is disposed on the top of the moving template, and the cross-sectional profile of the limiting groove is the same as that of the limiting post. When the mold assembly switches to the closed state, the limiting plate falls from the disengagement position to the limiting position, and the limiting groove is vertically fitted onto the limiting post to restrict the swing of the moving template. The limiting plate only cooperates with the limiting post to perform locking and positioning when the mold assembly switches to the closed state, so that the limiting groove can position the limiting post and prevent the top of the moving template connection end from separating backwards during bottle blowing, effectively improving the deformation resistance of the mold assembly during bottle blowing.

[0015] Preferably, the limiting post is formed by extending upward from the top surface of the moving template, which effectively simplifies the structure and facilitates production.

[0016] Preferably, the limiting posts are installed on the outer side wall of the moving template facing away from the center line via connecting blocks, which effectively increases the distance between the limiting posts, thereby increasing the width of the conveying channel and ensuring that the robotic arm can smoothly shuttle back and forth in the conveying channel.

[0017] Preferably, the limiting posts and the moving template are arranged one-to-one, and the limiting posts share a single limiting plate. Sharing a limiting plate simplifies the structure and facilitates production and use. The limiting plate is always positioned above the conveyor channel, ensuring that the robotic arm can smoothly reciprocate within the conveyor channel.

[0018] The outstanding advantages of this utility model are as follows: A transition component is set at the bottom of the moving template connection end, which guides the swing of the moving template. A channel is set in the area above the transition component between the moving template connection ends. The channel can be used for feeding blanks or removing bottles, so that feeding blanks and removing bottles can be performed independently at both ends of the mold component, with each having its own independent path and not interfering with each other. This can shorten the processing time required for a single mold component by simultaneously performing feeding blanks and removing bottles, thereby improving processing efficiency. It can also effectively simplify the structure of the conveying component, thereby reducing production and maintenance costs and improving the user experience. Attached Figure Description

[0019] Figure 1 This is a partial structural diagram of the blow molding machine;

[0020] Figure 2 This is a schematic diagram of a partial structure of the blow molding machine from another perspective;

[0021] Figure 3 This is a partial structural diagram of the blow molding machine with a stretching assembly;

[0022] Figure 4 This is a schematic diagram of the mold assembly in the open state.

[0023] Figure 5This is a schematic diagram of the mold assembly in the open state from another perspective.

[0024] In the diagram: 1. Frame, 2. Moving template, 3. Connecting ear, 4. Feeding channel, 5. Robotic arm, 6. Conveying channel, 7. Bottle picking channel, 8. Locking ear, 9. Pin, 10. Limiting post, 11. Limiting plate, 12. Limiting groove, 13. Connecting block, 14. Rotating shaft. Detailed Implementation

[0025] The essential features of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 , 2 A blow molding machine, as shown in Figure 3, comprises a frame 1 and a mold assembly, a stretching assembly, and an oven assembly mounted on the frame 1. The mold assembly includes two movable templates 2 that can be opened and closed symmetrically along a centerline. The lower part of the connecting end of the movable templates 2 is connected by a transition assembly. When the mold assembly is switched to the open state, the connecting ends of the movable templates 2 separate and form a channel for conveying bottle preforms to the mold assembly. A transition assembly is provided at the bottom of the connecting end of the movable templates 2, which guides the swing of the movable templates 2. A channel for conveying bottle preforms is provided between the connecting ends of the movable templates 2, located above the transition assembly. This allows the preform feeding operation and the bottle retrieval operation to have independent paths and not interfere with each other. This not only shortens the processing time required by the mold assembly for a single operation by synchronously implementing the preform feeding and bottle retrieval operations, thereby improving processing efficiency, but also effectively simplifies the structure of the conveying assembly, thereby reducing production and maintenance costs and improving the user experience. The bottle preforms produced in the oven are conveyed into the mold assembly so that the bottle preforms are blown into bottles by the stretching assembly.

[0027] In actual operation, the adapter assembly includes connecting ears 3 disposed at the bottom of the connecting end of the moving template 2 and a rotating shaft 14 connected in series with the connecting ears 3. The moving template 2 can swing around the rotating shaft 14 and guide the mold assembly to switch between an open state and a closed state. When the mold assembly is switched to the open state, the channel is formed. The connecting ears 3 are disposed on the bottom of the connecting end of the moving template 2. The connecting ears 3 are formed by the bottom of the connecting end of the moving template 2 extending towards each other. This not only reserves space between the moving templates 2 for mold assembly, but also increases the distance between the connecting end of the moving template 2 and the rotating shaft 14, thereby effectively increasing the distance of the connecting end of the moving template 2 when it swings around the rotating shaft 14.

[0028] In actual operation, the channel is set along the centerline of the mold assembly. When the mold assembly is switched to the open state, the two moving templates 2 are set at an acute angle. The wider gap between the swinging ends of the moving templates 2 forms the bottle-picking channel 7, and the narrower gap between the connecting ends of the moving templates 2 forms the blank-feeding channel 4. A conveying channel 6 is formed above the moving templates 2. The bottle-picking channel 7, the blank-feeding channel 4, and the conveying channel 6 are all set along the centerline of the mold assembly (e.g., Figure 4 As shown, this ensures that both the preform and the bottle can be synchronously transferred under the drive of the robotic arm 5, which effectively simplifies the structure of the blow molding machine and improves conveying efficiency by reducing the processing time per cycle. The fan-shaped opening and closing feature of the mold assembly is utilized to rationally utilize the openings with differentiated widths formed at both ends of the moving template 2 to meet the conveying requirements of the preform and the bottle.

[0029] In actual operation, the robotic arm 5 is equipped with two sets of mechanical claws, each set including at least one mechanical claw. When in use, one set of mechanical claws is used to grasp the blown bottle body in the mold, and the other set of mechanical claws is used to grasp the bottle preform from the oven assembly. When the robotic arm 5 moves along the conveying channel 6, the bottle body is moved away from the mold assembly through the bottle picking channel 7, and the bottle preform is moved into the mold assembly through the preform feeding channel 4. The robotic arm 5 can realize the bottle picking operation and the preform feeding operation simultaneously in a single movement, effectively improving the conveying efficiency and thus improving the processing efficiency.

[0030] In actual operation, the channel includes a preform feeding channel 4 for horizontal movement of the preform. The preform feeding channel 4 is located between the top surface of the transfer assembly and the top surface of the mold assembly, and its width is greater than the preform diameter. The preform feeding channel 4 is situated within the area enclosed by the connecting end of the moving template 2, the top surface of the rotating shaft 14, and the top surface of the moving template 2. The width and height of the preform feeding channel 4 are greater than the preform diameter and height, respectively, to meet the preform conveying requirements. The width of the preform feeding channel 4 is adjusted by setting a reasonable opening and closing angle of the moving template 2 and the length of the connecting lug 3, thereby meeting the passage requirements of different preforms.

[0031] In actual operation, the frame 1 is equipped with a robotic arm 5 for gripping preforms and bottles. The channel includes a conveying channel 6 located above the top surface of the mold assembly. The robotic arm 5 grips the preform and moves linearly back and forth along the conveying channel 6 so that the preform is conveyed into the mold assembly through the preform feeding channel 4. The robotic arm 5 can move back and forth above the mold assembly, which can effectively convey the preform and bottle, and can also not affect the blowing operation of the stretching assembly during resetting, thus improving processing efficiency.

[0032] In practice, the mold assembly can include multiple mold cavities for simultaneously blowing multiple preforms, thereby improving production efficiency. To this end, the number of mechanical grippers in each group is consistent with the number of mold cavities, and the mechanical grippers are distributed along the movement direction of the robotic arm 5. This ensures that the preforms can be synchronously transported to each mold cavity, and also ensures that the bottles within each mold cavity can be synchronously gripped and transported out.

[0033] In actual operation, the channel includes a bottle-picking channel 7, which is located between the swing ends of the moving template 2 away from the rotating shaft 14. Bottles processed within the mold assembly are conveyed outwards through the bottle-picking channel 7 under the drive of the robotic arm 5. The height of the bottle-picking channel 7 corresponds to the height of the swing end of the moving template 2, ensuring that the bottle can freely pass through the bottle-picking channel 7. The conveying channel 6 extends along the centerline above the bottle-picking channel 7, ensuring that the robotic arm 5 can grasp the bottle and remove it from the mold assembly.

[0034] In actual operation, the mold assembly includes a locking component disposed between the swing ends of the moving template 2. The locking component includes locking lugs 8 disposed on the swing ends of the moving template 2 and staggered from each other, and a liftable pin 9. Each locking lug 8 has a through hole. When the mold assembly is switched to the closed state, the locking lugs 8 are staggered and overlapped to align the through holes and be vertically locked by the pin 9. The swing ends of the moving template 2 can swing freely. When the moving templates 2 move towards each other and are ready to blow the bottle, the locking lugs 8 between the moving templates 2 are interlocked and overlapped and locked by the pin 9. The pin 9 is used to horizontally position the locking lugs 8 on each moving template 2 to ensure that the swing ends of the moving template 2 are firmly connected. The overlapping locking lugs 8 are also used to ensure that the swing ends of the moving template 2 remain at the same height, thereby ensuring that the moving templates 2 can be accurately closed and enclosed to form a mold cavity for blowing the bottle. By improving the accuracy of the mold cavity splicing, the quality of the bottle is improved.

[0035] In actual operation, the top of the connecting end of the moving template 2 is provided with a limiting component that avoids the channel. The limiting component includes a limiting post 10 on the moving template 2 and a limiting plate 11 that cooperates with the limiting post 10. The bottom surface of the limiting plate 11 has a downward-facing limiting groove 12. The limiting plate 11 is fitted onto the limiting post 10 through the limiting groove 12 and restricts the movement of the moving template 2. Since no limiting structure is provided at the top of the connecting end of the moving template 2 to avoid forming a channel, a limiting component is provided at the top of the connecting end of the moving template 2 to ensure the movement accuracy of the top of the connecting end of the moving template 2. The limiting component is set to avoid the channel, ensuring that the preform and the robotic arm 5 can pass through smoothly. The limiting component can guide and limit the top of the connecting end of the moving template 2. The limiting component has various structures, all of which can limit the top of the connecting end of the moving template 2, and all should be considered as specific embodiments of this utility model. The limiting component includes, but is not limited to, the following structures:

[0036] Structure 1: The limiting post 10 is disposed on the top of the moving template 2. The limiting groove 12 is arranged in an arc shape with the rotating shaft 14 as the center. The limiting post 10, which swings synchronously with the moving template 2, can slide along the arc path in the limiting groove 12 and abut against the groove wall of the limiting groove 12 when the mold assembly switches to the closed state, thereby restricting the moving template 2 from linearly separating in a direction perpendicular to the center line. The limiting post 10 is inserted into the limiting groove 12, which is arc-shaped and centered on the rotating shaft 14. This allows the moving template 2 to only swing along the arc path under the guidance of the limiting post 10, and not to move linearly along a linear path. This ensures that the moving template 2 can swing freely with the rotating shaft 14 as the center, and also ensures that the moving template 2 will not undergo linear backward displacement due to the external force on the blown bottle when it is closed, ensuring that the mold assembly is reliably maintained in the closed state.

[0037] Structure 2: The limiting post 10 is located on top of the moving template 2. The cross-sectional profile of the limiting groove 12 is the same as that of the limiting post 10. When the mold assembly switches to the closing state, the limiting plate 11 falls from the disengagement station to the limiting station, and the limiting groove 12 is vertically fitted onto the limiting post 10 to limit the swing of the moving template 2. The limiting plate 11 can move up and down, and the cross-sectional profile of the limiting groove 12 matches the cross-sectional profile of the limiting post 10. When the moving template 2 closes, the limiting post 10 is located below the limiting groove 12, and the limiting plate 11 descends to the limiting station and is fitted onto the limiting post 10 through the limiting groove 12, thus positioning the moving template 2 and ensuring that the moving template 2 will not undergo linear backward displacement due to the external force exerted on the blown bottle when closing, ensuring that the mold assembly is reliably maintained in the closed state.

[0038] In actual operation, the height of the limiting post 10 is increased to ensure that the limiting plate 11 is always located above the conveying channel 6 (e.g., Figure 5 As shown), this ensures that the limiting plate 11 will not interfere with the movement of the robotic arm 5. The limiting posts 10 are arranged one-to-one with the moving templates 2. The limiting posts 10 share a limiting plate 11, which simplifies the structure and improves the positioning effect of the moving templates 2, ensuring that the relative positions of the moving templates 2 are fixed.

[0039] In actual operation, the limiting post 10 is formed by extending upward from the top surface of the moving template 2, which has the advantages of simple structure and convenient production. In addition, the limiting post 10 can also be installed on the outer side wall of the moving template 2 away from the center line through the connecting block 13. By setting the connecting block 13 to increase the distance between the limiting posts 10, thereby ensuring that the width of the conveying channel 6 between the limiting posts 10 meets the movement requirements of the robotic arm 5, this should also be regarded as a specific embodiment of this utility model.

[0040] In addition, by increasing the width of the channel in the area between the connecting ends of the moving template to facilitate the transport of the bottle body, the bottle preform enters the mold assembly through the area between the swinging ends of the moving template 2, and the bottle body moves out of the mold assembly through the area between the connecting ends of the moving template 2, which can also achieve the purpose of improving processing efficiency and should also be regarded as a specific embodiment of this utility model.

Claims

1. A blow molding machine with a fan-shaped mold assembly, comprising a frame (1) and a mold assembly disposed on the frame (1), the mold assembly comprising two movable templates (2) that can be opened and closed symmetrically along a centerline, characterized in that, The lower part of the connecting end of the moving template (2) is connected by a transition component. When the mold assembly is switched to the open state, the connecting ends of the moving template (2) are separated from each other and form a channel.

2. A blow molding machine with a fan-shaped mold assembly according to claim 1, characterized in that, The adapter assembly includes connecting ears (3) located at the bottom of the connecting end of the moving template (2) and a rotating shaft (14) connected in series with the connecting ears (3). The moving template (2) can swing around the rotating shaft (14) and guide the mold assembly to switch between the open state and the closed state. When the mold assembly is switched to the open state, a channel for conveying the preform to the mold assembly is formed.

3. A blow molding machine with a fan-shaped mold assembly according to claim 2, characterized in that, The channel is arranged along the centerline of the mold assembly and includes a feeding channel (4) for horizontal movement of the preform. The feeding channel (4) is arranged between the top surface of the transfer assembly and the top surface of the mold assembly, and the width of the feeding channel (4) is greater than the diameter of the preform.

4. A blow molding machine with a fan-shaped mold assembly according to claim 3, characterized in that, The frame (1) is provided with a mechanical arm (5) for gripping bottle preforms. The channel includes a conveying channel (6) located above the top surface of the mold assembly. The mechanical arm (5) grips the bottle preforms and moves linearly back and forth along the conveying channel (6) so that the bottle preforms are conveyed into the mold assembly through the preform feeding channel (4). The mechanical arm (5) is provided with at least one mechanical claw. When there are two or more mechanical claws, the mechanical claws are distributed along the movement direction of the mechanical arm (5).

5. A blow molding machine with a fan-shaped mold assembly according to claim 4, characterized in that, The channel includes a bottle-taking channel (7), which is located between the swing ends of the moving template (2) away from the rotating shaft (14). The bottle body processed in the mold assembly is transported outward through the bottle-taking channel (7) under the drive of the robotic arm (5).

6. A blow molding machine with a fan-shaped mold assembly according to claim 1, characterized in that, The mold assembly includes a locking component disposed between the swing ends of the moving template (2). The locking component includes locking lugs (8) disposed on the swing ends of the moving template (2) and staggered from each other, and a liftable pin (9). Each locking lug (8) has a through hole. When the mold assembly is switched to the closed state, the locking lugs (8) are staggered and overlapped to align the through holes and be vertically locked by the pin (9).

7. A blow molding machine with a fan-shaped mold assembly according to any one of claims 1-6, characterized in that, The top of the connecting end of the moving template (2) is provided with a limiting component that avoids the channel. The limiting component includes a limiting post (10) set on the moving template (2) and a limiting plate (11) that cooperates with the limiting post (10). The bottom surface of the limiting plate (11) has a downward-facing limiting groove (12). The limiting plate (11) is fitted onto the limiting post (10) through the limiting groove (12) and restricts the movement of the moving template (2).

8. A blow molding machine with a fan-shaped mold assembly according to claim 7, characterized in that, The limiting post (10) is set on the top of the moving template (2). The limiting groove (12) is set in an arc shape with the rotating shaft (14) as the center. The limiting post (10) swings synchronously with the moving template (2) and can slide along the arc path in the limiting groove (12). When the mold assembly is switched to the closed state, it abuts against the groove wall of the limiting groove (12) to restrict the moving template (2) from linearly separating in a direction perpendicular to the center line.

9. A blow molding machine with a fan-shaped mold assembly according to claim 7, characterized in that, The limiting post (10) is set on the top of the moving template (2). The cross-sectional profile of the limiting groove (12) is the same as that of the limiting post (10). When the mold assembly is switched to the closing state, the limiting plate (11) falls from the detachment station to the limiting station, and the limiting groove (12) is vertically sleeved on the limiting post (10) to limit the swing of the moving template (2).

10. A blow molding machine with a fan-shaped mold assembly according to claim 7, characterized in that, The limiting post (10) is formed by extending upward from the top surface of the moving template (2); or, the limiting post (10) is installed on the outer side wall of the moving template (2) facing away from the center line through the connecting block (13); or, the limiting post (10) and the moving template (2) are arranged one-to-one, and the limiting post (10) shares a limiting plate (11).

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