A stable opening and closing sector mold mechanism and a bottle blowing machine

Abstract

This utility model relates to a fan-shaped mold mechanism and a blow molding machine with smooth opening and closing. Existing fan-shaped mold mechanisms have unstable opening and closing, affecting mold closing accuracy. This utility model includes a frame and a mold assembly mounted on the frame. The mold assembly includes a movable template that can open and close in a fan shape. Rollers are provided on the bottom surface of the swing end of the movable template. A flat support surface is provided on the top surface of the frame. The rollers roll along the support surface and support the movable template to open and close smoothly horizontally in a preset posture. Rollers that can overlap the support surface are provided at the bottom of the swing end of the movable template. These rollers support the weight of the movable template away from the rotating shaft end, thereby reducing the non-axial force on the rotating shaft. This protects the rotating shaft, preventing deformation, and effectively extends its service life, improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing, specifically to a fan-shaped mold mechanism and a blow molding machine. Background Technology

[0002] Existing blow molding machines include a frame and a heating mechanism, a conveying mechanism, a blow molding mechanism, and a mold mechanism mounted on the frame. The heating mechanism heats the preform, causing it to soften. The conveying mechanism transports the softened preform to the mold mechanism, where it is positioned within the mold cavity formed by the mold mechanism. The blow molding mechanism stretches and blows the preform within the mold cavity, shaping it into a bottle.

[0003] Existing mold assemblies use a fan-shaped opening and closing structure to simplify the design. This includes a fixed template and a moving template that can swing relative to each other along the fan shape. One end of the fixed template and the moving template are connected by a vertically placed pivot, while the other end can swing open and close. The moving template is relatively heavy and is supported and limited by the pivot at one end. This causes the moving template to exert a non-vertical force on the pivot, resulting in the pivot being twisted and deformed due to non-axial force. This not only prevents the moving template from accurately closing with the fixed template through swinging, affecting the normal opening and closing switching operation of the mold assembly, but also increases the lever arm length due to the large length of the moving template, which in turn increases the force on the pivot and aggravates the deformation of the pivot. This leads to a shortened service life of the mold mechanism and increases the cost of use and maintenance. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fan-shaped mold mechanism and blow molding machine with smooth opening and closing. Rollers that can overlap on the support surface are provided at the bottom of the swing end of the moving template. The rollers support the weight of the moving template away from the shaft end, thereby reducing the non-axial force on the shaft. This not only protects the shaft and prevents deformation, but also effectively extends the service life of the shaft and improves the user experience.

[0005] This utility model is achieved through the following method: a fan-shaped mold mechanism with smooth opening and closing, including a frame and a mold assembly mounted on the frame. The mold assembly includes a movable template that can open and close in a fan shape. The bottom surface of the swing end of the movable template is provided with rollers. The top surface of the frame is provided with a flat support surface. The rollers roll along the support surface and support the movable template to open and close smoothly horizontally in a preset posture. Rollers that can overlap the support surface are provided at the bottom of the swing end of the movable template. The rollers support the weight of the movable template away from the rotating shaft end, thereby reducing the non-axial force on the rotating shaft. This protects the rotating shaft, ensuring it always maintains a linear posture and preventing deformation. It also improves the accuracy of guiding the movable template to rotate and close with the fixed template, effectively extending the service life of the rotating shaft, reducing maintenance and operating costs, and improving the user experience.

[0006] Preferably, the roller is mounted on the bottom of the swing end wall of the moving template via a horizontally arranged axle. The bottom of the roller is exposed above the bottom surface of the moving template. The moving template overlaps the supporting surface via the roller, forming an anti-wear gap between the bottom surface of the moving template and the supporting surface. The roller is inserted into the bottom of the moving template via the axle and can roll along the supporting surface, ensuring that the roller swings synchronously with the moving template and continuously supports it. This ensures that the swing end of the moving template maintains a preset height and precisely closes with the fixed template, preventing damage to the frame and the bottom surface of the moving template due to friction. The roller overlapping the supporting surface causes the bottom surface of the moving template to be suspended above the supporting surface, forming an anti-wear gap.

[0007] Preferably, a connecting block is fixed to the bottom of the end wall of the swing end. A groove is provided on the outer wall of the connecting block, and a notch is provided at the bottom of the groove. The roller is inserted into the groove so that the bottom of the roller is exposed through the notch and contacts the supporting surface. The groove is used to accommodate the roller and includes an axially opened circular slot and a notch exposed on the bottom surface of the connecting block. The roller is inserted into the groove through the circular slot, so that the bottom of the roller is exposed downwards through the notch and can contact and fit against the supporting surface. This protects the roller and ensures that the roller can effectively contact the supporting surface, thereby effectively supporting the weight of the swing end of the moving template.

[0008] Preferably, the frame is equipped with a vertically oriented and rotatable shaft. The connecting end of the moving template is fitted onto the shaft via a perforated connecting lug. A pin is provided between the inner wall of the perforation and the outer wall of the corresponding section of the shaft. The moving template is driven by the shaft to achieve the opening and closing of the mold assembly. The shaft serves to connect the moving and fixed templates and also restricts the swing path of the moving template, ensuring that the moving template can reciprocate around the shaft axis and switch between opening and closing with the fixed template. It can also independently drive the moving template to reciprocate, ensuring relative swing between the moving and fixed templates. No pin is provided in the section where the shaft mates with the fixed template, allowing the shaft to rotate relative to the fixed template and drive the moving template to swing.

[0009] Preferably, the mold assembly includes a fixed template fixed to the frame. One end of the fixed template has a connecting seat, and a slot is formed in the middle of the side wall of the connecting seat. A connecting lug is horizontally inserted into the slot and connected by a rotating shaft. The movable template reciprocates around the rotating shaft and cooperates with the fixed template to achieve the opening and closing of the mold assembly. The fixed template is fixed to the frame, eliminating the need for a driving force, effectively simplifying the drive structure and reducing the space required for opening and closing the mold assembly, thus reducing the size of the mold mechanism and the space requirements of the workshop. The connecting lug is horizontally inserted into the slot and connected by a vertically placed rotating shaft. Alternatively, the mold assembly can also have two symmetrical movable templates, which swing mirror-image along a fan-shaped path to achieve opening and closing.

[0010] Preferably, the connecting seat has an opening for the vertical passage of the rotating shaft. The connecting lug is inserted into the connecting seat, with the opening and the through hole axially aligned, allowing the rotating shaft to pass vertically through the connecting seat and the connecting lug. A needle roller bearing is provided between the bottom wall of the slot and the bottom wall of the connecting lug for the rotating shaft to pass through, reducing the resistance encountered by the moving template during swinging. The coaxial alignment of the opening and the through hole facilitates the passage of the rotating shaft, ensuring a reliable connection between the moving template and the fixed template and allowing them to swing open and close relative to each other. The needle roller bearing is sleeved on the rotating shaft and clamped and fixed by the bottom wall of the connecting lug and the bottom wall of the slot. It not only supports the connecting lug and ensures that the connecting lug is tightly clamped by the slot, but also reduces the friction between the bottom wall of the connecting lug and the bottom wall of the slot, effectively reducing the impact of the weight of the moving template on the friction, thereby improving the swinging flexibility of the moving template.

[0011] Preferably, a motor is installed at the bottom of the frame, which is driven to rotate via a reduction gear set, so that the moving template can swing relative to the fixed template. The motor drives the rotating shaft to rotate via the reduction gear set, which can increase torque by reducing the rotational speed, thereby ensuring that the moving template can swing smoothly, and can also improve the opening and closing accuracy by reducing the swing angular velocity of the moving template.

[0012] Preferably, there are at least two connecting ears, which are vertically arranged along the swing end of the moving template. The corresponding end edge of the fixed template is provided with two connecting seats. The connecting ears are inserted into the corresponding connecting seats, which not only improves the connection reliability, but also limits the posture of the moving template, ensuring that the moving template can match and close with the fixed template through swinging.

[0013] Preferably, the mold assembly includes a locking assembly, which includes a fastening lug disposed on the swing end of the moving template and a locking seat disposed on the corresponding end of the fixed template. The locking seat has a fastening groove with a locking pin in the middle, and the fastening lug has a vertically penetrating fastening hole. The fastening lug is inserted into the fastening groove and locked by the locking pin inserted vertically into the fastening hole, so that the moving template and the fixed template are closed and locked. The fastening lug shell swings synchronously with the swing end of the moving template. When the moving template and the fixed template are closed, the fastening lug is inserted into the fastening groove and can be locked by the vertically moving locking pin, ensuring that the fixed template and the moving template are tightly closed.

[0014] Preferably, the bottom wall of the buckle groove is provided with a liftable locking pin, and the top wall of the buckle groove has a locking hole. The locking pin passes through the buckle hole from bottom to top and is inserted into the locking hole, so that both ends of the locking pin abut against the locking seat for limitation. The locking pin is liftably set at the bottom of the locking seat, and the top wall of the buckle groove has a locking hole. When the moving template swings to the position, the locking pin passes upward through the buckle hole and is inserted into the locking hole, so that both ends of the locking pin are connected to the locking seat, ensuring that the locking pin maintains a vertical axis posture. Then, the middle section of the locking pin is used to lock and position the buckle ear, improving the positioning reliability of the buckle ear.

[0015] Preferably, there are at least two locking components that are vertically separated, two locking seats that are located on the end edges of the fixed template, and two fastening ears that are located on the swinging end of the moving template. The locking reliability is improved by increasing the number of locking components.

[0016] Preferably, the bottom end of the locking pin is exposed on the bottom surface of the locking seat. A vertically positioned cylinder is located in the area below the locking assembly on the frame. The telescopic end of the cylinder is connected to the bottom end of the locking pin via a connector, allowing the locking pin to move up and down between a locking position (passing through the locking slot) and an unlocking position (disengaging from the locking slot) driven by the cylinder. The connector is C-shaped, allowing it to avoid the locking seat using its vertical portion while also driving the locking pins up and down via its end edge. The length of the locking pin is sufficient to ensure that both ends contact the locking seat after insertion.

[0017] Preferably, the groove edge and the end face edge of the fastening ear are provided with guide angles, which abut against each other and guide the fastening ear into the groove. The horizontal abutment between the guide angles is converted into a vertical force, ensuring that the swing end of the moving template can be raised to a preset height and drive the fastening ear into the groove.

[0018] A blow molding machine includes a heating mechanism, a conveying mechanism, a blow molding mechanism, and a mold mechanism. The conveying mechanism receives preforms from the heating mechanism and conveys them to the mold mechanism, so that the preforms are blown into bottle shapes by the blow molding mechanism. The mold mechanism receives the heated and softened preforms and completes the bottle blowing operation under the action of the blow molding mechanism.

[0019] The beneficial effects of this utility model are as follows: Rollers that can overlap the support surface are set at the bottom of the swing end of the moving template. The rollers support the weight of the moving template away from the shaft end, thereby reducing the non-axial force on the shaft. This not only protects the shaft and ensures that it always maintains a linear posture, preventing deformation of the shaft, but also improves the accuracy of guiding the moving template to rotate and close with the fixed template. Furthermore, it effectively extends the service life of the shaft, reduces maintenance and operating costs, and improves the user experience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the fan-shaped mold mechanism;

[0021] Figure 2 This is a structural diagram of the fan-shaped mold mechanism when the moving template is removed;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the moving template and the rotating shaft;

[0023] In the diagram: 1. Moving template, 2. Roller, 3. Frame, 4. Supporting surface, 5. Groove, 6. Notch, 7. Shaft, 8. Connecting ear, 9. Fixed template, 10. Connecting seat, 11. Needle roller bearing, 12. Motor, 13. Reduction gear set, 14. Snap-fit ​​ear, 15. Locking seat, 16. Locking pin, 17. Connecting piece, 18. Cylinder. Detailed Implementation

[0024] The essential features of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1:

[0026] This embodiment provides a mold mechanism.

[0027] like Figure 1 The illustrated fan-shaped mold mechanism with smooth opening and closing comprises a frame 3 and a mold assembly mounted on the frame 3. The mold assembly includes a movable template 1 that can open and close in a fan shape. Rollers 2 are provided on the bottom surface of the swing end of the movable template 1. A flat support surface 4 is provided on the top surface of the frame 3. The rollers 2 roll along the support surface 4 and support the movable template 1 to open and close smoothly horizontally in a preset posture. The rollers 2, which can overlap the support surface 4, are located at the bottom of the swing end of the movable template 1. These rollers support the weight of the movable template 1 away from the rotating shaft 7, thereby reducing the non-axial force on the rotating shaft 7. This protects the rotating shaft 7, ensuring it maintains a linear posture and preventing deformation. It also improves the accuracy of guiding the movable template 1 to rotate and close with the fixed template 9, effectively extending the service life of the rotating shaft 7, reducing maintenance and operating costs, and enhancing the user experience.

[0028] In this embodiment, the mold assembly includes a fixed template 9 and a movable template 1. The connecting end of the movable template 1 and the corresponding end of the fixed template 9 are connected by a connecting seat 10 and a connecting ear 8 connected in series by a rotating shaft 7, so that the movable template 1 can swing open and close with the axis of the rotating shaft 7 as the center. The roller 2 is installed at the bottom of the swing end of the movable template 1 through a wheel axle and overlaps on the support surface 4. In use, the movable template 1 swings back and forth under the drive of the rotating shaft 7. When the movable template 1 swings, the weight of the connecting end of the movable template 1 is borne by the needle roller bearing 11, and the weight of the swing end is transmitted to the support surface 4 through the roller 2, so that the connecting end and the swing end of the movable template 1 are both supported and positioned at a preset height, thereby ensuring that the movable template 1 can swing open and close along a fan-shaped path in a preset posture, preventing the movable template 1 from generating non-axial force on the rotating shaft 7 due to the suspension of the swing end, thus preventing the rotating shaft 7 from twisting and deforming, ensuring that the rotating shaft 7 maintains a linear posture and improving the accuracy of guiding the swing of the movable template 1, ensuring that the movable template 1 can accurately close with the fixed template 9. The roller 2 moves synchronously with the swing end of the moving template 1, ensuring that the roller 2 can always contact the support surface 4 without affecting the swing of the moving template 1, thus ensuring smooth opening and closing of the mold assembly.

[0029] In this embodiment, the roller 2 is mounted on the bottom of the swing end wall of the moving template 1 via a horizontally arranged axle. The bottom of the roller 2 is exposed on the bottom surface of the moving template 1. The moving template 1 overlaps the supporting surface 4 via the roller 2 to form an anti-wear gap between the bottom surface of the moving template 1 and the supporting surface 4. The roller 2 overlaps the supporting surface 4 and supports the swing end of the moving template 1, so that the bottom surface of the moving template 1 and the supporting surface 4 remain parallel and always have an anti-wear gap, preventing wear between the moving template 1 and the frame 3.

[0030] In this embodiment, a connecting block is fixed to the bottom of the end wall of the swing end. A groove 5 is provided on the outer wall of the connecting block, and a notch 6 is provided at the bottom of the groove 5. The roller 2 is inserted into the groove 5 so that the bottom of the roller 2 is exposed through the notch 6 and abuts against the support surface 4. The snap-fit ​​ear 14 located at the bottom of the swing end of the moving template 1 can form the connecting block, effectively simplifying the structure and facilitating assembly. The groove 5 is opened at the bottom of the connecting block and includes a horizontally exposed circular opening and a downwardly exposed notch 6. The inner wall of the groove 5 is provided with a mounting hole for inserting a wheel axle. The roller 2 is inserted into the groove 5 through the circular opening so that the bottom of the roller 2 is exposed through the notch 6 and can overlap the support surface 4.

[0031] In this embodiment, the frame 3 is provided with a vertically oriented and rotatable rotating shaft 7, and the connecting end of the moving template 1 is fitted onto the rotating shaft 7 through a connecting lug 8 with a through hole (e.g., Figure 3As shown, the connecting seat 10 has an opening for the vertical passage of the rotating shaft 7. The connecting ear 8 is inserted into the connecting seat 10, with the opening and the through hole axially aligned, so that the rotating shaft 7 vertically passes through the connecting seat and the connecting ear. One end of the fixed template 9 has a connecting seat 10. A slot is opened in the middle of the side wall of the connecting seat 10. The connecting ear 8 is horizontally inserted into the slot and is connected by the rotating shaft 7. The moving template 1 reciprocates around the rotating shaft 7 and cooperates with the fixed template 9 to realize the opening and closing of the mold assembly. During installation, the connecting ear 8 is inserted into the slot of the corresponding connecting seat 10, so that the through hole and the opening are coaxially aligned. The rotating shaft 7 vertically passes through the opening and the through hole and connects the connecting seat 10 and the connecting ear 8 in series, so that the fixed template 9 and the moving template 1 are reliably connected.

[0032] In this embodiment, a pin is provided between the inner wall of the perforation and the outer wall of the corresponding section of the rotating shaft 7. The moving template 1 is driven by the rotating shaft 7 to realize the opening and closing switching of the mold assembly. The section of the rotating shaft 7 inserted into the connecting ear 8 is provided with a pin, while the section of the rotating shaft 7 inserted into the connecting seat 10 is not provided with a pin. The pin is used to transmit force, and the rotating shaft 7 rotates and drives the moving template 1 to swing through the pin. It also ensures that the rotating shaft 7 can rotate relative to the connecting seat 10, preventing the connecting seat 10 from obstructing the rotation of the rotating shaft 7.

[0033] In this embodiment, a needle roller bearing 11 for the rotating shaft 7 to pass through is provided between the bottom wall of the slot and the bottom wall of the connecting ear 8 to reduce the resistance encountered by the moving template 1 when it swings. The needle roller bearing 11 is annular and has a very small thickness, which not only makes it easy to be placed between the bottom wall of the connecting ear 8 and the bottom wall of the slot, but also reduces the influence of the weight of the moving template 1 on its rotational resistance, ensuring that the moving template 1 can swing flexibly.

[0034] In this embodiment, a motor 12 is provided at the bottom of the frame 3. The motor 12 is driven to rotate by a reduction gear set 13 so that the moving template 1 can swing relative to the fixed template 9. There are at least two connecting ears 8, which are vertically placed along the swing end of the moving template 1. After the connecting ears 8 and the corresponding connecting seats 10 are inserted and installed in place, they are vertically inserted by a rotating shaft 7 to ensure that the relative positions between the connecting ears 8 are fixed and to improve the positioning reliability of the moving template 1.

[0035] In this embodiment, the mold assembly includes a locking assembly, which includes a latching lug 14 disposed on the swing end of the moving template 1 and a locking seat 15 disposed on the corresponding end of the fixed template 9. The locking seat 15 has a latching groove with a locking pin 16 in the middle. The latching lug 14 has a vertically penetrating latching hole. The latching lug 14 is inserted into the latching groove and locked by the locking pin 16 inserted vertically into the latching hole, so that the moving template 1 and the fixed template 9 are closed and locked. The latching lug 14 swings synchronously with the moving template 1. When the moving template 1 swings toward the fixed template 9 and closes smoothly, the latching lug 14 is horizontally inserted into the latching groove of the corresponding locking seat 15. At this time, the latching hole and the locking hole are coaxially aligned. The locking pin 16 is lifted upward by the cylinder 18 and inserted into the locking hole after passing through the latching hole, so as to prevent the swing end of the moving template 1 from disengaging from the fixed template 9, thereby ensuring that the mold assembly can enclose and form a mold cavity with a defined contour, and ensuring the quality of bottle blowing.

[0036] In this embodiment, the bottom wall of the buckle groove is provided with a liftable locking pin 16, and the top wall of the buckle groove is provided with a locking hole. The locking pin 16 passes through the locking hole from bottom to top and is inserted into the locking hole so that both ends of the locking pin 16 abut against the locking seat 15 for limitation. After locking, the two ends of the locking pin 16 are respectively inserted into the top and bottom walls of the buckle groove, which plays a positioning role for the locking pin 16 and ensures that the axis of the locking pin 16 remains vertical. The middle section of the locking pin 16 is inserted into the buckle hole of the fastening ear 14. The fastening ear 14 plays a locking and positioning role for the swing end of the moving template 1. The positioning reliability of the fastening ear 14 is improved by increasing the number of contact points between the lock and the locking seat 15.

[0037] In this embodiment, there are at least two locking components, which are vertically separated. By increasing the number of locking components, the positioning reliability of the swing end of the moving template 1 is improved, thereby ensuring that the mold cavity can withstand the pressure during the blowing of the bottle.

[0038] In this embodiment, the bottom end of the locking pin 16 is exposed on the bottom surface of the locking seat 15. A vertically positioned cylinder 18 is located in the area below the locking assembly on the frame 3. The telescopic end of the cylinder 18 is connected to the bottom end of the locking pin 16 via a connector 17, allowing the locking pin 16 to move up and down between a locking position (passing through the locking groove) and an unlocking position (disengaging from the locking groove) under the drive of the cylinder 18. The telescopic end of the cylinder 18 is used to drive the locking pin 16 to move up and down between the locking and unlocking positions. The connector 17 is U-shaped (e.g., ...). Figure 2 As shown), the telescopic end of the cylinder 18 is connected to the vertical part of the connector 17. This allows the retracted vertical part to avoid the connecting seat 10, and the two ends of the connector 17 can synchronously drive the locking pins 16 in the two sets of locking assemblies, thereby simplifying the structure by sharing the cylinder 18.

[0039] In this embodiment, the groove edge of the buckle and the end face edge of the buckle ear 14 are provided with guide angles. The corresponding guide angles abut against each other and guide the buckle ear 14 to be inserted into the buckle groove. When the swing end of the moving template 1 drops slightly, the bottom edge of the end face of the buckle ear 14 will abut horizontally against the bottom edge of the groove. By setting the guide angles, the horizontal abutment force is converted into a vertical force that drives the swing end of the moving template 1 to rise. This force is then used to counteract the weight of the swing end of the moving template 1 and allows the buckle ear 14 to be inserted horizontally into the buckle groove, ensuring that the mold assembly closes smoothly.

[0040] Example 2:

[0041] Compared to Embodiment 1, this embodiment provides a blow molding machine.

[0042] A blow molding machine comprises a heating mechanism, a conveying mechanism, a blow molding mechanism, and a mold mechanism. The conveying mechanism receives bottle preforms from the heating mechanism and conveys them to the mold mechanism so that the bottle preforms are blown into bottle bodies by the blow molding mechanism.

[0043] The structure and effect of the mold mechanism described in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

Claims

1. A fan-shaped mold mechanism with smooth opening and closing, comprising a frame (3) and a mold assembly disposed on the frame (3), the mold assembly comprising a movable template (1) capable of fan-shaped opening and closing, characterized in that, The bottom surface of the swing end of the moving template (1) is provided with a roller (2), and the top surface of the frame (3) is provided with a flat support surface (4). The roller (2) rolls along the support surface (4) and supports the moving template (1) to open and close smoothly in a preset posture.

2. A mechanism for opening and closing a stationary sector mold according to claim 1, wherein The roller (2) is installed at the bottom of the swing end wall of the moving template (1) through a horizontally set axle. The bottom of the roller (2) is exposed on the bottom surface of the moving template (1). The moving template (1) overlaps the supporting surface (4) through the roller (2) to form an anti-wear gap between the bottom surface of the moving template (1) and the supporting surface (4).

3. The mechanism according to claim 1, wherein A connecting block is fixed to the bottom of the end wall of the swing end. A groove (5) is provided on the outer side wall of the connecting block. A notch (6) is provided at the bottom of the groove (5). The roller (2) is embedded in the groove (5) so that the bottom of the roller (2) is exposed through the notch (6) and abuts against the support surface (4).

4. The mechanism according to claim 1, wherein The frame (3) is provided with a vertically oriented and rotatable rotating shaft (7). The connecting end of the moving template (1) is fitted onto the rotating shaft (7) through a connecting ear (8) with a perforation. A pin is provided between the inner wall of the perforation and the outer wall of the corresponding section of the rotating shaft (7). The moving template (1) is driven by the rotating shaft (7) to realize the opening and closing of the mold assembly.

5. A mechanism for opening and closing a stationary sector mold according to claim 4, wherein The mold assembly includes a fixed template (9) fixed on the frame (3). One end of the fixed template (9) is provided with a connecting seat (10). A slot is opened in the middle of the side wall of the connecting seat (10). The connecting ear (8) is inserted horizontally into the slot and is connected by a rotating shaft (7). The moving template (1) swings back and forth around the rotating shaft (7) and cooperates with the fixed template (9) to realize the opening and closing of the mold assembly.

6. A mechanism for opening and closing a stationary sector mold according to claim 5, wherein The connecting seat (10) is provided with an opening for the rotating shaft (7) to pass through vertically. The connecting ear (8) is inserted into the connecting seat (10), and the opening and the through hole are axially aligned so that the rotating shaft (7) passes through the connecting seat (10) and the connecting ear (8) vertically. A needle roller bearing (11) for the rotating shaft (7) to pass through is provided between the bottom wall of the slot and the bottom wall of the connecting ear (8) to reduce the resistance encountered by the moving template (1) when it swings.

7. A mechanism for opening and closing a stationary sector mold according to claim 5, wherein The bottom of the frame (3) is provided with a motor (12), which is driven to rotate by a reduction gear set (13) so that the moving template (1) can swing relative to the fixed template (9); or, the connecting ears (8) are at least two and are vertically placed along the swing end of the moving template (1).

8. The mechanism according to claim 5, wherein The mold assembly includes a locking assembly, which includes a snap-fit ​​ear (14) on the swing end of the moving template (1) and a locking seat (15) on the corresponding end of the fixed template (9). The locking seat (15) has a snap groove with a locking pin (16) in the middle. The snap-fit ​​ear (14) has a vertically penetrating snap hole. The snap-fit ​​ear (14) is inserted into the snap groove and locked by the locking pin (16) inserted vertically into the snap hole, so that the moving template (1) and the fixed template (9) are closed and locked.

9. A mechanism for opening and closing a stationary sector mold according to claim 8, wherein The bottom wall of the buckle groove is provided with a liftable locking pin (16), and the top wall of the buckle groove is provided with a locking hole. The locking pin (16) passes through the buckle hole from bottom to top and is inserted into the locking hole so that both ends of the locking pin (16) abut against the buckle seat (15) for limitation; or, the buckle assembly is at least two and is vertically separated; or, the bottom end of the locking pin (16) is exposed on the bottom surface of the buckle seat (15), and the frame (3) is provided with a vertically placed cylinder (18) in the area below the buckle assembly. The telescopic end of the cylinder (18) is connected to the bottom end of the locking pin (16) through a connector (17) so that the locking pin (16) can be switched between the locking position of passing through the buckle groove and the unlocking position of disengaging from the buckle groove under the drive of the cylinder (18); or, the edge of the buckle groove and the end face edge of the buckle ear (14) are provided with guide angles, and the corresponding guide angles abut against each other and guide the buckle ear (14) to be inserted into the buckle groove.

10. A bottle blowing machine, characterized by It includes a heating mechanism, a conveying mechanism, a blow molding mechanism, and a mold mechanism as described in any one of claims 1-9. The conveying mechanism receives the preform from the heating mechanism and conveys it into the mold mechanism so that the preform is blown into a bottle shape by the blow molding mechanism.

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