Bottle preform distributing and conveying device of bottle blowing machine

Abstract

The utility model discloses a bottle blank distributing and conveying device of a bottle blowing machine, which is characterized in that a blank distributing vertical plate is fixedly mounted on a mounting bottom plate, a blank distributing track extending longitudinally is arranged on the blank distributing vertical plate, driving wheels are arranged at two ends of the blank distributing track, a driving chain is mounted on the blank distributing track and the driving wheels in a matched and rotary manner, and the driving wheels are driven to rotate by a rotary driving device; a plurality of blank distributing blocks are arranged on the driving chain, the blank distributing blocks synchronously rotate along with the driving chain, clamping notches are formed in the blank distributing blocks, a guide mounting frame is arranged on the mounting bottom plate, a conveying guide plate is arranged on the guide mounting frame, and conveying slide ways corresponding to the clamping notches are arranged on the conveying guide plate; a plugging structure for sealing or opening the clamping notch to prevent the bottle preform from falling off is further arranged on the mounting bottom plate, and a clamping preform feeding device for clamping the bottle preform at the clamping notch and turning over is further mounted on the mounting bottom plate in a lifting manner; the device can be used for automatically conveying and distributing bottle blanks, so that each bottle blank can be accurately clamped into the corresponding clamping notch, overturning blank feeding is completed, and blank distribution is accurate and reliable.

Description

Technical Field

[0001] This utility model relates to the field of bottle preform conveying technology for blow molding machines, and in particular to a bottle preform separating and conveying device for blow molding machines. Background Technology

[0002] When making hollow bottles, plastic blow molding machines are needed. During production, the automatic preform sorting mechanism automatically transports the preforms to the preform separating mechanism, and the preform loading mechanism then places the preforms from the preform separating mechanism onto the heated conveying mechanism, thus realizing the initial transport of the preforms.

[0003] Patent No. 202122410508.7 discloses a preform separating mechanism for a blow molding machine. This mechanism includes a conveying assembly with a slide rail for conveying preforms; a preform separating assembly that reciprocates laterally on one side of the conveying assembly; and a preform loading assembly on one side of the preform separating assembly. The preform separating assembly is positioned between the conveying assembly and the preform loading assembly, transporting the preforms from the conveying assembly to the preform loading assembly. The preform separating assembly has at least two preform separating grooves, and the preform loading assembly has at least two preform receiving grooves. When the slide rail communicates with the preform separating grooves, the preforms are transported from the conveying assembly to the preform separating assembly. When the preform separating tank is connected to the preform receiving tank, the preform is transported from the preform separating assembly to the preform loading assembly. In this operation, the conveying assembly continuously transports preforms to the preform separating assembly via a slide. The preform separating tank on the distribution assembly is used to receive and guide the preforms. However, the slide is fixed, and the preform separating assembly needs to move continuously in a straight line to distribute the transported preforms into the receiving tank. The preform separating efficiency is low. Furthermore, when a preform enters the preform separating tank, and the corresponding receiving tank has already received a preform, the preform separating tank moves to another receiving tank. Since the preform does not have the kinetic energy to actively enter the receiving tank, manual assistance is still required, increasing labor costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is: a preform separation and conveying device for blow molding machines. This device can automatically convey and separate preforms, so that each preform can be accurately inserted into the clamping notch and flipped for loading, making the preform separation accurate and reliable.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a preform separation and conveying device for a blow molding machine, comprising a mounting base plate, a vertical preform separation plate fixedly mounted on the mounting base plate, a preform separation track extending longitudinally on the preform separation plate, drive wheels at both ends of the preform separation track, a drive chain rotatingly mounted on the preform separation track and the drive wheels, the drive wheels being driven to rotate by a rotary drive device, a plurality of preform separation blocks on the drive chain, the preform separation blocks rotating synchronously with the drive chain, the preform separation blocks having a clamping notch for clamping the preform neck, a guide mounting frame on the mounting base plate, a conveying guide plate on the guide mounting frame, a conveying slide corresponding to the clamping notch on the conveying guide plate, a sealing structure on the mounting base plate for sealing or opening the clamping notch to prevent the preform from falling, and a clamping device for clamping and flipping the preform at the clamping notch mounted on the mounting base plate in a lifting manner.

[0006] As a preferred embodiment, the notch on the preform block is an arc-shaped groove adapted to the bottle mouth, a guide slope is provided on one side edge of the preform block at the notch, and an arc-shaped guide slide is provided on the conveying slide to cooperate with the guide slope.

[0007] As a preferred embodiment, the sealing structure includes a sealing mounting frame, on which a sealing mounting plate is provided. The sealing mounting plate is provided with a horizontally linearly movable sealing plate. The sealing plate is connected to the rear of the conveying guide plate. The sealing plate seals the clamping notches on multiple blank blocks. The sealing mounting plate is provided with an auxiliary guide structure connected to the sealing plate. The sealing plate is driven by a linear drive device.

[0008] As a preferred embodiment, the clamping and loading device includes a loading base, on which a loading lifting plate is mounted vertically. A rotating shaft is rotatably mounted on the loading lifting plate. The side of the rotating shaft closest to the preform block is the clamping station, and the other side of the rotating shaft is the loading station. The rotating shaft is driven by a loading rotation drive device. Multiple gripper seats are fixedly mounted on the rotating shaft, and each gripper seat is fixedly mounted with a gripper cylinder. The gripper cylinders reciprocate between the clamping station and the loading station. The preform block located at the clamping station is clamped one-to-one with the gripper cylinder. Bottle mouth claws corresponding to the bottle mouths of the preforms are fixedly mounted on the gripper cylinders.

[0009] As a preferred embodiment, the upper blank lifting plate is also provided with a buffer that buffers the movement when the gripper cylinder flips to the clamping position and the upper blank position, and the buffer corresponds to the gripper seat.

[0010] As a preferred embodiment, the upper blank lifting plate is also provided with an auxiliary guide structure connected to the upper blank base, and a lifting cylinder is fixedly installed on the upper blank base, with the piston rod of the lifting cylinder fixedly connected to the upper blank lifting plate.

[0011] As a preferred embodiment, the auxiliary guiding structure includes a guide rod and a guide sleeve. The guide rod is fixedly installed on the sealing plate and the upper blank lifting plate, respectively, and the guide sleeve is fixedly installed on the sealing mounting plate and the upper blank base, respectively.

[0012] As a preferred embodiment, the upper blank rotation drive device is a tilting cylinder, and a synchronizing rod is fixedly installed on the plurality of gripper cylinders to connect and fix the gripper cylinders to each other and extend longitudinally.

[0013] As a preferred embodiment, the sealing mounting bracket is provided with vertical strip holes, and the height of the sealing mounting plate is adjusted by raising and lowering the vertical strip holes.

[0014] After adopting the above technical solution, the effect of this utility model is as follows: The preform separating and conveying device for a blow molding machine includes a mounting base plate. A vertical preform separating plate is fixedly mounted on the mounting base plate. A longitudinally extending preform separating track is provided on the preform separating plate. Drive wheels are provided at both ends of the preform separating track. A drive chain is rotatably mounted on the preform separating track and the drive wheels. The drive wheels are driven to rotate by a rotary drive device. Several preform separating blocks are provided on the drive chain. The preform separating blocks rotate synchronously with the drive chain. Each preform separating block has a clamping notch for clamping the preform neck. A guide mounting frame is provided on the mounting base plate. A conveying guide plate is provided on the guide mounting frame. A conveying slide corresponding to the clamping notch is provided on the conveying guide plate. The mounting base plate also has a sealing structure to seal or open the clamping notch to prevent the preform from falling. The mounting base plate is also equipped with a clamping and loading device that clamps and flips the preforms at the clamping notch. First, the preforms are conveyed via the conveyor guide plate's conveyor slide. Simultaneously, a rotary drive device drives the drive wheel to rotate, causing the drive chain to rotate. The preform blocks are then conveyed through the conveyor slide, where the preforms are smoothly clamped into the clamping notch. A sealing structure blocks the corresponding clamping notch. Once multiple preform blocks have preforms clamped in each block, the rotary drive device stops, and the clamping and loading device clamps the preforms on the blocks. The sealing structure opens the clamping notch, allowing the preforms to be clamped and flipped. This process is repeated to complete the automatic conveying and loading of preforms. This device automatically conveys and loads preforms, ensuring that each preform is accurately clamped into the clamping notch and flipped for loading, making the preform distribution accurate and reliable.

[0015] Furthermore, since the notch on the preform block is an arc-shaped groove that fits the bottle mouth, and a guide slope is provided on one side edge of the preform block at the notch, and an arc-shaped guide slide is provided on the conveying slide that cooperates with the guide slope; the arc-shaped groove can fit the bottle mouth of the preform, and the guide slope can guide the preform, while the arc-shaped guide slide can also ensure accurate guidance in cooperation with the guide slope, so that the preform can be inserted more accurately and stably.

[0016] Furthermore, the sealing structure includes a sealing mounting frame, on which a sealing mounting plate is mounted. The sealing mounting plate has a horizontally linearly movable sealing plate connected to the rear of the conveying guide plate. The sealing plate seals the clamping notches on multiple preform blocks. The sealing mounting plate has an auxiliary guide structure connected to the sealing plate. The sealing plate is driven by a linear drive device. When the sealing plate extends via the linear drive device, it can cooperate with the rotating preform blocks, effectively and stably clamping the preforms within the clamping notches. The auxiliary guide structure ensures stable linear horizontal movement of the sealing plate. When clamping and flipping are required, the sealing plate can be retracted, making operation simple and the use stable and reliable.

[0017] Furthermore, the clamping and loading device includes a loading base, on which a loading lifting plate is mounted. A rotating shaft is rotatably mounted on the loading lifting plate. The side of the rotating shaft closest to the dividing block is the clamping station, and the other side is the loading station. The rotating shaft is driven by a loading rotation drive device. Multiple gripper seats are fixedly mounted on the rotating shaft, and each gripper seat is fixedly mounted with a gripper cylinder. The gripper cylinders reciprocate between the clamping station and the loading station. The preform-separating blocks at the clamping station are clamped one-to-one with the gripper cylinders. The gripper cylinders are fixedly equipped with bottle mouth claws corresponding to the bottle mouths of the preforms. The preform-lifting plate can drive the gripper cylinders to rise and fall to avoid the bottle mouths of the preforms transported when the preform-separating blocks rotate. When the preform-separating blocks stop rotating, the preform-lifting plate descends to the vicinity of the bottle mouth for easy clamping. The preform-lifting rotation drive device drives the rotating shaft to rotate, which causes the gripper seat to drive the gripper cylinders to reciprocate, thereby realizing preform loading. The drive is simple and reliable.

[0018] Furthermore, the preform lifting plate is also equipped with a buffer that buffers the preform when the gripper cylinder flips to the gripping position and the preform loading position. The buffer corresponds to the gripper seat. The buffer can reduce the impact received by the gripper cylinder when it flips, thereby protecting the gripped preform and improving the preform loading effect.

[0019] Furthermore, since the upper blank lifting plate is also provided with an auxiliary guide structure connected to the upper blank base, and a lifting cylinder is fixedly installed on the upper blank base, and the piston rod of the lifting cylinder is fixedly connected to the upper blank lifting plate; this ensures the lifting stability of the upper blank lifting plate on the upper blank base and guarantees the clamping effect.

[0020] Furthermore, since the auxiliary guiding structure includes guide rods and guide sleeves, with the guide rods fixedly installed on the sealing plate and the upper blank lifting plate respectively, and the guide sleeves fixedly installed on the sealing mounting plate and the upper blank base respectively, the sealing plate can be effectively supported and stabilized by the sealing mounting plate when it moves horizontally on the sealing mounting plate, and the upper blank lifting plate is similarly supported, thus improving the usage effect.

[0021] Furthermore, since the upper blank rotation drive device is a flipping cylinder, a synchronizing rod is fixedly installed on multiple gripper cylinders to connect and fix the gripper cylinders to each other and extend longitudinally; the flipping cylinder can ensure the stability of the drive angle, and the synchronizing rod can also ensure that multiple gripper cylinders can maintain synchronization when flipping, ensuring that the upper blank is stable and accurate.

[0022] Furthermore, since the sealing mounting bracket is provided with vertical strip holes, the height of the sealing plate can be adjusted by raising and lowering the sealing plate through the vertical strip holes; this facilitates adjustment of the sealing height of the sealing plate and provides better installation flexibility. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the clamping device for the upper blank in an embodiment of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the blanking block and the conveying guide plate in an embodiment of this utility model;

[0027] In the attached diagram: 1. Mounting base plate; 2. Separating plate; 3. Separating track; 4. Drive wheel; 5. Drive chain; 6. Separating block; 7. Clamping notch; 8. Guide mounting frame; 9. Conveying guide plate; 10. Conveying slide; 11. Guide ramp; 12. Arc-shaped guide slide; 13. Sealing mounting frame; 14. Sealing mounting plate; 15. Sealing plate; 16. Linear drive cylinder; 17. Upper blank base; 18. Upper blank lifting plate; 19. Rotating shaft; 20. Clamping station; 21. Upper blank station; 22. Clamping jaw seat; 23. Clamping jaw cylinder; 24. Buffer; 25. Lifting cylinder; 26. Guide rod; 27. Guide sleeve; 28. Tilting cylinder; 29. ​​Synchronizing rod; 30. Vertical strip hole. Detailed Implementation

[0028] The present invention will be further described in detail below through specific embodiments.

[0029] like Figures 1 to 3As shown, a preform separating and conveying device for a blow molding machine includes a mounting base plate 1. A vertical preform separating plate 2 is fixedly mounted on the mounting base plate 1. A preform separating track 3 extends longitudinally on the preform separating plate 2. Drive wheels 4 are provided at both ends of the preform separating track 3. A drive chain 5 is rotatably mounted on the preform separating track 3 and the drive wheels 4. The drive wheels 4 are driven to rotate by a rotary drive device. A plurality of preform separating blocks 6 are provided on the drive chain 5. The preform separating blocks 6 rotate synchronously with the drive chain 5. The preform separating blocks 6 are provided with a clamping notch 7 for clamping the preform neck. A guide mounting frame 8 is provided on the mounting base plate 1. A conveying guide plate 9 is provided on the guide mounting frame 8. A conveying slide 10 corresponding to the clamping notch 7 is provided on the conveying guide plate 9. The mounting base plate 1 is also provided with a sealing structure to seal or open the clamping notch 7 to prevent the preform from falling. The mounting base plate 1 is also equipped with a clamping and loading device that clamps and flips the preform at the clamping notch 7.

[0030] The rotary drive device includes a rotary drive motor, which is fixedly installed on the blank dividing plate 2 and corresponds to the drive wheel 4, so that the drive wheel 4 can rotate to form a rotary motion.

[0031] like Figure 3 As shown, the notch 7 on the preform block 6 is an arc-shaped groove adapted to the bottle mouth. A guide slope 11 is provided on one side edge of the notch 7 on the preform block 6. An arc-shaped guide slide 12 that cooperates with the guide slope 11 is provided on the conveying slide 10. Since the drive chain 5 can be effectively tensioned through the drive wheel 4 and the preform track 3, the preform block 6 installed on the drive chain 5 can be stably pulled and conveyed. Then, during the conveying, each arc-shaped groove can be inserted into the corresponding preform bottle mouth. The guide slope 11 can guide the preform. At the same time, the arc-shaped guide slide 12 can also ensure accurate guidance in cooperation with the guide slope 11, so that the preform can be inserted more accurately and stably. After the conveying guide plate 9 is installed on the guide mounting frame 8 by screws, it also extends and is fixed to the upper end of the preform standing plate 2, thereby further reinforcing and ensuring the stability of the preform when it is conveyed along the conveying slide 10.

[0032] like Figure 1As shown, the sealing structure includes a sealing mounting frame 13, a sealing mounting plate 14 on the sealing mounting frame 13, and a horizontally linearly movable sealing plate 15 on the sealing mounting plate 14. The sealing plate 15 is connected to the rear of the conveying guide plate 9. The sealing plate 15 seals the clamping notches 7 on multiple preform blocks 6. The sealing mounting plate 14 is provided with an auxiliary guide structure connected to the sealing plate 15. The sealing plate 15 is driven by a linear drive device; the linear drive device is a linear drive cylinder 16, which is fixedly installed on the sealing mounting plate 14. The piston rod passes through the sealing mounting plate 14 and connects to the sealing plate 15. When the sealing plate 15 is extended by the linear drive cylinder 16, it can cooperate with the rotating preform block 6, effectively and stably clamping the preform within the clamping notch 7. The auxiliary guide structure can ensure the stable linear horizontal movement of the sealing plate 15. When clamping and flipping are required, the sealing plate 15 can be retracted. The operation is simple and the use is stable and reliable.

[0033] like Figure 1 and Figure 2 As shown, the clamping device for the blank includes a blank base 17, on which a blank lifting plate 18 is mounted vertically. A rotating shaft 19 is rotatably mounted on the blank lifting plate 18. The side of the rotating shaft 19 closest to the blank-dividing block 6 is a clamping station 20, and the other side of the rotating shaft 19 is a blank-loading station 21. The rotating shaft 19 is driven by a blank-loading rotation drive device. Multiple gripper seats 22 are fixedly mounted on the rotating shaft 19, and each gripper seat 22 is fixedly mounted with a gripper cylinder 23. The gripper cylinder 23 reciprocates between the clamping station 20 and the blank-loading station 21. The blank-dividing block 6 located at the clamping station 20 is clamped one-to-one with the gripper cylinder 23. The gripper cylinder 23 is fixedly equipped with a bottle mouth gripper corresponding to the bottle preform mouth; the preform lifting plate 18 can drive the gripper cylinder 23 to rise and fall to avoid the bottle preform mouth conveyed by the preform dividing block 6 when it rotates. When the preform dividing block 6 stops rotating, the preform lifting plate 18 descends to the vicinity of the bottle preform mouth for easy clamping. The preform rotation drive device drives the rotating shaft 19 to rotate, so that the gripper seat 22 drives the gripper cylinder 23 to reciprocate, thereby realizing the preform loading. The drive is simple and reliable. The bottle mouth gripper is detachably installed on the gripper cylinder 23 by screws. Therefore, the corresponding bottle mouth gripper can be replaced for different bottle mouths to ensure stable clamping. The bottle mouth grippers are of different shapes, so they are not shown in the attached drawings.

[0034] Furthermore, the preform lifting plate 18 is also provided with a buffer 24 to buffer when the gripper cylinder 23 flips to the gripping station 20 and the preform loading station 21. The buffer 24 corresponds to the gripper seat 22. The buffer 24 can reduce the impact received when the gripping cylinder flips, thereby protecting the gripped preform and improving the preform loading effect. The buffer 24 is an existing structure on the market, so it will not be described in detail in the text.

[0035] In this embodiment, the upper blank lifting plate 18 is also provided with an auxiliary guide structure connected to the upper blank base 17. A lifting cylinder 25 is fixedly installed on the upper blank base 17, and the piston rod of the lifting cylinder 25 is fixedly connected to the upper blank lifting plate 18. This ensures the lifting stability of the upper blank lifting plate 18 on the upper blank base 17, guarantees the clamping effect, and allows the gripper cylinder 23 to rise and fall to avoid the bottle mouth, ensuring accurate blank loading.

[0036] Furthermore, the auxiliary guiding structure includes a guide rod 26 and a guide sleeve 27. The guide rod 26 is fixedly installed on the sealing plate 15 and the upper blank lifting plate 18, respectively, and the guide sleeve 27 is fixedly installed on the sealing mounting plate 14 and the upper blank base 17, respectively. In this way, the sealing plate 15 can be effectively supported and stabilized by the sealing mounting plate 14 when it moves horizontally on the sealing mounting plate 14, and the upper blank lifting plate 18 can move in the same way, thus improving the use effect.

[0037] In this embodiment, the upper blank rotation drive device is a flipping cylinder 28, and a synchronizing rod 29 is fixedly installed on the multiple gripper cylinders 23 to connect and fix the gripper cylinders 23 to each other and extend longitudinally; the flipping cylinder 28 can ensure the stability of the driving angle, and the synchronizing rod 29 can also ensure that the multiple gripper cylinders 23 can maintain synchronization when flipping, ensuring that the upper blank is stable and accurate.

[0038] The sealing mounting bracket 13 is provided with a vertical strip hole 30. The sealing mounting plate 14 can adjust the height of the sealing plate 15 by raising and lowering it through the vertical strip hole 30. This makes it easier to adjust the sealing height of the sealing plate 15 and provides better installation flexibility.

[0039] The working principle of this embodiment is as follows: First, the preforms are conveyed through the conveying slide 10 of the conveying guide plate 9. At the same time, the rotary drive motor drives the drive wheel 4 to rotate, which in turn drives the drive chain 5 to rotate. The preform blocks 6 are then conveyed through the conveying slide 10. In this way, the preforms conveyed by the conveying slide 10 are automatically inserted into the clamping notch 7. The lifting cylinder 25 drives the preform lifting plate 18 to rise, so that the gripper cylinder 23 avoids the bottle mouth of the preform. Then, the linear drive cylinder 16 drives the sealing plate 15 to block the corresponding clamping notch 7. After the preforms are inserted into multiple preform blocks 6, the rotary drive motor stops driving, the preform lifting plate 18 descends, and the gripper cylinder 23 drives the bottle mouth claw to clamp the bottle mouth on the corresponding preform block 6. The flipping cylinder 28 drives the rotating shaft 19 to rotate, which causes the gripper cylinder 23 to flip from the clamping station 20 to the preform loading station 21 to complete the preform loading. Then, the gripper cylinder 23 is flipped back to the clamping station 20 and the above operation is repeated to complete the automatic conveying and loading of preforms.

[0040] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and alterations to the technical solution of the present utility model without departing from its design spirit shall fall within the protection scope defined by the claims of the present utility model.

Claims

1. A preform separating and conveying device for a blow molding machine, comprising a mounting base plate, wherein a vertical preform separating plate is fixedly mounted on the mounting base plate, characterized in that: The preform separating plate is provided with a longitudinally extending preform separating track. The preform separating track is provided with drive wheels at both ends. The preform separating track and the drive wheels are equipped with a drive chain that rotates. The drive wheels are driven to rotate by a rotary drive device. The drive chain is provided with several preform separating blocks. The preform separating blocks rotate synchronously with the drive chain. The preform separating blocks are provided with a clamping notch for clamping the preform neck. The mounting base plate is provided with a guide mounting frame. The guide mounting frame is provided with a conveying guide plate. The conveying guide plate is provided with a conveying slide corresponding to the clamping notch. The mounting base plate is also provided with a sealing structure to seal or open the clamping notch to prevent the preform from falling. The mounting base plate is also equipped with a clamping device that clamps and flips the preform at the clamping notch.

2. The preform conveying device for a blow molding machine as described in claim 1, characterized in that: The notch on the preform block is an arc-shaped groove that fits the bottle mouth. A guide slope is provided on one side edge of the preform block at the notch. An arc-shaped guide slide is provided on the conveying slide that cooperates with the guide slope.

3. The preform conveying device for a blow molding machine as described in claim 2, characterized in that: The sealing structure includes a sealing mounting frame, on which a sealing mounting plate is provided. The sealing mounting plate is provided with a horizontally linearly movable sealing plate. The sealing plate is connected to the rear of the conveying guide plate. The sealing plate seals the clamping notches on multiple blank blocks. The sealing mounting plate is provided with an auxiliary guide structure connected to the sealing plate. The sealing plate is driven by a linear drive device.

4. The preform conveying device for a blow molding machine as described in claim 3, characterized in that: The clamping and loading device includes a loading base, on which a loading lifting plate is mounted. A rotating shaft is rotatably mounted on the loading lifting plate. The side of the rotating shaft closest to the preform block is the clamping station, and the other side of the rotating shaft is the loading station. The rotating shaft is driven by a loading rotation drive device. Multiple gripper seats are fixedly mounted on the rotating shaft. Each gripper seat is fixedly mounted with a gripper cylinder. The gripper cylinders reciprocate between the clamping station and the loading station. The preform block located at the clamping station is clamped one-to-one with the gripper cylinder. Bottle mouth claws corresponding to the bottle mouths of the preforms are fixedly mounted on the gripper cylinders.

5. The preform conveying device for a blow molding machine as described in claim 4, characterized in that: The upper blank lifting plate is also provided with a buffer that buffers the movement when the gripper cylinder flips to the clamping position and the upper blank position. The buffer corresponds to the gripper seat.

6. The preform conveying device for a blow molding machine as described in claim 5, characterized in that: The upper blank lifting plate is also provided with an auxiliary guide structure connected to the upper blank base. A lifting cylinder is fixedly installed on the upper blank base, and the piston rod of the lifting cylinder is fixedly connected to the upper blank lifting plate.

7. The preform conveying device for a blow molding machine as described in claim 6, characterized in that: The auxiliary guiding structure includes a guide rod and a guide sleeve. The guide rod is fixedly installed on the sealing plate and the upper blank lifting plate, respectively, and the guide sleeve is fixedly installed on the sealing mounting plate and the upper blank base, respectively.

8. The preform conveying device for a blow molding machine as described in claim 7, characterized in that: The upper blank rotation drive device is a flipping cylinder, and a synchronizing rod is fixedly installed on multiple gripper cylinders to connect and fix the gripper cylinders to each other and extend longitudinally.

9. The preform conveying device for a blow molding machine as described in claim 8, characterized in that: The sealing mounting frame is provided with vertical strip holes, and the height of the sealing mounting plate can be adjusted by raising and lowering the vertical strip holes.

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