Bottle preform packing device

Abstract

The invention provides a bottle preform packing device, which belongs to the technical field of bottle preform processing equipment, and comprises a first belt conveyor, a second belt conveyor, a guide assembly, a multi-channel limiting frame, a lifting conveying mechanism and a posture adjusting mechanism, and the guide assembly, the multi-channel limiting frame and the posture adjusting mechanism are respectively fixed on a bracket of the first belt conveyor; the first belt conveyor conveys bottle blanks to the input end of the second belt conveyor, the lifting conveying mechanism is arranged below the output end of the second belt conveyor, the transfer box is placed on the lifting conveying mechanism, the posture adjusting mechanism can adjust the postures of the bottle blanks, and the lifting conveying mechanism can drive the transfer box to ascend and descend. The output end of the second belt conveyor is located in the transfer box, the second belt conveyor horizontally conveys the bottle preforms with the bottle openings facing the two sides into the transfer box, the bottle preforms are packed in order, disordered placement of the bottle preforms is avoided, the space of the transfer box is effectively utilized, and transfer of the bottle preforms is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of preform processing equipment, and particularly relates to a preform packing device. Background Art

[0002] In the production and packaging process of preforms, it is necessary to sort, convey and pack the injection-molded preforms for subsequent storage and transportation. The common preform packing method mainly uses a robot or a manipulator to grab multiple columns of preforms and transfer them to a conveyor belt, and then the conveyor belt transports the preforms into a transfer box or a packing box. Since the weights of the preform bottle mouth and the bottle bottom are different, the preforms will fall vertically into the box, making the preforms in the box disorderly and occupying a large space. In order to pack the preforms orderly, in the prior art, it is necessary to use a robot to adjust the posture of the preforms and then pack them through a packing unit.

[0003] For example, the patent with the publication number CN106347740A discloses a robot sorting and packing system for preforms. Multiple sorting robots are used to sort and adjust the posture of the preforms one by one. The efficiency of preform sorting and adjustment is low, the equipment cost is high, and after adjustment, it is still necessary for the packing unit to suck and pack multiple times, resulting in low packing efficiency. It cannot effectively adjust the orientation of the preform bottle mouth. In the case where the diameters of the preform bottle mouth and the bottle bottom are different, it is difficult to effectively utilize the space of the box. Summary of the Invention

[0004] The purpose of the present invention is to propose a preform packing device aiming at the deficiencies in the above technologies to solve the existing problems.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A preform packing device includes a first belt conveyor, a second belt conveyor, a guiding component, a multi-channel limiting frame, a lifting and conveying mechanism and a posture adjusting mechanism. The guiding component, the multi-channel limiting frame and the posture adjusting mechanism are respectively fixed on the bracket of the first belt conveyor. The guiding component guides the preforms. The multi-channel limiting frame is used to limit the positions of the preforms. The posture adjusting mechanism is used to adjust the postures of the preforms on the first belt conveyor. The first belt conveyor transports the preforms to the input end of the second belt conveyor. A lifting and conveying mechanism is arranged below the output end of the second belt conveyor, and a transfer box is placed on the lifting and conveying mechanism.

[0007] Preferably, the attitude adjustment mechanism includes a leftward attitude adjustment component, a rightward attitude adjustment component, and a driving mechanism. The leftward attitude adjustment component adjusts the preform to be horizontally placed on the first belt conveyor, and the mouth of the preform is adjusted to face right. The rightward attitude adjustment component adjusts the preform to be horizontally placed on the first belt conveyor, and the mouth of the preform is adjusted to face left. The driving mechanism meshes with the leftward attitude adjustment component and the rightward attitude adjustment component respectively, so that the leftward attitude adjustment component and the rightward attitude adjustment component alternately adjust the attitude of the preform.

[0008] Preferably, the leftward attitude adjustment component and the rightward attitude adjustment component respectively include a cylinder, a pull rod, a plurality of lifting toothed rods, a plurality of attitude adjustment rods, and a plurality of telescopic support rods. The plurality of lifting toothed rods are respectively slidably connected to the bracket of the first belt conveyor. The end of the lifting toothed rod is slidably connected with a support rod. The bracket of the first belt conveyor is connected with a fixed plate. One ends of the plurality of telescopic support rods are respectively slidably connected with the fixed plate. Both ends of the attitude adjustment rod are respectively connected with the corresponding support rod and the telescopic support rod. The output end of the cylinder is connected with the pull rod. The pull rod is slidably connected with the plurality of support rods. The driving mechanism meshes with the lifting toothed rods of the leftward attitude adjustment component and the rightward attitude adjustment component.

[0009] Preferably, a sliding seat is provided at the end of the lifting toothed rod, and the support rod is slidably connected with the sliding seat.

[0010] Preferably, a chute is provided on the support rod, and a plurality of sliders are provided on the pull rod. The sliders are slidably connected in the chute.

[0011] Preferably, the driving mechanism includes a motor, a screw rod, and a plurality of gear sets. The output shaft of the motor is connected with the screw rod. A plurality of first bevel gears are connected to the screw rod. The plurality of first bevel gears mesh with the corresponding gear sets.

[0012] Preferably, the gear set includes a second bevel gear, a connecting shaft, and two cylindrical gears. The second bevel gear and the two cylindrical gears are both connected to the connecting shaft. The second bevel gear meshes with the first bevel gear. The two cylindrical gears respectively mesh with the lifting toothed rods of the leftward attitude adjustment component and the rightward attitude adjustment component.

[0013] Preferably, a plurality of retaining bars are respectively connected to the belts of the first belt conveyor and the second belt conveyor. The plurality of retaining bars are arranged at equal intervals.

[0014] Preferably, the guiding assembly includes two connecting rods and a plurality of guiding plates. The two ends of the two connecting rods are respectively connected to the brackets of the first belt conveyor, and the plurality of guiding plates are respectively connected to the two connecting rods. A guiding channel is arranged between adjacent guiding plates.

[0015] Preferably, the lifting and conveying mechanism includes a lifting frame and a roller conveyor. The lifting frame is connected to the roller conveyor. The lifting frame is arranged below the second belt conveyor, and the roller conveyor is used for conveying transfer boxes.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] For a bottle preform packing device provided by the present invention, with the cooperation of the first belt conveyor and the multi-channel limiting frame, the posture adjusting mechanism can adjust the postures of multiple bottle preforms at one time, improving the efficiency of bottle preform posture adjustment, so that the bottle mouths of the bottle preforms are horizontally placed between adjacent two retaining bars on both sides of the first belt conveyor. The guiding assembly can continuously gather and approach the bottle preforms conveyed by the first belt conveyor, facilitating the conveying by the second belt conveyor. The lifting and conveying mechanism can drive the transfer box to lift, so that the output end of the second belt conveyor is located inside the transfer box. The second belt conveyor horizontally conveys the bottle preforms with bottle mouths facing both sides into the transfer box, and the bottle preforms are packed orderly, avoiding the messy placement of bottle preforms, effectively utilizing the space of the transfer box, and facilitating the transfer of bottle preforms. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of a bottle preform packing device of the present invention;

[0019] Figure 2 is a three-dimensional structural schematic diagram of a bottle preform packing device of the present invention;

[0020] Figure 3 is a connection structural schematic diagram of the first belt conveyor, the guiding assembly, the multi-channel limiting frame and the posture adjusting mechanism of the present invention;

[0021] Figure 4 is a connection structural schematic diagram of the multi-channel limiting frame and the posture adjusting mechanism of the present invention;

[0022] Figure 5 is Figure 4 an enlarged structural schematic diagram of local A in

[0023] Figure 6 is a connection structural schematic diagram of the second belt conveyor and the lifting and conveying mechanism of the present invention;

[0024] In the figure, 1 is the first belt conveyor; 2 is the second belt conveyor; 3 is the guiding component; 4 is the connecting rod; 5 is the guiding plate; 6 is the guiding channel; 7 is the multi-channel limiting frame; 8 is the lifting and conveying mechanism; 9 is the lifting frame; 10 is the roller conveyor; 11 is the attitude adjustment mechanism; 12 is the leftward attitude adjustment component; 13 is the rightward attitude adjustment component; 14 is the air cylinder; 15 is the pull rod; 16 is the lifting rack; 17 is the sliding seat; 18 is the attitude adjustment rod; 19 is the telescopic support rod; 20 is the support rod; 21 is the sliding groove; 22 is the fixing plate; 23 is the driving mechanism; 24 is the motor; 25 is the screw rod; 26 is the first bevel gear; 27 is the gear set; 28 is the second bevel gear; 29 is the connecting shaft; 30 is the cylindrical gear; 31 is the preform; 32 is the transfer box; 33 is the bracket; 34 is the stop bar; 35 is the fixing frame; 36 is the limiting bar. Detailed implementation mode

[0025] To better understand the technical content of the present invention, specific embodiments are provided below, and the present invention will be further described in conjunction with the accompanying drawings.

[0026] Embodiment 1

[0027] See Figures 1 to 6, a preform packing device provided by the present invention includes a first belt conveyor 1, a second belt conveyor 2, a guiding assembly 3, a multi-channel limiting frame 7, a lifting and conveying mechanism 8, and an attitude adjusting mechanism 11. The guiding assembly 3, the multi-channel limiting frame 7, and the attitude adjusting mechanism 11 are respectively fixed on the bracket 33 of the first belt conveyor 1. Among them, the multi-channel limiting frame 7 and the attitude adjusting mechanism 11 straddle the first belt conveyor 1 from above. The guiding assembly 3 guides the preforms 31 so that the preforms 31 are neatly arranged and conveyed to the input end of the second belt conveyor 2. The multi-channel limiting frame 7 is used to limit the position of the preforms 31. The attitude adjusting mechanism 11 is used to adjust the attitude of the preforms 31 on the first belt conveyor 1. A number of retaining bars 34 are respectively connected to the belts of the first belt conveyor 1 and the second belt conveyor. The number of the retaining bars 34 is arranged at equal intervals. The robot takes out multiple rows of preforms 31 from the injection molding machine and transfers them to be placed between two adjacent retaining bars 34 on the first belt conveyor. The multi-channel limiting frame 7 limits the preforms 31. The retaining bars 34 cooperate with the multi-channel limiting frame 7 to prevent the preforms 31 from tipping to both sides (that is, to prevent the preforms 31 from tipping to the side of the retaining bars 34). The multi-channel limiting frame 7 includes a fixed frame 35 and a number of limiting bars 36. The number of the limiting bars 36 is connected to the fixed frame 35. The fixed frame 35 is fixed on the first belt conveyor 1. The limiting bars 36 are parallel to the retaining bars 34. The first belt conveyor 1 conveys the preforms 31 to the input end of the second belt conveyor 2. A lifting and conveying mechanism 8 is arranged below the output end of the second belt conveyor 2. A transfer box 32 is placed on the lifting and conveying mechanism 8. The lifting and conveying mechanism 8 rises so that the output end of the second belt conveyor 2 is located inside the transfer box 32. The width of the output end of the second belt conveyor 2 is slightly smaller than the width of the transfer box 32, reducing the time for the preforms 31 to fall into the transfer box 32 and avoiding the situation of vertical dropping caused by uneven weights at both ends of the preforms 31. A number of horizontally placed preforms 31 conveyed at one time by the second belt conveyor 2 are loaded into the transfer box 32 in a straight line. The posture adjusting mechanism can make the mouths of a number of horizontally placed preforms 31 face both sides and be loaded into the transfer box 32, changing the gap between the preforms 31 caused by the different diameters of the mouths and bottoms of the preforms 31 and making full use of the space of the transfer box 32.

[0028] The posture adjustment mechanism 11 includes a leftward posture adjustment component 12, a rightward posture adjustment component 13, and a driving mechanism 23. The leftward posture adjustment component 12 adjusts the preform 31 to be horizontally placed on the first belt conveyor 1, and the mouth of the preform 31 is adjusted to face right. The leftward posture adjustment component 12 adjusts the preform 31 placed on the first belt conveyor 1 by the robot to the rightward posture adjustment component 13, and the preform 31 is horizontally placed on the first belt conveyor 1, and the mouth of the preform 31 is adjusted to face left. The driving mechanism 23 is respectively engaged with the leftward posture adjustment component 12 and the rightward posture adjustment component 13, so that the leftward posture adjustment component 12 and the rightward posture adjustment component 13 alternately adjust the posture of the preform 31.

[0029] The driving mechanism 23 is started, so that the leftward posture adjustment component 12 and the rightward posture adjustment component 13 move towards each other. When the leftward posture adjustment component 12 descends, the rightward posture adjustment component 13 ascends. When the leftward posture adjustment component 12 ascends, the rightward posture adjustment component 13 descends. When the leftward posture adjustment component 12 adjusts the posture of the preform 31, the leftward posture adjustment component 12 is lower than the mouth of the preform 31, and the rightward posture adjustment component 13 is higher than the bottom of the preform 31 (when the robot transfers multiple columns of preforms 31 to the first belt conveyor 1, the mouths of the preforms 31 are placed vertically downward). This avoids the restriction of the rightward posture adjustment component 13 on the preform 31. The leftward posture adjustment component 12 pushes the bottom of the preform 31 to the left, and the preform 31 tilts to the left. The mouth of the preform 31 is horizontally placed on the first belt conveyor 1 facing right, and the preform 31 is horizontally placed between two adjacent retaining bars 34.

[0030] The leftward attitude adjustment assembly 12 and the rightward attitude adjustment assembly 13 respectively include a cylinder 14, a pull rod 15, a plurality of lifting rack bars 16, a plurality of attitude adjustment rods 18 and a plurality of telescopic support rods 19. A plurality of the lifting rack bars 16 are respectively slidably connected to the bracket 33 of the first belt conveyor 1. The lifting rack bars 16 are vertically arranged on the bracket 33 of the first belt conveyor 1. The lifting of the lifting rack bars 16 can adjust the height of the attitude adjustment rods 18. The end of the lifting rack bar 16 is slidably connected with a support rod 20. Specifically, a sliding seat 17 is provided at the end of the lifting rack bar 16, and the support rod 20 is slidably connected with the sliding seat 17. The bracket 33 of the first belt conveyor 1 is connected with a fixed plate 22. One ends of a plurality of the telescopic support rods 19 are respectively slidably connected with the fixed plate 22. Both ends of the attitude adjustment rod 18 are respectively connected with the corresponding support rod 20 and the telescopic support rod 19. The support rod 20 slides on the sliding seat 17, which can drive the attitude adjustment rod 18 to move horizontally. The horizontal movement of the attitude adjustment rod 18 pushes the preform 31 to tilt. The horizontal movement of the attitude adjustment rod 18 of the leftward attitude adjustment assembly 12 can make the preform 31 tilt to the left, and the horizontal movement of the attitude adjustment rod 18 of the rightward attitude adjustment assembly 13 can make the preform 31 tilt to the right. The output end of the cylinder 14 is connected with the pull rod 15, and the pull rod 15 is slidably connected with a plurality of the support rods 20. Specifically, a chute 21 is provided on the support rod 20, and a plurality of sliders are provided on the pull rod 15. The sliders are slidably connected in the chute 21. The pull rod 15 can pull simultaneously to make a plurality of support rods 20 move horizontally. The pull rod 15 is slidably connected with a plurality of support rods 20 without hindering the lifting of the support rod 20 driven by the lifting rack bar 16. The driving mechanism 23 meshes with the lifting rack bars 16 of the leftward attitude adjustment assembly 12 and the rightward attitude adjustment assembly 13, so that the lifting rack bars 16 of the leftward attitude adjustment assembly 12 and the rightward attitude adjustment assembly 13 move towards each other.

[0031] The driving mechanism 23 includes a motor 24, a screw rod 25 and a number of gear sets 27. The output shaft of the motor 24 is connected to the screw rod 25. A number of first bevel gears 26 are connected to the screw rod 25. The number of first bevel gears 26 mesh with the corresponding gear sets 27. The gear sets 27 are simultaneously meshed with the lifting racks 16 of the left attitude adjustment assembly 12 and the right attitude adjustment assembly 13, so that the lifting racks 16 of the left attitude adjustment assembly 12 and the right attitude adjustment assembly 13 move towards each other. The gear set 27 includes a second bevel gear 28, a connecting shaft 29 and two cylindrical gears 30. The second bevel gear 28 and the two cylindrical gears 30 are both connected to the connecting shaft 29. The connecting shaft 29 is fixed to the bracket 33 of the first belt conveyor 1 through a bearing seat (not marked). The second bevel gear 28 meshes with the first bevel gear 26. The two cylindrical gears 30 are respectively meshed with the lifting racks 16 of the left attitude adjustment assembly 12 and the right attitude adjustment assembly 13.

[0032] The guiding assembly 3 includes two connecting rods 4 and a number of guiding plates 5. The two ends of the two connecting rods 4 are respectively connected to the bracket 33 of the first belt conveyor 1. The number of guiding plates 5 are respectively connected to the two connecting rods 4. A guiding channel 6 is provided between adjacent guiding plates 5. The diameters of the mouth and the bottom of the preform 31 are both larger than the height of the retaining bar 34. When the preform 31 is horizontally placed on the first belt conveyor 1, the preform 31 protrudes from the retaining bar 34. Under the action of the guiding plate 5, the preform 31 is restricted by the retaining bar 34 and laterally moves on the first belt conveyor 1. The preforms 31 conveyed on each guiding channel 6 get closer and closer, which is convenient for conveying to the second belt conveyor 2.

[0033] During use, the robot transfers the multi-row bottle preforms 31 formed by injection molding in the injection molding machine to the first belt conveyor 1. The bottle preforms 31 are placed vertically with their mouths facing downwards between two adjacent retaining bars 34. The multi-channel limiting frame 7 limits the upper part of the bottle preforms 31 to prevent the bottle preforms 31 from tipping towards the two retaining bars 34 on the left and right. When the rightward attitude adjustment assembly 13 adjusts the attitude of the bottle preforms 31, the motor 24 drives the screw 25 to rotate. The screw 25 drives several first bevel gears 26 to rotate. The first bevel gears 26 are engaged with the second bevel gears 28 of the corresponding gear sets 27. Two cylindrical gears 30 are respectively engaged with the lifting racks 16 of the leftward attitude adjustment assembly 12 and the rightward attitude adjustment assembly 13. The lifting rack 16, the support rod 20 and the attitude adjustment rod 18 of the rightward attitude adjustment assembly 13 descend. The attitude adjustment rod 18 of the rightward attitude adjustment assembly 13 is lower than the mouth of the bottle preform 31. The lifting rack 16, the support rod 20 and the attitude adjustment rod 18 of the leftward attitude adjustment assembly 12 ascend. The attitude adjustment rod 18 of the leftward attitude adjustment assembly 12 is higher than the bottom of the bottle preform 31 to avoid the restriction of the attitude adjustment rod 18 of the leftward attitude adjustment assembly 12 on the bottle preform 31. The cylinder 14 of the rightward attitude adjustment assembly 13 extends, driving the corresponding pull rod 15 to move horizontally to the right. The pull rod 15 is connected to the support rod 20. The support rod 20 is slidably connected to the sliding seat 17. Under the action of the pull rod 15, several attitude adjustment rods 18 of the rightward attitude adjustment assembly 13 move horizontally to the right. The attitude adjustment rod 18 of the rightward attitude adjustment assembly 13 pushes the bottom of the bottle preform 31 to the right. The bottle preform 31 tips to the right, and the mouth of the bottle preform 31 faces left and is horizontally placed on the first belt conveyor 1. And the bottle preform 31 is horizontally placed between two adjacent retaining bars 34. When the first belt conveyor 1 conveys the bottle preforms 31, under the action of the guide plate 5, the bottle preforms 31 are restricted by the retaining bars 34 and move horizontally on the bottle preforms 31 conveyed by the first belt conveyor 1. The bottle preforms 31 conveyed on each guide channel 6 get closer and closer, facilitating the conveyance to the second belt conveyor 2. The lifting and conveying mechanism 8 drives the transfer box 32 to move upward, so that the output end of the second belt conveyor 2 is located inside the transfer box 32. The second belt conveyor 2 horizontally conveys the bottle preforms 31 with their mouths facing both sides into the transfer box 32. As the bottle preforms 31 accumulate, the lifting and conveying mechanism 8 contracts and drives the transfer box 32 down one by one, continuously packing the bottle preforms 31, preventing the bottle blanks from being placed in a mess, effectively utilizing the space of the transfer box 32, and facilitating the transfer of the bottle preforms 31.

[0034] Embodiment 2

[0035] See Figure 1 、 2 and Figure 6, the difference between this embodiment and Embodiment 1 is that: the lifting and conveying mechanism 8 includes a lifting frame 9 and a roller conveyor 10. The lifting frame 9 is connected to the roller conveyor 10. The lifting frame 9 is arranged below the second belt conveyor 2. The roller conveyor 10 is used to convey the transfer box 32. The transfer box 32 is placed on the lifting frame 9. When packing the preforms 31, the lifting frame 9 drives the transfer box 32 to rise. After the transfer box finishes packing the preforms 31, the lifting frame 9 drives the transfer box 32 to move down to be parallel to the roller conveyor 10, which is convenient for the output of the transfer box 32 and the input of the empty transfer box 32.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preform packing device, characterized in that: It includes a first belt conveyor (1), a second belt conveyor (2), a guiding component (3), a multi-channel limiting frame (7), a lifting conveyor mechanism (8) and an attitude adjustment mechanism (11). The guiding component (3), the multi-channel limiting frame (7) and the attitude adjustment mechanism (11) are respectively fixed on the bracket (33) of the first belt conveyor (1). The guiding component (3) guides the preforms (31), the multi-channel limiting frame (7) is used to limit the position of the preforms (31), and the attitude adjustment mechanism (11) is used to adjust the attitude of the preforms (31) on the first belt conveyor (1). The first belt conveyor (1) conveys the preforms (31) to the input end of the second belt conveyor (2), and a lifting conveyor mechanism (8) is arranged below the output end of the second belt conveyor (2), and a transfer box (32) is placed on the lifting conveyor mechanism (8).

2. The bottle preform packing device according to claim 1, wherein: The attitude adjustment mechanism (11) includes a leftward attitude adjustment component (12), a rightward attitude adjustment component (13) and a driving mechanism (23). The leftward attitude adjustment component (12) adjusts the preform (31) to be horizontally placed on the first belt conveyor (1), and the mouth of the preform (31) is adjusted to face right. The rightward attitude adjustment component (13) adjusts the preform (31) to be horizontally placed on the first belt conveyor (1), and the mouth of the preform (31) is adjusted to face left. The driving mechanism (23) is respectively engaged with the leftward attitude adjustment component (12) and the rightward attitude adjustment component (13) to enable the leftward attitude adjustment component (12) and the rightward attitude adjustment component (13) to alternately adjust the attitude of the preform (31).

3. The bottle preform packing device according to claim 2, characterized in that: The leftward attitude adjustment component (12) and the rightward attitude adjustment component (13) respectively include a cylinder (14), a pull rod (15), a plurality of lifting toothed rods (16), a plurality of attitude adjustment rods (18) and a plurality of telescopic support rods (19). The plurality of lifting toothed rods (16) are respectively slidably connected to the bracket (33) of the first belt conveyor (1). The end of the lifting toothed rod (16) is slidably connected with a support rod (20). The bracket (33) of the first belt conveyor (1) is connected with a fixed plate (22). One ends of the plurality of telescopic support rods (19) are respectively slidably connected to the fixed plate (22). The two ends of the attitude adjustment rod (18) are respectively connected to the corresponding support rod (20) and the telescopic support rod (19). The output end of the cylinder (14) is connected with the pull rod (15). The pull rod (15) is slidably connected with the plurality of support rods (20). The driving mechanism (23) is engaged with the lifting toothed rods (16) of the leftward attitude adjustment component (12) and the rightward attitude adjustment component (13).

4. A preform packing device as claimed in claim 3, wherein: A sliding seat (17) is arranged at the end of the lifting toothed rod (16), and the support rod (20) is slidably connected with the sliding seat (17).

5. The bottle preform packing device according to claim 3, characterized in that: A chute (21) is arranged on the support rod (20), and a plurality of sliders are arranged on the pull rod (15), and the sliders are slidably connected in the chute (21).

6. The bottle preform packing device according to claim 1, characterized in that: The driving mechanism (23) includes a motor (24), a screw rod (25) and a number of gear sets (27). The output shaft of the motor (24) is connected to the screw rod (25). A number of first bevel gears (26) are connected to the screw rod (25), and the number of first bevel gears (26) mesh with the corresponding gear sets (27).

7. The bottle preform packing device according to claim 6, characterized in that: The gear set (27) includes a second bevel gear (28), a connecting shaft (29) and two cylindrical gears (30). The second bevel gear (28) and the two cylindrical gears (30) are both connected to the connecting shaft (29). The second bevel gear (28) meshes with the first bevel gear (26), and the two cylindrical gears (30) respectively mesh with the lifting racks (16) of the left attitude adjustment assembly (12) and the right attitude adjustment assembly (13).

8. The bottle preform packing device according to claim 1, wherein: A number of retaining bars (34) are respectively connected to the belts of the first belt conveyor (1) and the second belt conveyor. The number of retaining bars (34) are arranged at equal intervals.

9. The bottle preform packing device according to claim 1, characterized in that: The guiding assembly (3) includes two connecting rods (4) and a number of guiding plates (5). The two ends of the two connecting rods (4) are respectively connected to the brackets (33) of the first belt conveyor (1). The number of guiding plates (5) are respectively connected to the two connecting rods (4), and a guiding channel (6) is arranged between adjacent guiding plates (5).

10. A preform packing device according to claim 1, characterized in that: The lifting and conveying mechanism (8) includes a lifting frame (9) and a roller conveyor (10). The lifting frame (9) is connected to the roller conveyor (10). The lifting frame (9) is arranged below the second belt conveyor (2), and the roller conveyor (10) is used for conveying the transfer box (32).

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