Chain channel assembly for bottle blowing machine capable of discharging two bottles at one time

Abstract

A chain way assembly for a one-out-two bottle blowing machine comprises a track and a bottle blank base connected to the track in a sliding mode, the track is in an inverted T shape and comprises a longitudinal single track, a longitudinal double track, a second transverse track, a second pitch changing mechanism, a mold closing track, a first transverse track and a first pitch changing mechanism, and the longitudinal single track, the longitudinal double tracks, the second transverse track, the second pitch changing mechanism, the mold closing track, the first transverse track and the first pitch changing mechanism are sequentially connected end to end. And the longitudinal double-track is a bidirectional turn-back track for heating bottle blanks, one end of the longitudinal double-track is connected with the tail part of the longitudinal single-track, and the other end of the longitudinal double-track is connected with the head part of the second transverse track. According to the device, the loss of heat energy can be greatly reduced, and the heat efficiency is improved. The bottle blowing machine is simple in structure, convenient to operate, capable of achieving heating of bottle blanks of different specifications on the machine and die assembly stretching bottle blowing work, capable of better preventing the bottle interference phenomenon after die assembly, capable of greatly increasing the application range of the bottle blowing machine, capable of further reducing heat energy loss and capable of improving heat efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of blow molding machine structure, and in particular relates to a chain conveyor assembly for a one-out-two blow molding machine. Background Technology

[0002] Most existing blow molding machines use a plastic chain pusher mechanism with a rectangular chain track and a standard heating lamp box. The lamps are arranged on one side of the preform, resulting in high energy consumption, a limited number of heating positions, and uneven heating of the preform. They also occupy a large area. Therefore, new, high-efficiency blow molding machines have emerged on the market, such as the Chinese utility model patent CN202221694183.8, which specifically discloses a frame, chain track mechanism, preform loading mechanism, reversing stepping mechanism, lamp box heating mechanism, mold closing and stretching mechanism, hand-operated pitch-changing mechanism, and bottle unloading stepping mechanism. This utility model, by setting the chain track as a "b"-shaped mechanism with its vertical section as a reversing mechanism, and placing the curved arm of the mold-closing and stretching device above the arc-shaped mechanism of the "b"-shaped chain track, ensures that the length direction of the mold-closing and stretching mechanism is consistent with the vertical direction, thus greatly reducing the overall machine footprint. Furthermore, this utility model, through the aforementioned chain track mechanism, enables a single row of lamps to simultaneously heat both sides of the preform, reducing the number and power of the heating lamps and heat loss, significantly improving the thermal efficiency of the lamp heating and achieving high efficiency and energy saving. However, the blow molding machine described in that patent is a one-out-one model, meaning only one preform can be blown each time the mold is opened and closed, greatly reducing the blow molding machine's output. Compared to this one-out-two model patent, it is not suitable for market promotion.

[0003] Therefore, how to provide a chain conveyor assembly for a one-outlet two-stage blow molding machine that not only greatly reduces heat loss and improves thermal efficiency, but also enables free variation of preform spacing is one of the technical problems that urgently need to be solved in this field. Utility Model Content

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] A chain conveyor assembly for a one-out-two blow molding machine includes a track and a preform holder slidably connected to the track. The track is convex in shape and includes a longitudinal single track, a longitudinal double track, a second transverse track, a second pitch-changing mechanism, a mold closing track, a first transverse track, and a first pitch-changing mechanism connected end to end thereto. The longitudinal double track is a bidirectional reversible track used for preform heating, with one end connected to the tail of the longitudinal single track and the other end connected to the head of the second transverse track.

[0006] The second transverse track is provided with a second pitch mechanism in the middle, thereby dividing the longitudinal single track of the second transverse track into a transverse double track with gaps; the first transverse track is provided with a first pitch mechanism in the middle, thereby dividing the longitudinal single track of the first transverse track into a transverse double track with gaps.

[0007] The first pitch-changing mechanism is an integral mechanism with a rectangular lower cross section and a triangular upper cross section;

[0008] The second pitch mechanism is an integral mechanism with a rectangular lower cross section and a triangular upper cross section; and the lower length of the second pitch mechanism is less than the lower length of the first pitch mechanism.

[0009] Preferably, a blank-loading mechanism mounting position is provided at the middle position of the longitudinal single track for installing the blank-loading mechanism of the blow molding machine; and a blank-pushing mechanism is fixedly provided on the side where the tail of the first transverse track connects to the head of the longitudinal single track.

[0010] Preferably, a steering mechanism is fixedly connected to the longitudinal double-track turning position; a pushing mechanism is fixedly provided on the outer side of the steering mechanism.

[0011] Preferably, the pushing mechanism includes a pushing block, a pushing motor, a first rack, a fixed base, a gear, a first connecting plate, and a third sliding guide rail; the fixed base is fixed to the blow molding machine frame, and its upper end is provided with the third sliding guide rail; the pushing motor is fixedly connected to the fixed base, and its output end extends out of the fixed base and is connected to the gear for transmission; the lower end of the pushing block is slidably connected to the upper end of the fixed base through the third sliding guide rail, and the end of the pushing block away from the pushing motor is fixedly connected to the upper end of the first connecting plate; the lower end of the first connecting plate is fixedly connected to the upper end of the first rack; the lower end of the first rack is meshed with the gear.

[0012] Preferably, a second transverse stepping mechanism is provided below the second transverse track to push the preform holder laterally from the tail end of the longitudinal double track into the second transverse track, thereby increasing the distance between two adjacent preform holders through the variable pitch of the second transverse track.

[0013] A first transverse stepping mechanism is provided below the first transverse track to push the preform holder from the tail end of the mold closing track into the first transverse track, thereby reducing the distance between two adjacent preform holders.

[0014] Preferably, the distance between two adjacent preform holders on the mold closing track after they leave the tail of the second transverse track and before they enter the first transverse track is equal to the mold cavity spacing.

[0015] The distance between two adjacent preform holders after entering the head of the longitudinal single track and before leaving the longitudinal double track is equal to the outer diameter of the bearing of the preform holder.

[0016] Preferably, the steering mechanism includes a turntable for turning the preform holder at the longitudinal double-track reversal section;

[0017] It also includes a servo motor reducer, a support base, a third reducer base, several columns, a second connecting plate, a billet rotation track, and a billet seat; the servo motor reducer is disposed under the third reducer base and its output part extends out of the third reducer base; the support base is fixedly disposed under the third reducer base and thus fixedly connected to the machine frame table; the upper surface of the third reducer base is fixedly connected to the lower surface of the billet rotation track through several columns; the output end of the servo motor reducer is connected to the turntable through the second connecting plate; the billet seat is placed in the track of the turntable.

[0018] Preferably, the mold closing track is provided with a bottle lowering mechanism mounting position near the outer side of the first transverse track, for fixing and installing the bottle lowering mechanism.

[0019] Preferably, the first lateral stepping mechanism includes a first fixed plate, a pusher, a first sliding guide rail, a servo motor, a reducer, a first gear, a second rack, a bolt roller, and a first reducer base; the servo motor and the reducer are disposed through one side of the first fixed plate, with their output ends extending out of the first fixed plate and fixedly connected to the first gear; two first sliding guide rails are provided on the other side surface of the first fixed plate, and the pusher is slidably connected to the upper part of the first fixed plate via the first sliding guide rails; the second rack is disposed between the two first sliding guide rails, with one end of the second rack fixedly connected to the lower end of the pusher and the other end meshing with the first gear; the upper end of the servo motor is drivenly connected to the reducer, and the reducer is fixedly connected to the lower surface of the first fixed plate; the bolt roller is fixedly disposed on the upper surface of the first fixed plate and is arranged corresponding to the first gear to prevent the second rack from shifting.

[0020] Preferably, the longitudinal double track is the heating area of ​​the light box.

[0021] The advantages of this utility model compared to the prior art are as follows:

[0022] The aforementioned device of this invention enables the preform to move within a convex chain track along with the preform holder. At the light box, the distance of the return chain track is relatively short, employing a mechanism with a row of heating lamps arranged in the middle. Simultaneously, the preform spacing also adopts a small-pitch structure. Compared to a structure with heating lamps arranged on both sides of the chain track, this significantly reduces heat loss and improves thermal efficiency. After the preform slides out of the light box with the preform holder, the variable-pitch mechanism of the chain track increases the distance between adjacent preform holders to the large distance required by the mold-closing mechanism, satisfying the larger spacing after preform stretching and forming. The formed bottle separates from the preform holder at the lower bottle location, and the separated preform holders are then restored to the small spacing at the light box via the variable-pitch mechanism. This allows for the heating, mold-closing, stretching, and blow molding of preforms of different specifications on this machine, and better prevents bottle interference after mold closing, greatly increasing the application range of the blow molding machine and further reducing heat loss and improving thermal efficiency. Attached Figure Description

[0023] Figure 1 A schematic diagram of the chain conveyor assembly for a one-outlet two-stage blow molding machine provided by this utility model;

[0024] Figure 2 This utility model Figure 1 Enlarged diagram of A in the middle;

[0025] Figure 3 This utility model Figure 1 Enlarged diagram of B in the middle;

[0026] Figure 4 This utility model Figure 1 Enlarged diagram of C in the middle;

[0027] Figure 5 This utility model Figure 1 Second transverse stepping mechanism structure diagram

[0028] Figure 6 This utility model Figure 1 structural diagram of the first transverse stepping mechanism

[0029] Figure 7 This utility model Figure 1 Structural diagram of the longitudinal double-track steering mechanism

[0030] Among them, 1. First transverse track; 101. First pitch-changing mechanism; 102. First transverse stepping mechanism; 1021. First fixed plate; 1022. Push seat; 1023. First sliding guide rail; 1024. Servo motor; 1025. Reducer; 1026. Gear; 1027. Second rack; 1028. Bolt roller; 1029. First reducer base; 2. Bottle lowering mechanism mounting position; 3. Billet pushing mechanism; 301. Billet pushing block; 302. Billet pushing motor; 303. First rack; 304. Fixed seat; 305. Gear; 306. First connecting plate; 307. Third sliding guide rail; 4. Longitudinal single track; 401. Billet loading mechanism mounting position; 5. Second transverse track; 501. 6. Second pitch-changing mechanism; 7. Mold closing track; 8. Second transverse stepping mechanism; 9. Second fixed plate; 10. Second sliding guide rail; 11. Second reducer base; 12. Guide rail; 13. Connecting seat; 14. Servo motor reducer; 15. First bearing seat; 16. Coupling; 17. Ball screw; 18. Slide; 19. Bearing; 20. Second bearing seat; 21. Bearing cap; 32. Steering mechanism; 43. Servo motor reducer; 54. Support seat; 65. Third reducer base; 76. Column; 87. Second connecting plate; 88. Turntable; 98. Billet track; 19. Billet seat; 10. Bottle preform; 11. Longitudinal double track. Detailed Implementation

[0031] Example 1

[0032] See appendix Figure 1-4 The illustrated chain conveyor assembly for a one-outlet two-stage blow molding machine includes a track and a preform holder slidably connected to the track. The track is convex in shape and includes a longitudinal single track 4, a longitudinal double track 9, a second transverse track 5, a second pitch-changing mechanism 501, a mold-closing track 6, a first transverse track 1, and a first pitch-changing mechanism 101 connected end-to-end. The longitudinal double track 9 is a bidirectional reversing track used for preform heating, with one end connected to the tail of the longitudinal single track 4 and the other end connected to the head of the second transverse track 5. The second pitch-changing mechanism 501 is located in the middle of the second transverse track 5. 1. Thus, the longitudinal single track of the second transverse track 5 is divided into a transverse double track with gaps; the first transverse track 1 is provided with a first pitch mechanism 101 in the middle, thus dividing the longitudinal single track of the first transverse track 1 into a transverse double track with gaps; the first pitch mechanism 101 is an integral mechanism with a rectangular lower cross section and a triangular upper cross section; the second pitch mechanism 501 is an integral mechanism with a rectangular lower cross section and a triangular upper cross section; and the lower length of the second pitch mechanism 501 is less than the lower length of the first pitch mechanism 101.

[0033] As a preferred or optional embodiment, a blank loading mechanism mounting position 2 is provided in the middle of the longitudinal single track 4 for installing the blank loading mechanism of the blow molding machine; and a blank pushing mechanism 3 is fixedly provided on the side where the tail of the first transverse track 1 is connected to the head of the longitudinal single track 4.

[0034] As a preferred or optional embodiment, a steering mechanism 8 is fixedly connected to the longitudinal double track 9 at the turning position; a pushing mechanism 3 is fixedly provided on the outside of the steering mechanism 8.

[0035] As a preferred or optional embodiment, the billet pushing mechanism 3 includes a billet pushing block 301, a billet pushing motor 302, a first rack 303, a fixed seat 304, a gear 305, a first connecting plate 306, and a third sliding guide rail 307. The fixed seat 304 is fixed to the blow molding machine frame, and its upper end is provided with the third sliding guide rail 307. The billet pushing motor 302 is fixedly connected to the fixed seat 304, and its output end extends out of the fixed seat 304 and is connected to the gear 305 for transmission. The lower end of the billet pushing block 301 is slidably connected to the upper end of the fixed seat 304 through the third sliding guide rail 307, and the end of the billet pushing block 301 away from the billet pushing motor 302 is fixedly connected to the upper end of the first connecting plate 306. The lower end of the first connecting plate 306 is fixedly connected to the upper end of the first rack 303. The lower end of the first rack 303 is meshed with the gear 305.

[0036] As a preferred or optional embodiment, a second transverse stepping mechanism 7 is provided below the second transverse track 5 to push the preform seat laterally from the tail end of the longitudinal double track 9 into the second transverse track 5, thereby increasing the distance between two adjacent preform seats through the pitch change of the second transverse track; a first transverse stepping mechanism 102 is provided below the first transverse track 1 to push the preform seat from the tail end of the mold closing track 6 into the first transverse track 1, thereby decreasing the distance between two adjacent preform seats.

[0037] As a preferred or optional embodiment, the distance between two adjacent preform holders after leaving the tail of the second transverse track 5 and before entering the first transverse track 1, i.e., on the mold closing track 6, is equal to the mold cavity spacing; the distance between two adjacent preform holders after entering the head of the longitudinal single track 4 and before leaving the longitudinal double track 9 is equal to the bearing outer diameter of the preform holder.

[0038] As a preferred or optional embodiment, the steering mechanism 8 includes a turntable 806 for turning the preform holder at the longitudinal double track 9 reversal point; it also includes a servo motor reducer 801, a support base 802, a third reducer base 803, several columns 804, a second connecting plate 805, a preform transfer track 807, and a preform holder 808; the servo motor reducer 801 is disposed below the third reducer base 803 and its output part extends out of the third reducer base 803; the support base 802 is fixedly disposed below the third reducer base 803 and thus fixedly connected to the machine frame table; the upper surface of the third reducer base 803 is fixedly connected to the lower surface of the preform transfer track 807 through several columns 804; the output end of the servo motor reducer 801 is connected to the turntable 806 through the second connecting plate 805; the preform holder 808 is placed in the track of the turntable 806.

[0039] As a preferred or optional embodiment, the mold closing track 6 is provided with a bottle lowering mechanism mounting position near the outer side of the first transverse track 1 for fixing and installing the bottle lowering mechanism.

[0040] As a preferred or optional embodiment, the first lateral stepping mechanism 102 includes a first fixed plate 1021, a pusher 1022, a first sliding guide rail 1023, a servo motor 1024, a reducer 1025, a first gear 1026, a second rack 1027, a bolt roller 1028, and a first reducer base 1029; the servo motor 1024 and the reducer 1025 are disposed through one side of the first fixed plate 1021, and their output ends protrude from the first fixed plate 1021 and are fixedly connected to the first gear 1026; two first sliding guide rails 1023 are provided on the other side surface of the first fixed plate 1021, and the pusher... The base 1022 is slidably connected to the top of the first fixed plate 1021 via the first sliding guide rail 1023; the second rack 1027 is disposed between the two first sliding guide rails 1023, one end of the second rack 1027 is fixedly connected to the lower end of the push base 1022, and the other end is meshed with the first gear 1026; the upper end of the servo motor 1024 is drivenly connected to the reducer 1025, and the reducer 1025 is fixedly connected to the lower surface of the first fixed plate 1021; the bolt roller 1028 is fixedly disposed on the upper surface of the first fixed plate 1021, and is arranged corresponding to the first gear 1026 to limit the second rack 1027 from shifting.

[0041] As a preferred or optional embodiment, the second transverse stepping mechanism 7 includes a second fixed plate 701, two second sliding rails 702 disposed on the second fixed plate 701, a second motor base 703, a slide block 704, a connecting seat 705, a servo motor 706, a first bearing seat 707, a coupling 708, a ball screw 709, a slide block 710, a bearing 711, a second bearing seat 712, and a bearing cap 713; the front end of the connecting seat 705 is fixedly connected to the slide block 704, the slide block 704 is slidably connected to the second fixed plate 701 through the sliding rails 702, the connecting seat 705 passes through the second fixed plate 701, and is fixedly connected to the slide block 710 below the second fixed plate 701; the second fixed plate 701 is located away from the connecting seat 705. One end of the receiving seat 705 is fixedly connected to the lower part of the second motor seat 703. The servo motor 706 is fixedly installed in the middle of the second motor seat 703. The output end of the servo motor 706 is connected to one end of the ball screw 709 through the coupling 708. The ball screw 709 is rotatably connected to the side of the second fixed plate 701 away from the servo motor 706 through the first bearing seat 707 and the second bearing seat 712. The first bearing seat 707 is provided with a bearing 711; the second bearing seat 712 is also provided with a bearing 711. When the servo motor 706 is started, the output shaft drives the ball screw 709 to rotate. The rotation of the ball screw 709 drives the slide 710 to reciprocate, which drives the preform holder connected in the slot above the slide 704 to reciprocate along the sliding track 702.

[0042] The operating principle of the chain conveyor assembly for this one-out-two blow molding machine is as follows: After passing through the bottle unloading mechanism, the preform holder enters the first transverse track 1 through the action of the first transverse stepping mechanism. The first transverse track 1 is divided into two tracks by the first pitch-changing mechanism. At the beginning of the track, the center distance between the two tracks is equal to the mold cavity spacing, i.e., the large spacing. At the end of the first transverse track 1, the spacing between the two tracks is equal to the outer diameter of the bearing of the preform holder, i.e., the small spacing. The end of the first transverse track 1 is connected to the longitudinal single track 4. Under the push of the first transverse stepping mechanism 102, the two rows of preform holders simultaneously enter the longitudinal single track 4 from the first transverse track 1. Under the push of the preform pushing mechanism 3, the preform holder steps into the longitudinal double track 9 within the longitudinal single track 4. At approximately the middle position of the longitudinal single track, the preform is placed on the preform holder by the preform loading mechanism and enters the chain conveyor. At the light box, the outer track and the returning inner track share one side of the track bar, which brings the distance between the outer and inner tracks closer to ensure that the distance between the preforms between the tracks is minimized, so that a single row of lamps can be arranged above the shared track bar to heat the preforms on both sides. Simultaneously, a steering mechanism 8 and a blank-pushing mechanism 3 are provided at the turning point of the longitudinal double track 9. The steering mechanism 8 is used to reverse the direction of the preform holder, and the blank-pushing mechanism 3 is used to make the preform holder, which has reversed its direction, step towards the return direction of the longitudinal double track. When the preform holder moves to the exit of the light box, it enters the second transverse track 5 under the push of the second transverse stepping mechanism 7. At the beginning of the second transverse track 5, the distance between the preform holders is equal to the outer diameter of the bearing of the preform holder (i.e., small spacing), and at the end of the second transverse track 5, the distance between the preform holders is equal to the spacing of the mold cavity (i.e., large spacing). Under the push of the second transverse stepping mechanism 7, the preform holder steps into the mold closing track 6. The beginning of the mold closing track 6 is connected to the second transverse track 5, and the end is connected to the first transverse track 1. The preform slides to the sealing cylinder of the mold closing mechanism under the push of the mold closing and turning mechanism, and completes the stretch blowing process according to the blowing process. The finished bottle is then moved to the unloading station at the end of the mold closing track by the turning mechanism to complete the unloading operation and realize the separation of the finished bottle from the blowing machine.

[0043] The aforementioned device of this invention enables the preform to circulate within a convex chain track along with the preform holder. At the light box, the distance of the return chain track is relatively short, employing a mechanism with a row of heating lamps arranged in the middle. Simultaneously, the preform spacing also adopts a small-pitch structure, significantly reducing heat loss and improving thermal efficiency. After the preform slides out of the light box with the preform holder, the variable-pitch mechanism of the chain track increases the distance between adjacent preform holders to the large distance required by the mold-closing mechanism, satisfying the larger spacing after preform stretching and forming. The formed bottle separates from the preform holder at the lower bottle location, and the separated preform holders are then restored to the small spacing at the light box via the variable-pitch mechanism. This allows for the heating, stretching, and mold-closing of preforms of different specifications, effectively preventing bottle interference after mold closing, further reducing heat loss, improving thermal efficiency, and significantly expanding the application range of the blow molding machine. Furthermore, as it is a two-in-one machine, it greatly increases the production capacity of the blow molding machine, providing users with higher cost-effectiveness.

[0044] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A chain track assembly for a one-for-two bottle blowing machine, comprising a track and a preform seat slidingly connected to the track, characterized in that: The track is "convex", including a longitudinal single track (4), a longitudinal double track (9), a second transverse track (5), a second variable distance mechanism (501), a mold closing track (6), a first transverse track (1) and a first variable distance mechanism (101) connected in sequence; the longitudinal double track (9) is a bidirectional turn-back track for bottle preform heating, one end of which is connected with the tail of the longitudinal single track (4), and the other end is connected with the head of the second transverse track (5); The second transverse track (5) is provided with a second variable distance mechanism (501) in the middle part, so as to separate the longitudinal single track of the second transverse track (5) into a transverse double track with a gap; the first transverse track (1) is provided with a first variable distance mechanism (101) in the middle part, so as to separate the longitudinal single track of the first transverse track (1) into a transverse double track with a gap; The first variable distance mechanism (101) is an integrated mechanism with a rectangular lower section and a triangular upper section; The second variable distance mechanism (501) is an integrated mechanism with a rectangular lower section and a triangular upper section; and the lower part length of the second variable distance mechanism (501) is less than the lower part length of the first variable distance mechanism (101).

2. The chain track assembly for a two-up bottle machine of claim 1, wherein, The middle part of the longitudinal single track (4) is provided with a preform feeding mechanism mounting position (2) for mounting a bottle blowing machine preform feeding mechanism; and the side of the tail of the first transverse track (1) connected with the head of the longitudinal single track (4) is fixedly provided with a preform pushing mechanism (3).

3. The chain track assembly of claim 2, wherein, The turn-back position of the longitudinal double track (9) is fixedly connected with a turning mechanism (8); the outer side of the turning mechanism (8) is fixedly provided with a preform pushing mechanism (3).

4. The chain track assembly of claim 3, wherein, The preform pushing mechanism (3) comprises a preform pushing block (301), a preform pushing motor (302), a first rack (303), a fixed seat (304), a gear (305), a first connecting plate (306) and a third sliding guide rail (307); the fixed seat (304) is fixed on the bottle blowing machine frame, and the upper end thereof is provided with a third sliding guide rail (307); the preform pushing motor (302) is fixedly connected to the fixed seat (304), the output end of which extends out of the fixed seat (304) and is in transmission connection with the gear (305); the lower end of the preform pushing block (301) is slidably connected to the upper end of the fixed seat (304) through the third sliding guide rail (307), and the end of the preform pushing block (301) away from the preform pushing motor (302) is fixedly connected with the upper end of the first connecting plate (306); the lower end of the first connecting plate (306) is fixedly connected with the upper end of the first rack (303); and the lower end of the first rack (303) is in meshing connection with the gear (305).

5. The chain track assembly of claim 1, wherein, The second transverse track (5) is provided below with a second transverse stepping mechanism (7) for pushing the bottle preform seats from the tail end of the longitudinal double track (9) into the second transverse track (5) transversely, so as to realize the increase of the distance between two adjacent bottle preform seats through the variable distance of the second transverse track; The first transverse track (1) is provided with a first transverse stepping mechanism (102) below for pushing the bottle blank seats from the tail end of the mold closing track (6) into the first transverse track (1) to realize the reduction of the distance between two adjacent bottle blank seats.

6. The chain track assembly of claim 5, wherein, The distance between two adjacent bottle blank seats is equal to the distance between the mold cavities when the bottle blank seats are away from the tail end of the second transverse track (5) and before entering the first transverse track (1), i.e. in the mold closing track (6). The distance between two adjacent bottle blank seats is equal to the outer diameter of the bearing of the bottle blank seats after entering the head end of the longitudinal single track (4) and before leaving the longitudinal double track (9).

7. The chain track assembly of claim 3, wherein, The turning mechanism (8) comprises a rotating disc (806) for turning the bottle blank seats at the turning position of the longitudinal double track (9). The turning mechanism (8) further comprises a servo motor reducer (801), a support seat (802), a third reducer seat (803), a plurality of columns (804), a second connecting plate (805), a blank turning track (807) and a blank seat (808); the servo motor reducer (801) is arranged at the lower part of the third reducer seat (803) and its output part penetrates through the third reducer seat (803); the lower part of the third reducer seat (803) is fixedly provided with the support seat (802) so as to be fixedly connected with the rack table top; the upper surface of the third reducer seat (803) is fixedly connected with the lower surface of the blank turning track (807) through a plurality of columns (804); the output end of the servo motor reducer (801) is drivingly connected with the rotating disc (806) through the second connecting plate (805); the blank seat (808) is arranged in the track of the rotating disc (806).

8. The chain track assembly of claim 1, wherein, The mold closing track (6) is provided with a bottle lowering mechanism mounting position outside the head end of the first transverse track (1) for fixedly mounting the bottle lowering mechanism.

9. The chain track assembly of claim 5, wherein, The first transverse stepping mechanism (102) comprises a first fixed plate (1021), a push seat (1022), a first sliding guide rail (1023), a servo motor (1024), a speed reducer (1025), a first gear (1026), a second rack (1027), a bolt roller (1028) and a first speed reducer seat (1029); the servo motor (1024) and the speed reducer (1025) are arranged through one side of the first fixed plate (1021), and the output end of the servo motor (1024) and the speed reducer (1025) is fixedly connected with the first gear (1026) and penetrates through the first fixed plate (1021); the other side surface of the first fixed plate (1021) is provided with two first sliding guide rails (1023), and the push seat (1022) is slidingly connected above the first fixed plate (1021) through the first sliding guide rail (1023); the second rack (1027) is arranged between the two first sliding guide rails (1023), one end of the second rack (1027) is fixedly connected with the lower end of the push seat (1022), and the other end is meshingly connected with the first gear (1026); the upper end of the servo motor (1024) is drivingly connected with the speed reducer (1025), and the speed reducer (1025) is fixedly connected with the lower surface of the first fixed plate (1021); the bolt roller (1028) is fixedly arranged on the upper surface of the first fixed plate (1021), and is arranged corresponding to the first gear (1026) for limiting the second rack (1027) from being deviated.

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