Injection-blowing all-in-one machine turntable structure easy to maintain

Abstract

The utility model discloses an injection-blowing all-in-one machine turntable structure easy to maintain. The injection-blowing all-in-one machine turntable structure comprises a turntable frame, a rotating mold, a rotating seat and a driving device, the two opposite side faces of the rotating mold face an injection mold and a blowing mold of the injection-blowing all-in-one machine respectively; the driving device is arranged below the bottom surface of the turntable frame and comprises a driving motor, a driving gear and a driven gear; the rotating seat penetrates through the turntable frame and is connected with the rotating die; rotating the rotating mold, rotating the bottle blank subjected to injection molding by 180 degrees, and transferring the bottle blank into a blow molding mold for blow molding; according to the utility model, the space below the turntable frame is utilized, and the driving device is arranged below the turntable base, so that the design space of the rotating die is increased, the number of convex columns for placing bottle blanks on the rotating die can be increased, the number of the bottle blanks of one die is increased, and the productivity is improved; and on the other hand, the driven gear, the driving gear and the driving motor are all arranged below the rotating disc base, and the problem that in the equipment operation process, foreign matter such as plastic falls into the driven gear or the driving gear to cause tooth clamping can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing equipment, in particular to a turntable structure of an injection-blowing integrated machine which is easy to maintain. Background Art

[0002] In the field of plastic processing technology, blow-molded bottles need to be formed into blow-molded bottle blanks using the injection molding process before blow molding. That is, most of its processing is divided into three steps: first, the raw materials are heated in the injection molding machine and then injection-molded into bottle blanks, and then the bottle blanks are placed in the blow molding machine by manual transfer or robot grabbing and transferring, and finally the blow molding machine performs blow molding and obtains the finished product for external transportation. This requires the cooperation of two devices, the equipment occupies a large area, and the production cost is high; the processing steps are cumbersome, and the production efficiency is low. Therefore, an injection-blowing machine has appeared on the market, which integrates the two processes of injection molding and blow molding into one device, greatly improving production efficiency.

[0003] However, there are some problems with the structural design of the traditional injection-blow molding machine. For example, the gears are usually set on the upper part of the turntable frame, which not only takes up the setting space of the turntable structure, but also during operation, debris can easily fall into the gears, causing problems such as stuck teeth, increasing the failure rate of the turntable structure, and increasing the difficulty and cost of equipment maintenance. At the same time, the traditional turntable structure has insufficient stable rotation performance. In addition, the turntable structure frame of the traditional injection-blow molding machine adopts an integrated design, which makes it difficult to disassemble, and also increases the difficulty of processing and maintenance costs.

[0004] Therefore, further research and development is needed to design an injection-blowing machine turntable structure that is easy to maintain. Utility Model Content

[0005] Therefore, in order to solve the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a turntable structure of an injection-blowing machine that is easy to maintain.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] An easy-to-maintain turntable structure of an injection-blowing machine comprises a turntable frame, a rotating mold rotatably arranged in an inner cavity of the turntable frame, a rotating seat for driving the rotating mold to rotate, and a driving device connected to the rotating seat; the rotating mold faces two opposite sides respectively facing the injection mold and the blow mold of the injection-blowing machine; and is respectively provided with a plurality of convex columns for placing bottle blanks; the driving device drives the rotating seat to drive the rotating mold to rotate, and after the bottle blanks that have been injected toward the injection mold side are rotated 180 degrees, they are transferred to the blow mold for blow molding;

[0008] The driving device is arranged below the bottom surface of the turntable frame and includes a driving motor, a driving gear drivingly connected to the output shaft of the driving motor, and a driven gear; the rotating seat passes through the turntable frame and is connected to the rotating mold.

[0009] Further, the turntable frame includes a turntable top plate, turntable side plates, and a turntable base connected by fasteners; a space for accommodating the rotating mold is formed among the turntable top plate, turntable side plates, and turntable base; the driving motor, driving gear, and driven gear are arranged on the bottom surface of the turntable base; the rotating seat passes through the turntable base and is connected to the rotating mold.

[0010] Further, the rotating seat includes a rotating shaft integrally formed in a "T" shape and a turntable located at the top of the rotating shaft; the turntable base is provided with a through hole, the turntable is located above the turntable base, the rotating shaft passes through the through hole and is sleeved and connected to the driven gear; upper and lower bearings sleeved on the outer periphery of the rotating shaft are arranged in the through hole.

[0011] Further, an "I"-shaped adapter seat is arranged between the rotating seat and the rotating mold, the top end of the adapter seat is connected to the rotating mold, and the bottom end is connected to the rotating seat.

[0012] Further, the upper bearing is a thrust tapered roller bearing, and the lower bearing is a deep groove ball bearing.

[0013] Further, a positioning assembly for the rotating mold to rotate in place and be locked is arranged on the turntable base; the positioning assembly includes a positioning cylinder fixed to the bottom of the turntable base and a positioning pin connected to the end of the telescopic rod of the positioning cylinder, and the turntable positioning pin can reciprocate in the vertical direction; a positioning pin hole is formed through the driven gear, a limiting hole corresponding to the positioning pin hole is arranged on the turntable base, and the positioning pin passes through the positioning pin hole and is arranged in the limiting hole, so that the rotating mold is locked after rotating in place.

[0014] Further, a semi-circular arc-shaped positioning chute is arranged on the surface of the driven gear away from the turntable base, and one of the positioning pin holes is arranged at each of the two ends of the positioning chute.

[0015] Further, positioning blocks corresponding to the positioning pin holes are arranged on the positioning chute; a positioning pin sheath is sleeved on the outer periphery of the positioning pin, and the end of the positioning pin sheath extends to the inner side of the positioning block.

[0016] Further, an induction switch for sensing that the rotating mold rotates in place is arranged on the side of the turntable base; the injection and blowing integrated machine further includes a control system electrically connected to the induction switch and the positioning cylinder; the control system is used for receiving the signal of the induction switch and controlling the positioning cylinder to drive the positioning pin to move.

[0017] Furthermore, a turntable guide sleeve is detachably provided between the turntable side plate and the turntable top plate respectively; the turntable guide sleeve is provided with a guide hole, and the guide hole is used to coaxially arrange the turntable structure between the injection mold and the blow molding mold through a guide rod.

[0018] Compared with the prior art, the beneficial effects of the present utility model are at least in the following aspects:

[0019] 1. The present utility model improves the turntable structure. By utilizing the space below the turntable frame, the driving device is arranged below the turntable base, increasing the design space of the rotating mold. On the one hand, the number of convex columns for placing preforms on the rotating mold can be increased, the number of preforms in one mold can be increased, and the production efficiency can be improved; on the other hand, by arranging the driven gear, the driving gear and the driving motor below the turntable base, it can be avoided that plastic and other foreign objects fall into the driven gear or the driving gear during the operation of the equipment, causing problems such as gear jamming. It serves multiple purposes, maximally utilizes the space, reduces the exposure and damage risk of mechanical transmission components, reduces the failure rate and maintenance cost of the equipment, and improves the production efficiency at the same time.

[0020] 2. On the basis of increasing the space of the turntable frame, the present utility model further improves the structure of the turntable frame, modularizes the turntable frame, including a turntable top plate, a turntable side plate and a turntable base. Each module is connected by fasteners to form a complete turntable frame; such a split setting makes it more convenient and fast to replace components or perform maintenance, reduces the processing difficulty, improves the maintenance efficiency, and reduces the maintenance cost; at the same time, it can make the production of each module standardized, and the design and assembly of the equipment are also simpler and more flexible, adapting to different production requirements and process improvements, and reducing the production cost.

[0021] 3. The present utility model also ensures the precise positioning of the rotating mold in each production cycle through an improved positioning and locking system; specifically, the combination of the positioning cylinder and the positioning pin, as well as the design of the positioning chute and the positioning block, enables the rotating mold to rotate and lock stably and precisely, effectively avoiding the situation that the turntable fails to rotate in place due to misalignment or other errors during use, affecting the quality of the injection and blow molding processes, improving the yield rate, and extending the service life of the equipment; on the other hand, it can also reduce the debugging work of the turret device, saving time and effort.

[0022] 4. The present utility model adopts components such as driving cylinders and inductive switches to further improve the accuracy of the rotating mold rotating in place, with high mechanical intelligence and strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the injection-blow molding machine turntable structure that is easy to maintain in the preferred embodiment of the present utility model;

[0024] Figure 2 Another perspective schematic diagram of the overall structure of the rotary table structure of the injection-blow molding machine that is easy to maintain according to the preferred embodiment of the present utility model;

[0025] Figure 3 Exploded schematic diagram of the overall structure of the rotary table structure of the injection-blow molding machine that is easy to maintain according to the preferred embodiment of the present utility model;

[0026] Figure 4 Cross-sectional schematic diagram of the overall structure of the rotary table structure of the injection-blow molding machine that is easy to maintain according to the preferred embodiment of the present utility model;

[0027] Figure 5 is Figure 3 Enlarged schematic diagram of the partial structure at A in

[0028] Figure 6 Assembly schematic diagram of the driven gear structure of the rotary table structure of the injection-blow molding machine that is easy to maintain according to the preferred embodiment of the present utility model;

[0029] Figure 7 Brief schematic diagram of the assembly state of the rotary table structure of the injection-blow molding machine that is easy to maintain according to the preferred embodiment of the present utility model with the injection mold and the blow molding mold.

[0030] In the figure:

[0031] 1, turntable frame; 11, turntable top plate; 12, turntable side plate; 13, turntable base; 131, through hole; 132, limit hole; 14, turntable guide sleeve; 141, guide hole; 2, rotating mold; 21, convex column; 3, rotating seat; 31, rotating shaft; 32, turntable; 4, driving device; 41, driving motor; 42, driving gear; 43, driven gear; 431, positioning pin hole; 432, positioning chute; 433, positioning block; 5, upper bearing; 6, lower bearing; 7, adapter seat; 8, positioning component; 81, positioning cylinder; 82, positioning pin; 83, positioning pin sheath; 9, induction switch;

[0032] 10, injection mold; 20, blow molding mold; 30, guide rod. Detailed implementation mode

[0033] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below in conjunction with relevant drawings and embodiments. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0034] Such as Figures 1-7As shown in the figure, the present utility model provides a rotary table structure for an injection-blow molding integrated machine that is easy to maintain, including a rotary table frame 1, a rotary mold 2 rotatably arranged in the inner cavity of the rotary table frame 1, a rotary seat 3 for driving the rotary mold 2 to rotate, and a driving device 4 drivingly connected to the rotary seat 3; both opposite sides of the rotary mold 2 face the injection mold 10 and the blow mold 20 of the injection-blow molding integrated machine respectively; and a plurality of convex columns 21 for placing preforms are respectively provided; the driving device 4 drives the rotary seat 3 to drive the rotary mold 2 to rotate, and after rotating the preforms completed with injection on the side facing the injection mold 10 by 180°, transfers them to the blow mold 20 for blow molding.

[0035] The driving device 4 is arranged below the bottom surface of the rotary table frame 1, and includes a driving motor 41, a driving gear 42 drivingly connected to the output shaft of the driving motor 41, and a driven gear 43; the rotary seat 3 passes through the rotary table frame 1 and is connected to the rotary mold 2.

[0036] In this embodiment, the functional principle of the rotary table structure applied to the injection-blow molding integrated machine is as follows: on a fixed injection mold, a driving mechanism for driving the rotary table structure to move between the injection mold and the blow mold is provided. When the rotary table structure approaches the injection mold, after the preforms on the side close to the injection mold are completed with injection in the injection mold cavity, the rotary table structure is driven to move away from the injection mold, and under the action of the driving device, the rotary mold rotates by 180°, rotating the side originally facing the injection mold to the side close to the blow mold, and the blow mold can also be driven by an external force to approach and closely adhere to the rotary table structure, so that the preforms completed with injection on the rotary table structure are blow molded in the blow mold cavity.

[0037] Therefore, through this rotary table structure, the present utility model realizes an integrated design of injection-blow molding, reduces the floor area of the equipment, lowers the production cost, and has good economic benefits.

[0038] It should be noted that the movement, control means required for the operation, operation space, etc. of other components of the injection-blow molding integrated machine are not the objects of improvement of the present utility model and will not be elaborated here.

[0039] In this embodiment, the driving device is arranged below the bottom surface of the turntable frame. This means that the entire driving device is placed under the bottom surface of the turntable frame and is blocked by the turntable frame, without any part being exposed outside the turntable frame. In this way, by using the space below the turntable frame, the driving device is arranged under the turntable base, increasing the design space of the rotary mold. On the one hand, the number of convex columns for placing preforms on the rotary mold can be increased, the number of preforms in one mold can be increased, and the production efficiency can be improved; on the other hand, by arranging the driven gear, the driving gear, and the driving motor under the turntable base, it can be avoided that plastic and other foreign objects fall into the driven gear or the driving gear during the operation of the equipment, causing problems such as gear jamming. It serves multiple purposes, making the most of the space, reducing the exposure and damage risk of mechanical transmission components, reducing the failure rate and maintenance cost of the equipment, and improving the production efficiency at the same time.

[0040] To achieve the modular design and production of the present utility model, preferably, the turntable frame 1 includes a turntable top plate 11, a turntable side plate 12, and a turntable base 13 connected by fasteners; a space for accommodating the rotary mold 2 is formed between the turntable top plate 11, the turntable side plate 12, and the turntable base 13; the driving motor 41, the driving gear 42, and the driven gear 43 are arranged on the bottom surface of the turntable base 13; the rotating seat 3 passes through the turntable base 13 and is connected to the rotary mold 2. In addition, the top of the rotary mold is also rotatably connected to the turntable top plate through a rotating shaft and a bearing (not shown in the drawings).

[0041] Further introducing the structure of the turntable frame, turntable guide sleeves 14 are detachably provided between the turntable side plate 12 and the turntable top plate 11, and on both sides of the turntable base; the turntable guide sleeve 14 is provided with a guide hole 141, and the guide hole 141 is used to coaxially arrange the turntable structure between the injection mold 10 and the blow molding mold 20 through a guide rod 30.

[0042] Therefore, in this embodiment, on the basis of increasing the space of the turntable frame, the structure of the turntable frame is further improved, and the turntable frame is modularized, including a turntable top plate, a turntable side plate, and a turntable base. Each module is connected by fasteners to form a complete turntable frame; such a split setting makes it more convenient and fast to replace components or perform maintenance, reduces the processing difficulty, improves the maintenance efficiency, and reduces the maintenance cost; at the same time, it can make the production of each module standardized, and the design and assembly of the equipment are also simpler and more flexible, adapting to different production requirements and process improvements, and reducing the production cost.

[0043] Preferably, the rotating base 3 includes a rotating shaft 31 integrally formed in a "T" shape and a turntable 32 located at the top of the rotating shaft 31; the turntable base 13 is provided with a through hole 131, the turntable 32 is located above the turntable base 13, the rotating shaft 31 passes through the through hole 131 and is sleeved and connected with the driven gear 43; upper bearings 5 and lower bearings 6 sleeved on the outer periphery of the rotating shaft 31 are respectively arranged in the through hole 131. Specifically, the upper bearing 5 is a thrust tapered roller bearing, and the lower bearing 6 is a deep groove ball bearing.

[0044] In this embodiment, the T-shaped rotating base is designed, which not only increases the bearing area at the bottom of the rotating die, but also does not require a larger rotating structure and power. At the same time, it can also be supported by the bottom of the turntable frame. In order to improve the stability of rotation, using a thrust tapered roller bearing as the upper bearing can effectively bear the thrust in the vertical direction. Its structure enables the rotating shaft to maintain a high rotational accuracy and balance during the rotation process, and the deep groove ball bearing as the lower bearing can bear the radial load and provide good radial support, enabling the rotating shaft to operate stably under various working conditions.

[0045] In order to further realize the modularization of the turntable frame and improve the flexibility of equipment maintenance, preferably, an "I"-shaped adapter seat 7 is provided between the rotating base 3 and the rotating die 2. The top end of the adapter seat 7 is connected to the rotating die 2, and the bottom end is connected to the rotating base 3. In this way, when the driving device or the rotating die needs to be maintained separately, it can be disassembled separately without affecting each other, reducing the maintenance difficulty.

[0046] Preferably, a positioning component 8 for the rotating die 2 to rotate in place and lock is provided on the turntable base 13; the positioning component 8 includes a positioning cylinder 81 fixed to the bottom of the turntable base 13 and a positioning pin 82 connected to the end of the telescopic rod of the positioning cylinder 81. The turntable positioning pin 82 can reciprocate in the vertical direction; a positioning pin hole 431 is provided through the driven gear 43, and a limiting hole 132 corresponding to the positioning pin hole 431 is provided on the turntable base 13. The positioning pin 82 passes through the positioning pin hole 431 and is inserted into the limiting hole 132, so that the rotating die 2 is locked after rotating in place.

[0047] It should be noted that the driving motor in this embodiment can be a stepping motor in the prior art, and the driving cylinder is also a driving cylinder in the prior art. Its working principle can refer to the prior art.

[0048] To further improve the rotation accuracy and prevent deviation, preferably, a semi-circular positioning chute 432 is provided on the side of the driven gear 43 away from the turntable base 13, and a positioning pin hole 431 is provided at each of the two ends of the positioning chute 432. That is, the positioning chute itself can cooperate to determine the initial positioning when the rotary die rotates 180° in place. And a positioning block 433 corresponding to the positioning pin hole 431 is provided on the positioning chute 432; a positioning pin sheath 83 is sleeved on the outer periphery of the positioning pin 82, and the end of the positioning pin sheath 83 extends to the inside of the positioning block 433. That is to say, when the rotary die rotates in place, the positioning block at the end of the positioning chute first contacts the positioning pin sheath 83, forming a certain in-place prompt and protection for the positioning pin;

[0049] Meanwhile, preferably, an induction switch 9 for sensing the in-place rotation of the rotary die 2 is provided on the side of the turntable base 13; the injection and blowing integrated machine further includes a control system (not shown in the drawing) electrically connected to the induction switch 9 and the positioning cylinder 81; the control system is used to receive the signal of the induction switch 9 and control the positioning cylinder 81 to drive the positioning pin 82 to move. That is, the induction switch can accurately sense the in-place signal of the rotary die and send it, making the positioning more accurate.

[0050] Specifically, in the embodiment, the induction switch can be an inductive proximity switch purchased in the prior art. It is a non-contact detection switch, and its working principle can refer to the working principle of the inductive proximity switch in the prior art; in this embodiment, the induction switch is provided on the side of the turntable base, and its sensing part can be close to the side of the driven gear, and the proximity sensing range is set. The driven gear is made of metal and includes a protruding tooth top and a recessed tooth root. When the driven gear rotates, the tooth top of the gear passes through the induction switch, and the induction switch senses the metal information and transmits a signal to the control system once. When the tooth root passes through the induction switch, the induction switch cannot sense the metal information and does not send a signal; the control system can calculate the number of teeth passed by the driven gear according to the number of signals transmitted by the induction switch, calculate whether the rotation angle reaches the established 180°, so as to decide whether to control the positioning pin to extend or retract, and at the same time control the operation and cooperation of other components.

[0051] In the present utility model, the starting point and the ending point of the rotation are calculated based on the two positioning pin holes.

[0052] It should be noted that the injection and blowing integrated machine of the present utility model further includes other components or modules that meet its injection and blowing functions, and the present utility model does not elaborate on them.

[0053] The operation process of the present utility model is as follows: First, the blow molding die and the turntable structure are respectively driven by their respective power mechanisms and move coaxially closer to the injection molding die (in the mold-locked state) under the action of the guide rod; in this state, both sides of the turntable structure are respectively in close contact with the blow molding die and the injection molding die, and at the same time the turntable structure is locked to complete the injection molding action; then, the blow molding die and the turntable structure respectively retreat away from the injection molding die (in the mold-open state), and the control system controls the positioning component to enable the rotary die to rotate 180°, and the preforms completed with injection molding on the rotary die complete the blow molding action in the corresponding blow molding cavity; and the injection molding die also approaches the turntable structure (mold-locked again) under the drive of an external force, and the injection molding action continues on the side of the rotary die in contact with the injection molding die; finally, the mold-open action is repeated again to eject the product on the side completed with blow molding (conventional blanking), and then the above process is repeated.

[0054] The above embodiments are only the preferred embodiments of the present utility model, and the protection scope of the present utility model cannot be limited thereby. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary table structure of an injection-blow molding integrated machine that is easy to maintain, characterized in that It includes a turntable frame, a rotating mold rotatably arranged in the inner cavity of the turntable frame, a rotating base for driving the rotation of the rotating mold, and a driving device in transmission connection with the rotating base; the two opposite side faces of the rotating mold face the injection mold and the blow mold of the injection-blow molding machine respectively; and a number of convex columns for placing preforms are respectively provided. The driving device drives the rotating base to drive the rotating mold to rotate, and after rotating the preform completed injection on the side facing the injection mold by 180°, it is transferred to the blow mold for blow molding. The driving device is arranged below the bottom surface of the turntable frame and includes a driving motor, a driving gear in transmission connection with the output shaft of the driving motor, and a driven gear; the rotating base passes through the turntable frame and is connected to the rotating mold.

2. The turntable structure of the injection-blow molding integrated machine that is easy to maintain according to claim 1, wherein, The turntable frame includes a turntable top plate, a turntable side plate, and a turntable base connected by fasteners; a space for accommodating the rotating mold is formed among the turntable top plate, the turntable side plate, and the turntable base. The driving motor, the driving gear, and the driven gear are arranged on the bottom surface of the turntable base; the rotating base passes through the turntable base and is connected to the rotating mold.

3. The turntable structure of the injection-blow molding integrated machine that is easy to maintain according to claim 2, characterized in that, The rotating base includes a rotating shaft integrally formed in a "T" shape and a turntable located at the top of the rotating shaft; the turntable base is provided with a through hole, the turntable is located above the turntable base, the rotating shaft passes through the through hole and is sleeved and connected with the driven gear; upper and lower bearings sleeved on the outer periphery of the rotating shaft are arranged in the through hole.

4. The turntable structure of the injection-blow molding integrated machine that is easy to maintain according to claim 3, wherein, An "I"-shaped adapter seat is arranged between the rotating base and the rotating mold, the top end of the adapter seat is connected to the rotating mold, and the bottom end is connected to the rotating base.

5. The turntable structure of the injection-blow molding integrated machine that is easy to maintain according to claim 3, characterized in that, The upper bearing is a thrust tapered roller bearing, and the lower bearing is a deep groove ball bearing.

6. The turntable structure of the injection-blow molding machine that is easy to maintain according to claim 5, characterized in that, A positioning component for the rotating mold to rotate in place and be locked is arranged on the turntable base; the positioning component includes a positioning cylinder fixed to the bottom of the turntable base and a positioning pin connected to the end of the telescopic rod of the positioning cylinder, and the positioning pin can reciprocate in the vertical direction; a positioning pin hole is provided through the driven gear, and a limiting hole corresponding to the positioning pin hole is arranged on the turntable base, and the positioning pin passes through the positioning pin hole and is inserted into the limiting hole, so that the rotating mold is locked after rotating in place.

7. The turntable structure of the injection-blow molding integrated machine that is easy to maintain according to claim 6, characterized in that, A semi-circular arc-shaped positioning chute is arranged on the surface of the driven gear away from the turntable base, and a positioning pin hole is respectively arranged at both ends of the positioning chute.

8. The turntable structure of the injection-blow molding integrated machine that is easy to maintain according to claim 7, characterized in that, A positioning block corresponding to the positioning pin hole is arranged on the positioning chute; a positioning pin sheath is sleeved on the outer periphery of the positioning pin, and the end of the positioning pin sheath extends to the inner side of the positioning block.

9. The rotary table structure of the injection and blowing integrated machine that is easy to maintain according to claim 7, characterized in that An induction switch for sensing that the rotating mold rotates in place is arranged on the side of the turntable base; the injection-blow molding machine further includes a control system electrically connected to the induction switch and the positioning cylinder; the control system is used for receiving the signal of the induction switch and controlling the positioning cylinder to drive the positioning pin to move.

10. The easy-to-maintain rotary table structure of the injection-blow molding machine according to claim 2, characterized in that, Turntable guide sleeves are respectively detachably arranged between the turntable side plate and the turntable top plate; the turntable guide sleeve is provided with a guide hole, and the guide hole is used for coaxially arranging the turntable structure between the injection mold and the blow mold through a guide rod.

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