A preform feeding device of a bottle blowing machine and a bottle blowing machine

Abstract

The present application belongs to the technical field of bottle blowing machine, and discloses a blank feeding device of a bottle blowing machine and the bottle blowing machine. The blank feeding device comprises a left blank feeding seat, a right blank feeding seat, a blank feeding star wheel, a blank blocking mechanism and a telescopic mechanism. The left blank feeding seat and the right blank feeding seat are arranged at intervals and define a blank feeding channel. One of the left blank feeding seat and the right blank feeding seat is provided with a bottle blowing nozzle. The blank feeding channel has a notch. The blank feeding star wheel is provided with a plurality of gear teeth, and part of the gear teeth are located in the blank feeding channel. When the blank feeding star wheel rotates, it can push the bottle blank in the blank feeding channel to move. The blank blocking mechanism has a blank blocking piece that can extend into the blank feeding channel from the notch to block the movement of the bottle blank. The telescopic mechanism has a movable piece corresponding to the notch. When the teeth of the blank feeding star wheel push against the bottle blank, the blank feeding device can timely discharge the bottle blank from the blank feeding channel, avoid the phenomenon of blank feeding overload, and reduce the probability of equipment emergency stop.

Description

Technical Field

[0001] This invention relates to the field of blow molding machine technology, and more particularly to a preform feeding device and a blow molding machine. Background Technology

[0002] The main processes in blow molding to form bottles from preforms include preform preparation, heating, and blow molding. After preform preparation, the preforms enter the feeding star wheel, which then rotates them to the heating unit. With increasing market demand, blow molding machines require higher output and faster speeds. This can lead to preform jamming and overload issues when the preforms enter the feeding star wheel, causing sudden equipment shutdowns, increasing production costs, and potentially damaging parts.

[0003] Currently, the preform feeding method in blow molding machines involves the preform entering the left and right preform feed seats from the lower preform chute, transitioning from the left and right preform feed seats to the preform feed star wheel, and then sliding down into the star wheel under its own weight. If the preform feeder fails to deliver the preform in time, resulting in insufficient thrust, or if the preform jumps or the support rings of two adjacent preforms stack together, the preform may fail to smoothly enter the preform transport station of the preform feed star wheel. This can cause the teeth of the preform feed star wheel to press against the preform, resulting in preform overload and an emergency stop of the equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a preform feeding device for a blow molding machine. This device can promptly discharge the preform from the preform feeding channel when the tip of the preform feeding star wheel abuts against it, thereby avoiding preform overload and reducing the probability of sudden equipment stoppage.

[0005] The second objective of this invention is to provide a blow molding machine that can quickly discharge preforms that become skewed during the preform feeding process, thereby avoiding preform overload and reducing the likelihood of sudden equipment shutdown.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This invention discloses a preform feeding device for a blow molding machine, comprising: a left preform feeding seat and a right preform feeding seat, the left and right preform feeding seats being spaced apart and defining a preform feeding channel, one of the left and right preform feeding seats being provided with a blow molding nozzle, the preform feeding channel having a notch; a preform feeding star wheel, the preform feeding star wheel being provided with multiple gear teeth, some of the gear teeth being located in the preform feeding channel, the preform feeding star wheel being able to push the preform within the preform feeding channel to move when it rotates; a preform blocking mechanism, the preform blocking mechanism having a preform blocking member that can extend into the preform feeding channel from the notch to block the movement of the preform; a telescopic mechanism, the telescopic mechanism having a movable member corresponding to the notch; the skewed preform can move away from the preform feeding star wheel under the action of the gear teeth so that the movable member retracts, while the preform blocking member inserts into the preform feeding channel to block the continued movement of subsequent preforms, and the blow molding nozzle being able to blow the skewed preform out of the preform feeding channel.

[0008] In some embodiments, the telescopic mechanism further includes a drive cylinder and a first detection element, wherein the piston rod of the drive cylinder is connected to the movable element; the first detection element is used to detect the stroke of the movable element; when the stroke of the movable element reaches a first specified stroke, the piston rod of the drive cylinder automatically retracts, and the preform stopper is inserted into the preform inlet channel to block the subsequent movement of the preform.

[0009] In some specific embodiments, the first specified stroke is 2.5mm-3mm.

[0010] In some specific embodiments, the telescopic mechanism further includes a counter for recording the number of times the first detection element is triggered. When the number of times the first detection element is triggered reaches a specified number within a first specified time period, the preform feeding device of the blow molding machine stops.

[0011] In some specific embodiments, the telescopic mechanism further includes a second detection element, which is used to detect the stroke of the piston rod. When the stroke of the piston rod reaches a second specified stroke, the second detection element can be triggered. After the triggering time of the second detection element reaches a second specified time, the piston rod of the drive cylinder automatically extends, and the preform stopper leaves the preform inlet channel to release the subsequent preform to continue moving.

[0012] In some specific embodiments, the second specified duration is 4 to 6 seconds.

[0013] In some embodiments, the blow nozzle is installed at one end of the right preform holder near the telescopic mechanism.

[0014] In some embodiments, the blank-blocking mechanism includes: a mounting base having a through hole; a blank-blocking drive member, the blank-blocking drive member being mounted on the mounting base, the blank-blocking member being mounted on the power output end of the blank-blocking drive member, and passing through the through hole.

[0015] In some embodiments, the preform feeding device of the blow molding machine further includes a guard plate disposed around the preform feeding star wheel and located radially outside the preform feeding star wheel, and defining a preform exit channel between the guard plate and the preform feeding star wheel.

[0016] The present invention also discloses a blow molding machine, including the preform feeding device and the frame of the blow molding machine described above, wherein the preform feeding device of the blow molding machine is installed on the frame.

[0017] The beneficial effects of the preform feeding device of the blow molding machine of the present invention are as follows: In actual operation, if the preform is tilted, the tilted preform will be squeezed by the gear teeth when it enters the preform feeding star wheel from the preform feeding channel. When the preform passes through the notch, it will move away from the preform feeding star wheel so that the movable part retracts. At the same time as the movable part retracts, the preform blocking part is inserted into the preform feeding channel from the notch to block the subsequent preform from continuing to move. The blow molding nozzle can quickly blow air toward the stuck preform to make it disengage from the preform feeding star wheel, avoid preform overload, and thus reduce the probability of sudden equipment stoppage.

[0018] The beneficial effects of the blow molding machine of the present invention are as follows: due to the preform feeding device of the blow molding machine described above, when the preform is stuck on the tip of the tooth of the preform feeding star wheel, on the one hand, the preform blocking mechanism can block the subsequent preform from continuing to move, and on the other hand, the blowing air can be quickly blown towards the stuck preform to make it disengage from the preform feeding star wheel, thereby avoiding the phenomenon of preform overload in the blow molding machine and reducing the probability of sudden equipment stoppage.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the preform feeding device of the blow molding machine according to an embodiment of the present invention during normal preform feeding;

[0021] Figure 2 This is a schematic diagram of the preform feeding device of the blow molding machine according to an embodiment of the present invention when the preform feeding is abnormal;

[0022] Figure 3 yes Figure 2 A structural diagram of the structure from another angle.

[0023] Figure label:

[0024] 100. Left preform inlet; 200. Right preform inlet; 300. Preform inlet channel; 310. Notch; 400. Preform inlet star wheel; 410. Gear teeth; 500. Preform blocking mechanism; 510. Preform blocking component; 520. Mounting base; 530. Preform blocking drive component; 600. Telescopic mechanism; 610. Moving component; 620. Drive cylinder; 700. Bottle blowing nozzle; 800. Protective plate; 810. Preform passage; 900. Frame; 10. Bottle preform. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0028] This invention discloses a preform feeding device for a blow molding machine, with reference to... Figure 1 and Figure 2As shown, the preform feeding device of the blow molding machine includes a left preform feeding seat 100, a right preform feeding seat 200, a preform feeding star wheel 400, a preform blocking mechanism 500, and a telescopic mechanism 600. The left preform feeding seat 100 and the right preform feeding seat 200 are spaced apart and define a preform feeding channel 300. One of the left preform feeding seat 100 and the right preform feeding seat 200 is provided with a blow molding nozzle 700. The preform feeding channel 300 has a notch 310. The preform feeding star wheel 400 is provided with multiple teeth 410, some of which are located in the preform feeding channel 300. When the preform feeding star wheel 400 rotates, it can push the preform feeding channel 300. The preform 10 moves inside the bottle. The preform blocking mechanism 500 has a preform blocking member 510 that can extend into the preform inlet channel 300 from the notch 310 to block the movement of the preform 10. The telescopic mechanism 600 has a movable member 610 corresponding to the notch 310. The tilted preform 10 can move away from the preform inlet star wheel 400 under the action of the tooth tip of the gear 410 so that the movable member 610 retracts. At the same time, the preform blocking member 510 is inserted into the preform inlet channel 300 to block the subsequent preform 10 from continuing to move. The bottle blowing nozzle 700 can blow the tilted preform 10 out of the preform inlet channel 300.

[0029] It is understandable that when a normal preform 10 enters the preform star wheel 400 from the preform inlet channel 300, as... Figure 1 As shown, the preform 10 fits perfectly into the tooth groove of the preform feed star wheel 400. At this time, the preform 10 is not squeezed by the tooth tip of the tooth 410, and when the preform 10 passes through the notch 310, there is no squeezing of the moving part 610. If the preform 10 is tilted, the tilted preform 10 will enter the preform feed star wheel 400 from the preform feed channel 300 as follows... Figure 2 As shown, the preform 10 is squeezed by the gear teeth 410. When the preform 10 passes through the notch 310, it will move away from the preform feeding star wheel 400 so that the movable part 610 retracts. At the same time as the movable part 610 retracts, the preform blocking part 510 is inserted into the preform feeding channel 300 from the notch 310 to prevent the subsequent preform 10 from continuing to move. The bottle blowing nozzle 700 can quickly blow air toward the stuck preform 10 to make it disengage from the preform feeding star wheel 400, avoid preform feeding overload, and thus reduce the probability of equipment emergency stop.

[0030] refer to Figure 1 and Figure 3As shown, the telescopic mechanism 600 also includes a drive cylinder 620 and a first detection element (not shown). The piston rod of the drive cylinder 620 is connected to the movable member 610. The first detection element is used to detect the stroke of the movable member 610. When the stroke of the movable member 610 reaches a first specified stroke, the piston rod of the drive cylinder 620 automatically retracts, and the preform stopper 510 is inserted into the preform inlet channel 300 to prevent the subsequent bottle preforms 10 from continuing to move. It is understood that in actual operation, a relatively small degree of misalignment of the bottle preform 10 will not affect normal preform inlet. If a bottle preform 10 with a relatively small degree of misalignment is also blown out of the preform inlet channel 300, it will reduce the preform inlet efficiency of the preform inlet device of the blow molding machine. In this embodiment, a first detection element is added. Only when the first detection element detects that the stroke of the movable member 610 has reached the first specified stroke will the piston rod of the drive cylinder 620 automatically retract, and the preform stopper 510 be inserted into the preform inlet channel 300 to prevent the subsequent bottle preforms 10 from continuing to move. This configuration can prevent preforms 10 with a small degree of misalignment from being blown out of the preform inlet channel 300, which does not affect the preform feeding process, thus helping to ensure the preform feeding efficiency of the preform feeding device of the blow molding machine.

[0031] It should be noted that, in the embodiments of the present invention, the first detection element is a magnetic detection switch. Of course, in other embodiments of the present invention, the first detection element can also be selected from other types of sensors according to actual needs.

[0032] Optionally, the air pressure of the drive cylinder 620 can be set to 2 bar to 3 bar. The thrust of the drive cylinder 620 must be less than the value protected by the torque limiter of the preform feeding device of the blow molding machine, so as to avoid the excessive thrust of the drive cylinder 620 affecting the normal operation of the preform feeding device of the blow molding machine.

[0033] Optionally, the first specified stroke is 2.5mm-3mm. Specifically, the specified stroke can be 2.5mm, 2.51mm, 2.52mm, 2.53mm, 2.54mm, 2.55mm, 2.56mm, 2.57mm, 2.58mm, 2.59mm, 2.6mm, 2.61mm, 2.62mm, 2.63mm, 2.64mm, 2.65mm, 2.66mm, 2.67mm, 2.68mm, 2.69mm, 2.7mm, 2.71mm, 2.72mm, 2.73mm, 2.7... The specified stroke lengths are 4mm, 2.75mm, 2.76mm, 2.77mm, 2.78mm, 2.79mm, 2.8mm, 2.81mm, 2.82mm, 2.83mm, 2.84mm, 2.85mm, 2.86mm, 2.87mm, 2.88mm, 2.89mm, 2.9mm, 2.91mm, 2.92mm, 2.93mm, 2.94mm, 2.95mm, 2.99mm, 2.97mm, 2.98mm, 2.99mm, and 3mm. Of course, the first specified stroke can also be any other value within the range of 2.5mm-3mm, and is not limited to the examples listed above. Understandably, if the first specified stroke is set too small, preforms 10 with a small degree of misalignment that do not affect the preform feeding process will be blown out of the preform feeding channel 300. Conversely, if the first specified stroke is set too large, preforms 10 with a large degree of misalignment that affect the preform feeding process will cause preform overload. In this embodiment, the first specified stroke is controlled between 2.5mm and 3mm. This avoids preforms 10 with a small degree of misalignment that do not affect the preform feeding process from being blown out of the preform feeding channel 300, thus ensuring the preform feeding efficiency of the preform feeding device of the blow molding machine. At the same time, it ensures that preforms 10 with a large degree of misalignment that affect the preform feeding process are stably discharged from the preform feeding channel 300, avoiding preform overload.

[0034] It should be noted that, in other embodiments of the present invention, the size of the first specified stroke can be selected according to actual needs and is not limited to the above-mentioned limitations.

[0035] Optionally, the telescopic mechanism 600 also includes a counter, which records the number of times the first detection element is triggered. When the number of times the first detection element is triggered reaches a specified number within a first specified time period, the preform feeding device of the blow molding machine stops. It is understood that during the operation of the preform feeding device of the blow molding machine, preform misalignment should be considered an occasional fault. If preform misalignment occurs too frequently within a certain period, it indicates structural damage to the preform feeding device of the blow molding machine, such as misalignment of the preform feeding star wheel 400, the left preform feeding seat 100, and the right preform feeding seat 200, requiring shutdown for maintenance. In this embodiment, a counter is added to record the number of times the first detection element is triggered, and the preform feeding device of the blow molding machine stops when the number of times the first detection element is triggered reaches a specified number within a first specified time period. This enables the preform feeding device of the blow molding machine to automatically stop when a component malfunctions, facilitating user maintenance. Further optionally, the first specified time period is 30 minutes, and the specified number of triggers is 5. It is understandable that setting the first specified duration and the specified number of times too short will increase the probability of misjudgment, while setting them too long will prevent the feeding device from stopping quickly when a component malfunctions. In this embodiment, the first specified duration is 30 minutes and the specified number of times is 5, which ensures the accuracy of the judgment, reduces the probability of misjudgment, and allows for quick shutdown when a component malfunctions in the feeding device, facilitating maintenance by the staff. Of course, in other embodiments of the present invention, the first specified duration and the specified number of times can be adjusted according to actual needs and are not limited to the examples above.

[0036] It should be noted that the control logic of the counter, the first detection element, and the drive cylinder 620 can be selected based on existing technologies in the field of automatic control, and there is no need to describe or limit the control logic of the counter, the first detection element, and the drive cylinder 620 here.

[0037] Optionally, the telescopic mechanism 600 also includes a second detection element (not shown in the figure). The second detection element is used to detect the stroke of the piston rod. When the stroke of the piston rod reaches a second specified stroke, the second detection element can be triggered. After the triggering time of the second detection element reaches the second specified time, the piston rod of the drive cylinder 620 automatically extends, and the preform stopper 510 leaves the preform inlet channel 300 to release the subsequent preform 10 to continue moving. It can be understood that by setting the second detection element, after the triggering time of the second detection element reaches the second specified time, the piston rod of the drive cylinder 620 automatically extends, and the preform stopper 510 leaves the preform inlet channel 300 to release the subsequent preform 10 to continue moving, it is possible to ensure that after the skewed preform 10 is blown out of the preform inlet channel 300, the movable part 610 returns to the position aligned with the notch 310 to prepare for the compression of the subsequent skewed preform 10. At the same time, the preform stopper 510 leaves the preform inlet channel 300 to release the subsequent preform 10 to continue moving, ensuring the normal operation of the preform feeding process.

[0038] Further optionally, the second specified duration is 4 to 6 seconds. Specifically, the second specified duration can be 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, or 5.9 seconds. Of course, the second specified duration can also be selected from other values ​​within the range of 4 to 6 seconds according to actual needs, and is not limited to the examples above. Understandably, if the second specified duration is too short, the piston rod of the drive cylinder 620 may automatically extend before the skewed preform 10 has been blown out of the preform inlet channel 300, causing the movable part 610 to return to its flush position under the push of the piston rod, thus increasing the risk of preform overload. If the second specified duration is too long, the movable part 610 and the preform stopper 510 may not reset for a period of time after the skewed preform 10 has been blown out of the preform inlet channel 300, reducing the preform feeding efficiency of the preform feeding device of the blow molding machine. In this embodiment, controlling the second specified duration between 4 and 6 seconds ensures that the movable part 610 and the preform stopper 510 reset a short time after the skewed preform 10 has been blown out of the preform inlet channel 300, which helps to ensure the preform feeding efficiency of the preform feeding device of the blow molding machine.

[0039] It should be noted that, in the embodiments of the present invention, the second detection element is a magnetic detection switch. Of course, in other embodiments of the present invention, the second detection element can also be selected from other types of sensors according to actual needs.

[0040] It should be noted that, in other embodiments of the present invention, the size of the second specified duration can be selected according to actual needs and is not limited to the above-mentioned limitations.

[0041] refer to Figures 1-3 As shown, a blow-through nozzle 700 is installed at the end of the right preform inlet 200 near the telescopic mechanism 600. It is understood that, since the notch 310 is located between the right preform inlet 200 and the preform inlet star wheel 400, the installation of the blow-through nozzle 700 at the end of the right preform inlet 200 near the telescopic mechanism 600 ensures that any preforms 10 that become misaligned during the preform inlet process are blown out of the preform inlet channel 300. Optionally, another blow-through nozzle 700 can be added above the preform inlet channel 300 at the position corresponding to the notch 310. Thus, through the airflow from the two blow-through nozzles 700, it can be further ensured that any preforms 10 that become misaligned during the preform inlet process are blown out of the preform inlet channel 300. The specific structure of the blow-through nozzle 700 and the connection method of the air path can be selected according to actual needs; therefore, the relevant parameters of the blow-through nozzle 700 are not limited here.

[0042] refer to Figures 1-3As shown, the preform blocking mechanism 500 includes a mounting base 520 and a preform blocking drive 530. The mounting base 520 has a through hole. The preform blocking drive 530 is mounted on the mounting base 520, and the preform blocking member 510 is mounted on the power output end of the preform blocking drive 530 and passes through the through hole. Understandably, during actual operation, when the first detection element detects that the stroke of the moving member 610 has reached the first specified stroke, the piston rod of the drive cylinder 620 automatically retracts, and the preform blocking drive 530 drives the preform blocking member 510 to move within the through hole and insert into the preform inlet channel 300 to prevent subsequent preforms 10 from continuing to move. By setting the preform blocking drive 530, the preform blocking member 510 can be stably inserted into the preform inlet channel 300 during operation to prevent the movement of subsequent preforms 10, thus avoiding the phenomenon of the blow-off nozzle 700 blowing out the subsequently moving preforms 10. The mounting base 520 facilitates the installation of the blank-blocking drive component 530, and the perforation serves to guide the blank-blocking component 510, preventing the blank-blocking component 510 from becoming skewed.

[0043] It should be noted that, in an alternative embodiment of the present invention, the telescopic mechanism 600 may not include the drive cylinder 620, but instead adopts a structure in which a telescopic spring or telescopic rod connects to the movable part 610. This can also achieve the function of the tilted preform 10 moving away from the preform feeding star wheel 400 under the action of the tooth tip of the gear 410 so that the movable part 610 can retract.

[0044] It should be noted that, in an alternative embodiment of the present invention, the blank-blocking mechanism 500 may not include the blank-blocking drive member 530, but instead is provided with a linkage mechanism, in which the blank-blocking member 510 is linked with the movable member 610 when the movable member 610 retracts so that the blank-blocking member 510 extends into the blank-entry channel 300.

[0045] refer to Figures 1-3 As shown, the preform feeding device of the blow molding machine also includes a guard plate 800, which surrounds the preform feeding star wheel 400 and is located radially outside the preform feeding star wheel 400. A preform delivery channel 810 is defined between the guard plate 800 and the preform feeding star wheel 400. It can be understood that by setting the guard plate 800, a preform delivery channel 810 is formed between the guard plate 800 and the preform feeding star wheel 400, ensuring that the preform 10 can be stably transported to the next station.

[0046] This invention also discloses a blow molding machine, including the preform feeding device and frame 900 described above, with the preform feeding device mounted on the frame 900. Because of the preform feeding device described above, when the preform 10 gets stuck on the tip of the tooth 410 of the preform feeding star wheel 400, on the one hand, the preform blocking mechanism 500 can prevent subsequent preforms 10 from continuing to move; on the other hand, blowing air can quickly blow towards the stuck preform 10, causing it to disengage from the preform feeding star wheel 400, thus avoiding preform overload in the blow molding machine and reducing the probability of sudden equipment stoppage.

[0047] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A preform feeding device of a bottle blowing machine, characterized by comprising: The application relates to a bottle feeding device of a bottle blowing machine, which comprises the following parts: a left embryo feeding base (100) and a right embryo feeding base (200), which are arranged at intervals and define an embryo feeding channel (300), one of the left embryo feeding base (100) and the right embryo feeding base (200) is provided with a bottle blowing air nozzle (700), and the embryo feeding channel (300) has a gap (310); an embryo feeding star wheel (400) provided with a plurality of teeth (410), part of the teeth (410) are located in the embryo feeding channel (300), and the embryo feeding star wheel (400) can push the bottle embryo (10) in the embryo feeding channel (300) to move when the embryo feeding star wheel (400) rotates; an embryo blocking mechanism (500) having an embryo blocking piece (510) capable of extending into the embryo feeding channel (300) from the gap (310) to block the movement of the bottle embryo (10); a telescopic mechanism (600) having a movable piece (610) arranged corresponding to the gap (310); the skewed bottle embryo (10) can move towards the direction away from the embryo feeding star wheel (400) under the action of the tooth tips of the teeth (410) to make the movable piece (610) retract, meanwhile, the embryo blocking piece (510) is inserted into the embryo feeding channel (300) to block the continuous movement of the subsequent bottle embryo (10), and the bottle blowing air nozzle (700) can blow the skewed bottle embryo (10) out of the embryo feeding channel (300); the telescopic mechanism (600) further comprises a driving cylinder (620) and a first detection piece, the piston rod of the driving cylinder (620) is connected with the movable piece (610), the first detection piece is used for detecting the stroke of the movable piece (610), when the stroke of the movable piece (610) reaches a first specified stroke, the piston rod of the driving cylinder (620) automatically retracts, and the embryo blocking piece (510) is inserted into the embryo feeding channel (300) to block the continuous movement of the subsequent bottle embryo (10); the first specified stroke is 2.5mm-3mm; the embryo blocking mechanism (500) comprises a mounting seat (520) provided with a through hole; an embryo blocking driving piece (530) mounted on the mounting seat (520), the embryo blocking piece (510) is mounted on the power output end of the embryo blocking driving piece (530) and passes through the through hole; the bottle feeding device of the bottle blowing machine further comprises a guard plate (800) arranged around the embryo feeding star wheel (400) and located on the radial outside of the embryo feeding star wheel (400), and the guard plate (800) and the embryo feeding star wheel (400) define a bottle embryo moving channel (810).

2. The preform feeding apparatus of a bottle blowing machine according to claim 1, characterized by The telescopic mechanism (600) further comprises a counter used for recording the number of times that the first detection piece is triggered, when the number of times that the first detection piece is triggered reaches a specified number within a first specified time length, the bottle feeding device of the bottle blowing machine stops.

3. The preform feeding apparatus of a bottle blowing machine according to claim 1, wherein The telescopic mechanism (600) further comprises a second detection member for detecting the stroke of the piston rod, the second detection member being triggered when the stroke of the piston rod reaches a second specified stroke, and the piston rod of the drive cylinder (620) automatically extends and the embryo blocking member (510) leaves the embryo inlet channel (300) to release the subsequent bottle embryo (10) to continue moving after the second detection member is triggered for a second specified time length.

4. The preform feeding apparatus of claim 3, wherein The second specified time length is 4-6 seconds.

5. The preform feeding apparatus of a bottle blowing machine according to claim 1, wherein The right embryo inlet seat (200) is provided with the bottle blowing gas nozzle (700) at one end close to the telescopic mechanism (600).

6. A bottle blowing machine, characterized by The embryo inlet device and frame (900) comprising the bottle blowing machine as claimed in any one of claims 1-5, wherein the bottle blowing machine is installed on the frame (900).

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