Feeding device of blow molding machine

Abstract

The feeding device of the blow molding machine comprises a feeding hopper, a rotating shaft is rotationally connected into the feeding hopper, the rotating shaft is connected with first stirring blades, the first stirring blades are in sliding fit with the rotating shaft in the length direction of the rotating shaft, the feeding hopper is connected with a moving assembly, and the moving assembly is used for driving the first stirring blades to be in sliding fit with the rotating shaft; the feeding hopper is connected with a rotating assembly. When the first stirring blades rotate, the moving assembly drives the first stirring blades to be in sliding fit with the rotating shaft in the length direction of the rotating shaft, so that the first stirring blades can stir materials in the feeding hopper at different height positions, the problem that the materials are not fully stirred due to the fact that the height positions of the stirring blades are fixed is avoided as much as possible, and the mixing uniformity of the materials is improved; the product quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of blow molding machines, in particular to a feeding device of a blow molding machine. BACKGROUND

[0002] PET bottles refer to bottles containing a plastic material called polyethylene terephthalate, or simply PET, which is a polymer produced by combining terephthalic acid and ethylene glycol. PET bottles have the characteristics of light weight, high transparency, impact resistance and not easy to break.

[0003] Currently, PET bottles are usually produced by blow molding machines. In the traditional feeding device of the blow molding machine, stirring blades are usually arranged in the feeding hopper to realize the stirring of the material. The stirring blades are driven to rotate in the feeding hopper by a motor to stir the material.

[0004] According to the above related technology, the height position of the stirring blade is fixed, and the material at different heights cannot be fully stirred, and the material in the feeding hopper is not uniformly mixed. SUMMARY

[0005] In order to improve the uniformity of the material in the feeding hopper, the present application provides a feeding device of a blow molding machine.

[0006] The feeding device of the blow molding machine provided by the present application adopts the following technical scheme: A feeding device of a blow molding machine, comprising a feeding hopper, the feeding hopper is used to communicate with the body of the blow molding machine, a rotating shaft is rotatably connected in the feeding hopper, the length direction of the rotating shaft is consistent with the depth direction of the feeding hopper, a first stirring blade is connected with the rotating shaft, the first stirring blade is slidingly fitted on the rotating shaft along the length direction of the rotating shaft, a moving assembly is connected with the feeding hopper, the moving assembly is used to drive the first stirring blade to slidingly fit on the rotating shaft, and a rotating assembly is connected with the feeding hopper, the rotating assembly is used to drive the rotating shaft to rotate.

[0007] By adopting the above technical scheme, the rotating assembly drives the rotating shaft to rotate, and then drives the first stirring blade to rotate, thereby realizing the stirring of the material in the feeding hopper. At the same time, the moving assembly drives the first stirring blade to slidingly fit on the rotating shaft along the length direction of the rotating shaft, so that the first stirring blade can stir the material in the feeding hopper at different height positions, thereby avoiding the problem of insufficient stirring of the material caused by the fixed height position of the stirring blade, improving the uniformity of the material, and improving the product quality.

[0008] Optionally, the rotating shaft is provided with a moving hole, the length direction of the moving hole is consistent with the length direction of the rotating shaft, the moving assembly comprises a threaded rod, a first motor and a sliding block, the threaded rod is rotationally connected in the moving hole, the first motor is connected to the rotating shaft, the output shaft of the first motor is in communication with one end of the threaded rod, the sliding block is threadedly sleeved on the threaded rod, and the sliding block is slidably connected in the moving hole along the length direction of the rotating shaft; the first stirring blade is connected to the sliding block.

[0009] By adopting the above technical scheme, the first motor drives the threaded rod to rotate, the sliding block slides in the moving hole along the length direction of the rotating shaft, and then drives the first stirring blade to move along the length direction of the rotating shaft, so as to facilitate the movement of the first stirring blade and reduce the insufficient stirring of the material in the feeding hopper caused by the fixed height position of the stirring blade.

[0010] Optionally, the rotating shaft is provided with a communication channel, the length direction of the communication channel is consistent with the length direction of the moving hole, the communication channel is communicated with a gas source, and the communication channel is communicated with a plurality of high-pressure nozzles, the gas outlet of the high-pressure nozzle faces the moving hole, and the high-pressure nozzle is used for cleaning the moving hole.

[0011] By adopting the above technical scheme, the communication channel is added, when in use, the gas source inputs gas into the communication channel, the gas is sprayed out through the high-pressure nozzle, and the threaded rod is cleaned to avoid the material accumulated in the moving hole from affecting the normal work of the moving assembly.

[0012] Optionally, the sliding block is connected with a brush piece at both ends along the length direction of the rotating shaft, and the brush piece is used to contact the surface of the threaded rod.

[0013] By adopting the above technical scheme, the brush piece is added, so that the brush piece cleans the surface of the threaded rod during the movement of the sliding block, and the material attached to the threaded rod is avoided to affect the movement of the sliding block.

[0014] Optionally, the rotating shaft is connected with a scraper, and the scraper is used to contact the inner wall of the feeding hopper.

[0015] By adopting the above technical scheme, when in use, the rotating shaft rotates, the scraper rotates with the rotating shaft, and the scraper contacts the inner wall of the feeding hopper, so as to scrape off the material attached to the inner wall of the feeding hopper, and further improve the sufficiency of material stirring.

[0016] Optionally, the scraper is connected to the rotating shaft through a connecting rod, the connecting rod is slidably fitted on the rotating shaft, the rotating shaft is connected with a pushing assembly, and the pushing assembly is used to push the connecting rod to be slidably fitted on the rotating shaft and drive the connecting rod to move away from or close to the inner wall of the feeding hopper.

[0017] By adopting the above technical scheme, when the inner wall of the feeding hopper needs to be cleaned, the pushing assembly pushes the connecting rod and drives the scraper to abut against the inner wall of the feeding hopper, so that the scraper can clean the inner wall of the feeding hopper. After cleaning, the pushing assembly pushes the connecting rod to move the scraper away from the inner wall of the feeding hopper, so as to avoid the continuous contact between the scraper and the inner wall of the feeding hopper and the abrasion caused thereby, and prolong the service life of the scraper.

[0018] Optionally, a sliding groove is formed in the rotating shaft, the connecting rod is arranged in the sliding groove, a ring groove is formed in the circumferential side of the rotating shaft, the ring groove is communicated with the sliding groove, the connecting rod is slidably fitted to the inner wall of the ring groove and the inner wall of the sliding groove, the pushing assembly comprises a pushing ring, a driving member and a reset member, two pushing rings are arranged, the two pushing rings are used to form a complete ring, the pushing ring is inserted into the ring groove through the ring groove, the driving member is used to drive the two pushing rings to move close to or away from each other, when the pushing rings move close to each other, the pushing rings are inserted into the ring groove, and the reset member is used to drive the scraper to abut against the inner wall of the feeding hopper.

[0019] By adopting the above technical scheme, when the scraper cleans the inner wall of the feeding hopper, the reset member drives the scraper to abut against the inner wall of the feeding hopper, so that the scraper can clean the inner wall of the feeding hopper. After cleaning, the driving member drives the two pushing rings to move close to each other, the pushing ring is inserted into the ring groove, the pushing ring pushes the connecting rod, the connecting rod is slidably fitted to the ring groove and the sliding groove, and the connecting rod drives the scraper to move away from the inner wall of the filter hopper. In this way, the connecting rod is pushed by the pushing ring to move away from the inner wall of the filter hopper, so as to avoid the continuous contact between the scraper and the inner wall of the filter hopper and the abrasion caused thereby, and prolong the service life of the scraper. The two pushing rings form a complete ring in the ring groove, so that the connecting rod is stably arranged in the sliding groove when the rotating shaft rotates, and the reset member drives the scraper to move close to the inner wall of the feeding hopper when cleaning is not needed.

[0020] Optionally, the reset member is a spring, one end of the spring is connected to the rotating shaft, and the other end of the spring is connected to the connecting rod. The spring pushes the connecting rod to move and drives the scraper to abut against the inner wall of the feeding hopper.

[0021] By adopting the above technical scheme, when the scraper moves away from the inner wall of the feeding hopper, the connecting rod presses the spring and causes the spring to deform. When the inner wall needs to be cleaned, the driving member drives the two pushing rings to move and move away from each other, the spring resets and drives the connecting rod to move and abut against the inner wall of the feeding hopper, thereby improving the cleaning effect of the scraper on the inner wall of the feeding hopper.

[0022] Optionally, the rotating shaft is connected with a second stirring blade, the second stirring blade is arranged at the position where the feeding hopper is communicated with the blow molding machine body, and the second stirring blade is a spiral stirring blade.

[0023] By adopting the technical scheme, the second stirring blade stirs the material arranged at the position where the hopper and the blow molding machine body are communicated, so that the material is prevented from being blocked at the position where the hopper and the blow molding machine body are communicated.

[0024] Optionally, the rotating assembly comprises a first gear, a second gear and a second motor, the first gear is sleeved on the rotating shaft, the second motor is connected to the feeding hopper, an output shaft of the second motor is connected to the second gear, and the first gear is engaged with the second gear.

[0025] By adopting the technical scheme, the second motor drives the second gear to rotate, the second gear drives the first gear to rotate, the first gear drives the rotating shaft to rotate, the first stirring blade, the scraper and the second stirring blade rotate with the rotating shaft, and then the material in the feeding hopper is stirred, so that the stirring effect is improved.

[0026] To sum up, the present application has at least one of the following beneficial technical effects: 1. The rotating assembly drives the rotating shaft to rotate, and then drives the first stirring blade to rotate, so that the material in the feeding hopper is stirred, at the same time, the moving assembly drives the first stirring blade to slide along the length direction of the rotating shaft and fit on the rotating shaft, so that the first stirring blade can stir the material in the feeding hopper at different height positions, the problem of insufficient stirring of the material caused by the fixed height position of the stirring blade is avoided, the mixing uniformity of the material is improved, and the product quality is improved; 2. The first motor drives the threaded rod to rotate, so that the sliding block slides in the moving hole along the length direction of the rotating shaft, and then drives the first stirring blade to move along the length direction of the rotating shaft, so that the movement of the first stirring blade is facilitated, and the insufficient stirring of the material in the feeding hopper caused by the fixed height position of the stirring blade is reduced; 3. The communication passage is additionally arranged, when in use, the gas source inputs gas into the communication passage, the gas is sprayed out through the high-pressure nozzle, and the threaded rod is cleaned, so that the material is prevented from being accumulated in the moving hole and affecting the normal work of the moving assembly. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view of the embodiment.

[0028] Figure 2 is a top view of the embodiment.

[0029] Figure 3 is a partial cross-sectional view of the embodiment Figure 2 in A-A direction.

[0030] Figure 4 is a partial cross-sectional view of the embodiment Figure 2 in A-A direction.

[0031] Figure 5 is a front view of the embodiment.

[0032] Figure 6 is a partial sectional view of the direction of B-B in this embodiment Figure 5

[0033] Figure 7 is a sectional view of the direction of C-C in this embodiment Figure 2

[0034] Figure 8 is an enlarged view of part D in this embodiment Figure 3

[0035] BRIEF DESCRIPTION OF REFERENCE NUMERALS: 100, feed hopper; 200, rotating shaft; 210, second stirring blade; 220, moving hole; 230, communication channel; 231, high-pressure nozzle; 232, air inlet channel; 240, connecting ring; 242, first channel; 243, air conveying pipe; 250, sliding groove; 260, ring groove; 270, mounting hole; 300, first stirring blade; 400, moving assembly; 410, first motor; 420, threaded rod; 430, sliding block; 500, rotating assembly; 510, first gear; 520, second gear; 530, second motor; 600, brush element; 610, mounting ring; 620, brush; 700, connecting rod; 710, moving rod; 800, pushing assembly; 810, pushing ring; 820, first air cylinder; 830, spring; 900, scraper. DETAILED DESCRIPTION

[0036] The application will be further described below in conjunction with the accompanying drawings. Figures 1-8 The application will be further described below in conjunction with the accompanying drawings.

[0037] The application discloses a feeding device of a blow molding machine. Referring to Figure 1 , Figure 2 and Figure 3 , the feeding device of the blow molding machine comprises a feed hopper 100, a rotating shaft 200, a first stirring blade 300 and a moving assembly 400. The feed hopper 100 is vertically arranged, and the bottom end of the feed hopper 100 is used for being in communication with the body of the blow molding machine. The length direction of the rotating shaft 200 is consistent with the vertical direction, the rotating shaft 200 is rotationally connected in the feed hopper 100, and the central axis of the rotating shaft 200 is collinear with the central axis of the feed hopper 100. The first stirring blade 300 is slidingly fitted in the rotating shaft 200 along the vertical direction, and the moving assembly 400 is used for driving the first stirring blade 300 to be slidingly fitted in the rotating shaft 200 along the vertical direction. The first stirring blade 300 can stir the material in the feed hopper 100 at different height positions, and the effect of improving the uniformity of the material mixing is improved.

[0038] Referring to Figure 3 and Figure 4 ​​​The bottom end of the rotating shaft 200 is connected with a second stirring blade 210, the second stirring blade 210 is arranged at the position where the feeding hopper 100 is communicated with the blow molding machine body, and the second stirring blade 210 is a spiral stirring blade. The top of the feeding hopper 100 is connected with a rotating assembly 500, the rotating assembly 500 is used for driving the rotating shaft 200 to rotate, the rotating assembly 500 comprises a first gear 510, a second gear 520 and a second motor 530, and the top end of the rotating shaft 200 penetrates through the inner wall of the top of the feeding hopper 100 along the length direction. The first gear 510 is sleeved on the top end of the rotating shaft 200, the central axis of the first gear 510 is collinear with the central axis of the rotating shaft 200, the second motor 530 is connected to the top of the feeding hopper 100, the output shaft of the second motor 530 is connected with the second gear 520, the central axis of the output shaft of the second motor 530 is collinear with the central axis of the second gear 520, and the first gear 510 is engaged with the second gear 520.

[0039] With reference to Figure 3 and Figure 4 , the rotating shaft 200 is provided with a moving hole 220, and the length direction of the moving hole 220 is consistent with the length direction of the rotating shaft 200. The moving assembly 400 comprises a first motor 410, a threaded rod 420 and a sliding block 430. The length direction of the threaded rod 420 is consistent with the vertical direction, and the threaded rod 420 is rotationally connected to the inner wall of the moving hole 220. The sliding block 430 is threadedly sleeved on the threaded rod 420, and the sliding block 430 is slidingly fitted to the inner wall of the moving hole 220 along the vertical direction. The first stirring blade 300 is connected to the sliding block 430. The first motor 410 drives the threaded rod 420 to rotate, so that the sliding block 430 moves in the moving hole 220, and in turn drives the first stirring blade 300 to move along the length direction of the rotating shaft 200, so that the first stirring blade 300 can stir the materials in the feeding hopper 100 at different height positions, and the mixing uniformity of the materials is improved.

[0040] With reference to Figure 5 and Figure 6 , the rotating shaft 200 is provided with two communication channels 230, the length direction of the communication channel 230 is consistent with the vertical direction, and the two communication channels 230 are arranged on the two sides of the moving hole 220. The communication channel 230 is communicated with a plurality of high-pressure nozzles 231, the plurality of high-pressure nozzles 231 are sequentially and spacedly arranged along the length direction of the communication channel 230, and the gas outlet of the high-pressure nozzle 231 faces the moving hole 220. The communication channel 230 is communicated with a gas supply source.

[0041] With reference to Figure 4 , Figure 6 and Figure 7The air supply source is communicated with the communication channel 230 through a connecting ring 240, the connecting ring 240 is sleeved at the top end of the rotating shaft 200, the connecting ring 240 is connected to the top of the feeding hopper 100, the connecting ring 240 is provided with a first channel 242, the first channel 242 is annular, and the first channel 242 is provided with an opening on one side of the inner circle of the connecting ring 240. The top end of the communication channel 230 is communicated with an air inlet channel 232, and the other end of the air inlet channel 232 is communicated with the first channel 242. The air supply source includes a pressure pump and a gas conveying pipe 243 (not shown in the figure), one end of the gas conveying pipe 243 is communicated with the first channel 242, and the other end of the gas conveying pipe 243 is communicated with the pressure pump. In use, the high-pressure nozzle 231 sprays high-pressure gas towards the moving hole 220, thereby cleaning the inside of the moving hole 220 and reducing the accumulation of materials in the moving hole 220.

[0042] With reference to Figure 3 and Figure 8 The brush piece 600 is connected to the slider 430 at both ends in the vertical direction. The brush piece 600 includes a mounting ring 610 and a brush 620, the center axis of the mounting ring 610 is collinear with the center axis of the threaded rod 420, and the mounting ring 610 is embedded at one end of the slider 430. One end of the brush 620 is connected to the mounting ring 610, and the other end of the brush 620 is in contact with the threaded rod 420. When the slider 430 moves, the brush piece 600 moves together with the slider 430 and keeps contact with the surface of the threaded rod 420, thereby cleaning the materials on the surface of the threaded rod 420. In this way, the materials adhering to the threaded rod 420 to affect the movement of the slider 430 can be avoided as much as possible, and the influence of the materials on the working of the moving assembly 400 is reduced.

[0043] With reference to Figure 4 and Figure 6 The rotating shaft 200 is connected with a connecting rod 700, the length direction of the connecting rod 700 is consistent with the radial direction of the rotating shaft 200, and one end of the connecting rod 700 away from the rotating shaft 200 is connected with a scraper 900 used for contacting the inner wall of the feeding hopper 100. The rotating shaft 200 is provided with a sliding groove 250, the sliding groove 250 is in the shape of a Chinese character “”, one end of the connecting rod 700 close to the rotating shaft 200 is connected with a moving rod 710, and the moving rod 710 is also in the shape of a Chinese character “” and is slidably fitted on the inner wall of the sliding groove 250 in the radial direction of the rotating shaft 200. The top end of the rotating shaft 200 is provided with a ring groove 260, and the center axis of the ring groove 260 is collinear with the center axis of the rotating shaft 200. The top end of the sliding groove 250 is communicated with the ring groove 260, and the top end of the moving rod 710 is slidably fitted on the inner wall of the ring groove 260 in the radial direction of the rotating shaft 200.

[0044] With reference to Figure 4The rotation shaft 200 is provided with a pushing assembly 800, and the pushing assembly 800 is used for pushing the moving rod 710 to move along the radial direction of the rotation shaft 200. The pushing assembly 800 comprises a pushing ring 810, a driving member and a reset member. The bottom end of the sliding groove is provided with a mounting hole 270, the length direction of the mounting hole 270 is consistent with the radial direction of the rotation shaft 200, and the connecting rod 700 is slidably connected to the inner wall of the mounting hole 270 along the radial direction of the rotation shaft 200. The reset member is a spring 830, the length direction of the spring 830 is consistent with the length direction of the connecting rod 700, one end of the spring 830 is connected to the inner wall of the mounting hole 270, and the other end of the spring 830 is connected to the connecting rod 700. The spring 830 pushes the connecting rod 700 to move and drives the scraper 900 to abut against the inner wall of the feeding hopper 100.

[0045] With reference to Figure 4 The pushing ring 810 is provided with two, and the pushing ring 810 is a semicircular ring. The two pushing rings 810 are respectively arranged on the two sides of the rotation shaft 200 and oppositely arranged, and the two pushing rings 810 are used for forming a complete circular arc. The driving member is a first cylinder 820, and the first cylinder 820 is provided with two. The first cylinder 820 is connected to the top of the feeding hopper 100, the length direction of the first cylinder 820 is consistent with the radial direction of the rotation shaft 200, and each pushing ring 810 is connected to the piston rod of each first cylinder 820. The pushing ring 810 is inserted into the rotation shaft 200 through the ring groove 260. When the pushing ring 810 is inserted into the ring groove 260, the moving rod 710 is embedded in the sliding groove and drives the scraper 900 to move away from the inner wall of the feeding hopper 100. The position of the scraper 900 can be adjusted according to whether the inner wall of the feeding hopper 100 needs to be cleaned, so as to avoid the abrasion caused by the long-time contact between the scraper 900 and the inner wall of the feeding hopper 100.

[0046] The implementation principle of the feeding device of the blow molding machine is as follows: in use, the rotating assembly 500 drives the rotation shaft 200 to rotate, so that the first stirring blade 300 and the second stirring blade 210 stir the material in the feeding hopper 100. At the same time, the first motor 410 drives the threaded rod 420 to rotate, so as to drive the sliding block 430 and the first stirring blade 300 to move along the vertical direction, so that the first stirring blade 300 can stir the material at different height positions, and the uniformity of the mixed material is improved.

[0047] When the sliding block 430 moves along the vertical direction, the gas source inputs the gas into the first channel 242, the gas enters the communication channel 230 through the gas inlet channel 232, the gas moves along the communication channel 230 and is sprayed into the moving hole 220 through the high-pressure nozzle 231, so as to reduce the material in the moving hole 220. At the same time, the bristle member 600 moves with the sliding block 430, the bristle member 600 cleans the threaded rod 420, so that the bristle member 600 cleans the surface of the threaded rod 420, reduces the situation that the material is adhered to the threaded rod 420, and improves the stability of the movement of the sliding block 430.

[0048] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A feeding device of a blow molding machine comprising a feeding hopper (100) for communicating with a blow molding machine body, characterized in that: The feeding hopper (100) is rotationally connected with a rotating shaft (200), the length direction of the rotating shaft (200) is consistent with the depth direction of the feeding hopper (100), the rotating shaft (200) is connected with a first stirring blade (300), the first stirring blade (300) is slidingly fitted on the rotating shaft (200) along the length direction of the rotating shaft (200), the feeding hopper (100) is connected with a moving assembly (400), the moving assembly (400) is used for slidingly fitting the first stirring blade (300) on the rotating shaft (200), and the feeding hopper (100) is connected with a rotating assembly (500), the rotating assembly (500) is used for driving the rotating shaft (200) to rotate.

2. A feeding device for a blow molding machine according to claim 1, characterized in that: The rotating shaft (200) is provided with a moving hole (220), the length direction of the moving hole (220) is consistent with the length direction of the rotating shaft (200), the moving assembly (400) comprises a threaded rod (420), a first motor (410) and a sliding block (430), the threaded rod (420) is rotationally connected in the moving hole (220), the first motor (410) is connected to the rotating shaft (200), the output shaft of the first motor (410) is in communication with one end of the threaded rod (420), the sliding block (430) is threadedly sleeved on the threaded rod (420), and the sliding block (430) is slidingly connected in the moving hole (220) along the length direction of the rotating shaft (200); the first stirring blade (300) is connected to the sliding block (430).

3. A feed means for a blow moulding machine according to claim 2, characterised in that: The rotating shaft (200) is provided with a communication channel (230), the length direction of the communication channel (230) is consistent with the length direction of the moving hole (220), the communication channel (230) is communicated with a gas source, the communication channel (230) is communicated with a plurality of high-pressure nozzles (231), the gas outlet of the high-pressure nozzle (231) faces the moving hole (220), and the high-pressure nozzle (231) is used for cleaning the moving hole (220).

4. A feeding device for a blow molding machine according to claim 2, characterized in that: The sliding block (430) is connected with a brush element (600) at both ends along the length direction of the rotating shaft (200), and the brush element (600) is used for contacting the surface of the threaded rod (420).

5. A feeding device for a blow molding machine according to claim 1, characterized in that: The rotating shaft (200) is connected with a scraper (900), and the scraper (900) is used for contacting the inner wall of the feeding hopper (100).

6. A feed means for a blow moulding machine according to claim 5, characterised in that: The scraper (900) is connected to the rotating shaft (200) through a connecting rod (700), the connecting rod (700) is slidingly fitted on the rotating shaft (200), the rotating shaft (200) is connected with a pushing assembly (800), the pushing assembly (800) is used for slidingly fitting the connecting rod (700) on the rotating shaft (200) and driving the connecting rod (700) to move away from or close to the inner wall of the feeding hopper (100).

7. A feed means for a blow moulding machine according to claim 6, characterised in that: The rotating shaft (200) is provided with a sliding groove (250), the connecting rod (700) is arranged in the sliding groove (250), the rotating shaft (200) is provided with an annular groove (260) on the side, the annular groove (260) is communicated with the sliding groove (250), the connecting rod (700) is slidably matched with the inner wall of the annular groove (260) and the inner wall of the sliding groove (250), the pushing assembly (800) comprises a pushing ring (810), a driving member and a reset member, two pushing rings (810) are arranged, the two pushing rings (810) can be used to form a whole ring, the pushing ring (810) is inserted into the rotating shaft (200) through the annular groove (260), the driving member is used for driving the two pushing rings (810) to move close to each other or move away from each other, when the pushing rings (810) move close to each other, the pushing rings (810) are inserted into the annular groove (260), and the reset member is used for driving the scraper (900) to abut against the inner wall of the feeding hopper (100).

8. A feed means for a blow moulding machine according to claim 7, characterised in that: The reset member is a spring (830), one end of the spring (830) is connected to the rotating shaft (200), and the other end of the spring (830) is connected to the connecting rod (700), the spring (830) pushes the connecting rod (700) to move and drives the scraper (900) to abut against the feeding hopper (100).

9. A feeding device for a blow molding machine according to claim 1, characterized in that: The rotating shaft (200) is connected with a second stirring blade (210), the second stirring blade (210) is arranged at the position where the feeding hopper (100) is communicated with the body of the blow molding machine, and the second stirring blade (210) is a spiral stirring blade.

10. A feeding device for a blow molding machine according to claim 1, characterized in that: The rotating assembly (500) comprises a first gear (510), a second gear (520) and a second motor (530), the first gear (510) is sleeved on the rotating shaft (200), the second motor (530) is connected to the feeding hopper (100), the output shaft of the second motor (530) is connected with the second gear (520), and the first gear (510) is engaged with the second gear (520).

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