A preform feeding mechanism for bottle blowing machine

Abstract

The present application relates to a preform feeding mechanism of a bottle blowing machine, including a frame, an arranging frame, a preform pushing mechanism, a spacing adjustment mechanism and a feeding mechanism. The frame is connected to a conveyor belt, and a plurality of mounting parts are sequentially arranged on the conveyor belt along the transmission direction of the conveyor belt, and the mounting parts are used to install the bottle preforms; the arranging frame is provided with an arranging channel, and the inlet and outlet of the arranging channel are respectively close to the conveyor belt and the bottle blowing machine; the preform pushing mechanism is used to remove the bottle preforms entering the inlet of the arranging channel from the mounting part, and drive the bottle preforms on the arranging frame to move toward one side of the spacing adjustment mechanism, and the spacing adjustment mechanism is used to adjust the spacing between adjacent bottle preforms during the movement, and the feeding mechanism moves the bottle preforms with the adjusted spacing into the bottle blowing mold. The whole process realizes the process operation of feeding the bottle preforms. Even if the operator has not loaded the bottle preforms on the mounting parts for a period of time, as long as there are bottle preforms on other mounting parts, the automatic feeding of the bottle preforms can be realized, which can improve the production efficiency of plastic bottles.

Description

Technical Field

[0001] The invention relates to the field of auxiliary equipment for bottle blowing machines, and in particular to a preform feeding mechanism for bottle blowing machines. Background Art

[0002] In the processing of plastic hollow containers, fully automatic hollow container forming machines are widely used because of their high speed, high efficiency and stable quality. However, automatic forming machines require that the feeding process of the preforms from the feeding device to the preform seat on the orbiting chain should also be automated. Since the preform feeding link is the pre-process link of automatic blow molding of containers, the efficiency and stability of the preform feeding have a great impact on the whole machine.

[0003] For a bottle blowing machine that can form multiple plastic bottles at one time, the bottle blowing mold inside has multiple cavities, so multiple bottle embryos need to be loaded during loading.

[0004] At present, the preform loading operation of the bottle blowing machine is mainly carried out by the operator manually installing the preform mouth of the bottle preform on the corresponding installation position of the bottle blowing mold one by one, so that the bottle preform is located in the corresponding cavity. The speed of adding the bottle preform is slow, which leads to low production efficiency of plastic bottles. Summary of the invention

[0005] In order to improve the production efficiency of plastic bottles, the present application provides a preform feeding mechanism for a bottle blowing machine.

[0006] The preform feeding mechanism of a bottle blowing machine provided in the present application adopts the following technical solution:

[0007] A preform feeding mechanism of a bottle blowing machine comprises a frame, an arranging frame, a preform pushing mechanism, a spacing adjustment mechanism and a feeding mechanism, wherein the frame is connected to a conveyor belt, and a plurality of mounting members are sequentially arranged on the conveyor belt along the conveying direction of the conveyor belt, and the mounting members are used for mounting the bottle preforms;

[0008] An arrangement channel is formed on the arrangement rack, the inlet and outlet of the arrangement channel are respectively close to the conveyor belt and the bottle blowing machine, the inlet of the arrangement channel is arranged in a flared shape, and a number of preforms at the bend of the conveyor belt enter the inlet of the arrangement channel. After the preforms enter the inlet of the arrangement channel, the arrangement channel is only used to accommodate the preform bodies of the preforms, and the preform mouths of the preforms face upwards and abut against the arrangement rack;

[0009] The lower preform pushing mechanism is used to remove the bottle preforms entering the inlet of the arrangement channel from the mounting piece, and drive the bottle preforms on the arrangement rack to move toward one side of the spacing adjustment mechanism. The spacing adjustment mechanism is used to drive several bottle preforms that have reached the specified position on the arrangement rack to continue to move forward, and adjust the spacing between adjacent bottle preforms during the movement. The feeding mechanism is used to move the several bottle preforms with adjusted spacing into several mold cavities of the bottle blowing mold.

[0010] By adopting the above technical solution, the operator installs the preforms on the mounting piece, and the conveyor belt moves the preforms on the mounting piece, and the preforms enter the arrangement channel in sequence. Then, the unloading preform pushing mechanism removes the preforms entering the entrance of the arrangement channel from the mounting piece, and drives the preforms on the arrangement rack to move toward one side of the spacing adjustment mechanism. The spacing adjustment mechanism drives several preforms that have reached the specified position on the arrangement rack to continue to move forward, and adjusts the spacing between adjacent preforms during the movement. Finally, the feeding mechanism moves several preforms with adjusted spacing into several mold cavities of the bottle blowing mold. The whole process realizes the process operation of preform feeding. Even if the operator has not loaded the preforms on the mounting piece for a period of time, as long as there are preforms on other mounting pieces, the preforms can be automatically fed, which can improve the production efficiency of plastic bottles.

[0011] Preferably, the mounting member includes a fixed block, a slider, a spring, a connecting rod, a top block and a mounting head, the fixed block is fixedly arranged on the conveyor belt, a slide groove is provided in the fixed block, the slider slides in the slide groove along the vertical direction, the spring is located in the slide groove, two ends of the spring are respectively abutted against the slider and the end wall of the slide groove, the spring is used to drive the slider to always move downward, the connecting rod is passed through the slider and moves synchronously with the slider, the top and bottom ends of the connecting rod extend to the upper and lower sides of the fixed block respectively, the top end of the connecting rod is fixedly connected to the top block, the bottom end of the connecting rod is fixedly connected to the mounting head, the mounting head is made of deformable material, and the mounting head is interference fit with the mouth of the bottle embryo.

[0012] By adopting the above technical solution, when the operator installs the preform, he only needs to put the preform mouth upward on the installation head, and the friction between the installation head and the inner wall of the preform mouth prevents the preform from falling.

[0013] Preferably, the lower embryo propulsion mechanism comprises a slope platform, a propulsion wheel and a driving member, wherein the slope platform is fixedly arranged on the frame, close to the entrance of the arrangement channel and arranged along the transmission direction of the bend of the conveyor belt, and an avoidance channel for only the connecting rod to pass through is provided on the slope platform, and the height positions of both ends of the slope platform gradually become lower, and when the connecting rod enters the avoidance channel, the top block abuts against the top surface of the slope platform and moves;

[0014] The driving member 1 is arranged on the frame and is used to drive the propulsion wheel to rotate around the vertical axis. The propulsion wheel is provided with a plurality of arc grooves matching the body of the bottle preform in the circumferential direction. The rotation speed of the propulsion wheel is the same as the transmission speed of the conveyor belt. The propulsion wheel is used to resist the bottle preform entering the entrance of the arrangement channel and send it forward. The friction force generated between the propulsion wheel and the body of the bottle preform is greater than the friction force between the mounting head and the mouth of the bottle preform.

[0015] When the preforms on the mounting block enter the arrangement channel, the top block abuts against the top surface of the slope platform, and the mounting head moves up to separate from the preforms.

[0016] By adopting the above technical solution, when the preform on the mounting block enters the arrangement channel, the top block abuts against the top surface of the slope platform. As the conveyor belt continues to move forward, the top block will move up along the top surface of the slope platform, thereby overcoming the elastic force of the spring and driving the mounting head to move up. At the same time, the propulsion wheel rotates to abut against the body of the preform, and the body of the preform will be located in the corresponding arc groove and abut against the inner wall of the arc groove. Since the friction force generated between the propulsion wheel and the body of the preform is greater than the friction force between the mounting head and the mouth of the preform, the height position of the preform remains unchanged, and the mounting head moves up until it is separated from the preform, completing the automatic separation of the preform and the mounting head; at the same time, during the rotation of the propulsion wheel, the preforms will be pushed forward one by one, thereby automatically realizing the forward movement of the preforms on the arrangement rack, and adjacent preforms will abut against each other and move forward continuously.

[0017] Preferably, the lower embryo advancing mechanism further includes a rotating member and a resistance plate, the connecting rod rotates around the vertical axis on the slider and the fixed block, the rotating member is used to drive the top block to rotate before the bottle preform approaches the entrance of the arrangement channel, the resistance plate is rotatably connected to the bottom end of the top block, and the resistance plate abuts on the slope platform instead of the top block.

[0018] By adopting the above technical solution, after the rotating member drives the top block to rotate, the top block will drive the mounting head and the bottle preform to rotate. Since the bottle preform will stop rotating after the propulsion wheel abuts against the bottle preform, the mounting head still has a tendency to rotate, so the mounting head will rotate simultaneously during the upward movement process, thereby helping the mounting head to better detach from the bottle preform.

[0019] Preferably, the rotating part is a friction belt, which is fixed on the frame and located on one side of the inlet of the slope platform. The length direction of the friction belt is parallel to the transmission direction of the conveyor belt, and the friction belt is abutted by the passing top block.

[0020] By adopting the above technical solution, before the abutment plate abuts against the slope platform, the top block can pass through the friction belt and abut against the friction belt, thereby realizing automatic rotation of the top block.

[0021] Preferably, a plurality of tooth grooves are evenly formed on the outer wall of the top block in the circumferential direction, and a tooth surface matching the tooth grooves is formed on the side surface of the friction belt facing the top block, and when the top block passes through the friction belt, the tooth surface and the tooth grooves mesh with each other.

[0022] By adopting the above technical solution, since the surface of the friction belt will be worn after long-term use, the contact probability between the top block and the friction belt will become smaller when the top block passes through the friction belt, resulting in the top block not being able to rotate well; the cooperation between the tooth surface and the tooth groove can increase the contact area between the top block and the friction belt, and when the top block passes through the friction belt, the top block can rotate better under the action of the friction belt.

[0023] Preferably, the spacing adjustment mechanism comprises an infrared sensor, a second driving member, a scissor-type telescopic frame and a plurality of first cylinders, the scissor-type telescopic frame is composed of a plurality of scissor-type units hinged in sequence, the scissor-type unit is composed of two rods hinged to each other in the middle, the middle of the scissor-type unit at one end of the scissor-type telescopic frame is hinged on the frame, and the second driving member is used to drive the scissor-type telescopic frame to extend and retract;

[0024] A plurality of first cylinders are sequentially distributed along a telescopic direction parallel to the scissor-type telescopic frame, the first cylinders slide on the frame along the telescopic direction parallel to the scissor-type telescopic frame, the plurality of first cylinders are respectively arranged at the middle hinged positions of a plurality of adjacent scissor-type units, and the piston rods of the first cylinders extend vertically downward; the piston rods of the plurality of first cylinders respectively correspond to a plurality of bottle preforms, when the scissor-type telescopic frame is in a retracted state, the piston rods of the plurality of first cylinders respectively face a plurality of bottle preforms that have reached designated positions on the arrangement frame, and when the piston rods of the first cylinders extend, the piston rods of the first cylinders extend into the mouth of the bottle preforms; the infrared sensor is fixedly arranged on the arrangement frame, and is used to control the operation of the driving member 2 and the first cylinder after detecting that the bottle preforms have reached the designated position.

[0025] By adopting the above technical solution, the scissor-type telescopic frame is initially in a retracted state, and then waits for the preforms to arrive at the designated position after being arranged. After the infrared sensor detects that the preforms arrive at the designated position, the piston rod of the first cylinder is controlled to extend, so that the piston rod of the first cylinder extends into the preform mouth, and then the second drive scissor-type telescopic frame is controlled to extend. At this time, the piston rod of the first cylinder will drive the preforms to continue to move along the arranging frame, and finally the adjacent preforms reach an equal distance, which is convenient for the subsequent feeding mechanism to move the several preforms with adjusted distances into the several mold cavities of the blowing mold.

[0026] The technical effects of the present invention are mainly reflected in the following aspects:

[0027] 1. The present invention realizes the process operation of feeding bottle preforms by arranging a conveyor belt, an arranging rack, a preform pushing mechanism, a spacing adjustment mechanism and a feeding mechanism. Even if the operator does not load the bottle preforms on the mounting parts for a period of time, as long as there are bottle preforms on other mounting parts, the bottle preforms can be automatically fed, which can improve the production efficiency of plastic bottles;

[0028] 2. The present invention provides a lower embryo propulsion mechanism. After the preforms on the mounting block enter the arrangement channel, the top block abuts against the top surface of the slope platform. As the conveyor belt continues to move forward, the top block moves up along the top surface of the slope platform, thereby overcoming the elastic force of the spring and driving the mounting head to move up. At the same time, the propulsion wheel rotates to abut against the body of the preform, and the body of the preform is located in the corresponding arc groove and abuts against the inner wall of the arc groove. Since the friction force generated between the propulsion wheel and the body of the preform is greater than the friction force between the mounting head and the mouth of the preform, the height position of the preform remains unchanged, and the mounting head moves up until it is separated from the preform, completing the automatic separation of the preform and the mounting head; at the same time, the propulsion wheel will push the preforms forward one by one during the rotation process, thereby automatically realizing the forward movement of the preforms on the arrangement rack, and adjacent preforms will abut against each other and move forward continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the coordination of a conveyor belt, a plurality of mounting parts, an arrangement rack and a lower embryo pushing mechanism.

[0031] Figure 3 It is a cross-sectional view of the mounting member of the embodiment of the present application.

[0032] Figure 4 It is a structural schematic diagram of the spacing adjustment mechanism and the feeding mechanism of the embodiment of the present application.

[0033] Figure 5 It is a structural schematic diagram of the spacing adjustment mechanism and the feeding mechanism from another angle in the embodiment of the present application.

[0034] Description of reference numerals: 1, frame; 11, conveyor belt; 2, mounting member; 21, fixing block; 211, slideway; 22, slider; 23, spring; 24, connecting rod; 25, top block; 26, mounting head; 261, limiting ring; 3, arrangement frame; 31, arrangement channel; 4, lower embryo propulsion mechanism; 41, slope platform; 411, avoidance channel; 42, propulsion wheel; 421, arc groove; 43, first motor; 44, friction Wiping belt; 45, abutment plate; 5, spacing adjustment mechanism; 51, infrared sensor; 52, scissor-type telescopic frame; 521, rod body; 53, first cylinder; 54, second driving member; 541, second motor; 542, synchronous belt; 543, moving block; 544, synchronous wheel; 6, feeding mechanism; 61, feeding table; 611, positioning groove; 62, first driving slide; 63, second cylinder; 7, bottle embryo; 8, bottle blowing machine. DETAILED DESCRIPTION

[0035] The following combination Figure 1-Figure 5 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0036] The embodiment of the present application discloses a preform feeding mechanism of a bottle blowing machine.

[0037] Reference Figure 1 A preform feeding mechanism of a bottle blowing machine in this embodiment includes a frame 1, an arranging frame 3, a lower preform pushing mechanism 4, a spacing adjustment mechanism 5 and a feeding mechanism 6. A conveyor belt 11 is connected to the frame 1 for transmission. The conveyor belt 11 is unidirectionally transmitted. A plurality of mounting members 2 are sequentially arranged on the conveyor belt 11 along the transmission direction of the conveyor belt 11. The mounting members 2 are used for mounting the bottle preform 7.

[0038] Reference Figure 1 and Figure 2 An arrangement channel 31 is formed on the arrangement frame 3. The inlet and outlet of the arrangement channel 31 are respectively close to the conveyor belt 11 and the bottle blowing machine 8. The inlet of the arrangement channel 31 is set in a flared shape. The inlet of the arrangement channel 31 is for a number of preforms 7 at the bend of the conveyor belt 11 to enter. After the preforms 7 enter the inlet of the arrangement channel 31, the arrangement channel 31 is only used to accommodate the preform bodies of the preforms 7. The preform mouths of the preforms 7 face upward and abut against the arrangement frame 3.

[0039] Reference Figure 1 The lower preform pushing mechanism 4 is used to remove the bottle preform 7 entering the inlet of the arrangement channel 31 from the mounting member 2, and drive the bottle preform 7 on the arrangement frame 3 to move toward the side of the spacing adjustment mechanism 5. The spacing adjustment mechanism 5 is used to drive the bottle preforms 7 that have reached the specified position on the arrangement frame 3 to continue to move forward, and adjust the spacing between adjacent bottle preforms 7 during the movement. The feeding mechanism 6 is used to move the bottle preforms 7 with the adjusted spacing into the mold cavities of the bottle blowing mold.

[0040] Reference Figure 1 , the operator installs the preform 7 on the mounting member 2, and the conveyor belt 11 moves the preform 7 on the mounting member 2, and the preform 7 enters the arrangement channel 31 in sequence, and then the preform pushing mechanism 4 removes the preform 7 entering the entrance of the arrangement channel 31 from the mounting member 2, and drives the preform 7 on the arrangement frame 3 to move toward the side of the spacing adjustment mechanism 5, and the spacing adjustment mechanism 5 drives the preforms 7 that have reached the specified position on the arrangement frame 3 to continue to move forward, and adjusts the spacing between adjacent preforms 7 during the movement, and finally the feeding mechanism 6 moves the preforms 7 with the adjusted spacing into the mold cavities of the bottle blowing mold. The whole process realizes the process operation of feeding the preform 7. Even if the operator does not load the preform 7 on the mounting member 2 for a period of time, as long as there are preforms 7 on other mounting members 2, the preform 7 can be automatically fed, which can improve the production efficiency of plastic bottles.

[0041] Reference Figure 2 and Figure 3The mounting member 2 includes a fixed block 21, a slider 22, a spring 23, a connecting rod 24, a top block 25 and a mounting head 26. The fixed block 21 is fixedly arranged on the conveyor belt 11. A slide groove 211 is provided in the fixed block 21. The slider 22 slides in the slide groove 211 along the vertical direction. The spring 23 is located in the slide groove 211. The two ends of the spring 23 respectively abut on the top surface of the slider 22 and the top wall of the slide groove 211. The spring 23 always drives the slider 22 to move downward until it abuts on the bottom wall of the slide groove 211. The connecting rod 24 is arranged on the slider 22 and moves synchronously with the slider 22. The top and bottom ends of the connecting rod 24 extend to the upper and lower sides of the fixed block 21 respectively. The top end of the connecting rod 24 is fixedly connected to the top block 25, and the bottom end of the connecting rod 24 is fixedly connected to the mounting head 26. The mounting head 26 is made of deformable materials such as rubber or silicone. The mounting head 26 has an interference fit with the embryo mouth of the bottle embryo 7.

[0042] Reference Figure 2 and Figure 3 The mounting head 26 is similar to the piston structure on a syringe, and a fixed limiting ring 261 is sleeved on the top of the mounting head 26. When the operator mounts the preform 7, the preform 7 is sleeved on the mounting head 26 with the mouth of the preform facing upward until the preform 7 abuts against the limiting ring 261. The friction between the mounting head 26 and the inner wall of the mouth of the preform 7 prevents the preform 7 from falling.

[0043] Reference Figure 2 The lower embryo propulsion mechanism 4 includes a slope platform 41, a propulsion wheel 42 and a driving member 1. The slope platform 41 is fixedly arranged on the frame 1. The slope platform 41 is close to the entrance of the arrangement channel 31 and is arranged along the transmission direction of the turning part of the conveyor belt 11. The slope platform 41 is provided with an avoidance channel 411 for only the connecting rod 24 to pass through. The height positions of both ends of the slope platform 41 gradually become lower. When the connecting rod 24 enters the avoidance channel 411, the top block 25 abuts against the top surface of the slope platform 41 and moves.

[0044] Reference Figure 2 The first driving member is a first motor 43, which is fixedly arranged on the frame 1. The output shaft of the first motor 43 is arranged vertically upward and coaxially fixed on the propulsion wheel 42, which is used to drive the propulsion wheel 42 to rotate unidirectionally around the vertical axis. The propulsion wheel 42 is provided with a plurality of arc grooves 421 matching the body of the preform 7 around the circumferential direction. The rotation speed of the propulsion wheel 42 is the same as the transmission speed of the conveyor belt 11. The propulsion wheel 42 is used to resist the preform 7 entering the inlet of the arrangement channel 31 and send it forward. The friction force generated between the propulsion wheel 42 and the body of the preform 7 is greater than the friction force between the mounting head 26 and the mouth of the preform 7.

[0045] Reference Figure 2 When the preform 7 on the mounting block enters the arrangement channel 31 , the top block 25 abuts against the top surface of the slope platform 41 , and the mounting head 26 moves upward to separate from the preform 7 .

[0046] Reference Figure 2 When the preform 7 on the mounting block enters the arrangement channel 31, the top block 25 abuts against the top surface of the slope platform 41. As the conveyor belt 11 continues to move forward, the top block 25 will move up along the top surface of the slope platform 41, thereby overcoming the elastic force of the spring 23 and driving the mounting head 26 to move up. At the same time, the propulsion wheel 42 rotates to abut against the body of the preform 7, and the body of the preform will be located in the corresponding arc groove 421 and abut against the inner wall of the arc groove 421. Since the friction force generated between the propulsion wheel 42 and the body of the preform 7 is greater than the friction force between the mounting head 26 and the mouth of the preform 7, the height position of the preform 7 remains unchanged, and the mounting head 26 moves up until it is separated from the preform 7, thereby completing the automatic separation of the preform 7 and the mounting head 26; at the same time, during the rotation of the propulsion wheel 42, the preforms 7 entering the arrangement channel 31 one by one are pushed forward, automatically realizing the forward movement of the preforms 7 on the arrangement rack 3, and adjacent preforms 7 abut against each other and move forward continuously.

[0047] Reference Figure 2 The lower embryo pushing mechanism 4 further includes a rotating member and a stop plate 45. The connecting rod 24 rotates on the slider 22 and the fixed block 21 around the vertical axis. The rotating member is used to drive the top block 25 to rotate before the preform 7 approaches the entrance of the arrangement channel 31. The stop plate 45 is rotatably connected to the bottom end of the top block 25. When the connecting rod 24 enters the avoidance channel 411, the stop plate 45 replaces the top block 25 and abuts on the slope platform 41.

[0048] Reference Figure 2 After the rotating member drives the top block 25 to rotate, the top block 25 will drive the mounting head 26 and the bottle preform 7 to rotate. Since the bottle preform 7 will stop rotating after the propulsion wheel 42 abuts against the bottle preform 7, the mounting head 26 still has a tendency to rotate. Therefore, the mounting head 26 will rotate at the same time during the upward movement, thereby helping the mounting head 26 to better detach from the bottle preform 7.

[0049] Reference Figure 2 The rotating member is a friction belt 44, which is fixedly arranged on the frame 1 and located at one side of the entrance of the slope platform 41. The length direction of the friction belt 44 is parallel to the transmission direction of the transmission belt 11, and the friction belt 44 is abutted by the passing top block 25. Before the abutment plate 45 abuts on the slope platform 41, the top block 25 can pass through the friction belt 44 and abut against the friction belt 44, thereby realizing the automatic rotation of the top block 25.

[0050] Reference Figure 2The outer wall of the top block 25 is uniformly provided with a plurality of tooth grooves along the circumferential direction, and the side surface of the friction belt 44 facing the top block 25 is provided with a tooth surface matching the tooth grooves. When the top block 25 passes through the friction belt 44, the tooth surface and the tooth grooves mesh with each other. Since the friction belt 44 will wear out after long-term use, the contact probability between the top block 25 and the friction belt 44 will decrease when the top block 25 passes through the friction belt 44, resulting in the top block 25 not being able to rotate well; the coordination between the tooth surface and the tooth groove can increase the contact area between the top block 25 and the friction belt 44, and when the top block 25 passes through the friction belt 44, the top block 25 can rotate better under the action of the friction belt 44.

[0051] Reference Figure 1 , Figure 4 and Figure 5 The spacing adjustment mechanism 5 includes an infrared sensor 51, a second driving member 54, a scissor-type telescopic frame 52 and a plurality of first cylinders 53. The scissor-type telescopic frame 52 is composed of a plurality of scissor-type units hinged in sequence, and the scissor-type unit is composed of two rods 521 hinged to each other in the middle. The scissor-type telescopic frame 52 is located between the conveyor belt 11 and the bottle blowing machine 8. The middle part of the scissor-type unit of the scissor-type telescopic frame 52 near one end of the conveyor belt 11 is hinged on the frame 1, and the second driving member 54 is used to drive the scissor-type telescopic frame 52 to extend and retract.

[0052] Reference Figure 4 and Figure 5 The second driving member 54 includes a second motor 541, a synchronous belt 542, a moving block 543 and two synchronous wheels 544. The synchronous wheel 544 rotates on the frame 1, and the synchronous belt 542 is wound on the two synchronous wheels 544. The second motor 541 is fixed on the frame 1. The output shaft of the second motor 541 is coaxially fixed on one of the synchronous wheels 544. The moving block 543 slides on the frame 1 along the length direction of the arrangement frame 3. The moving block 543 has a tooth portion meshing with the synchronous belt 542, and the tooth portion meshes with the synchronous belt 542. The transmission direction of the synchronous belt 542 is parallel to the sliding direction of the moving block 543. The middle hinge of one of the scissor-type units on the scissor-type telescopic frame 52 is hinged on the moving block 543. By driving the output shaft of the second motor 541 to rotate, the synchronous belt 542 drives the moving block 543 to move, and the moving block 543 moves to drive the scissor-type telescopic frame 52 to telescope.

[0053] Reference Figure 4 and Figure 5 The first cylinders 53 are sequentially distributed along the extension direction parallel to the scissor-type telescopic frame 52. The first cylinders 53 slide on the frame 1 along the extension direction parallel to the scissor-type telescopic frame 52. The first cylinders 53 are respectively arranged at the middle hinge positions of the adjacent scissor-type units. The piston rods of the first cylinders 53 extend vertically downward, and the piston rods of the first cylinders 53 correspond to the preforms 7 respectively.

[0054] Reference Figure 4 and Figure 5 When the scissor-type telescopic frame 52 is in a retracted state, the piston rods of the first cylinders 53 are respectively facing the preforms 7 that have reached the designated position on the arrangement frame 3. When the piston rods of the first cylinders 53 extend, the piston rods of the first cylinders 53 extend into the preform openings of the preforms 7. The infrared sensor 51 is fixedly arranged on the arrangement frame 3. When the preforms 7 move to the designated position, the preforms 7 will block the infrared rays emitted by the infrared sensor 51. The infrared sensor 51 can detect that the preforms 7 have reached the designated position, and then control the operation of the second driving member 54 and the first cylinder 53.

[0055] Reference Figure 4 and Figure 5 The scissor-type telescopic frame 52 is initially in a retracted state, and then waits for the preforms 7 to arrive at the designated position after being arranged. After the infrared sensor 51 detects that the preforms 7 arrive at the designated position, the piston rod of the first cylinder 53 is controlled to extend, so that the piston rod of the first cylinder 53 extends into the preform mouth of the preform 7, and then the second driving scissor-type telescopic frame 52 is controlled to extend. At this time, the piston rod of the first cylinder 53 will drive the preforms 7 to continue to move along the arranging frame 3, and finally the adjacent preforms 7 reach an equal distance, which is convenient for the subsequent feeding mechanism 6 to move the preforms 7 with adjusted distances into the mold cavities of the bottle blowing mold.

[0056] Reference Figure 4 and Figure 5 The feeding mechanism 6 includes a driving assembly and a feeding platform 61. The length direction of the feeding platform 61 is parallel to the telescopic direction of the scissor-type telescopic frame 52. The feeding platform 61 is provided with a plurality of positioning grooves 611 matching with a plurality of blank openings on one side facing the arrangement frame 3. The driving assembly includes a first driving slide 62 and a second cylinder 63. The first driving slide 62 slides on the frame 1 along a direction parallel to the telescopic direction of the scissor-type telescopic frame 52. The second cylinder 63 is fixedly arranged on the first driving slide 62. The piston rod of the second cylinder 63 is fixed on the feeding platform 61. The second cylinder 63 drives the feeding platform 61 to move along a horizontal sliding direction perpendicular to the sliding direction of the first driving slide.

[0057] Reference Figure 4 and Figure 5 , the scissor-type telescopic frame 52 is extended, and after the spacing between the adjacent preforms 7 is equal, the positioning grooves 611 on the feeding platform 61 are facing the preforms 7, and the piston rod of the second cylinder 63 is driven to extend, and the feeding platform 61 moves toward the side of the arrangement frame 3, and the preform openings of the preforms 7 are embedded in the positioning grooves 611, and then the piston rod of the first cylinder 53 is driven to contract, so that the piston rod of the first cylinder 53 moves out of the preform opening, and then the first driving slide 62 moves toward the side of the bottle blowing machine 8, and the preforms 7 are moved to the designated mold cavity of the bottle blowing machine 8, and then the piston rod of the second cylinder 63 is contracted to separate the feeding platform 61 from the preforms 7.

[0058] Reference Figure 1 The entire device is controlled by a PLC controller. Since the equipment matched with the PLC controller is a common equipment and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described here.

[0059] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A preform feeding mechanism for a bottle blowing machine, characterized in that: The machine comprises a frame (1), an arranging frame (3), a preform pushing mechanism (4), a spacing adjustment mechanism (5) and a feeding mechanism (6); the frame (1) is connected to a conveyor belt (11) in a transmission manner; a plurality of mounting members (2) are arranged in sequence on the conveyor belt (11) along the transmission direction of the conveyor belt (11); the mounting members (2) are used for mounting bottle preforms (7); An arrangement channel (31) is formed on the arrangement frame (3), the inlet and outlet of the arrangement channel (31) are respectively close to the conveyor belt (11) and the bottle blowing machine (8), the inlet of the arrangement channel (31) is arranged in a flared shape, and the inlet of the arrangement channel (31) is used for a plurality of bottle preforms (7) at the bend of the conveyor belt (11) to enter, and after the bottle preforms (7) enter the inlet of the arrangement channel (31), the arrangement channel (31) is only used to accommodate the body of the bottle preforms (7), and the mouth of the bottle preforms (7) abuts against the arrangement frame (3) with the mouth of the bottle preforms facing upwards; The lower preform pushing mechanism (4) is used to remove the bottle preform (7) entering the inlet of the arrangement channel (31) from the mounting member (2), and drive the bottle preform (7) on the arrangement frame (3) to move toward the side of the spacing adjustment mechanism (5); the spacing adjustment mechanism (5) is used to drive a plurality of bottle preforms (7) that have reached a specified position on the arrangement frame (3) to continue to move forward, and adjust the spacing between adjacent bottle preforms (7) during the movement; the feeding mechanism (6) is used to move the plurality of bottle preforms (7) with the spacing adjusted into a plurality of mold cavities of the bottle blowing mold; The mounting member (2) comprises a fixed block (21), a slider (22), a spring (23), a connecting rod (24), a top block (25) and a mounting head (26); the fixed block (21) is fixedly arranged on the conveyor belt (11); a slide groove (211) is provided in the fixed block (21); the slider (22) slides in the slide groove (211) along a vertical direction; the spring (23) is located in the slide groove (211); two ends of the spring (23) are respectively abutted against the slider (22) and the end wall of the slide groove (211); The spring (23) is used to drive the slider (22) to always move downward. The connecting rod (24) is inserted into the slider (22) and moves synchronously with the slider (22). The top and bottom ends of the connecting rod (24) extend to the upper and lower sides of the fixed block (21) respectively. The top end of the connecting rod (24) is fixedly connected to the top block (25). The bottom end of the connecting rod (24) is fixedly connected to the mounting head (26). The mounting head (26) is made of a deformable material. The mounting head (26) is interference-fitted with the embryo mouth of the bottle embryo (7). The lower embryo propulsion mechanism (4) comprises a slope platform (41), a propulsion wheel (42) and a driving member, wherein the slope platform (41) is fixedly arranged on the frame (1), the slope platform (41) is close to the entrance of the arrangement channel (31) and is arranged along the transmission direction of the turning part of the conveyor belt (11), and an avoidance channel (411) is opened on the slope platform (41) for only the connecting rod (24) to pass through, and the height positions of the two ends of the slope platform (41) gradually become lower. When the connecting rod (24) enters the avoidance channel (411), the top block (25) moves against the top surface of the slope platform (41); The driving member 1 is arranged on the frame (1) and is used to drive the propulsion wheel (42) to rotate around the vertical axis direction. The propulsion wheel (42) is provided with a plurality of arc grooves (421) matching the body of the bottle preform (7) in the circumferential direction. The rotation speed of the propulsion wheel (42) is the same as the transmission speed of the conveyor belt (11). The propulsion wheel (42) is used to resist the bottle preform (7) entering the entrance of the arrangement channel (31) and send it forward. The friction force generated between the propulsion wheel (42) and the body of the bottle preform (7) is greater than the friction force between the mounting head (26) and the mouth of the bottle preform (7). When the preform (7) on the mounting block enters the arrangement channel (31), the top block (25) abuts against the top surface of the slope platform (41), and the mounting head (26) moves upward to separate from the preform (7).

2. The preform feeding mechanism of a bottle blowing machine according to claim 1, characterized in that: The lower embryo advancing mechanism (4) further comprises a rotating member and a contact plate (45); the connecting rod (24) is rotated on the slider (22) and the fixed block (21) around a vertical axis; the rotating member is used to drive the top block (25) to rotate before the preform (7) approaches the entrance of the arrangement channel (31); the contact plate (45) is rotatably connected to the bottom end of the top block (25); the contact plate (45) replaces the top block (25) and contacts the slope platform (41).

3. The preform feeding mechanism of a bottle blowing machine according to claim 2, characterized in that: The rotating member comprises a friction belt (44), the friction belt (44) is fixedly arranged on the frame (1), the friction belt (44) is located on one side of the entrance of the slope platform (41), the length direction of the friction belt (44) is parallel to the transmission direction of the transmission belt (11), and the friction belt (44) is abutted by the top block (25) passing by.

4. The preform feeding mechanism of a bottle blowing machine according to claim 3, characterized in that: The outer wall of the top block (25) is evenly provided with a plurality of tooth grooves in the circumferential direction, and the side surface of the friction belt (44) facing the top block (25) is provided with a tooth surface matching the tooth grooves, and when the top block (25) passes through the friction belt (44), the tooth surface and the tooth grooves mesh with each other.

5. The preform feeding mechanism of a bottle blowing machine according to claim 1, characterized in that: The spacing adjustment mechanism (5) comprises an infrared sensor (51), a second driving member (54), a scissor-type telescopic frame (52) and a plurality of first cylinders (53); the scissor-type telescopic frame (52) is composed of a plurality of scissor-type units hinged in sequence; the scissor-type unit is composed of two rods (521) whose middle parts are hinged to each other; the middle part of the scissor-type unit at one end of the scissor-type telescopic frame (52) is hinged to the frame (1); the second driving member (54) is used to drive the scissor-type telescopic frame (52) to extend and retract; A plurality of first cylinders (53) are sequentially distributed along a direction parallel to the extension and retraction direction of the scissor-type telescopic frame (52); the first cylinders (53) slide on the frame (1) along a direction parallel to the extension and retraction direction of the scissor-type telescopic frame (52); the plurality of first cylinders (53) are respectively arranged at the middle hinged positions of a plurality of adjacent scissor-type units; the piston rods of the first cylinders (53) extend vertically downward; the piston rods of the plurality of first cylinders (53) correspond to a plurality of preforms (7) respectively; when the scissor-type telescopic frame (52) is in a contracted state, the piston rods of the plurality of first cylinders (53) are respectively opposite to a plurality of preforms (7) that have reached a designated position on the arrangement frame (3); when the piston rods of the first cylinders (53) extend, the piston rods of the first cylinders (53) extend into the preform opening of the preforms (7); the infrared sensor (51) is fixedly arranged on the arrangement frame (3); after detecting that the preforms (7) have reached the designated position, the infrared sensor (51) is used to control the operation of the second driving member (54) and the first cylinder (53).

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