Blanking limiting device of injection blow molding machine
By designing a feeding limit device for the injection blow molding machine, the combination of an arc-shaped rubber pad and a limit rod is used to restrict the movement of the bottle body, and the bottles are automatically arranged by a conveyor belt. This solves the problem of inaccurate bottle feeding and achieves an efficient and low-cost automated feeding process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-03
AI Technical Summary
During the injection blow molding process, the bottle body is prone to falling off the demolding slot or tipping over on the conveyor belt, which requires manual or mechanical adjustment of the bottle body position later, increasing production steps and costs.
The feeding limit device of the injection blow molding machine includes a fixing component, a limiting component, a driving component, and a receiving component. Through the coordinated movement of the turntable, the discharge plate, and the flip plate, the bottle is accurately positioned and aligned. The combination of the arc-shaped rubber pad and the limiting rod restricts the movement of the bottle, and the bottle is automatically arranged by the conveyor belt.
It improves the accuracy and efficiency of material feeding, reduces manual intervention, and lowers production costs.
Smart Images
Figure CN223961708U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of injection molding machine feeding technology, and in particular to a feeding limit device for an injection molding machine. Background Technology
[0002] Three-station injection blow molding machines are widely used in the manufacture of various plastic bottles. The injection blow molding machine first performs injection molding on the preform, then heats the preform and blows it into a bottle. After blowing is completed, a cooling operation is performed to wait for the bottle body to be formed. The bottle body is then removed from the injection blow molding machine to complete the production of the plastic bottle.
[0003] During demolding, a guide rod carries the demolding base horizontally away from the demolding station, thus removing the plastic bottle from the preform mandrel. Then, a drive motor rotates the demolding platen, causing the plastic bottle, which is held in the demolding slot, to rotate 90 degrees, changing from a horizontal to a vertical position with the bottom facing down, and placing it on the transmission device. Through the combination of the linear motion of the demolding base and the rotational motion of the demolding platen, the molded plastic bottle is removed from the preform mandrel and rotated to the designated placement angle.
[0004] However, during this process, bottles may fall from the demolding slot or tip over when placed on the conveyor belt. In other words, after production from the injection blow molding machine, the bottles may not fall accurately onto the conveyor track, requiring manual or mechanical stacking or adjustment of their positions, thus adding an extra production step. Therefore, this process needs improvement. Utility Model Content
[0005] To improve the accuracy of material feeding, this application provides a material feeding limit device for an injection blow molding machine.
[0006] The material discharge limiting device for an injection blow molding machine provided in this application adopts the following technical solution:
[0007] A material discharge limiting device for an injection blow molding machine includes an injection blow molding machine body and a discharge station. A turntable is connected to the injection blow molding machine body, and several bottle inner molds are laterally connected to the side wall of the turntable. The discharge station includes a discharge plate and a flip plate. The discharge plate is slidably connected to the injection blow molding machine body, and the flip plate is rotatably connected to the discharge plate. The flip plate is provided with a slot for clamping workpieces. The material discharge limiting device includes a fixing component, a limiting component, a driving component, and a receiving component. The fixing component is disposed in the slot, the limiting component is movably mounted on the flip plate, and the driving component is mounted on the flip plate and connected to both the fixing component and the limiting component. The receiving component is mounted on the injection blow molding machine body and is linked with the discharge plate.
[0008] By adopting the above technical solution, after four bottles in the same batch are blown into shape, the turntable drives them to the discharge station, where the bottle mouth is directly above the slot. The turntable then descends, pressing the bottle mouth into the slot through the inner mold of the bottle body, with the fixing component initially restricting the movement of the bottle. The discharge plate moves the flap away from the blown-injection machine body, horizontally removing the bottle from the inner mold. At this time, the drive component moves the limiting component to the side where the bottle mouth is away from the flap, and engages with the flap to further restrict the movement of the bottle. The flap then flips from vertical to horizontal, allowing the bottle to enter the receiving component. When the discharge plate moves the flap closer to the blown-injection machine body, the drive component drives the limiting component to disengage from the flap and reset, while simultaneously driving the fixing component to push the bottle mouth out of the slot. At the same time, as the discharge plate retracts, it drives the receiving component to align the four bottles, ensuring a smooth unloading process. This reduces the need for manual labor, improving unloading efficiency while lowering costs.
[0009] Optionally, the fixing component includes an arc-shaped rubber pad and a mounting ear plate. The arc-shaped rubber pad is installed in the slot, and the outer peripheral wall of the arc-shaped rubber pad is in contact with the inner wall of the slot. The mounting ear plate is located at both ends of the arc-shaped rubber pad in the circumferential direction. The slot is provided with a square groove near the top wall of the flip plate, and the side wall of the mounting ear plate is in contact with the inner wall of the square groove.
[0010] By adopting the above technical solution, when the turntable lowers the bottle, the inner mold of the bottle presses the bottle mouth into the slot, causing the arc-shaped rubber pad and the mounting ear plate to undergo elastic deformation. The squeezing force generated by the arc-shaped rubber pad on the bottle mouth can initially restrict the movement of the bottle. When the discharge plate moves the flip plate away from the injection blow molding machine body, the bottle is moved horizontally from the inner mold of the bottle body under the action of the friction force applied by the arc-shaped rubber pad.
[0011] Optionally, the bottom of the card slot is provided with a square notch.
[0012] By adopting the above technical solution, part of the arc-shaped rubber pad will be squeezed into the square notch, reducing the opposing force exerted by the arc-shaped rubber pad on the bottle mouth.
[0013] Optionally, the mounting ear plate is made of the same material as the arc-shaped rubber pad, both being rubber; the mounting ear plate and the arc-shaped rubber pad are integrally formed; the mounting ear plate is connected to the inner wall of the square groove by adhesive.
[0014] By adopting the above technical solution, during installation, the arc-shaped rubber pad only needs to be coated with adhesive on the mounting ear plate and bonded to the inner wall of the square groove. The position of the arc-shaped rubber pad is fixed, but it has the freedom of deformation.
[0015] Optionally, the limiting component includes a limiting rod and a locking block. The length direction of the limiting rod is parallel to the length direction of the flip plate, and an arc-shaped groove corresponding to the locking slot is formed on the side wall of the limiting rod. The driving component is connected to the two end walls in the length direction of the limiting rod. The locking block is installed at both ends in the length direction of the side wall of the limiting rod, and a locking slot corresponding to the locking block is provided on the top wall of the flip plate near the locking slot. The locking block and the locking slot are both in the shape of a quadrangular pyramid.
[0016] Optionally, the driving component includes a lifting cylinder, a lifting rod, a rotary motor, and a rotating rod. A square hole is formed through the flap along its length. The lifting rod is inserted into the square hole. The lifting cylinder is mounted on two end walls along the length of the flap. The cylinder shaft of the lifting cylinder is connected to the end wall of the lifting rod. The lifting cylinder drives the lifting rod to reciprocate along the height direction of the flap. The rotating rod is rotatably connected to the end wall of the lifting rod via a rotating shaft. The rotary motor is mounted on the lifting rod. The motor shaft of the rotary motor is connected to the rotating rod. The rotary motor drives the rotating rod to rotate. The end of the rotating rod away from the lifting rod is connected to the end wall of the limiting rod.
[0017] Optionally, the bottom end of the square notch is connected to the square hole, a lifting block is installed on the lifting rod, the lifting block is inserted into the square notch, and the top wall of the lifting block can protrude from the top of the square notch to push the arc-shaped rubber pad to deform.
[0018] By adopting the above technical solution, after the flip plate carries the bottle body away from the inner mold of the bottle body, the rotary motor starts. The motor shaft of the rotary motor rotates, driving the limiting rod from the side of the flip plate near the injection blow molding machine body to directly above the flip plate. At this time, the locking block is aligned with the locking groove. The lifting cylinder starts, and the cylinder shaft of the lifting cylinder retracts, driving the lifting rod to descend. The descending lifting rod drives the limiting rod to descend until the locking block is fully inserted into the locking groove, limiting the position of the limiting rod and the flip plate. At this time, the inner wall of the arc-shaped groove and the inner wall of the arc-shaped rubber pad together restrict the bottle mouth, making it difficult for the bottle body to move. Subsequently, the flip plate flips from a vertical position to a horizontal position. The flip plate flips, driving the four bottles from a horizontal position to a vertical position and into the receiving container. During the flipping process, the limiting rod restricts the bottle body and the flip plate to maintain a relative position, ensuring the effect of material feeding. Once the bottle enters the receiving unit, the cylinder shaft of the lifting cylinder extends, driving the lifting rod to move away from the injection blow molding machine body. This translation of the lifting rod causes the limiting rod to move away from the flip plate, pulling the locking block out of the locking groove. Subsequently, the motor shaft of the rotary motor rotates in the opposite direction, causing the limiting rod to rotate to the side wall of the flip plate, unlocking the bottle opening. At this point, the cylinder shaft of the lifting cylinder continues to extend, driving the lifting rod to continue moving away from the injection blow molding machine body. This movement of the lifting rod drives the lifting block to move along the inner wall of the square notch towards the arc-shaped rubber pad until the top of the lifting block protrudes from the square notch and enters the locking groove. This causes the arc-shaped rubber pad to deform and pushes the bottle opening out of the locking groove, reducing the likelihood of the bottle failing to detach from the flip plate and ensuring efficient material feeding.
[0019] Optionally, the receiving component includes a mounting frame, a conveyor belt, a reference plate, and a movable plate. The mounting frame is mounted on the injection blow molding machine body, and the conveyor belt is disposed on the mounting frame. The length direction of the conveyor belt is parallel to the length direction of the flip plate. The reference plate and the movable plate are respectively disposed on both sides of the width direction of the conveyor belt. The reference plate is fixedly connected to the mounting frame, and the movable plate is slidably connected to the mounting frame.
[0020] Optionally, a slide rail is provided on the bottom wall of the mounting frame, the length direction of the slide rail is parallel to the width direction of the conveyor belt, a slider is slidably mounted on the slide rail, an L-shaped plate is mounted on the side wall of the slider, and the end of the L-shaped plate away from the slider is connected to the side wall of the movable plate; a right-angle plate is mounted on the side wall of the discharge plate, the right-angle plate is elastically connected to the slider by a first spring, and the mounting frame is elastically connected to the movable plate by a second spring, the first spring and the second spring are arranged in parallel, and the strength coefficient of the first spring is greater than the strength coefficient of the second spring.
[0021] By adopting the above technical solution, the flip plate flips from a vertical to a horizontal position, placing the bottle on the conveyor belt. The bottle may shift slightly as it leaves the flip plate. As the discharge plate gradually approaches the injection blow molding machine body, its movement causes the right-angle plate to move. This movement of the right-angle plate applies a pulling force to the first spring, moving it closer to the injection blow molding machine body. The first spring then applies a pulling force to the slider, causing it to tend to move closer to the machine body. The slider, L-shaped plate, and movable plate can be considered as a single unit. Simultaneously, the second spring applies a pulling force to the movable plate, moving it away from the machine body. Under the interaction of the first and second springs, the slider, L-shaped plate, and movable plate move towards the injection blow molding machine body along with the retraction of the discharge plate until the movable plate abuts against the four bottles, pressing them firmly against the reference plate and aligning them in a row. At this point, the conveyor belt starts, transporting the four aligned bottles away. This automatic workpiece alignment ensures efficient workpiece feeding. It reduces the need for manual labor, improving feeding efficiency while lowering costs.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. After four bottles in the same batch have been blown into shape, the turntable moves them to the discharge station, where the bottle neck is directly above the slot. The turntable then descends, pressing the bottle neck into the slot through the inner mold, initially restricting the bottle's movement. The discharge plate moves the flap away from the blown-injection machine body, horizontally removing the bottle from the inner mold. At this point, the drive mechanism moves the limiting component to the side where the bottle neck is away from the flap, engaging it with the flap to further restrict the bottle's movement. The flap then flips from vertical to horizontal, allowing the bottle to enter the receiving unit. When the discharge plate moves the flap closer to the blown-injection machine body, the drive mechanism disengages the limiting component from the flap and resets it, simultaneously pushing the bottle neck out of the slot. Simultaneously, as the discharge plate retracts, the receiving unit aligns the four bottles, ensuring a smooth unloading process. This reduces the need for manual labor, improving unloading efficiency while lowering costs.
[0024] 2. After the flapper pulls the bottle away from the inner mold, the rotary motor starts. The motor shaft rotates, moving the limiting rod from the side of the flapper closest to the injection blow molding machine body to directly above the flapper. At this point, the locking block aligns with the locking groove. The lifting cylinder starts, and its cylinder shaft retracts, driving the lifting rod downwards. The downward movement of the lifting rod causes the limiting rod to descend until the locking block is fully inserted into the locking groove, limiting the position of the limiting rod and the flapper. At this point, the inner wall of the arc-shaped groove and the inner wall of the arc-shaped rubber pad together restrict the bottle opening, making it difficult for the bottle to move. Subsequently, the flapper flips from vertical to horizontal, causing the four bottles to flip from horizontal to vertical and enter the receiving container. During the flipping process, the limiting rod keeps the bottles and the flapper in relative positions, ensuring the effective unloading. Once the bottle enters the receiving section, the cylinder shaft of the lifting cylinder extends, driving the lifting rod to move away from the main body of the injection blow molding machine. This translation of the lifting rod causes the limiting rod to move away from the flip plate, pulling the locking block out of the locking groove. Subsequently, the motor shaft of the rotary motor rotates in the opposite direction, causing the limiting rod to rotate to the side wall of the flip plate, releasing the bottle opening. At this point, the cylinder shaft of the lifting cylinder continues to extend, driving the lifting rod to continue moving away from the main body of the injection blow molding machine. This movement of the lifting rod drives the lifting block to move along the inner wall of the square notch towards the arc-shaped rubber pad until the top of the lifting block protrudes from the square notch and enters the locking groove. This causes the arc-shaped rubber pad to deform and pushes the bottle opening out of the locking groove, reducing the likelihood of the bottle failing to detach from the flip plate and ensuring efficient material feeding.
[0025] 3. The flip plate rotates from vertical to horizontal, placing the bottles onto the conveyor belt. As the bottles detach from the flip plate, they may shift slightly. As the discharge plate gradually approaches the injection blow molding machine body, its movement causes the right-angle plate to move. This movement of the right-angle plate applies a pulling force to the first spring, moving it closer to the injection blow molding machine body. The first spring then applies a pulling force to the slider, causing it to tend to move closer to the machine body. The slider, L-shaped plate, and movable plate can be considered as a single unit. Simultaneously, the second spring applies a pulling force to the movable plate, moving it away from the machine body. Under the interaction of the first and second springs, the slider, L-shaped plate, and movable plate move towards the injection blow molding machine body along with the retraction of the discharge plate until the movable plate abuts against the four bottles, pressing them firmly against the reference plate and aligning them in a row. At this point, the conveyor belt starts, transporting the four aligned bottles away. This automatic workpiece alignment ensures efficient workpiece feeding, reduces manual labor, and lowers costs while improving feeding efficiency. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the material feeding limit device of an injection blow molding machine according to an embodiment of this application.
[0027] Figure 2 This is a structural schematic diagram of the flap and fixing component in an embodiment of this application.
[0028] Figure 3 This is a schematic diagram of the structure of the flap and the driving component in an embodiment of this application.
[0029] Figure 4 This is a schematic diagram of the structure of the base plate and the movable plate in an embodiment of this application.
[0030] Figure 5 This is a schematic diagram of the structure of the first spring and the second spring in the embodiments of this application.
[0031] Explanation of reference numerals in the attached drawings: 1. Injection blow molding machine body; 2. Turntable; 3. Bottle inner mold; 4. Discharge station; 41. Discharge plate; 42. Flip plate; 43. Slot; 44. Square slot; 45. Square notch; 46. Square hole; 47. Snap-fit slot; 5. Fixing component; 51. Arc-shaped rubber pad; 52. Mounting ear plate; 6. Limiting component; 61. Limiting rod; 62. Arc-shaped slot; 63. Snap-fit block; 7. Driving component; 71. Lifting cylinder; 72. Lifting rod; 73. Rotating shaft; 74. Rotating rod; 75. Rotary motor; 76. Lifting block; 8. Receiving component; 81. Mounting frame; 82. Base plate; 83. Movable plate; 84. Slide rail; 85. Slider; 86. L-shaped plate; 87. Right angle plate; 88. First spring; 89. Second spring; 9. Conveyor belt. Detailed Implementation
[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0033] This application discloses a material discharge limiting device for an injection blow molding machine. (Refer to...) Figure 1 A material feeding limiting device for an injection blow molding machine includes an injection blow molding machine body 1, a turntable 2 connected to the injection blow molding machine body 1, and a plurality of bottle body inner molds 3 horizontally connected to the side wall of the turntable 2. In this embodiment, four bottle body inner molds 3 are provided on each side wall of the turntable 2. A material discharge station 4 is provided on one side of the injection blow molding machine body 1. The material discharge station 4 includes a material discharge plate 41 and a flip plate 42. The material discharge plate 41 is slidably connected to the injection blow molding machine body 1. A cylinder is provided between the material discharge plate 41 and the injection blow molding machine body 1 to drive the material discharge plate 41 away from or towards the injection blow molding machine body 1. The flip plate 42 is rotatably connected to the material discharge plate 41. The flip plate 42 is provided with a slot 43 for clamping workpieces. The rotation of the flip plate 42 is controlled by a motor.
[0034] The injection molding machine body 1 is equipped with a material discharge limiting device, which includes a fixing component 5, a limiting component 6, a driving component 7, and a receiving component 8. The fixing component 5 is disposed in the slot 43, the limiting component 6 is movably mounted on the flip plate 42, and the driving component 7 is mounted on the flip plate 42 and connected to the fixing component 5 and the limiting component 6 respectively. The receiving component 8 is mounted on the injection molding machine body 1 and is linked with the discharge plate 41.
[0035] After four bottles in the same batch have been blown into shape, the turntable 2 moves them to the discharge station 4, where the bottle mouth is directly above the slot 43. The turntable 2 then descends, pressing the bottle mouth into the slot 43 through the inner mold 3, with the fixing member 5 initially restricting the bottle's movement. The discharge plate 41 moves the flip plate 42 away from the blown-injection machine body 1, horizontally removing the bottle from the inner mold 3. At this time, the drive member 7 drives the limiting member 6 to move to the side where the bottle mouth is away from the flip plate 42, and the limiting member 6 engages with the flip plate 42 to further restrict the bottle's movement. The flip plate 42 then flips from vertical to horizontal, allowing the bottle to enter the receiving member 8. When the discharge plate 41 moves the flip plate 42 closer to the blown-injection machine body 1, the drive member 7 drives the limiting member 6 to disengage from the flip plate 42 and reset, while simultaneously driving the fixing member 5 to push the bottle mouth out of the slot 43. At the same time, when the discharge plate 41 retracts, it drives the receiving component 8 to align the four bottles, ensuring they are in a row and guaranteeing efficient workpiece feeding. This reduces the need for manual labor, improving feeding efficiency while lowering costs.
[0036] Reference Figure 2 and Figure 3 The fastener 5 includes an arc-shaped rubber pad 51, with one arc-shaped rubber pad 51 disposed in each slot 43. In a naturally relaxed state, the outer peripheral wall of the arc-shaped rubber pad 51 is in contact with the inner wall of the slot 43. A mounting ear plate 52 is disposed at each end of the arc-shaped rubber pad 51. The mounting ear plate 52 is made of the same material as the arc-shaped rubber pad 51, both being rubber, and is integrally formed with the arc-shaped rubber pad 51. A square groove 44 is provided in the slot 43 near the top wall of the flip plate 42, and the inner wall of the mounting ear plate 52 is glued to the square groove 44. A square notch 45 is provided at the bottom of the slot 43.
[0037] When the turntable 2 lowers the bottle, the inner mold 3 presses the bottle neck into the slot 43, causing the arc-shaped rubber pad 51 and the mounting ear plate 52 to undergo elastic deformation. Part of the arc-shaped rubber pad 51 is squeezed into the square notch 45. The squeezing force generated by the arc-shaped rubber pad 51 on the bottle neck can initially restrict the movement of the bottle. When the discharge plate 41 moves the flip plate 42 away from the injection blow molding machine body 1, the bottle is moved horizontally from the inner mold 3 under the action of the friction force applied by the arc-shaped rubber pad 51.
[0038] Reference Figure 2 and Figure 3The limiting component 6 includes a limiting rod 61, which is parallel to the length direction of the flap 42. An arc-shaped groove 62 corresponding to the slot 43 is formed on the side wall of the limiting rod 61. The driving component 7 is connected to the two end walls of the limiting rod 61 along its length. A locking block 63 is installed at each end of the side wall of the limiting rod 61 along its length. A locking groove 47 corresponding to the locking block 63 is provided on the top wall of the flap 42 near the slot 43. Both the locking block 63 and the locking groove 47 are quadrangular pyramidal in shape.
[0039] Reference Figure 2 and Figure 3 The driving component 7 includes a lifting cylinder 71, the housing of which is bolted to the two end walls of the flap 42 along its length. A lifting rod 72 is mounted on the cylinder shaft of the lifting cylinder 71. A square hole 46 is provided through the flap 42 along its length, and the lifting rod 72 is inserted into the square hole 46. The cylinder shaft of the lifting cylinder 71 is bolted to the end wall of the lifting rod 72. The lifting cylinder 71 drives the lifting rod 72 to reciprocate within the square hole 46 along the height direction of the flap 42. A rotating shaft 73 is installed on the end wall of the lifting rod 72. The lifting rod 72 is rotatably connected to the rotating rod 74 through the rotating shaft 73. A rotary motor 75 is also installed on the end wall of the lifting rod 72 through a plate. The motor shaft of the rotary motor 75 is bolted to the end of the rotating rod 74 near the lifting rod 72. The rotary motor 75 drives the rotating rod 74 to rotate around the rotating shaft 73. The end of the rotating rod 74 away from the lifting rod 72 is bolted to the end wall of the limiting rod 61.
[0040] Reference Figure 2 and Figure 3 The lifting rod 72 is also equipped with four lifting blocks 76. The bottom ends of the four square notches 45 are connected to the square holes 46. The lifting blocks 76 are inserted into the square notches 45. The top wall of the lifting blocks 76 can protrude from the top of the square notches 45 to push the arc-shaped rubber pad 51 to deform.
[0041] After the flip plate 42 causes the bottle to detach from the inner mold 3, the rotary motor 75 starts. The motor shaft of the rotary motor 75 rotates, causing the limiting rod 61 to move from the side of the flip plate 42 closest to the injection blow molding machine body 1 to directly above the flip plate 42. At this time, the locking block 63 is aligned with the locking groove 47. The lifting cylinder 71 starts, and the cylinder shaft of the lifting cylinder 71 retracts, driving the lifting rod 72 to descend. The descent of the lifting rod 72 causes the limiting rod 61 to descend until the locking block 63 is fully inserted into the locking groove 47, limiting the position of the limiting rod 61 and the flip plate 42. At this time, the inner wall of the arc groove 62 and the inner wall of the arc rubber pad 51 together restrict the bottle mouth, making it difficult for the bottle to move. Then the flip plate 42 flips from vertical to horizontal. The flip plate 42 flips, causing the four bottles to flip from horizontal to vertical and enter the receiving part 8. During the flipping process, the limiting rod 61 restricts the bottle and the flip plate 42 to maintain a relative position, ensuring the effect of material feeding.
[0042] After the bottle enters the receiving unit 8, the cylinder shaft of the lifting cylinder 71 extends and drives the lifting rod 72 to move away from the injection blow molding machine body 1. The lifting rod 72 moves horizontally, causing the limiting rod 61 to move horizontally away from the flip plate 42, and the locking block 63 is pulled out from the locking groove 47. Then, the motor shaft of the rotary motor 75 rotates in the opposite direction, causing the limiting rod 61 to rotate to the side wall of the flip plate 42, and the limiting rod 61 disengages from the flip plate 42 to unlock the bottle mouth. At this time, the cylinder shaft of the lifting cylinder 71 continues to extend, driving the lifting rod 72 to continue to move away from the injection blow molding machine body 1. The movement of the lifting rod 72 drives the lifting block 76 to move along the inner wall of the square notch 45 towards the arc-shaped rubber pad 51, until the top of the lifting block 76 protrudes from the square notch 45 and enters the locking groove 43, causing the arc-shaped rubber pad 51 to deform and push the bottle mouth out of the locking groove 43, reducing the possibility of the bottle body being difficult to disengage from the flip plate 42 and ensuring the material feeding effect.
[0043] Reference Figure 4 and Figure 5 The receiving component 8 includes a mounting frame 81, which is fixedly mounted on the injection molding machine body 1 by a plate. A conveyor belt 9 is mounted on the mounting frame 81, with its length parallel to the length of the flip plate 42. A reference plate 82 is mounted on the side of the conveyor belt 9 closest to the injection molding machine body 1 in its width direction, and the reference plate 82 is fixedly connected to the mounting frame 81 by bolts. A movable plate 83 is mounted on the side of the conveyor belt 9 furthest from the reference plate 82 in its width direction, and the movable plate 83 is slidably connected to the mounting frame 81. A slide rail 84 is bolted to the bottom wall of the mounting frame 81, with its length parallel to the width of the conveyor belt 9. A slider 85 is slidably mounted on the slide rail 84. An L-shaped plate 86 is mounted on the side wall of the slider 85, and the end of the L-shaped plate 86 furthest from the slider 85 is connected to the side wall of the movable plate 83. A right-angle plate 87 is installed on the side wall of the discharge plate 41. The right-angle plate 87 is elastically connected to the slider 85 by a first spring 88. The mounting bracket 81 is elastically connected to the movable plate 83 by a second spring 89. The first spring 88 and the second spring 89 are arranged in parallel, and the strength coefficient of the first spring 88 is greater than that of the second spring 89.
[0044] The flip plate 42 flips from a vertical position to a horizontal position, placing the bottle on the conveyor belt 9. The bottle may shift when it leaves the flip plate 42. As the discharge plate 41 gradually approaches the injection blow molding machine body 1, the movement of the discharge plate 41 causes the right-angle plate 87 to move. The movement of the right-angle plate 87 applies a pulling force to the first spring 88 in the direction of the injection blow molding machine body 1. The first spring 88 applies a pulling force to the slider 85, causing the slider 85 to tend to move closer to the injection blow molding machine body 1. The slider 85, the L-shaped plate 86, and the movable plate 83 can be considered as a single unit. Simultaneously, the second spring 89 applies a pulling force to the movable plate 83 in the direction away from the injection blow molding machine body 1. Under the interaction of the first spring 88 and the second spring 89, the slider 85, the L-shaped plate 86, and the movable plate 83 move towards the injection blow molding machine body 1 along with the retraction of the discharge plate 41, until the movable plate 83 abuts against the four bottles, pressing them firmly against the reference plate 82 for alignment, thus arranging the four bottles in a row. At this point, conveyor belt 9 starts, transporting the four bottles arranged in a row. It automatically aligns the workpieces, ensuring efficient material handling. This reduces the need for manual labor, improving material handling efficiency while lowering costs.
[0045] The implementation principle of the feeding limiting device of the injection blow molding machine in this embodiment is as follows: When the turntable 2 drives the bottle body on it to descend, the inner mold 3 of the bottle body presses the bottle mouth into the slot 43, causing the arc-shaped rubber pad 51 and the mounting ear plate 52 to undergo elastic deformation. Part of the arc-shaped rubber pad 51 is squeezed into the square notch 45. The squeezing force generated by the arc-shaped rubber pad 51 on the bottle mouth can initially limit the movement of the bottle body. When the discharge plate 41 drives the flip plate 42 to move away from the injection blow molding machine body 1, the bottle body is translated and taken out from the inner mold 3 under the action of the friction force applied by the arc-shaped rubber pad 51. After the bottle detaches from the inner mold 3, the motor shaft of the rotary motor 75 rotates, causing the limiting rod 61 to move from the side of the flip plate 42 closest to the injection blow molding machine body 1 to directly above the flip plate 42. The cylinder shaft of the lifting cylinder 71 retracts, driving the lifting rod 72 and the limiting rod 61 to descend until the locking block 63 is fully inserted into the locking groove 47, limiting the position of the limiting rod 61 and the flip plate 42. At this time, the inner wall of the arc groove 62 and the inner wall of the arc rubber pad 51 together restrict the bottle opening, making it difficult for the bottle to move. Subsequently, the flip plate 42 flips from vertical to horizontal, causing the four bottles to flip until the bottom of the bottles is placed on the conveyor belt 9. The lifting cylinder 71 drives the lifting rod 72 to move the limiting rod 61 away from the flip plate 42, and the motor shaft of the rotary motor 75 rotates in the opposite direction, causing the limiting rod 61 to rotate back and unlock the bottle. At this time, the lifting cylinder 71 continues to drive the lifting rod 72 to move away from the injection blow molding machine body 1. The top of the lifting block 76 pushes the arc-shaped rubber pad 51 to deform and push the bottle mouth out of the slot 43. As the discharge plate 41 gradually approaches the injection blow molding machine body 1, the movement of the discharge plate 41 drives the right-angle plate 87 to move. The movement of the right-angle plate 87 applies a pulling force to the first spring 88 in the direction of the injection blow molding machine body 1. The first spring 88 applies a pulling force to the slider 85, and the slider 85 tends to move closer to the injection blow molding machine body 1. The slider 85, the L-shaped plate 86 and the movable plate 83 can be regarded as a whole. At the same time, the second spring 89 applies a pulling force to the movable plate 83 in the direction away from the injection blow molding machine body 1. Under the interaction of the first spring 88 and the second spring 89, the slider 85, L-shaped plate 86, and movable plate 83 move towards the injection blow molding machine body 1 along with the retraction of the discharge plate 41, until the movable plate 83 abuts against the four bottles, pressing them firmly against the reference plate 82 for alignment, so that the four bottles are arranged in a row. At this time, the conveyor belt 9 starts and transports the four bottles arranged in a row away. Automatic alignment of the workpieces ensures effective workpiece feeding. This reduces the need for manual labor, improving feeding efficiency while lowering costs.
[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A material discharge limiting device for an injection blow molding machine, comprising an injection blow molding machine body (1) and a discharge station (4), wherein a turntable (2) is connected to the injection blow molding machine body (1), and a plurality of bottle body inner molds (3) are laterally connected to the side wall of the turntable (2), and the discharge station (4) comprises a discharge plate (41) and a flip plate (42), wherein the discharge plate (41) is slidably connected to the injection blow molding machine body (1), and the flip plate (42) is rotatably connected to the discharge plate (41), and the flip plate (42) is provided with a slot (43) for clamping the workpiece, characterized in that: The material feeding limiting device includes a fixing part (5), a limiting part (6), a driving part (7), and a receiving part (8). The fixing part (5) is set in the slot (43). The limiting part (6) is movably installed on the flip plate (42). The driving part (7) is installed on the flip plate (42) and is connected to the fixing part (5) and the limiting part (6) respectively. The receiving part (8) is installed on the injection blow molding machine body (1) and is linked with the discharge plate (41).
2. The material discharge limiting device for an injection blow molding machine according to claim 1, characterized in that: The fastener (5) includes an arc-shaped rubber pad (51) and a mounting ear plate (52). The arc-shaped rubber pad (51) is installed in the slot (43), and the outer peripheral wall of the arc-shaped rubber pad (51) is in contact with the inner wall of the slot (43). The mounting ear plate (52) is located at both ends of the arc-shaped rubber pad (51) in the circumferential direction. The slot (43) is provided with a square groove (44) near the top wall of the flip plate (42), and the side wall of the mounting ear plate (52) is in contact with the inner wall of the square groove (44).
3. The material discharge limiting device for an injection blow molding machine according to claim 2, characterized in that: The bottom of the slot (43) is provided with a square notch (45).
4. The material discharge limiting device for an injection blow molding machine according to claim 3, characterized in that: The mounting ear plate (52) is made of the same material as the arc-shaped rubber pad (51), both being made of rubber; the mounting ear plate (52) and the arc-shaped rubber pad (51) are integrally formed; the mounting ear plate (52) and the inner wall of the square groove (44) are connected by adhesive.
5. The material discharge limiting device for an injection blow molding machine according to claim 3, characterized in that: The limiting member (6) includes a limiting rod (61) and a locking block (63). The length direction of the limiting rod (61) is parallel to the length direction of the flip plate (42). An arc-shaped groove (62) corresponding to the locking groove (43) is opened on the side wall of the limiting rod (61). The driving member (7) is connected to the two end walls of the limiting rod (61) in the length direction. The locking block (63) is installed at both ends of the side wall of the limiting rod (61) in the length direction. A locking groove (47) corresponding to the locking block (63) is provided on the top wall of the flip plate (42) near the locking groove (43). The shapes of the locking block (63) and the locking groove (47) are both quadrangular pyramids.
6. The material discharge limiting device for an injection blow molding machine according to claim 5, characterized in that: The driving component (7) includes a lifting cylinder (71), a lifting rod (72), a rotary motor (75), and a rotating rod (74). A square hole (46) is provided through the flap (42) along its length. The lifting rod (72) is inserted into the square hole (46). The lifting cylinder (71) is mounted on two end walls along the length of the flap (42). The cylinder shaft of the lifting cylinder (71) is connected to the end wall of the lifting rod (72). The lifting rod (72) is driven to move back and forth along the height direction of the flap (42); the rotating rod (74) is rotatably connected to the end wall of the lifting rod (72) through the rotating shaft (73); the rotary motor (75) is installed on the lifting rod (72); the motor shaft of the rotary motor (75) is connected to the rotating rod (74); the rotary motor (75) drives the rotating rod (74) to rotate; the end of the rotating rod (74) away from the lifting rod (72) is connected to the end wall of the limiting rod (61).
7. The material discharge limiting device for an injection blow molding machine according to claim 6, characterized in that: The bottom end of the square notch (45) is connected to the square hole (46). A lifting block (76) is installed on the lifting rod (72). The lifting block (76) is inserted into the square notch (45). The top wall of the lifting block (76) can protrude from the top of the square notch (45) to push the arc-shaped rubber pad (51) to deform.
8. The material discharge limiting device for an injection blow molding machine according to claim 1, characterized in that: The receiving component (8) includes a mounting frame (81), a conveyor belt (9), a reference plate (82), and a movable plate (83). The mounting frame (81) is mounted on the injection blow molding machine body (1). The conveyor belt (9) is set on the mounting frame (81). The length direction of the conveyor belt (9) is parallel to the length direction of the flip plate (42). The reference plate (82) and the movable plate (83) are respectively set on both sides of the width direction of the conveyor belt (9). The reference plate (82) is fixedly connected to the mounting frame (81), and the movable plate (83) is slidably connected to the mounting frame (81).
9. The material discharge limiting device for an injection blow molding machine according to claim 8, characterized in that: The mounting frame (81) is provided with a slide rail (84) on its bottom wall. The length direction of the slide rail (84) is parallel to the width direction of the conveyor belt (9). A slider (85) is slidably mounted on the slide rail (84). An L-shaped plate (86) is installed on the side wall of the slider (85). The end of the L-shaped plate (86) away from the slider (85) is connected to the side wall of the movable plate (83). A right-angle plate (87) is installed on the side wall of the discharge plate (41). The right-angle plate (87) and the slider (85) are elastically connected by a first spring (88). The mounting frame (81) and the movable plate (83) are elastically connected by a second spring (89). The first spring (88) and the second spring (89) are arranged in parallel, and the strength coefficient of the first spring (88) is greater than that of the second spring (89).