Preform lifting and rotating mechanism and bottle preform heating device

Abstract

The present application relates to the technical field of blow molding, for example, to a preform lifting and rotating mechanism and a bottle preform heating device. The preform lifting and rotating mechanism includes a holder (41), a preform insertion component (42), a lifting drive component (43), and a rotation drive component (45). The holder (41) is fixed to a carrier disk (22) of a carrier mechanism (2). The carrier disk (22) can rotate the holder (41). The preform insertion component (42) includes a lifting platform (421) and a preform insertion member (422). The lifting platform (421) can slide on the holder (41). The preform insertion member (422) is rotatably attached to the lifting platform (421), the lifting drive component (43) is configured to drive the lifting platform (421) to raise and lower relative to the holder (41) so that the preform insertion member (422) can be inserted into the bottle preform and the preform body of the bottle preform can be inserted into the heating barrel (31), and the rotation drive component (45) is configured to drive the rotation of the preform insertion member (422).

Description

[Technical Field]

[0001] This application claims priority to a Chinese patent application bearing application number 202310276314.3, filed with the China Patent Office on March 21, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of blow molding, and relates to, for example, a preform lifting and rotating mechanism and a bottle preform warming device. [Background technology]

[0003] In the packaging industry, a large number of PET bottles are usually required for filling, and blow molding is the primary method for producing PET bottles due to its simple process and low cost. In a PET bottle blow molding production line, the bottle preforms are first heated in a bottle preform heating box, heated to a certain temperature, and then blown into PET bottles in a blow molding machine.

[0004] The bottle preforms of the related art require a bottle preform lifting mechanism to insert the bottle preforms into a heating box, and when the bottle preforms are being heated in the heating box, the bottle preforms must be rotated by a rotation mechanism to prevent localized overheating of the bottle preforms. The bottle preform rotation mechanism and bottle preform lifting mechanism of the bottle preform heating device of the related art are two independent mechanisms that occupy a large space and result in high equipment costs.

[0005] Therefore, there is an urgent need for a preform lifting and rotating mechanism to solve the above problems. Summary of the Invention [Means for solving the problem]

[0006] In the first aspect, a preform lifting / rotating mechanism configured to drive the lifting / lowering and rotation of a bottle preform, a holder fixed to a carrier disk of a carrier mechanism that can rotate the carrier disk; a preform insertion component including a platform and a preform insertion member, the platform being slidably attached to the holder and the preform insertion member being pivotally attached to the platform; an elevation drive component configured to drive the elevation platform to elevate and lower relative to the holder so that the preform insertion member can be inserted into a bottle preform and a preform body of the bottle preform can be inserted into a warming barrel; a rotational drive component configured to drive rotation of the preform insert member. Provide a preform lifting and rotating mechanism.

[0007] In aspect 2, a heating mechanism and the preform lifting and rotating mechanism described above, wherein the preform lifting and rotating mechanism is configured to insert a bottle preform into a heating barrel of the heating mechanism and drive the bottle preform to rotate within the heating barrel; A bottle preform heating device is provided. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a structural schematic diagram of a preform with a handle according to an embodiment of the present application. [Figure 2] 1 is a structural schematic diagram of a bottle preform heating device according to an embodiment of the present application. [Figure 3] FIG. 2 is a structural schematic diagram of a preform supply module according to an embodiment of the present application. [Figure 4] FIG. 2 is a structural schematic diagram of a carrier mechanism according to an embodiment of the present application. [Figure 5]1 is a structural schematic diagram of a preform lifting / rotating mechanism according to an embodiment of the present application attached to a carrier disk. [Figure 6] 1 is a partial schematic diagram showing a preform lifting / rotating mechanism according to an embodiment of the present application attached to a carrier disk. [Figure 7] FIG. 2 is a partial cross-sectional view of a preform lifting / rotating mechanism according to an embodiment of the present application. [Figure 8] 1 is a structural schematic diagram of a guide rail according to an embodiment of the present application. [Figure 9] FIG. 2 is a partial schematic view of a guide rail according to an embodiment of the present application. [Figure 10] 1 is a structural schematic diagram of a heating mechanism and an air-cooling mechanism according to an embodiment of the present application. [Figure 11] FIG. 2 is a structural schematic diagram of an air bleed box according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0009] In the description of this application, unless otherwise clearly specified or limited, the terms "connection," "connection," and "fixed" should be interpreted broadly, and may refer to, for example, a fixed connection, a detachable connection, an integral molding, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, internal communication between two elements, or an interaction between two elements. Those skilled in the art may understand the specific meaning of the above terms in this application as the case may be.

[0010] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include direct contact between the first and second features, or may include contact between the first and second features via another feature between them rather than direct contact. Furthermore, a first feature being "above," "above," and "on the upper surface" of a second feature may include being directly above and diagonally above the second feature, or may simply mean that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," and "on the lower surface" of a second feature may include being directly below and diagonally below the second feature, or may simply mean that the horizontal height of the first feature is lower than that of the second feature.

[0011] In the description of this application, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are merely used to facilitate the description and simplify operations based on the orientations or positional relationships shown in the drawings, and do not indicate or imply that the indicated devices or elements necessarily have a specific orientation or must be constructed and operated in a specific orientation, and therefore should not be understood as limiting this application. Furthermore, the terms "first" and "second" are merely used to distinguish between the two in the description and have no special meaning.

[0012] Fig. 1 shows a structural schematic diagram of a handle-equipped preform 100 according to this embodiment. As shown in Fig. 1, the handle-equipped preform 100 comprises a preform body 101 and a handle 102 provided at the upper end of the preform body 101. After heating and blow molding, the preform body 101 is blow-molded into a bottle body of a PET bottle, and the handle 102 retains its original shape.

[0013] This embodiment provides a bottle preform heating device that can be used to heat preforms 100 with handles or bottle preforms without handles, and can achieve automatic preform feeding, automatic heating, and automatic preform removal, resulting in a tight workflow, high equipment utilization rate, and high production efficiency.

[0014] 2 is a structural schematic diagram of the bottle preform heating device according to this embodiment. As shown in FIG. 2, the bottle preform heating device includes a preform supply module 1, a carrier mechanism 2, a heating mechanism 3, a preform lifting and rotating mechanism 4, an air-cooling module 5, and a preform removal robot hand 6. The preform supply module 1 is configured to automatically transport preforms 100 with handles, and the carrier mechanism 2 is a mounting structure for the heating mechanism 3 and the preform lifting and rotating mechanism 4, and can drive the synchronous rotation of the heating mechanism 3 and the preform lifting and rotating mechanism 4. The preform lifting and rotating mechanism 4 is configured to automatically rotate the preform supply module 1, the carrier mechanism 2, and the preform lifting and rotating mechanism 4. The preform removal robot hand 6 is configured to receive the handle-equipped preforms 100 transported by the module 1 and transfer the handle-equipped preforms 100 to the heating mechanism 3 for heating, the heating mechanism 3 is configured to heat the handle-equipped preforms 100, the air cooling module 5 is configured to bleed air to the heating mechanism 3 to avoid local overheating of the handle-equipped preforms 100 during heating, and the preform removal robot hand 6 is configured to remove the handle-equipped preforms 100 that have been heated to a certain temperature and transfer them to a blow molding machine for blow molding operation.

[0015] Continuing to show in FIG. 2, a plurality of heating mechanisms 3 are spaced apart along the circumferential direction of the carrier mechanism 2, each heating mechanism 3 having a heating barrel 31, a plurality of preform lifting and rotating mechanisms 4 are spaced apart along the circumferential direction of the carrier mechanism 2, and correspond one-to-one to the heating mechanisms 3, and the preform lifting and rotating mechanisms 4 are configured to receive the preforms 100 with handles transported by the preform supply module 1 and insert the preform bodies 101 into the heating barrels 31, with the handles 102 located outside the heating barrels 31.

[0016] 2 , the air-cooled module 5 includes a total exhaust pipe 51 and a plurality of air-cooling mechanisms 52. The total exhaust pipe 51 is disposed in the middle of the carrier mechanism 2, and the plurality of air-cooling mechanisms 52 are disposed at intervals along the circumferential direction of the carrier mechanism 2, with the outlets of the plurality of air-cooling mechanisms 52 communicating with the total exhaust pipe 51. One air-cooling mechanism 52 bleeds air for a plurality of heating barrels 31, preventing local overheating of the handle-equipped preforms 100. This reduces the number of air-cooling mechanisms 52 and reduces equipment costs. For example, the extension direction of the total exhaust pipe 51 is disposed perpendicular to the carrier mechanism 2, i.e., the center line of the total exhaust pipe 51 overlaps with the rotation axis of the carrier mechanism 2. The air cooling mechanism 52 is connected to the bottom of the heating barrel 31 for air extraction, extracting the warm air from the heating barrel 31 through the bottom of the heating barrel 31, preventing the warm air from heating the preform opening of the heating barrel 31 and preventing the preform opening from being deformed by heat. Compared with the related art, which extracts air from the top of the heating box, extracting air from the bottom has a better air cooling effect, prevents the preform opening from being deformed by heat, and increases the yield rate.

[0017] 3 is a structural schematic diagram of the preform supply module 1 according to this embodiment. As shown in FIG. 3 and FIG. 2, the preform supply module 1 includes a preform supply mechanism 11, a transfer mechanism 12, and an orientation mechanism 13. The preform supply mechanism 11 is configured to receive the handle-equipped preforms 100 on the conveyor line and transfer the handle-equipped preforms 100 to the transfer mechanism 12. The transfer mechanism 12 is configured to transfer the handle-equipped preforms 100 to the orientation mechanism 13. The orientation mechanism 13 is configured to adjust the orientation of the handles 102 of the handle-equipped preforms 100 and transfer the handle-equipped preforms 100 to the preform lifting and rotating mechanism 4.

[0018] 4 is a structural schematic diagram of a carrier mechanism 2 according to this embodiment. As shown in FIG. 4, the carrier mechanism 2 includes a frame 21, a carrier disc 22, and a carrier disc driving component 23. The carrier disc 22 is rotatably attached to the frame 21, and the carrier disc driving component 23 is configured to drive the carrier disc 22 to rotate relative to the frame 21. The carrier disc 22 includes an upper disc body 221, a connecting member 222, and a lower disc body 223. The diameter of the upper disc body 221 is larger than the diameter of the lower disc body 223, and the connecting members 222 are connected between the upper disc body 221 and the lower disc body 223.

[0019] For example, the exhaust pipe 51 of the air-cooling module 5 is provided at the middle position of the lower disk body 223 of the carrier disk 22 , and the center line of the exhaust pipe 51 of the air-cooling module 5 overlaps with the center line of the lower disk body 223 .

[0020] Fig. 5 is a structural schematic diagram showing the preform lifting and rotating mechanism 4 according to this embodiment attached to the carrier disc 22. Fig. 6 is a partial schematic diagram showing the preform lifting and rotating mechanism 4 according to this embodiment attached to the carrier disc 22. 5 and 6, the preform lifting and rotating mechanism 4 includes a holder 41, a preform insertion component 42, and an elevation drive component 43. The holder 41 is fixed to the carrier disk 22. The preform insertion component 42 includes a lift table 421 and a preform insertion member 422. The lift table 421 is slidably attached to the holder 41. The preform insertion member 422 is attached to the lift table 421 and positioned above the heating barrel 31. The lift drive component 43 is configured to drive the lift table 421 to lift and lower the holder 41 so that the preform insertion member 422 can be inserted into a preform with handle 100 in the preform supply module 1 and the preform body 101 of the preform with handle 100 can be inserted into the heating barrel 31. Illustratively, the holder 41 is fixed to the upper disk body 221 of the carrier disk 22.

[0021] The preform lifting and rotating mechanism 4 further includes a guide component 44, which includes a slide rail 441 and a slide block 442 that are slidably engaged with each other. The slide rail 441 is fixed to the holder 41 in the vertical direction, and the slide block 442 is configured to mount the lift table 421. The installation of the guide component 44 ensures that the lift table 421 can be stably raised and lowered along the slide rail 441.

[0022] The lifting drive component 43 includes a guide rail 431 and a return member 432. The guide rail 431 includes an ascending segment and a descending segment. The lifting platform 421 ascends along the ascending segment of the guide rail 431, and when on the descending segment of the guide rail 431, can descend along the descending segment of the guide rail 431 under the action of the return member 432. The elevation of the lifting platform 421 can raise and lower the preform insert member 422. During the descending process of the preform insert member 422, the preform insert member 422 is inserted into the handle-equipped preform 100 and the handle-equipped preform 100 is inserted into the heating barrel 31. During the ascending process of the preform insert member 422, the preform insert member 422 removes the handle-equipped preform 100 from the heating barrel 31 and the preform insert member 422 is removed from the handle-equipped preform 100.

[0023] Preferably, the return member 432 is a linear actuator, and is attached to the holder 41, with the output end of the return member 432 connected to the lifting platform 421. Illustratively, the return member 432 may be a linear air cylinder, a linear hydraulic cylinder, a linear motor, or the like. Preferably, when the return member 432 is a linear actuator, the output end of the return member 432 is hingedly connected to the lifting platform 421, and the connection may be by floating, hinge, or ball joint. Of course, in other embodiments, the return member 432 may be a high-strength return spring, which is in a tensioning state when the lifting platform 421 ascends, and the spring can pull the lifting platform 421 down when the lifting platform 421 moves to the descending segment of the guide rail 431.

[0024] To prevent the preform insertion member 422 from moving downward indefinitely in conjunction with the return member 432, a stopper plate configured to limit the lowering position of the preform insertion member 422 is attached to the upper end of the preform insertion member 422.

[0025] Preferably, the preform insertion component 42 further includes a driven wheel 423, which is rotatably attached to the lifting platform 421, and the wheel surface of the driven wheel 423 can abut against the lifting drive component, ensuring that the lifting platform 421 moves up and down stably along the guide rail 431 and reducing the friction force between the lifting platform 421 and the guide rail 431.

[0026] 7 shows a partial cross-sectional view of the preform lifting and rotating mechanism 4 according to the present application. As shown in Fig. 7 and Fig. 6, the preform lifting and rotating mechanism 4 further includes a rotation drive component 45, the preform inserting member 422 is rotatably attached to the lifting table 421, and the rotation drive component 45 is configured to drive the rotation of the preform inserting member 422 so as to ensure that the handle-equipped preform 100 receives heat uniformly during the heating process and to avoid local overheating.

[0027] The preform insertion member 422 includes a preform insertion head 4222 and a lifting rotation shaft 4221 connected thereto, and the lifting rotation shaft 4221 and the lifting table 421 are rotatably engaged by a bearing. For example, the preform insertion head 4222 and the lifting rotation shaft 4221 are engaged with each other by an engagement groove or connected by a key groove, thereby realizing synchronous rotation between the preform insertion head 4222 and the lifting rotation shaft 4221. The preform insertion head 4222 can be a conventional preform insertion head in the related art. For example, the preform insertion head includes a first member and a second member, the second member is fitted into the first member, and an O-shaped rubber ring is provided between the second member and the first member. The second member is configured to be inserted into the mouth of a bottle preform. The second member is an expansion member, and the elastic deformation of the O-shaped rubber ring allows the second member to be smoothly inserted into the mouth of the bottle preform and expand; a detailed description thereof is omitted here.

[0028] Preferably, the rotation drive component 45 includes a rotation actuator 451, an input gear 452, an output gear 453, and a sliding sleeve 454. The rotation actuator 451 is attached to the holder 41 and configured to drive the rotation of the input gear 452. The output gear 453 meshes with the input gear 452. The sliding sleeve 454 is power-transmittingly connected to the output gear 453. The lifting rotation shaft 4221 of the preform inserting member 422 is slidably drilled within the sliding sleeve 454 and can rotate with the rotation of the sliding sleeve 454 and can move up and down relative to the sliding sleeve 454. Note that the power-transmitting connection of the sliding sleeve 454 to the output gear 453 may be achieved by fixing the sliding sleeve 454 within the output gear 453 or by engaging the sliding sleeve 454 and the output gear 453 with a keyway, as long as the sliding sleeve 454 rotates with the output gear 453.

[0029] For example, the lifting rotary shaft 4221 and the sliding sleeve 454 are power-transmittingly engaged by a linear keyway or a flat surface. When the lifting platform 421 raises or lowers the preform inserting member 422, the preform inserting member 422 rises or falls relative to the sliding sleeve 454 and the output gear 453, allowing the preform inserting head 4222 of the preform inserting member 422 to insert the preform into the barrel, remove the barrel, and remove the preform. When the output gear 453 rotates the sliding sleeve 454, the lifting rotary shaft 4221 rotates the preform with handle 100 together with the preform inserting head 4222, further rotating the preform inserting head 4222 to ensure that the preform with handle 100 is evenly heated. Furthermore, the lifting and rotating shaft 4221 is arranged coaxially with the preform insertion head 4222, and the lifting and rotating movements are concentrated on the same axis, resulting in a compact structure. The lifting and rotating movements are independent and do not interfere with each other.

[0030] For example, the rotary actuator 451 can be a motor with an encoder. Through program control, the rotary actuator 451 drives the lifting rotary shaft 4221 to rotate the preform insertion head 4222 forward, backward, or at variable speeds within the heating barrel 31, ensuring that the handle-equipped preforms 100 are uniformly heated. The encoder can accommodate different preform rotation needs. Furthermore, the preform lifting and rotating mechanism 4 can accurately position the handles 102 of the handle-equipped preforms 100 during heating in the heating barrel 31, preventing the handles 102 from overheating. An air-cooling mechanism 52 is connected to each heating barrel 31 and configured to bleed air into the heating barrel 31 to prevent localized overheating of the handle-equipped preforms 100.

[0031] Continuing to refer to FIG. 7, the lifting / lowering rotation shaft 4221 and the lifting / lowering platform 421 are rotatably connected by a bearing, and a circlip is provided on the lifting / lowering rotation shaft 4221, which fixedly connects the lifting / lowering rotation shaft 4221 and the bearing, thereby enabling the lifting / lowering rotation shaft 4221 to rise and fall synchronously when the lifting / lowering platform 421 rises and falls.

[0032] 8 is a structural schematic diagram of a guide rail 431 according to this embodiment. As shown in Fig. 8, the guide rail 431 includes a barrel release segment 43112, a preform release segment 43121, a preform-containing segment 43131, and a barrel-containing segment 43116, which are arranged in this order at intervals along the rotation direction of the carrier disk 22. The barrel release segment 43112 and the preform release segment 43121 are both arc-shaped segments that rise along the rotation direction of the carrier disk 22, and the preform-containing segment 43131 and the barrel-containing segment 43116 are both arc-shaped segments that descend along the rotation direction of the carrier disk 22. The lifting platform 421 can rise and fall along the guide rail 431. The lifting platform 421 is slidably engaged with the slide rail 441 in the holder 41 by the slide block 442, so that when the carrier disk 22 rotates, the lifting platform 421 can rise along the slide rail 441 under the action of the barrel release segment 43112 and the preform release segment 43121 of the guide rail 431, and when the carrier disk 22 continues to rotate, the lifting platform 421 can descend along the preform-containing segment 43131 and the barrel-containing segment 43116 of the guide rail 431 by the drive of the return member 432.

[0033] The lifting node of the lifting movement of the preform insertion member 422 of the preform lifting and rotating mechanism 4 must be precisely positioned and engaged with the handle-equipped preform 100 transported by the preform supply module 1 and the clamping end of the preform removal robot hand 6 so as to accurately insert and transport the handle-equipped preform 100 into the heating barrel 31, and to detach the handle-equipped preform 100 so that the handle-equipped preform 100 can be removed by the preform removal robot hand 6. For example, based on the rotation direction of the carrier disk 22, the starting end of the preform removal segment 43121 of the guide rail 431 must be aligned with the clamping end of the preform removal robot hand 6, and the clamping end of the preform removal robot hand 6 first clamps the handle preform 100. Then, when the lifting platform 421 rises along with the preform removal segment 43121, the preform insertion head 4222 releases from the handle preform 100, and the preform removal robot hand 6 transfers the handle preform 100 to the blow molding machine. The end of the preform-containing segment 43131 of the guide rail 431 must be aligned with the preform with handle 100 transported by the preform supply module 1, and when the lifting platform 421 descends along the preform-containing segment 43131, the preform insertion head 4222 on the lifting platform 421 is inserted just into the preform with handle 100 transported by the preform supply module 1, completing the reception of the preform with handle 100 by the preform insertion head 4222.

[0034] After the entire bottle preform heating device is assembled, installation errors or processing errors in the parts can easily cause the guide rails 431 to be incorrectly aligned with the preform supply module 1 and preform removal robot hand 6. In this case, adjusting the position of the entire guide rails 431 or adjusting the positions of the preform supply module 1 and preform removal robot hand 6 can be difficult to operate, and a single alignment can easily result in incorrect alignment, requiring multiple adjustments and repeated alignment, which not only increases the amount of work but also reduces work efficiency.

[0035] To solve the above problem, the preform release segment 43121 and the preform containing segment 43131 of the guide rail 431 are designed to be adjustable in position, and by individually adjusting the positions of the preform release segment 43121 and the preform containing segment 43131, it is possible to align the preform release segment 43121 with the preform removal robot hand 6, and the preform containing segment 43131 with the preform supply module 1. This not only makes adjustment easy, but also has high adjustment efficiency, making it easy to adjust repeatedly.

[0036] Preferably, the guide rail 431 includes a main body 4311, both ends of which are fixed to the frame 21, and a barrel-removing segment 43112 and a barrel-inserting segment 43116 are provided on the main body 4311. The guide rail 431 further includes a first adjustment portion 4312, which is provided with a preform-removing segment 43121, and the attachment position of the first adjustment portion 4312 on the main body 4311 is adjustable. The guide rail 431 further includes a second adjustment portion 4313, which is provided with a preform-inserting segment 43131, and the attachment position of the second adjustment portion 4313 on the main body 4311 is adjustable. In this embodiment, the guide rail 431 comprises a main body 4311, a first adjustment part 4312 and a second adjustment part 4313, a preform detachment segment 43121 is provided in the first adjustment part 4312, and the mounting position of the first adjustment part 4312 on the main body 4311 is adjustable along the rotation direction of the carrier disk 22 to adjust the distance between the preform detachment segment 43121 and the barrel detachment segment 43112 along the rotation direction of the carrier disk 22, and a preform-containing segment 43131 is provided in the second adjustment part 4313, and the mounting position of the second adjustment part 4313 on the main body 4311 is adjustable along the rotation direction of the carrier disk 22 to adjust the distance between the preform-containing segment 43131 and the barrel-containing segment 43116 along the rotation direction of the carrier disk 22.

[0037] 9 is a partial schematic diagram of a guide rail 431 according to this embodiment. As shown in FIGS. 9 and 8, the main body 4311 includes a first horizontal segment 43111, a barrel-removing segment 43112, a second horizontal segment 43113, a third horizontal segment 43114, a fourth horizontal segment 43115, a barrel-receiving segment 43116, and a fifth horizontal segment 43117, which are arranged in this order. The first horizontal segment 43111 and the fifth horizontal segment 43117 are both fixed to the frame 21. The second horizontal segment 43113 and the third horizontal segment 43114 are connected in a stepped manner, and a first adjustment groove is provided in the connection area between the two. The length of the first adjustment groove is greater than the length of the first adjustment portion 4312, and the first adjustment portion 4312 is fixed in the first adjustment groove so that its position can be adjusted along the length of the first adjustment groove. For example, the first adjusting portion 4312 has an oval hole extending in the rotation direction of the carrier disk 22, and a through-hole is provided in the first adjusting groove, thereby enabling adjustment of the position of the first adjusting portion 4312 in the first adjusting groove. Similarly, the third horizontal segment 43114 and the fourth horizontal segment 43115 are connected in a stepped manner, and a second adjusting groove is provided in the connecting area between them, the length of the second adjusting groove being longer than the length of the second adjusting portion 4313, and the second adjusting portion 4313 is fixed in the second adjusting groove so that its position can be adjusted along the length of the second adjusting groove. For example, the second adjusting portion 4313 has an oval hole extending in the rotation direction of the carrier disk 22, and a through-hole is provided in the second adjusting groove, thereby enabling adjustment of the position of the second adjusting portion 4313 in the second adjusting groove. Preferably, the number of oblong holes in the first adjusting portion 4312 is two, and the number of through holes thereon is also two, and the number of oblong holes in the second adjusting portion 4313 is two, and the number of through holes thereon is also two.

[0038] Illustratively, the height difference between the second horizontal segment 43113 and the first horizontal segment 43111 is greater than the height difference between the third horizontal segment 43114 and the second horizontal segment 43113, i.e., the height span of the barrel-detaching segment 43112 is greater than the height span of the preform-detaching segment 43121. The height difference between the fifth horizontal segment 43117 and the fourth horizontal segment 43115 is greater than the height difference between the fourth horizontal segment 43115 and the third horizontal segment 43114, i.e., the height span of the barrel-entering segment 43116 is greater than the height span of the preform-entering segment 43131.

[0039] 10 is a structural schematic diagram of the heating mechanism 3 and air-cooling mechanism 52 according to this embodiment. As shown in FIG. 10, the heating mechanism 3 further includes a mounting seat 32, which is fixed to the holder 41, the heating barrel 31 is attached to the mounting seat 32, and the heating barrel 31 and the preform inserting member 422 are coaxially arranged. In other embodiments, the heating mechanism 3 may be directly attached to the carrier disk 22, as long as the preform inserting member 422 of the preform lifting and rotating mechanism 4 can insert the handle-equipped preform 100 into the heating barrel 31 of the heating mechanism 3.

[0040] Preferably, the heating barrel 31 includes a heating case and a heating lamp, the heating lamp portion is housed in the heating case, and a plurality of heating lamps are provided at intervals along the length of the heating case. The preform body 101 of the handle-equipped preform 100 is inserted into the heating case and positioned in the middle of the heating lamps, and the preform body 101 of the handle-equipped preform 100 is heated by the heating lamps.

[0041] The heating case has a case structure that penetrates from top to bottom, and the handle-equipped preform 100 is inserted into the heating case from the top end under the action of the preform insertion member 422, and the air-cooling module 5 is connected to the bottom of the heating case, which extracts air from inside the heating case from the bottom of the heating case and prevents local overheating inside the heating case.

[0042] 10 , the air-cooling mechanism 52 includes a fan 521, an exhaust pipe 522, and an air extraction box 523. The first end of the exhaust pipe 522 is connected to the outlet of the fan 521, and the second end is connected to the general exhaust pipe 51. The air extraction box 523 is connected to the inlet of the fan 521. A plurality of ducts 52321 are provided in the air extraction box 523. The heating barrels 31 are attached to the ducts 52321 and communicate with the ducts 52321. In FIG. 10 , one air-cooling mechanism 52 includes six ducts 52321, each connected to one heating barrel 31. Of course, in other embodiments, the air extraction box 523 of one air-cooling mechanism 52 may include any number of ducts 52321, depending on, for example, the size of the air extraction box 523 and the power of the fan 521, and the number is not limited thereto. Such an installation can reduce the number of fans 521, reduce equipment costs, and also facilitate the processing, manufacturing, and mounting positioning of the air-cooling mechanism 52.

[0043] Illustratively, the heating barrel 31 is connected to the duct 52321 via a bellows 524. By connecting via the bellows 524, processing or installation errors can be compensated for, and the installation operation becomes easier.

[0044] FIG. 11 is a schematic diagram of the structure of the air extraction box 523 according to this embodiment. As shown in FIG. 11 , the air extraction box 523 includes a connecting portion 5231 and an air box portion 5232 that communicate with each other. The connecting portion 5231 is connected to the air intake of the fan 521. The air box portion 5232 is provided with a duct 52321. The air box portion 5232 is fan-shaped, and the air box portions 5232 of multiple air-cooling mechanisms 52 are connected together in a circular configuration. This arrangement allows for full utilization of the space below the upper disk body 221 of the carrier disk 22. Designing the carrier disk 22 to include a large-diameter upper disk body 221 and a small-diameter lower disk body facilitates installation of the preform lifting / rotating mechanism 4 and the heating mechanism 3, as well as the total exhaust pipe 51 of the air-cooling module 5. Furthermore, sufficient installation space can be reserved below the lower disk body 223, facilitating the placement of the heating mechanism 3 and the air-cooling mechanism 52.

[0045] Continuing to refer to FIG. 11, the air extraction box 523 further includes an air guide plate 5233, which is attached to the inside of the air box section 5232 and divides the inside of the air box section 5232 into a plurality of independently provided air extraction spaces, and the plurality of ducts 52321 in the air box section 5232 are divided into a plurality of duct groups, and the duct groups are provided in one-to-one correspondence with the air extraction spaces. The air guide plate 5233 divides the air box section 5232 of the air extraction box 523 into independent air extraction spaces, dividing the air and ensuring that the air extraction efficiency of each air extraction space is approximately the same, thereby ensuring that the air cooling effects of the corresponding heating barrels 31 are similar. This avoids the situation where some heating barrels 31 have poor air cooling efficiency, causing local overheating of the handle preforms 100 in the heating barrels 31, but some heating barrels 31 have good air cooling efficiency, resulting in the heating efficiency of the handle preforms 100 in the heating barrels 31 being too low and unable to meet the heating needs, thereby reducing power consumption and improving air cooling efficiency.

[0046] Preferably, air guide plate 5233 is V-shaped, with the tip of air guide plate 5233 located at the end closest to connecting portion 5231 and the open end of air guide plate 5233 located at the end away from connecting portion 5231. V-shaped air guide plate 5233 separates an independent area that does not need to be bled, thereby reducing the area in air box section 5232 that needs to be bled, and ensuring the air bleeding effect of fan 521.

[0047] 11, there is one air guide plate 5233, which is provided at the middle position of the air box section 5232 and divides the air box section 5232 into two independent bleed spaces and one space that does not require bleed air. Of the six ducts 52321, three ducts 52321 form one duct group, and each duct group communicates with one bleed space. Of course, in other embodiments, the number of air guide plates 5233 may be two, and a description thereof will be omitted here.

[0048] The workflow of the heating device for the handle-equipped preform 100 according to this embodiment is as follows.

[0049] 1) When the handle-equipped preforms 100 are transported by the preform supply module 1 and the handle-equipped preforms 100 are transported by the preform supply mechanism 11 and the transfer mechanism 12, the orientation of the handles 102 of the handle-equipped preforms 100 is in a random state, and under the action of the orientation component of the orientation mechanism 13, the orientation of the handles 102 of the handle-equipped preforms 100 is adjusted to a unified direction.

[0050] 2) The carrier mechanism 2 rotates the preform lifting and rotating mechanism 4, the heating mechanism 3 and the air cooling module 5, and during this process, the preform insertion member 422 of the preform lifting and rotating mechanism 4, in cooperation with the preform-containing segment 43131 of the guide rail 431 and the return member 432, is inserted into the handle-equipped preform 100 transported by the orientation mechanism 13, and as the carrier disk 22 continues to rotate, the preform insertion member 422, in cooperation with the barrel-containing segment 43116 of the guide rail 431 and the return member 432, inserts the handle-equipped preform 100 into the heating barrel 31 of the heating mechanism 3.

[0051] 3) The carrier mechanism 2 continues to rotate the preform lifting and rotating mechanism 4, the heating mechanism 3, and the air cooling module 5. During this process, the heating mechanism 3 and the air cooling module 5 are activated simultaneously. The heating barrel 31 of the heating mechanism 3 heats the handle-equipped preforms 100. The air cooling module 5 is configured to extract warm air from the heating barrel 31 to prevent local overheating of the handle-equipped preforms 100 in the heating barrel 31. The rotation drive component 45 of the preform lifting and rotating mechanism 4 is configured to drive the preform inserting member 422 to rotate the handle-equipped preforms 100, ensuring that the handle-equipped preforms 100 are uniformly heated and preventing local overheating.

[0052] 4) The carrier mechanism 2 continues to rotate the preform lifting and rotating mechanism 4, the heating mechanism 3, and the air-cooling module 5. During this process, when the handle-equipped preform 100 is heated to a state suitable for blow molding, the preform insertion member 422 of the preform lifting and rotating mechanism 4, in cooperation with the barrel detachment segment 43112 of the guide rail 431, releases the handle-equipped preform 100 from the heating barrel 31. The preform removal robot hand 6 then clamps the handle-equipped preform 100. As the carrier disk 22 continues to rotate, the preform insertion member 422 releases from the handle-equipped preform 100 under the action of the preform detachment segment 43121 of the guide rail 431. The preform removal robot hand 6 then transports the handle-equipped preform 100 into the blow molding machine for blow molding.

[0053] The preform lifting and rotating mechanism according to the present application can drive the lifting and rotation of bottle preforms, has a compact structure, occupies a small space, and has low equipment costs.

[0054] The bottle preform heating device according to the present application can drive the lifting and rotation of the bottle preforms by using the preform lifting and rotation mechanism described above, and has a compact facility structure and occupies a small space. [Explanation of symbols]

[0055] 100 Preform with handle 101 Preform body 102 Handle 1 Preform Supply Module 11 Preform supply mechanism 12 Transition Mechanism 13 Orientation mechanism 2. Career Organization 21 frames 22 Carrier disc 221 Upper disc body 222 Connecting member 223 Lower disc body 23 Carrier disk drive components 3 Heating mechanism 31 Heated Barrel 32 Mounting seat 4 Preform lifting and rotating mechanism 41 Holder 42 Preform Insert Components 421 Lift Platform 422 Preform insert 4221 Elevating and rotating shaft 4222 Preform Insertion Head 423 Driven Wheel 43 Lift drive components 431 Guide Rail 4311 Main body 43111 First horizontal segment 43112 Barrel Detachment Segment 43113 Second horizontal segment 43114 3rd horizontal segment 43115 4th horizontal segment 43116 Barreled Segments 43117 5th horizontal segment 4312 1st adjustment section 43121 Preform detachment segment 4313 Second adjustment section 43131 Preformed Segments 432 Return member 44 Guide Components 441 Slide Rail 442 Slide Block 45 Rotational Drive Components 451 Rotary Actuator 452 Input gear 453 Output Gear 454 Slide Sleeve 5 Air Cooling Module 51 Total exhaust pipe 52 Air cooling mechanism 521 fans 522 Exhaust pipe 523 Bleeding Box 5231 Connection 5232 Wind box part 52321 Duct 5233 Wind guide plate 524 Bellows 6 Preform removal robot hand

Claims

1. A preform lifting and rotating mechanism configured to drive the lifting and rotation of a bottle preform, a holder (41) fixed to the carrier disk (22) of the carrier mechanism (2) that can rotate it; a preform insertion component (42) comprising a lifting platform (421) and a preform insertion member (422), the lifting platform (421) being slidably attached to the holder (41) and the preform insertion member (422) being rotatably attached to the lifting platform (421); an elevation drive component (43) configured to drive the elevation platform (421) to elevate and lower relative to the holder (41) so that the preform inserting member (422) can be inserted into the bottle preform and the bottle preform can be inserted into the heating barrel (31); a rotational drive component (45) configured to drive the rotation of the preform insert member (422). Preform lifting and rotating mechanism.

2. The lifting / lowering drive component (43) includes a guide rail (431) and a return member (432), the return member (432) is attached to the holder (41), an output end of the return member (432) is connected to the lifting platform (421), the return member (432) is configured to drive the lifting platform (421) to move downward, and the lifting platform (421) can rise along the guide rail (431) and fall along the guide rail (431) by the drive of the return member (432). The preform lifting and rotating mechanism according to claim 1 .

3. The guide rail (431) comprises a barrel release segment (43112), a preform release segment (43121), a preform containing segment (43131), and a barrel containing segment (43116) arranged in sequence at intervals along the rotation direction of the carrier disk (22), the barrel release segment (43112) and the preform release segment (43121) are both arc-shaped segments that rise along the rotation direction of the carrier disk (22), the preform containing segment (43131) and the barrel containing segment (43116) are both arc-shaped segments that descend along the rotation direction of the carrier disk (22), and the lifting platform (421) can rise and fall along the guide rail (431). The preform lifting and rotating mechanism according to claim 2 .

4. The carrier mechanism (2) further comprises a frame (21), the carrier disk (22) is rotatably attached to the frame (21), the guide rail (431) comprises a main body (4311), both ends of the main body (4311) are fixed to the frame (21), and the barrel-removing segment (43112) and the barrel-receiving segment (43116) are provided on the main body (4311). The preform lifting and rotating mechanism according to claim 3.

5. The guide rail (431) further includes a first adjustment portion (4312), the preform detachment segment (43121) is provided in the first adjustment portion (4312), and the attachment position of the first adjustment portion (4312) on the main body portion (4311) is adjustable. The preform lifting and rotating mechanism according to claim 4.

6. The guide rail (431) further includes a second adjustment portion (4313), the preform-containing segment (43131) is provided in the second adjustment portion (4313), and the attachment position of the second adjustment portion (4313) on the main body portion (4311) is adjustable.

6. The preform lifting and rotating mechanism according to claim 4 or 5.

7. The preform insertion component (42) further comprises a driven wheel (423), the driven wheel (423) being rotatably attached to the lifting platform (421), and a wheel surface of the driven wheel (423) being in contact with the guide rail (431) and being movable along the guide rail (431). The preform lifting and rotating mechanism according to claim 2 .

8. The rotary drive component (45) comprises a rotary actuator (451), an input gear (452), an output gear (453), and a sliding sleeve (454), the rotary actuator (451) is attached to the holder (41), the rotary actuator (451) is configured to drive the rotation of the input gear (452), the output gear (453) is meshed with the input gear (452), the sliding sleeve (454) is transmission-connected to the output gear (453), and the preform insert member (422) is slidably inserted in the sliding sleeve (454) and can rotate with the rotation of the sliding sleeve (454). The preform lifting and rotating mechanism according to claim 1 .

9. The preform inserting member (422) comprises a lifting rotary shaft (4221) and a preform inserting head (4222), and the lifting rotary shaft (4221) is power-transmitted to the lifting platform (421); The preform lifting and rotating mechanism according to claim 1 .

10. The lifting platform further includes a guide component (44), the guide component (44) including a slide rail (441) and a slide block (442) that are slidably engaged with each other, the slide rail (441) being fixed to the holder (41) along a vertical direction, and the slide block (442) being fixedly connected to the lifting platform (421). The preform lifting and rotating mechanism according to claim 1 .

11. a heating mechanism (3) and the preform lifting and rotating mechanism according to any one of claims 1 to 10, wherein the preform lifting and rotating mechanism is configured to insert a bottle preform into a heating barrel (31) of the heating mechanism (3) and drive the bottle preform to rotate within the heating barrel (31). Bottle preform heating device.

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