Bottle embryo removing device and bottle embryo detection and screening system

Abstract

The present application belongs to the technical field of plastic bottle processing equipment, and discloses a bottle embryo removing device and a bottle embryo detection and screening system. The bottle embryo removing device comprises a conveying mechanism and a removing mechanism. The conveying mechanism comprises a conveying chain, which is used for conveying bottle embryos. The conveying chain is provided with a gap. An auxiliary part is telescopically connected to the gap to fill the conveying chain or open the gap to form a removing opening. The removing mechanism comprises a plurality of first blowing parts and a plurality of second blowing parts. The first blowing parts and the second blowing parts are both connected to a gas supply device. The first blowing parts are arranged at the top of the gap. The second blowing parts are arranged at one side of the bottom of the gap. The blowing directions of the first blowing parts and the second blowing parts are different. The defective bottle embryos can be detected and removed before entering the heating machine, which reduces the occurrence of problems such as embryo jamming and insertion of the conveying star wheel, improves the safety and stability of the equipment operation, and reduces the energy consumption without heating and blowing the defective bottle embryos.

Description

Technical Field

[0001] This invention relates to the field of plastic bottle processing equipment technology, and in particular to a preform rejection device and a preform detection and screening system. Background Technology

[0002] Currently, in the plastic bottle processing and production process, due to inadequate protection measures during the transportation and storage of preforms, defects such as preform mouth deformation, support ring damage, and impurities inside the preform may occur. This will result in some preforms entering the heating machine of the blow molding equipment having defects, which will cause problems such as preform jamming on the transport star wheel and preform insertion, thus triggering alarms; it will also cause the machine to stop suddenly, resulting in damage to electrical components such as lights in the heating machine.

[0003] Therefore, improving the quality of preforms entering subsequent heating, blow molding, and other processing stages is one of the important problems that the industry needs to solve. Summary of the Invention

[0004] One objective of this invention is to provide a preform rejection device that can reject defective preforms before they enter the heating machine, thereby reducing problems such as preform jamming and insertion on the transport star wheel, improving the safety and stability of equipment operation, and eliminating the need to heat and blow-dry defective preforms, which also reduces energy consumption to some extent.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A preform rejection device is installed in front of the feed inlet of the blow molding machine. The preform rejection device includes:

[0007] The conveying mechanism includes a conveyor chain for transporting and conveying preforms. The conveyor chain has a notch, and an auxiliary component is retractably connected to the notch to fill it to form a complete conveyor chain or to open the notch to form a rejection port.

[0008] The rejection mechanism includes several first air blowing elements and several second air blowing elements. Both the first and second air blowing elements are connected to an air supply device. The first air blowing elements are located at the top of the notch, and the second air blowing elements are located on one side of the bottom of the notch. Both the first and second air blowing elements are used to blow air to reject the defective preforms. The blowing directions of the first and second air blowing elements are different.

[0009] Optionally, one end of the auxiliary component is provided with a first driving component, which is used to drive the auxiliary component to move in a straight line in a direction toward or away from the gap, so as to fill or open the gap.

[0010] Optionally, the first driving component is a cylinder, and the cylinder is connected to an air supply device to drive the auxiliary component.

[0011] Optionally, an air storage tank is also connected between the cylinder and the air supply device, and the air storage tank stores driving gas to assist the continuous driving operation of the first driving component.

[0012] Optionally, the first driving member is further connected to a first control valve, which is used to control the on / off connection between the first driving member and the air supply device; and / or,

[0013] The first air-blowing component is connected to a second control valve, which is used to control the on / off connection between the first air-blowing component and the air supply device; and / or,

[0014] The second air blowing element is connected to a third control valve, which is used to control the connection and disconnection between the second air blowing element and the air supply device.

[0015] Optionally, the rejection mechanism further includes a preform receiving hopper, which is located downstream of the blowing direction of the second blowing element. The inner surface of the preform receiving hopper is provided with a buffer to cushion the preform that falls into it.

[0016] Optionally, the position of the first air-blowing element is adjustable; and / or,

[0017] The position of the second air blowing component is adjustable.

[0018] Optionally, the rejection mechanism further includes a first adjustment assembly, which includes a first adjustment rod, a second adjustment rod, a first clamping block, a second clamping block, and an adjustment plate; the first adjustment rod extends along a first direction, and the second adjustment rod extends along a second direction.

[0019] One end of the second adjusting rod is detachably connected to the first adjusting rod via the first clamping block. The first clamping block can slide along the first direction on the first adjusting rod and can rotate around the first adjusting rod.

[0020] The other end of the second adjusting rod is detachably connected to an adjusting plate via the second clamping block. The second clamping block can slide along the second direction on the second adjusting rod and can rotate around the second adjusting rod.

[0021] The first air blowing component is fixed to the adjusting plate, the adjusting plate has an oblong hole, the second clamp is detachably connected to a fastener, the fastener is slidably connected to the oblong hole, so that the adjusting plate can rotate around the axis of the third direction, the first direction, the second direction and the third direction are perpendicular to each other.

[0022] Optionally, the rejection mechanism further includes a second adjustment component, which includes a third adjustment rod and a third clamping block. The third adjustment rod extends along a first direction, and the second air blowing element is detachably connected to the third adjustment rod via the third clamping block. The third clamping block can slide along the first direction on the third adjustment rod and can rotate around the third adjustment rod.

[0023] Another objective of this invention is to provide a preform detection and screening system that can detect and effectively remove defective preforms before they enter the heating machine, thereby reducing problems such as preform jamming and insertion on the transport star wheel and improving the safety and stability of equipment operation.

[0024] To achieve this objective, the present invention adopts the following technical solution:

[0025] The preform inspection and screening system includes an imaging inspection system and the preform rejection device described above. The imaging inspection system is used to detect the quality of preforms transferred to the preform rejection device before the station where the notch is located.

[0026] The beneficial effects of this invention are:

[0027] This invention provides a preform rejection device and a preform detection and screening system. By creating a notch in the conveyor chain transporting preforms, and having an auxiliary component retractably connected to the notch, defective preforms can be allowed to fall off the conveyor chain by opening the auxiliary component at the notch. Then, under the combined action of a first air blowing component and a second air blowing component, the fallen defective preforms are transported to a designated location. This preform rejection device not only removes defective preforms but also limits the direction of preform rejection, preventing them from falling randomly and causing equipment damage. This improves the reliability of the preform rejection device and the operational safety and stability of the blow molding machine.

[0028] By setting up an imaging detection system to detect whether there are defects in the preforms, and then using a preform rejection device to effectively reject defective preforms before they enter the blow molding machine, the occurrence of problems such as preform jamming and insertion on the transport star wheel is reduced, thereby improving the safety and stability of equipment operation. Attached Figure Description

[0029] Figure 1 This is an isometric view of the preform rejection device provided in a specific embodiment of the present invention;

[0030] Figure 2 This is a cross-sectional view of the preform rejection device provided in a specific embodiment of the present invention.

[0031] In the picture:

[0032] 10. Conveying mechanism; 11. Conveying chain; 111. Transport star wheel; 112. Guard plate; 113. Notch; 12. Drive assembly;

[0033] 21. Auxiliary component; 22. First drive component; 23. Gas storage tank; 24. First control valve;

[0034] 30. Rejection mechanism; 31. First air blowing component; 32. Second air blowing component; 33. Second control valve; 34. Receiving hopper; 35. First adjusting assembly; 351. First adjusting rod; 352. Second adjusting rod; 353. First clamping block; 354. Second clamping block; 355. Adjusting plate; 36. Second adjusting assembly; 361. Third adjusting rod; 362. Third clamping block;

[0035] 40. Base;

[0036] 200. Preform. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0041] The following reference Figure 1 and Figure 2 This invention introduces the preform rejection device and preform detection and screening system provided by the present invention.

[0042] It should be noted that the first direction position Figure 1 The Z direction in the equation is the vertical direction, and the second direction is... Figure 1 In the X direction, the third direction is Figure 1 In the equation, the Y direction, X direction, and Z direction are all perpendicular to each other.

[0043] This embodiment provides a preform rejection device, which is set in front of the feed inlet of a blow molding machine to reject defective preforms 200 in advance.

[0044] Please refer to Figure 1 and Figure 2 Specifically, the preform rejection device includes a conveying mechanism 10 and a rejection mechanism 30. The conveying mechanism 10 includes a conveyor chain 11 for transporting preforms 200. The conveyor chain 11 has a notch 113, and an auxiliary component 21 is retractably connected to the notch 113 to fill it to form a complete conveyor chain 11 or to open the notch 113 to form a rejection opening. The rejection mechanism 30 includes several first air blowing components 31 and several second air blowing components 32. Both the first air blowing components 31 and the second air blowing components 32 are connected to an air supply device. The first air blowing components 31 are located at the top of the notch 113, and the second air blowing components 32 are located on one side of the bottom of the notch 113. Both the first air blowing components 31 and the second air blowing components 32 are used to blow air to reject defective preforms 200. The blowing directions of the first air blowing components 31 and the second air blowing components 32 are different.

[0045] The preform rejection device in this embodiment has a notch 113 on the conveyor chain 11 that transports the preforms 200. An auxiliary component 21 is retractably connected to the notch 113, allowing defective preforms to fall off the conveyor chain by opening the auxiliary component 21 at the notch 113. Then, the first air blowing component 31 and the second air blowing component 32 work together to transport the fallen defective preforms 200 to a designated location. This preform rejection device not only removes defective preforms 200 but also limits the rejection direction, preventing them from falling randomly and causing equipment damage. This improves the reliability of the preform rejection device and the operational safety and stability of the blow molding machine.

[0046] Please refer to Figure 1 and Figure 2 In this embodiment, the conveyor chain 11 includes a transport star wheel 111 and a guard plate 112. The guard plate 112 is arc-shaped and spaced apart from the transport star wheel 111 to form a circular transport line for preforms 200 with multiple transport stations.

[0047] Specifically, a notch 113 is provided at the position corresponding to any work station on the guard plate 112 to form a rejection port. The transport of the preform 200 is only ensured when the auxiliary component 21 fills the notch 113. When the auxiliary component 21 is away from the notch 113, the preform 200 is in a free state and can be rejected from the transport chain by the first air blowing component 31 and the second air blowing component 32.

[0048] Furthermore, the conveying mechanism 10 also includes a drive component 12, the output end of which is connected to the transport star wheel 111 to drive the transport star wheel 111.

[0049] Optionally, the drive assembly 12 includes a drive structure and a transmission component. The output end of the drive structure is connected to the transmission component, and the transmission component is connected to the transport star wheel 111. The drive structure transmits the driving force to the transport star wheel 111 through the transmission component to realize the driving function of the drive assembly 12.

[0050] In this embodiment, one end of the auxiliary component 21 is provided with a first driving component 22. The first driving component 22 is used to drive the auxiliary component 21 to move linearly in a direction toward or away from the gap 113, so as to fill or open the gap 113. In use, the auxiliary component 21 can be driven by the first driving component 22, thereby filling or opening the gap 113.

[0051] Optionally, the first driving component 22 can be a linear motor, cylinder, or other structure, and no specific limitation is made here.

[0052] Specifically, in this embodiment, the first driving component 22 is a cylinder, which is connected to an air supply device to drive the auxiliary component 21. The cylinder is chosen because the first air blowing component 31 and the second air blowing component 32 use an air supply device. Therefore, the first driving component 22 is a cylinder, which can also be directly connected to the air supply device to drive the auxiliary component 21.

[0053] Furthermore, an air storage tank 23 is connected between the cylinder and the air supply device. The air storage tank 23 stores driving gas to assist the continuous driving operation of the first driving component 22. This arrangement is to ensure that if several consecutive preforms 200 are defective preforms 200, the auxiliary component 21 needs to be continuously driven away from the notch 113. If the air supply device is used directly to supply gas through the pipeline, there may be insufficient gas supply, which may result in the inability to meet the requirements of continuous rejection operation. The air storage tank 23 ensures that the air flow rate meets the requirements of continuous rejection operation when the first driving component 22 is operating continuously, thereby improving the reliability of the preform rejection device.

[0054] Optionally, a high-speed direct-acting cylinder is selected to improve the reaction speed of the first driving component 22, thereby making the removal of the preform 200 faster and more reliable, and it has its own limiting function, so that there is no impact on the notch 113 of the guard plate 112 and the preform 200 will not jump during transportation.

[0055] Optionally, the first drive member 22 is further connected to a first control valve 24, which controls the on / off connection between the first drive member 22 and the air supply device; and / or, the first air blowing member 31 is connected to a second control valve 33, which controls the on / off connection between the first air blowing member 31 and the air supply device; and / or, the second air blowing member 32 is connected to a third control valve, which controls the on / off connection between the second air blowing member 32 and the air supply device. This arrangement ensures that the first drive member 22 and / or the first air blowing member 31 and / or the second air blowing member 32 have individual control valves to control their own operating states.

[0056] Preferably, the first drive component 22 is also connected to a first control valve 24, which controls the on / off state of the first drive component 22 and the air supply device; the first air blowing component 31 is connected to a second control valve 33, which controls the on / off state of the first air blowing component 31 and the air supply device; and the second air blowing component 32 is connected to a third control valve. This arrangement enables individual control of the action time and blowing time of the three structures to meet more needs.

[0057] Specifically, the first control valve 24, the second control valve 33, and the third control valve are all solenoid valves, which have the advantages of low energy consumption, low cost, and rapid response.

[0058] Optionally, the air outlet of the first drive unit 22 is also equipped with a quick exhaust valve. The quick exhaust valve shortens the reaction time and improves the operating speed of the first drive unit 22.

[0059] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the number of the first air blowing element 31 and the second air blowing element 32 can be set according to actual needs. In this embodiment, there is one first air blowing element 31 and two second air blowing elements 32.

[0060] Optionally, the position of the first air blowing element 31 is adjustable; and / or, the position of the second air blowing element 32 is adjustable. Setting the first air blowing element 31 and / or the second air blowing element 32 to be adjustable facilitates effective adjustment of the falling direction of the preform 200, improving the adaptability of the preform rejection device.

[0061] Alternatively, the positions of the first air blowing element 31 and the second air blowing element 32 can be adjusted to further increase the adjustment range of the drop direction of the preform 200, thereby further improving the adaptability of the preform rejection device.

[0062] Specifically, the rejection mechanism 30 also includes a first adjustment component 35, which includes a first adjustment rod 351, a second adjustment rod 352, a first clamping block 353, a second clamping block 354, and an adjustment plate 355. The first adjustment rod 351 extends along a first direction, and the second adjustment rod 352 extends along a second direction. One end of the second adjustment rod 352 is detachably connected to the first adjustment rod 351 via the first clamping block 353. The first clamping block 353 can slide along the first adjustment rod 351 in the first direction and can rotate around the first adjustment rod 351. This allows for the adjustment of the displacement of the first air blowing component 31 along the Z direction and its oscillation around the Z axis. Furthermore, the other end of the second adjusting rod 352 is detachably connected to an adjusting plate 355 via a second clamping block 354. The second clamping block 354 can slide along the second direction on the second adjusting rod 352 and can rotate around the second adjusting rod 352; thus, the displacement of the first air blowing component 31 along the X direction and its swing around the X-axis can be adjusted. The first air blowing component 31 is fixed to the adjusting plate 355, which has an oblong hole. The second clamping block 354 is detachably connected to a fastener, which slides in the oblong hole so that the adjusting plate 355 can rotate around the axis of the third direction. The first direction, the second direction, and the third direction are all perpendicular to each other; thus, the swing adjustment of the first air blowing component 31 along the Y-axis can be achieved, thereby adjusting the position of the first air blowing component 31 in various directions.

[0063] Furthermore, the rejection mechanism 30 also includes a second adjustment assembly 36, which includes a third adjustment rod 361 and a third clamping block 362. The third adjustment rod 361 extends along a first direction, and the second air-blowing component 32 is detachably connected to the third adjustment rod 361 via the third clamping block 362. The third clamping block 362 can slide along the third adjustment rod 361 in the first direction and can rotate around the third adjustment rod 361. This allows for adjustment of the displacement of the second air-blowing component 32 along the Z-direction and its oscillation around the Z-axis, thus achieving positional adjustment of the second air-blowing component 32 in the desired direction.

[0064] Specifically, the first clamping block 353, the second clamping block 354, and the third clamping block 362 all adopt the same clamping block structure. Each clamping block structure is provided with an open fixing hole. The open fixing hole can be fitted onto the corresponding first adjusting rod 351, second adjusting rod 352, or third adjusting rod 361. The clamping block structure can be fixed by tightening the opening of the fixing hole under the action of the bolt. When the bolt is not tightened, its position can be adjusted.

[0065] Furthermore, the rejection mechanism 30 also includes a preform receiving hopper 34, which is located downstream of the blowing direction of the second blowing member 32 to receive the falling defective preforms 200. In this embodiment, the preform receiving hopper 34 has a semi-enclosed structure to receive the preforms 200 that are obliquely upward.

[0066] Optionally, the inner surface of the preform receiving hopper 34 is provided with a buffer to cushion the preforms 200 that fall into it, thereby preventing the preforms 200 from being ejected when they fall in and causing them to collide and fall outside the preform receiving hopper 34.

[0067] In this embodiment, the preform rejection device also includes a base 40 to support and install the conveying mechanism 10, the rejection mechanism 30, and the auxiliary component 21.

[0068] This embodiment also provides a preform inspection and screening system, which includes an imaging detection system and a preform rejection device as described in any of the above-mentioned solutions. The imaging detection system is used to detect the quality of preforms 200 at stations before the station with notch 113 in the preform rejection device. By setting up an imaging detection system to detect whether the preforms 200 have defects, and then effectively rejecting defective preforms 200 before they enter the blow molding machine by the preform rejection device, the occurrence of problems such as preform jamming and insertion on the transport star wheel 111 is reduced, thereby improving the safety and stability of equipment operation.

[0069] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A preform rejection device, characterized in that, The preform rejection device, located in front of the feed inlet of the blow molding machine, includes: The conveying mechanism (10) includes a conveying chain (11) for transporting and conveying preforms (200). The conveying chain (11) has a notch (113) at which an auxiliary component (21) is retractably connected to fill the notch (113) to form a complete conveying chain (11) or to open the notch (113) to form a rejection port. The rejection mechanism (30) includes a plurality of first air blowing elements (31) and a plurality of second air blowing elements (32). Both the first air blowing elements (31) and the second air blowing elements (32) are connected to an air supply device. The first air blowing elements (31) are located at the top of the notch (113). The second air blowing elements (32) are located on one side of the bottom of the notch (113). Both the first air blowing elements (31) and the second air blowing elements (32) are used to blow air to reject the defective preforms (200). The blowing directions of the first air blowing elements (31) and the second air blowing elements (32) are different. The position of the first air blowing element (31) is adjustable; and / or, The position of the second air blowing element (32) is adjustable; The rejection mechanism (30) further includes a first adjustment component (35), which includes a first adjustment rod (351), a second adjustment rod (352), a first clamping block (353), a second clamping block (354), and an adjustment plate (355); the first adjustment rod (351) extends along a first direction, and the second adjustment rod (352) extends along a second direction; One end of the second adjusting rod (352) is detachably connected to the first adjusting rod (351) via the first clamping block (353). The first clamping block (353) can slide along the first direction on the first adjusting rod (351) and can rotate around the first adjusting rod (351). The other end of the second adjusting rod (352) is detachably connected to an adjusting plate (355) via the second clamping block (354). The second clamping block (354) can slide along the second direction on the second adjusting rod (352) and can rotate around the second adjusting rod (352). The first air blowing component (31) is fixed to the adjusting plate (355), the adjusting plate (355) has a waist-shaped hole, and the second clamping block (354) is detachably connected to a fastener. The fastener is slidably connected to the waist-shaped hole so that the adjusting plate (355) can rotate around the axis of the third direction. The first direction, the second direction and the third direction are perpendicular to each other. The rejection mechanism (30) further includes a second adjustment component (36), which includes a third adjustment rod (361) and a third clamping block (362). The third adjustment rod (361) extends along a first direction, and the second air blowing component (32) is detachably connected to the third adjustment rod (361) via the third clamping block (362). The third clamping block (362) can slide along the first direction on the third adjustment rod (361) and can rotate around the third adjustment rod (361).

2. The preform rejection device according to claim 1, characterized in that, One end of the auxiliary component (21) is provided with a first driving component (22), which is used to drive the auxiliary component (21) to move in a straight line in the direction toward or away from the gap (113) to fill or open the gap (113).

3. The preform rejection device according to claim 2, characterized in that, The first driving component (22) is a cylinder, which is connected to an air supply device to drive the auxiliary component (21).

4. The preform rejection device according to claim 3, characterized in that, A gas storage tank (23) is also connected between the cylinder and the gas supply device. The gas storage tank (23) stores driving gas to assist the continuous driving operation of the first driving component (22).

5. The preform rejection device according to claim 3, characterized in that, The first drive unit (22) is also connected to a first control valve (24), which is used to control the on / off connection between the first drive unit (22) and the air supply device; and / or, The first air blowing element (31) is connected to a second control valve (33), which is used to control the on / off connection between the first air blowing element (31) and the air supply device; and / or, The second air blowing element (32) is connected to a third control valve, which is used to control the connection and disconnection between the second air blowing element (32) and the air supply device.

6. The preform rejection device according to claim 1, characterized in that, The rejection mechanism (30) further includes a preform receiving hopper (34), which is located downstream of the blowing direction of the second blowing member (32). The inner surface of the preform receiving hopper (34) is provided with a buffer to buffer the preform (200) that falls into it.

7. A preform detection and screening system, characterized in that, The device includes an imaging detection system and a preform rejection device as described in any one of claims 1-6, wherein the imaging detection system is used to detect the quality of a preform (200) that flows to a station before the station where the notch (113) is located in the preform rejection device.

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