A barrel lid in-mold labeling device

Abstract

The application discloses a barrel cover in-mold labeling device, comprising: a label placing device; an injection molding machine located on one side of the label placing device; a label moving device located above the injection molding machine and the label placing device and fixedly connected with the injection molding machine, comprising a first conveying mechanism, a second conveying mechanism and a third conveying mechanism, and a compatible dynamic fixed mold in-mold labeling mechanism is arranged at the bottom of the third conveying mechanism. The barrel cover in-mold labeling device can realize uninterrupted cycle labeling work of the barrel cover, complete the labeling of the barrel cover without manual intervention, greatly reduce the labor intensity of workers, and improve the work efficiency and labeling quality.

Description

Technical Field

[0001] This invention relates to the field of labeling technology, specifically to an in-mold labeling device for barrel lids. Background Technology

[0002] After the plastic buckets are manufactured, labels are affixed according to customer requirements. Existing labeling equipment has a relatively traditional structure, requiring the bucket lid to be placed on the labeling area and the label to be affixed by manually rotating the lid. This is labor-intensive, inefficient, and produces poor labeling quality. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides an in-mold labeling device for bucket lids, comprising:

[0004] The marking device includes a frame, a marking chamber located inside the frame, and vertical slide rails located on both sides of the marking chamber. The lower ends of the vertical slide rails are fixed to the frame, and the upper ends of the vertical slide rails are fixedly connected by crossbars.

[0005] A vertical marker-laying mechanism is provided on the horizontal bar. Both ends of the horizontal bar are slidably connected to a vertical slide rail via sliders. A first driving device is provided at the connection between the vertical slide rail and the horizontal bar. The first driving device is used to drive the horizontal bar to move vertically on the vertical slide rail.

[0006] The vertical mark-laying mechanism is located directly above the mark bin. The vertical mark-laying mechanism includes a second drive device, a mark-picking fixture, and a flipping mechanism. The second drive device is fixedly connected above the mark-picking fixture. A flipping mechanism is connected between the second drive device and the mark-picking fixture. The second drive device is used to drive the flipping mechanism to flip and achieve horizontal and vertical mark-laying.

[0007] The injection molding machine is located on one side of the labeling device;

[0008] A label moving device, located above the injection molding machine and the label dispensing device, and fixedly connected to the injection molding machine, includes a first conveying mechanism, a second conveying mechanism, and a third conveying mechanism. The first conveying mechanism is located above the second conveying mechanism and is arranged along a first direction. The first conveying mechanism is slidably connected to the second conveying mechanism. The second conveying mechanism is arranged along a second direction. One end of the first conveying mechanism is slidably connected to the third conveying mechanism. The third conveying mechanism is arranged along a third direction. A compatible in-mold labeling mechanism for both moving and fixed molds is fixedly connected to the bottom of the third conveying mechanism. The compatible in-mold labeling mechanism for both moving and fixed molds includes a cap-removing fixture and a cap-feeding label fixture.

[0009] Preferably, the label storage compartment includes a label storage fixing plate and a label storage mechanism. The two ends of the label storage fixing plate are fixedly connected to the frame, and a lifting cylinder is fixedly connected to the bottom of the label storage fixing plate along a third direction. The label storage fixing plate is provided with a through groove for the lifting cylinder to pass through.

[0010] The label storage mechanism includes a label top plate and a label compartment guide shaft. The label top plate and the label compartment guide shaft are located on the upper surface of the label compartment fixed plate along the third direction. The label top plate is located above the lifting cylinder along the third direction. The label compartment guide shaft is fixedly connected to the label compartment fixed plate. The label top plate is movably connected to the label compartment fixed plate through the label compartment guide shaft. The lifting cylinder passes through the through slot and drives the label top plate to move up and down along the third direction on the label compartment guide shaft.

[0011] Preferably, the label-taking fixture includes a receiving plate, on which multiple suction cups are fixedly connected, and the suction cups are connected to an external air source device.

[0012] Preferably, the second drive device is fixedly connected to the flipping mechanism, and the label-taking fixture is detachably connected to the flipping mechanism.

[0013] Preferably, the machine frame is also equipped with a conveyor belt that connects to an external mechanism. The conveyor belt is used to transport the labeled barrel caps to a preset location.

[0014] Preferably, the compatible in-mold labeling mechanism for both moving and fixed molds includes:

[0015] Fixed frame;

[0016] A rotary cylinder, housed within a fixed frame and fixedly connected to both sides of the fixed frame, includes a cylinder body and a rotating shaft that passes through the cylinder body and is rotatably connected to the cylinder body. A limit block and a hydraulic damper are provided on the top of the cylinder body. The limit block is fixedly connected to the rotating shaft, and the hydraulic dampers are located on both sides of the limit block. The rotating shaft is provided with blades that divide the cylinder body into a first chamber and a second chamber. The top of the rotating shaft is rotatably connected to the cylinder body via a bearing, and the bottom of the rotating shaft passes through a rotating platform and is fixedly connected to a bearing seat. The rotating platform is provided with a first air inlet and a second air inlet. The first air inlet is connected to the first chamber, and the second air inlet is connected to the second chamber.

[0017] The cylinder connecting base plate is located at the bottom of the bearing seat and is fixedly connected to the bearing seat through the jig rotating flange. The bottom of the cylinder connecting base plate is fixedly connected to the side posture cylinder and the jig aluminum strip through the jig connecting plate.

[0018] The side-position cylinder is connected to a lid-removing fixture on the side away from the fixture aluminum strip, and the fixture aluminum strip is fixedly connected to a bucket lid label-feeding fixture on the side away from the side-position cylinder.

[0019] Preferably, the lid removal fixture is disc-shaped and has several suction cups connected to an external air source device.

[0020] Preferably, both the first and second air inlets are equipped with external thread flow restrictors, which are connected to an external air source device.

[0021] Preferably, the side-positioning cylinder is equipped with a magnetic induction switch, the side-positioning cylinder is fixedly connected to the magnetic induction switch, and the magnetic induction switch is electrically connected to the controller.

[0022] Preferably, the bottom of the frame is equipped with casters.

[0023] Preferably, the first conveying mechanism includes a first linear guide rail and a first servo motor, the second conveying mechanism includes a second linear guide rail and a second servo motor, and the third conveying mechanism includes a third linear guide rail and a third servo motor.

[0024] The beneficial effects of this application are as follows: Compared with the prior art, the present invention can realize uninterrupted cyclic labeling operation on barrel lids, and the labeling of barrel lids can be completed without manual intervention, which greatly reduces the labor intensity of workers and improves work efficiency and labeling quality. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0028] Figure 3 This is an enlarged structural schematic diagram of the moving device of the present invention;

[0029] Figure 4 This is a schematic diagram of the vertical marker-laying mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram of the in-mold labeling mechanism compatible with both moving and fixed molds in this invention.

[0031] In the picture:

[0032] 1. Marking device;

[0033] Rack 101;

[0034] 102 Standard Warehouse; 1021 Standard Warehouse Fixing Plate; 1022 Label Top Plate; 1023 Standard Warehouse Guide Shaft;

[0035] 103 Vertical slide rail; 1031 Horizontal bar; 1032 Slider; 1033 First drive device;

[0036] 104 Vertical mark-laying mechanism; 1041 Second drive device; 1042 Mark-picking fixture; 1043 Tilting mechanism;

[0037] 105 conveyor belt;

[0038] 106 swivel wheels;

[0039] 2 injection molding machines;

[0040] 3. Mobile devices;

[0041] 301 First linear guide rail; 302 First servo motor;

[0042] 303 Second linear guide rail; 304 Second servo motor;

[0043] 305 Third linear guide rail; 306 Third servo motor;

[0044] 307 compatible with in-mold labeling mechanism for both moving and fixed molds;

[0045] 3071 Fixed frame; 30711 Fixture rotation fixing plate; 30712 Fixture rotation connecting plate; 30713 Side fixing plate;

[0046] 3072 Rotary cylinder; 30721 Cylinder body; 30722 Rotary shaft; 30723 Limit block; 30724 Hydraulic damper; 30725 First air inlet; 30726 Second air inlet; 30727 Rotary swing table; 30728 External thread flow limiter; 30729 Bearing seat;

[0047] 3073 Cylinder connecting base plate; 30731 Fixture rotating flange; 30732 Fixture connecting plate; 30733 Side posture cylinder; 307331 Magnetic induction switch; 307332 Lid removal fixture; 30734 Fixture aluminum strip; 307341 Bucket lid label feeding fixture. Detailed Implementation

[0048] The following drawings disclose several embodiments of the present invention. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0049] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0050] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed by this invention.

[0051] Example 1

[0052] Please see Figure 1 This embodiment provides an in-mold labeling device for barrel lids, which solves the technical problems of high labor intensity, low efficiency, and poor labeling quality when relying on manual labor for labeling barrel lids. The in-mold labeling device for barrel lids provided in this embodiment includes:

[0053] The marking device 1 includes a frame 101, a marking chamber 102 located inside the frame 101, and vertical slide rails 103 located on both sides of the marking chamber 102. The lower ends of the vertical slide rails 103 are welded to the frame 101, and the upper ends of the vertical slide rails 103 can be welded or screwed to a crossbar 1031. A vertical marking mechanism 104 is provided on the crossbar 1031. Both ends of the crossbar 1031 are slidably connected to the vertical slide rails 103 via sliders 1032. A first driving device 1033 is provided at the connection between the vertical slide rails 103 and the crossbar 1031. The first driving device 1033 is used to drive the crossbar 1031 to move vertically along a third direction on the vertical slide rails 103. The vertical marking mechanism 104 is located on the marking chamber. Above the storage compartment 102, the vertical labeling mechanism 104 includes a second drive device 1041, a label-collecting fixture 1042, and a flipping mechanism 1043. The second drive device 1041 is located above the label-collecting fixture 1042, and the flipping mechanism 1043 connects the second drive device 1041 and the label-collecting fixture 1042. The second drive device 1041 and the flipping mechanism 1043 are fixedly connected, while the label-collecting fixture 1042 and the flipping mechanism 1043 are detachably connected. The second drive device 1041 is used to drive the flipping mechanism 1043 to flip, achieving both horizontal and vertical labeling. The label-collecting fixture 1042 includes a receiving plate, on which multiple suction cups are fixedly connected. The suction cups are connected to an external air source device. Inside the frame 101, there is also a conveyor belt 105 connected to an external mechanism. The conveyor belt 105 is used to transport the labeled bucket lids to a preset location.

[0054] Injection molding machine 2 is located on one side of labeling device 1;

[0055] The label moving device 3 is located above the injection molding machine 2 and the label placement device 1, and is fixedly connected to the injection molding machine 2. It includes a first conveying mechanism, a second conveying mechanism, and a third conveying mechanism. The first conveying mechanism is located above the second conveying mechanism and is arranged along a first direction. The first conveying mechanism is slidably connected to the second conveying mechanism. The second conveying mechanism is arranged along a second direction. One end of the first conveying mechanism is slidably connected to the third conveying mechanism. The third conveying mechanism is arranged along a third direction. The bottom of the third conveying mechanism is provided with a compatible in-mold labeling mechanism 307 for both moving and fixed molds. The first conveying mechanism includes a first linear guide rail 301 and a first servo motor 302. The second conveying mechanism includes a second linear guide rail 303 and a second servo motor 304. The third conveying mechanism includes a third linear guide rail 305 and a third servo motor 306.

[0056] like Figure 1 As shown, for ease of understanding of this embodiment, a direction axis is established, with PA direction as the first direction, PB direction as the second direction, and PC direction as the third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The first direction and the second direction are both parallel to the upper surface of the injection molding machine 2, and the third direction is perpendicular to the upper surface of the injection molding machine 2.

[0057] The label storage compartment 102 includes a label storage fixing plate 1021 and a label storage mechanism. The two ends of the label storage fixing plate 1021 are fixedly connected to the frame 101 respectively. A lifting cylinder is fixedly connected to the bottom of the label storage fixing plate 1021 along the third direction. The label storage fixing plate 1021 is provided with a through groove for the lifting cylinder to pass through.

[0058] Each tag storage mechanism includes a tag top plate 1022 and a tag compartment guide shaft 1023. The tag top plate 1022 and the tag compartment guide shaft 1023 are located on the upper surface of the tag compartment fixing plate 1021 along the third direction. The tag top plate 1022 is located above the lifting cylinder along the third direction. The tag compartment guide shaft 1023 is fixedly connected to the tag compartment fixing plate 1021. The tag top plate 1022 is movably connected to the tag compartment fixing plate 1021 through the tag compartment guide shaft 1023. The lifting cylinder passes through the through slot and drives the tag top plate 1022 to move up and down along the third direction on the tag compartment guide shaft 1023.

[0059] Using the above-described mechanism, before use, the label is placed in the label compartment 102. During use, the second drive device 1041 first drives the label-collecting fixture 1042 to descend along the vertical slide rail 103 to a predetermined height. Then, the lifting cylinder drives the label top plate 1022, on which the label is placed, to rise to the predetermined height, aligning the label-collecting fixture 1042 with the label top plate 1022. The label contacts the suction cup at the bottom of the label-collecting fixture 1042. The air source device starts working, generating a vacuum negative pressure that is delivered to the suction cup, creating a vacuum negative pressure state that allows the suction cup to adsorb the label. After the suction cup adsorbs the label, the lifting cylinder retracts, causing the label top plate 1022 to retract. Then, the second drive device 1041 drives the label-collecting fixture 1042 to retract along the vertical slide rail 103 to the initial height. Finally, the second drive device 1041 drives the flipping mechanism 1043 to flip, causing the label-collecting fixture 1042 to... The labeling mechanism 307, which is compatible with the in-mold labeling mechanism 307, changes from a horizontal to a vertical position. Simultaneously, under the action of the label moving device 3, the label is moved to the front of the label-taking fixture 1042. The label is simultaneously adsorbed by both the cap-taking fixture 307332 and the label-taking fixture 1042. At this point, the external air source connected to the label-taking fixture 1042 is shut off. After the label detaches from the label-taking fixture 1042, it is transferred to the cap-taking fixture 307332. The cap-taking fixture 307332, after adsorbing the label, moves to the injection molding machine 2 under the action of the label moving device 3 to achieve labeling of the barrel cap. After labeling, the barrel cap is transferred by the cap-feeding label fixture 307341 on the in-mold labeling mechanism 307 to the conveyor belt 105 inside the frame 101. The conveyor belt 105 then transports the barrel cap to a preset location. This invention enables fully automatic labeling of barrel caps, completing labeling in one go without manual intervention, greatly reducing worker labor intensity and improving work efficiency and labeling quality.

[0060] Example 2

[0061] Please see Figure 1 This embodiment provides an in-mold labeling device for barrel lids, which solves the technical problems of high labor intensity, low efficiency, and poor labeling quality when relying on manual labor for labeling barrel lids. The in-mold labeling device for barrel lids provided in this embodiment is based on the above-mentioned embodiment one, with some structural improvements. Compared with the in-mold labeling device for barrel lids provided in embodiment one, the specific improvements are as follows:

[0062] The compatible in-mold labeling mechanism 307 includes:

[0063] The fixing frame 3071 includes a fixture rotation fixing plate 30711, a fixture rotation connecting plate 30712, and a side fixing plate 30713. The fixture rotation connecting plate 30712 is located above the fixture rotation fixing plate 30711 and is fixedly connected to the fixture rotation fixing plate 30711. The side fixing plates 30713 are located on both sides of the fixture rotation fixing plate 30711 and are fixedly connected to the fixture rotation fixing plate 30711.

[0064] A rotary cylinder 3072 is housed within a fixed frame 3071 and fixedly connected to both sides of the fixed frame 3071. It includes a cylinder body 30721 and a rotating shaft 30722 that passes through and is rotatably connected to the cylinder body 30721. A limiting block 30723 and a hydraulic buffer 30724 are provided at the top of the cylinder body 30721. The limiting block 30723 is fixedly connected to the rotating shaft 30722, and the hydraulic buffer 30724 is located on both sides of the limiting block 30723. Blades are provided on the rotating shaft 30722, dividing the cylinder body 30721 into a first chamber and a second chamber. The top of the rotating shaft 30722 is rotatably connected to the cylinder body 30721 via a bearing. The bottom of the rotating shaft 30722 passes through the rotating platform 30727 and is fixedly connected to the bearing seat 30729. The rotating platform 30727 is provided with a first air inlet 30725 and a second air inlet 30726. The first air inlet 30725 is connected to the first chamber, and the second air inlet 30726 is connected to the second chamber. Both the first air inlet 30725 and the second air inlet 30726 are provided with external thread flow restrictors 30728, which are connected to an external air source device.

[0065] The cylinder connecting base plate 3073 is located at the bottom of the bearing housing 30729 and is fixedly connected to the bearing housing 30729 via the fixture rotating flange 30731. The bottom of the cylinder connecting base plate 3073 is fixedly connected to the side posture cylinder 30733 and the fixture aluminum strip 30734 via the fixture connecting plate 30732. The side posture cylinder 30733 is equipped with a magnetic induction switch 307331, which is fixedly connected to the magnetic induction switch 307331. The magnetic induction switch 307331 is electrically connected to the controller.

[0066] The side-positioning cylinder 30733 is connected to a lid-removing fixture 307332 on the side away from the fixture aluminum strip 30734. The fixture aluminum strip 30734 is fixedly connected to a bucket lid label-feeding fixture 307341 on the side away from the side-positioning cylinder 30733. Both the lid-removing fixture 307332 and the bucket lid label-feeding fixture 307341 are equipped with suction cups, which are connected to an external air source device.

[0067] The lid removal fixture 307332 is disc-shaped and has several suction cups on it, which are connected to an external air source device.

[0068] Using the aforementioned mechanism, in this embodiment, the rotary cylinder 3072 drives the bearing housing 30729 to rotate, which in turn drives the side posture cylinder 30733 and the fixture aluminum strip 30734 to rotate together. The direction of rotation is determined by the air pressure difference between the first and second chambers inside the rotary cylinder 3072, and the rotation angle is determined by the limiting block 30723 and the hydraulic buffer 30724. The limiting block 30723 is fixedly connected to the rotating shaft 30722. As the rotating shaft 30722 rotates, the limiting block 30723 abuts against the hydraulic buffer 30724. After the magnetic induction switch 307331 senses this, it transmits an electrical signal to the controller to close the first air inlet 30725 and the second air inlet 30726, thereby controlling the rotating shaft 30722 to stop rotating. This device can adjust the hydraulic buffer... Position 30724 controls the rotation angle of the entire device to be between 0-270°, allowing the cap-removing fixture 307332 and the cap-labeling fixture 307341 to interchange directions. When the cap-removing fixture 307332, after adsorbing the label, moves to the injection molding machine 2 under the action of the label moving device 3 to achieve cap labeling. The cap-removing fixture 307332 and the cap-labeling fixture 307341 interchange directions under the drive of the rotary cylinder 3072. After labeling, the cap is transferred by the cap-labeling fixture 307341 to the conveyor belt 105 inside the frame 101 and then transported to the preset location by the conveyor belt 105. By combining the cap-removing fixture 307332 and the cap-labeling fixture 307341 on the same compatible in-mold labeling mechanism 307, the floor space is greatly reduced.

[0069] After the first labeling of the barrel lid is completed, the labeled barrel lid is transferred by the barrel lid label feeding fixture 307341 on the in-mold labeling mechanism 307 to the conveyor belt 105 inside the frame 101. The conveyor belt 105 then transports the barrel lid to a preset location. The side posture cylinder 30733 and the fixture aluminum strip 30734 are reversed 180° under the drive of the rotary cylinder 3072, so that the side posture cylinder 30733 is connected to the side away from the fixture aluminum strip 30734. A cap-removing fixture 307332 faces a label-removing fixture 1042, and a side-positioning cylinder 30733 moves to the front of the label-removing fixture 1042 along with the label-moving device 3. The label is simultaneously attracted by the cap-removing fixture 307332 and the label-removing fixture 1042. After the label is detached from the label-removing fixture 1042, it is transferred to the cap-removing fixture 307332. After attracting the label, the cap-removing fixture 307332 moves into the injection molding machine 2 under the action of the label-moving device 3 to realize the cyclic labeling of the barrel cap.

[0070] Compared to Example 1, this example enables uninterrupted, cyclical labeling of bucket lids without any manual intervention, significantly reducing labor intensity and improving work efficiency and labeling quality.

[0071] Example 3

[0072] Please see Figure 1 This embodiment provides an in-mold labeling device for barrel lids, which solves the technical problems of high labor intensity, low efficiency, and poor labeling quality when relying on manual labor for labeling barrel lids. The in-mold labeling device for barrel lids provided in this embodiment is based on the above-mentioned Embodiment 1 and Embodiment 2, with some structural improvements. Compared with the in-mold labeling devices for barrel lids provided in Embodiment 1 and Embodiment 2, the specific improvements are as follows:

[0073] The frame 101 is equipped with casters 106 at the bottom. The frame 101, the first linear guide rail 301, the second linear guide rail 303, and the third linear guide rail 305 are all made of aluminum alloy. The lower end of the vertical slide rail 103 is fixed to the frame 101 by screwing, and the upper end of the vertical slide rail 103 is fixed to the crossbar 1031 by screwing.

[0074] With the help of the above-mentioned mechanism, compared with Embodiment 1 and Embodiment 2, this embodiment is lighter and more convenient to move because the frame 101, the first linear guide rail 301, the second linear guide rail 303 and the third linear guide rail 305 are all made of aluminum alloy and universal wheels 106 are installed at the bottom of the frame 101. The screw connection method facilitates the disassembly and installation of parts.

[0075] The above are merely embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A labeling device for an in-mold container lid, characterized in that, include: A marking device (1) includes a frame (101), a marking chamber (102) located inside the frame (101), and vertical slide rails (103) located on both sides of the marking chamber (102). The lower end of the vertical slide rail (103) is fixed to the frame (101), and the upper end of the vertical slide rail (103) is fixedly connected by a crossbar (1031). A vertical marking mechanism (104) is provided on the crossbar (1031). The two ends of the crossbar (1031) are slidably connected to the vertical slide rail (103) by sliders (1032). A first driving device (1033) is provided at the connection between the vertical slide rail (103) and the crossbar (1031). The first driving device (1033) is used to drive the horizontal bar 1031 to move vertically on the vertical slide rail 103. The vertical marking mechanism (104) is located directly above the marking bin (102). The vertical marking mechanism (104) includes a second driving device (1041), a marking fixture (1042), and a flipping mechanism (1043). The second driving device (1041) is fixedly connected above the marking fixture (1042). The flipping mechanism (1043) is connected between the second driving device (1041) and the marking fixture (1042). The second driving device (1041) can be used to drive the flipping mechanism (1043) to flip and realize horizontal and vertical marking. The injection molding machine (2) is located on one side of the labeling device (1); The label moving device (3) is located above the injection molding machine (2) and the label placement device (1) and is fixedly connected to the injection molding machine (2). It includes a first conveying mechanism, a second conveying mechanism and a third conveying mechanism. The first conveying mechanism is located above the second conveying mechanism and is arranged along a first direction. The first conveying mechanism is slidably connected to the second conveying mechanism. The second conveying mechanism is arranged along a second direction. One end of the first conveying mechanism is slidably connected to the third conveying mechanism. The third conveying mechanism is arranged along a third direction. The bottom of the third conveying mechanism is fixedly connected to a compatible moving and fixed mold in-mold labeling mechanism (307). The compatible moving and fixed mold in-mold labeling mechanism (307) includes a cap-removing fixture (307332) and a cap-feeding label fixture (307341). The compatible in-mold labeling mechanism (307) moves to the front of the label-taking fixture (1042) under the action of the label moving device (3). After the label is removed from the label-taking fixture (1042), it is transferred to the cap-taking fixture (307332). When the cap-taking fixture (307332) after adsorbing the label moves into the injection molding machine (2) under the action of the label moving device (3) to realize the labeling of the bucket cap, the cap-taking fixture (307332) and the cap-tapping fixture (307341) exchange directions under the drive of the rotary cylinder (3072).

2. The in-mold labeling device for barrel lids according to claim 1, characterized in that, The label storage compartment (102) includes a label storage fixing plate (1021) and a label storage mechanism. Both ends of the label storage fixing plate (1021) are fixedly connected to the frame (101). A lifting cylinder is fixedly connected to the bottom of the label storage fixing plate (1021) along the third direction. The label storage fixing plate (1021) is provided with a through groove for the lifting cylinder to pass through. Each of the label storage mechanisms includes a label top plate (1022) and a label compartment guide shaft (1023). The label top plate (1022) and the label compartment guide shaft (1023) are disposed on the upper surface of the label compartment fixing plate (1021) along the third direction. The label top plate (1022) is disposed above the lifting cylinder along the third direction. The label compartment guide shaft (1023) is fixedly connected to the label compartment fixing plate (1021). The label top plate (1022) is movably connected to the label compartment fixing plate (1021) through the label compartment guide shaft (1023). The lifting cylinder passes through the through slot and drives the label top plate (1022) to move up and down along the third direction on the label compartment guide shaft (1023).

3. The in-mold labeling device for barrel lids according to claim 1, characterized in that, The label-taking fixture (1042) includes a receiving plate, on which multiple suction cups are fixedly connected, and the suction cups are connected to an external air source device.

4. The in-mold labeling device for barrel lids according to claim 1, characterized in that, The second driving device (1041) is fixedly connected to the flipping mechanism (1043), and the label-taking fixture (1042) is detachably connected to the flipping mechanism (1043).

5. The in-mold labeling device for barrel lids according to claim 1, characterized in that, The frame (101) is also equipped with a conveyor belt (105) that is connected to an external mechanism. The conveyor belt (105) is used to transport the labeled bucket lid to a preset location.

6. The in-mold labeling device for barrel lids according to claim 1, characterized in that, The compatible in-mold labeling mechanism (307) includes: Fixed frame (3071); A rotary cylinder (3072) is disposed within a fixed frame (3071) and fixedly connected to both sides of the fixed frame (3071). It includes a cylinder body (30721) and a rotating shaft (30722) that passes through the cylinder body (30721) and is rotatably connected to it. A limiting block (30723) and a hydraulic buffer (30724) are provided at the top of the cylinder body (30721). The limiting block (30723) is fixedly connected to the rotating shaft (30722), and the hydraulic buffers (30724) are located on both sides of the limiting block (30723). The rotating shaft (30722)... 722) is provided with blades, which divide the cylinder body (30721) into a first chamber and a second chamber. The top of the rotating shaft (30722) is rotatably connected to the cylinder body (30721) through a bearing. The bottom of the rotating shaft (30722) passes through the rotating platform (30727) and is fixedly connected to the bearing seat (30729). The rotating platform (30727) is provided with a first air inlet (30725) and a second air inlet (30726). The first air inlet (30725) is connected to the first chamber, and the second air inlet (30726) is connected to the second chamber. The cylinder connecting base plate (3073) is located at the bottom of the bearing seat (30729) and is fixedly connected to the bearing seat (30729) through the jig rotating flange (30731). The bottom of the cylinder connecting base plate (3073) is fixedly connected to the side posture cylinder (30733) and the jig aluminum strip (30734) through the jig connecting plate (30732). The side-position cylinder (30733) is connected to the lid-removing fixture (307332) on the side away from the fixture aluminum strip (30734), and the bucket lid label-feeding fixture (307341) is fixedly connected to the fixture aluminum strip (30734) on the side away from the side-position cylinder (30733).

7. The in-mold labeling device for barrel lids according to claim 3, characterized in that, The lid removal fixture (307332) is disc-shaped and has several suction cups, which are connected to the external air source device.

8. The in-mold labeling device for barrel lids according to claim 3, characterized in that, Both the first air inlet (30725) and the second air inlet (30726) are equipped with external thread flow restrictors (30728), which are connected to the external air source device.

9. The in-mold labeling device for barrel lids according to claim 6, characterized in that, The side posture cylinder (30733) is equipped with a magnetic induction switch (307331), the side posture cylinder (30733) is fixedly connected to the magnetic induction switch (307331), and the magnetic induction switch (307331) is electrically connected to the controller.

10. The in-mold labeling device for barrel lids according to claim 1, characterized in that, The first conveying mechanism includes a first linear guide rail (301) and a first servo motor (302), the second conveying mechanism includes a second linear guide rail (303) and a second servo motor (304), and the third conveying mechanism includes a third linear guide rail (305) and a third servo motor (306).

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