An automatic labeling machine

Abstract

This invention relates to the field of labeling machine technology and provides an automatic labeling machine, including a worktable with a switching station disk rotatably connected to it. The machine also includes a feeding assembly, a discharging assembly, a label feeding assembly, a transmission assembly, and a drive assembly. A protective sleeve is fixed to the worktable, and the switching station disk is disposed within the protective sleeve. The protective sleeve has a feeding port, a discharging port, and a labeling port. A drive shaft is mounted on the switching station disk, and a station block is mounted on the drive shaft. The station block has three station slots, and a rotating disk is rotatably connected to the switching station disk at each station slot. The rotating disk has mounting slots, and clamping blocks are rotatably connected to the mounting slots. A bottom mounting frame is mounted on the bottom of the worktable. This invention can automatically complete the feeding, labeling, and unloading operations of polypropylene bottles, thereby improving the efficiency of polypropylene bottle labeling.

Description

Technical Field

[0001] This invention belongs to the field of labeling machine technology, and particularly relates to an automatic labeling machine. Background Technology

[0002] Polypropylene infusion bottles are medical devices used to administer intravenous fluids into patients. After the polypropylene bottles are filled and sealed, they need to be labeled with information such as the production date and type.

[0003] A labeling mechanism for plastic bottle production, with publication number CN 219487946 U, involves opening a conveyor device and placing the plastic bottle on it for transport. When the plastic bottle enters between a baffle and a dust removal cloth, the second and third rotating rollers, operating in rotary motor mode, rotate. This causes the brushes on the dust removal cloth to remove dust from the plastic bottle. The rotation of the dust removal cloth also drives the plastic bottle to rotate, thus facilitating its rotation. When the bottle enters between the labeling frame and the support frame, the first rotating roller facilitates its rotation, allowing the labeling machine to easily apply labels to the bottle.

[0004] Although the above application can achieve the labeling function, the distance between bottles on the conveying device cannot be precisely controlled, and the bottles are limited only by the first rotating roller when being labeled. Furthermore, the bottles must also rotate with the first rotating roller, which causes the bottles to tilt. This reduces the labeling accuracy of the labeling machine body on the bottles. Therefore, the above method has the problem of low labeling accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic labeling machine that solves the problem that the distance between bottles in existing conveying devices cannot be accurately controlled, thereby reducing the labeling accuracy of the labeling machine body.

[0006] This invention is implemented as follows: an automatic labeling machine includes a worktable, on which a switching station panel is rotatably connected, and further includes:

[0007] Feeding assembly, unloading assembly, label feeding assembly, transmission assembly, and drive assembly;

[0008] A protective cover is fixed on the workbench, and the switching station panel is set inside the protective cover. The protective cover is provided with a feed inlet, a discharge outlet and a labeling port.

[0009] A drive shaft is installed on the switching station plate, a station block is installed on the drive shaft, and three station slots are provided on the station block. A rotating disk is rotatably connected to the switching station plate at the station slot, and an installation slot is provided on the rotating disk. A clamping block is rotatably connected to the installation slot.

[0010] The bottom of the workbench is equipped with a bottom mounting frame, and the drive assembly is set on the bottom mounting frame. The drive assembly is used to drive the drive shaft to rotate intermittently by 120°. The drive assembly is used to drive the rotating disk located at the label supply assembly to rotate. The transmission assembly is set on the rotating disk. When the rotating disk is located at the label supply assembly, the transmission assembly drives the clamping block to rotate and fix the polypropylene bottle.

[0011] The feeding assembly, unloading assembly, and label feeding assembly are all mounted on the workbench. The feeding assembly is used to supply polypropylene bottles to the rotating disk, the label feeding assembly is used to affix labels to the rotating polypropylene bottles, and the unloading assembly is used to remove the labeled polypropylene bottles from the workstation slot.

[0012] In a further technical solution, the feeding assembly includes a first guide baffle and a first belt conveyor. Two first guide baffles are installed in parallel at the feed inlet on the worktable, and the first belt conveyor is disposed between the two first guide baffles.

[0013] A further technical solution is provided, wherein the label feeding assembly includes a material rack, a material distribution block, a material pulling shaft, a rubber shaft, a guide shaft, and a rubber pressure roller. The material rack, the material pulling shaft, the rubber shaft, and the guide shaft are all rotatably connected to the worktable. A servo motor is installed at the bottom of the worktable, and the rotating end of the servo motor is connected to the material pulling shaft. There is pressure between the material pulling shaft and the rubber shaft. A material tray is provided on the material rack. One end of the material distribution block is set with an acute angle. A rubber pressure roller is rotatably connected to the material distribution block. The material strip of the material tray first passes around the guide shaft, then passes through the gap between the rubber pressure roller and the material distribution block, and then passes through the gap between the material pulling shaft and the rubber shaft.

[0014] In a further technical solution, the unloading assembly includes a second belt conveyor and a push rod. The second belt conveyor is set on the workbench and located at the discharge port. A first clearance groove is provided in the middle of the work station block. The push rod is fixed on the discharge port and extends into the first clearance groove.

[0015] A further technical solution includes a sliding disc, a pull rope, a tension spring, and a T-shaped push block. The rotating disc has a first guide groove, on which the sliding disc is slidably connected. The switching station disc has a second clearance groove to allow the sliding disc to move up and down. A first spring is also provided within the first guide groove. The rotating disc has a wire groove, and the pull rope is positioned within this groove, with both ends connected to the clamping block and the lower end of the sliding disc, respectively. Both ends of the tension spring are connected to the clamping block and the bottom of the mounting groove, respectively. The workstation is equipped with a second guide groove. The T-shaped push block is slidably connected in the second guide groove, and one end of the T-shaped push block extends into the second clearance groove and slides with the sliding disk. The bottom of the sliding disk is chamfered. The mating surface between the T-shaped push block and the sliding disk is inclined. A second spring is provided in the second guide groove near the end of the sliding disk. The other end of the T-shaped push block extends out of the rotating disk. An annular clearance groove for avoiding the T-shaped push block is provided on the worktable. A wedge is installed in the annular clearance groove near the labeling opening.

[0016] A further technical solution includes a drive assembly comprising a swing plate, a drive disk, a motor, a first transmission shaft, a first one-way transmission assembly, and a second one-way transmission assembly. A rotating shaft is fixed to the swing plate and rotatably connected to a bottom mounting bracket. An elongated hole is provided on the swing plate. The drive disk is rotatably connected to the bottom mounting bracket. The motor is fixed to the other end of the bottom mounting bracket, and its rotating end is connected to the drive disk. A push shaft is fixed to the drive disk and slidably connected to the elongated hole. The lower end of the drive shaft is connected to the first transmission shaft via the first one-way transmission assembly. The first one-way transmission assembly reciprocates through the first transmission shaft. The first drive shaft is intermittently rotated 120°. A gear is fixed on the first drive shaft. One end of the swing plate is provided with teeth that mesh with the gear, and the other end of the swing plate is set as a semi-circle. A second drive shaft is rotatably connected to the switching station plate. The upper end of the second drive shaft extends into the second clearance groove and slides with the sliding plate. A third drive shaft is connected to the second drive shaft through a second one-way transmission assembly. A rubber transmission wheel is fixed on the third drive shaft. The rubber transmission wheel is in frictional contact with the semi-circular end of the swing plate. The second one-way transmission assembly drives the second drive shaft to rotate in one direction by reciprocating the third drive shaft.

[0017] In a further technical solution, the first one-way transmission assembly includes a first ratchet, a first slider, and a third spring. A first mounting cavity is provided on the drive shaft, the first ratchet is disposed in the first mounting cavity and fixed on the first transmission shaft, a first sliding groove is provided on the drive shaft, the first slider is slidably connected to the first sliding groove, one end of the first slider is engaged with the first ratchet, and a third spring is also provided in the first sliding groove.

[0018] In a further technical solution, the second one-way transmission assembly includes a second ratchet, a second slider, and a third spring. A second mounting cavity is provided on the second transmission shaft. The second ratchet is disposed in the second mounting cavity and fixed on the third transmission shaft. A second sliding groove is provided on the second transmission shaft. The second slider is slidably connected to the second sliding groove. One end of the second slider meshes with the second ratchet. A third spring is also provided in the second sliding groove.

[0019] This invention provides an automatic labeling machine. A feeding assembly supplies polypropylene bottles to a rotating disk via an inlet. Simultaneously, the polypropylene bottles are positioned in a work station slot. A drive assembly first drives a drive shaft to rotate intermittently by 120°. This drive shaft then drives a switching work station disk and a work station block to rotate by 120°, which in turn rotates the polypropylene bottles by 120°, completing one work station switch. When the rotating disk is positioned at the label feeding assembly via the drive shaft, the transmission assembly drives a clamping block to rotate and fix the polypropylene bottle. The drive assembly then drives the rotating disk at the label feeding assembly to rotate, allowing the label feeding assembly to affix labels to the rotating polypropylene bottles, thus completing the labeling process. Subsequently, the switching work station disk and work station block perform another 120° work station switch. Simultaneously with the work station switch, a feeding assembly removes the labeled polypropylene bottles from the work station slot, thus completing the feeding, labeling, and unloading operations for polypropylene bottles, thereby improving the efficiency of polypropylene bottle labeling. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an automatic labeling machine provided in an embodiment of the present invention;

[0021] Figure 2 Provided for embodiments of the present invention Figure 1 A schematic diagram of the structure on the right side;

[0022] Figure 3 Provided for embodiments of the present invention Figure 1 Internal structure diagram;

[0023] Figure 4 Provided for embodiments of the present invention Figure 3 A magnified structural diagram of A in the middle;

[0024] Figure 5 Provided for embodiments of the present invention Figure 4 A magnified structural diagram of B in the diagram;

[0025] Figure 6 Provided for embodiments of the present invention Figure 4 A magnified structural diagram of C;

[0026] Figure 7 Provided for embodiments of the present invention Figure 4 A schematic diagram of the structure in which the sliding disk and the T-shaped push block work together.

[0027] In the attached diagram: Workbench 101, switching station panel 102, drive shaft 103, station block 104, station slot 105, protective sleeve 106, feed inlet 107, discharge outlet 108, labeling port 109, bottom mounting bracket 110, rotating disk 111, mounting slot 112, clamping block 113, feeding assembly 2, first guide baffle 201, first belt conveyor 202, unloading assembly 3, second belt conveyor 301, first clearance groove 302, push rod 303, second guide baffle 304, label feeding assembly 4, material rack 401, material tray 402, material distribution block 403, pulling shaft 404, rubber shaft 405, guide shaft 406, rubber pressure roller 407, transmission assembly 5, first guide slide 501, sliding disk 502, first spring 503, wire groove. 504, pull rope; 505, tension spring; 506, second clearance groove; 507, annular clearance groove; 508, wedge; 509, second guide groove; 510, T-shaped push block; 511, second spring; 512, drive assembly 6, swing plate; 601, elongated hole; 602, drive disc; 603, push shaft; 604, motor; 605, rotating shaft; 606, first transmission shaft; 607, gear; 608, second transmission shaft; 609, third transmission shaft; 610, rubber transmission wheel; 611, first one-way transmission assembly 7, first mounting cavity; 701, first ratchet; 702, first groove; 703, first slider; 704, third spring; 705, second one-way transmission assembly 8, second mounting cavity; 801, second ratchet; 802, second groove; 803, second slider; 804, third spring; 805. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0030] like Figures 1-4 As shown, an automatic labeling machine according to an embodiment of the present invention includes a worktable 101, on which a switching station disk 102 is rotatably connected, and further includes:

[0031] 2. Feeding component; 3. Unloading component; 4. Label feeding component; 5. Transmission component; and 6. Drive component;

[0032] A protective sleeve 106 is fixed on the workbench 101, and the switching station panel 102 is set inside the protective sleeve 106. The protective sleeve 106 is provided with a feed inlet 107, a discharge outlet 108 and a labeling outlet 109.

[0033] A drive shaft 103 is mounted on the switching station plate 102, a station block 104 is mounted on the drive shaft 103, and three station slots 105 are provided on the station block 104. A rotating disk 111 is rotatably connected to the switching station plate 102 at the station slots 105. An installation slot 112 is provided on the rotating disk 111, and a clamping block 113 is rotatably connected to the installation slot 112.

[0034] The bottom of the workbench 101 is equipped with a bottom mounting bracket 110. The drive assembly 6 is mounted on the bottom mounting bracket 110. The drive assembly 6 is used to drive the drive shaft 103 to rotate intermittently by 120°. The drive assembly 6 is used to drive the rotating disk 111 located at the label supply assembly 4 to rotate. The transmission assembly 5 is mounted on the rotating disk 111. When the rotating disk 111 is located at the label supply assembly 4, the transmission assembly 5 drives the clamping block 113 to rotate and fix the polypropylene bottle.

[0035] The feeding component 2, unloading component 3 and label feeding component 4 are all mounted on the workbench 101. The feeding component 2 is used to supply polypropylene bottles to the rotating disk 111. The label feeding component 4 is used to affix labels to the rotating polypropylene bottles. The unloading component 3 is used to remove the labeled polypropylene bottles from the work station slot 105.

[0036] In this embodiment of the invention, during use, the feeding assembly 2 supplies polypropylene bottles to the rotating disk 111 through the inlet 107. Simultaneously, the polypropylene bottles are on the work station slot 105. The driving assembly 6 first drives the driving shaft 103 to rotate intermittently by 120°. The driving shaft 103 then drives the switching work station disk 102 and the work station block 104 to rotate by 120°, thereby rotating the polypropylene bottles by 120°, thus completing one work station switch. When the transmission assembly 5, through the driving shaft 103, drives the rotating disk 111 to be positioned at the label supply assembly 4, it drives the clamping block 11. 3. The polypropylene bottle is rotated and fixed. The drive component 6 then drives the rotating disk 111 located at the label supply component 4 to rotate. The label supply component 4 affixes the label to the rotating polypropylene bottle, thereby completing the labeling of the polypropylene bottle. Then, the switching station disk 102 and the station block 104 perform another 120° station switch. At the same time as the station switch, the unloading component 3 removes the labeled polypropylene bottle from the station slot 105, thereby completing the feeding, labeling and unloading operations of the polypropylene bottle, thereby improving the working efficiency of polypropylene bottle labeling.

[0037] like Figure 1 As shown, in a preferred embodiment of the present invention, the feeding assembly 2 includes a first guide baffle 201 and a first belt conveyor 202. Two first guide baffles 201 are installed in parallel at the feed inlet on the workbench 101, and the first belt conveyor 202 is disposed between the two first guide baffles 201.

[0038] In this embodiment of the invention, a polypropylene bottle is placed on a first belt conveyor 202, and the first belt conveyor 202 conveys the polypropylene bottle to a rotating disk 111 under the guidance of a first guide baffle 201.

[0039] like Figure 1 and Figure 2 As shown, in a preferred embodiment of the present invention, the label feeding assembly 4 includes a material rack 401, a material distribution block 403, a material pulling shaft 404, a rubber shaft 405, a guide shaft 406, and a rubber pressure roller 407. The material rack 401, the material pulling shaft 404, the rubber shaft 405, and the guide shaft 406 are all rotatably connected to the worktable 101. A servo motor is installed at the bottom of the worktable 101, and the rotating end of the servo motor is connected to the material pulling shaft 404. There is pressure between the material pulling shaft 404 and the rubber shaft 405. A material tray 402 is provided on the material rack 401. One end of the material distribution block 403 is set with an acute angle. The rubber pressure roller 407 is rotatably connected to the material distribution block 403. The material strip of the material tray 402 first passes around the guide shaft 406, then passes through the gap between the rubber pressure roller 407 and the material distribution block 403, and then passes through the gap between the material pulling shaft 404 and the rubber shaft 405.

[0040] In this embodiment of the invention, the servo motor is connected to the PLC controller, and the PLC controller is connected to the photoelectric sensor installed on the workbench 101. When the photoelectric sensor detects that there is a polypropylene bottle at the labeling port 109, the PLC controller receives the signal from the photoelectric sensor and then drives the servo motor to rotate by the length of a label. The servo motor drives the material pulling shaft 404 to rotate. The material pulling shaft 404, in conjunction with the rubber shaft 405, pulls the bottom paper of the material strip, thereby pulling the material strip. When the label on the material strip passes through the acute angle on the separating block 403, it separates from the bottom paper. The rubber pressure roller 407 presses the label onto the polypropylene bottle, and the label is completely pasted onto the polypropylene bottle when the polypropylene bottle rotates.

[0041] like Figures 1-3 As shown, in a preferred embodiment of the present invention, the unloading assembly 3 includes a second belt conveyor 301 and a push rod 303. The second belt conveyor 301 is disposed on the workbench 101 and located at the discharge port 108. A first clearance groove 302 is provided in the middle of the workstation block 104. The push rod 303 is fixed on the discharge port 108 and extends into the first clearance groove 302.

[0042] In this embodiment of the invention, when the work station block 104 drives the polypropylene bottle to switch work stations, the push rod 303 moves relative to the polypropylene bottle, thereby pushing the polypropylene bottle out of the work station slot 105. The polypropylene bottle moves along the push rod 303 to the second belt conveyor 301, and the second belt conveyor 301 unloads the polypropylene bottle.

[0043] like Figure 4 and Figure 7As shown, in a preferred embodiment of the present invention, the transmission assembly 5 includes a sliding disk 502, a pull rope 505, a tension spring 506, and a T-shaped push block 511. A first guide groove 501 is provided on the rotating disk 111, and the sliding disk 502 is slidably connected to the first guide groove 501. A second clearance groove 507 is provided on the switching station disk 102 to allow the sliding disk 502 to move up and down. A first spring 503 is also provided in the first guide groove 501. A wire groove 504 is provided on the rotating disk 111, and the pull rope 505 is disposed in the wire groove 504. Both ends of the pull rope 505 are respectively connected to the clamping block 113 and the lower end of the sliding disk 502. Both ends of the tension spring 506 are respectively connected to the clamping block 113 and the bottom of the mounting groove 112. The switching workstation 102 is connected to the second guide groove 510. The T-shaped push block 511 is slidably connected in the second guide groove 510, and one end of the T-shaped push block 511 extends into the second clearance groove 507 and slides in cooperation with the sliding disk 502. The bottom of the sliding disk 502 is chamfered. The mating surface between the T-shaped push block 511 and the sliding disk 502 is inclined. A second spring 512 is provided in the second guide groove 510 near the end of the sliding disk 502. The other end of the T-shaped push block 511 extends out of the rotating disk 111. The worktable 101 is provided with an annular clearance groove 508 for avoiding the T-shaped push block 511. A wedge 509 is installed in the annular clearance groove 508 near the labeling opening 109.

[0044] In this embodiment of the invention, when the T-shaped push block 511 moves to the labeling station, the wedge block 509 overcomes the elastic force of the second spring 512 and pushes the T-shaped push block 511 toward the sliding disk 502. The sliding disk 502 overcomes the elastic force of the first spring 503 through the inclined plane and is pushed upward. When the sliding disk 502 moves upward, it overcomes the elastic force of the tension spring 506 and pulls the pull rope 505. The pull rope 505 pulls the clamping block 113, thereby causing the clamping block 113 to move upward. The clamping block 113... The propylene bottle is clamped; when the rotating disk 111 drives the T-shaped push block 511 away from the labeling station, the T-shaped push block 511 does not contact the wedge block 509. The second spring 512 pushes the T-shaped push block 511 to move in the opposite direction and reset. The first spring 503 pushes the sliding disk 502 to move downward and reset. At this time, the sliding disk 502 does not exert a pulling force on the pull rope 505, thereby causing the tension spring 506 to pull the clamping block 113 into the mounting groove 112, so that the upper end of the clamping block 113 is flush with the rotating disk 111.

[0045] like Figures 4-6As shown, in a preferred embodiment of the present invention, the drive assembly 6 includes a swing plate 601, a drive disk 603, a motor 605, a first transmission shaft 607, a first one-way transmission assembly 7, and a second one-way transmission assembly 8. A rotating shaft 606 is fixed on the swing plate 601 and rotatably connected to the bottom mounting bracket 110. An elongated hole 602 is provided on the swing plate 601. The drive disk 603 is rotatably connected to the bottom mounting bracket 110. The motor 605 is fixed to the other end of the bottom mounting bracket 110, and the rotating end of the motor 605 is connected to the drive disk 603. A push shaft 604 is fixed on the drive disk 603 and slidably connected to the elongated hole 602. The lower end of the drive shaft 603 is connected to the first transmission shaft 607 via the first one-way transmission assembly 7. The first one-way transmission assembly 7 is connected to the first drive shaft 607 via the first one-way transmission assembly 8. The reciprocating rotation of the first transmission shaft 607 intermittently drives the drive shaft 103 to rotate 120°. A gear 608 is fixed on the first transmission shaft 607. One end of the swing plate 601 is provided with teeth that mesh with the gear 608, and the other end of the swing plate 601 is set as a semi-circle. A second transmission shaft 609 is rotatably connected to the switching station disk 102. The upper end of the second transmission shaft 609 extends into the second clearance groove 507 and slides with the sliding disk 502. A third transmission shaft 610 is connected to the second transmission shaft 609 through a second one-way transmission assembly 8. A rubber transmission wheel 611 is fixed on the third transmission shaft 610. The rubber transmission wheel 611 is in frictional contact with the semi-circular end of the swing plate 601. The second one-way transmission assembly 8 drives the second transmission shaft 609 to rotate in one direction by the reciprocating rotation of the third transmission shaft 610.

[0046] In this embodiment of the invention, the motor 605 drives the drive disk 603 to rotate, the drive disk 603 drives the push shaft 604 to revolve, the push shaft 604, in conjunction with the elongated hole 602, drives the swing plate 601 to swing back and forth. When the swing plate 601 swings, it drives the gear 608 to rotate back and forth. The gear 608 drives the first transmission shaft 607 to rotate back and forth. The first one-way transmission component 7 intermittently drives the drive shaft 103 to rotate 120° through the reciprocating rotation of the first transmission shaft 607. At the same time, the other end of the swing plate 601 drives the rubber transmission wheel 611 to rotate back and forth. The rubber transmission wheel 611 drives the third transmission shaft 610 to rotate back and forth. The second one-way transmission component 8 drives the second transmission shaft 609 to rotate in one direction through the reciprocating rotation of the third transmission shaft 610. The second transmission shaft 609 drives the sliding disk 502 to rotate, and the sliding disk 502 drives the rotating disk 111 to rotate.

[0047] like Figure 5As shown, in a preferred embodiment of the present invention, the first one-way transmission assembly 7 includes a first ratchet 702, a first slider 704, and a third spring 705. A first mounting cavity 701 is provided on the drive shaft 103. The first ratchet 702 is disposed in the first mounting cavity 701 and is fixed on the first transmission shaft 607. A first sliding groove 703 is provided on the drive shaft 103. The first slider 704 is slidably connected to the first sliding groove 703. One end of the first slider 704 is engaged with the first ratchet 702. A third spring 705 is also disposed in the first sliding groove 703.

[0048] In this embodiment of the invention, the third spring 705 pushes the first slider 704 to engage with the first ratchet 702. When the first drive shaft 607 drives the first ratchet 702 to reciprocate, the first ratchet 702 drives the drive shaft 103 to rotate in the same direction through the first slider 704.

[0049] like Figure 6 As shown, in a preferred embodiment of the present invention, the second one-way transmission assembly 8 includes a second ratchet 802, a second slider 804, and a third spring 805. A second mounting cavity 801 is provided on the second transmission shaft 609. The second ratchet 802 is disposed in the second mounting cavity 801 and is fixed on the third transmission shaft 610. A second sliding groove 803 is provided on the second transmission shaft 609. The second slider 804 is slidably connected to the second sliding groove 803. One end of the second slider 804 is engaged with the second ratchet 802. A third spring 805 is also disposed in the second sliding groove 803.

[0050] In this embodiment of the invention, the third spring 805 pushes the second slider 804, thereby causing the second slider 804 to mesh with the second ratchet 802. When the third drive shaft 610 drives the second ratchet 802 to reciprocate, the second ratchet 802 drives the second drive shaft 609 to rotate in the same direction through the second slider 804.

[0051] The above embodiments of the present invention provide an automatic labeling machine. In use, a polypropylene bottle is placed on a first belt conveyor 202. Guided by a first guide baffle 201, the first belt conveyor 202 transports the polypropylene bottle to a rotating disk 111. Simultaneously, the polypropylene bottle is on a work station slot 105. A motor 605 drives a drive disk 603 to rotate, which in turn drives a push shaft 604 to revolve. The push shaft 604, in conjunction with an elongated hole 602, drives a swing plate 601 to oscillate reciprocally. When the swing plate 601 oscillates, it drives a gear 608 to oscillate reciprocally. The gear 608 drives a first transmission shaft 607 to oscillate reciprocally. A first one-way transmission assembly 7 intermittently drives the drive shaft 103 to rotate 120 degrees via the reciprocating rotation of the first transmission shaft 607. The drive shaft 103 drives the switching station disk 102 and station block 104 to rotate 120°, thereby driving the polypropylene bottle to rotate 120°, thus completing one station switch. When the rotating disk 111 drives the T-shaped push block 511 to the labeling station, the wedge block 509 overcomes the elastic force of the second spring 512 and pushes the T-shaped push block 511 to move towards the sliding disk 502. The sliding disk 502 overcomes the elastic force of the first spring 503 through the inclined plane and pushes the sliding disk 502 upward. When the sliding disk 502 moves upward, it overcomes the elastic force of the tension spring 506 and pulls the pull rope 505. The pull rope 505 pulls the clamping block 113, thereby causing the clamping block 113 to move upward. The clamping block 113 clamps the polypropylene bottle. At the same time, the other end of the swing plate 601 drives the rubber transmission wheel 6. 11 reciprocates, the rubber drive wheel 611 drives the third drive shaft 610 to reciprocate, the second one-way drive assembly 8 drives the second drive shaft 609 to rotate in one direction through the reciprocating rotation of the third drive shaft 610, the second drive shaft 609 drives the sliding disk 502 to rotate, the sliding disk 502 drives the rotating disk 111 to rotate, driving the servo motor to rotate one label length, the servo motor drives the pulling shaft 404 to rotate, the pulling shaft 404 cooperates with the rubber shaft 405 to pull the bottom paper of the material strip, and then pulls the material strip. When the label on the material strip passes the acute angle on the separating block 403, it is separated from the bottom paper, the rubber pressure roller 407 presses the label onto the polypropylene bottle, and when the polypropylene bottle rotates, the label is completely pasted on the polypropylene bottle, and then the workstation plate 1 is switched. 02 and station block 104 perform another 120° station switch. When the rotating disk 111 drives the T-shaped push block 511 away from the labeling station, the T-shaped push block 511 does not contact the wedge block 509. The second spring 512 pushes the T-shaped push block 511 to move in the opposite direction and reset. The first spring 503 pushes the sliding disk 502 to move downward and reset. At this time, the sliding disk 502 does not exert tension on the pull rope 505, thereby causing the tension spring 506 to pull the clamping block 113 into the mounting groove 112, making the upper end of the clamping block 113 flush with the rotating disk 111. At the same time as the station switch, the push rod 303 moves relative to the polypropylene bottle, thereby pushing the polypropylene bottle out of the station groove 105. The polypropylene bottle moves along the push rod 303 to the second belt conveyor 301.The second belt conveyor 301 feeds polypropylene bottles, thus completing the feeding, labeling, and unloading operations, thereby improving the efficiency of polypropylene bottle labeling.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic labeling machine, comprising a worktable, wherein a switching station panel is rotatably connected to the worktable, characterized in that, Also includes: Feeding assembly, unloading assembly, label feeding assembly, transmission assembly, and drive assembly; A protective cover is fixed on the workbench, and the switching station panel is set inside the protective cover. The protective cover is provided with a feed inlet, a discharge outlet and a labeling port. A drive shaft is installed on the switching station plate, a station block is installed on the drive shaft, and three station slots are provided on the station block. A rotating disk is rotatably connected to the switching station plate at the station slot, and an installation slot is provided on the rotating disk. A clamping block is rotatably connected to the installation slot. The bottom of the workbench is equipped with a bottom mounting frame, and the drive assembly is set on the bottom mounting frame. The drive assembly is used to drive the drive shaft to rotate intermittently by 120°. The drive assembly is used to drive the rotating disk located at the label supply assembly to rotate. The transmission assembly is set on the rotating disk. When the rotating disk is located at the label supply assembly, the transmission assembly drives the clamping block to rotate and fix the polypropylene bottle. The feeding assembly, unloading assembly, and label feeding assembly are all set on the workbench. The feeding assembly is used to supply polypropylene bottles to the rotating plate, the label feeding assembly is used to affix labels to the rotating polypropylene bottles, and the unloading assembly is used to remove the labeled polypropylene bottles from the work station slot. The transmission assembly includes a sliding disc, a pull rope, a tension spring, and a T-shaped push block. The rotating disc has a first guide groove, on which the sliding disc is slidably connected. The switching station disc has a second clearance groove to allow the sliding disc to move up and down. A first spring is also installed within the first guide groove. The rotating disc has a wire groove, and the pull rope is installed within this groove, with both ends connected to the lower ends of the clamping block and the sliding disc, respectively. Both ends of the tension spring are connected to the clamping block and the bottom of the mounting groove, respectively. The switching station disc... A second guide groove is provided, and the T-shaped push block is slidably connected in the second guide groove. One end of the T-shaped push block extends into the second clearance groove and slides with the sliding disk. The bottom of the sliding disk is provided with a chamfer. The mating surface between the T-shaped push block and the sliding disk is an inclined surface. A second spring is provided in the second guide groove near the end of the sliding disk. The other end of the T-shaped push block extends out of the rotating disk. An annular clearance groove for avoiding the T-shaped push block is provided on the worktable. A wedge is installed in the annular clearance groove near the labeling opening. The drive assembly includes a swing plate, a drive disk, a motor, a first transmission shaft, a first one-way transmission assembly, and a second one-way transmission assembly. A rotating shaft is fixed to the swing plate and rotatably connected to a bottom mounting bracket. An elongated hole is provided on the swing plate. The drive disk is rotatably connected to the bottom mounting bracket. The motor is fixed to the other end of the bottom mounting bracket, and its rotating end is connected to the drive disk. A push shaft is fixed to the drive disk and slidably connected to the elongated hole. The lower end of the drive shaft is connected to the first transmission shaft via the first one-way transmission assembly. The first one-way transmission assembly intermittently rotates through the reciprocating motion of the first transmission shaft. The drive shaft rotates 120°. A gear is fixed on the first drive shaft. One end of the swing plate is provided with teeth that mesh with the gear, and the other end of the swing plate is set as a semi-circle. A second drive shaft is rotatably connected to the switching station plate. The upper end of the second drive shaft extends into the second clearance groove and slides with the sliding plate. A third drive shaft is connected to the second drive shaft through a second one-way transmission assembly. A rubber transmission wheel is fixed on the third drive shaft. The rubber transmission wheel makes frictional contact with one semi-circular end of the swing plate. The second one-way transmission assembly drives the second drive shaft to rotate in one direction by reciprocating the third drive shaft.

2. The automatic labeling machine according to claim 1, characterized in that, The feeding assembly includes a first guide baffle and a first belt conveyor. Two first guide baffles are installed in parallel at the feed inlet on the worktable, and the first belt conveyor is disposed between the two first guide baffles.

3. The automatic labeling machine according to claim 1, characterized in that, The label feeding assembly includes a material rack, a material distribution block, a material pulling shaft, a rubber shaft, a guide shaft, and a rubber pressure roller. The material rack, material pulling shaft, rubber shaft, and guide shaft are all rotatably connected to the worktable. A servo motor is installed at the bottom of the worktable, and the rotating end of the servo motor is connected to the material pulling shaft. There is pressure between the material pulling shaft and the rubber shaft. A material tray is provided on the material rack. One end of the material distribution block is set with an acute angle. A rubber pressure roller is rotatably connected to the material distribution block. The material strip of the material tray first passes around the guide shaft, then passes through the gap between the rubber pressure roller and the material distribution block, and then passes through the gap between the material pulling shaft and the rubber shaft.

4. The automatic labeling machine according to claim 1, characterized in that, The unloading assembly includes a second belt conveyor and a push rod. The second belt conveyor is set on the workbench and located at the discharge port. A first clearance groove is provided in the middle of the work station block. The push rod is fixed on the discharge port and extends into the first clearance groove.

5. The automatic labeling machine according to claim 1, characterized in that, The first one-way transmission assembly includes a first ratchet, a first slider, and a third spring. The drive shaft is provided with a first mounting cavity. The first ratchet is disposed in the first mounting cavity and fixed on the first drive shaft. The drive shaft is provided with a first sliding groove. The first slider is slidably connected to the first sliding groove. One end of the first slider is engaged with the first ratchet. The third spring is also disposed in the first sliding groove.

6. The automatic labeling machine according to claim 1, characterized in that, The second one-way transmission assembly includes a second ratchet, a second slider, and a third spring. A second mounting cavity is provided on the second transmission shaft. The second ratchet is disposed in the second mounting cavity and fixed on the third transmission shaft. A second slide groove is provided on the second transmission shaft. The second slider is slidably connected to the second slide groove. One end of the second slider is engaged with the second ratchet. A third spring is also provided in the second slide groove.

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