A labeling device with automatic limit feeding function for label paper

Abstract

The present invention relates to the technical field of labeling machines, and more particularly to a labeling device with an automatic position-limiting loading function for label paper. The device comprises an automatic loading device installed on the labeling device, the automatic loading device comprising a switching placement device installed beside the labeling device, a plurality of switching and movable label shafts installed on the switching placement device, the label shafts being used to position and place rolled labels, a roll core unloading device being installed beside the switching placement device, a conveying box being installed beside the label shafts, the conveying box being used to continuously convey rolled labels to the label shafts, a label head fixing device being provided inside the conveying box, the label head fixing device being used to keep the label head in an unfolded state, a stretching and traction device being installed beside the switching placement device, a clamp being provided at the movable end of the stretching and traction device, the stretching and traction device cooperating with the clamp to pull the rolled labels to unfold and move, and the automated operation method of the present invention effectively saves labor costs and significantly improves production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of labeling machines, and in particular to a labeling device with an automatic position-limiting and loading function for label paper. Background Art

[0002] Labeling machine is an automated equipment widely used in food, beverage, medicine, daily chemical, electronics and other industries. It is mainly used to accurately and efficiently stick labels to designated locations on products or packaging containers.

[0003] Chinese patent CN114852453B discloses a roller labeling device, which relates to the technical field of labeling machines. It includes a control component for placing label paper, the control component including a machine platform and a control box disposed on the machine platform, a motor disposed inside the control box, a label shaft disposed on one side of the control box, and a roller driven by the motor disposed on the machine platform; a label conveying mechanism for conveying label paper, the label conveying mechanism including a lifting cylinder for clamping the label paper and a rodless cylinder for conveying the lifting cylinder for X-axial movement. By providing a control component, a label conveying mechanism, a label pressing mechanism, a loading and unloading mechanism, a material setting mechanism, and a label cutting mechanism, the device can automatically complete the automatic loading and unloading and labeling operations of tubular products. It is small in size, occupies little space, has low manufacturing costs, a streamlined structure, is convenient for later maintenance and overhaul, meets economic benefits, and has broad application prospects.

[0004] Before labeling begins, the device must place the rolled label onto the label shaft and pull one end of the label between the pressure plate and the support plate. The label is then clamped by the pressure plate and the support plate before it can be moved to begin labeling. This loading method requires frequent manual replacement of rolled labels after they are used up. Frequent manual label replacement not only increases the overall cost of labeling, but also causes the labeling machine to stop and wait if manual replacement is not timely, resulting in low production efficiency and failure to meet the requirements of modern large-scale production for efficient and continuous operation. Summary of the Invention

[0005] In order to solve the above problems, a labeling device with an automatic limit feeding function for label paper is provided. The automatic feeding device can effectively save labor costs and improve production efficiency.

[0006] In order to solve the problems of the prior art, the present invention provides a labeling device with an automatic limiting loading function for label paper, including an automatic loading device installed on the labeling device, the automatic loading device including a switching placement device installed next to the labeling device, a plurality of switching and movable label shafts are installed on the switching placement device, the label shafts are used to limit the placement of rolled labels, a roll core unloading device is installed next to the switching placement device, a conveying box is also installed next to the label shaft, the conveying box is used to continuously convey rolled labels to the label shaft, a label head fixing device is provided inside the conveying box, the label head fixing device is used to keep the label head in an unfolded state, a stretching and traction device is also installed next to the switching placement device, the movable end of the stretching and traction device is provided with a clamp, and the stretching and traction device cooperates with the clamp to pull the rolled label to unfold and move.

[0007] Preferably, a limit mounting rail is provided on the side of the conveying box, and a limit socket is also provided on the side of the limit mounting rail. A guide push shaft is slidably installed inside the limit mounting rail, and the guide push shaft cooperates with the limit socket for positioning. A stroke sensor is installed at the discharge end of the conveying box, and a first conveyor is installed at the bottom of the conveying box. The first conveyor is provided with multiple vertical push plates distributed at equal intervals.

[0008] Preferably, a plurality of anti-rotation strips are distributed on the outside of the guide push shaft, and the anti-rotation strips extend along the axial direction of the guide push shaft. A sliding slot is provided at one end of the guide push shaft, and the sliding slot is slidably connected to the limit mounting rail. A limit pin is slidably installed next to the sliding slot, and the limit pin is engaged with the limit socket. A first spring is installed between the limit pin and the guide push shaft, and a limit pushing mechanism is installed at the end of the guide push shaft away from the sliding slot. The limit pushing mechanism is used to push the rolled label toward the label shaft.

[0009] Preferably, the limiting pushing mechanism includes a first linear drive installed inside the guide pushing shaft, the telescopic end of the first linear drive is installed with a sliding mounting block, a plurality of retracting blocks are slidably installed on the sliding mounting block, a second spring is installed between the retracting block and the sliding mounting block, and a guiding bevel is provided on one side of the retracting block.

[0010] Preferably, the label head fixing device includes a second conveyor installed on the side of the conveyor box, a posting conveyor belt is installed on the second conveyor, and a surface of the posting conveyor belt is provided with a plurality of posting teeth.

[0011] Preferably, the label head fixing device further comprises a mounting shell mounted on the second conveyor, a detachable adhesive roller is mounted inside the mounting shell, and the adhesive roller is in contact with the posting teeth.

[0012] Preferably, the switching placement device includes a fixed bracket, a rotating switching frame rotatably mounted on the fixed bracket, the rotating switching frame is used to install multiple label shafts, and a rotating driver for driving the rotating switching frame to rotate is also installed on the fixed bracket. A core unloading device is installed on the side of the fixed bracket, and the core unloading device includes a second linear driver installed on the fixed bracket, and a flexible sponge block is installed at the telescopic end of the second linear driver, and a non-slip contact surface is provided on one side of the flexible sponge block.

[0013] Preferably, the stretching and traction device includes a telescopic movable device installed next to the switching placement device, the movable end of the telescopic movable device is installed with a horizontal movable device, the movable end of the horizontal movable device is fixedly connected to the clamper, the clamper includes a clamping cylinder installed on the horizontal movable device, the clamping end of the clamping cylinder is installed with a clamping roller and a clamping plate, the outer side of the clamping roller is provided with a plurality of equally distributed annular grooves, and the clamping plate is provided with an arc-shaped clamping surface.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention constructs a complete automatic label paper feeding system by arranging components such as a conveying box, a switching and placing device, and a stretching and traction device. The conveying box can stably convey multiple roll labels in the direction of the label axis. The switching and placing device can accurately adjust the positions of multiple label axes to ensure that the roll labels are accurately placed on the appropriate label axis. The stretching and traction device cooperates with the clamper to automatically clamp the label head and drive the roll label to stretch and unfold, so that the label head smoothly passes through the pressure plate and the support plate and is clamped and positioned. When the roll label is used up, the switching and placing device can automatically switch the label axis and cooperate with the conveying box and the stretching and traction device to re-perform automatic feeding operation. The entire process does not require frequent manual intervention, thereby realizing automatic and continuous label loading, effectively avoiding the problem of labeling machine downtime and waiting due to untimely manual replacement, significantly improving production efficiency, and meeting the requirements of modern large-scale production for efficient and continuous operation.

[0016] 2. In traditional labeling operations, rolled labels need to be frequently replaced manually after use, which not only increases manpower input, but also affects the stability of the operation due to the uncertainty of manual operation. The roll core unloading device of the present invention can automatically detach the roll core from the label shaft with the roll core left on it after the label shaft is switched, so that the label shaft is restored to the state to be used, and there is no need to manually clean the roll core. At the same time, the various components of the automatic feeding system work together to accurately control the label transportation, placement, unfolding and clamping positioning, etc., reducing the errors and mistakes that may be caused by manual operation, and improving the accuracy and stability of the operation. In addition, the automated operation method reduces manual participation and reduces labor costs, saving production costs for the enterprise and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a three-dimensional schematic diagram of a labeling device with automatic label paper limiting feeding function of the present invention Figure 1 .

[0018] Figure 2 This is a three-dimensional schematic diagram of a labeling device with automatic label paper limiting feeding function of the present invention Figure 2 .

[0019] Figure 3 It is a three-dimensional schematic diagram of a conveying box in a labeling device with an automatic position-limiting and loading function for label paper according to the present invention.

[0020] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0021] Figure 5 The present invention is a schematic diagram of the disassembly and assembly of the conveyor box structure of a labeling device with an automatic position-limiting and loading function for label paper.

[0022] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle.

[0023] Figure 7 It is a three-dimensional schematic diagram of a label head fixing device in a labeling device with an automatic position-limiting and loading function for label paper according to the present invention.

[0024] Figure 8 The present invention is a schematic diagram of the disassembly and assembly of a partial structure of a label head fixing device in a labeling device with an automatic position-limiting and loading function for label paper.

[0025] Figure 9 It is a three-dimensional schematic diagram of a switching placement device in a labeling device with an automatic position-limiting loading function for label paper according to the present invention.

[0026] Figure 10 It is a three-dimensional schematic diagram of a stretching and traction device in a labeling device with an automatic position-limiting and loading function for label paper according to the present invention.

[0027] Figure 11 It is a three-dimensional schematic diagram of a clamp in a labeling device with an automatic position-limiting and loading function for label paper according to the present invention.

[0028] The numbers in the figure are:

[0029] 1. Conveyor box; 11. Travel sensor; 12. Position limiting mounting rail; 13. Position limiting socket; 14. Guide push shaft; 141. Anti-rotation strip; 142. Sliding slot; 143. Position limiting latch; 144. First spring; 1451. Sliding mounting block; 1452. Second spring; 1453. Retraction block; 1454. Guide bevel; 15. First conveyor; 151. Vertical push plate; 16. Label head fixing device; 161. Second conveyor; 162. Posting conveyor belt; 1621. Posting teeth; 163. Mounting shell ;164. Sticky roller; 2. Switching placement device; 21. Label axis; 22. Fixed bracket; 23. Rotating switching frame; 24. Rotating drive; 25. Core unloading device; 251. Flexible sponge block; 252. Anti-slip contact surface; 253. Second linear drive; 3. Stretching and traction device; 31. Telescopic moving device; 32. Horizontal moving device; 33. Clamp; 331. Clamping cylinder; 332. Clamping roller; 3321. Annular groove; 333. Clamping plate; 3331. Arc-shaped clamping surface; 4. Roll label. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] See also Figures 1 to 11 As shown, a labeling device with an automatic limit feeding function for label paper includes an automatic feeding device installed on the labeling device, the automatic feeding device includes a switching placement device 2 installed next to the labeling device, a plurality of switching and movable label shafts 21 are installed on the switching placement device 2, the label shaft 21 is used to limit the placement of the rolled label 4, a roll core unloading device 25 is installed next to the switching placement device 2, a conveying box 1 is also installed next to the label shaft 21, the conveying box 1 is used to continuously convey the rolled label 4 to the label shaft 21, a label head fixing device 16 is provided inside the conveying box 1, the label head fixing device 16 is used to keep the label head in an unfolded state, a stretching and traction device 3 is also installed next to the switching placement device 2, the movable end of the stretching and traction device 3 is provided with a clamper 33, the stretching and traction device 3 cooperates with the clamper 33 to pull the rolled label 4 to unfold and move.

[0032] A plurality of roll labels 4 are sequentially placed in the conveyor box 1. At the same time, the head of each roll label 4 is torn off and attached to the label head fixing device 16 in the conveyor box 1. The label head fixing device 16 keeps the label head in an unfolded state.

[0033] The conveyor box 1 starts to steadily convey multiple roll labels 4 toward the label shaft 21. When the roll labels 4 approach the label shaft 21, the switching placement device 2 adjusts the positions of the multiple label shafts 21 to ensure that one of the label shafts 21 is in a suitable position to receive the roll labels 4.

[0034] When the rolled label 4 approaches the label shaft 21 to a set distance, the stretching and traction device 3 activates, and the clamp 33 at its movable end clamps the label head. The conveyor box 1 then continues advancing, accurately pushing the rolled label 4 held by the clamp 33 onto the label shaft 21, achieving initial positioning of the rolled label 4 on the label shaft 21. At this point, the stretching and traction device 3 drives the clamp 33 to move synchronously with the rolled label 4, freeing the label head from the label head fixture 16 and allowing it to remain stably attached to the clamp 33.

[0035] The stretching and pulling device 3 continues to move the gripper 33 toward the pressure plate and support plate of the labeling device. During this movement, the gripper 33 pulls on the rolled label 4, stretching and unrolling it. When the label head and gripper 33 pass between the pressure plate and support plate, the pressure plate and support plate of the labeling device close, clamping the label head in place and ensuring stability and accuracy during the labeling process. The gripper 33 then releases its grip, and the stretching and pulling device 3 returns the gripper 33, free of the label head, to its original position, ready for the next pulling operation.

[0036] After the pressure plate and the support plate clamp the label head and position it, the labeling device starts and the label is attached to the product surface through the labeling head to achieve continuous labeling operation.

[0037] When the roll of labels 4 is exhausted, the switching placement device 2 automatically switches the label shaft 21, moving the unloaded label shaft 21 to the side of the conveyor box 1. The conveyor box 1 and the stretching and pulling device 3 then resume automatic loading. Simultaneously, the core-removing device 25 removes the core of the label shaft 21 that has been removed and still retains the roll, returning the shaft 21 to its ready-to-use state and preparing it for the next label installation. This invention effectively improves work efficiency and reduces labor costs.

[0038] See also Figures 1 to 5 As shown, a limit mounting rail 12 is provided on the side of the conveying box 1, and a limit socket 13 is also provided on the side of the limit mounting rail 12. A guide push shaft 14 is slidably installed inside the limit mounting rail 12, and the guide push shaft 14 cooperates with the limit socket 13 for positioning. A stroke sensor 11 is installed at the discharge end of the conveying box 1, and a first conveyor 15 is installed at the bottom of the conveying box 1. The first conveyor 15 is provided with a plurality of vertical push plates 151 distributed at equal intervals.

[0039] When the roll labels 4 need to be stored, the operator opens the conveyor box 1 and removes the guide push shaft 14 from the position-limiting mounting rail 12. Subsequently, multiple roll labels 4 are sequentially mounted on the guide push shaft 14. The guide push shaft 14 is then reinstalled back into the position-limiting mounting rail 12 and positioned using the position-limiting socket 13 to ensure that the guide push shaft 14 is fixed in place within the conveyor box 1. At this point, the multiple roll labels 4 remain stably within the conveyor box 1.

[0040] A first conveyor 15 is mounted at the bottom of the conveyor box 1. Multiple vertical push plates 151 are evenly spaced on the conveyor 15. Once the guide push shaft 14 is in place and the roll labels 4 are placed, the vertical push plates 151 separate the roll labels 4 into individual pieces, preventing them from being squeezed during transport and ensuring stable transportation. Simultaneously, a worker tears off the head of each roll label 4 and attaches it to the label head fixture 16 inside the conveyor box 1, keeping the label head in an unfolded state, ready for subsequent traction and transport.

[0041] When the rolled label 4 needs to be conveyed toward the label shaft 21, the first conveyor 15 activates, driving the multiple vertical push plates 151. As they move, the vertical push plates 151 push the rolled label 4 along the guide push shaft 14 toward the discharge end of the conveyor box 1. A travel sensor 11 is installed at the discharge end of the conveyor box 1. When the rolled label 4 reaches the position of the travel sensor 11, the travel sensor 11 detects the rolled label 4 and generates a signal, triggering the activation of the stretching and pulling device 3.

[0042] After the stretching and pulling device 3 is activated, the gripper 33 at its active end clamps the label head of the rolled label 4 at the position of the travel sensor 11. Subsequently, the working end of the guide push shaft 14 propels the rolled label 4 forward until the rolled label 4, held by the gripper 33, is accurately pushed onto the label shaft 21, achieving initial positioning of the rolled label 4 on the label shaft 21. At this point, the stretching and pulling device 3 drives the gripper 33 to move synchronously with the rolled label 4, gradually freeing the label head from the label head fixture 16 and allowing it to stabilize on the gripper 33, completing the automatic loading operation of the conveyor box 1.

[0043] The conveyor box 1 realizes stable storage, orderly separation, precise conveyance of the rolled labels 4 and coordinated cooperation with the stretching and traction device 3, providing reliable guarantee for the continuous and efficient operation of the labeling device.

[0044] See also Figures 3 to 6As shown, a plurality of anti-rotation strips 141 are distributed on the outside of the guide push shaft 14, and the anti-rotation strips 141 extend along the axial direction of the guide push shaft 14. A sliding slot 142 is provided at one end of the guide push shaft 14, and the sliding slot 142 is slidably connected to the limit mounting rail 12. A limit pin 143 is slidably installed next to the sliding slot 142, and the limit pin 143 is engaged with the limit socket 13. A first spring 144 is installed between the limit pin 143 and the guide push shaft 14, and a limit pushing mechanism is installed at the end of the guide push shaft 14 away from the sliding slot 142. The limit pushing mechanism is used to push the rolled label 4 toward the label shaft 21.

[0045] A sliding slot 142 is provided at one end of the guide push shaft 14, which is slidably connected to the limit mounting rail 12 on the side of the conveyor box 1. This design allows for easy removal and installation of the guide push shaft 14 from the limit mounting rail 12, facilitating the assembly of roll labels 4. After the guide push shaft 14 is installed on the limit mounting rail 12, a limit latch 143 slidably mounted next to the sliding slot 142 is stably inserted into the limit socket 13 on the side of the limit mounting rail 12 under the action of a first spring 144. The elastic force provided by the first spring 144 ensures that the limit latch 143 remains stably inserted, thereby accurately positioning the guide push shaft 14 within the conveyor box 1 and preventing it from shifting during operation.

[0046] Multiple anti-rotation strips 141 are evenly distributed along the outer side of the guide and push shaft 14. When multiple rolls of labels 4 are sequentially mounted on the guide and push shaft 14, the anti-rotation strips 141 come into close contact with the inner rings of the rolls, effectively limiting rotation of the rolls 4 during transport. This design prevents the label head from rewinding due to rotation of the rolls, ensuring a stable, unrolled state during subsequent traction and transport.

[0047] After the guide push shaft 14 is installed and the roll labels 4 are assembled, the first conveyor 15 at the bottom of the conveyor box 1 is activated, driving the movement of multiple equally spaced vertical push plates 151. As they move, the vertical push plates 151 propel the roll labels 4 along the guide push shaft 14 toward the discharge end of the conveyor box 1. The guide push shaft 14 provides a stable guide path for the roll labels 4, ensuring their orderly movement in the intended direction. Furthermore, the vertical push plates 151 separate the multiple roll labels 4 into individual pieces, preventing them from being squeezed during transport and further ensuring stable and reliable transport.

[0048] When the first conveyor 15 drives the rolled label 4 to the position of the travel sensor 11 at the discharge end of the conveyor box 1, the travel sensor 11 detects the rolled label 4 and sends a signal, triggering the activation of the stretching and traction device 3. The clamp 33 at the movable end of the stretching and traction device 3 clamps the label head of the rolled label 4 at the position of the travel sensor 11. At this time, the limit push mechanism installed at the end of the guide push shaft 14 away from the sliding slot 142 is activated. The working end of the limit push mechanism extends forward, pushing the rolled label 4 forward. Under the push of the limit push mechanism, the rolled label 4 clamped by the clamp 33 is accurately pushed onto the label shaft 21, achieving the initial limit placement of the rolled label 4 on the label shaft 21. At the same time, the stretching and traction device 3 drives the clamp 33 to move synchronously with the rolled label 4, causing the label head to gradually disengage from the label head fixing device 16 in the conveyor box 1 and remain stably on the clamp 33. At this point, the guide push shaft 14 cooperates with other components of the conveyor box 1 to complete the automatic loading operation, providing reliable support for the continuous and efficient operation of the labeling device.

[0049] See also Figure 4 As shown, the limiting pushing mechanism includes a first linear drive installed inside the guide pushing shaft 14, the telescopic end of the first linear drive is installed with a sliding mounting block 1451, a plurality of retracting blocks 1453 are slidably installed on the sliding mounting block 1451, a second spring 1452 is installed between the retracting block 1453 and the sliding mounting block 1451, and a guiding bevel 1454 is provided on one side of the retracting block 1453.

[0050] The limited push mechanism is mounted on the end of the guide push shaft 14 away from the sliding slot 142. A first linear actuator is fixedly mounted within the guide push shaft 14, with its retractable end connected to a sliding mounting block 1451. Multiple retractable blocks 1453 are slidably mounted on the sliding mounting block 1451. A second spring 1452 is installed between each retractable block 1453 and the sliding mounting block 1451, enabling elastic expansion and contraction. A guiding bevel 1454 is provided on one side of the retractable block 1453.

[0051] When the first conveyor 15 drives the roll label 4 to the position of the travel sensor 11 at the discharge end of the conveyor box 1, the travel sensor 11 detects the presence of the roll label 4 and sends an electrical signal. The stretching and pulling device 3 is started, and the first linear drive in the limit pushing mechanism starts working at the same time.

[0052] After receiving the trigger signal, the first linear actuator's telescopic end drives the sliding mounting block 1451 to retract. Since the retracting block 1453 is mounted on the sliding mounting block 1451, the movement of the sliding mounting block 1451 causes the multiple retracting blocks 1453 to move synchronously toward the interior of the guide push shaft 14. During this movement, the guiding bevel 1454 on one side of the retracting block 1453 first contacts the inner edge of the roll label 4. As the retracting block 1453 continues to move, the guiding bevel 1454 is squeezed by the inner ring of the roll label 4, causing the retracting block 1453 to retract toward the interior of the sliding mounting block 1451. During this retraction process, the retracting block 1453 compresses the second spring 1452, causing it to elastically deform and store elastic potential energy. When the retracting block 1453 has completely passed through the inner ring of the roll label 4 and moved to the rear end of the roll label 4, the retracting block 1453 is no longer squeezed by the inner ring of the roll label 4.

[0053] After the resistance force is lost, the second spring 1452 releases its stored elastic potential energy, generating an elastic restoring force that pushes the retracting block 1453 away from the center of the sliding mounting block 1451, causing the retracting block 1453 to return to its original position and expand. At this point, the retracting block 1453 is located at the rear end of the roll label 4, ready for subsequent movement of the roll label 4.

[0054] The first linear actuator continues to operate, its telescopic end pushing the sliding mounting block 1451 toward the label shaft 21. Since the retracting block 1453 is already extended and positioned at the rear end of the rolled label 4, the movement of the sliding mounting block 1451 drives the retracting block 1453 to move synchronously, thereby pushing the rolled label 4 along the guide push shaft 14 toward the label shaft 21. With the continued push of the first linear actuator, the rolled label 4 is accurately pushed onto the label shaft 21, achieving initial positional placement on the label shaft 21. The positional push mechanism completes the pushing action during the automatic loading process.

[0055] See also Figures 5 to 8 As shown, the label head fixing device 16 includes a second conveyor 161 installed on the side of the conveying box 1, and a posting conveyor belt 162 is installed on the second conveyor 161. The surface of the posting conveyor belt 162 is provided with a plurality of posting teeth 1621.

[0056] Before the automatic loading process begins, the staff sequentially places multiple rolls of labels 4 into the conveyor box 1 and tears off the top of each roll of labels 4. The torn label heads are then attached to the posting conveyor belt 162. Because the posting conveyor belt 162 is provided with a plurality of posting teeth 1621, the label heads only come into contact with the posting teeth 1621, effectively reducing the attachment area. This design paves the way for the subsequent label heads to smoothly detach from the posting conveyor belt 162 and remain in an unfolded state.

[0057] When the conveyor box 1 is activated, the first conveyor 15 within it steadily conveys the rolled label 4 toward the label axis 21. Simultaneously, the second conveyor 161 is activated, driving the labeling conveyor belt 162 to move synchronously with the first conveyor 15. During the conveying process, the label header on the labeling conveyor belt 162, supported by the labeling teeth 1621, remains unfolded and moves with the labeling conveyor belt 162. This synchronized movement ensures a stable relative position between the label header and the rolled label 4, ensuring that the label header is always conveyed synchronously with the rolled label 4, avoiding problems such as wrinkling or tangling of the label header caused by asynchronous movement.

[0058] When the rolled label 4 approaches the label axis 21 to a set distance, the tensioning and pulling device 3 is activated, and the clamp 33 at its movable end clamps the label head. At this point, because the label head and the posting conveyor belt 162 only have a small area of ​​contact through the posting teeth 1621, the tension of the clamp 33 allows the label head to easily detach from the posting conveyor belt 162 and remain stable on the clamp 33.

[0059] See also Figures 7 and 8 As shown, the label head fixing device 16 further includes a mounting shell 163 mounted on the second conveyor 161 , a detachable adhesive roller 164 is mounted inside the mounting shell 163 , and the adhesive roller 164 is in contact with the posting tooth 1621 .

[0060] When the posting conveyor belt 162 is in use, the surface of the posting teeth 1621 may be contaminated with dust in the air. When the posting teeth 1621 come into contact with the adhesive roller 164, the adhesive roller 164 uses its own viscosity to absorb the dust, keeping the posting teeth 1621 clean and preventing dust from affecting the contact between the label head and the posting teeth 1621. The mounting housing 163 is designed with a detachable adhesive roller 164. When the adhesive roller 164 loses its viscosity due to long-term use or becomes covered with dust and needs to be cleaned, the staff can easily remove the adhesive roller 164 from the mounting housing 163 for replacement or cleaning, facilitating maintenance of the equipment and ensuring the long-term stable operation of the label head fixing device 16.

[0061] See also Figure 1 and Figure 9As shown, the switching placement device 2 includes a fixed bracket 22, a rotating switching frame 23 is rotatably mounted on the fixed bracket 22, the rotating switching frame 23 is used to install multiple label shafts 21, and a rotating driver 24 is also installed on the fixed bracket 22 to drive the rotating switching frame 23 to rotate. A core unloading device 25 is installed on the side of the fixed bracket 22, and the core unloading device 25 includes a second linear drive 253 installed on the fixed bracket 22. A flexible sponge block 251 is installed at the telescopic end of the second linear drive 253, and a non-slip contact surface 252 is provided on one side of the flexible sponge block 251.

[0062] During normal operation of the labeling system, multiple label shafts 21 are mounted on a rotating switching frame 23, which serves to position and position the rolls of labels 4. As the rolls of labels 4 on the currently active label shafts 21 gradually deplete, the rotary actuator 24 activates. The rotary actuator 24 drives the rotating switching frame 23 for rotational adjustment. The rotation of the rotating switching frame 23 precisely moves the label shafts 21 without rolls of labels 4 to the designated position at the output of the conveyor box 1. At this point, the label shafts 21 waiting to be used are ready to receive the rolls of labels 4.

[0063] As the rotating switching frame 23 rotates to switch the label shaft 21, the label shaft 21 originally mounted with the used roll of label 4 and the remaining core moves synchronously. When the label shaft 21 rotates to the position corresponding to the core unloading device 25, the flexible sponge block 251 comes into contact with the core, and the non-slip contact surface 252 on one side of the flexible sponge block 251 fits tightly against the core surface. Subsequently, the second linear actuator 253 is activated, and the telescopic end of the second linear actuator 253 moves in the set direction and stroke, driving the flexible sponge block 251 along with it. Because sufficient friction is generated between the flexible sponge block 251 and the core via the non-slip contact surface 252, this friction drives the core to move synchronously as the flexible sponge block 251 moves. As the flexible sponge block 251 continues to move, the core gradually detaches from the label shaft 21, eventually separating completely from the label shaft 21. At this point, the label shaft 21 returns to its ready-to-use state, ready for the next installation of a new roll of label 4.

[0064] See also Figure 1 、 Figure 10 and Figure 11As shown, the stretching and traction device 3 includes a telescopic movable device 31 installed next to the switching placement device 2, and the movable end of the telescopic movable device 31 is installed with a horizontal movable device 32, the horizontal movable device 32 is fixedly connected to the movable end of the telescopic movable device 31, and the movable end of the horizontal movable device 32 is fixedly connected to the clamper 33, and the clamper 33 includes a clamping cylinder 331 installed on the horizontal movable device 32, and the clamping end of the clamping cylinder 331 is installed with a clamping roller 332 and a clamping plate 333, and the outer side of the clamping roller 332 is provided with a plurality of equally distributed annular grooves 3321, and the clamping plate 333 is provided with an arc-shaped clamping surface 3331.

[0065] Before the automatic loading process begins, multiple rolls of labels 4 are sequentially placed into the conveyor box 1. Simultaneously, the head of each roll of label 4 is torn off and attached to the label head fixture 16 inside the conveyor box 1, with the label head remaining in the extended position. At this point, the stretching and pulling device 3 is in its initial position, the telescopic movement device 31 and the horizontal movement device 32 are both deactivated, and the clamping cylinder 331 of the clamp 33 is released.

[0066] When the conveyor box 1 starts and steadily conveys the rolled label 4 toward the label shaft 21, and the rolled label 4 approaches the label shaft 21 to a set distance, the telescopic movement device 31 and the horizontal movement device 32 cooperate to drive the clamping cylinder 331 toward the rolled label 4, and the clamping cylinder 331 starts. The clamping cylinder 331 drives the clamping roller 332 and the clamping plate 333 to move relative to each other, clamping the label head. During this process, the annular groove 3321 distributed on the outer side of the clamping roller 332 and the gap between the annular groove 3321 effectively reduce the contact area with the label head, facilitating subsequent stripping. At the same time, the curved clamping surface 3331 on the clamping plate 333 presses the label head against the surface of the clamping roller 332, ensuring that the label head is firmly clamped.

[0067] Subsequently, the telescopic movement device 31 and the horizontal movement device 32 work in conjunction with the propulsion of the conveyor box 1 to accurately move the clamped roll label 4 to the label shaft 21, achieving the initial limited placement of the roll label 4 on the label shaft 21. At this time, the label head is pulled away from the label head fixing device 16 by the clamp 33 and remains stably on the clamp 33.

[0068] After completing the initial positioning, the horizontal movement device 32 continues to move the clamp 33 toward the pressure plate and support plate of the labeling device. During this movement, the clamp 33 pulls on the rolled label 4, stretching and unrolling it, causing the label to gradually unroll. When the label head and clamp 33 pass between the pressure plate and support plate, the pressure plate and support plate of the labeling device close, clamping the label head in place.

[0069] After the pressure plate and support plate clamp the label head into position, the clamping cylinder 331 releases the clamping state, releasing the label head. At this time, the horizontal movement device 32 continues to move horizontally, allowing the clamping roller 332 to separate from the label head. Because the annular groove 3321 on the outside of the clamping roller 332 reduces the contact area, the label head can be smoothly separated from the clamping roller 332, avoiding the problem of difficult material removal. Afterwards, the telescopic movement device 31 and the horizontal movement device 32 cooperate with each other to drive the clamping cylinder 331 to return to its initial position, preparing for the next traction operation. The entire process is automated, improving work efficiency and reducing labor costs.

[0070] Specific working principle:

[0071] A plurality of roll labels 4 are sequentially placed in the conveyor box 1. At the same time, the head of each roll label 4 is torn off and attached to the label head fixing device 16 in the conveyor box 1. The label head fixing device 16 keeps the label head in an unfolded state.

[0072] The conveyor box 1 starts to steadily convey multiple roll labels 4 toward the label shaft 21. When the roll labels 4 approach the label shaft 21, the switching placement device 2 adjusts the positions of the multiple label shafts 21 to ensure that one of the label shafts 21 is in a suitable position to receive the roll labels 4.

[0073] When the rolled label 4 approaches the label shaft 21 to a set distance, the stretching and traction device 3 activates, and the clamp 33 at its movable end clamps the label head. The conveyor box 1 then continues advancing, accurately pushing the rolled label 4 held by the clamp 33 onto the label shaft 21, achieving initial positioning of the rolled label 4 on the label shaft 21. At this point, the stretching and traction device 3 drives the clamp 33 to move synchronously with the rolled label 4, freeing the label head from the label head fixture 16 and allowing it to remain stably attached to the clamp 33.

[0074] The stretching and pulling device 3 continues to move the gripper 33 toward the pressure plate and support plate of the labeling device. During this movement, the gripper 33 pulls on the rolled label 4, stretching and unrolling it. When the label head and gripper 33 pass between the pressure plate and support plate, the pressure plate and support plate of the labeling device close, clamping the label head in place and ensuring stability and accuracy during the labeling process. The gripper 33 then releases its grip, and the stretching and pulling device 3 returns the gripper 33, free of the label head, to its original position, ready for the next pulling operation.

[0075] After the pressure plate and the support plate clamp the label head and position it, the labeling device starts and the label is attached to the product surface through the labeling head to achieve continuous labeling operation.

[0076] When the roll of labels 4 is exhausted, the switching placement device 2 automatically switches the label shaft 21, moving the unloaded label shaft 21 to the side of the conveyor box 1. The conveyor box 1 and the stretching and pulling device 3 then resume automatic loading. Simultaneously, the core-removing device 25 removes the core of the label shaft 21 that has been removed and still retains the roll, returning the shaft 21 to its ready-to-use state and preparing it for the next label installation. This invention effectively improves work efficiency and reduces labor costs.

[0077] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. A labeling device with an automatic position-limiting feeding function for label paper, comprising an automatic feeding device installed on the labeling device, characterized in that: The automatic feeding device includes a switching placement device (2) installed next to the labeling device, a plurality of switching and moving label shafts (21) are installed on the switching placement device (2), the label shafts (21) are used to limit the placement of rolled labels (4), a roll core unloading device (25) is installed next to the switching placement device (2), a conveying box (1) is also installed next to the label shaft (21), the conveying box (1) is used to continuously convey the rolled labels (4) to the label shaft (21), a label head fixing device (16) is provided inside the conveying box (1), the label head fixing device (16) is used to keep the label head in an unfolded state, a stretching and traction device (3) is also installed next to the switching placement device (2), a clamp (33) is provided at the movable end of the stretching and traction device (3), and the stretching and traction device (3) cooperates with the clamp (33) to pull the rolled labels (4) to unfold and move; A limit mounting rail (12) is provided on the side of the conveying box (1), and a limit socket (13) is further provided on the side of the limit mounting rail (12). A guide push shaft (14) is slidably installed inside the limit mounting rail (12), and the guide push shaft (14) cooperates with the limit socket (13) for positioning. A stroke sensor (11) is installed at the discharge end of the conveying box (1), and a first conveyor (15) is installed at the bottom of the conveying box (1). The first conveyor (15) is provided with a plurality of vertical push plates (151) distributed at equal intervals. A plurality of anti-rotation strips (141) are distributed on the outer side of the guide push shaft (14), and the anti-rotation strips (141) extend along the axial direction of the guide push shaft (14). A sliding slot (142) is provided at one end of the guide push shaft (14), and the sliding slot (142) is slidably connected to the limit mounting rail (12). A limit latch (143) is slidably installed beside the sliding slot (142), and the limit latch (143) is engaged with the limit socket (13). A first spring (144) is installed between the limit latch (143) and the guide push shaft (14), and a limit push mechanism is installed at one end of the guide push shaft (14) away from the sliding slot (142), and the limit push mechanism is used to push the rolled label (4) to move toward the label shaft (21); The position-limiting pushing mechanism comprises a first linear driver installed inside the guide pushing shaft (14); a sliding mounting block (1451) is installed at the telescopic end of the first linear driver; a plurality of contraction blocks (1453) are slidably mounted on the sliding mounting block (1451); a second spring (1452) is installed between the contraction block (1453) and the sliding mounting block (1451); and a guide bevel (1454) is provided on one side of the contraction block (1453).

2. The labeling device with automatic position limiting and loading function of label paper according to claim 1 is characterized in that: The label head fixing device (16) comprises a second conveyor (161) installed on the side of the conveying box (1), a posting conveyor belt (162) is installed on the second conveyor (161), and a surface of the posting conveyor belt (162) is provided with a plurality of posting teeth (1621).

3. The labeling device with automatic position limiting and loading function of label paper according to claim 2, characterized in that: The label head fixing device (16) further comprises a mounting shell (163) mounted on the second conveyor (161), a detachable adhesive roller (164) being mounted inside the mounting shell (163), and the adhesive roller (164) is in contact with the posting tooth (1621).

4. The labeling device with automatic position limiting and loading function of label paper according to claim 1, characterized in that: The switching placement device (2) includes a fixed bracket (22), a rotating switching frame (23) rotatably mounted on the fixed bracket (22), the rotating switching frame (23) being used to mount a plurality of label shafts (21), a rotating driver (24) for driving the rotating switching frame (23) to rotate being further mounted on the fixed bracket (22), a core unloading device (25) being mounted on the side of the fixed bracket (22), the core unloading device (25) including a second linear driver (253) mounted on the fixed bracket (22), a flexible sponge block (251) being mounted on the telescopic end of the second linear driver (253), and a non-slip contact surface (252) being provided on one side of the flexible sponge block (251).

5. The labeling device with automatic position limiting and loading function of label paper according to claim 1, characterized in that: The stretching and traction device (3) includes a telescopic movable device (31) installed next to the switching placement device (2), the movable end of the telescopic movable device (31) is installed with a horizontal movable device (32), the movable end of the horizontal movable device (32) is fixedly connected to a clamp (33), the clamp (33) includes a clamping cylinder (331) installed on the horizontal movable device (32), the clamping end of the clamping cylinder (331) is installed with a clamping roller (332) and a clamping plate (333), the outer side of the clamping roller (332) is provided with a plurality of equally spaced annular grooves (3321), and the clamping plate (333) is provided with an arc-shaped clamping surface (3331).

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