Label positioning device

Abstract

The utility model discloses a label positioning device which is characterized by comprising two groups of positioning components which are oppositely arranged, and a positioning space is formed between the two groups of positioning components; the positioning assembly comprises an air cylinder and two positioning rollers, and the two positioning rollers are connected with an output shaft at the inner end of the air cylinder through a connecting mechanism. The connecting mechanism comprises a support and two sets of U-shaped frames, the U-shaped frames are arranged at the inner end of the support, openings of the U-shaped frames face inwards, and each positioning roller is rotationally installed in the corresponding U-shaped frame; the outer end of the support is connected with an output shaft at the inner end of the air cylinder, two transverse through grooves are formed in the support and are perpendicular to the U-shaped frames, and each U-shaped frame is connected with the two transverse through grooves through bolts. According to the utility model, the cost is reduced, and the application range is widened.

Description

Technical Field

[0001] The utility model relates to a label sleeve machine, in particular to a label sleeve positioning device. Background Art

[0002] As one of the equipments with high technical content in the post-packaging, the sleeve labeling machine has been fully recognized by customers for its excellent high-speed and stable performance, unique flexible design, and human-machine cooperative safety mode. Its application areas include food, beverage and pharmaceutical industries, condiments, juice, injection needles, milk, refined oil, etc.

[0003] Among them, when the labeling machine is working, the labeling mechanism sends out the label of the corresponding size downward, and a conveyor belt is set below the labeling mechanism. The product is conveyed by the conveyor belt so that the label sent out by the labeling mechanism is directly put on the corresponding product. For products of the same type and different sizes, in order to reduce costs, labeling mechanisms of different sizes will be replaced. In order to ensure the accuracy of positioning, conveyor belts of different widths need to be replaced so that the labeling mechanism will face the product on the conveyor belt. Since the conveyor belt occupies a large space, if conveyor belts of different widths are directly replaced, the cost is relatively high. Therefore, how to solve the above technical problems is the direction that technical personnel in this field need to work hard. Summary of the invention

[0004] The utility model aims to provide a sleeve label positioning device, which can improve the application scope and reduce the replacement cost by using the structure.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a sleeve label positioning device, comprising two sets of positioning components arranged opposite to each other, and a positioning space is formed between the two sets of positioning components;

[0006] The positioning assembly includes a cylinder and two positioning rollers, and the two positioning rollers are connected to the output shaft at the inner end of the cylinder via a connecting mechanism;

[0007] The connecting mechanism comprises a bracket and two sets of U-shaped frames, wherein the U-shaped frame is arranged at the inner end of the bracket, the opening of the U-shaped frame is arranged inward, and each positioning roller is rotatably installed in the U-shaped frame;

[0008] The outer end of the bracket is connected to the output shaft of the inner end of the cylinder. The bracket is provided with two transverse through slots, which are arranged perpendicular to the U-shaped frame. Each U-shaped frame is connected to the two transverse through slots via bolts.

[0009] In the above technical solution, the outer end surface of the U-shaped frame contacts the inner end surface of the bracket;

[0010] The outer end surface of the U-shaped frame is provided with two spaced screw holes, each of which is arranged opposite to one of the transverse through slots, and the inner end of each of the bolts passes through one of the transverse through slots and is screwed to one of the screw holes, and the bolts limit the U-shaped frame to the bracket.

[0011] In the above technical solution, the inner end outer surface of the positioning roller is arranged outside the inner end of the U-shaped frame, the left outer surface of the positioning roller is arranged outside the left side of the U-shaped frame, and the right outer surface of the positioning roller is arranged outside the right side of the U-shaped frame.

[0012] In the above technical solution, when the cylinder output shafts in the two groups of positioning assemblies extend or retract at the same time, the positioning rollers in the two groups of positioning assemblies are respectively moved closer to or farther away from each other.

[0013] In the above technical solution, the bracket includes a mounting block and a vertical plate, the mounting block is connected to the output shaft of the cylinder, the vertical plate is installed on the mounting block, the transverse through groove is arranged on the vertical plate, and the U-shaped frame is installed on the inner side of the vertical plate by bolts.

[0014] In the above technical solution, two connecting rods are provided on the inner end surface of the mounting block, and the connecting rods are arranged parallel to the output of the cylinder. Two guide holes are provided on the vertical plate, and each connecting rod is movably connected to one of the guide holes.

[0015] The inner end of the connecting rod is provided with a limit head, and the limit head is arranged at the inner end of the vertical plate;

[0016] A spring is sleeved on each of the connecting rods, and the two ends of the spring respectively abut against the inner end surface of the mounting block and the outer end surface of the vertical plate. The spring pushes the vertical plate to move inward along the connecting rod and makes the inner end surface of the vertical plate abut against the limit head.

[0017] In the above technical solution, a touch sensor is also installed on the inner end surface of the mounting block, and the touch sensor is electrically connected to the corresponding cylinder.

[0018] In the above technical solution, a limiting bolt is screwed onto the mounting block beside the touch sensor, and the inner end surface of the limiting bolt is flush with the inner end surface of the touch sensor.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] 1. In the utility model, two sets of positioning components are arranged opposite to each other, and the output shaft of the cylinder is extended to push the four positioning rollers closer to each other, so that the product in the positioning space is centered and faces the labeling mechanism, ensuring the accuracy of the labeling, and there is no need to replace the conveyor belt, which can effectively reduce costs, expand the scope of application, and improve the convenience of labeling after product replacement;

[0021] 2. In the utility model, the positioning roller is installed on the bracket through a U-shaped frame, and the distance between the two positioning rollers can be adjusted, so that it can be applied to products of different sizes, improve the scope of application and reduce costs;

[0022] 3. The neutral plate of the utility model can move relative to the mounting block, and the spring is used to give thrust to the plate. By setting a touch sensor, the positioning accuracy of the product can be effectively guaranteed, and the problem of crushing the product or not limiting the position in place can be prevented, thereby ensuring the positioning quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the first embodiment of the present utility model;

[0024] Figure 2 It is a side view of the positioning assembly in the first embodiment of the present utility model.

[0025] Among them: 1. Positioning space; 2. Cylinder; 3. Positioning roller; 4. U-shaped frame; 5. Horizontal through groove; 6. Bolt; 7. Frame; 8. Conveyor belt; 9. Screw hole; 10. Mounting block; 11. Vertical plate; 12. Connecting rod; 13. Guide hole; 14. Limit head; 15. Spring; 16. Touch sensor; 17. Limit bolt. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0027] Example 1: See Figure 1 , 2 As shown, a sleeve label positioning device comprises two sets of positioning components arranged opposite to each other, and a positioning space 1 is formed between the two sets of positioning components;

[0028] The positioning assembly includes a cylinder 2 and two positioning rollers 3, and the two positioning rollers 3 are connected to the output shaft at the inner end of the cylinder 2 via a connecting mechanism;

[0029] The connecting mechanism includes a bracket and two sets of U-shaped frames 4, wherein the U-shaped frames 4 are arranged at the inner end of the bracket, the opening of the U-shaped frames 4 is arranged inward, and each of the positioning rollers 3 is rotatably installed in the U-shaped frames 4;

[0030] The outer end of the bracket is connected to the output shaft of the inner end of the cylinder 2. The bracket is provided with two transverse through grooves 5, which are arranged perpendicular to the U-shaped frame 4. Each U-shaped frame 4 is connected to the two transverse through grooves 5 via bolts 6.

[0031] In this embodiment, two sets of positioning components are installed on a frame 7, a conveyor belt 8 is provided on the frame, a cylinder is installed on the front and rear outer walls of the frame, and two positioning rollers are arranged directly above the conveyor belt. The conveyor belt is used for conveying products, and the positioning space is arranged directly below the label sleeve mechanism. In actual use, when the product is transported to the positioning space through the conveyor belt, a photoelectric sensor will be set on the frame. The photoelectric sensor is electrically connected to the cylinder in the two sets of positioning components. At this time, the cylinder receives the signal, the cylinder works, and the cylinder output shafts of the two sets of positioning components extend, driving the positioning rollers on both sides to approach each other. Among them, the two sets of positioning components are respectively set on both sides of the conveyor belt. The two positioning rollers of the front positioning component are set opposite to the positioning rollers of the rear positioning component. The product is a cylindrical structure. When the cylinder output shaft extends, it drives the positioning rollers on both sides to approach each other. In the process of the positioning rollers approaching each other, they will first contact the outer surface of the product, and then the four positioning rollers on both sides push the product to the center, so that it is directly under the sleeve label mechanism, and then the cylinder output shaft retracts, driving the positioning roller away from the product, and the sleeve label mechanism pushes the sleeve label down, so that the sleeve label is directly and accurately sleeved on the outside of the product to complete the sleeve label action. After the sleeve label is completed, the conveyor belt continues to drive the product to move, so that the product after the sleeve label is sent away, and the next product enters the positioning space, waiting for the next positioning and sleeve label action. The utility model is suitable for medium and low speed labeling equipment, but not for high speed labeling equipment. A U-shaped frame is used for the installation of positioning rollers, and there is a spacing between the two positioning rollers, so that when the product is pushed and positioned, it can be positioned by the two positioning rollers and pushed to move toward the middle of the positioning space. At the same time, the distance between the two positioning rollers will be smaller than the diameter of the product, so as to ensure the pushing stability and quality of the product, and the two positioning rollers push the product so that the axis of the product will be directly opposite to the center between the two positioning rollers, so that the product is centered.

[0032] At the same time, the transverse through slot is used, so when changing products of different diameters, the bolts can be directly loosened so that the U-shaped frame can move relative to the transverse through slot, thereby adjusting the distance between the two positioning rollers, which is suitable for products of different diameters and improves the scope of application. In addition, two transverse through slots are used, and the two transverse through slots are arranged at intervals up and down, and the two transverse through slots are arranged parallel to each other, so that when the U-shaped frame is adjusted in position, the two positioning rollers can be arranged parallel to each other. In this embodiment, the positioning rod is arranged perpendicular to the top surface of the conveyor belt, so that it can be ensured to be parallel to the product, ensuring the stability and quality of the product's pushing and positioning.

[0033] See also Figure 1 , 2 As shown, the outer end surface of the U-shaped frame 4 contacts the inner end surface of the bracket;

[0034] Two spaced apart screw holes 9 are provided on the outer end surface of the U-shaped frame 4, each of the screw holes 9 is arranged opposite to one of the transverse through slots 5, and the inner end of each of the bolts 6 passes through one of the transverse through slots 5 and is screwed to one of the screw holes 9, and the bolts 6 limit the U-shaped frame 4 to the bracket.

[0035] In this embodiment, the inner end surface of the bracket is perpendicular to the top surface of the conveyor belt, and the outer end surface of the U-shaped frame is in contact with the inner end surface of the bracket. In this way, after the U-shaped frame and the bracket are connected and locked by bolts, the U-shaped frame can be prevented from shaking. At the same time, two bolts are used to connect the bracket and the U-shaped frame to prevent the U-shaped frame from rotating relative to the bracket, ensuring that the positioning roller will not rotate when it is subjected to the reaction force of the product movement, ensuring the accuracy and stability of the position of the positioning roller during use, and the positioning roller is rotatably installed in the U-shaped frame, so that when the product moves or rotates relatively, the positioning roller also rotates relatively, preventing sliding friction between the product and the positioning roller, and preventing scratches or damage to the product.

[0036] See also Figure 1 , 2 As shown, the inner end outer surface of the positioning roller is arranged outside the inner end of the U-shaped frame, the left side outer surface of the positioning roller is arranged outside the left side of the U-shaped frame, and the right side outer surface of the positioning roller is arranged outside the right side of the U-shaped frame.

[0037] In this way, when the cylinder output shaft extends, only the outer surface of the positioning roller contacts the product, and the U-shaped frame does not contact the product, thereby ensuring the accuracy and stability of the product push positioning.

[0038] When the cylinder output shafts in the two groups of positioning assemblies extend or retract at the same time, the positioning rollers in the two groups of positioning assemblies are respectively moved closer to or farther away from each other.

[0039] See also Figure 1 , 2 As shown, the bracket includes a mounting block 10 and a vertical plate 11, the mounting block 10 is connected to the output shaft of the cylinder 2, the vertical plate 11 is mounted on the mounting block 10, the transverse through slot 5 is arranged on the vertical plate 11, and the U-shaped frame 4 is installed on the inner side of the vertical plate 11 via bolts 6. The two ends of the transverse through slot are respectively connected to the front side and the rear side of the vertical plate, the transverse channel is arranged transversely, and the two ends of the transverse through slot are respectively arranged close to the left side and the right side of the vertical plate.

[0040] The mounting block is used to connect with the cylinder, and the U-shaped frame is connected through the vertical plate and the mounting block, which is convenient for the installation and disassembly of the vertical plate. At the same time, if the vertical plate or the mounting block is damaged or deformed, the corresponding parts can be directly replaced without replacing the entire bracket, and the maintenance and replacement costs can be much lower.

[0041] See also Figure 1 , 2 As shown, two connecting rods 12 are provided on the inner end surface of the mounting block 10, and the connecting rods 12 are arranged parallel to the output of the cylinder 2. Two guide holes 13 are provided on the vertical plate 11, and each of the connecting rods 12 is movably connected to one of the guide holes 13;

[0042] The inner end of the connecting rod 12 is provided with a limiting head 14 , and the limiting head 14 is arranged at the inner end of the vertical plate 11 ; the outer diameter of the limiting head is larger than the diameter of the guide hole.

[0043] A spring 15 is sleeved on each of the connecting rods 12, and the two ends of the spring 15 respectively abut against the inner end surface of the mounting block 10 and the outer end surface of the vertical plate 11. The spring 15 pushes the vertical plate 11 to move inward along the connecting rod 12 and makes the inner end surface of the vertical plate 11 abut against the limit head 14.

[0044] In this embodiment, the stroke of the cylinder is sometimes not very precise or very stable. If the cylinder is set with a predetermined stroke, the moving distance of the positioning roller is also a fixed stroke. Since the stroke of the cylinder adopts a preset stroke, there is a problem that the positioning roller cannot push the product to move completely in place, or after it is completely in place, it will cause a certain amount of extrusion to the product, which is prone to product deformation. Therefore, by setting the spring and the connecting rod, the vertical plate is connected to the guide hole and the connecting rod, and the elastic force of the spring is used to push the vertical plate away from the mounting block. In this way, the stroke of the cylinder can be set larger. After the cylinder output shafts on both sides are extended, when the spring is in the extended state, the circular structure formed between the four positioning rollers will be smaller than the outer diameter of the product. Therefore, it can ensure that the product is accurately positioned in the center of the positioning space. At the same time, due to the existence of the spring elasticity, after the positioning roller is completely in contact with the product, it will push the product to move toward the middle of the positioning space. At this time, the spring may be compressed a little bit. When the positioning rods of the positioning components on both sides are in contact with the product, the output shaft of the cylinder will extend a little. At this point, since the product is limited by the positioning rods on both sides, the relative force of the mounting block and the vertical plate will compress the spring. If there is a certain gap between the distance between the product and the cylinders on both sides, the compression of the springs on both sides will be different. The spring with a larger compression will recover a part of it, pushing the product toward the positioning roller on the other side with a smaller spring compression, so that the spring on the other side is also compressed a little bit again, so that the compression of the springs on both sides is basically consistent, which can ensure that the product script is in the center of the positioning space and directly below the labeling mechanism. Then the output shaft of the cylinder retracts, driving the corresponding positioning roller away from the product, and then the labeling mechanism performs the labeling action to ensure the labeling quality.

[0045] See also Figure 1 , 2 As shown, a touch sensor 16 is also installed on the inner end surface of the mounting block 10, and the touch sensor 16 is electrically connected to the corresponding cylinder 2. A limit bolt 17 is screwed on the mounting block 10 beside the touch sensor 16, and the inner end surface of the limit bolt 17 is flush with the inner end surface of the touch sensor 16.

[0046] Furthermore, as the product is being transported on the conveyor belt, before it is positioned by the positioning assembly, the product may approach one of the positioning assemblies on one side. Therefore, the positioning roller on that side will first contact the product and be pushed by the positioning roller on that side to move the product. When the cylinder just starts working, its instantaneous acceleration and the positioning roller contact the product may cause the product to squeeze the positioning roller, causing the spring to be squeezed, that is, the positioning roller and the vertical plate move closer to the mounting block. In order to prevent excessive movement, the touch sensor is set to detect whether the positioning roller moves too much toward the vertical plate. If both sets of positioning assemblies are in contact with the product and the cylinder output shafts are fully extended, and the touch sensor on one side also detects the vertical plate, there will be problems such as failure of the spring on that side, requiring maintenance personnel to perform repairs in a timely manner. At the same time, the setting of the limit bolt can use the limit bolt to mechanically limit the movement of the vertical plate toward the mounting block to prevent the vertical plate from damaging the touch sensor.

[0047] At the same time, in this embodiment, a mounting screw hole is provided on the inner end face of the mounting block, and the limit bolt and the mounting screw hole are screwed together. In this way, the position of the limit bolt can be adjusted according to the different types and sizes of touch sensors, thereby improving the scope of application and adjusting the limit distance of the vertical plate relative to the mounting block.

Claims

1. A sleeve label positioning device, characterized in that: It comprises two sets of positioning components arranged opposite to each other, and a positioning space is formed between the two sets of positioning components; The positioning assembly includes a cylinder and two positioning rollers, and the two positioning rollers are connected to the output shaft at the inner end of the cylinder via a connecting mechanism; The connecting mechanism comprises a bracket and two sets of U-shaped frames, wherein the U-shaped frame is arranged at the inner end of the bracket, the opening of the U-shaped frame is arranged inward, and each positioning roller is rotatably installed in the U-shaped frame; The outer end of the bracket is connected to the output shaft of the inner end of the cylinder. The bracket is provided with two transverse through slots, which are arranged perpendicular to the U-shaped frame. Each U-shaped frame is connected to the two transverse through slots via bolts.

2. The label sleeve positioning device according to claim 1, characterized in that: The outer end surface of the U-shaped frame contacts the inner end surface of the bracket; The outer end surface of the U-shaped frame is provided with two spaced screw holes, each of which is arranged opposite to one of the transverse through slots, and the inner end of each of the bolts passes through one of the transverse through slots and is screwed to one of the screw holes, and the bolts limit the U-shaped frame to the bracket.

3. The label sleeve positioning device according to claim 1, characterized in that: The inner end outer surface of the positioning roller is arranged outside the inner end of the U-shaped frame, the left outer surface of the positioning roller is arranged outside the left side of the U-shaped frame, and the right outer surface of the positioning roller is arranged outside the right side of the U-shaped frame.

4. The label sleeve positioning device according to claim 1, characterized in that: When the cylinder output shafts in the two groups of positioning assemblies extend or retract at the same time, the positioning rollers in the two groups of positioning assemblies are respectively moved closer to or farther away from each other.

5. The label sleeve positioning device according to claim 1, characterized in that: The bracket includes a mounting block and a vertical plate, the mounting block is connected to the output shaft of the cylinder, the vertical plate is mounted on the mounting block, the transverse through groove is arranged on the vertical plate, and the U-shaped frame is mounted on the inner side surface of the vertical plate via bolts.

6. The label sleeve positioning device according to claim 5, characterized in that: Two connecting rods are provided on the inner end surface of the mounting block, and the connecting rods are arranged parallel to the output of the cylinder. Two guide holes are provided on the vertical plate, and each connecting rod is movably connected to one of the guide holes. The inner end of the connecting rod is provided with a limit head, and the limit head is arranged at the inner end of the vertical plate; A spring is sleeved on each of the connecting rods, and the two ends of the spring respectively abut against the inner end surface of the mounting block and the outer end surface of the vertical plate. The spring pushes the vertical plate to move inward along the connecting rod and makes the inner end surface of the vertical plate abut against the limit head.

7. The label sleeve positioning device according to claim 6, characterized in that: A touch sensor is also installed on the inner end surface of the mounting block, and the touch sensor is electrically connected to the corresponding cylinder.

8. The label sleeve positioning device according to claim 7, characterized in that: A limiting bolt is screwed on the mounting block beside the touch sensor, and the inner end surface of the limiting bolt is flush with the inner end surface of the touch sensor.

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