Label cutting and positioning device and printing machine

Abstract

The utility model relates to the field of label printing, in particular to a label cutting and positioning device and a printer, which comprise a butt-joint plate, two positioning mechanisms are arranged on the butt-joint plate, and each positioning mechanism comprises a positioning pressing block, an electromagnet, a moving rod, an attraction block, a supporting rod and a spring; the supporting rod is located below the butt-joint plate, the electromagnet is fixedly installed on the supporting rod, the positioning pressing block is located above the butt-joint plate, a rod hole is formed in the butt-joint plate, the movable rod penetrates through the rod hole to be vertically connected with the butt-joint plate in a sliding mode, the movable rod is fixedly connected with the positioning pressing block, the bottom end of the movable rod is fixedly connected with the attraction block, and the electromagnet attracts the attraction block after being powered on; the spring is connected between the attraction block and the butt joint plate. By means of the scheme, the problem that when the new label paper and the old label paper are in butt joint, the new label paper and the old label paper are prone to displacement is solved.

Description

Technical Field

[0001] The utility model relates to the field of label printing, in particular to a label cutting and positioning device and a printing machine. Background Art

[0002] The label printing machine is used to print patterns on label paper. The label printing machine includes a printing unit, a paper feeding system and a winding system. The paper feeding system includes a unwinding roller, on which blank label paper is wound. The unwinding roller releases the blank label paper. The label paper is transmitted through the printing unit. The printing unit prints patterns or texts on the label paper. The label paper is then moved to the winding roller of the winding system through transmission, and the winding roller winds up the printed label paper.

[0003] When the label paper on the unwinding roller is released, it is necessary to stop the machine and replace the new unwinding roller. The end of the label paper on the new unwinding roller should be connected with the tail of the label paper released by the previous unwinding roller, and the connecting parts should be glued with tape. Then the machine can be turned on. The connected label paper can be transmitted forward normally.

[0004] The current docking is carried out on a docking plate. During docking, the tail of the label paper released by the previous unwinding roller (hereinafter referred to as the old label paper) moves to the docking plate, and then the label paper of the new unwinding roller (hereinafter referred to as the new label paper) is pulled out a section, and the new label paper is pulled onto the docking plate, and then the excess part of the tail of the old label paper or the excess part of the end of the new label paper is cut off, avoiding the upper and lower overlap of the end of the new label paper and the tail of the old label paper (the overlap is caused by the end of the new label paper or the tail of the old label paper being too long, so the excess part needs to be cut off), the end of the new label paper and the tail of the old label paper can be better relative and connected, and then they can be bonded with tape.

[0005] However, in this process, the new label paper and the old label paper are in a loose state, and the new label paper and the old label paper are easy to shift, which increases the difficulty of docking the new label paper and the old label paper. In addition, when cutting the label paper, a knife is also required for cutting. The operator needs to carry the knife with him all the time. If the knife is lost or not carried with him, he needs to find the knife, which is very inconvenient. Utility Model Content

[0006] The utility model aims to provide a label cutting and positioning device and a printing machine, so as to solve the problem that the new label paper and the old label paper are easily displaced when they are butted against each other.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a label cutting and positioning device, including a docking plate, two groups of positioning mechanisms are arranged on the docking plate, and the two groups of positioning mechanisms include a positioning pressure block, an electromagnet, a moving rod, an attraction block, a support rod and a spring; the support rod is located below the docking plate, the electromagnet is fixedly installed on the support rod, the positioning pressure block is located above the docking plate, a rod hole is provided on the docking plate, the moving rod passes through the rod hole and is vertically slidably connected to the docking plate, the moving rod is fixedly connected to the positioning pressure block, the bottom end of the moving rod is fixedly connected to the attraction block, and the electromagnet attracts the attraction block after being energized; the spring is connected between the attraction block and the docking plate.

[0008] The principle and advantage of this solution are: in this application, two sets of positioning mechanisms respectively position the new label paper and the old label paper. When the electromagnet is not energized, there is a gap between the positioning block and the docking plate, and the label paper can move in the gap between the positioning block and the docking plate, and the positioning block will not hinder the transmission of the label paper.

[0009] When it is necessary to dock the label paper, the electromagnet is energized. After being energized, the electromagnet generates magnetism, and the electromagnet attracts the attraction block. The attraction block moves downward, and the attraction block drives the positioning block to move downward through the moving rod. The positioning block is pressed on the docking plate, thereby positioning and fixing the label paper on the docking plate. In this way, the label paper will not move, which is convenient for docking new label paper and old label paper, improving the accuracy of docking and avoiding the problem of inaccurate docking and tilted docking due to displacement of label paper.

[0010] When the label paper is docked, the electromagnet is powered off. After the electromagnet is powered off, it loses its magnetism and no longer attracts the attraction block. The spring causes the moving rod to move upward and reset, and the positioning block moves upward and no longer positions and presses the label paper. At this time, the printing press is started and the label paper can be transmitted.

[0011] Preferably, as an improvement, the spring is sleeved on the moving rod. Thus, the moving rod plays a role in limiting the lateral position of the spring, the spring will not bend during the deformation process, and the elastic deformation process of the spring is more stable.

[0012] Preferably, as an improvement, a buffer block is fixedly connected to the support rod, the buffer block is opposite to the attraction block, and the top of the buffer block is located above the top of the electromagnet. Therefore, when the attraction block is attracted by the electromagnet and moves downward, it will collide with the buffer block instead of directly colliding with the electromagnet. The buffer block protects the electromagnet and reduces damage caused by direct head-on collision between the attraction block and the electromagnet.

[0013] Preferably, as an improvement, the number of electromagnets, moving rods, springs and attraction blocks on each set of positioning mechanisms is two; the positioning block is long and narrow, and the positioning block is laterally arranged on the docking plate, and the two moving rods are respectively fixed at the two ends of the positioning block.

[0014] Thus, the two moving rods are located at both ends of the positioning block, so that the label paper passes through the space between the two moving rods, and the moving rods will not affect the movement and transmission of the label paper on the docking plate. At the same time, when the moving rods drive the positioning block to move downward, the moving rods pull downward from both ends of the positioning block, so that the downward force on the positioning block is uniform, and the positioning block has a good positioning and pressing effect on the label paper.

[0015] Preferably, as an improvement, a rubber pad is fixedly provided at the bottom of the positioning pressing block. When the positioning pressing block moves downward, the rubber pad is elastic and can play a buffering role, thereby reducing the collision between the positioning pressing block and the docking plate.

[0016] Preferably, as an improvement, a plurality of grooves are provided on the surface of the docking plate. Thus, the blade slides in the grooves to cut the label paper on the docking plate. By providing the grooves, on the one hand, the blade cuts the label paper at the grooves, which can reduce the number of blade scratches on the surface of the docking plate; on the other hand, it can ensure that the cutting positions of the new and old label papers are both at the grooves, and the cutting positions of the new and old label papers are both carried out according to the grooves, so that the cutting position of the new label paper and the cutting position of the old label paper are located at the same position, which is relatively uniform, and is convenient for the new cut paper to be docked with the old cut label paper after cutting.

[0017] Preferably, as an improvement, a cutting blade mechanism is slidably connected transversely in the scoring groove. Thus, the cutting blade mechanism is used to cut the label paper, and the cutting blade mechanism is located in the scoring groove. The cutting blade mechanism does not need to be carried around, and the operation is simple and convenient, and there is no problem of losing the cutting blade or not carrying it around, and the problem of needing to find it will not occur.

[0018] Preferably, as an improvement, the cutting knife mechanism includes a blade, a transverse movement block and a handle, the blade is inserted into the groove, the top of the blade is connected to the transverse movement block, the transverse movement block is located on the docking plate, and the handle is fixed on the transverse movement block. Thus, by pushing the handle laterally, the transverse movement block moves laterally, and the blade slides laterally in the groove, thereby achieving cutting of the label paper.

[0019] Preferably, as an improvement, the bottom of the groove is connected to the bottom surface of the docking plate; the bottom of the blade is fixedly connected to a limit block, and the limit block is located at the bottom surface of the docking plate. Thus, the limit block can fix the blade on the docking plate, and the blade will not move upward and separate from the docking plate because the limit block is located at the bottom surface of the docking plate, so the blade is not easily lost.

[0020] The present application also discloses a printing machine, including the above-mentioned label cutting and positioning device. Therefore, any printing machine using the above-mentioned label cutting and positioning device falls within the protection scope of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the label cutting and positioning device, which mainly illustrates the upper surface of the docking plate and the related structure of the positioning mechanism.

[0022] Figure 2 It is a three-dimensional diagram of the label cutting and positioning device, which mainly illustrates the lower surface of the docking plate and the related structure of the positioning mechanism.

[0023] Figure 3 for Figure 1 A is an enlarged view of the middle image.

[0024] Figure 4 for Figure 2 Enlarged view of C in the middle.

[0025] Figure 5 for Figure 2 Enlarged view of B. DETAILED DESCRIPTION

[0026] The following is further described in detail through specific implementation methods:

[0027] The figure marks in the drawings of the specification include: docking plate 1, frame 2, first conveying roller 3, second conveying roller 4, positioning pressure block 5, moving rod 6, supporting rod 7, transverse block 8, handle 9, groove 10, limit block 11, attraction block 12, electromagnet 13, buffer block 14, spring 15.

[0028] Example 1

[0029] Basically as attached Figure 1-Figure 2 As shown: the label cutting and positioning device includes a docking plate 1, the left and right sides of the docking plate 1 are fixed with a frame 2 by screws, and the frame 2 is rotatably connected (by the matching method of the shaft and the hole) with a first conveying roller 3 and a second conveying roller 4, the first conveying roller 3 is located at one end of the docking plate 1, and the second conveying roller 4 is located at the other end of the docking plate 1, so that the label paper wrapped on the unwinding roller is released and conveyed to the top of the docking plate 1 through the first conveying roller 3, and then conveyed to the printing unit through the second conveying roller 4.

[0030] Two sets of positioning mechanisms are provided on the docking plate 1. Both sets of positioning mechanisms include a positioning block 5, an electromagnet 13, a moving rod 6, an attraction block 12, a support rod 7 and a spring 15. The support rods 7 in this embodiment are bent, and both ends of each support rod 7 are fixed (for example, by bolts) on the bottom surface of the frame 2. The support rods 7 are located below the docking plate 1, and there is a gap between the support rods 7 and the bottom surface of the docking plate 1. Figure 4As shown, the electromagnet 13 is fixedly installed (for example, fixed by screws) on the support rod 7. The positioning block 5 is located above the docking plate 1. Both positioning blocks 5 are in the shape of long strips. The length direction of the positioning blocks is the same as the left-right direction of the docking plate 1. Both ends of the positioning blocks 5 are fixed to the moving rod 6 (for example, welded or fixed by bolts). The docking plate 1 is provided with a rod hole. The moving rod 6 passes through the rod hole and is vertically slidably connected to the docking plate 1. The bottom end of the moving rod 6 is fixed to the attraction block 12 (fixed by welding or screws, for example). The attraction block 12 in this embodiment is an iron block. When the electromagnet 13 is energized, it generates magnetism and attracts the attraction block 12. In this embodiment, two electromagnets 13 are provided on each support rod 7. The two electromagnets 13 are respectively opposite to the attraction blocks 12 on the moving rods 6 at both ends of the positioning block 5.

[0031] Combination Figure 4 As shown, the spring 15 in this embodiment is connected between the attraction block 12 and the docking plate 1. Specifically, the spring 15 is sleeved on the moving rod 6, and the two ends of the spring 15 are respectively connected (for example, clamped or hung by a hook) to the bottom surface of the docking plate 1 and the attraction block 12. The spring 15 in this embodiment is a tension spring. A buffer block 14 is fixedly connected (for example, by bonding) to the support rod 7. The buffer block 14 is made of rubber material. The buffer block 14 is opposite to the attraction block 12, and the top of the buffer block 14 is located above the top of the electromagnet 13. Combined with Figure 4 As shown, in this embodiment, four buffer blocks 14 are provided around each electromagnet 13. Of course, in other embodiments, one buffer block 14 beside the electromagnet 13 can also be provided. Of course, in other embodiments, when there is one buffer block 14 beside the electromagnet 13, the buffer block 14 can be provided in a ring shape, and the buffer block 14 is sleeved on the outside of the electromagnet 13. In this embodiment, a rubber pad (not shown in the figure) is fixed (for example, by bonding) at the bottom of the positioning block 5. Figure 1 As shown, a plurality of notches 10 are provided on the surface of the docking plate 1. In this embodiment, there are three notches 10. The notches 10 are provided for the blade to slide in the notches 10, thereby cutting the label paper.

[0032] The present application also discloses a printing machine, comprising the above-mentioned label cutting and positioning device.

[0033] The specific implementation process is as follows: during the normal operation of the printing machine in this embodiment, the electromagnet 13 is not energized, and there is a gap between the positioning block 5 and the docking plate 1. The label paper released from the unwinding roller moves to the docking plate 1 through the first conveying roller 3, and the label paper passes through the gap between the positioning block 5 and the docking plate 1. The label paper passes through the second conveying roller 4 and continues to be conveyed toward the printing unit. The printing unit prints on the label paper, and the printed label paper is wound up by the winding roller.

[0034] When the label paper on the unwinding roller is released, the tail of the label paper is separated from the unwinding roller, and the tail of the label paper moves to the docking plate 1. At this time, the printing press is stopped, the label paper stops moving, and the label paper stops moving on the docking plate 1.

[0035] Then the unwinding roller is replaced, the label paper on the new unwinding roller is pulled to the first conveying roller 3, and the new label paper is pulled out from the first conveying roller 3. Figure 1 The lower part of the positioning pressing block 5 close to the first conveying roller 3 is pulled to the butt joint plate 1 to the right. At this moment, the end of the old label paper and the end of the new label paper are both located on the butt joint plate 1.

[0036] Then, the electromagnet 13 is energized. After being energized, the electromagnet 13 generates magnetism. The electromagnet 13 attracts the attraction block 12, and the attraction block 12 moves downward. The attraction block 12 moves downward to the buffer block 14 and contacts the buffer block 14, and the spring 15 is stretched at the same time. The attraction block 12 drives the positioning block 5 to move downward through the moving rod 6, and the bottom of the positioning block 5 is pressed on the docking plate 1, so as to position and fix the two label papers on the docking plate 1. Specifically, the positioning block 5 close to the first conveying roller 3 presses and positions the new label paper, and the positioning block 5 close to the second conveying roller 4 presses and positions the old label paper. In this way, neither the new label paper nor the old label paper will move, making it easier to dock the new label paper with the old label paper, thereby improving the accuracy of docking and avoiding the problem of inaccurate docking and tilted docking caused by the displacement of the label paper.

[0037] After the new and old label papers are butted together and glued together with adhesive tape, the electromagnet 13 is powered off. After the electromagnet 13 is powered off, it loses its magnetism and no longer attracts the attraction block 12. The spring 15 causes the attraction block 12 to move upward, and the attraction block 12 drives the moving rod 6 to move upward. The moving rod 6 moves upward and resets. Both positioning pressing blocks 5 move upward and no longer position and press the label paper. At this time, the printing press is started again, and the butted label paper can be transmitted.

[0038] In this embodiment, when docking the new label paper with the old label paper, it is assumed that the end of the old label paper is located on the side of the middle groove 10 away from the second conveying roller 4, and the end of the new label paper is located on the side of the middle groove 10 away from the first conveying roller 3. A blade is used to slide in the middle groove 10 of the docking plate 1, so as to cut the new label paper and the old label paper on the docking plate 1, so as to cut off the part of the new label paper located on the side of the groove 10 away from the first conveying roller 3, and cut off the part of the old label paper located on the side of the groove 10 away from the second conveying roller 4. In this way, it can be ensured that the cutting positions of the new and old label papers are both at the middle groove 10, and the cutting positions of the new and old label papers are both carried out according to the groove 10, so that the cutting position of the new label paper and the cutting position of the old label paper are located at the same position, which is relatively uniform, so that the new cut paper is conveniently docked with the old cut label paper after cutting, and the new label paper and the old label paper are docked relatively evenly, and then adhesive tape can be used for bonding. The other two grooves 10 also have the above-mentioned functions, which will not be repeated here.

[0039] Example 2

[0040] This embodiment provides another structure of a docking plate 1, in which a cutting knife mechanism is slidably connected in a horizontal direction in the groove 10 of the docking plate 1. Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the cutting knife mechanism includes a limit block 11, a blade (not shown because the blade is located in the groove 10), a traverse block 8 and a handle 9, combined with Figure 2 As shown, the bottom of the groove 10 is connected to the bottom surface of the docking plate 1; the blade is inserted into the groove 10, and the top of the blade is connected to the transverse block 8 located on the docking plate 1. The specific connection method is: a blade groove is provided at the bottom of the transverse block 8, and the top of the blade is inserted into the blade groove and fixed with screws. The handle 9 is fixed on the transverse block 8 by welding. The limit block 11 is located at the bottom surface of the docking plate 1, and a blade groove is also provided at the top of the limit block 11. The bottom of the blade is inserted into the blade groove at the top of the limit block 11, and the blade and the limit block 11 are fixed by screws. A cutting knife mechanism is provided in the three grooves 10 in this embodiment. In this embodiment, the distance between the bottom surface of the transverse block 8 and the top surface of the limit block 11 is greater than the thickness of the docking plate 1.

[0041] Thus, by pushing the handle 9 laterally, the lateral block 8 moves laterally (because the distance between the bottom surface of the lateral block 8 and the top surface of the limit block 11 is greater than the thickness of the docking plate 1, when the lateral block 8 moves laterally, there is a gap of 1-2mm between the lateral block 8 and the upper surface of the docking plate 1, so that the bottom of the lateral block 8 will not be tightly attached to the docking plate 1, ensuring smooth lateral movement of the lateral block 8), the blade slides laterally in the groove 10, and the lateral block 8 moves laterally above the label paper, thereby realizing the cutting of the label paper on the docking plate 1. The limit block 11 realizes the fixing of the blade on the docking plate 1. By the limit block 11 being located at the bottom surface of the docking plate 1, the blade will not move upward and detach from the docking plate 1, so that the blade is not easily lost. Since the distance between the bottom surface of the transverse moving block 8 and the top surface of the limit block 11 is greater than the thickness of the docking plate 1, when the limit block 11 moves driven by the blade, there is a 1-2mm gap between the limit block 11 and the lower surface of the docking plate 1, so that the limit block 11 will not be tightly attached to the docking plate 1, ensuring smooth lateral movement of the limit block 11.

[0042] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A label cutting and positioning device, comprising a docking plate, characterized in that: The docking plate is provided with two sets of positioning mechanisms, both of which include a positioning pressure block, an electromagnet, a moving rod, an attraction block, a support rod and a spring; the support rod is located below the docking plate, the electromagnet is fixedly mounted on the support rod, the positioning pressure block is located above the docking plate, a rod hole is provided on the docking plate, the moving rod passes through the rod hole and is vertically slidably connected to the docking plate, the moving rod is fixedly connected to the positioning pressure block, the bottom end of the moving rod is fixedly connected to the attraction block, and the electromagnet attracts the attraction block when energized; the spring is connected between the attraction block and the docking plate.

2. The label cutting and positioning device according to claim 1, characterized in that: The spring is sleeved on the moving rod.

3. The label cutting and positioning device according to claim 1, characterized in that: A buffer block is fixedly connected to the support rod, the buffer block is opposite to the attraction block, and the top of the buffer block is located above the top of the electromagnet.

4. The label cutting and positioning device according to claim 1, characterized in that: The number of electromagnets, moving rods, springs and attraction blocks on each set of positioning mechanisms is two; the positioning pressing block is in the shape of a long strip, and the positioning pressing block is horizontally arranged on the docking plate, and the two moving rods are respectively fixed at the two ends of the positioning pressing block.

5. The label cutting and positioning device according to claim 1, characterized in that: A rubber pad is fixedly provided on the bottom of the positioning pressing block.

6. The label cutting and positioning device according to claim 1, characterized in that: A plurality of grooves are arranged on the surface of the butt joint plate.

7. The label cutting and positioning device according to claim 6, characterized in that: A cutting knife mechanism is slidably connected in the slot in a transverse direction.

8. The label cutting and positioning device according to claim 7, characterized in that: The cutting knife mechanism comprises a blade, a transverse movement block and a handle. The blade is inserted into the groove, the top of the blade is connected to the transverse movement block, the transverse movement block is located on the docking plate, and the handle is fixed on the transverse movement block.

9. The label cutting and positioning device according to claim 8, characterized in that: The bottom of the groove is connected to the bottom surface of the docking plate; the bottom of the blade is fixedly connected to a limiting block, and the limiting block is located at the bottom surface of the docking plate.

10. A printing press, characterized in that: It comprises the label cutting and positioning device described in any one of claims 1-9.

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