Secondary tracking device and numerical control plate-free printing machine

Abstract

The utility model relates to the field of label printing, in particular to a secondary tracking device and a numerical control plate-free printer, the secondary tracking device comprises a transverse supporting plate and a tracking instrument, and a plurality of transversely arranged clamping holes are formed in the side face of the supporting plate in the length direction of the supporting plate; the supporting plate is slidably connected with a sliding part, and the tracking instrument is installed on the sliding part. A clamping unit is arranged on the sliding part, the clamping unit comprises an elastic piece and a clamping bead, and the clamping bead is pressed in the clamping hole under the pressure action of the elastic piece; when the sliding part slides along the supporting plate, the clamping beads slide along the arranged clamping holes. According to the scheme, the problem that the position of an existing tracking instrument is troublesome to adjust is solved, and the position of the tracking instrument can be adjusted conveniently.

Description

Technical Field

[0001] This utility model relates to the field of label printing, specifically to a secondary tracking device and a CNC plateless printing machine. Background Technology

[0002] A CNC plateless printing press is an advanced label printing device, comprising a release unit, a printing unit, a conveying unit, and a rewinding unit. The release unit releases the label paper, which is then conveyed to the printing unit for printing. After printing, the label is conveyed again to the rewinding unit for winding. It uses a computer control system, enabling direct printing from digital files, eliminating the plate-making step found in traditional printing.

[0003] Currently, some labels require secondary printing. Secondary printing refers to printing additional colors in specific locations on top of the initial printed pattern and colors. This method can be used to increase the complexity of the pattern, refine existing designs, or correct color deviations.

[0004] During the secondary printing process, the label paper passes through the printing press, which prints again on the label paper that has already been printed once. During this process, tracking instruments (such as photoelectric sensors or cameras) are needed to track the position of the pattern and color printed on the label paper the first time. This ensures the accuracy of the relative position of the pattern and color printed in the second time with the pattern and color printed in the first time, avoids large differences between the positions of the first and second printings that would affect the printing effect, and guarantees the quality of the secondary printing.

[0005] Currently, the tracking instrument is set up as follows: a support frame is installed on the CNC plateless printing machine, and the tracking instrument is fixed to the support frame by multiple bolts. The tracking instrument detects and tracks the patterns and colors on the passing labels. However, when printing different label products, the printing position and width of the labels vary, so the position of the tracking instrument needs to be adjusted. This requires loosening the fixing bolts to unlock the support frame and the tracking instrument, sliding the tracking instrument on the support frame to change its position, and then tightening the bolts to fix the support frame and the tracking instrument in place. This entire process of adjusting the position of the tracking instrument is very cumbersome. Utility Model Content

[0006] The present invention aims to provide a secondary tracking device and a CNC plateless printing machine to solve the problem of cumbersome position adjustment of current tracking instruments, and to facilitate the adjustment of the position of the tracking instrument.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a secondary tracking device, comprising a horizontal support plate and a tracking instrument, wherein a plurality of horizontally arranged locking holes are provided on the side of the support plate along the length direction of the support plate; a sliding part is slidably connected to the support plate, and the tracking instrument is mounted on the sliding part; a locking unit is provided on the sliding part, the locking unit comprising an elastic element and a locking ball, the locking ball being pressed into the locking hole under the pressure of the elastic element; when the sliding part slides along the support plate, the locking ball slides along the arranged locking holes.

[0008] To achieve the above objectives, the present invention also adopts the following technical solution: a CNC plateless printing machine, including a frame and a conveyor roller, the conveyor roller being rotatably connected to the frame, and also including a secondary tracking device of the present application, with a support plate installed on the frame.

[0009] The principle and advantages of the above-mentioned solution are as follows: The tracking instrument of this solution is mounted on a sliding part, which is mounted on a support plate. The support plate supports both the sliding part and the tracking instrument. The sliding part can slide on the support plate. When the sliding part is stationary on the support plate, the locking ball is pressed into the locking hole under the pressure of the elastic element. At this time, the locking ball is locked in the locking hole, thus making the sliding part stably located on the support plate. The sliding part will not slide freely on the support plate, thereby ensuring that the tracking instrument can stably detect and track the label. When it is necessary to change the position of the tracking instrument, the sliding part is pushed to slide. The sliding part slides on the support plate, and at the same time, the locking ball is forced to slide out of the locking hole. The locking hole squeezes the elastic element, realizing the retraction of the locking ball. In this way, the locking ball will not be stuck in the locking hole and affect the sliding of the sliding part on the support plate. The locking ball slides along the arranged locking holes during the sliding process of the sliding part. Once the tracking instrument has changed position, the locking bead moves into another locking hole. Under the action of the elastic element, the locking bead continues to be locked in the corresponding locking hole, thereby locking the sliding part. The sliding part is stably located on the support plate, and the tracking instrument stably detects and tracks the label paper.

[0010] In summary, the solution proposed in this application allows for the adjustment of the tracking instrument's position on the support plate by applying a pushing force to the sliding part. After the sliding stops, the locking ball automatically locks into the locking hole, thus automatically fixing the sliding part. Compared with the prior art, it eliminates the need to tighten or loosen multiple bolts, making the operation simple and convenient, and making the adjustment of the tracking instrument's position much easier.

[0011] In addition, depending on the width of the label paper, the support plate in this application can be equipped with multiple sliding parts of different numbers, thereby enabling the placement of different numbers of tracking instruments on the support plate. This changes the number of tracking instruments on the support plate, thus enabling tracking and detection of labels of different widths.

[0012] Preferably, as an improvement, the sliding part is provided with a socket, into which the support plate is inserted. Thus, by inserting the support plate into the socket, the support plate supports the sliding part. Through the relative sliding of the support plate and the socket, the sliding part slides on the support plate.

[0013] Preferably, as an improvement, the sliding part is provided with an elastic element groove, one end of which communicates with the insertion hole. Both the retaining bead and the elastic element are located in the elastic element groove, with the side of the retaining bead protruding from the inner wall of the insertion hole. The elastic element groove is used to accommodate the elastic element and the retaining bead, thus limiting their movement. Because the inner wall of the insertion hole is in contact with the side wall of the support plate, the side of the retaining bead in this application protrudes from the inner wall of the insertion hole, thereby allowing the side of the retaining bead to naturally press into the retaining hole on the outer side of the support plate.

[0014] Preferably, as an improvement, the sliding part is detachably connected to a pressure plate. The end of the elastic element groove away from the insertion hole is opposite to the pressure plate, and the end of the elastic element away from the retaining bead abuts against the pressure plate. Thus, the retaining bead and the elastic element are placed into the elastic element groove one after the other, with the end of the elastic element away from the retaining bead protruding from the groove. Then, by detachably connecting the pressure plate to the sliding part, the pressure plate presses against the end of the elastic element away from the retaining bead, causing the elastic element to compress within the elastic element groove and generate pressure on the retaining bead. Simultaneously, the pressure plate seals the opening of the elastic element groove, preventing the elastic element from detaching. The pressure plate is detachably fixed to the sliding part, offering advantages such as convenient assembly and simple disassembly of the pressure plate, elastic element, and retaining bead. By removing the pressure plate, the elastic element and retaining bead can be removed from the elastic element groove, facilitating the replacement of worn retaining beads.

[0015] Preferably, as an improvement, the sliding part has a mounting groove on its side, and the end of the elastic element groove away from the insertion hole is connected to the bottom of the mounting groove; the pressure plate is located in the mounting groove. Thus, the mounting groove enables the installation and positioning of the pressure plate.

[0016] Preferably, as an improvement, the pressure plate is detachably connected to the sliding part by bolts or screws.

[0017] Preferably, as an improvement, the elastic element is a compression spring.

[0018] Preferably, as an improvement, there are multiple snap-fit ​​units, with each snap-fit ​​bead snapping into a different snap-fit ​​hole. Therefore, using multiple snap-fit ​​units with multiple snap-fit ​​beads snapping into different snap-fit ​​holes results in a more stable engagement between the bead and the hole compared to using a single snap-fit ​​bead, making the sliding part more stable when stationary on the support plate.

[0019] Preferably, as an improvement, the retaining ball is a steel ball. When the retaining ball slides relative to the side of the support plate, it will wear down. However, using a steel ball is more wear-resistant and can improve the service life of the retaining ball. Attached Figure Description

[0020] Figure 1 This is a perspective view of a secondary tracking device on a CNC plateless printing press.

[0021] Figure 2 This is a three-dimensional view of a secondary tracking device on a CNC plateless printing press from another perspective.

[0022] Figure 3 for Figure 1 A magnified view of A in the middle.

[0023] Figure 4 This is a cross-sectional view of the sliding part.

[0024] Figure 5 This is a side view of the sliding part (without the pressure plate installed).

[0025] Figure 6 for Figure 4 A magnified view of E in the middle. Detailed Implementation

[0026] The following detailed description illustrates the specific implementation method:

[0027] The reference numerals in the accompanying drawings include: frame 1, conveyor roller 2, label paper 3, support plate 4, tracking instrument 5, sliding part 6, pressure plate 7, screw 8, retaining ball 9, elastic element 10, elastic element groove 11, mounting groove 12, fixing hole 13, retaining hole 14, insertion hole 15.

[0028] The basic implementation examples are as follows: Figures 1-6 As shown: This application discloses a CNC plateless printing machine, including a release unit, a secondary tracking device, a printing unit, and a winding unit. The release unit releases the label paper 3, the printing unit prints on the label paper 3, and the winding unit winds up the printed label paper 3. The focus of this embodiment is on improving the secondary tracking device; the release unit, printing unit, and winding unit remain unchanged, as they are prior art and will not be described in detail in this embodiment.

[0029] The CNC plateless printing machine in this embodiment includes a frame 1 and a conveyor roller 2. The conveyor roller 2 is rotatably connected to the frame 1 through bearings. A secondary tracking device is installed on the frame 1. In this way, the conveyor roller 2 conveys the label paper 3 to the secondary tracking device, and the secondary tracking device tracks and detects the label paper 3.

[0030] The structure of the secondary tracking device is described in detail below: This embodiment discloses a secondary tracking device, including a horizontal support plate 4 and a tracking instrument 5. The end of the support plate 4 is fixed to the frame 1 by bolts. (Combined with...) Figure 3 As shown, a plurality of horizontally arranged locking holes 14 are provided on one side surface of the support plate 4 along the length direction of the support plate 4. A sliding part 6 is slidably connected to the support plate 4. In this embodiment, the sliding part 6 is a sliding block, and the sliding block is provided with a horizontal insertion hole 15 (in conjunction with...). Figure 4 As shown, the support plate 4 is inserted into the socket 15. The tracking instrument 5 is mounted (e.g., by adhesive or screws 8) on the side of the sliding part 6. The tracking and detection ports (e.g., camera ports, sensor detection windows) of the tracking instrument 5 face downwards.

[0031] Combination Figure 4 and Figure 6 As shown, the sliding part 6 in this embodiment is provided with a snap-fit ​​unit, which includes an elastic element 10 and a snap-fit ​​ball 9. In this embodiment, the elastic element 10 is a compression spring. Of course, in other embodiments, other elastic elements 10 can also be used, such as rubber strips. Figure 5 As shown, in this embodiment, the sliding part 6 has a mounting groove 12 on the side away from the tracking instrument 5. The mounting groove 12 contains multiple elastic element grooves 11 arranged in a horizontal row, each opposite to a locking hole 14. In this embodiment, there are three elastic element grooves 11; however, in other embodiments, the number can vary. The elastic element grooves 11 are connected to the insertion holes 15. Thus, the locking beads 9 are placed into the three elastic element grooves 11, and then three elastic elements 10 are placed within the elastic element grooves 11, with the elastic elements 10 protruding from the bottom of the mounting groove 12. A fixing hole 13 is provided at the bottom of the mounting groove 12. Combined with... Figure 4 As shown, a pressure plate 7 is placed in the mounting groove 12 and screwed into the fixing hole 13 by screws 8, thereby achieving a detachable connection between the pressure plate 7 and the sliding part 6. The pressure plate 7 abuts against the end of the elastic member 10 extending from the elastic member groove 11, pressing the elastic member 10 into the elastic member groove 11, and the elastic member 10 deforms to exert pressure on the retaining bead 9.

[0032] Combination Figure 6 As shown, in this embodiment, the diameter of the end opening connecting the elastic groove 11 and the insertion hole 15 is smaller than the diameter of the retaining bead 9, so that the retaining bead 9 is located in the elastic groove 11. Figure 6 The right sidewall of the elastic groove 11 wraps around the retaining bead 9, preventing the retaining bead 9 from detaching from the right end of the elastic groove 11. However, the side of the retaining bead 9 can still protrude from the end of the elastic groove 11 under the pressure of the elastic element 10, thus being able to be locked in the retaining hole 14 (the retaining hole 14 is shaped to match the part of the retaining bead 9 that protrudes from the elastic groove 11).

[0033] In this embodiment, the retaining bead 9 is pressed into the retaining hole 14 under the pressure of the elastic member 10; when the sliding part 6 slides along the support plate 4, the retaining bead 9 slides along the arranged retaining holes 14. In this embodiment, the retaining bead 9 is a steel ball.

[0034] The specific implementation process is as follows: In this embodiment Figure 1 Two sliding parts 6 are placed on the support plate 4, thereby enabling two tracking instruments 5 to track and detect the label paper 3. Of course, in actual use, different numbers of sliding parts 6 and tracking instruments 5 can be set on the support plate 4 according to the different widths of the label paper 3, thus enabling tracking and detection of label paper 3 of different widths. To install the sliding part 6 on the support plate 4, simply insert the support plate 4 into the insertion hole 15 and push the sliding part 6 forcefully towards the frame 1. This achieves the installation of the sliding part 6 on the support plate 4 and the frame 1, making the operation simple and convenient.

[0035] In this embodiment, the sliding part 6 can slide on the support plate 4. When the sliding part 6 is stationary on the support plate 4, the three locking beads 9 are pressed into the locking holes 14 by the pressure of the three elastic elements 10. At this time, the locking beads 9 are locked in the locking holes 14, so that the sliding part 6 is stably located on the support plate 4 and will not slide freely on the support plate 4, thereby ensuring that the tracking instrument 5 can stably detect and track the label paper 3.

[0036] When the position of the tracking instrument 5 needs to be changed, the sliding part 6 is pushed and slids. The sliding part 6 slides on the support plate 4, and at the same time, the locking ball 9 slides out from the locking hole 14. The locking hole 14 squeezes the elastic element 10, realizing the retraction of the locking ball 9. In this way, the locking ball 9 will not get stuck in the locking hole 14 and affect the sliding part 6 on the support plate 4. During the sliding process of the sliding part 6, when the locking ball 9 moves between different locking holes 14, the locking ball 9 continuously retracts and slides along the arranged locking holes 14.

[0037] After the position of the tracking instrument 5 is changed, the locking bead 9 moves into another locking hole 14. Under the action of the elastic element 10, the locking bead 9 continues to be locked in the locking hole 14, thereby locking the sliding part 6. The sliding part 6 is stably located on the support plate 4, and the tracking instrument 5 stably detects and tracks the label paper 3.

[0038] In this embodiment, the pressure plate 7 is detachably connected to the sliding part 6. After the retaining bead 9 and the elastic element 10 are inserted into the elastic element groove 11, the pressure plate 7 is detachably connected to the sliding part 6, thus sealing the elastic element groove 11 and preventing the retaining bead 9 and the elastic element 10 from falling out of the elastic element groove 11. When the retaining bead 9 needs to be replaced, the pressure plate 7 is removed, exposing the end of the elastic element groove 11 away from the insertion hole 15, allowing the elastic element 10 and the retaining bead 9 to be removed from the end of the elastic element groove 11 away from the insertion hole 15.

[0039] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A secondary tracking device, comprising a transverse support plate and a tracking instrument, characterized in that: The side of the support plate has multiple horizontally arranged locking holes along its length; a sliding part is slidably connected to the support plate, and the tracking instrument is mounted on the sliding part; the sliding part is provided with a locking unit, which includes an elastic element and a locking ball, and the locking ball is pressed into the locking hole under the pressure of the elastic element; when the sliding part slides along the support plate, the locking ball slides along the arranged locking holes.

2. The secondary tracking device according to claim 1, characterized in that: The sliding part is provided with a socket, and the support plate is inserted into the socket.

3. The secondary tracking device according to claim 2, characterized in that: The sliding part is provided with an elastic element groove, one end of which is connected to the insertion hole. The retaining bead and the elastic element are both located in the elastic element groove, and the side of the retaining bead protrudes from the inner wall of the insertion hole.

4. The secondary tracking device according to claim 3, characterized in that: The sliding part is detachably connected to a pressure plate. The end of the elastic element groove away from the insertion hole is opposite to the pressure plate, and the end of the elastic element away from the retaining bead abuts against the pressure plate.

5. A secondary tracking device according to claim 4, characterized in that: The sliding part has a mounting groove on its side, and the end of the elastic element groove away from the insertion hole is connected to the bottom of the mounting groove; the pressure plate is located in the mounting groove.

6. A secondary tracking device according to claim 4, characterized in that: The pressure plate is detachably connected to the sliding part by bolts or screws.

7. The secondary tracking device according to claim 1, characterized in that: The elastic element is a compression spring.

8. A secondary tracking device according to claim 1, characterized in that: The number of the snap-fit ​​units is multiple, and the snap-fit ​​beads of the multiple snap-fit ​​units are respectively snapped into multiple snap-fit ​​holes.

9. A secondary tracking device according to claim 1, characterized in that: The ball is a steel ball.

10. A CNC plateless printing machine, comprising a frame and a conveyor roller, wherein the conveyor roller is rotatably connected to the frame, characterized in that: It also includes a secondary tracking device as described in any one of claims 1-9, wherein the support plate is mounted on the frame.

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