The ribbon tensioning device of the label printing machine and the label printing machine

Abstract

This application provides a ribbon tensioning device for a label printing machine and the label printing machine itself. The ribbon tensioning device includes a fixing member and a tensioning member. The fixing member is disposed on the label printing machine and located below the ribbon being retrieved by the recovery roller. The tensioning member has a rotating part rotatably connected to the fixing member and a supporting part connected to the rotating part and in contact with the ribbon. The rotating part is angularly rotatably disposed on the fixing member. When the recovery roller normally retrieves the ribbon, the ribbon is tightened under the driving force of the recovery roller. As the ribbon is tightened, the supporting part rotates towards the fixing member. Once the ribbon is in a slack state, the supporting part rotates away from the fixing member, thus supporting the slack ribbon. In this way, the ribbon remains in a tightened state on the recovery path.

Description

Technical Field

[0001] This application relates to the field of printing and labeling machine technology, and more particularly to a ribbon tensioning device for printing and labeling machines and the printing and labeling machine itself. Background Technology

[0002] A label printer, also known as a label printing machine, is a device used to print labels. It can automatically print labels according to settings.

[0003] In the current label printing process, step 100: After the first label is printed, the output roller rotates counterclockwise to send the printed first label to the exit (while the printed first label is being sent to the exit, the second label will also move towards the exit; at this time, the second label is not directly under the print head). Step 200: When the second label needs to be printed, the printer's output roller needs to rotate clockwise to retract the second label to be printed under the print head and print it.

[0004] As is well known, the above printing process requires a ribbon. The specific working process of the ribbon is as follows: The mechanical structure includes a ribbon feeding roller and a ribbon take-up roller. The ribbon feeding roller rotates clockwise to feed the ribbon. At the print head position, the ribbon is in contact with the label paper, allowing the print head to print on the label paper. Specifically, the ribbon take-up step 300, which works simultaneously with step 100, involves the ribbon take-up roller rotating clockwise, causing the ribbon to wind around and be taken back to the ribbon take-up roller. The ribbon feeding step 400, which works simultaneously with step 200, involves the ribbon feeding roller rotating clockwise, causing the ribbon to be released and making the released ribbon adhere to the printed label paper below the print head.

[0005] However, as a large number of labels are printed, the amount of ribbon on the ribbon recovery roller gradually increases, and the ribbon recovery roller becomes thicker and its diameter increases. Since the clockwise rotation of both the ribbon recovery roller and the ribbon feeding roller is set to a fixed number of retraction cycles by the controller, the length of ribbon recovered by the ribbon recovery roller gradually decreases. This results in an increase in the amount of ribbon between the ribbon recovery roller and the print head, which becomes slack. Because the ribbon is relatively thin, this slack ribbon eventually gets folded and pulled under the label exit identification and detection device, affecting detection and identification, and causing product misjudgment.

[0006] Therefore, there is an urgent need for a ribbon tensioning device for a printing and labeling machine, as well as a printing and labeling machine, to solve the technical problems existing in the prior art to a certain extent. Utility Model Content

[0007] The purpose of this application is to provide a ribbon tensioning device for a printing and labeling machine and the printing and labeling machine, which can, to a certain extent, tension the ribbon located between the ribbon recovery roller and the print head, and solve the technical problem of detection, identification and judgment caused by the ribbon being in a slack state in the prior art.

[0008] This application provides a ribbon tensioning device for a label printing machine. The ribbon tensioning device is disposed on the original path of the ribbon being recovered by the recovery roller. The ribbon tensioning device includes: A fixing component is provided on the printing and labeling machine and is located below the ribbon that is recovered by the recycling roller; The tensioning member has a rotating part rotatably connected to the fixed member and a support part connected to the rotating part and capable of fitting with the ribbon; the rotating part is rotatably disposed on the fixed member at an angle, so that the ribbon is always in a tensioned state on the recycling path.

[0009] In the above technical solution, the fixing component further includes: A fixing plate is mounted on the printing and labeling machine at a first preset position via a connector; A connecting plate is perpendicularly connected to both sides of the fixing plate along the first direction at a second preset position; An installation space is provided between the fixing plate and the connecting plate.

[0010] In the above technical solution, the rotating part further includes: A rotating plate is positioned at a first preset angle in the installation space, and a connecting ring plate extends along its axial direction. A pin passes through the connecting ring plate along the first direction and is fixed to the connecting plate; A torsion spring, which is wound around the pin, with one end connected to the rotating plate and the other end connected to the fixed plate; The rotating plate rotates about the pin as its axis of rotation, so that the rotating plate moves closer to or further away from the fixed plate.

[0011] In the above technical solution, the rotating plate has connecting protrusions extending from the side opposite to the connecting ring plate and from both ends along the first direction, and a placement space is formed between the two connecting protrusions. The support portion includes a support roller disposed in the placement space, extending along the first direction, and having its two ends along the first direction respectively connected to the connecting protrusion.

[0012] In the above technical solution, the ribbon tensioning device of the printing and labeling machine further includes a limiting component; The limiting component includes a fixed edge, a limiting pin, and a limiting edge; The fixing edge is disposed below the rotating plate and extends from the fixing plate along a direction perpendicular to the first direction. The limiting edge is located on the side of the rotating plate away from the support roller, and is connected to the rotating plate at a second preset angle; The limiting pin passes through the fixed edge and extends toward the limiting edge.

[0013] In the above technical solution, two connecting ring plates are further provided, and the two connecting ring plates are respectively provided on both sides of the rotating plate along the first direction; The connecting ring plate and the rotating plate are respectively provided with the pin and the torsion spring.

[0014] In the above technical solution, the fixing component further includes a reinforcing plate; The fixing plate is connected to the printing and labeling machine via the reinforcing plate.

[0015] This application provides a printing and labeling machine, including the ribbon tensioning device of the above-mentioned printing and labeling machine, and the printing and labeling machine further includes: The housing has multiple mounting positions formed thereon; A label paper conveying component is disposed at one of the mounting positions on the housing and is used to convey label paper to the label paper outlet; A ribbon conveying component is disposed at another mounting position on the housing and is used to convey the ribbon to the label paper outlet; A ribbon recycling component is provided at another mounting position on the housing and is used to recycle the printed ribbon; the ribbon tensioning device of the printing and labeling machine is provided on the original path of the ribbon being recycled by the ribbon recycling component.

[0016] In the above technical solution, the ribbon recycling component further includes a recycling roller and a support component; The support member is disposed between the label paper outlet and the recycling roller, and the support member is used to convey the ribbon printed by the printing and labeling machine; The support member is inclined on the side near the recycling roller, so that the side of the support member near the recycling roller has an inclined slope for fixing the ribbon tensioning device of the printing and labeling machine.

[0017] Compared with the prior art, this application has the following beneficial effects: This application provides a ribbon tensioning device for a label printing machine. The ribbon tensioning device is disposed on the original path of the ribbon being recovered by the recovery roller. The ribbon tensioning device includes: A fixing component is provided on the printing and labeling machine and is located below the ribbon that is recovered by the recycling roller; The tensioning member has a rotating part rotatably connected to the fixed member and a support part connected to the rotating part and capable of fitting with the ribbon; the rotating part is rotatably disposed on the fixed member at an angle, so that the ribbon is always in a tensioned state on the recycling path.

[0018] In summary, since the rotating part and the fixed component are rotatably connected, and since the support part is connected to the rotating part, that is to say, the support part and the fixed component are rotatably connected. Since the support part is in contact with the ribbon, when the recovery roller normally recovers the ribbon, the ribbon can be tightened under the driving force of the recovery roller. As the ribbon is tightened, the support part will move towards the fixed component and rotate.

[0019] As labels are printed in large quantities, the amount of ribbon on the ribbon recovery roller gradually increases, and the ribbon recovery roller becomes thicker and its diameter gradually increases. Since the clockwise rotation of both the ribbon recovery roller and the ribbon feeding roller is set to a fixed number of retraction cycles by the controller during use, the length of ribbon recovered by the ribbon recovery roller gradually decreases. This results in an increase in the amount of ribbon between the ribbon recovery roller and the print head, which is in a slack state. However, with the design described in this application, once the ribbon is in a slack state, the support part rotates away from the fixed component, thus supporting the slack ribbon. In this way, under the aforementioned conditions, the ribbon remains taut on the recovery path. This means that no excess ribbon is on the recovery path, and the ribbon will not be folded and drawn into (wound into) the label exit identification and detection device. This solves the technical problems of affecting detection and identification judgment and product misjudgment that exist in the prior art. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the ribbon tensioning device of the printing and labeling machine provided in this application from a first-view perspective; Figure 2 A schematic diagram of the ribbon tensioning device of the printing and labeling machine provided in this application from a second perspective; Figure 3 A schematic diagram of the ribbon tensioning device for the printing and labeling machine provided in this application from a third-person perspective; Figure 4 A schematic diagram of the ribbon tensioning device of the printing and labeling machine provided in this application from a fourth-view perspective; Figure 5 for Figure 4 Enlarged view of point A in the image; Figure 6 A schematic diagram of the ribbon tensioning device of the printing and labeling machine provided in this application from a fifth-angle perspective; Figure 7 A schematic diagram of the printing and labeling machine provided in this application from a first-view perspective; Figure 8 for Figure 7 Enlarged view of point B in the image; Figure 9 A schematic diagram of the printing and labeling machine provided in this application from a second-view perspective; Figure 10 for Figure 9 Enlarged view of point C in the image; Figure 11 A schematic diagram of the printing and labeling machine provided in this application from a third-person perspective; Figure 12 for Figure 11 Enlarged view of point D in the image.

[0022] Reference numerals: 1-Fixing component; 101-Fixing plate; 102-Connecting plate; 103-First direction; 104-Installation space; 105-Reinforcing plate; 2-Tensioning component; 201-Rotating part; 202-Supporting part; 203-Rotating plate; 204-Connecting ring plate; 205-Pin; 206-Torsion spring; 207-Connecting convex plate; 208-Placement space; 209-Supporting roller; 3-Limiting component; 301-Fixing edge; 302-Limiting pin; 303-Limiting edge; 4-Label paper conveying component; 401-Feeding roller; 5-Shell; 501-Label paper outlet; 6-Belt conveyor component; 601-Conveyor roller; 602-Belt; 7-Ribbon recovery component; 701-Recovery roller; 702-Support component; 703-Inclined slope. Detailed Implementation

[0023] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order presented herein; rather, changes that will be apparent upon understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity. The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application. Throughout this specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. Conversely, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between. As used herein, the term "and / or" includes any one of the relevant items listed and any combination of any two or more of them. Although terms such as "first," "second," and "third" may be used herein to describe individual components, assemblies, regions, layers, or portions, these components, assemblies, regions, layers, or portions are not limited by these terms. More precisely, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as such in the examples may also be referred to as the second component, assembly, region, layer, or part. For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element.Therefore, the term "above" includes both "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., oscillating 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly. The terminology used herein is for describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprising," "including," and "having" enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. Variations in the shapes shown in the figures may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the figures but include changes in shape that occur during manufacturing. The features of the examples described herein may be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible as will be apparent upon understanding the disclosure of this application.

[0024] Example 1 To address the technical problem of the ribbon 602 in existing label printing machines becoming slack, this application provides a ribbon 602 tensioning device for a label printing machine. The following describes the device in conjunction with... Figures 1-12 The structure will be described in detail.

[0025] The ribbon tensioning device of this printing and labeling machine is first set on the path where the ribbon 602 is recovered by the recovery roller 701. Specifically, it is combined with... Figure 1 As shown, the tape tensioning device of the printing and labeling machine includes a fixing component 1, which is disposed on the printing and labeling machine. Specifically, the fixing component 1 is disposed on the housing 5 of the printing and labeling machine and is located below the tape 602 that is recovered by the recovery roller 701.

[0026] Specifically, combined Figure 2 As shown, the tape tensioning device of the label printer 602 further includes a tensioning member 2, which has a rotating part 201 rotatably connected to the fixed member 1 and a support part 202 connected to the rotating part 201 and capable of adhering to the tape 602. The rotating part 201 is rotatably disposed on the fixed member 1, ensuring that the tape is always in a tensioned state on the retraction path.

[0027] In summary, since the rotating part and the fixed component are rotatably connected, and since the support part is connected to the rotating part, that is to say, the support part and the fixed component are rotatably connected. Since the support part is in contact with the ribbon, when the recovery roller 701 recovers the ribbon normally, the ribbon can be tightened under the driving force of the recovery roller 701. While the ribbon is tightened, the support part will move towards the fixed component and rotate.

[0028] As labels are printed in large quantities, the amount of ribbon on the ribbon recovery roller gradually increases, and the ribbon recovery roller becomes thicker and its diameter gradually increases. Since the clockwise rotation of both the ribbon recovery roller and the ribbon feeding roller is set to a fixed number of retraction cycles by the controller during use, the length of ribbon recovered by the ribbon recovery roller gradually decreases. This results in an increase in the amount of ribbon between the ribbon recovery roller and the print head, which is in a slack state. However, with the design described in this application, once the ribbon is in a slack state, the support part rotates away from the fixed component, thus supporting the slack ribbon. In this way, under the aforementioned conditions, the ribbon remains taut on the recovery path. This means that no excess ribbon is on the recovery path, and the ribbon will not be folded and drawn into (wound into) the label exit identification and detection device. This solves the technical problems of affecting detection and identification judgment and product misjudgment that exist in the prior art.

[0029] In this embodiment, combined with Figure 1 As shown, the fixing component 1 includes a fixing plate 101, which is mounted on the printing and labeling machine at a first preset position via a connector. The connector can be a connecting bolt, meaning the fixing plate 101 is fixedly connected to the printing and labeling machine at the first preset position via a connecting bolt. The first preset position is the support component 702 described in Embodiment 2. Since the support component 702 has an inclined surface 703, the fixing component 1 and the bottom edge of the housing 5 also have an angle.

[0030] Still combined Figure 1 As shown, the fixing component 1 also includes a connecting plate 102, which is perpendicularly connected to both sides of the fixing plate 101 along the first direction 103 at a second preset position. The first direction 103 here is combined with... Figure 2 As shown, the connecting plate 102 is perpendicular to both ends of the fixing plate 101 along its length. The second preset position preferably refers to one end of the connecting plate 102 along its width. In other words, the connecting plate 102 and the fixing plate 101 form a groove-like structure.

[0031] This groove-like structure creates an installation space 104 between the fixing plate 101 and the connecting plate 102, where the installation space 104 is a spatial division.

[0032] In this embodiment, combined with Figure 2 and Figure 3 As shown, the rotating part 201 includes a rotating plate 203, which is disposed in the installation space 104 at a first preset angle, and a connecting ring plate 204 extends along its axial extension direction; specifically, the connecting ring plate 204 is located at both ends of the rotating plate 203 along the first direction 103, in other words, the connecting ring plate 204 is a lug structure extending from the rotating plate 203.

[0033] Combination Figure 4 and Figure 5 As shown, the rotating part 201 also includes a pin 205, which passes through the connecting ring plate 204 along the first direction 103 and is fixed to the connecting plate 102. Optionally, after the pin 205 passes through the connecting ring plate 204, it is fixed to the connecting plate 102 by welding.

[0034] Still combined Figure 4 and Figure 5 As shown, the rotating part 201 also includes a torsion spring 206, which is wound around the rod portion of the pin 205, with one end connected to the rotating plate 203 and the other end connected to the fixed plate 101.

[0035] Preferably, two connecting ring plates 204 are provided, and the two connecting ring plates 204 are respectively provided on both sides of the rotating plate 203 along the first direction 103. In addition, a pin 205 and a torsion spring 206 are respectively provided between the connecting ring plate 204 and the rotating plate 203.

[0036] In actual use, the rotating plate 203 rotates around the pin 205 as its rotation axis, allowing it to move closer to or further away from the fixed plate 101. Specifically, when the recovery roller 701 is normally recovering the ribbon, the driving force of the recovery roller 701 tightens the ribbon, causing the rotating plate 203 to press against the torsion spring 206. Once the ribbon is in a slack state, the torsion spring resets, causing the support to rotate away from the fixed component, thus supporting the slack ribbon.

[0037] In this embodiment, combined with Figure 3 As shown, the rotating plate 203 has connecting protrusions 207 extending from one side away from the connecting ring plate 204 and from both ends along the first direction 103, and a placement space 208 is formed between the two connecting protrusions.

[0038] Still combined Figure 3As shown, the support portion 202 includes a support roller 209, which is disposed in the placement space 208 and extends along a first direction 103. Both ends of the support roller 209 along the first direction 103 are respectively connected to the connecting protrusion 207. Optionally, both ends of the support roller 209 are welded to the connecting protrusion 207.

[0039] In this embodiment, combined with Figure 6 As shown, the tape tensioning device of the label printer 602 also includes a limiting member 3; specifically, the limiting member 3 includes a fixing edge 301, a limiting pin 302, and a limiting edge 303.

[0040] The fixing edge 301 is located below the rotating plate 203 and is located on the side of the fixing plate 101 perpendicular to the first direction 103; in addition, it limits the vertical fixing plate 101 and extends along the first direction 103.

[0041] The limiting edge 303 is located on the side of the rotating plate 203 away from the support roller 209 and is connected to the rotating plate 203 at a second preset angle; preferably, the second preset angle is 60°.

[0042] The limiting pin 302 passes through the fixed edge 301 and extends toward the limiting edge 303.

[0043] In actual use, when the rotating plate 203 rotates around the fixed plate 101, it does not rotate at an arbitrary angle, but is limited by the limiting frame. Specifically, when the limiting edge 303 abuts against the fixed edge 301, the rotating plate 203 will no longer be able to rotate. In other words, when the limiting edge 303 abuts against the fixed edge 301, the rotating plate 203 has already rotated to the maximum angle.

[0044] In this embodiment, combined with Figure 7 And refer to Figure 8 As shown, the fixing component 1 also includes a reinforcing plate 105; the fixing plate 101 is connected to the printing and labeling machine through the reinforcing plate 105. The reinforcing plate 105 is used to reinforce the fixing plate 101 to prevent the fixing component 1 from falling off the supporting component 702.

[0045] Example 2 This application also provides a printing and labeling machine in this embodiment, including the ribbon 602 tensioning device of the above-mentioned printing and labeling machine.

[0046] Combination Figure 7 As shown, the printing and labeling machine also includes a housing 5, on which multiple mounting positions are formed; the mounting positions are areas of the housing 5.

[0047] Combination Figure 8As shown, the label printing and labeling machine also includes a label paper conveying component 4, which is disposed at one of the mounting positions on the housing 5 and is used to convey the label paper to the label paper outlet 501. During use, the label paper conveying component 4 can convey the label paper with the label to the label paper outlet 501. Specifically, the label paper conveying component 4 includes a feed roller 401 on which the label paper is wound.

[0048] Combination Figure 8 As shown, the label printing machine also includes a ribbon conveying component 6, which is located at another mounting position on the housing 5 and is used to convey the ribbon 602 to the label paper outlet 501. During use, the ribbon conveying component 6 can convey the ribbon 602 to the label paper outlet 501. Specifically, the ribbon conveying component 6 includes a conveying roller 601 on which the ribbon 602 is wound.

[0049] Still combined Figure 8 As shown, the printing and labeling machine also includes a ribbon recycling component 7, which is installed in another mounting position on the housing 5 and is used to recycle the printed ribbon 602; the ribbon 602 tensioning device of the printing and labeling machine is located on the path of the ribbon 602 being recycled by the ribbon recycling component 7, so that the ribbon 602 is always in a tensioned state on the recycling path.

[0050] Specifically, the ribbon recycling component 7 includes a recycling roller 701 and a support component 702; wherein, the support component 702 is disposed between the label paper outlet 501 and the recycling roller 701, and the support component 702 is used to convey the ribbon 602 printed by the printing and labeling machine.

[0051] Furthermore, the support member 702 is inclined on the side near the recovery roller 701, so that the side of the support member 702 near the recovery roller 701 has an inclined slope 703 for fixing the tensioning device of the ribbon 602 of the printing labeling machine.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A ribbon tensioning device for a label printing machine, characterized in that, The ribbon tensioning device of the label printing machine is located on the path where the ribbon is recovered by the recovery roller. The ribbon tensioning device of the label printing machine includes: A fixing component is provided on the printing and labeling machine and is located below the ribbon that is recovered by the recycling roller; The tensioning member has a rotating part rotatably connected to the fixed member and a support part connected to the rotating part and capable of fitting with the ribbon; the rotating part is rotatably disposed on the fixed member at an angle, so that the ribbon is always in a tensioned state on the recycling path.

2. The ribbon tensioning device of the printing and labeling machine according to claim 1, characterized in that, The fixing component includes: A fixing plate is mounted on the printing and labeling machine at a first preset position via a connector; A connecting plate is perpendicularly connected to both sides of the fixing plate along the first direction at a second preset position; An installation space is provided between the fixing plate and the connecting plate.

3. The ribbon tensioning device of the printing and labeling machine according to claim 2, characterized in that, The rotating part includes: A rotating plate is positioned at a first preset angle in the installation space, and a connecting ring plate extends along its axial direction. A pin passes through the connecting ring plate along the first direction and is fixed to the connecting plate; A torsion spring, which is wound around the pin, with one end connected to the rotating plate and the other end connected to the fixed plate; The rotating plate rotates about the pin as its axis of rotation, so that the rotating plate moves closer to or further away from the fixed plate.

4. The ribbon tensioning device of the printing and labeling machine according to claim 3, characterized in that, The rotating plate has connecting protrusions extending from one side away from the connecting ring plate and from both ends along the first direction, with a placement space formed between the two connecting protrusions. The support portion includes a support roller disposed in the placement space, extending along the first direction, and having its two ends along the first direction respectively connected to the connecting protrusion.

5. The ribbon tensioning device of the printing and labeling machine according to claim 4, characterized in that, The ribbon tensioning device of the printing and labeling machine also includes a limiting component; The limiting component includes a fixed edge, a limiting pin, and a limiting edge; The fixing edge is disposed below the rotating plate and extends from the fixing plate along a direction perpendicular to the first direction. The limiting edge is located on the side of the rotating plate away from the support roller, and is connected to the rotating plate at a second preset angle; The limiting pin passes through the fixed edge and extends toward the limiting edge.

6. The ribbon tensioning device of the printing and labeling machine according to claim 3, characterized in that, Two connecting ring plates are provided, and the two connecting ring plates are respectively provided on both sides of the rotating plate along the first direction; The connecting ring plate and the rotating plate are respectively provided with the pin and the torsion spring.

7. The ribbon tensioning device of the printing and labeling machine according to claim 2, characterized in that, The fixing component also includes a reinforcing plate; The fixing plate is connected to the printing and labeling machine via the reinforcing plate.

8. A label printing and labeling machine, characterized in that, The printing and labeling machine includes a ribbon tensioning device as described in any one of claims 1-7, and the printing and labeling machine further includes: The housing has multiple mounting positions formed thereon; A label paper conveying component is disposed at one of the mounting positions on the housing and is used to convey label paper to the label paper outlet; A ribbon conveying component is disposed at another mounting position on the housing and is used to convey the ribbon to the label paper outlet; A ribbon recycling component is provided at another mounting position on the housing and is used to recycle the printed ribbon; the ribbon tensioning device of the printing and labeling machine is provided on the original path of the ribbon being recycled by the ribbon recycling component.

9. The printing and labeling machine according to claim 8, characterized in that, The ribbon recycling component includes a recycling roller and a support component; The support member is disposed between the label paper outlet and the recycling roller, and the support member is used to convey the ribbon printed by the printing and labeling machine; The support member is inclined on the side near the recycling roller, so that the side of the support member near the recycling roller has an inclined slope for fixing the ribbon tensioning device of the printing and labeling machine.

Images