Printing equipment

Abstract

The utility model discloses printing equipment which comprises a main machine support and a printing head, in the printing head, a printing back plate is installed on the main machine support, the printing back plate and a printing panel are arranged side by side in the first direction at intervals, and an elastic piece is connected to the printing back plate and the printing panel. Wherein the host support is provided with a plurality of mounting grooves which are arranged at intervals in the second direction, each mounting groove comprises a first groove body, at least one mounting groove comprises a second groove body, the second groove body is communicated with the first groove body, and the second groove body extends in the third direction and penetrates through the host support. According to the embodiment of the invention, the second groove body forms the sliding channel penetrating in the third direction, so that the printing panel translates or twists in the third direction to be mounted in the first groove body, the printing panel and the host bracket are detachably mounted, the mounting process is simple, and the assembly efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of printing technology, in particular to a printing device. BACKGROUND

[0002] Thermal transfer printing is to heat the carbon ribbon by a thermal print head, and the ink is melted on the label paper to form a pattern. In the printing device, the printing roller abuts against the printing panel of the thermal print head, and a paper passing channel is formed between the two for the label paper to pass through. In the related technology, the printing panel is movably installed on the main machine support of the machine body, and the printing panel and the main machine support are rotationally connected through hole shaft cooperation to adapt to label papers of different thicknesses. However, the assembly between the printing panel and the main machine support is complicated, and the main machine support needs to be disassembled when the printing panel is maintained or replaced, so the maintainability and disassembly convenience of the printing device need to be improved. CONTENT OF THE UTILITY MODEL

[0003] The embodiment of the present application provides a printing device, which can solve the problem of inconvenient installation of a print head in the printing device.

[0004] The embodiment of the present application provides a printing device, which comprises a print head and a main machine support, the print head comprises a print back plate, a print panel and an elastic piece; in a first direction, the print back plate and the print panel are arranged side by side and spaced apart, and the elastic piece is connected to the print back plate and the print panel respectively; the print back plate is installed on the main machine support; wherein the main machine support has a plurality of installation slots arranged in a second direction, the installation slots are open to one side of the elastic piece, each installation slot comprises a first slot body, and the second direction is perpendicular to the first direction; at least one installation slot comprises a second slot body, the second slot body is in communication with the first slot body, the second slot body extends along a third direction and penetrates through the main machine support, the third direction is perpendicular to the first direction and the second direction, the print panel enters the installation slot under the guidance of the second slot body, and is pushed to the side wall of the first slot body away from the second slot body under the action of the elastic piece and abuts against the side wall, and in the abutting state, the elastic piece is always in a compressed state.

[0005] In some embodiments, one of the installation slots with the second slot body is a first installation slot, and in the second direction, the second slot body of the first installation slot extends bidirectionally to the space between the installation slots adjacent to it; and / or, one of the installation slots with the second slot body is a second installation slot, and in the second direction, the second slot body of the second installation slot extends unidirectionally to the space between the installation slots adjacent to it.

[0006] In some embodiments, the printing device comprises a main body bottom shell and a main body cover shell, the main body cover shell is openably and closably mounted on the main body bottom shell; the main machine support comprises a plurality of mounting side plates, each of the mounting side plates has a mounting slot; the mounting side plate has a first side wall surface facing the main body cover shell, and the second slot body extends from the first slot body to the first side wall surface.

[0007] In some embodiments, the first slot body is arranged at an angle with the extending direction of the second slot body.

[0008] In some embodiments, the first slot body extends along the first direction, and the second slot body directly communicates with the first slot body; or, the mounting slot with the second slot body further comprises a third slot body, the first slot body and the second slot body are located on the same side of the third slot body, and the second slot body communicates with the first slot body through the third slot body.

[0009] In some embodiments, the first slot body comprises a first region and a second region, in the first direction, the distance from the first region to the printing back plate is less than the distance from the second region to the printing back plate, and the second slot body communicates with the first region.

[0010] In some embodiments, the printing panel has a plug-in part, the plug-in part is arranged in the first slot body, and the surface of the plug-in part is pushed to abut against the wall surface of the second region under the action of the elastic member, and the plug-in part is arranged at a distance from the second slot body.

[0011] In some embodiments, the first slot body extends along the first direction, and the length of the first slot body is S, S satisfies: 3mm≤S≤15mm.

[0012] In some embodiments, the printing back plate comprises a back plate main body and a plurality of back plate matching parts, the plurality of back plate matching parts are arranged at a distance along the second direction and connected to the back plate main body, the back plate matching parts are rotatably mounted on the main machine support, and the elastic members are respectively connected to the back plate main body and the printing panel, so that the printing back plate can rotate around the main machine support, thereby driving the printing panel to move.

[0013] In some embodiments, the host bracket comprises two first limiting portions spaced apart along the second direction, the two first limiting portions having first limiting surfaces facing each other; the printing panel further comprises two second limiting portions, the two second limiting portions having second limiting surfaces facing away from each other; along the second direction, the two second limiting portions are disposed between the two first limiting portions, and the first limiting surfaces and the second limiting surfaces are in contact to limit the position of the printing panel along the second direction.

[0014] In some embodiments, the host bracket comprises a plurality of mounting side plates, the mounting side plates comprising a main plate body and an auxiliary plate: the main plate body has the first slot body; the auxiliary plate is connected to the main plate body, and the auxiliary plate has the first side wall surface, wherein part of the second slot body is disposed on the main plate body and is in communication with the first slot body, and another part is disposed on the auxiliary plate and extends to the first side wall surface.

[0015] In some embodiments, the mounting side plate further comprises a reinforcing portion, along the second direction, the reinforcing portion is disposed on one side of the main plate body and connected to the main plate body, and the reinforcing portion is disposed around the circumferential side of the first slot body.

[0016] In some embodiments, the second slot body has a first port in communication with the first slot body, and the second slot body has a second port opened on the surface of the host bracket, along a direction perpendicular to the second direction, the size of the first port is L1, and the size of the second port is L2, wherein L1 and L2 satisfy: L1≤L2.

[0017] In some embodiments, the printing panel has a plug-in portion for plugging into the first slot body, and the size of the plug-in portion is d; wherein d and L1 satisfy: 0mm≤L1-d≤0.1mm.

[0018] In some embodiments, the printing panel has a plug-in portion for plugging into the first slot body, and the size of the plug-in portion is d; wherein d and L2 satisfy: 0.3mm≤L2-d≤1.5mm.

[0019] Based on the printing device of the embodiment of the application, at least one mounting slot of the host support is configured with a second slot body, the second slot body extends along a third direction and is provided through, so as to communicate the first slot body and the side wall surface of the host support, so that the sliding channel along the third direction is formed on the host support, under the guidance of the second slot body, the printing panel can be moved in translation or torsion along the third direction to be mounted in the first slot body, and then the printing panel and the side wall of the second slot body are kept in abutment under the elastic force of the elastic member. In this way, the printing panel and the host support can be detachably mounted, compared with the connection mode of assembling along the axial direction in the related art, the mounting process of the printing panel and the host support in the embodiment of the application is simple, which is helpful to improve the assembly efficiency, when the printing panel needs to be maintained or replaced, the printing panel can also be conveniently detached through the second slot body, and the maintainability of the printing device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0021] Figure 1 The structural schematic diagram of the printing device of an embodiment of the present application;

[0022] Figure 2 The exploded structural schematic diagram of the printing device of an embodiment of the present application;

[0023] Figure 3 The partial structural schematic diagram of the printing device of an embodiment of the present application;

[0024] Figure 4 The structural schematic diagram of the host support of an embodiment of the present application;

[0025] Figure 5 The structural schematic diagram of the host support of another embodiment of the present application;

[0026] Figure 6 The structural schematic diagram of the host support of another embodiment of the present application;

[0027] Figure 7 The structural schematic diagram of the printing panel of an embodiment of the present application;

[0028] Figure 8 The partial structural schematic diagram of the host support of an embodiment of the present application.

[0029] Reference signs:

[0030] 1, printing device;

[0031] 10, host bracket; 110, first installation slot; 120, second installation slot; 130, third installation slot; 101, first slot body; 102, second slot body; 11, installation side plate; 111, main plate body; 112, auxiliary protruding plate; 113, reinforcing part; 12, first limiting part; 13, bracket bottom plate;

[0032] 20, print head; 21, print back plate; 211, back plate main body; 212, back plate matching part; 22, print panel; 221, plug-in part; 222, panel main body; 223, second limiting part; 23, elastic member;

[0033] 30, print roller;

[0034] 40, machine body; 41, machine body bottom shell; 42, machine body cover shell;

[0035] 50, machine cover;

[0036] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0038] The present application provides a printing device, please refer to Figures 1-3 The printing device 1 includes a host bracket 10 and a print head 20, and the print head 20 includes a print back plate 21, a print panel 22 and an elastic member 23. The print back plate 21 is installed on the host bracket 10, and the print back plate 21 and the print panel 22 are arranged side by side and spaced apart in the first direction X, and the elastic member 23 is connected to the print back plate 21 and the print panel 22 respectively. The print roller 30 of the printing device 1 can be pressed against the side of the print panel 22 away from the print panel 22, and the print roller 30 and the print panel 22 together hold the label paper. When using label paper of different materials and thicknesses, the pressure of the print panel 22 on the print roller 30 is different. By controlling the interval distance between the print back plate 21 and the print panel 22, the compression amount of the elastic member 23 is adjusted to adjust the pressure of the print panel 22 on the print roller 30.

[0039] In the embodiment of the present application, the host bracket 10 has a plurality of installation slots arranged at intervals in the second direction Y, the installation slots are open to one side of the elastic member 23, and each installation slot includes a first slot body 101 for installing the printing panel 22. At least one installation slot includes a second slot body 102 in communication with the first slot body 101, the second slot body 102 extends along the third direction Z and penetrates the host bracket 10, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other. That is, the second slot body 102 communicates the first slot body 101 and the side wall surface of the host bracket 10, thereby forming a sliding channel penetrating along the third direction Z. Under the guidance of the second slot body 102, the printing panel 22 translates or twists along the third direction Z from the external space and enters the first slot body 101, and is pushed to the side wall of the first slot body 101 away from the second slot body 102 and abuts against the side wall under the action of the elastic member 23, and in the abutting state, the elastic member 23 is always in a compressed state. In this way, the detachable installation of the printing panel 22 and the host bracket 10 is realized. In the related art, the connection mode is assembled along the axial direction, and in the embodiment of the present application, the installation process of the printing panel 22 and the host bracket 10 is simple, which helps to improve the assembly efficiency. When the printing panel 22 needs to be maintained or replaced, the printing panel 22 can also be easily detached through the second slot body 102, thereby improving the maintainability of the printing device 1.

[0040] Please refer to Figures 4-6 One of the installation slots with the second slot body 102 is the first installation slot 110, and in the second direction Y, the second slot body 102 of the first installation slot 110 extends bidirectionally to communicate with the space between the installation slots adjacent thereto, that is, the second slot body 102 of the first installation slot 110 is provided penetratingly in the host bracket 10 in the second direction Y. In the process of guiding the printing panel 22 into the first slot body 101 through the second slot body 102, the printing panel 22 can be moved in the second direction Y to adjust the pose, thereby making the installation of the printing panel 22 more convenient. Alternatively, one of the installation slots with the second slot body 102 is the second installation slot 120, and in the second direction Y, the second slot body 102 of the second installation slot 120 extends unidirectionally to communicate with the space between the installation slots adjacent thereto, that is, the second slot body 102 of the second installation slot 120 is recessed in the side wall of the host bracket 10 in the second direction Y, which is beneficial to the overall rigidity of the host bracket 10. The second installation slot 120 provides a semi-closed guide channel, which can guide the printing panel 22 while limiting the freedom of movement of the printing panel 22 in the second direction Y, thereby preventing installation misalignment or disengagement due to excessive displacement.

[0041] In the embodiments of the present application, the host support 10 can form different installation structures according to different types of the plurality of installation slots. The installation slot in which only the first slot body 101 is defined is a third installation slot 130. The installation structures that can be formed by the host support 10 in the embodiments of the present application are introduced below.

[0042] In some embodiments, the host support has two installation slots arranged at intervals in the second direction Y, as shown in FIG. 1B. Figure 4 As shown in FIG. 1B, both of the installation slots are first installation slots 110. The printing panel 22 has two insertion parts 221 arranged in the second direction Y. When the printing panel 22 is installed, the two insertion parts 221 can be moved from the external space into the second slot body 102 of one first installation slot 110, respectively. The printing panel 22 is controlled to translate, so that the insertion parts 221 are moved in the second slot body 102 and enter the corresponding first slot body 101. The installation of the printing panel 22 is more convenient.

[0043] In some embodiments, the host support has two installation slots arranged at intervals in the second direction Y, both of which are second installation slots 120. The printing panel 22 has two insertion parts 221 arranged in the second direction Y. When the printing panel 22 is installed, one insertion part 221 is inserted and installed in the first slot body 101 of one second installation slot 120, and the other insertion part 221 is moved from the external space into the second slot body 102 of the other second installation slot 120. The printing panel 22 is controlled to twist, so that the other insertion part 221 enters the corresponding first slot body 101 along the second slot body 102, thereby achieving the installation of the printing panel 22. In this way, the printing panel 22 is installed conveniently, and after the assembly is completed, the side wall of the second slot body 102 facing the first slot body 101 can form a limit for the insertion part 221, thereby reducing the risk of the insertion part 221 coming out.

[0044] In some embodiments, the host support has two installation slots arranged at intervals in the second direction Y, as shown in FIG. 1B. Figure 5 As shown in FIG. 1B, one of the installation slots is a third installation slot 130, and the other installation slot is a first installation slot 110. The printing panel 22 has two insertion parts 221 arranged in the second direction Y. When the printing panel 22 is installed, one insertion part 221 is inserted and installed in the first slot body 101 of the third installation slot 130, and the other insertion part 221 is moved from the external space into the second slot body 102 of the first installation slot 110. The printing panel 22 is controlled to move, so that the other insertion part 221 enters the corresponding first slot body 101 along the second slot body 102, thereby achieving the installation of the printing panel 22. In this way, the printing panel 22 is installed conveniently, and after the assembly is completed, the slot body of the third installation slot 130 does not penetrate to the external space, the risk of the insertion part 221 coming out is smaller, and the installation stability of the printing panel 22 is better.

[0045] In some embodiments, the main unit bracket has two mounting slots spaced apart in the second direction Y, such as Figure 6 As shown, one mounting slot is a third mounting slot 130, and the other is a second mounting slot 120. The printing panel 22 has two insertion portions 221 arranged along the second direction Y. When installing the printing panel 22, one insertion portion 221 is inserted into the first groove 101 of the third mounting slot 130, and the other insertion portion 221 moves from the external space into the second groove 102 of the second mounting slot 120. The printing panel 22 is then twisted to allow the other insertion portion 221 to enter the corresponding first groove 101 along the second groove 102, thus achieving the installation of the printing panel 22. In this way, the printing panel 22 is easy to install, and after assembly, the groove of the third mounting slot 130 does not extend into the external space, and the second groove 102 of the second mounting slot 120 does not extend through in the second direction Y, thereby limiting the two insertion portions 221. The risk of the printing panel 22 detaching is low, and the installation stability is good.

[0046] In some embodiments, the host bracket 10 may also be provided with two or more mounting slots, wherein all mounting slots may be first mounting slots 110, so that the printing panel 22 is mounted to the first slot 101 under the guidance of the second slot 102 of the plurality of first mounting slots 110. Alternatively, among the plurality of mounting slots, one mounting slot disposed on the outer side along the second direction Y is a third mounting slot 130, and the remaining mounting slots are first mounting slots 110. Alternatively, among the plurality of mounting slots, two mounting slots disposed on the outer side along the second direction Y are respectively a third mounting slot 130 and a second mounting slot 120, and the remaining mounting slots are first mounting slots 110. In actual assembly, when the host bracket 10 is provided with two or more mounting slots, the printing panel 22 is correspondingly configured with a plurality of plug-in portions 221, wherein a portion of the printing panel 22 is hollowed out so that the plug-in portion 221 located in the middle region along the second direction Y can be mounted in the mounting slot.

[0047] In this embodiment, the printing device 1 further includes a body 40, which includes a bottom shell 41 and a top shell 42. The top shell 42 is closably mounted on the bottom shell 41, forming an accommodating space between the top shell 42 and the bottom shell 41. The main support 10 is disposed in the accommodating space and mounted on the bottom shell 41. The main support 10 includes multiple mounting side plates 11, each with a mounting groove. The mounting side plate 11 has a first side wall facing the top shell 42, and a second groove 102 extends from the first groove 101 to the first side wall. In actual assembly, after the main support 10 is mounted on the bottom shell 41, the printing panel 22 can be mounted on the main support 10 from top to bottom, making the installation operation more convenient.

[0048] In some embodiments, the first slot 101 is arranged at an angle with the extension direction of the second slot 102, so as to reduce the damage of the second slot 102 to the strength of the host support 10. If the extension direction of the first slot 101 is the same as that of the second slot 102, a long and continuous gap is formed on the host support 10, which reduces the strength of the host support 10. For example, the first slot 101 can extend along the first direction X, i.e., the extension direction of the first slot 101 is perpendicular to the extension direction of the second slot 102. At this time, the elastic force of the elastic member 23 is approximately the same as the extension direction of the first slot 101, and the printing panel 22 moves more smoothly in the first slot 101 under the action of the elastic member 23. Alternatively, the first slot 101 extends along a direction at an angle with the first direction X.

[0049] In some embodiments, the first slot 101 extends along the first direction X, and the second slot 102 directly communicates with the first slot 101, so as to reduce the length of the slot of the mounting slot as much as possible, thereby reducing the damage to the strength of the host support 10. Alternatively, the mounting slot with the second slot 102 further comprises a third slot, the first slot 101 and the second slot 102 are located on the same side of the third slot, and the second slot 102 communicates with the first slot 101 through the third slot. By arranging the third slot to communicate the first slot 101 and the second slot 102, the position of the second slot 102 can be flexibly arranged according to the requirements, and the second slot 102 can be arranged at a position away from other components, so as to facilitate the installation operation of the printing panel 22.

[0050] In some embodiments, the first slot 101 comprises a first region and a second region, the first region and the second region are oppositely arranged along the extension direction of the first slot 101. In the first direction X, the distance from the first region to the printing backboard 21 is less than the distance from the second region to the printing backboard 21, and the second slot 102 communicates with the first region. In this way, the printing panel 22 enters the first slot 101 and is abutted against the wall surface of the second region under the action of the elastic member 23. In the use process, the printing panel 22 may move in the first slot 101 under the impact of external force. By arranging the second slot 102 at a position away from the second region of the first slot 101, the risk of the printing panel 22 being detached from the second slot 102 is reduced, and the installation stability of the printing panel 22 is maintained.

[0051] In some embodiments, the printing panel 22 has a plug-in part 221, and the host bracket 10 has two installation slots, for example. The printing panel 22 includes a panel body 222 and two plug-in parts 221 respectively connected to both ends of the panel body 222 along the second direction Y. The plug-in part 221 is arranged in the first slot body 101, and the surface of the plug-in part 221 is pushed to abut against the wall surface of the second area under the action of the elastic member 23. The plug-in part 221 is arranged in the second slot body 102. When the printing panel 22 slightly moves, the interval between the plug-in part 221 and the second slot body 102 can still maintain physical blocking to prevent accidental disengagement.

[0052] When the printing panel 22 is installed, the plug-in part 221 is located in the first area of the first slot body 101, the compression amount of the elastic member 23 is the largest, the plug-in part 221 moves towards the second area of the first slot body 101, the compression amount of the elastic member 23 gradually decreases, the plug-in part 221 abuts against the wall surface of the second area of the first slot body 101, and the elastic member 23 is always in a compressed state. In order to control the pressure of the printing panel 22 on the printing roller 30 within a proper range, the length of the first slot body 101 needs to be reasonably designed. In some embodiments, the first slot body 101 extends along the first direction X, and the length of the first slot body 101 is S, which satisfies: 3mm≤S≤15mm.

[0053] By controlling the length of the first slot body 101 to satisfy the above range, the compression amount of the elastic member 23 when the printing panel 22 abuts against the wall surface of the second area of the first slot body 101 is relatively appropriate, so that the printing panel 22 and the printing roller 30 maintain a proper pressure to clamp the label paper. If S>15mm, the first slot body 101 is too long, a longer elastic member 23 needs to be arranged, and the elastic member 23 is more likely to deviate during the stress process, which may cause the connection between the elastic member 23 and the printing back plate 21 or the printing panel 22 to fail. If S<3mm, the first slot body 101 is too short, the interval distance between the printing panel 22 and the printing back plate 21 is short, and the compression amount of the elastic member 23 is large in the pressing state. The pressure between the printing roller 30 and the printing panel 22 is too large, which is difficult to adapt to label paper with a larger thickness.

[0054] Please continue to refer to Figure 6The host bracket 10 comprises a plurality of mounting side plates 11, and each mounting side plate 11 comprises a main plate body 111 and an auxiliary protruding plate 112. The main plate body 111 has a first slot 101, and the auxiliary protruding plate 112 is connected to the main plate body 111 and has a first side wall surface. Part of the second slot 102 is arranged on the main plate body 111 and is in communication with the first slot 101, and the other part is arranged on the auxiliary protruding plate 112 and extends to the first side wall surface. By arranging the auxiliary protruding plate 112, the length of the mounting side plate 11 along the third direction Z is increased, and on this basis, the weakening of the structural strength of the mounting side plate 11 caused by the second slot 102 along the third direction Z is small. In addition, the arrangement of the auxiliary protruding plate 112 provides additional space, so that the second slot 102 has sufficient extension length, and when the plug-in part 221 slides into the first side wall surface, the initial impact load is borne by the wall surface of the auxiliary protruding plate 112 for defining the second slot 102, thereby reducing the impact on the first slot 101 and reducing the risk of damage to the first slot 101.

[0055] In some embodiments, the mounting side plate 11 further comprises a reinforcing portion 113 arranged on one side of the main plate body 111 along the second direction Y and connected to the main plate body 111. The reinforcing portion 113 is arranged around the periphery of the first slot 101, and when the wall surface of the first slot 101 is subjected to the force of the printing panel 22, the reinforcing portion 113 can disperse the stress borne by the main plate body 111, reduce the deformation of the main plate body 111, and further enhance the structural strength of the mounting side plate 11.

[0056] As shown in FIG. 1, Figure 7 The second slot 102 has a first port in communication with the first slot 101, and the second slot 102 has a second port arranged on the surface of the host bracket 10. In the direction perpendicular to the second direction Y, the size of the first port is L1, and the size of the second port is L2, wherein L1 and L2 satisfy: L1≤L2. The size of the first port is larger, and the plug-in part 221 is easy to slide into the first port. The size of the second port is smaller, which reduces the risk of the plug-in part 221 in the first slot 101 from being pulled out from the second port. Along the third direction Y, at least part of the slot of the second slot 102 gradually decreases in size from the first side wall surface toward the first slot 101. For example, the size of the part of the second slot 102 close to the second port gradually decreases in the direction from the first side wall surface toward the first slot 101, so as to guide the plug-in part 221 to enter the first slot 101 along the second slot 102.

[0057] In some embodiments, the printing panel 22 has a plug-in portion 221 for plugging into the first slot 101, and the size of the plug-in portion 221 in the direction perpendicular to the second direction Y is d. Optionally, the plug-in portion 221 is configured as a cylinder to facilitate the plug-in portion 221 to be twistedly installed, and d is the cross-sectional diameter of the cylinder. Wherein, d, L1 satisfy: 0mm≤L1-d≤0.1mm. By controlling the value of L1-d to satisfy the above range, the plug-in portion 221 can enter the first slot 101 from the second port, while reducing the risk of the plug-in portion 221 from the second port out of the first slot 101.

[0058] In some embodiments, the printing panel 22 has a plug-in portion 221 for plugging into the first slot 101, and the size of the plug-in portion 221 in the direction perpendicular to the second direction Y is d. Optionally, the plug-in portion 221 is configured as a cylinder to facilitate the plug-in portion 221 to be twistedly installed, and d is the cross-sectional diameter of the cylinder. Wherein, d, L2 satisfy: 0.3mm≤L2-d≤1.5mm. By controlling the value of L2-d to satisfy the above range, the plug-in portion 221 can easily enter the second slot 102 from the first port, if L2-d<0.3mm, it is not conducive to guide the installation of the plug-in portion 221, and if L2-d>1.5mm, the size of the second port is too large, and the printing panel 22 is easy to be separated from the host support 10.

[0059] In some embodiments, the printing back plate 21 includes a back plate body 211 and a plurality of back plate fitting portions 212, the plurality of back plate fitting portions 212 are spaced apart along the second direction Y and connected to the back plate body 211, the back plate fitting portions 212 are rotatably installed on the host support 10, and the elastic members 23 are respectively connected to the back plate body 211 and the printing panel 22, so that the back plate fitting portions 212 can rotate around the host support 10, thereby driving the printing panel 22 to move. In the printing operation, by controlling the rotation angle of the back plate fitting portions 212 relative to the host support 10, the distance between the back plate body 211 and the printing panel 22 and the compression amount of the elastic members 23 can be adjusted, thereby adjusting the pressure of the printing panel 22 on the printing roller 30 to adapt to label paper of different materials and thicknesses.

[0060] Please refer to Figure 8The host bracket 10 comprises two first limiting parts 12 arranged at intervals along the second direction Y, and the two first limiting parts 12 have first limiting surfaces facing each other. The host bracket 10 comprises a bracket bottom plate 13, and the mounting side plate 11 and the first limiting part 12 are connected to the bracket bottom plate 13. Optionally, when the host bracket 10 is provided with two mounting side plates 11, the two first limiting parts 12 are arranged between the two mounting side plates 11 along the second direction Y. The printing panel 22 further comprises two second limiting parts 223 arranged side by side along the second direction Y, and the second limiting part 223 is connected to one end of the panel main body 222 along the third direction Z. The two second limiting parts 223 have second limiting surfaces facing away from each other. Along the second direction Y, the two second limiting parts 223 are arranged between the two first limiting parts 12, and the first limiting surface and the second limiting surface are in contact. In the printing operation, the position of the printing panel 22 along the second direction Y is limited by the first limiting part 12 of the host bracket 10, so as to avoid the offset of the printing panel 22 and affect the printing quality.

[0061] In some embodiments, the printhead 20 comprises one or more elastic members 23. Optionally, the elastic member 23 can be a spring. The printing back plate 21 and the printing panel 22 are both provided with a sleeve part for sleeving the spring, so that the two ends of the spring are connected to the printing back plate 21 and the printing panel 22, respectively.

[0062] In the embodiments of the present application, the printing device 1 further comprises a cover 50 rotatably mounted on the machine body 40. For example, the cover 50 and the machine body 40 are rotatably connected through a hinge, a slide rail, a rotating shaft or the like. The printing roller 30 is mounted on the cover 50. With the opening and closing of the cover 50, the printing roller 30 moves correspondingly. In the closed state of the cover 50 on the machine body 40, the printing roller 30 cooperates with the printing panel 22 of the printhead 20 to form a paper feeding channel.

[0063] In the drawings of the embodiments of the present application, the same or similar reference signs correspond to the same or similar parts; in the description of the present application, it should be understood that the orientation or position relationship indicated by the terms “upper”, “lower”, “left”, “right” and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0064] The above description is only the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A printing device, characterized in that, include: A print head includes a print back plate, a print front plate, and an elastic element; in a first direction, the print back plate and the print front plate are arranged side by side and spaced apart, and the elastic element is connected to the print back plate and the print front plate respectively; and Main unit bracket, the printing backplate is mounted on the main unit bracket; The main support bracket has a plurality of mounting slots spaced apart in a second direction, the mounting slots being open toward one side of the elastic member, each mounting slot including a first groove body, and the second direction being perpendicular to the first direction; At least one of the mounting slots includes a second slot body communicating with the first slot body. The second slot body extends along a third direction and penetrates the host bracket. The third direction is perpendicular to both the first direction and the second direction. The printing panel enters the mounting slot under the guidance of the second slot body and is pushed to the side wall of the first slot body away from the second slot body under the action of the elastic member, and abuts against the side wall. In the abutting state, the elastic member is always in a compressed state.

2. The printing device according to claim 1, characterized in that, One type of mounting slot having the second groove body is a first mounting slot, wherein, in the second direction, the second groove body of the first mounting slot extends bidirectionally to communicate with the space between adjacent mounting slots; and / or, One type of mounting slot having the second groove body is a second mounting slot, wherein in the second direction, the second groove body of the second mounting slot extends unidirectionally to communicate with the space between the adjacent mounting slots.

3. The printing device according to claim 1, characterized in that, The printing device includes a bottom casing and a top casing, wherein the top casing is detachably mounted on the bottom casing. The main unit bracket includes multiple mounting side plates, and each mounting side plate has a mounting groove. The mounting side plate has a first side wall facing the fuselage cover, and the second groove extends from the first groove to the first side wall.

4. The printing device according to claim 1, characterized in that, The extension direction of the first groove is set at an angle to the extension direction of the second groove.

5. The printing device according to claim 1, characterized in that, The first groove extends along the first direction, and the second groove is directly connected to the first groove; or, The mounting groove having the second groove also includes a third groove, the first groove and the second groove are located on the same side of the third groove, and the second groove is connected to the first groove through the third groove.

6. The printing device according to claim 1, characterized in that, The first groove includes a first region and a second region. In the first direction, the distance from the first region to the printing backplate is less than the distance from the second region to the printing backplate. The second groove is connected to the first region.

7. The printing device according to claim 6, characterized in that, The printing panel has a plug-in portion disposed in the first groove, and the surface of the plug-in portion is pushed against the wall of the second region under the action of the elastic member, and the plug-in portion is spaced apart from the second groove.

8. The printing device according to claim 1, characterized in that, The first groove extends along the first direction, and the length of the first groove is S, where S satisfies: 3mm≤S≤15mm.

9. The printing device according to claim 1, characterized in that, The printing backplate includes a backplate body and multiple backplate mating parts. The multiple backplate mating parts are spaced apart along the second direction and connected to the backplate body. The backplate mating parts are rotatably mounted on the host bracket, and the elastic members are respectively connected to the backplate body and the printing panel, so that the printing backplate can rotate around the host bracket, thereby driving the printing panel to move.

10. The printing apparatus according to claim 9, characterized in that, The main support bracket includes two first limiting portions arranged at intervals along the second direction, and the two first limiting portions have first limiting surfaces facing each other; The printing panel also includes two second limiting portions, each having a second limiting surface facing away from the other. Along the second direction, two second limiting portions are disposed between two first limiting portions, and the first limiting surface is in contact with the second limiting surface to limit the position of the printing panel along the second direction.

11. The printing device according to claim 3, characterized in that, The host rack includes multiple mounting side plates, and the mounting side plates include: The motherboard body has the first slot; and An auxiliary protrusion is connected to the main body, and the auxiliary protrusion has the first side wall surface. A portion of the second groove is disposed on the main body and communicates with the first groove, and another portion is disposed on the auxiliary protrusion and extends to the first side wall surface.

12. The printing apparatus according to claim 11, characterized in that, The mounting side plate also includes a reinforcing part. Along the second direction, the reinforcing part is disposed on one side of the main body and connected to the main body, and the reinforcing part is arranged around the periphery of the first groove.

13. The printing device according to claim 1, characterized in that, The second groove has a first port communicating with the first groove, and the second groove has a second port opened on the surface of the host bracket. In the direction perpendicular to the second direction, the size of the first port is L1, and the size of the second port is L2, wherein L1 and L2 satisfy: L1≤L2.

14. The printing apparatus according to claim 13, characterized in that, The printing panel has a connector for insertion into the first slot, the size of which is d; Where d and L1 satisfy: 0mm≤L1-d≤0.1mm.

15. The printing apparatus according to claim 13, characterized in that, The printing panel has a connector for insertion into the first slot, the size of which is d; Where d and L2 satisfy: 0.3mm≤L2-d≤1.5mm.

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