Thermal printing head mounting structure and printer
Through the improved thermal printhead installation structure, components such as fixing rods, hanging plates and elastic components are used to solve the problems of disassembly difficulties and assembly clearance, and achieve rapid replacement and high-precision printing.
Patent Information
- Application Number
- CN202422549408.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The existing thermal printhead installation structure is difficult to disassemble, the assembly gap leads to low printing accuracy, and complex processing and assembly requirements.
The design of components such as fixed rods, hanging pieces, sleeves, slide rods and mounting seats is adopted to achieve rapid disassembly and installation through elastic components and limiting structures, reduce assembly clearance and improve the operating space and accuracy of the print head.
It realizes rapid replacement of print heads, reduces parts processing and assembly requirements, and improves printing accuracy and working efficiency.
Smart Images
Figure CN223085681U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of printing equipment, in particular to a thermal print head mounting structure and a printer. Background Technique
[0002] At present, most of the installations of thermal print heads in printing machines on the market adopt screw fixation and snap - in methods. When replacing the thermal print head, it is difficult to disassemble, the internal space is small, the operation is very inconvenient, and it is also difficult to quickly find the printing rubber roller surface and the printing axis after replacement.
[0003] Because the snap - in has an assembly gap, during printing, the print head also has slight movement, resulting in a printing gap, which affects the printing accuracy. If the printing accuracy is to be guaranteed, the processing accuracy and assembly requirements of parts are very high, and the process is too complex. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a print head mounting structure and a printer that can be quickly disassembled and can reduce the assembly gap.
[0005] The technical solution of the utility model to solve the above - mentioned technical problem is as follows: A thermal print head mounting structure includes a fixed rod and a hanging piece fixedly installed in a printer. A hanging hole is provided on the hanging piece. A sleeve is rotatably installed on the fixed rod. A sliding rod is fixedly provided on the outer peripheral wall of the sleeve. The axis of the sliding rod is perpendicular to the fixed rod. An installation seat is slidably sleeved on the sliding rod. A hanging rod is fixedly provided on the side of the installation seat away from the sleeve. One end of the hanging rod extends into the hanging hole.
[0006] A first elastic element is also sleeved on the sliding rod. One end of the first elastic element abuts against the outer peripheral wall of the sleeve, and the other end abuts against the installation seat. A bottom plate is fixedly provided at the bottom of the installation seat, and a print head is installed on the bottom plate.
[0007] The beneficial effect of the utility model is that when the print head needs to be disassembled, push the installation seat and pull out the hanging rod from the hanging hole. The bottom plate rotates around the fixed rod to the other side, expanding the operation space, and the print head can be quickly replaced. The structure is simple, and the requirements for part processing accuracy and assembly are reduced.
[0008] On the basis of the above - mentioned technical solution, the utility model can be further improved as follows.
[0009] Further, a fixed plate is fixedly provided in the printer, the fixed plate is located above the fixed rod, and the hanging piece is fixedly installed on the side wall of the fixed plate.
[0010] The beneficial effect of adopting the above - mentioned further solution is that the hanging piece restricts the movement of the installation seat and the bottom plate.
[0011] Further, the hanging hole is an oblong hole and the length direction thereof is perpendicular to the axis of the fixed rod.
[0012] The beneficial effect of adopting the above further solution is that: the oblong hole design of the hanging hole enables the mounting seat and the bottom plate to have a certain up-and-down movement space.
[0013] Further, a plurality of elastic adjusting parts are arranged on the fixed plate, and the adjusting ends of the elastic adjusting parts are abutted against the top surface of the bottom plate.
[0014] The beneficial effect of adopting the above further solution is that: the elastic adjusting parts abut against the bottom plate downward to reduce the shaking of the print head and the bottom plate.
[0015] Further, the elastic adjusting part includes a fixed sleeve, the fixed sleeve is fixedly installed on the bottom surface of the fixed plate, a ejector rod is slidably arranged in the fixed sleeve, the bottom end of the ejector rod extends out of the fixed sleeve and is fixedly connected with a top block, and the top block is abutted against the top surface of the bottom plate;
[0016] A second elastic element is sleeved on the ejector rod, one end of the second elastic element is abutted against the end face of the fixed sleeve, and the other end is abutted against the top surface of the top block.
[0017] The beneficial effect of adopting the above further solution is that: when the print head contacts the printing rubber roller below, the reaction force pushes the bottom plate to rise, and the second elastic element provides an elastic force to push the ejector rod to abut against the bottom plate downward to eliminate the gap generated by assembly.
[0018] Further, the number of the elastic adjusting parts is two or more groups.
[0019] The beneficial effect of adopting the above further solution is that: ensure the balanced force of the print head and improve the printing quality.
[0020] Further, a printing rubber roller centering groove is further opened at the bottom of the bottom plate.
[0021] The beneficial effect of adopting the above further solution is that: the rubber roller surface and the axis of the printing rubber roller can be quickly aligned.
[0022] Further, a spherical plain bearing is arranged between the fixed rod and the sleeve.
[0023] The beneficial effect of adopting the above further solution is that: while enabling the sleeve to rotate around the fixed rod, it can also swing within a certain range, increasing the adjustment range.
[0024] Further, a self-lubricating bronze bushing is arranged between the sliding rod and the mounting seat.
[0025] The beneficial effect of adopting the above further solution is that: it is convenient for installation and ensures the sliding effect.
[0026] Another technical solution of the present utility model to solve the above technical problems: A printer, including the above-mentioned thermal print head mounting structure.
[0027] The beneficial effects of adopting the above further solution are: facilitating the installation and disassembly of the print head, reducing the processing requirements and assembly difficulty, and improving the work efficiency. Description of the Drawings
[0028] Figure 1 It is a schematic diagram of the hanging piece of the present utility model.
[0029] Figure 2 It is a schematic diagram of the print head of the present utility model.
[0030] Figure 3 It is a schematic diagram of the mounting seat of the present utility model.
[0031] Figure 4 It is a schematic diagram of the elastic adjustment part of the present utility model.
[0032] Figure 5 It is a schematic diagram of the side plate of the present utility model.
[0033] In the drawings, the list of components represented by each reference numeral is as follows:
[0034] 1. Fixed rod; 2. Hanging piece; 3. Hanging hole; 4. Sleeve; 5. Slide rod; 6. Mounting seat; 7. Hanging rod; 8. First elastic element; 9. Print head; 10. Fixed plate; 11. Fixed sleeve; 12. Thrust rod; 13. Thrust block; 14. Second elastic element; 15. Print rubber roller centering groove; 16. Bottom plate; 17. Limit ring; 18. Side plate; 19. Rotating shaft. Detailed Embodiments
[0035] The principles and features of the present utility model will be described below with reference to the drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.
[0036] Embodiment 1
[0037] As Figures 1 to 5 shown, a thermal print head mounting structure includes a fixed rod 1 and a hanging piece 2 fixedly installed in the printer. A hanging hole 3 is formed in the hanging piece 2. A sleeve 4 is rotatably installed on the fixed rod 1. A slide rod 5 is fixedly provided on the outer peripheral wall of the sleeve 4. The axis of the slide rod 5 is perpendicular to the fixed rod 1. A mounting seat 6 is slidably sleeved on the slide rod 5. A hanging rod 7 is fixedly provided on the side of the mounting seat 6 away from the sleeve 4. One end of the hanging rod 7 extends into the hanging hole 3;
[0038] A first elastic element 8 is also sleeved on the sliding rod 5. One end of the first elastic element 8 abuts against the outer peripheral wall of the sleeve 4, and the other end abuts against the mounting seat 6. A bottom plate 16 is fixedly provided at the bottom of the mounting seat 6, and a print head 9 is mounted on the bottom plate 16.
[0039] The beneficial effect of this embodiment is that when the print head 9 needs to be disassembled, the mounting seat 6 is pushed and the hanging rod 7 is pulled out of the hanging hole 3. The bottom plate 16 rotates around the fixed rod 1 to the other side, expanding the operation space, and the print head 9 can be quickly replaced. The structure is simple, and the requirements for part processing accuracy and assembly requirements are reduced.
[0040] Specifically, there are two oppositely arranged side plates 18 in the printer. The two side plates 18 can rotate around the rotating shaft 19, and the fixed rod 1 is fixed between the two side plates 18;
[0041] In the initial state, the sleeve 4 is sleeved on the fixed rod 1, the mounting seat 6 is sleeved on the sliding rod 5, the first elastic element 8 pushes the mounting seat 6 to move towards the side away from the sleeve 4, and the other side of the mounting seat 6 is fixed on the hanging piece 2 through the hanging rod 7, realizing the fixed installation of the mounting seat 6 and the bottom plate 16. When the side plate 18 rotates downward, it drives the print head 9 to contact the lower printing rubber roller for printing;
[0042] When the print head 9 needs to be disassembled, the mounting seat 6 is pushed towards the sleeve 4, the first elastic element 8 is compressed, and the mounting seat 6 drives the hanging rod 7 to withdraw from the hanging hole 3. At this time, the sleeve 4 can rotate normally around the fixed rod 1, and the bottom plate 16 rotates to the side away from the hanging piece 2 for the disassembly work of the print head 9;
[0043] After the print head 9 is reinstalled, it rotates and resets around the fixed rod 1, and the hanging rod 7 is inserted into the hanging hole 3 again, reducing the assembly error and quickly finding the original printing position.
[0044] On the basis of this embodiment, a limit ring 17 is fixedly provided at the end of the sliding rod 5 away from the sleeve 4 to prevent the mounting seat 6 from falling off the sliding rod 5 under the push of the first elastic element 8.
[0045] Embodiment 2
[0046] As Figures 1 to 5 shown, preferably, on the basis of Embodiment 1, a fixing plate 10 is fixedly provided in the printer. The fixing plate 10 is located above the fixed rod 1, and the hanging piece 2 is fixedly installed on the side wall of the fixing plate 10.
[0047] The beneficial effect of adopting the preferred solution in the above embodiment is that the hanging piece 2 restricts the movement of the mounting seat 6 and the bottom plate 16.
[0048] In this embodiment, the fixing plate 10 is also fixed between the two side plates 18 and swings together with the two side plates 18.
[0049] Example 3
[0050] As Figures 1 to 5 shown, preferably, on the basis of Embodiments 1-2, the hanging hole 3 is an oblong hole and the length direction is perpendicular to the axis of the fixing rod 1.
[0051] The beneficial effect of adopting the preferred solution in the above embodiment is that the oblong hole design of the hanging hole 3 enables the mounting seat 6 and the bottom plate 16 to have a certain up and down movement space.
[0052] Preferably, a plurality of elastic adjusting parts are arranged on the fixing plate 10, and the adjusting end of the elastic adjusting part abuts against the top surface of the bottom plate 16.
[0053] The beneficial effect of adopting the preferred solution in the above embodiment is that the elastic adjusting part presses down against the bottom plate 16 to reduce the shaking of the print head 9 and the bottom plate 16.
[0054] Preferably, the elastic adjusting part includes a fixing sleeve 11, the fixing sleeve 11 is fixedly installed on the bottom surface of the fixing plate 10, a top rod 12 is slidably arranged in the fixing sleeve 11, the bottom end of the top rod 12 extends out of the fixing sleeve 11 and is fixedly connected with a top block 13, and the top block 13 abuts against the top surface of the bottom plate 16;
[0055] A second elastic element 14 is sleeved on the top rod 12, one end of the second elastic element 14 abuts against the end surface of the fixing sleeve 11, and the other end abuts against the top surface of the top block 13.
[0056] The beneficial effect of adopting the preferred solution in the above embodiment is that when the print head 9 contacts the lower printing rubber roller, the reaction force pushes the bottom plate 16 to rise, the second elastic element 14 provides a downward elastic force, and pushes the top rod 12 to press down against the bottom plate 16 to eliminate the gap generated by assembly.
[0057] Specifically, in this embodiment, the oblong hole of the hanging hole 3 is used in cooperation with the elastic adjusting part. The top end of the top rod 12 extends out from the top of the fixing sleeve 11 and is fixedly connected with a limiting ring platform to prevent the top rod 12 from sliding out of the bottom of the fixing sleeve 11 under the action of the second elastic element 14;
[0058] In the non-printing state, the second elastic element 14 provides an elastic force to push the top rod 12 to extend out. The top rod 12 presses down against the bottom plate 16, and the hanging rod 7 is located in the hanging hole 3 and is abutted against the lower limit position of the hanging hole 3;
[0059] When the print head 9 contacts the lower printing rubber roller, the reaction force pushes the print head 9, the print head 9 drives the bottom plate 16, the bottom plate 16 pushes the top rod 12 to rise, compresses the second elastic element 14, and the elastic force of the second elastic element 14 presses down against the bottom plate 16 to eliminate the gap generated by assembly.
[0060] In addition, when the print head 9 contacts the lower printing rubber roller, the greater the reaction force, the greater the downward pressure that the second elastic element 14 can provide.
[0061] Embodiment 4
[0062] As Figures 1 to 5 shown, preferably, on the basis of Embodiments 1-3, the number of the elastic adjusting parts is more than two groups.
[0063] The beneficial effect of adopting the preferred scheme in the above embodiment is: ensuring the balanced force of the print head 9 and improving the printing quality.
[0064] Specifically, in this embodiment, the number of the elastic adjusting parts is four groups.
[0065] Embodiment 5
[0066] As Figures 1 to 5 shown, preferably, on the basis of Embodiments 1-4, a printing rubber roller centering groove 15 is further formed at the bottom of the bottom plate 16.
[0067] The beneficial effect of adopting the preferred scheme in the above embodiment is: the rubber roller surface and axis of the printing rubber roller can be quickly aligned.
[0068] Specifically, the two side plates 18 can rotate around the rotating shaft 19. When moving upward, the printing rubber roller centering groove 15 is separated from the printing rubber roller. When moving downward, the printing rubber roller falls into the printing rubber roller centering groove 15.
[0069] Embodiment 6
[0070] As Figures 1 to 5 shown, preferably, on the basis of Embodiments 1-5, a spherical plain bearing is arranged between the fixed rod 1 and the sleeve 4.
[0071] The beneficial effect of adopting the preferred scheme in the above embodiment is: while enabling the sleeve 4 to rotate around the fixed rod 1, it can also swing within a certain range, increasing the adjustment range.
[0072] Specifically, the spherical plain bearing can also be called a universal bearing. It is a spherical sliding bearing, and its sliding contact surfaces are an inner spherical surface and an outer spherical surface, and it can rotate and swing at any angle during movement.
[0073] Embodiment 7
[0074] As Figures 1 to 5 shown, preferably, on the basis of Embodiments 1-6, a self-lubricating bronze bushing is arranged between the sliding rod 5 and the mounting seat 6.
[0075] The beneficial effect of adopting the preferred scheme in the above embodiment is: convenient installation and ensuring the sliding effect.
[0076] Example 8
[0077] A printer comprises the above-mentioned thermal print head installation structure.
[0078] The beneficial effects of adopting the preferred solution in the above embodiment are: facilitating installation and removal of the print head 9, reducing processing requirements and assembly difficulty, and improving work efficiency.
[0079] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0080] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0081] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0082] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0083] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0084] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.
Claims
1. A thermal print head mounting structure, characterized in that, It includes a fixed rod (1) and a hanging piece (2) fixedly installed in the printer. A hanging hole (3) is formed in the hanging piece (2). A sleeve (4) is rotatably installed on the fixed rod (1). A sliding rod (5) is fixedly provided on the outer peripheral wall of the sleeve (4). The axis of the sliding rod (5) is perpendicular to the fixed rod (1). An installation seat (6) is slidably sleeved on the sliding rod (5). A hanging rod (7) is fixedly provided on one side of the installation seat (6) away from the sleeve (4). One end of the hanging rod (7) extends into the hanging hole (3). A first elastic element (8) is also sleeved on the sliding rod (5). One end of the first elastic element (8) abuts against the outer peripheral wall of the sleeve (4), and the other end abuts against the installation seat (6). A bottom plate (16) is fixedly provided at the bottom of the installation seat (6). A print head (9) is installed on the bottom plate (16).
2. The thermal print head mounting structure according to claim 1, wherein A fixed plate (10) is fixedly provided in the printer. The fixed plate (10) is located above the fixed rod (1). The hanging piece (2) is fixedly installed on the side wall of the fixed plate (10).
3. The installation structure of a thermal print head according to claim 2, characterized in that, The hanging hole (3) is an oblong hole and the length direction is perpendicular to the axis of the fixed rod (1).
4. The installation structure of a thermal print head according to claim 3, characterized in that, A plurality of elastic adjustment parts are provided on the fixed plate (10). The adjustment end of the elastic adjustment part abuts against the top surface of the bottom plate (16).
5. The installation structure of a thermal print head according to claim 4, characterized in that, The elastic adjustment part includes a fixed sleeve (11). The fixed sleeve (11) is fixedly installed on the bottom surface of the fixed plate (10). A top rod (12) is slidably arranged in the fixed sleeve (11). The bottom end of the top rod (12) extends out of the fixed sleeve (11) and is fixedly connected with a top block (13). The top block (13) abuts against the top surface of the bottom plate (16). A second elastic element (14) is sleeved on the top rod (12). One end of the second elastic element (14) abuts against the end surface of the fixed sleeve (11), and the other end abuts against the top surface of the top block (13).
6. The installation structure of a thermal print head according to claim 4, wherein, The number of the elastic adjustment parts is more than two groups.
7. The installation structure of a thermal print head according to claim 1, wherein, A print rubber roller centering groove (15) is also formed at the bottom of the bottom plate (16).
8. The thermal print head mounting structure according to any one of claims 1 to 7, characterized in that, A spherical plain bearing is arranged between the fixed rod (1) and the sleeve (4).
9. The installation structure of a thermal print head according to any one of claims 1 to 7, characterized in that, A self-lubricating bronze bushing is arranged between the sliding rod (5) and the installation seat (6).
10. A printer, characterized in that, It includes the thermal print head installation structure according to any one of claims 1-9.