Print head pressure adjusting mechanism

Abstract

The utility model provides a printing head pressure adjusting mechanism. A pressure adjusting part comprises a sliding seat, a fixing part and a pressure assembly. The sliding seat is sleeved on the pressure shaft and can axially slide along the pressure shaft, and the sliding seat is provided with a through groove vertical to the pressure shaft; the fixing part is arranged on the sliding seat and used for fixing the sliding seat on the pressure shaft, so that the distance between the two pressure adjusting parts can be adjusted and fixed, and the pressure point is reasonably adjusted according to the width of printing paper. The pressure assembly comprises a pressure head, an elastic piece and an adjusting piece which are sequentially arranged in the through groove. The end of the pressing head extends out of the end, facing the printing head assembly, of the sliding base and abuts against the printing assembly, the adjusting piece can move in the axial direction of the through groove, force of different magnitudes is applied to the elastic piece, and therefore the elastic piece generates different deformation quantities to transmit different pushing force to the pressing head, and then the pushing force is converted into different pressing force to the printing assembly.

Description

Technical Field

[0001] The utility model relates to the field of printers, in particular to a printing head pressure regulating mechanism. Background Art

[0002] Thermal transfer printer, also known as barcode printer, is a special printer. It usually prints the company's brand logo, serial number logo, packaging logo, barcode logo, envelope label, clothing tag, etc. The most important part of a barcode printer is the print head. The print head position of existing barcode printers cannot be moved. When the barcode printer prints barcode stickers of different paper sizes, thicknesses and materials, it will cause problems such as print position offset or blurred printing. Therefore, it is necessary to adjust the pressing force of the print head appropriately according to the actual situation. Utility Model Content

[0003] The utility model aims to provide a printing head pressure regulating mechanism.

[0004] The utility model aims to solve the problem of regulating the pressure of a print head.

[0005] In order to solve the above problems, the utility model is implemented through the following technical solutions:

[0006] A print head pressure adjustment mechanism, comprising a middle plate, a side cover corresponding to the middle plate, a pressure shaft connected between the middle plate and the side cover, and a pressure adjustment member arranged on the pressure shaft, through which pressure is transmitted to the print head assembly, the pressure adjustment member comprising: a sliding seat, the sliding seat is sleeved on the pressure shaft and can slide axially along the pressure shaft; the sliding seat is provided with a through groove perpendicular to the pressure shaft; a fixing member, the fixing member is arranged on the sliding seat, and is used to fix the sliding seat on the pressure shaft; a pressure assembly, the pressure assembly comprising a pressure head, an elastic member and an adjustment member sequentially built into the through groove; the end of the pressure head extends from the sliding seat toward one end of the print head assembly, and the adjustment member can move axially along the through groove; wherein a clearance hole for the adjustment member to pass through is provided on the pressure shaft

[0007] Furthermore, the inner wall of the through groove has an internal thread, and the adjusting member is provided with an external thread matched with the internal thread.

[0008] Furthermore, a nut is embedded in the inner wall of the through groove, and the adjusting member is threadedly connected to the nut.

[0009] Furthermore, the end of the adjusting member facing away from the elastic member is provided with a hexagonal groove and / or a slotted groove, and / or the outer periphery of one end of the adjusting member away from the elastic member is provided with a plurality of anti-slip ridges, and the anti-slip ridges are arranged along the axial direction of the adjusting member.

[0010] Furthermore, a limiting flange is arranged on the inner wall of one end of the through slot close to the print head assembly toward its axis, and a clamping portion is arranged on the periphery of one end of the pressure head close to the elastic member, and the outer diameter of the clamping portion is greater than the inner diameter of the limiting flange.

[0011] Furthermore, the relief hole is opened along the axial direction of the pressure shaft.

[0012] Furthermore, a fixing hole is provided on a side of the sliding seat corresponding to the pressure shaft, the fixing member is threadedly connected to the fixing hole, and the fixing member passes through the fixing hole to abut against the pressure shaft.

[0013] Furthermore, the head of the fixing piece is provided with a hexagonal groove and / or a slotted groove, and / or the outer periphery of one end of the fixing piece away from the pressure shaft is provided with a plurality of anti-slip ridges, and the anti-slip ridges are arranged along the axial direction of the fixing piece.

[0014] Furthermore, the pressure assembly also includes a pressing sheet arranged between the adjusting member and the elastic member.

[0015] Furthermore, the pressure head is made of wear-resistant material.

[0016] Compared with the prior art, the technical solution of the utility model and its beneficial effects are as follows:

[0017] (1) The utility model can adjust the point of application of the clamping force on the printing component by adjusting the position of the sliding seat on the pressure shaft; the size of the clamping force on the printing component can be adjusted by moving the adjusting member along the axial direction of the sliding seat in the through groove 411, thereby being able to adjust the clamping force on the printing component to an optimal level in multiple dimensions.

[0018] (2) The adjusting member and the fixing member of the utility model are both provided with a hexagonal groove and a slotted groove at the end, and a protective ridge is provided on the outer periphery of the head, so as to adapt to the adjustment by a variety of adjustment tools, such as manual adjustment, a hexagonal wrench, a slotted screwdriver and even a coin and other objects that are adapted to the width of the slot, thereby making the adjustment more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of a print head pressure adjustment mechanism provided by an embodiment of the utility model;

[0020] Figure 2 yes Figure 1 Section view in the AA direction;

[0021] Figure 3 This is a cross-sectional view of the assembly of the sliding seat and the pressure shaft provided by the embodiment of the utility model;

[0022] Figure 4 This is a stereoscopic diagram of the assembly of the pressure regulating member and the pressure shaft provided by the embodiment of the utility model;

[0023] Figure 5 It is a top view of the assembly of the pressure regulating member and the pressure shaft provided by an embodiment of the utility model.

[0024] Illustration Description:

[0025] Middle plate-1; side cover-2; pressure shaft-3; clearance hole-31; pressure adjustment member-4; print head assembly-5;

[0026] Sliding seat-41; through groove-411; internal thread-412; fixing hole-413; limiting flange-414; nut-415;

[0027] Fixings - 42;

[0028] Adjusting member 43; hexagon socket 431; slot 432; anti-skid ridge 433; elastic member 44; pressure head 45; clamping part 451; pressing piece 46. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] See also Figure 1 A print head pressure adjustment mechanism includes a middle plate 1, a side cover 2 corresponding to the middle plate 1, a pressure shaft 3 connected between the middle plate 1 and the side cover 2, and a pressure adjustment member 4 arranged on the pressure shaft 3. The pressure is transmitted to the print head assembly 5 through the pressure adjustment member 4, and the pressure generated by the print head assembly on the printing paper is adjusted through the pressure adjustment member 4.

[0031] See also Figures 2 to 5 The pressure adjusting member includes a sliding seat 41, a fixing member 42 and a pressure assembly. The sliding seat 3 is sleeved on the pressure shaft 3 and can slide along the axial direction of the pressure shaft 3. The sliding seat 41 is vertically provided with a through slot 411 on the pressure shaft 3; the fixing member 42 is arranged on the sliding seat 41, and is used to fix the sliding seat 41 on the pressure shaft 3, so that the distance between the two pressure adjusting members can be adjusted and fixed, and then the pressure point can be reasonably adjusted according to the width of the printing paper.

[0032] The pressure assembly includes a pressure head 45, an elastic member 44 and an adjusting member 43 which are sequentially built into the through slot 411. The end of the pressure head 45 extends from the sliding seat 41 toward one end of the print head assembly 5 and presses the print assembly 5. The adjusting member 43 can move along the axial direction of the through slot 411 to apply different forces to the elastic member 44, so that the elastic member 44 generates different deformation amounts and transmits different thrusts to the pressure head 45, which is then converted into different pressing forces on the print assembly 5. It is understandable that the pressure head 45 will not fall from the through slot 411. Specifically, the inner wall of the through slot 411 near the end of the print head assembly 5 is provided with a limit flange 414 toward its axis, and the periphery of the end of the pressure head 45 near the elastic member 44 is provided with a clamping portion 451, and the outer diameter of the clamping portion 451 is greater than the inner diameter of the limit flange 414, so that the clamping portion 451 is limited in the through slot 411 by the limit flange 414, thereby ensuring that the pressure will not fall from the end of the through slot 411. In this embodiment, the pressure assembly further includes a pressing sheet 46 disposed between the adjusting member 43 and the elastic member 44, so that the pressure of the adjusting member 43 acts on the elastic member 44 more evenly.

[0033] In this embodiment, the pressure head 45 is made of wear-resistant material. When the printer is in working state, there is always elastic pressure between the pressure component and the print head component 5 to avoid rigid abutment, thereby absorbing the assembly size tolerance and reducing the wear of the pressure head 45.

[0034] In this embodiment, the inner wall of the through slot 411 has an internal thread 412, and the adjusting member 43 is provided with an external thread adapted to the internal thread 412, so that the adjusting member 43 is threadedly connected to the through slot 411, and then the adjusting member 43 can be rotated to make the adjusting member 43 screw in or out relative to the through slot 411, thereby pressing the elastic member 44 or loosening the elastic member 44. It can be understood that the internal thread 412 can be directly provided on the inner wall of the through slot 411, or a nut 415 can be embedded in the inner wall of the through slot 411, and the adjusting member 43 is threadedly connected to the nut 415.

[0035] The end of the adjusting member 43 away from the elastic member 44 is provided with a hexagonal groove 431 or a slot 432, or the hexagonal groove 431 and the slot 432 are provided at the same time. Figure 5 , so that the adjusting member 43 can be adapted to more tools, increasing the convenience of adjustment. It can also be manually adjusted, and a plurality of anti-skid protrusions 433 are arranged on the outer periphery of the end of the adjusting member 43 away from the elastic member 44, and the anti-skid protrusions 433 are arranged along the axial direction of the adjusting member 43 to increase the friction force with the adjusting member 43 during manual rotation.

[0036] The clearance hole 31 is opened along the axial direction of the pressure shaft 3, and the adjusting member 43 passes through the end of the sliding seat 43 and enters the through groove 411 and passes through the clearance hole 31 and is connected with the internal thread 412, that is, the adjusting member 43 can only move within the range of the clearance hole 31, and the moving range of the sliding seat 43 on the pressure shaft 3 is the width of the clearance hole 31 in the axial direction of the pressure shaft 3. The side of the sliding seat 41 corresponding to the pressure shaft 3 is provided with a fixing hole 413, and the fixing member 42 is threadedly connected with the fixing hole 413. The fastener 42 passes through the fixing hole 413 and abuts against the pressure shaft 3. The friction between the end of the fastener 42 and the pressure shaft 3 fixes the sliding seat 41 on the pressure shaft 3. The fastener 42 is screwed out relative to the fixing hole 413, that is, the sliding seat 41 is moved within the range of the clearance hole 31, that is, the pressure adjusting member 4 is moved. It is understandable that the thread of the fixing hole 413 can be directly opened in the fixing hole, that is, directly opened on the sliding seat 41, or a nut can be fixedly installed in the fixing hole 413, and the fixing member 42 is fixedly connected with the nut by threading. The design principle is the same as that of the adjusting member 43. The head of the fixing member 42 is also provided with a hexagonal groove and a slotted groove, and the outer periphery of the head is provided with anti-slip ridges for easy manual adjustment.

[0037] In the present invention, the point of application of the pressing force on the printing assembly 5 can be adjusted by adjusting the position of the sliding seat 41 on the pressure shaft 3; the magnitude of the pressing force on the printing assembly 5 can be adjusted by moving the adjusting member 43 in the through groove 411 along the axial direction of the sliding seat 41, thereby adjusting the pressing force on the printing assembly 5 to a better value in multiple dimensions. Of course, a clearance hole 31 is provided on the pressure shaft 3 for the adjusting member 43 to pass through.

[0038] The above description shows and describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept of this article through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A print head pressure regulating mechanism, comprising a middle plate, a side cover corresponding to the middle plate, a pressure shaft connected between the middle plate and the side cover, and a pressure regulating member arranged on the pressure shaft, wherein the pressure is transmitted to the print head assembly through the pressure regulating member, characterized in that: The pressure regulating member comprises: A sliding seat, the sliding seat is sleeved on the pressure shaft and can slide along the axial direction of the pressure shaft; the sliding seat is provided with a through groove perpendicular to the pressure shaft; A fixing member, the fixing member is arranged on the sliding seat and is used to fix the sliding seat on the pressure shaft; A pressure assembly, the pressure assembly comprising a pressure head, an elastic member and an adjusting member sequentially built into the through slot; an end of the pressure head extends from the sliding seat toward one end of the print head assembly, and the adjusting member can move along the axial direction of the through slot; Wherein, the pressure shaft is provided with a clearance hole for the adjusting member to pass through.

2. A print head pressure adjustment mechanism according to claim 1, characterized in that: The inner wall of the through groove is provided with an internal thread, and the adjusting member is provided with an external thread matching the internal thread.

3. A print head pressure adjustment mechanism according to claim 1, characterized in that: A nut is embedded in the inner wall of the through slot, and the adjusting member is threadedly connected to the nut.

4. A print head pressure adjustment mechanism according to claim 2 or 3, characterized in that: The end of the adjusting member away from the elastic member is provided with a hexagonal groove and / or a slotted groove, and / or the outer periphery of one end of the adjusting member away from the elastic member is provided with a plurality of anti-slip ridges, and the anti-slip ridges are arranged along the axial direction of the adjusting member.

5. A print head pressure adjustment mechanism according to claim 1, characterized in that: The inner wall of the through slot near the print head assembly is provided with a limiting flange toward its axis, and the periphery of the pressure head near the elastic member is provided with a clamping portion, the outer diameter of the clamping portion is greater than the inner diameter of the limiting flange.

6. A print head pressure adjustment mechanism according to claim 1, characterized in that: The relief hole is opened along the axial direction of the pressure shaft.

7. A print head pressure adjustment mechanism according to claim 6, characterized in that: A fixing hole is provided on the side of the sliding seat corresponding to the pressure shaft, the fixing piece is threadedly connected to the fixing hole, and the fixing piece passes through the fixing hole to abut against the pressure shaft.

8. A print head pressure adjustment mechanism according to claim 7, characterized in that: The head of the fixing member is provided with a hexagonal groove and / or a slotted groove, and / or the outer periphery of one end of the fixing member away from the pressure shaft is provided with a plurality of anti-skid ridges, and the anti-skid ridges are arranged along the axial direction of the fixing member.

9. A print head pressure adjustment mechanism according to claim 1, characterized in that: The pressure assembly also includes a pressing sheet arranged between the adjusting member and the elastic member.

10. A print head pressure adjustment mechanism according to claim 1, characterized in that: The pressure head is made of wear-resistant material.

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