CN211138637U - Bar code label printer thermal head hold-down mechanism - Google Patents

Abstract

The utility model discloses a bar code label printer thermal head pressing mechanism, which comprises a bracket, a thermal head support plate and a pressing mechanism, wherein the thermal head support plate and the pressing mechanism are arranged on the bracket, the pressing mechanism comprises a first support shaft, a second support shaft and a pressure adjusting component, the first support shaft and the second support shaft are rotationally arranged on the bracket, one end of the first support shaft is fixedly connected with a spanner, the two ends of the second support shaft are provided with rotation stopping mechanisms, the pressure adjusting component comprises a first connecting rod, the rear end of the first connecting rod is fixed on the first supporting shaft, the front end of the first connecting rod is hinged to the rear end of the second connecting rod, the rear end of the telescopic rod is hinged to the second supporting shaft, the sliding sleeve is sleeved on the telescopic rod in a sliding mode, the front end of the second connecting rod is hinged to the sliding sleeve, the compressing head is connected to the front end of the telescopic rod, and the two ends of the spring are connected with the sliding sleeve and the compressing head respectively. The utility model discloses hold-down mechanism's packing force is adjustable, and the convenient operation who adjusts.

Description

Bar code label printer thermal head hold-down mechanism

Technical Field

The utility model relates to a technical field is printed to the label, concretely relates to bar code label printer thermal head hold-down mechanism.

Background

When the bar code label printer is used for printing, the thermal head needs to be tightly pressed on the printing rubber roller so as to ensure that the thermal head can be reliably contacted with the carbon ribbon and ensure the printing quality.

Chinese utility model patent CN202412922U specification discloses a bar code label printer thermal head hold-down mechanism, and this structure accessible adjusting nut adjusts the elasticity of spring, and then realizes the regulation of packing force, ensures that hold-down mechanism reliably compresses tightly the thermal head, however, the space that adjusting nut adjusted is narrow and small, and twists adjusting nut and need operate very inconveniently with the help of the spanner.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a bar code label printer thermal head hold-down mechanism to make this hold-down mechanism's packing force adjustable, and the convenient operation who adjusts.

The utility model provides a bar code label printer thermal head hold-down mechanism, install relatively around and including the support thermal head backup pad and hold-down mechanism on the support, hold-down mechanism includes: the first support shaft is transversely arranged and rotatably mounted on the bracket, and one end of the first support shaft is fixedly connected with a wrench; the second support shaft is arranged in front of the first support shaft in parallel and is rotatably arranged on the bracket, and rotation stopping mechanisms are arranged at two ends of the second support shaft; and at least a set of pressure regulating assembly, pressure regulating assembly includes first connecting rod, second connecting rod, telescopic link, sliding sleeve, pressure head and spring, the rear end of first connecting rod is fixed in first support shaft, the front end of first connecting rod articulate in the rear end of second connecting rod, the rear end of telescopic link articulate in the second support shaft, the sliding sleeve slides and cup joints on the telescopic link, and the front end of second connecting rod articulates on the sliding sleeve, pressure head is connected at the front end of telescopic link and can be pressed in the temperature sensing head backup pad, the spring housing is established on the telescopic link, the both ends of spring link to each other with sliding sleeve and pressure head respectively.

Furthermore, a first pin hole is formed in the front section of the wrench, a plurality of second pin holes which can be aligned with the first pin hole respectively are formed in one side of the support at different heights, and the wrench and the support are locked through lock pins penetrating through the first pin hole and the second pin hole at any height.

Furthermore, the rotation stopping mechanism comprises a lower stop block and an upper stop block, the lower stop block is fixed on the support, the upper stop block is fixed on the second supporting shaft, and when the upper stop block abuts against the lower stop block, the second supporting shaft stops rotating.

Further, the pressure regulating assemblies are oppositely arranged in two groups from left to right.

Furthermore, the front end of the pressing head is hemispherical.

The beneficial effects of the utility model are embodied in: when the thermal head supporting plate needs to be compressed, the wrench is pulled downwards to drive the first supporting shaft and the first connecting rod to rotate downwards and link with the second supporting shaft, the second connecting rod and the telescopic rod to put down the pressure adjusting assembly until the rotation stopping mechanism locks the second supporting shaft, then the wrench is continuously pulled downwards to drive the first supporting shaft and the first connecting rod to continue to rotate downwards, the first connecting rod pushes the sliding sleeve to slide forwards through the second connecting rod, the telescopic rod extends to enable the pressing head to be pressed on the thermal head supporting plate, the wrench is continuously pulled downwards to increase the pressing force of the pressing head on the thermal head supporting plate, the wrench is locked after the pressing force is adjusted to be proper, and the wrench is pulled upwards to lift the pressure adjusting assembly when the pressing force needs to be removed. Therefore, the pressing mechanism can adjust the pressing force by wrenching the wrench, and the adjusting operation is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a top view of an embodiment of the present invention;

FIG. 2 is a right side view of FIG. 1;

fig. 3 is a schematic structural diagram of a pressure adjustment assembly according to an embodiment of the present invention.

In the drawings: 10 denotes a stent; 20 denotes a thermal head support plate; 30 denotes a pressing mechanism; 31 denotes a first support shaft; 311 denotes a wrench; 32 denotes a second support shaft; 321 denotes a rotation stop mechanism; 3211 denotes a lower stopper; 3212 denotes an upper stopper; 33, a pressure regulating assembly; 331 denotes a first link; 332 denotes a second link; 333 denotes a telescopic rod; 334 denotes a sliding sleeve; 335 a compression head; 336 denotes a spring; 41 denotes a first pin hole; 42 denotes a second pin hole; and 43 denotes a lock pin.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1-3, the present invention provides a thermal head pressing mechanism 30 of a barcode label printer, which comprises a support 10, and a thermal head supporting plate 20 and a pressing mechanism 30 which are installed on the support 10 in a front-back relative manner.

The pressing mechanism 30 includes a first support shaft 31, a second support shaft 32, and at least one set of pressure adjustment components 33, and two sets of pressure adjustment components 33 are oppositely arranged on the left and right sides of fig. 1.

Referring to fig. 1, a first supporting shaft 31 is transversely disposed and rotatably mounted on the bracket 10, and a wrench 311 is fixedly connected to one end of the first supporting shaft 31. The second support shaft 32 is disposed in parallel to the front of the first support shaft 31 and rotatably mounted on the bracket 10, and rotation stopping mechanisms 321 are disposed at two ends of the second support shaft 32. Specifically, in the present embodiment, the rotation stopping mechanism 321 includes a lower stopper 3211 and an upper stopper 3212, the lower stopper 3211 is fixed to the bracket 10, the upper stopper 3212 is fixed to the second support shaft 32, and when the upper stopper 3212 abuts against the lower stopper 3211, the second support shaft 32 stops rotating.

Referring to fig. 1 and 3, the pressure adjustment assembly 33 includes a first connecting rod 331, a second connecting rod 332, an expansion link 333, a sliding sleeve 334, a pressing head 335 and a spring 336, wherein a rear end of the first connecting rod 331 is fixed to the first supporting shaft 31, a front end of the first connecting rod 331 is hinged to a rear end of the second connecting rod 332, a rear end of the expansion link 333 is hinged to the second supporting shaft 32, the sliding sleeve 334 is slidably sleeved on the expansion link 333, a front end of the second connecting rod 332 is hinged to the sliding sleeve 334, the pressing head 335 is connected to a front end of the expansion link 333 and can be pressed on the thermal head supporting plate 20, a front end of the pressing head 335 is hemispherical, the pressing head 335 is in contact with the thermal head supporting plate 20 through a spherical surface, the spring 336 is sleeved on the expansion link 333, and two ends of the spring 336 are respectively connected.

Referring to fig. 2, a front section of the wrench 311 is provided with a first pin hole 41, one side of the bracket 10 is provided with a plurality of second pin holes 42 at different heights, which are respectively aligned with the first pin holes 41, and the wrench 311 is locked with the bracket 10 by a locking pin 43 penetrating through the first pin hole 41 and the second pin hole 42 at any height.

When the thermal head support plate 20 needs to be pressed, the wrench 311 is pulled downwards to drive the first support shaft 31 and the first connecting rod 331 to rotate downwards and to be linked with the second support shaft 32, the second connecting rod 332 and the telescopic rod 333 to lower the pressure adjusting assembly 33 until the rotation stopping mechanism 321 locks the second support shaft 32, then the wrench 311 is pulled downwards continuously to drive the first support shaft 31 and the first connecting rod 331 to rotate downwards continuously, the first connecting rod 331 pushes the sliding sleeve 334 to slide forwards through the second connecting rod 332, the telescopic rod 333 extends to enable the pressing head 335 to be pressed on the thermal head support plate 20, the wrench 311 is pulled downwards continuously to increase the pressing force of the pressing head 335 on the thermal head support plate 20, after the appropriate pressure is adjusted by the pressing force, the wrench 311 is locked, and when the pressing force needs to be released, the wrench 311 is pulled upwards to lift the pressure adjusting assembly 33. Therefore, the pressing mechanism 30 can adjust the pressing force by pulling the wrench 311, and the operation of adjustment is convenient.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (5)

1. A bar code label printer thermal head hold-down mechanism, includes a bracket, a thermal head supporting plate and a hold-down mechanism which are installed on the bracket in front and back relative, characterized in that,

the hold-down mechanism includes:

the first support shaft is transversely arranged and rotatably mounted on the bracket, and one end of the first support shaft is fixedly connected with a wrench;

the second support shaft is arranged in front of the first support shaft in parallel and is rotatably arranged on the bracket, and rotation stopping mechanisms are arranged at two ends of the second support shaft;

and at least a set of pressure regulating assembly, pressure regulating assembly includes first connecting rod, second connecting rod, telescopic link, sliding sleeve, pressure head and spring, the rear end of first connecting rod is fixed in first support shaft, the front end of first connecting rod articulate in the rear end of second connecting rod, the rear end of telescopic link articulate in the second support shaft, the sliding sleeve slides and cup joints on the telescopic link, and the front end of second connecting rod articulates on the sliding sleeve, pressure head is connected at the front end of telescopic link and can be pressed in the temperature sensing head backup pad, the spring housing is established on the telescopic link, the both ends of spring link to each other with sliding sleeve and pressure head respectively.

2. The thermal head pressing mechanism of a bar code label printer according to claim 1, wherein said wrench has a first pin hole at a front portion thereof, said bracket has a plurality of second pin holes at different heights thereof, said second pin holes being aligned with said first pin holes, and said wrench is locked to said bracket by a locking pin inserted through said first pin hole and said second pin hole at any one height.

3. The thermal head pressing mechanism of a bar code label printer according to claim 1, wherein said rotation stopping mechanism includes a lower stopper fixed to said frame and an upper stopper fixed to said second supporting shaft, and when said upper stopper abuts against said lower stopper, said second supporting shaft is stopped.

4. The thermal head clamping mechanism of a bar code label printer as claimed in claim 1, wherein said pressure regulating members are disposed in two sets opposite to each other in the left and right direction.

5. The thermal head pressing mechanism of a barcode label printer according to claim 1, wherein a front end of the pressing head is hemispherical.

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