Improvements in paper clamps for printers

Abstract

The utility model provides a kind of paper gripper improvement structure for printer, it includes: a shell, the shell is equipped with a recess, the recess has a first side wall and a second side wall;A limiting mechanism, the limiting mechanism is equipped with a first positioning member and a second positioning member, the distance between the first positioning member and the first side wall of the recess, equal the distance between the second positioning member and the second side wall of the recess. By the limiting mechanism can be centered to the recess, so that the paper gripper for printer, without using the support rod or support bump used to support the circular paper roll, the circular paper roll can be easily put into and centered in the recess directly.

Description

Technical Field

[0001] This utility model relates to a paper clamp, and more particularly to an improved paper clamp structure for a printer. Background Technology

[0002] For example, patent application publication number CN103204004A discloses a "device for adjusting the print width of a POS printer," and in CN103204004A... Figure 6 and Figure 7A As shown, its paper guiding mechanism is configured to reciprocate laterally on the support frame. The position of the paper guiding mechanism can be adjusted according to the width of the paper detected by the switch contacts, so that the paper guiding mechanism supports the paper.

[0003] However, in this case, because the paper guiding mechanism is biased to one side rather than in the center, when a round paper roll is placed in the groove, the paper must be squeezed to one side of the groove, resulting in uneven force on the paper, which in turn causes unstable paper clamping, and even printing failure and positional deviation.

[0004] For example Figure 10 and Figure 11 As shown, although it can center the circular paper roll, it requires the use of a separate support rod 32 or support protrusion 33. In practical applications, when using circular paper rolls 6 or 6a of different diameters or widths, different corresponding support rods 32 or support protrusions 33 must be replaced, and they must pass through or through the hollow portion 34 of the circular paper roll 6 or 6a to provide support and center the paper roll. This replacement process not only causes inconvenience in use but also leads to inaccurate positioning of the circular paper roll 6 or 6a. Furthermore, when the circular paper roll 6 or 6a continuously rotates to output paper for printing, uneven force distribution can cause paper shifting, resulting in misaligned printing and even paper jamming, affecting the stability and reliability of the printing operation.

[0005] Therefore, how to eliminate the aforementioned deficiencies is the technical challenge that the designer of this case wants to solve. Utility Model Content

[0006] Therefore, in view of the problems and deficiencies of the existing technology, the purpose of this utility model is to provide an improved structure for a paper gripper in a printer.

[0007] To achieve the above objectives, this utility model provides an improved paper gripper structure for a printer, comprising:

[0008] A housing having a slot and a recess having a first sidewall and a second sidewall.

[0009] A limiting mechanism is provided, which includes a rolling element that is movably engaged in the groove. The limiting mechanism also includes a first positioning element and a second positioning element that are movably engaged in the rolling element. The distance between the first positioning element and the first sidewall of the groove is equal to the distance between the second positioning element and the second sidewall of the groove.

[0010] The housing is equipped with a paper guiding mechanism.

[0011] The first or second positioning component of the limiting mechanism is a partition.

[0012] The rolling element of the limiting mechanism is a strip-shaped roller.

[0013] The first positioning element is arranged parallel to the first sidewall of the groove.

[0014] The second positioning element is arranged parallel to the second sidewall of the groove.

[0015] The groove is an arc-shaped groove.

[0016] In a preferred embodiment, it further includes a cover disposed above the housing.

[0017] The cover is equipped with a printing device.

[0018] By means of the limiting mechanism, the paper clamp for the printer can be centered and placed in the groove, so that the paper clamp does not need to use the support rod or support protrusion traditionally used to support the circular paper roll, and the circular paper roll can be easily inserted and placed in the groove. Attached Figure Description

[0019] Figure 1 This is an exploded view of the shell of this utility model, where the cover is not shown.

[0020] Figure 2 This is a schematic diagram of the shell assembly without a cover in this utility model.

[0021] Figure 3 This is an exploded view of the limiting mechanism of this utility model.

[0022] Figure 4 This is a schematic diagram of a circular paper roll with a small diameter placed in a groove according to the present invention.

[0023] Figure 5 This is a schematic diagram of a circular paper roll with a relatively large diameter placed into a groove according to the present invention.

[0024] Figure 6 This is a schematic diagram of the adjusting rolling element of this utility model before its operation.

[0025] Figure 7A This is a schematic diagram of the adjusting rolling element after its operation.

[0026] Figure 7B This is a schematic diagram of the circular paper roll with a relatively small width being placed into the groove according to this utility model.

[0027] Figure 7C This is a schematic diagram of the circular paper roll of this utility model with a relatively large width being placed into the groove.

[0028] Figure 8 This is a schematic diagram of the printer paper being fully centered before the operation of this utility model.

[0029] Figure 9 This is a schematic diagram illustrating the operation of the printer that centers the paper to prevent paper jamming.

[0030] Figure 10 This is a schematic diagram of the support rod assembly of an existing paper clamp.

[0031] Figure 11 This is a schematic diagram of the support protrusion assembly of an existing paper clamp.

[0032] Explanation of reference numerals in the attached drawings: 1-shell; 11-slot; 12-groove; 121-first sidewall; 122-second sidewall; 123-arc-shaped bottom; 13-paper guiding mechanism; 2-limiting mechanism; 21-rolling element; 211-thread; 22-first positioning element; 23-second positioning element; 5, 5a, 3, 3a, 6, 6a-circular paper roll; 31-output end; 32-support rod; 33-support protrusion; 34-hollow part; 4-cover; 41-printing device; d1, d2-distance; D1, D2-diameter; W1, W2-width. Detailed Implementation

[0033] To facilitate a concise understanding of the other features, advantages, and effects of this utility model, the following detailed description, in conjunction with the accompanying drawings, is provided:

[0034] Please see Figure 1 and Figure 2 As shown, this utility model provides an improved paper gripper structure for a printer, which includes:

[0035] A housing 1, the housing 1 having a slot 11 and a groove 12, the groove 12 having a first sidewall 121 and a second sidewall 122, the groove 12 may be an arc-shaped groove.

[0036] A limiting mechanism 2 includes a rolling element 21 that is movably engaged with a slot 11. The limiting mechanism 2 also includes a first positioning element 22 and a second positioning element 23, which are movable to engage the rolling element 21 and cooperate with it. Figure 7A As shown, the distance d1 between the first positioning member 22 and the first side wall 121 of the groove 12 is equal to the distance d2 between the second positioning member 23 and the second side wall 122 of the groove 12.

[0037] The first positioning member 22 and the second positioning member 23 are both disposed between the first side wall 121 and the second side wall 122 of the groove 12. The rolling member 21 can be a strip-shaped roller. The first positioning member 22 and the second positioning member 23 are movably engaged or screwed onto the rolling member 21.

[0038] By means of the rolling element 21 of the limiting mechanism 2 being movably engaged with the slot 11 of the housing 1, the limiting mechanism 2 can be quickly installed or disassembled. When a part is damaged, the design of disassembling the limiting mechanism 2 can achieve the effect of quick installation and replacement, and convenient maintenance, thereby reducing maintenance time and cost.

[0039] Please see Figure 3 and Figure 1 As shown, the limiting mechanism 2 includes a rolling element 21, which can be a strip-shaped roller with a thread 211. The first positioning element 22 and the second positioning element 23 of the limiting mechanism 2 are movably engaged or screwed onto the strip-shaped roller and cooperate with it. Figure 7A As shown, when the rolling element 21 rolls, the thread 211 can simultaneously drive the first positioning element 22 and the second positioning element 23 to move along the axial direction of the strip roller.

[0040] Please see Figure 4 and Figure 5 As shown, a circular paper roll 5 or a circular paper roll 5a is placed into the groove 12. The diameter D1 of the circular paper roll 5 is smaller than the diameter D2 of the circular paper roll 5a. Because the groove 12 has an arc-shaped bottom 123, circular paper rolls 5 or 5a of different diameters can stably contact the arc-shaped bottom 123 and cooperate... Figure 7A As shown, the circular paper roll 5 or the circular paper roll 5a is placed between the first positioning member 22 and the second positioning member 23. Then, by adjusting the equidistant distance between the first positioning member 22 and the second positioning member 23, d1 equals d2, thus positioning the circular paper roll 5 or the circular paper roll 5a. The first positioning member 22 or the second positioning member 23 can be a partition to accommodate circular paper rolls 5 or the circular paper roll 5a of different diameters.

[0041] Please see Figure 6 and Figure 7A As shown, by rotating the rolling element 21, the first positioning element 22 and the second positioning element 23 can be driven to move equidistantly relative to the first sidewall 121 and the second sidewall 122 of the groove 12, respectively, so that the distance d1 between the first positioning element 22 and the first sidewall 121 of the groove 12 is equal to the distance d2 between the second positioning element 23 and the second sidewall 122 of the groove 12. Since d1 equals d2, this achieves the purpose of clamping or releasing the circular paper roll 5 or the circular paper roll 5a, and positions the output end 31 of the circular paper roll 5 or the circular paper roll 5a upwards towards the rolling element 21, achieving a stable paper output effect. Furthermore, by setting the first positioning element 22 parallel to the first sidewall 121 of the groove 12, and the second positioning element 23 parallel to the second sidewall 122 of the groove 12, an equidistant positioning effect is achieved.

[0042] Furthermore, please refer to Figure 7B and Figure 7C As shown, a circular paper roll 3 or a circular paper roll 3a is placed into the groove 12. The width W1 of the circular paper roll 3 is smaller than the width W2 of the circular paper roll 3a. The circular paper roll 3 or the circular paper roll 3a is positioned between the first positioning member 22 and the second positioning member 23, and cooperates with the groove. Figure 7A As shown, by adjusting the equidistant distance between the first positioning member 22 and the second positioning member 23, d1 equals d2, thus positioning the circular paper roll 3 or the circular paper roll 3a. This allows the use of circular paper rolls 3 or 3a of different widths, and achieves the effect of easily inserting and centering the circular paper roll 3 or 3a into the groove 12. The first positioning member 22 or the second positioning member 23 can be a partition to accommodate circular paper rolls 3 or 3a of different widths W1 and W2.

[0043] Please see Figure 8 and Figure 9 As shown, a cover 4 is provided with a printing device 41. The cover 4 is located above the housing 1 and is rotatably connected to the housing 1, so that the cover 4 can be opened or closed relative to the housing 1. The housing 1 is provided with a paper guiding mechanism 13, which can guide the output end 31 of the circular paper roll 5 or the circular paper roll 5a through the printing device 41 and output and move to the outside of the housing 1. By means of the above structure, the purpose of printing data on the surface of the circular paper roll 5 or the circular paper roll 5a can be achieved.

[0044] In summary, the aforementioned structural combination and the positioning mechanism 2, which is centered and positioned within the groove 12, allow the use of circular paper rolls 5, 5a, 3, and 3a with different diameters D1 and D2 and different widths W1 and W2, thereby improving user convenience. Furthermore, the positioning mechanism 2 allows the circular paper rolls 5, 5a, 3, and 3a to be easily inserted into and centered within the groove 12, eliminating the need for traditional support rods 32 or support protrusions 33 that require passing through or through the hollow portion 34 of the circular paper rolls 6, 6a. This enables the paper gripper for the printer to operate more smoothly and effectively achieve the purpose of printing data. When parts are damaged, the modular design simplifies the repair process, saving time and manpower, and further reducing repair costs.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, any equivalent changes in shape, structure or combination made without departing from the spirit and scope of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. An improved paper gripper structure for a printer, characterized in that, Include: A housing having a slot and a recess having a first sidewall and a second sidewall; A limiting mechanism is provided, which includes a rolling element that is movably engaged in the groove. The limiting mechanism also includes a first positioning element and a second positioning element that are movably engaged in the rolling element. The distance between the first positioning element and the first sidewall of the groove is equal to the distance between the second positioning element and the second sidewall of the groove.

2. The improved paper gripper structure for a printer as described in claim 1, characterized in that: The housing is equipped with a paper guiding mechanism.

3. The improved paper gripper structure for a printer as described in claim 1, characterized in that: The first or second positioning component of the limiting mechanism is a partition.

4. The improved paper gripper structure for a printer as described in claim 1, characterized in that: The rolling element of the limiting mechanism is a strip-shaped roller.

5. The improved paper gripper structure for a printer as described in claim 1, characterized in that: The first positioning element is arranged parallel to the first sidewall of the groove.

6. The improved paper gripper structure for a printer as described in claim 1, characterized in that: The second positioning element is arranged parallel to the second sidewall of the groove.

7. The improved paper gripper structure for a printer as described in claim 1, characterized in that: The groove is an arc-shaped groove.

8. The improved paper gripper structure for a printer as described in claim 1, characterized in that: It also includes a cover body located above the housing.

9. The improved paper gripper structure for a printer as described in claim 8, characterized in that: The cover is equipped with a printing device.

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