Double-roller pressing structure and label printer using same

Abstract

The utility model relates to the technical field of pressing rollers, in particular to a double-roller pressing structure and a label printer using the same. The double-roller pressing structure comprises a rack, a mounting frame is arranged in the rack, a movable roller and a pressing roller are rotationally arranged on the mounting frame, and a pressing gap is formed between the movable roller and the pressing roller. The handle is rotationally arranged on the rack; the handle penetrates through the rack to be connected with the transmission assembly, and the transmission assembly is used for driving the movable roller to ascend and descend so that the movable roller can be close to or away from the pressing roller; and the elastic tensioning piece is arranged on the rack and used for tensioning the movable roller so that the material pressing gap can be smaller than a preset threshold value. The elastic tensioning part is additionally arranged, it is guaranteed that the movable roller automatically returns to the original position after printing the convex pattern through the elastic tensioning part, the problem that the conveying speed of a printing material is not uniform due to printing of the convex pattern is solved, the situation that colors are not overlapped is avoided, and the printing quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compression roller technical field, concretely is a double roll compression structure and use its label printer. BACKGROUND

[0002] In the structure of the existing crystal number digital printer on the market, the handle is usually arranged at the side of the printer, the round steel branch is directly connected to the hand wheel outside the box through the printer box door, and a cam device is further arranged to compress and separate the film heating rubber roll.

[0003] However, the above structure has the following disadvantages: ① since the cam device is not provided with a tensioning device, the paper pressing rubber roll will be slightly upward during printing of a part of the convex surface pattern, and the paper pressing rubber roll cannot automatically return to the original position after printing of the convex surface pattern, so that the subsequent paper feeding speed changes, and thus color overlap does not occur, which affects the printing quality; ② since the hand wheel is arranged at the side of the printing frame, the operator needs to walk to the side of the machine to operate when adjusting the machine and compressing and separating the film heating rubber roll, which is relatively inconvenient. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a double roll compression structure and a label printer using the same, and aims to solve the technical problem that the cam device of the existing crystal number digital printer is not provided with a tensioning device, resulting in poor printing quality.

[0005] To achieve the above object, the utility model provides a double roll compression structure, which comprises a rack, an installation frame is arranged in the rack, a movable roller and a pressing roller are rotatably arranged on the installation frame, and a pressing gap is formed between the movable roller and the pressing roller;

[0006] A handle is rotatably arranged on the rack.

[0007] A transmission assembly is connected with the transmission assembly through the rack, and the transmission assembly is used for driving the movable roller to ascend and descend, so that the movable roller approaches or moves away from the pressing roller.

[0008] An elastic tensioning piece is arranged on the rack, and the elastic tensioning piece is used for tensioning the movable roller, so that the pressing gap is smaller than a preset threshold.

[0009] Preferably, the installation frame comprises two first supports and two second supports which are arranged at intervals, the first supports are arranged above the second supports, two ends of the movable roller are rotatably connected with the two first supports respectively, and two ends of the pressing roller are rotatably connected with the two second supports respectively.

[0010] Two limiting supports are arranged in the frame, and the two ends of the movable roller pass through the movable holes of the two limiting supports and are rotatably connected with the two first supports.

[0011] Preferably, the transmission assembly comprises a transmission shaft, a first bevel gear, a second bevel gear, a first cam, a cam linkage shaft and a second cam, the handle is connected with the transmission shaft through the frame, the end of the transmission shaft is provided with the first bevel gear, the first bevel gear is arranged in meshing with the second bevel gear, the second bevel gear is connected with the first cam, the first cam is connected with the cam linkage shaft, the end of the cam linkage shaft is connected with the second cam, the first cam is rotatably arranged in the second support on one side, and the second cam is rotatably arranged in the second support on the other side, so that:

[0012] When the handle is rotated, the transmission shaft, the first bevel gear, the second bevel gear, the first cam, the cam linkage shaft and the second cam are synchronously rotated, the first cam and the second cam pull the second support to move downwards, the first support moves downwards along with the second support, and the movable roller moves in the movable hole and approaches the pressure roller.

[0013] Preferably, the handle is located on the front side of the frame.

[0014] Preferably, the elastic tensioning member is a spring, the two ends of the spring are connected with the frame and the second support respectively, and the second support is provided with the spring on both sides.

[0015] The first support and the second support are detachably connected through a connecting bolt, and a compression spring is sleeved on the connecting bolt.

[0016] Preferably, the two second supports are respectively provided with at least two springs.

[0017] Preferably, a plurality of connecting holes are arranged on the frame in the vertical direction, and the connecting holes are used for connecting the springs.

[0018] Preferably, the outer edge of the handle is provided with a plurality of grooves for hand pinching.

[0019] Preferably, the movable roller and the pressure roller are rubber rollers.

[0020] In addition, the utility model also proposes a label printer using the double-roller pressing structure.

[0021] The double-roller pressing structure and the label printer using the same have the following beneficial effects:

[0022] 1. Through the elastic tensioning piece added, the elastic tensioning piece is used to ensure that the movable roller automatically returns to the original position after printing the convex surface pattern, eliminates the problem of different printing material conveying speeds caused by printing the convex surface pattern, avoids the situation of color overlapping, and improves the printing quality.

[0023] 2. By arranging the handle on the front side of the rack, the operator only needs to stand in front of the label printer to complete the pressing and separation of the movable roller and the pressing roller, which is more convenient for the operator to operate. BRIEF DESCRIPTION OF DRAWINGS

[0024] 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 as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0025] Figure 1 It is a structural schematic view of the double-roller pressing structure of the present application.

[0026] Figure 2 It is Figure 1 It is a local enlarged schematic view of position A in figure 2.

[0027] Figure 3 It is Figure 1 It is a local enlarged schematic view of position B in figure 2.

[0028] In the drawings: 1-rack, 11-mounting frame, 111-first support, 112-second support, 113-connection bolt, 114-pressure spring, 12-limiting support, 121-movable hole, 13-connection hole, 2-movable roller, 3-pressing roller, 4-handle, 41-groove, 5-transmission assembly, 51-transmission shaft, 52-first bevel gear, 53-second bevel gear, 54-first cam, 55-cam linkage shaft, 56-second cam, 6-elastic tensioning piece.

[0029] The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] It should be noted that if the embodiment of the utility model has directionality indication, the directionality indication is only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directionality indication also changes accordingly.

[0032] In addition, if the embodiment of the utility model has the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

[0033] As shown in Figures 1 to 3 A double roller pressing structure, comprising a rack 1, a mounting frame 11 is arranged in the rack 1, a movable roller 2 and a pressing roller 3 are rotatably arranged on the mounting frame 11, and a pressing gap is formed between the movable roller 2 and the pressing roller 3.

[0034] A handle 4 is rotatably arranged on the rack 1.

[0035] A transmission assembly 5 is connected with the rack 1 and the handle 4, and the transmission assembly 5 is used for driving the movable roller 2 to ascend or descend, so that the movable roller 2 is close to or away from the pressing roller 3.

[0036] An elastic tensioning piece 6 is arranged on the rack 1, and the elastic tensioning piece 6 is used for tensioning the movable roller 2, so that the pressing gap is less than a preset threshold.

[0037] The double roller pressing structure in the scheme is suitable for various printers, and is particularly suitable for crystal label film printing.

[0038] Specifically, the basic structure of the scheme comprises the rack 1, the mounting frame 11, the movable roller 2 and the pressing roller 3, the transmission assembly 5 is driven to move by rotating the handle 4, so that the movable roller 2 is close to or away from the pressing roller 3, thereby adjusting the size of the pressing gap, and the crystal label can be printed on the surface of the material after the material passes through the pressing gap. In particular, the elastic tensioning piece 6 is additionally arranged, the elastic tensioning piece 6 is used to ensure that the movable roller 2 automatically returns to the original position after printing the convex surface pattern, so that the pressing gap is always controlled within the preset threshold, the problem of different printing material conveying speeds caused by printing the convex surface pattern is eliminated, the color overlapping problem is avoided, and the printing quality is improved.

[0039] Further, the mounting frame 11 comprises two first supports 111 and two second supports 112, the first supports 111 are arranged above the second supports 112, two ends of the movable roller 2 are rotatably connected with the two first supports 111 respectively, and two ends of the pressing roller 3 are rotatably connected with the two second supports 112 respectively.

[0040] Two limiting supports 12 are arranged in the rack 1, the limiting supports 12 are provided with movable holes 121, and two ends of the movable roller 2 pass through the movable holes 121 of the two limiting supports 12 and are rotatably connected with the two first supports 111.

[0041] The movable roller 2 is arranged on the first support 111 and can be lifted, the pressing roller 3 is arranged on the second support 112 and is fixed, both of which can rotate freely, in order to limit the lifting range of the movable roller 2, the limiting support 12 is arranged on the rack 1, the lifting range of the movable roller 2 is between the movable holes 121, so as to avoid that the movable roller 2 is too far away from the pressing roller 3, generally, the size of the movable hole 121 is larger than the size of the rotating shaft of the two ends of the movable roller 2, so as to facilitate the up and down movement of the movable roller 2 in the movable hole 121.

[0042] Further, the transmission assembly 5 comprises a transmission shaft 51, a first bevel gear 52, a second bevel gear 53, a first cam 54, a cam linkage shaft 55 and a second cam 56, the handle 4 is connected with the transmission shaft 51 through the rack 1, the transmission shaft 51 is provided with the first bevel gear 52 at the end, the first bevel gear 52 is arranged in meshing with the second bevel gear 53, the second bevel gear 53 is connected with the first cam 54, the first cam 54 is connected with the cam linkage shaft 55, the end of the cam linkage shaft 55 is connected with the second cam 56, the first cam 54 is rotatably arranged in the second support 112 on one side, and the second cam 56 is rotatably arranged in the second support 112 on the other side, so that:

[0043] When the handle 4 is rotated, the transmission shaft 51, the first bevel gear 52, the second bevel gear 53, the first cam 54, the cam linkage shaft 55 and the second cam 56 rotate synchronously, the first cam 54 and the second cam 56 pull the second support 112 to move downward, the first support 111 moves downward accordingly, and the movable roller 2 moves in the movable hole 121 and approaches the pressing roller 3.

[0044] The double-roller pressing structure mainly utilizes the rotation of the handle 4. Since the transmission shaft 51 is connected with the first bevel gear 52, and the first bevel gear 52 is connected with the second bevel gear 53, the rotation of the two bevel gears can be driven by utilizing the transmission principle of the bevel spur gear, so as to drive the synchronous rotation of the first cam 54, the second cam 56 and the cam linkage shaft 55. The high and low points of the first cam 54 and the second cam 56 are utilized to pull or loosen the second support 112. The movement trend of the first support 111, the movable roller 2 and the second support 112 is synchronous. When the movable roller 2 moves up and down in the movable hole 121, the movable roller 2 moves close to or away from the pressing roller 3, so as to realize the pressing and separation between the movable roller 2 and the pressing roller 3.

[0045] Further, the handle 4 is located at the front side of the rack 1. In this way, the operator only needs to stand in front of the label printer to complete the pressing and separation of the movable roller 2 and the pressing roller 3, which is more convenient for the operator to operate.

[0046] Further, the elastic tensioning member 6 is a spring, two ends of the spring are connected with the rack 1 and the second support 112 respectively, and the second support 112 on both sides is provided with the spring; the first support 111 and the second support 112 are detachably connected through the connecting bolt 113, and the connecting bolt 113 is sleeved with the pressure spring 114. The spring is directly used as the elastic tensioning member 6 for providing tensioning force, which is usually a tensile spring and can maintain long-term and stable tensioning effect.

[0047] The first support 111 and the second support 112 are connected through the connecting bolt 113 and the pressure spring 114, and the connection relationship is relatively stable.

[0048] Further, the two second supports 112 are respectively provided with at least two springs. The four groups of springs arranged on both sides of the second support 112 are used to realize tensioning together, and the provided tensioning force is larger, so that the movable roller 2 cannot be too far away from the pressing roller 3, and the pressing gap is always less than a preset threshold.

[0049] Further, a plurality of connecting holes 13 are formed in the rack 1 in the vertical direction, and the connecting holes 13 are used for connecting the springs. The required tensioning force provided by the spring is different in different scenes. In order to ensure that the tensioning force provided by the spring is just in a suitable range, a plurality of connecting holes 13 are arranged on the rack 1, and one end of the spring connected with the rack 1 can be fixed on different connecting holes 13, so as to adjust the size of the tensioning force and ensure that the pressing gap is always in a suitable range.

[0050] Further, a plurality of grooves 41 for pinching the hands are arranged on the outer edge of the handle 4. The arrangement of the grooves 41 on the outer edge of the handle 4 is more convenient for the fingers to grip, the operator can hold more stably, and the movable roller 2 can be adjusted through the handle 4.

[0051] Further, the active roller 2 and the pressure roller 3 are rubber rollers. The rubber rollers provide basic functions such as printing, traction and smoothing of the material when the material passes through the printer. The rubber coating of the rubber rollers can ensure consistent and accurate movement of the material, has a good gripping effect on the material, can prevent the material from slipping and mispositioning, avoid printing errors, and also has a certain buffering effect to reduce vibration and impact, ensure that the label is printed smoothly on the material, and realize high-quality printing.

[0052] In particular, the utility model also provides a label printer using the double-roller pressing structure. The label printer uses the double-roller pressing structure, thus having the same beneficial effects as the double-roller pressing structure, which will not be repeated here.

[0053] The double-roller pressing structure is located at a front position in the frame 1 of the label printer, so that the operator can easily and conveniently loosen or press the double-roller pressing structure, shorten the machine debugging time, improve the work efficiency, reduce the maintenance cost, and the maintenance personnel can easily open the cabinet door on the frame 1 to maintain without dismounting the handle 4.

[0054] The above description is only the preferred embodiments of the utility model, and does not limit the patent range of the utility model. Any equivalent structural transformation, direct / indirect application in other related technical fields under the inventive concept of the utility model, and the contents of the utility model specification and drawings are included in the patent protection range of the utility model.

Claims

1. A double-roller pinch structure, characterized by, Include: Frame (1), which is internally provided with a mounting frame (11), the mounting frame (11) is provided with a movable roller (2) and a pressing roller (3) rotatingly arranged, and the movable roller (2) and the pressing roller (3) have a pressing gap therebetween; Handle (4) is rotatably arranged on the frame (1); Transmission assembly (5), the handle (4) passes through the frame (1) and is connected with the transmission assembly (5), the transmission assembly (5) is used for driving the movable roller (2) to lift, so that the movable roller (2) is close to or away from the pressing roller (3); Elastic tensioning member (6) is arranged on the frame (1), and the elastic tensioning member (6) is used for tensioning the movable roller (2), so that the pressing gap is less than a preset threshold.

2. A double roll pinch structure according to claim 1, wherein The mounting frame (11) includes two first supports (111) and two second supports (112) arranged at intervals, the first support (111) is arranged above the second support (112), and the two ends of the movable roller (2) are rotatably connected with the two first supports (111), respectively, and the two ends of the pressing roller (3) are rotatably connected with the two second supports (112), respectively; The frame (1) is further provided with two limiting supports (12), the limiting supports (12) are provided with movable holes (121), and the two ends of the movable roller (2) pass through the movable holes (121) of the two limiting supports (12) and are rotatably connected with the two first supports (111), respectively.

3. A double roll pinch structure according to claim 2, wherein The transmission assembly (5) includes a transmission shaft (51), a first bevel gear (52), a second bevel gear (53), a first cam (54), a cam linkage shaft (55) and a second cam (56), the handle (4) passes through the frame (1) and is connected with the transmission shaft (51), the end of the transmission shaft (51) is provided with the first bevel gear (52), the first bevel gear (52) is meshed with the second bevel gear (53), the second bevel gear (53) is connected with the first cam (54), the first cam (54) is connected with the cam linkage shaft (55), the end of the cam linkage shaft (55) is connected with the second cam (56), the first cam (54) is rotatably inserted into the second support (112) on one side, and the second cam (56) is rotatably inserted into the second support (112) on the other side, so that: When the handle (4) is rotated, the transmission shaft (51), the first bevel gear (52), the second bevel gear (53), the first cam (54), the cam linkage shaft (55) and the second cam (56) rotate synchronously, the first cam (54) and the second cam (56) pull the second support (112) to move downward, the first support (111) moves downward, the movable roller (2) moves in the movable hole (121) and approaches the pressing roller (3).

4. The double roll press structure according to claim 1, wherein The handle (4) is located on the front side of the frame (1).

5. A double roll pinch structure according to claim 2, wherein The elastic tensioning member (6) is a spring, two ends of the spring are connected with the rack (1) and the second support (112) respectively, and the second support (112) on both sides is provided with the spring; The first support (111) and the second support (112) are detachably connected through a connecting bolt (113), and a pressure spring (114) is sleeved on the connecting bolt (113).

6. A double roll pinch structure according to claim 5, wherein Two second supports (112) are respectively provided with at least two springs.

7. A dual roll pinch structure according to claim 5, wherein A plurality of connecting holes (13) are formed in the vertical direction on the rack (1), and the connecting holes (13) are used for connecting the springs.

8. A dual roll pinch structure according to claim 1, wherein The outer edge of the handle (4) is provided with a plurality of recesses (41) for hand holding.

9. A dual roll pinch structure according to claim 1, wherein The movable roller (2) and the pressing roller (3) are rubber rollers.

10. A label printer characterized by comprising: Use the double-roller pressing structure according to any one of claims 1-9.

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