Adjusting mechanism of card bin plate of label printer

Abstract

The utility model discloses an adjusting mechanism of a card bin plate of a label printer, which is simple in structure and can clamp and limit to-be-printed cards with any width. Comprising a card bin for containing a to-be-printed card, a left bin plate and a right bin plate, gear avoiding structures capable of avoiding a main gear are arranged at the lower ends of the left bin plate and the right bin plate, and the gear avoiding structures enable the minimum distance to be smaller than the diameter of the main gear when the left bin plate and the right bin plate oppositely move to the minimum distance between the left bin plate and the right bin plate. According to the label printer, the gear avoiding structure and the sliding plate avoiding structure are arranged on the left bin plate and the right bin plate which are used for transversely limiting the cards in the card bin, so that the left bin plate and the right bin plate oppositely move to the state that the distance between the left bin plate and the right bin plate can be zero, and therefore, the label printer is suitable for printing any cards with small sizes and widths. In addition, the card bin is further provided with a locking and positioning structure for locking the left bin plate or the right bin plate, so that the phenomenon that the left bin plate or the right bin plate moves outwards in the transverse direction due to vibration generated by the printer in the printing process is effectively prevented.

Description

Technical Field

[0001] The utility model relates to a card printer, in particular to a card printer with an improved card bin. Background Art

[0002] A card printer in the prior art includes a card bin 1 for storing blank cards to be printed, and the card bin 1 includes a left clamp (also called a left bin plate 3) and a right clamp (also called a right bin plate 4) that hold the cards in symmetrical positions with the central axis of the card conveying direction. The left clamp and the right clamp can move toward and away from each other. During use, the left clamp and the right clamp can adjust the distance therebetween in time according to the width of the card to limit the card laterally (in the width direction) to ensure that the card is placed in the middle position of the printing channel, which can effectively prevent the card from deviating when being conveyed toward the print head.

[0003] At present, the above-mentioned card printer still has the following shortcomings (see Fig.15 , Fig.16 shown):

[0004] 1. Since the left clamping plate and the right clamping plate are respectively mounted on the left slide plate 31 and the right slide plate 41, the movement of the left slide plate 31 and the right slide plate 41 toward or away from each other is driven by the main gear 2 arranged therebetween, and the main gear 2 is interposed between the left clamping plate and the right clamping plate. Therefore, when the left slide plate 31 and the right slide plate 41 respectively drive the left clamping plate and the right clamping plate to move toward each other, under the influence of the main gear 2, there must be a spacing of at least the diameter of the main gear 2 between the left clamping plate and the right clamping plate. Assuming that the diameter of the main gear 2 is D, when the width of the card to be printed is less than D, the left clamping plate and the right clamping plate will not play a limiting role on the card to be printed.

[0005] 2. In the card printer of the prior art, after the positions of the left and right clamps are adjusted, during the printing process, the continuous printing action will generate some vibrations on the printer, and these vibrations will cause the left and right clamps to slightly move away from each other. As the vibration continues, the movement away from each other will intensify, causing the left and right clamps to fail in their card limiting function. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an adjusting mechanism for a card bin plate of a label printer which has a simple structure and can clamp and limit cards to be printed of any width.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] The utility model discloses an adjustment mechanism for a card bin plate of a label printer, comprising a card bin for placing a plurality of cards to be printed in a stacked manner, a left bin plate and a right bin plate for preventing the cards to be printed from deviating and which can move relative to or opposite to each other under the drive of a driving mechanism, wherein the driving mechanism is composed of a main gear placed on a frame plate below the card bin, a left slide fixedly connected to and perpendicular to the left bin plate, and a right slide fixedly connected to and perpendicular to the right bin plate, the left slide being arranged opposite to the right slide front and back, the main gear being placed between the left slide and the right slide and meshing with the racks on the left slide and the right slide respectively, and characterized in that a gear avoidance structure capable of avoiding the main gear is provided at the lower ends of the left bin plate and the right bin plate, wherein the gear avoidance structure enables the left bin plate and the right bin plate to move toward each other to a minimum spacing therebetween, and the minimum spacing is smaller than the diameter of the main gear.

[0009] The gear avoidance structure comprises a gear avoidance left structure and a gear avoidance right structure. The gear avoidance left structure is a wheel avoidance lower left plate which is arranged at the rear side of the left end portion of the left skateboard and extends upward. The gear avoidance right structure is a wheel avoidance lower right plate which is arranged at the front side of the right end portion of the right skateboard and extends upward. The wheel avoidance lower left plate has the same structure as the wheel avoidance lower right plate, and is divided into a lower vertical plate, a middle flat plate and an upper vertical plate from bottom to top. The lower end of the lower vertical plate is connected to the corresponding left skateboard or right skateboard, and the upper end of the upper vertical plate is connected to the corresponding warehouse left plate or warehouse right plate. The bottom surface of the middle flat plate is higher than the highest point on the main gear.

[0010] A left upper wheel avoidance plate extending downward and protruding is provided at the lower edge of the left plate of the warehouse, and a right upper wheel avoidance plate extending downward and protruding is provided at the lower edge of the right plate of the warehouse; the upper vertical plate of the left lower wheel avoidance plate is fixedly connected to the left upper wheel avoidance plate, and the upper vertical plate of the right lower wheel avoidance plate is fixedly connected to the right upper wheel avoidance plate.

[0011] A fixed adjustment mechanism which can lock the left bin plate and the right bin plate on the frame is arranged on the outer side of the rear end of the left bin plate or the right bin plate.

[0012] The fixed adjustment mechanism includes a positioning plate, a positioning nut and a positioning bolt which are arranged at the rear end of the left or right warehouse plate and extend horizontally outward. The rear end of the positioning plate protrudes backward from the rear end edge of the corresponding left or right warehouse plate. A positioning hole is provided at the rear end of the positioning plate, and a base plate positioning groove is provided on the rack plate. The positioning bolt passes through the positioning hole and the base plate positioning groove and is locked with the positioning nut under the rack plate.

[0013] The fixed adjustment mechanism includes a spin lock member arranged on the outer side of the rear end of the left or right plate of the warehouse, and the spin lock member is composed of a positioning shaft and a spin plate. The positioning shaft is arranged on the outer side of the rear end of the left or right plate of the warehouse, and the spin plate can be rotatably sleeved on the positioning shaft. A lower protrusion is provided at the inner end of the spin plate. When the plate handle of the spin plate is screwed upward, the lower protrusion is disengaged from the contact with the frame plate. When the plate handle of the spin plate is screwed downward, the lower protrusion contacts the bottom surface of the frame plate.

[0014] The adjustment mechanism also includes a left avoidance structure of a skateboard and a right avoidance structure of a skateboard. The left avoidance structure of the skateboard is a left lower plate of the skateboard which is arranged at the front side of the left end portion of the left skateboard and extends upward; the right avoidance structure of the skateboard is a right lower plate of the skateboard which is arranged at the rear side of the right end portion of the right skateboard and extends upward; both the left lower plate of the skateboard and the right lower plate of the skateboard are straight plates, and their upper ends are connected to the corresponding left plate or right plate of the warehouse, and the height of the lower edge of the rear side section of the left plate of the warehouse near the connection with the left lower plate of the skateboard is higher than the height of the left guide member of the skateboard, and the height of the lower edge of the front side section of the right plate of the warehouse near the connection with the right lower plate of the skateboard is higher than the height of the right guide member of the skateboard.

[0015] A left upper plate of a skateboard extending downward is provided at the lower edge of the left plate of the warehouse, and a right upper plate of a skateboard extending downward is provided at the lower edge of the right plate of the warehouse; the upper end of the left lower plate of the skateboard is fixedly connected to the left upper plate of the skateboard, and the upper end of the right lower plate of the skateboard is fixedly connected to the right upper plate of the skateboard.

[0016] Compared with the label printer in the prior art, the present invention provides a gear avoidance structure and a slide avoidance structure on the left and right clamping plates (hereinafter referred to as the left and right plates) in the card bin for lateral limiting of the cards waiting to be printed, so that the left and right plates can move toward each other until the distance between them is zero. In this way, the label printer is suitable for printing any small-size cards. In addition, the present invention also provides a locking and positioning structure in the card bin that can lock the adjusted left or right plate in a set position, effectively preventing the vibration of the printer during the printing process from causing the left or right plate to shift outward laterally and lose the function of lateral clamping and limiting the cards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a card bin with a bin plate adjustment mechanism of the utility model.

[0018] Figure 2 for Figure 1 Schematic diagram of the two compartment plates of the middle card compartment moving towards each other to a close contact position.

[0019] Figure 3 for Figure 2 Schematic diagram after removing the two warehouse panels.

[0020] Figure 4 for Figure 2 Top view of the .

[0021] Figure 5 for Figure 1 Explosion diagram.

[0022] Figure 6 for Figure 1 Schematic diagram of the fixed structure of the card magazine assembled on the printer frame.

[0023] Figure 7 for Figure 6 One of the ways to tighten the middle card compartment on the printer frame.

[0024] Figure 8 for Figure 6 The second method of fastening the middle card compartment to the printer frame.

[0025] Fig. 9 For the general Figure 1 Schematic diagram of another fixed structure of the card magazine mounted on the printer frame.

[0026] Fig.10 for Fig. 9 Schematic diagram of the disassembled state of the fixed structure and the card compartment.

[0027] Fig.11 for Fig. 9 The middle fixed structure is a side view of the locked state.

[0028] Fig.12 for Fig. 9 The middle fixed structure is a side view of the released state.

[0029] Fig.13 for Fig. 9 Schematic diagram of the fixing parts of the fixing structure.

[0030] Fig.14 for Fig.13 Schematic diagram of the decomposition.

[0031] Fig.15 The figure is a schematic diagram of a card bin with a bin plate adjustment mechanism in the prior art.

[0032] Fig.16 for Fig.15 Schematic diagram of the two compartment plates of the middle card compartment moving towards each other to the extreme positions.

[0033] The reference numerals are as follows:

[0034] Card bin 1, card transmission channel 11, frame plate 12, main gear 2, bin left plate 3, left slide plate 31, left lower plate of wheel avoidance 32, left upper plate of wheel avoidance 33, left lower plate of slide plate 34, left upper plate of slide plate 35 、 Slide plate left guide 36, bin right plate 4, right slide plate 41, wheel avoidance right lower plate 42, wheel avoidance right upper plate 43, slide plate right lower plate 44, slide plate right upper plate 45, slide plate right guide 46 、 Lower vertical plate 51, middle flat plate 52, upper vertical plate 53, slide slot hole 54, positioning plate 61, base plate positioning slot 62, positioning bolt 63, positioning nut 64, positioning hole 65, positioning member 71, positioning shaft 72 、 The buckle plate 73. DETAILED DESCRIPTION

[0035] like Figure 1-Figure 6 As shown, the adjustment mechanism of the card bin 1 of the label printer of the utility model includes a left bin plate 3, a left slide plate 31, a right bin plate 4, a right slide plate 41, a main gear 2, a gear avoidance structure and a slide plate avoidance structure (with Figure 1 Taking the paper direction as an example, left is left, right is right, up is front, and down is back).

[0036] 1. Card compartment 1

[0037] An area for storing a plurality of cards waiting to be printed in a stacked manner, wherein the cards are clamped by a left bin plate 3 and a right bin plate 4 and placed in the card bin 1 in a symmetrical manner with the central axis of the card conveying direction as the central axis.

[0038] During printing, the bottom card in the card bin 1 is driven by the operation of the card conveyor belt or the conveyor rubber roller to move forward along the card conveying channel 11 to the printing position below the print head.

[0039] 2. Warehouse left board 3, left slide 31, warehouse right board 4, right slide 41

[0040] The left plate 3 of the bin is connected to the left slide plate 31, and the right plate 4 of the bin is connected to the right slide plate 41. The left plate 3 of the bin and the right plate 4 of the bin can move toward or away from each other, and their function is to perform lateral clamping and limiting on the cards in the card bin 1 to prevent the cards from lateral deviation during the forward movement. The lateral clamping and limiting means adjusting the distance between the left plate 3 of the bin and the right plate 4 of the bin to a state slightly larger than the width of the card, and the inner side surfaces of the left plate 3 of the bin and the right plate 4 of the bin can be in a state of slight contact with the edge of the card, or a certain distance can be left. The specific situation is to prevent the card from swerving and not hinder the forward movement of the card due to contact friction.

[0041] The specific structure is as follows:

[0042] The left bin plate 3 and the right bin plate 4 both extend upwards and are symmetrically arranged relative to each other with the central axis of the card conveying passage 11 of the printer as the center axis.

[0043] The left slide plate 31 and the right slide plate 41 are arranged horizontally and front and back oppositely in a manner perpendicular to the card conveying direction, and the opposite side edges of the left slide plate 31 and the right slide plate 41 are rack structures.

[0044] A slide slot hole 54 is provided on the left slide plate 31 and the right slide plate 41, and a slide plate left guide member 36 and a slide plate right guide member 46 are provided on the frame plate 12 of the printer. There are two left slide plate guide members 36 and two right slide plate guide members 46, and both are guide pins extending upward. The left slide plate 31 and the right slide plate 41 are respectively mounted on the corresponding guide pins with the slide slot holes 54 thereon to make reciprocating directional movements in the left and right directions.

[0045] The left bin plate 3 is mounted on the left end side of the left slide plate 31 in a manner perpendicular to the left slide plate 31. The right bin plate 4 is mounted on the right side end of the right slide plate 41 in a manner perpendicular to the right slide plate 41.

[0046] The movement of the left slide plate 31 and the right slide plate 41 drives the movement of the left bin plate 3 and the right bin plate 4 respectively.

[0047] 3. Main gear 2

[0048] The main gear 2 is mounted on the frame plate 12 and is located at the central axis of the card conveying channel 11 and between the left slide 31 and the right slide 41. The power input end of the main gear 2 is connected to the power output end of the driving motor installed below the frame plate 12. The main gear 2 is meshed with the racks on the left slide 31 and the right slide 41 respectively. When the main gear 2 rotates, it drives the left slide 31 and the right slide 41 to move relative to each other. Figure 1 For example, when the main gear 2 rotates clockwise, the left slide plate 31 and the right slide plate 41 respectively drive the left plate 3 and the right plate 4 to move toward each other. When the main gear 2 rotates counterclockwise, the left plate 3 and the right plate 4 move away from each other.

[0049] The utility model defines the main gear 2, the left slide plate 31 and the right slide plate 41 as a driving mechanism for driving the left bin plate 3 and the right bin plate 4 to move toward or away from each other.

[0050] 4. Gear avoidance structure

[0051] The top of the main gear 2 of the label printer in the prior art is higher than the bottom edge of the left and right panels 3 and 4, and the left and right slides 31 and 41 will move to the staggered position when they move relative to each other. Therefore, when the left and right panels 3 and 4 move toward each other to the limit position, the distance between them should be at least greater than the diameter of the main gear 2. The minimum distance between the left and right panels 3 and 4 of the label printer in the prior art is 25 mm, while the minimum width of the label card to be printed in the prior art is 15 mm. Therefore, the label printer in the prior art cannot complete the task of printing cards with a width less than 15 mm unless a temporary auxiliary clamping limit component is set in its card compartment 1.

[0052] The gear avoidance structure of the utility model can effectively solve the influence of the main gear 2 on the approach of the left warehouse plate 3 and the right warehouse plate 4 when the left warehouse plate 3 and the right warehouse plate 4 move towards each other.

[0053] The gear avoidance structure comprises a gear avoidance left structure and a gear avoidance right structure.

[0054] 1) The gear avoidance left structure preferably includes a gear avoidance left lower plate 32 and a gear avoidance left upper plate 33 .

[0055] The left lower wheel avoidance plate 32 is arranged at the rear side of the left end of the left slide plate 31 and extends upward. It is preferably an integral structure with the left slide plate 31 and is divided from bottom to top into a lower vertical plate 51, a middle flat plate 52 and an upper vertical plate 53.

[0056] The upper left plate 33 of the wheel avoider is a straight flat plate extending downward from the lower edge of the left plate 3 of the warehouse, and the upper left plate 33 of the wheel avoider corresponds to the lower left plate 32 of the wheel avoider in the upper and lower directions.

[0057] The upper vertical plate 53 of the lower left wheel shunting plate 32 is fixedly connected to the upper left wheel shunting plate 33 (the upper vertical plate 53 of the lower left wheel shunting plate 32 can also be directly fixedly connected to the left warehouse plate 3 without providing the upper left wheel shunting plate 33), and the lower end of the lower vertical plate 51 of the lower left wheel shunting plate 32 is connected to the left slide plate 31.

[0058] Assuming that the length of the middle plate 52 is L, the diameter of the main gear 2 is D, and the minimum distance between the left plate 3 and the right plate 4 when they move toward each other is S, the relationship between them is: 2L+S=D, where S is smaller than D, and at the same time, the bottom surface of the middle plate 52 is higher than the highest point on the main gear 2. In this way, when the left plate 3 moves toward the main gear 2, it can effectively avoid the obstruction of the main gear 2 to the movement of the left plate 3. When the left plate 3 moves toward the main gear 2 to the extreme position, if the left plate 3 and the right plate 4 move toward each other to a contacting and closing state, at least half of the main gear 2 can be hidden under the middle plate 52.

[0059] 2) The gear avoidance right structure preferably includes a gear avoidance right lower plate 42 and a gear avoidance right upper plate 43 .

[0060] The right lower wheel plate 42 is arranged on the front side of the right end of the right skateboard 41 and extends upward. It is preferably an integral structure with the right skateboard 41 and is divided from bottom to top into a lower vertical plate 51, a middle flat plate 52 and an upper vertical plate 53.

[0061] The wheel-avoiding upper right plate 43 is a straight flat plate extending downward from the lower edge of the bin right plate 4 , and the wheel-avoiding upper right plate 43 corresponds to the wheel-avoiding lower right plate 42 in the upper and lower directions.

[0062] The upper vertical plate 53 of the right lower plate 42 of the wheel shunting device is fixedly connected to the right upper plate 43 of the wheel shunting device (the upper vertical plate 53 of the right lower plate 42 of the wheel shunting device can also be directly fixedly connected to the right plate 4 of the warehouse without the right upper plate 43 of the wheel shunting device), and the lower end of the lower vertical plate 51 of the right lower plate 42 of the wheel shunting device is connected to the right slide plate 41.

[0063] The length of the middle plate 52 is greater than or equal to the radius of the main gear 2, and the bottom surface of the middle plate 52 is higher than the highest point on the main gear 2. In this way, when the right plate 4 of the warehouse moves toward the main gear 2, it can effectively avoid the obstruction of the main gear 2 to the movement of the right plate 4 of the warehouse. When the right plate 4 of the warehouse moves to the extreme position toward the main gear 2, at least half of the main gear 2 is hidden under the middle plate 52.

[0064] As far as the left plate 3 and the right plate 4 move toward each other, the above structure solves the obstacle of the main gear 2 to the movement of the left plate 3 and the right plate 4 toward each other, so that the left plate 3 and the right plate 4 can move toward each other to a position where they touch and approach each other.

[0065] 5. Skateboard avoidance structure

[0066] The skateboard avoidance structure includes a skateboard left avoidance structure and a skateboard right avoidance structure, and its function is to prevent the skateboard left guide member 36 and the skateboard right guide member 46 from obstructing the warehouse left plate 3 and the warehouse right plate 4 from moving toward each other and closing when the left skateboard 31 and the right skateboard 41 move.

[0067] 1) The left avoidance structure of the skateboard preferably includes a left lower plate 34 of the skateboard and a left upper plate 35 of the skateboard.

[0068] The lower left plate 34 of the skateboard is a straight flat plate arranged on the front side of the left end of the left skateboard 31 and extending upward. It can be an integrated structure with the left skateboard 31. The upper left plate 35 of the skateboard is a straight flat plate arranged on the lower edge of the left plate 3 of the warehouse and extending downward. The lower left plate 34 of the skateboard corresponds to the upper left plate 35 of the skateboard in upper and lower directions.

[0069] The upper end of the lower left plate 34 of the slide is fixedly connected to the upper left plate 35 of the slide (the upper end of the lower left plate 34 of the slide can also be directly fixedly connected to the left plate 3 of the warehouse without the upper left plate 35 of the slide).

[0070] Providing the lower left plate 34 of the slide plate and the upper left plate 35 of the slide plate can effectively lift the left plate 3 of the warehouse, so that the lower edge of the left plate 3 of the warehouse is higher than the height of the left guide member 36 of the slide plate (especially the lower edge of the rear section of the left plate 3 of the warehouse near the connection with the lower left plate 34 of the slide plate), thereby completely eliminating the obstruction of the left guide member 36 of the slide plate to the movement of the left plate 3 of the warehouse.

[0071] 2) The right avoidance structure of the skateboard preferably includes a right lower plate 44 of the skateboard and a right upper plate 45 of the skateboard.

[0072] The lower right plate 44 of the skateboard is a straight flat plate arranged on the rear side of the right end of the right skateboard 41 and extending upward. It can be an integrated structure with the right skateboard 41. The upper right plate 45 of the skateboard is a straight flat plate arranged on the lower edge of the right plate 4 of the warehouse and extending downward. The lower right plate 44 of the skateboard corresponds to the upper right plate 45 of the skateboard up and down.

[0073] The upper end of the right lower plate 44 of the slide plate is fixedly connected to the right upper plate 45 of the slide plate (the upper end of the right lower plate 44 of the slide plate can also be directly fixedly connected to the warehouse right plate 4 without providing the right upper plate 45 of the slide plate).

[0074] Providing the right lower plate 44 of the slide board and the right upper plate 45 of the slide board can effectively lift the right plate 4 of the warehouse, so that the lower edge of the right plate 4 of the warehouse is higher than the height of the right guide member 46 of the slide board (especially the lower edge of the front section of the right plate 4 of the warehouse near the connection with the right lower plate 44 of the slide board), thereby completely eliminating the obstruction of the right guide member 46 of the slide board to the movement of the right plate 4 of the warehouse.

[0075] 6. Locking and positioning structure

[0076] The function of the locking and positioning structure (also called the fixed adjustment mechanism) is to lock the left plate 3 or the right plate 4 at the set position on the frame plate 12 after the distance between the left plate 3 and the right plate 4 is adjusted to the set distance in order to avoid the change of the distance between the left plate 3 and the right plate 4 caused by slight vibration or unintentional human touch during the printing process (as long as one of the left plate 3 and the right plate 4 is locked, the other one will be locked naturally as well).

[0077] like Figure 6-Figure 14 As shown, the locking and positioning structure is arranged on the outer side of the rear end of the left warehouse plate 3 or the right warehouse plate 4. The utility model is preferably arranged on the outer side of the rear end of the left warehouse plate 3.

[0078] The locking and positioning structure of the utility model has the following two embodiments:

[0079] 1) Hole and slot structure

[0080] It includes a positioning plate 61, a positioning nut 64 and a positioning bolt 63. The positioning plate 61 is arranged at the rear end of the left bin plate 3 and extends horizontally outward, and the rear end of the positioning plate 61 protrudes backward from the rear end edge of the left bin plate 3. A positioning hole 65 is arranged at the rear end of the positioning plate 61, and a base plate positioning groove 62 is arranged on the frame plate 12. The positioning bolt 63 passes through the positioning hole 65 and the base plate positioning groove 62 and is locked with the positioning nut 64 below the frame plate 12, so that the left bin plate 3 can be fixed on the frame plate 12.

[0081] 2) Rotary handle structure

[0082] It is a twist lock, which is arranged on the outer side of the rear end of the left bin plate 3 or the right bin plate 4.

[0083] The screw lock is composed of a positioning shaft 72 and a screw plate 73. The positioning shaft 72 is arranged on the outer side of the rear end of the left warehouse plate 3 or the right warehouse plate 4. The inner end of the screw plate 73 can be rotatably sleeved on the positioning shaft 72. The inner end of the screw plate 73 is provided with a lower protrusion. When the plate handle of the screw plate 73 is screwed upward, the lower protrusion is separated from the contact with the bottom surface of the frame plate 12. When the plate handle of the screw plate 73 is screwed downward, the lower protrusion abuts against the bottom surface of the frame plate 12, thereby fixing the left warehouse plate 3 on the frame plate 12.

[0084] Of course, an open positioning member 71 can also be provided on the frame plate 12, and the screw button plate is placed in the positioning member 71. When locked, the lower protrusion abuts against the bottom surface of the positioning member 71. The positioning member 71 can cover the lower protrusion on the screw button plate, which is conducive to an aesthetically pleasing layout.

Claims

1. An adjustment mechanism for a card bin plate of a label printer, comprising a card bin (1) for stacking a plurality of cards to be printed, a left bin plate (3) and a right bin plate (4) for preventing the cards to be printed from deviating and being movable relative to or opposite to each other under the drive of a driving mechanism, wherein the driving mechanism comprises a main gear (2) disposed on a frame plate (12) below the card bin (1), a left slide plate (31) fixedly connected to the left bin plate (3) and perpendicular to each other, and a right slide plate (41) fixedly connected to the right bin plate (4) and perpendicular to each other, the left slide plate (31) and the right slide plate (41) being arranged opposite to each other in front and back, the main gear (2) being disposed between the left slide plate (31) and the right slide plate (41) and being externally meshed with racks on the left slide plate (31) and the right slide plate (41), respectively, and characterized in that: A gear avoidance structure capable of avoiding the main gear (2) is provided at the lower ends of the left warehouse plate (3) and the right warehouse plate (4), and the gear avoidance structure enables the left warehouse plate (3) and the right warehouse plate (4) to move towards each other to a minimum distance therebetween, and the minimum distance therebetween is smaller than the diameter of the main gear (2); The gear avoidance structure comprises a gear avoidance left structure and a gear avoidance right structure. The gear avoidance left structure is a gear avoidance left lower plate (32) arranged at the rear side of the left end of the left slide plate (31) and extending upwards, and the gear avoidance right structure is a gear avoidance right lower plate (42) arranged at the front side of the right end of the right slide plate (41) and extending upwards. The gear avoidance left lower plate (32) and the gear avoidance right lower plate (42) have the same structure, and are divided from bottom to top into a lower vertical plate (51), a middle flat plate (52) and an upper vertical plate (53). The lower end of the lower vertical plate (51) is connected to the corresponding left slide plate (31) or right slide plate (41), and the upper end of the upper vertical plate (53) is connected to the corresponding warehouse left plate (3) or warehouse right plate (4), and the bottom surface of the middle flat plate (52) is higher than the highest point on the main gear (2).

2. The card bin plate adjustment mechanism of the label printer according to claim 1, characterized in that: A left upper plate (33) for avoiding wheels extending and protruding downward is provided at the lower edge of the left plate (3) of the warehouse, and a right upper plate (43) for avoiding wheels extending and protruding downward is provided at the lower edge of the right plate (4) of the warehouse; an upper vertical plate (53) of the left lower plate (32) for avoiding wheels is fixedly connected to the left upper plate (33) for avoiding wheels, and an upper vertical plate (53) of the right lower plate (42) for avoiding wheels is fixedly connected to the right upper plate (43) for avoiding wheels.

3. The card bin plate adjustment mechanism of the label printer according to claim 2, characterized in that: A fixed adjustment mechanism capable of locking the left bin plate (3) and the right bin plate (4) on the frame is provided on the outer side of the rear end of the left bin plate (3) or the right bin plate (4).

4. The card bin plate adjustment mechanism of the label printer according to claim 3, characterized in that: The fixed adjustment mechanism comprises a positioning plate (61) which is arranged at the rear end of the left bin plate (3) or the right bin plate (4) and extends horizontally outward, a positioning nut (64) and a positioning bolt (63); the rear end of the positioning plate (61) protrudes backwards from the rear end edge of the corresponding left bin plate (3) or the right bin plate (4); a positioning hole (65) is provided at the rear end of the positioning plate (61); a base plate positioning groove (62) is provided on the frame plate (12); and the positioning bolt (63) passes through the positioning hole (65) and the base plate positioning groove (62) and is locked with the positioning nut (64) below the frame plate (12).

5. The card bin plate adjustment mechanism of the label printer according to claim 3, characterized in that: The fixed position adjustment mechanism comprises a rotary lock member arranged on the outer side of the rear end of the left bin plate (3) or the right bin plate (4), the rotary lock member comprising a positioning shaft (72) and a rotary plate (73), the positioning shaft (72) being arranged on the outer side of the rear end of the left bin plate (3) or the right bin plate (4), the rotary plate (73) being rotatably sleeved on the positioning shaft (72), the inner end of the rotary plate (73) being provided with a lower protrusion, the plate handle of the rotary plate (73) being screwed upward, the lower protrusion being separated from contact with the frame plate (12), the plate handle of the rotary plate (73) being screwed downward, the lower protrusion being in contact with the bottom surface of the frame plate (12).

6. The card bin plate adjustment mechanism of the label printer according to any one of claims 1 to 5, characterized in that: The adjustment mechanism also includes a left avoidance structure of a slide plate and a right avoidance structure of a slide plate. The left avoidance structure of the slide plate is a left lower plate (34) of the slide plate which is arranged at the front side of the left end of the left slide plate (31) and extends upwards; the right avoidance structure of the slide plate is a right lower plate (44) of the slide plate which is arranged at the rear side of the right end of the right slide plate (41) and extends upwards; the left lower plate (34) of the slide plate and the right lower plate (44) of the slide plate are both straight plates, and their upper ends are connected to the corresponding warehouse left plate (3) or warehouse right plate (4); the height of the lower edge of the rear side section of the warehouse left plate (3) near the connection with the left lower plate (34) of the slide plate is higher than the height of the left guide member (36) of the slide plate, and the height of the lower edge of the front side section of the warehouse right plate (4) near the connection with the right lower plate (44) of the slide plate is higher than the height of the right guide member (46) of the slide plate.

7. The card bin plate adjustment mechanism of the label printer according to claim 6, characterized in that: A left upper plate (35) of a slide plate extending downward and protruding is provided at the lower edge of the left plate (3) of the warehouse, and a right upper plate (45) of a slide plate extending downward and protruding is provided at the lower edge of the right plate (4) of the warehouse; the upper end of the left lower plate (34) of the slide plate is fixedly connected to the left upper plate (35) of the slide plate, and the upper end of the right lower plate (44) of the slide plate is fixedly connected to the right upper plate (45) of the slide plate.

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