Size-adaptive label stock bin device

Abstract

The utility model relates to the technical field of automatic label feeding, and discloses a size self-adaptive label stock bin device which comprises a stock bin mounting bottom plate assembly, a label storage assembly, two groups of symmetrical X-direction and Y-direction adjusting assemblies and a Y-direction auxiliary positioning mechanism, and the stock bin mounting bottom plate assembly comprises an X-direction adjusting guide rail assembly and an X-direction two-way graduated scale. Sliding locking in the X direction and visual adjustment of the size are achieved; the X-direction and Y-direction adjusting assembly completes label X-direction and Y-direction positioning through an X-direction sliding base, a Y-direction adjusting guide rail assembly and a Y-direction bidirectional calibrated scale. The label storage assembly provides Z-direction positioning and Y-direction auxiliary positioning mechanisms to enhance the adaptability, the device is further provided with a material shortage signal detection mechanism, the device can rapidly adapt to labels of different sizes, adjustment is convenient and fast, positioning is accurate, and the remodeling efficiency and the production stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic label feeding, in particular to a size-adaptive label silo device. Background Art

[0002] In the field of industrial automation, fully automatic label loading equipment is widely used in the packaging processes of food, medicine, electronics and other industries. Its core function is to realize the automatic storage, positioning and transportation of labels to improve production efficiency and reduce manual intervention.

[0003] However, the silo design of existing label feeding equipment has significant limitations: Most mainstream label silos currently utilize a "single-item, single-bin" or "small-size adjustment" structure. This means that each silo typically accommodates only one fixed-size label or can only be adjusted within a very narrow size range. This design struggles to meet the diverse label specifications required in modern production. In practice, labels are often made of color-printed oil-coated paper, which has a wide range of sizes and frequently changes between sizes.

[0004] When changing labels of different sizes, traditional silos often require disassembly, component replacement, or recalibration. This is cumbersome and time-consuming, seriously affecting the efficiency of production line changeovers. Furthermore, some adjustable silos lack precise dimensional positioning mechanisms and stable locking structures, which can lead to positioning deviations after adjustment. This can cause problems such as skew and jamming during label delivery, affecting the stability of subsequent processes. Utility Model Content

[0005] The utility model provides a size-adaptive label hopper device, which solves the technical problems in the prior art of inconvenient hopper adjustment, low conversion efficiency, and difficulty in achieving rapid adaptive adjustment to match labels of different sizes.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions: a size-adaptive label hopper device, comprising: a hopper mounting base plate assembly, which includes a mounting base plate, an X-axis adjustment guide rail assembly, and an X-axis bidirectional scale; the X-axis adjustment guide rail assembly is provided in two groups, and the two groups of X-axis adjustment guide rail assemblies are arranged parallel to the mounting base plate along the X-axis extension of the mounting base plate; the X-axis adjustment guide rail assembly has a sliding locking function; the X-axis bidirectional scale is embedded in the mounting base plate and parallel to the direction of the X-axis adjustment guide rail assembly;

[0007] The label storage assembly includes a fixed plate fixedly connected to the mounting base plate, a Z-direction support column vertically mounted on the fixed plate, and a Z-direction positioning plate supported by the Z-direction support column. The Z-direction positioning plate is used to carry the label and achieve Z-direction positioning.

[0008] An XY adjustment assembly is provided with two groups, and the two groups of XY adjustment assemblies are symmetrically arranged with the X-direction center line of the mounting base as the symmetry axis, comprising: an X-direction sliding base, a Y-direction adjustment guide rail assembly, a Y-direction bidirectional scale, an X-direction positioning member, and a Y-direction positioning member. The X-direction sliding base is slidably matched with the two groups of X-direction adjustment guide rail assemblies, and the Y-direction adjustment guide rail assembly is provided with two groups and is symmetrically arranged on the X-direction sliding base along the Y-direction center line of the X-direction sliding base as the symmetry axis. The X-direction positioning member is fixed to the X-direction sliding base through an X-direction support column. The two Y-direction positioning members are respectively slidably matched with the two groups of Y-direction adjustment guide rail assemblies, and the Y-direction adjustment guide rail assembly has a sliding locking function. The Y-direction bidirectional scale is embedded and mounted on the X-direction positioning member and is parallel to the direction of the Y-direction adjustment guide rail assembly.

[0009] The Y-direction auxiliary positioning mechanism is connected to the label storage component and can adjust the position along the Y-direction of the fixed large plate.

[0010] Furthermore, the present application also proposes that the X-direction adjustment guide rail assembly includes a first guide rail and a first slider, the Y-direction adjustment guide rail assembly includes a second guide rail and a second slider, and the two ends of the X-direction sliding base along the Y direction of the mounting substrate are respectively fixed on the first sliders of the two groups of X-direction adjustment guide rail assemblies; the Y-direction adjustment guide rail assembly includes a second guide rail and a second slider, and the Y-direction positioning member is fixed on the second slider.

[0011] Furthermore, the present application also proposes that the silo mounting base plate assembly also includes a material shortage signal detection mechanism, an empty slot is opened in the center of the mounting base plate, and the detection path of the material shortage signal detection mechanism passes through the circular holes on the fixed large plate and the Z-direction positioning large plate.

[0012] Furthermore, the present application also proposes that the height of the Z-direction support column is set so that the upper surface of the Z-direction positioning plate is higher than the upper surface of the first guide rail of the X-direction adjustment guide rail assembly.

[0013] Furthermore, the present application also proposes that the bottom of the X-direction positioning member is provided with a raised flange parallel to the X-direction adjustment guide rail assembly and extending toward the X-direction center line of the mounting base plate.

[0014] Furthermore, the present application also proposes that an avoidance notch is provided at the bottom of the Y-direction positioning member to avoid interference with the raised flange of the X-direction positioning member.

[0015] Furthermore, the present application also proposes that the first slider is provided with a first locking bolt that passes through the first slider and extends to the surface of the first guide rail; the second slider is provided with a second locking bolt that passes through the second slider and extends to the surface of the second guide rail.

[0016] Furthermore, the present application also proposes that the Y-direction auxiliary positioning mechanism includes a mounting seat with a long mounting hole at the bottom and a Z-direction round rod, and the Z-direction positioning plate has a threaded hole for fixing the mounting seat.

[0017] Furthermore, the present application also proposes that the bottom surface of the raised flange is flush with the bottom surface of the Y-direction positioning member and is higher than the upper surface of the Z-direction positioning plate.

[0018] Furthermore, the present application also proposes that the material shortage signal detection mechanism is a photoelectric sensor.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model provides X- and Y-adjustment guide rail assemblies with sliding locking functions, and cooperates with a two-way scale to achieve precise adaptive adjustment of label size. It can quickly adapt to labels of different specifications without disassembling components, greatly improving the changeover efficiency; the two sets of XY adjustment assemblies are symmetrically arranged, combined with the Y-axis auxiliary positioning mechanism to ensure stable label positioning and avoid skew and jamming in transportation; the Z-axis support column design makes the label bearing surface higher than the guide rail, and cooperates with the raised flange and avoidance notch structure to prevent label clamping; the lack of material signal detection mechanism can monitor the label inventory in real time. The overall structure takes into account both adjustment flexibility and positioning reliability, effectively meeting the needs of automated loading of labels of multiple specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a three-dimensional diagram of the label silo device of the present invention;

[0023] Figure 2 This is a front view of the label silo device of the utility model;

[0024] Figure 3 This is a side view of the label silo device of the present invention;

[0025] Figure 4 This is a three-dimensional diagram of the base plate assembly of the label silo device of the utility model;

[0026] Figure 5 This is a three-dimensional diagram of the label storage assembly of the label silo device of the present invention;

[0027] Figure 6This is a three-dimensional diagram of the XY adjustment assembly of the label hopper device of the present invention;

[0028] Figure 7 This is an enlarged structural diagram of the raised flange and the avoidance gap in the label hopper device of the present invention.

[0029] Reference numerals: 1, silo mounting base plate assembly; 11, mounting base plate; 12, X-axis adjustment guide rail assembly; 121, first guide rail; 122, first slider; 123, first locking bolt; 13, X-axis bidirectional scale; 14, material shortage signal detection mechanism;

[0030] 2. Label storage assembly; 21. Fixed large plate; 22. Z-axis support column; 23. Z-axis positioning large plate;

[0031] 3. XY adjustment assembly; 31. X-axis sliding base; 32. Y-axis adjustment guide rail assembly; 321. Second guide rail; 322. Second slider; 323. Second locking bolt; 33. Y-axis bidirectional scale; 34. X-axis positioning member; 341. X-axis support column; 342. Raised flange; 35. Y-axis positioning member; 351. Avoidance gap;

[0032] 4. Y-axis auxiliary positioning mechanism; 41. Mounting seat; 42. Z-axis round rod. DETAILED DESCRIPTION

[0033] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] In existing technologies, label feeding equipment in the industrial automation field generally suffers from poor silo adaptability. Traditional label silos utilize fixed-size designs or limited adjustment ranges, making them difficult to accommodate the demands of switching between multiple label sizes. Changes in label size require operators to disassemble components or recalibrate equipment, resulting in extended production line downtime. Existing adjustable silos lack precise positioning mechanisms and reliable locking mechanisms, making adjustments prone to positioning deviations, which can cause label jamming during transport and disrupt the continuity of the packaging process.

[0035] like Figure 1-6As shown, the present application proposes a size-adaptive label silo device, comprising: a silo mounting base plate assembly 1, which includes a mounting base 11, an X-axis adjustment guide rail assembly 12 and an X-axis bidirectional scale 13, wherein the X-axis adjustment guide rail assembly 12 is provided with two groups, and the two groups of X-axis adjustment guide rail assemblies 12 are arranged parallel to the mounting base 11 along the X-axis extension of the mounting base 11, and the X-axis adjustment guide rail assembly 12 has a sliding locking function, and the X-axis bidirectional scale 13 is embedded in the mounting base 11 and is parallel to the direction of the X-axis adjustment guide rail assembly 12. The assembly forms an X-axis movement reference to ensure the synchronous movement of the XY-axis adjustment assemblies 3 on both sides.

[0036] The label storage assembly 2 comprises a fixed plate 21 fixedly connected to the mounting base 11, Z-axis support columns 22 mounted perpendicularly to the fixed plate 21, and a Z-axis positioning plate 23 supported by the Z-axis support columns 22. The Z-axis positioning plate 23 is used to carry labels and position them in the Z direction. The Z-axis support columns 22 can be implemented as threaded metal struts, with the support height adjustable by adjusting the nuts. This assembly establishes a vertical positioning reference, ensuring the stability of label stacking.

[0037] The XY-axis adjustment assembly 3 is provided with two groups. The two groups of XY-axis adjustment assemblies 3 are symmetrically arranged with the X-axis center line of the mounting base 11 as the symmetry axis, and include: an X-axis sliding base 31, a Y-axis adjustment guide rail assembly 32, a Y-axis bidirectional scale 33, an X-axis positioning member 34 and a Y-axis positioning member 35. The X-axis sliding base 31 slides with the two groups of X-axis adjustment guide rail assemblies 12. The Y-axis adjustment guide rail assembly 32 is provided with two groups and is symmetrically arranged on the X-axis sliding base 31 along the Y-axis center line of the X-axis sliding base 31 as the symmetry axis. The X-axis positioning member 34 is fixed to the X-axis sliding base 31 by an X-axis support column 341. The two Y-axis positioning members 35 slide with the two groups of Y-axis adjustment guide rail assemblies 32 respectively. The Y-axis adjustment guide rail assembly 32 has a sliding locking function. The Y-axis bidirectional scale 33 is embedded and installed on the X-axis positioning member 34 and is parallel to the direction of the Y-axis adjustment guide rail assembly 32.

[0038] The X-axis bidirectional scale 13 and the Y-axis bidirectional scale 33 can be implemented as a double-sided metal ruler, with the scale direction parallel to the guide rails of the X-axis adjustment guide rail assembly 12 or the Y-axis adjustment guide rail assembly 32. This structure enables visual control of the X-axis and Y-axis adjustment amounts, avoiding visual errors.

[0039] The Y-direction auxiliary positioning mechanism 4 is connected to the label storage assembly 2 and can adjust its position along the Y-direction of the fixed large plate 21 to achieve Y-direction supplementary positioning for labels with longer lengths.

[0040] The embodiment of the present application adopts a split XY adjustment component 3 to allow independent adjustment of the dimensions in each direction, significantly improving the size adaptation range. Through the above technical solution, the present application realizes rapid size adaptation of the label hopper, and the operator can complete the XY size adjustment without removing the components. The use of a bidirectional scale and a locking function ensures the positioning repeatability after each adjustment. The symmetrical adjustment mechanism effectively disperses the positioning stress and avoids the phenomenon of label stacking tilting. The device is compatible with label specifications of different materials and thicknesses, significantly shortening the production line changeover time and improving equipment utilization.

[0041] In one embodiment of the present application, the X-axis adjustment guide rail assembly 12 includes a first guide rail 121 and a first slider 122, the Y-axis adjustment guide rail assembly 32 includes a second guide rail 321 and a second slider 322, and the X-axis sliding base 31 is respectively fixed on the first slider 122 of the two groups of X-axis adjustment guide rail assemblies 12 at both ends along the Y direction of the mounting substrate 11; the Y-axis adjustment guide rail assembly 32 includes a second guide rail 321 and a second slider 322, and the Y-axis positioning member 35 is fixed on the second slider 322.

[0042] Two sets of X-axis adjustment guide rail assemblies 12 are arranged in parallel on both sides of the mounting base 11. When the first slider 122 moves in the X-axis along the first guide rail 121, it drives the X-axis sliding base 31 to move as a whole. The X-axis sliding base 31 eliminates the deflection torque generated by unilateral drive through a double-sided fixing method, so that the base always maintains a parallel movement state. The Y-axis adjustment guide rail assemblies 32 are symmetrically distributed on both sides of the X-axis sliding base 31. When the second slider 322 moves in the Y-axis along the second guide rail 321, it drives the Y-axis positioning member 35 to form a symmetrical clamping action. The first guide rail 121 and the second guide rail 321 are arranged orthogonally to form a plane rectangular coordinate system motion system. The first slider 122 and the second slider 322 are both equipped with a locking mechanism, which can be kept in position by mechanical locking after adjustment.

[0043] Furthermore, the first slider 122 is provided with a first locking bolt 123 that passes through the first slider 122 and extends to the surface of the first guide rail 121; the second slider 322 is provided with a second locking bolt 323 that passes through the second slider 322 and extends to the surface of the second guide rail 321.

[0044] When the X-axis sliding base 31 moves to the target position along the X-axis adjustment rail, the operator tightens the first locking bolt 123 so that its end directly presses against the upper surface of the first guide rail 121. The axial pressure generated by the bolt then causes the sliding pair between the slider and the guide rail to enter a static friction state. Similarly, when the Y-axis positioning member 35 moves into position along the Y-axis adjustment rail, the second locking bolt 323 secures the second slider 322 to the guide rail through vertical pressure. This dual locking mechanism creates a rigid constraint in the orthogonal X and Y directions, effectively suppressing even minor displacements caused by vibration or external impact during operation.

[0045] In one embodiment of the present application, the silo mounting base plate assembly 1 further includes a material shortage signal detection mechanism 14. A slot is provided in the center of the mounting base plate 11, and a detection path of the material shortage signal detection mechanism 14 passes through circular holes in the fixed plate 21 and the Z-direction positioning plate 23. Furthermore, the material shortage signal detection mechanism is a photoelectric sensor.

[0046] The out-of-stock signal detection mechanism 14 is a sensor device used to monitor the state of label stacking. Specifically, it can be implemented using a photoelectric sensor, which determines the label inventory by observing changes in the optical path between the transmitter and receiver. The central slot of the mounting substrate 11 is located at the center of the mounting substrate 11 and can be implemented using a rectangular or circular through-hole, providing an unobstructed passage for the detection path. The circular holes on the fixed plate 21 and the Z-positioning plate 23 are coaxially arranged light-transmitting holes, ensuring that the detection path vertically extends through the label stacking area.

[0047] In one embodiment of the present application, the height of the Z-axis support column 22 is set so that the upper surface of the Z-axis positioning plate 23 is higher than the upper surface of the first guide rail 121 of the X-axis adjustment guide rail assembly 12. The Z-axis support column 22 is a column structure vertically mounted on the fixed plate 21. Specifically, it can be made of metal and processed into a cylindrical or rectangular shape. It is fixed to the surface of the fixed plate 21 by threading or welding. Its height is determined based on the thickness of the label and the size of the guide rail assembly. It is used to support the Z-axis positioning plate 23.

[0048] In one embodiment of the present application, a raised flange 342 is provided at the bottom of the X-axis positioning member 34, parallel to the X-axis adjustment guide rail assembly 12 and extending toward the X-axis centerline of the mounting base plate 11. The bottom surface of the raised flange 342 is flush with the bottom surface of the Y-axis positioning member 35 and higher than the upper surface of the Z-axis positioning plate 23. The raised flange 342 refers to a plate-like structure extending from the bottom edge of the X-axis positioning member 34 along the X-axis centerline, and can be specifically implemented by stamping or welding. The two sides of the bottom surface of the stacked labels are located above the two raised flanges 342 to prevent the bottom labels from entering the gap at the bottom and prevent the labels from being pinched.

[0049] The extension toward the X-direction center line of the mounting substrate 11 refers to the horizontal extension of the raised flange 342 from the edge of the X-direction positioning member 34 toward the device symmetry axis.

[0050] Furthermore, a clearance notch 351 is provided at the bottom of the Y-axis positioning member 35 to prevent interference with the raised flange 342 of the X-axis positioning member 34. The clearance notch 351 is a recessed structure machined into the bottom surface of the Y-axis positioning member 35. Specifically, it can be implemented as a rectangular notch, with its depth and width determined by the width of the raised flange 342 of the X-axis positioning member 34. The opening direction of the clearance notch 351 is orthogonal to the extension direction of the raised flange 342, and the inner wall of the notch maintains a clearance fit with the sidewalls of the raised flange 342. This notch eliminates the risk of contact with adjacent components through spatial avoidance, preventing interference.

[0051] In one embodiment of the present application, the Y-direction auxiliary positioning mechanism 4 includes a mounting seat 41 with a long mounting hole at the bottom and a Z-direction round rod 42 , and the label positioning plate has threaded holes for fixing the mounting seat 41 .

[0052] The elongated mounting hole is a continuous slot extending in the Y direction along the bottom of mounting base 41. Specifically, it can be implemented as a rectangular slot with a width matching the bolt diameter. Its length covers the maximum Y-axis travel required for the label positioning plate. This structure enables mounting base 41 to slide continuously in the Y direction, allowing for position adjustment without disassembly.

[0053] The threaded hole refers to a through hole that penetrates the label positioning plate, and its position intersects perpendicularly with the axis of the long strip mounting hole. This structure is achieved by screwing the bolt through the long strip mounting hole and then into the threaded hole to achieve the rigid fixation of the mounting seat 41 in the selected position.

[0054] The Z-axis rod 42 is a cylindrical positioning component perpendicular to the mounting base 41, with its axis perpendicular to the plane of the label positioning plate. This structure forms a lateral positioning reference surface for label stacking, maintaining Z-axis positioning accuracy during Y-axis adjustments and preventing stacked labels from shifting.

[0055] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A size-adaptive label silo device, characterized in that: include: A silo mounting base plate assembly (1) comprises a mounting base plate (11), an X-direction adjustment guide rail assembly (12) and an X-direction bidirectional scale (13), wherein the X-direction adjustment guide rail assembly (12) is provided with two groups, and the two groups of X-direction adjustment guide rail assemblies (12) are arranged on the mounting base plate (11) in parallel along the X-direction extension of the mounting base plate (11), the X-direction adjustment guide rail assembly (12) has a sliding locking function, and the X-direction bidirectional scale (13) is embedded in the mounting base plate (11) and is parallel to the direction of the X-direction adjustment guide rail assembly (12); A label storage assembly (2) includes a fixed large plate (21) fixedly connected to a mounting base plate (11), a Z-direction support column (22) vertically mounted on the fixed large plate (21), and a Z-direction positioning large plate (23) supported by the Z-direction support column (22), wherein the Z-direction positioning large plate (23) is used to carry labels and achieve Z-direction positioning; The XY-direction adjustment assembly (3) is provided with two groups. The two groups of XY-direction adjustment assemblies (3) are symmetrically arranged with the X-direction center line of the mounting base (11) as the symmetry axis, and include: an X-direction sliding base (31), a Y-direction adjustment guide rail assembly (32), a Y-direction bidirectional scale (33), an X-direction positioning member (34) and a Y-direction positioning member (35). The X-direction sliding base (31) is slidably matched with the two groups of X-direction adjustment guide rail assemblies (12). The Y-direction adjustment guide rail assembly (32) is provided with two groups and is arranged along the X-direction sliding base. (31) The center line of the Y direction is symmetrically arranged on the X direction sliding base (31) as the symmetry axis, the X direction positioning member (34) is fixed to the X direction sliding base (31) through the X direction support column (341), the two Y direction positioning members (35) are respectively slidably matched with the two groups of Y direction adjustment guide rail assemblies (32), the Y direction adjustment guide rail assembly (32) has a sliding locking function, and the Y direction bidirectional scale (33) is embedded and installed on the X direction positioning member (34) and is parallel to the direction of the Y direction adjustment guide rail assembly (32); The Y-direction auxiliary positioning mechanism (4) is connected to the label storage assembly (2) and can adjust the position along the Y-direction of the fixed large plate (21).

2. The size-adaptive label hopper device according to claim 1, characterized in that: The X-direction adjustment guide rail assembly (12) includes a first guide rail (121) and a first slider (122); the Y-direction adjustment guide rail assembly (32) includes a second guide rail (321) and a second slider (322); the X-direction sliding base (31) is fixed on the first sliders (122) of the two sets of X-direction adjustment guide rail assemblies (12) at both ends along the Y direction of the mounting substrate (11); the Y-direction adjustment guide rail assembly (32) includes a second guide rail (321) and a second slider (322); the Y-direction positioning member (35) is fixed on the second slider (322).

3. The size-adaptive label hopper device according to claim 1, characterized in that: The silo mounting base plate assembly (1) further comprises a material shortage signal detection mechanism (14). A slot is provided in the center of the mounting base plate (11). The detection path of the material shortage signal detection mechanism (14) passes through the circular holes on the fixed large plate (21) and the Z-direction positioning large plate (23).

4. The size-adaptive label hopper device according to claim 2, characterized in that: The height of the Z-direction support column (22) is set so that the upper surface of the Z-direction positioning plate (23) is higher than the upper surface of the first guide rail (121) of the X-direction adjustment guide rail assembly (12).

5. The size-adaptive label hopper device according to claim 4, characterized in that: The bottom of the X-direction positioning member (34) is provided with a raised flange (342) parallel to the X-direction adjustment guide rail assembly (12) and extending toward the X-direction center line of the mounting base plate (11).

6. The size-adaptive label hopper device according to claim 4, characterized in that: The bottom of the Y-direction positioning member (35) is provided with an avoidance notch (351) for avoiding interference with the raised flange (342) of the X-direction positioning member (34).

7. The size-adaptive label hopper device according to claim 2, characterized in that: The first slider (122) is provided with a first locking bolt (123) that passes through the first slider (122) and extends to the surface of the first guide rail (121); the second slider (322) is provided with a second locking bolt (323) that passes through the second slider (322) and extends to the surface of the second guide rail (321).

8. The size-adaptive label hopper device according to claim 1, characterized in that: The Y-direction auxiliary positioning mechanism (4) comprises a mounting seat (41) with a long mounting hole at the bottom and a Z-direction round rod (42), and the Z-direction positioning large plate (23) is provided with a threaded hole for fixing the mounting seat (41).

9. The size-adaptive label hopper device according to claim 5, characterized in that: The bottom surface of the raised flange (342) is flush with the bottom surface of the Y-direction positioning member (35) and is higher than the upper surface of the Z-direction positioning plate (23).

10. The size-adaptive label hopper device according to claim 3, characterized in that: The material shortage signal detection mechanism (14) is a photoelectric sensor.

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