Labeling machine capable of accurately identifying color cards for dairy product workshop

Abstract

The utility model discloses a labeling machine for accurately identifying a color card in a dairy product workshop, which comprises a rack, and the rack is sequentially provided with a first clamping component, a color code electric eye, a second clamping component and a central column from top to bottom; an up-and-down adjusting assembly, a front-and-back adjusting assembly and a fine adjusting assembly are sequentially arranged between the rack and the color code electric eye, the up-and-down adjusting assembly, the front-and-back adjusting assembly and the fine adjusting assembly are all used for adjusting the position of the color code electric eye, and the color code electric eye is used for recognizing a color card of a packaging bag; the second clamping assembly comprises two oppositely-arranged clamping plates, the ends of the clamping plates are slidably connected with extension plates, and the extension plates and the clamping plates jointly clamp a packaging bag. The position of the color code electric eye is adjusted in a multi-dimensional mode, the first clamping assembly and the second clamping assembly are matched, and the problems that the size of a packaging bag is not matched with the size of a center column, and when the packaging bag bulges, the color code electric eye cannot accurately recognize a color card can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sleeve labeler, specifically a sleeve labeler for accurate identification of color card in dairy workshop. BACKGROUND

[0002] The sleeve labeler plays an extremely important role in the packaging production process, which is responsible for accurately sleeving the label printed with product information, trademarks and decorative patterns on the surface of the packaging bottle. It not only can improve the appearance of the product, but also can play an important role in protecting the product and conveying product information.

[0003] In order to avoid the high equipment cost and complex maintenance and management work caused by purchasing multiple sleeve labelers of different specifications, the production line often tends to use the same sleeve labeler to sleeve the packaging bottles of different sizes. Since packaging bottles of different sizes need to match packaging bags of different specifications, when the same sleeve labeler is used, the adaptability problem between the packaging bag and the center column is highlighted.

[0004] When the size of the packaging bag does not match the center column, for example, the packaging bag is too large and the center column is relatively thin. In the sleeve labeling process, the packaging bag cannot closely fit the center column, which is easy to form a gap inside, and further leads to the occurrence of packaging bag bulging phenomenon. Once the packaging bag bulges, the flatness of its surface is destroyed, the position, angle and relative distance between the color label and the inductor will change. This makes it difficult for the color label inductor to accurately capture the feature information of the color label, and the color label on the packaging bag cannot be identified, which further leads to deviation of the sleeve labeling work, and the label may be sleeved off-center, skewed or even unable to be sleeved, which seriously affects the packaging quality and production efficiency of the product, and ultimately may lead to the increase of product scrap rate and the increase of production cost. UTILITY MODEL CONTENTS

[0005] In view of the above defects, the utility model provides a sleeve labeler for accurate identification of color card in dairy workshop, which can solve the problem that the color label inductor cannot accurately identify the color card when the size of the packaging bag does not match the center column and the packaging bag bulges, by adjusting the position of the color label inductor in multiple dimensions and cooperating with the first clamping assembly and the second clamping assembly.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A sleeve labeler for accurate identification of color card in dairy workshop, comprising a rack, the rack is sequentially provided with a first clamping assembly, a color label inductor, a second clamping assembly and a center column from top to bottom;

[0008] An up-down adjustment component, a front-back adjustment component, and a fine adjustment component are sequentially provided between the frame and the color mark electric eye. The up-down adjustment component, the front-back adjustment component, and the fine adjustment component are all used to adjust the position of the color mark electric eye. The color mark electric eye is used to identify the color card of the packaging bag.

[0009] The second clamping assembly includes two clamping plates arranged opposite to each other, the ends of the clamping plates are slidably connected to extension plates, and the extension plates and the clamping plates clamp the packaging bag together.

[0010] The first clamping assembly includes two clamping rollers arranged opposite to each other, the ends of the clamping rollers are rotatably mounted on the frame, and the two clamping rollers are used for rolling and clamping the packaging bag.

[0011] The clamping plate includes a clamping mounting portion, a clamping connection portion, and a clamping portion, wherein the clamping mounting portion is slidably mounted on the frame, an end portion of the clamping mounting portion is fixedly connected to the top of the clamping connection portion, and a bottom portion of the clamping connection portion is fixedly connected to the rear end of the clamping portion, and a length direction of the clamping portion is a front-to-back direction;

[0012] The heights of the two clamping connection parts are inconsistent.

[0013] The extension plate includes an extension connection portion and an extension portion. The extension connection portion is slidably sleeved on the clamping portion. The bottom of the extension connection portion is fixedly connected to the extension portion. The length direction of the extension portion is consistent with the length direction of the clamping portion.

[0014] The up and down adjustment assembly includes a mounting plate, a vertical adjustment rod and a first adjustment plate. The mounting plate is vertically mounted on the frame. The mounting plate is provided with a plurality of vertical adjustment rods. The vertical adjustment rods are slidably connected to the first adjustment plate. The side wall of the first adjustment plate is threadedly connected with a first locking piece. The end of the first locking piece is threaded through the first adjustment plate and abuts against the vertical adjustment rod.

[0015] The front and rear adjustment assembly includes a front and rear adjustment rod and a second adjustment plate. The front and rear adjustment rod is provided on the front side of the first adjustment plate. The front and rear adjustment rod is slidably connected to the second adjustment plate. The side wall of the second adjustment plate is threadedly connected to a second locking piece. The end of the second locking piece is threaded through the second adjustment plate and abuts against the front and rear adjustment rod.

[0016] The fine adjustment assembly includes a third adjustment plate, which includes a vertical adjustment part and a horizontal adjustment part. The top of the vertical adjustment part is vertically connected to the rear end of the horizontal adjustment part. The vertical adjustment part is slidably connected to the side wall of the second adjustment plate, and the horizontal adjustment part is slidably connected to the color standard electric eye along the left and right directions.

[0017] The vertical adjustment portion is provided with a vertical adjustment hole, the left and right ends of the vertical adjustment hole pass through the vertical adjustment portion, and the vertical adjustment portion is horizontally connected to the second adjustment plate through a first screw;

[0018] The horizontal adjustment part is provided with left and right adjustment holes, which pass through the top and bottom of the horizontal adjustment part. The horizontal adjustment part is vertically connected to the color mark electric eye through a second screw.

[0019] The top of the central column contracts upward to form a straight line in the front-to-back direction.

[0020] The technical solution of the utility model may have the following beneficial effects:

[0021] 1. By adjusting the position of the color mark electric eye in multiple dimensions and coordinating with the first clamping component and the second clamping component, the problem of the color mark electric eye being unable to accurately identify the color card when the packaging bag size does not match the center column and the packaging bag bulges can be solved.

[0022] 2. Since the clamping rollers are rotatably mounted on the frame, they can automatically adjust their rotational state according to the moving speed of the packaging bag and the external force it is subjected to, and adaptively match the conveying rhythm of the packaging bag, so that packaging bags of different thicknesses and materials can be clamped and conveyed smoothly, greatly reducing the problem of unstable conveying caused by differences in the texture of the packaging bags, improving the compatibility of the labeling machine with various types of packaging bags, and ensuring that each packaging bag can smoothly enter the correct labeling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a labeling machine according to one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of an up-down adjustment component and a front-back adjustment component in one embodiment of the present utility model;

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0026] Among them, 1. frame; 2. first clamping assembly; 21. clamping roller; 3. color code electric eye; 31. up and down adjustment assembly; 311. mounting plate; 312. vertical adjustment rod; 313. first adjustment plate; 314. first locking piece; 32. front and back adjustment assembly; 321. front and back adjustment rod; 322. second adjustment plate; 323. second locking piece; 33. fine adjustment assembly; 331. third adjustment plate; 332. vertical adjustment part; 333. horizontal adjustment part; 334. vertical adjustment hole; 335. left and right adjustment hole; 336. first screw; 337. second screw; 4. second clamping assembly; 41. clamping plate; 42. clamping connection part; 43. clamping part; 5. center column; 6. extension plate; 61. extension connection part; 62. extension part. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0028] In the description of the present invention, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means more than two.

[0030] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "installation," "splicing," and "connection" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] The following combination Figures 1 to 3 , describing an embodiment of the utility model, a labeling machine for accurately identifying color cards used in dairy workshops.

[0032] A labeling machine for accurately identifying color cards in a dairy product workshop comprises a frame 1, wherein the frame 1 is provided with a first clamping component 2, a color code electric eye 3, a second clamping component 4 and a center column 5 in order from top to bottom;

[0033] An up-down adjustment component 31, a front-back adjustment component 32, and a fine adjustment component 33 are sequentially provided between the frame 1 and the color mark electric eye 3. The up-down adjustment component 31, the front-back adjustment component 32, and the fine adjustment component 33 are all used to adjust the position of the color mark electric eye 3, and the color mark electric eye 3 is used to identify the color card of the packaging bag;

[0034] The second clamping assembly 4 includes two clamping plates 41 arranged opposite to each other. The ends of the clamping plates 41 are slidably connected to the extension plates 6. The extension plates 6 and the clamping plates 41 clamp the packaging bag together.

[0035] The color-coded sensor 3 is located between the first clamping assembly 2 and the second clamping assembly 4. This position allows the package bag to enter the detection area of ​​the color-coded sensor 3 in a relatively stable state after being initially fixed and conveyed by the first clamping assembly 2. Because the first clamping assembly 2 has already restrained the package bag to a certain extent, it reduces unstable factors such as shaking and deviation during the conveyance process. This provides a good detection environment for the color-coded sensor 3, helping it to more accurately locate and identify the position of the color card on the package bag.

[0036] In the second clamping assembly 4, the end of the clamping plate 41 is slidably connected to the extension plate 6. This design enables the clamping plate 41 to flexibly adjust the clamping range according to the actual width of the packaging bag. Whether it is a wider or narrower packaging bag, it can be firmly and tightly clamped through the cooperation of the extension plate 6 and the clamping plate 41, effectively preventing the packaging bag from being unable to fit tightly against the center column 5 and bulging during the labeling process.

[0037] Therefore, the color mark electric eye 3 is placed before the second clamping assembly 4, which prevents the packaging bag from being deformed or changing position during the labeling process, resulting in the color mark electric eye 3 being unable to accurately identify the color card on the packaging bag.

[0038] Moreover, the frame 1 is provided with an up-and-down adjustment component 31, a front-and-rear adjustment component 32 and a fine adjustment component 33 in sequence to adjust the position of the color mark electric eye 3, which can ensure that the color mark electric eye 3 is always at the best observation angle and distance, accurately identify the color card information on the packaging bag, and provide an accurate positioning basis for subsequent labeling operations, thereby significantly reducing the problem of inaccurate labeling position caused by color card recognition deviation.

[0039] This solution adjusts the position of the color mark electric eye 3 in multiple dimensions and cooperates with the first clamping component 2 and the second clamping component 4 to solve the problem that the color mark electric eye 3 cannot accurately identify the color card when the packaging bag size does not match the center column 5 and the packaging bag bulges.

[0040] The first clamping assembly 2 includes two clamping rollers 21 arranged opposite to each other. The ends of the clamping rollers 21 are rotatably mounted on the frame 1. The two clamping rollers 21 are used for rolling and clamping the packaging bag.

[0041] Compared to traditional rigid clamping, the rolling clamping method significantly reduces the risk of frictional damage to the bag surface. As the clamping roller 21 rotates, it creates rolling friction with the bag, which is less and more uniform than sliding friction, effectively preventing scratches and nicks on the bag surface.

[0042] When the packaging bag moves in the frame 1, the clamping roller 21 can effectively prevent the packaging bag from getting stuck or stagnating by relying on its own rotation, ensuring that it passes through the labeling area in a stable and uniform state, creating good conditions for subsequent accurate color card recognition and labeling operations, and ensuring the continuity and smoothness of the entire labeling process.

[0043] Since the clamping rollers 21 are rotatably mounted on the frame 1, they can automatically adjust their rotational state according to the moving speed of the packaging bag and the external force it is subjected to, and adaptively match the conveying rhythm of the packaging bag, so that packaging bags of different thicknesses and materials can be clamped and conveyed smoothly, greatly reducing the problem of unstable conveying caused by differences in the texture of the packaging bags, improving the compatibility of the labeling machine with various types of packaging bags, and ensuring that each packaging bag can smoothly enter the correct labeling process.

[0044] The clamping plate 41 includes a clamping mounting portion, a clamping connection portion 42, and a clamping portion 43. The clamping mounting portion is slidably mounted on the frame 1. The end of the clamping mounting portion is fixedly connected to the top of the clamping connection portion 42. The bottom of the clamping connection portion 42 is fixedly connected to the rear end of the clamping portion 43. The length direction of the clamping portion 43 is the front-to-back direction.

[0045] The heights of the two clamping connecting parts 42 are different.

[0046] The clamping mount is slidably mounted on the frame 1 and can be easily adjusted along the frame 1 based on the width of the bag and other dimensional factors, ensuring that it can accommodate bags of varying widths and achieve a secure clamping effect. The clamping connector 42 connects the clamping mount to the clamping portion 43, allowing the fixed support force transmitted from the frame 1 to be more evenly and reasonably distributed to the clamping portion 43, thereby acting on the bag.

[0047] Due to the design of the two clamping connecting parts 42 with inconsistent heights, the clamping part 43 can form an asymmetric clamping state when contacting the packaging bag. It can apply clamping force from different height angles according to the characteristics of the front and rear directions of the packaging bag, so that the force applied to the packaging bag during the clamping process is more stable and balanced, reducing the possibility of local deformation and displacement of the packaging bag due to concentrated force at a single point or uneven force, significantly enhancing the overall clamping stability of the packaging bag, providing a reliable basic guarantee for the subsequent labeling process, and ensuring that the labeling operation can be carried out accurately under the condition that the packaging bag is in a relatively fixed position and stable state.

[0048] The extension plate 6 includes an extension connection portion 61 and an extension portion 62. The extension connection portion 61 is slidably mounted on the clamping portion 43. The bottom of the extension connection portion 61 is fixedly connected to the extension portion 62. The length direction of the extension portion 62 is consistent with the length direction of the clamping portion 43.

[0049] Since the length direction of the extension portion 62 is consistent with the length direction of the clamping portion 43, this unidirectional structural design ensures that when the position of the extension plate 6 is adjusted to adapt to the change in the width of the packaging bag, a continuous and uniform clamping force can be provided along the correct direction. Regardless of whether the packaging bag is wider or narrower, stable and fitting clamping can be guaranteed in the entire length direction. It can not only effectively prevent the packaging bag from shaking, slipping, etc. caused by partial unclamping or uneven clamping force in the width direction; it can also prevent the packaging bag from not matching the center column 5, and the packaging bag from bulging, which makes the color code electric eye 3 unable to recognize the color card.

[0050] The up and down adjustment assembly 31 includes a mounting plate 311, a vertical adjustment rod 312 and a first adjustment plate 313. The mounting plate 311 is vertically mounted on the frame 1. The mounting plate 311 is provided with multiple vertical adjustment rods 312. The vertical adjustment rods 312 are slidingly connected to the first adjustment plate 313. The side wall of the first adjustment plate 313 is threadedly connected to a first locking piece 314. The end of the first locking piece 314 is threaded through the first adjustment plate 313 and abuts against the vertical adjustment rod 312.

[0051] The multiple vertical adjustment rods 312 provided on the mounting plate 311 are slidably connected to the first adjustment plate 313, allowing the first adjustment plate 313 to move smoothly in the vertical direction, thereby adjusting the height of the color-coded electric eye 3. The first adjustment plate 313 can be locked in position by rotating the first locking member 314. This is a simple and easy operation, requiring no complex tools or specialized mechanical debugging skills. Operators can simply rotate the first locking member 314 in the tightening direction by hand or with a simple tool such as a wrench to easily complete the locking action.

[0052] The front-to-back adjustment assembly 32 includes a front-to-back adjustment rod 321 and a second adjustment plate 322. The front-to-back adjustment rod 321 is provided on the front side of the first adjustment plate 313. The front-to-back adjustment rod 321 is slidably connected to the second adjustment plate 322. The side wall of the second adjustment plate 322 is threadedly connected to a second locking piece 323. The end of the second locking piece 323 is threaded through the second adjustment plate 322 and abuts against the front-to-back adjustment rod 321.

[0053] The operator can smoothly move the second adjustment plate 322 along the front-to-back adjustment rod 321 according to the actual front-to-back position of the color card on the packaging bag, and then rotate the second locking piece 323 so that the end of the second locking piece 323 abuts against the front-to-back adjustment rod 321, thereby fixing the second adjustment plate 322 at a specific position, thereby achieving adjustment of the color mark electric eye 3 in the front-to-back dimension, ensuring that the color mark electric eye 3 can accurately align with the color cards at different front-to-back positions on the packaging bag, and effectively avoiding the problem of inaccurate color card recognition caused by front-to-back position deviation.

[0054] The fine adjustment assembly 33 includes a third adjustment plate 331, and the third adjustment plate 331 includes a vertical adjustment portion 332 and a horizontal adjustment portion 333. The top of the vertical adjustment portion 332 is vertically connected to the rear end of the horizontal adjustment portion 333. The vertical adjustment portion 332 is slidably connected to the side wall of the second adjustment plate 322, and the horizontal adjustment portion 333 is slidably connected to the color standard electric eye 3 along the left and right directions.

[0055] The vertical adjustment portion 332 is slidably connected to the side wall of the second adjustment plate 322, so that the position of the color mark electric eye 3 can be slightly adjusted up and down in the vertical direction; and the horizontal adjustment portion 333 is slidably connected to the color mark electric eye 3 to achieve precise fine adjustment of the color mark electric eye 3 in the left and right directions, further improving the accuracy of color card recognition to a higher level, providing an extremely accurate positioning reference for the labeling operation, and minimizing the error of the labeling position.

[0056] The vertical adjustment portion 332 is provided with a vertical adjustment hole 334 , and the left and right ends of the vertical adjustment hole 334 pass through the vertical adjustment portion 332 . The vertical adjustment portion 332 is horizontally connected to the second adjustment plate 322 via a first screw 336 .

[0057] The horizontal adjustment portion 333 is provided with left and right adjustment holes 335 , which pass through the top and bottom of the horizontal adjustment portion 333 . The horizontal adjustment portion 333 is vertically connected to the color mark electric eye 3 via a second screw 337 .

[0058] Rotating the first screw 336 vertically moves the third adjustment plate 331, and then rotating the first screw 336 in the opposite direction secures the third adjustment plate 331, enabling fine adjustments to the height of the color-code sensor 3. Similarly, rotating the second screw 337 allows for fine adjustments to the left and right positions of the color-code sensor 3. Operators can then adjust the position repeatedly based on observed color card recognition until the optimal position is achieved. This simple and efficient operation significantly enhances the flexibility of fine-tuning the position of the color-code sensor 3 during equipment commissioning, facilitating quick mastery and application by frontline operators, reducing time lost to tedious commissioning operations and ultimately improving production efficiency.

[0059] The top of the central column 5 contracts upward to form a straight line in the front-to-back direction.

[0060] Whether it is a narrow small packaging bag or a relatively wide large packaging bag, the straight top can provide appropriate guidance and support when labeling around the central column 5, so that the labeling machine does not need to frequently replace or adjust the structure of the central column 5 for packaging bags of different specifications, thereby improving the versatility and compatibility of the equipment with various packaging specifications and reducing the equipment modification or adaptation costs caused by changes in packaging specifications.

[0061] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. A labeling machine for accurately identifying color cards in dairy workshops, characterized by: The machine comprises a frame, wherein the frame is provided with a first clamping assembly, a color code electric eye, a second clamping assembly and a center column in sequence from top to bottom; An up-down adjustment component, a front-back adjustment component, and a fine adjustment component are sequentially provided between the frame and the color mark electric eye. The up-down adjustment component, the front-back adjustment component, and the fine adjustment component are all used to adjust the position of the color mark electric eye. The color mark electric eye is used to identify the color card of the packaging bag. The second clamping assembly includes two clamping plates arranged opposite to each other, the ends of the clamping plates are slidably connected to extension plates, and the extension plates and the clamping plates clamp the packaging bag together.

2. The labeling machine for accurately identifying color cards for use in dairy products workshops according to claim 1, characterized in that: The first clamping assembly includes two clamping rollers arranged opposite to each other, the ends of the clamping rollers are rotatably mounted on the frame, and the two clamping rollers are used for rolling and clamping the packaging bag.

3. The labeling machine for accurately identifying color cards for use in dairy product workshops according to claim 1, characterized in that: The clamping plate includes a clamping mounting portion, a clamping connection portion, and a clamping portion, wherein the clamping mounting portion is slidably mounted on the frame, an end portion of the clamping mounting portion is fixedly connected to the top of the clamping connection portion, and a bottom portion of the clamping connection portion is fixedly connected to the rear end of the clamping portion, and a length direction of the clamping portion is a front-to-back direction; The heights of the two clamping connection parts are inconsistent.

4. The labeling machine for accurately identifying color cards for use in dairy products workshops according to claim 3, characterized in that: The extension plate includes an extension connection portion and an extension portion. The extension connection portion is slidably sleeved on the clamping portion. The bottom of the extension connection portion is fixedly connected to the extension portion. The length direction of the extension portion is consistent with the length direction of the clamping portion.

5. The labeling machine for accurately identifying color cards for use in dairy products workshops according to claim 4, characterized in that: The up and down adjustment assembly includes a mounting plate, a vertical adjustment rod and a first adjustment plate. The mounting plate is vertically mounted on the frame. The mounting plate is provided with a plurality of vertical adjustment rods. The vertical adjustment rods are slidably connected to the first adjustment plate. The side wall of the first adjustment plate is threadedly connected with a first locking piece. The end of the first locking piece is threaded through the first adjustment plate and abuts against the vertical adjustment rod.

6. The labeling machine for accurately identifying color cards for use in dairy products workshops according to claim 5, characterized in that: The front and rear adjustment assembly includes a front and rear adjustment rod and a second adjustment plate. The front and rear adjustment rod is provided on the front side of the first adjustment plate. The front and rear adjustment rod is slidably connected to the second adjustment plate. The side wall of the second adjustment plate is threadedly connected to a second locking piece. The end of the second locking piece is threaded through the second adjustment plate and abuts against the front and rear adjustment rod.

7. The labeling machine for accurately identifying color cards for use in dairy products workshops according to claim 6, characterized in that: The fine adjustment assembly includes a third adjustment plate, which includes a vertical adjustment part and a horizontal adjustment part. The top of the vertical adjustment part is vertically connected to the rear end of the horizontal adjustment part. The vertical adjustment part is slidably connected to the side wall of the second adjustment plate, and the horizontal adjustment part is slidably connected to the color standard electric eye along the left and right directions.

8. The labeling machine for accurately identifying color cards for use in dairy products workshops according to claim 7, characterized in that: The vertical adjustment portion is provided with a vertical adjustment hole, the left and right ends of the vertical adjustment hole pass through the vertical adjustment portion, and the vertical adjustment portion is horizontally connected to the second adjustment plate through a first screw; The horizontal adjustment part is provided with left and right adjustment holes, which pass through the top and bottom of the horizontal adjustment part. The horizontal adjustment part is vertically connected to the color mark electric eye through a second screw.

9. The labeling machine for accurately identifying color cards for use in dairy products workshops according to claim 4, characterized in that: The top of the central column contracts upward to form a straight line in the front-to-back direction.

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