Label-free marking device

Abstract

The present invention discloses a label-free labeling facility comprising a rack, a disc-type transport module, a laser labeling module, and a first driving module; wherein the disc-type transport module is connected to a feeding device and a discharging device, respectively, and a packaging bottle enters the disc-type transport module by the feeding device, and after completing label printing on the disc-type transport module, returns to the transporter via the discharging device; the laser labeling module comprises a few laser headers, the few laser headers form a circumferential distribution along the disc-type transport module, are installed on the disc-type transport module, can move along the disc-type transport module, and perform labeling on packaging bottles at corresponding positions; and the output end of the first driving module is connected to the disc-type transport module and can drive the disc-type transport module to rotate. In the present invention, the labeled label is clearer, the labeling speed is faster, and it better meets production requirements; The labeling effect is better, the labeling process is more stable, adjustment and maintenance are more convenient, and changing labeling content and size is easier; breakdowns do not occur easily, and maintenance and production costs are relatively low.

Description

Technology Field

[0001] The present invention relates to the field of packaging bottle label printing equipment technology, and in particular, to label-free labeling equipment. Background Technology

[0002] Currently, conventional packaging bottles are equipped with labels (numbers, letters, logos, names, QR codes, barcodes, DM codes, information labels, etc.) that are applied using adhesive or heat shrinkage. Although the packaging bottles are currently collected and recycled after use, a large amount of manpower is wasted because the labels on the bottles must be removed during collection. Furthermore, after removing some of the labels, label adhesive remains on the bottles, making disposal inconvenient and reducing the value of energy saving and eco-friendliness.

[0003] In order to meet the development vision of carbon reduction and eco-friendliness, the concept of "label-free PET bottles" has emerged over the past two years. This involves applying laser printing technology to the bottle body to label the bottle instead of attaching a label containing a brand logo and product information. By removing the label, the use of plastic in the production process can be reduced, material recovery can be simplified, and the recovery process can be reduced. However, with conventional label-free PET bottles, only a small amount of content can be printed on the bottle body using a laser device, and complete product information must be printed on the outer packaging box. Consequently, individual bottles cannot be sold, sales channels are limited, and the demand for wide-area and high-volume production cannot be satisfied.

[0004] A Chinese patent application with publication number CN116967618A discloses an automatic production facility for label-free packaging bottles, wherein the facility includes a rack, and the rack is provided with a bottle transport device and a bottle labeling device, and the bottle labeling device includes a pivot shaft provided on the rack and a driving annular plate fixed coaxially with the pivot shaft, and a driving mechanism is provided on the rack to drive the pivot shaft to rotate, and a plurality of loading trays are rotatably installed on the top part of the driving annular plate, and the plurality of loading trays form a circumferential array distribution along the circumferential direction of the driving annular plate, and a rotational motor is provided on the bottom part of the driving annular plate to drive each loading tray to rotate, a driven annular plate is fixed coaxially on the pivot shaft, and a downward pressure assembly is provided on the driven annular plate to correspond to the loading tray, and a plurality of laser headers for bottle labeling are provided on the rack. The problem to be solved

[0005] The equipment mentioned above has the following defects: 1) The laser header for labeling does not move together with the main annular plate but is installed on a rack, so the rotation speed of the main annular plate must not be excessively fast, which significantly lowers the overall labeling efficiency; 2) During the process of the laser header labeling the bottle, the rotation of the main annular plate makes the labeled label prone to slight deformation, thereby reducing the labeling effect; 3) The downward pressurization assembly compresses or releases the bottle using a cylinder drive method, which is prone to failure as usage time increases, and the cost of using a cylinder drive is relatively high. Therefore, there is an urgent need for additional upgrade replacement. means of solving the problem

[0006] To solve the above problem, the present invention provides a label-free labeling facility, wherein the label-free labeling facility is connected to an external transport device, and the external transport device includes a transporter, a feeding device, and a discharging device; and the label-free labeling facility,

[0007] Rack;

[0008] Disc-type transport modules connected to the feeding device and the discharging device, respectively - the packaged bottle enters the disc-type transport module via the feeding device, completes label printing on the disc-type transport module, and returns to the transporter via the discharging device - ;

[0009] A laser labeling module comprising a few laser headers, wherein the few laser headers form a circumferential distribution along a disc-shaped transport module, is installed on the disc-shaped transport module, can move along the disc-shaped transport module, and performs labeling on packaging bottles at corresponding positions;

[0010] It includes a first driving module in which the output end is connected to a disk-type transport module and can drive the disk-type transport module to rotate.

[0011] Specifically, the disc-type transport module includes a first pivot shaft, a first cam disc, a pair of first fixed racks, a first driving plate, a first driven disc, a few first downward pressing mechanisms and a few loading trays;

[0012] The first pivot shaft is connected to the output terminal of the first drive module;

[0013] The first cam disc is installed over the first pivot axis and does not rotate along the first pivot axis, and a first cam rail is installed on the outer edge of the first cam disc;

[0014] A pair of first fixed racks are each installed on both sides of the first cam disk, are connected to each other with the first cam disk, and are used to fix the first cam disk;

[0015] The first driven disk and the first driving plate are sequentially installed on the first rotation axis and can rotate along the rotation axis; a loading tray is installed on the first driving plate and used to seat bottles;

[0016] A first downward pressure mechanism is installed on the first driven disc, corresponding to a few loading trays; a first pulley is installed on one side of the first downward pressure mechanism, is slidably connected to the first cam disc via a first cam rail, and can move up and down while moving circumferentially along the first cam disc, and is used to compress or release a bottle body.

[0017] Furthermore, a rotation motor is installed correspondingly below each loading tray, and the rotation motor can drive the corresponding loading tray to rotate.

[0018] Furthermore, the first downward pressure mechanism includes a first downward pressure assembly and a pair of first guide rods;

[0019] A pair of first guide rods are installed on the first driven disk;

[0020] The first downward pressure assembly is installed over a pair of first guide rods and can slide along the pair of first guide rods;

[0021] The first pulley is installed on one side of the first downward pressure assembly and is slidably connected to the first cam disc through the first cam rail, and can move up and down while moving circumferentially along the first cam disc.

[0022] Furthermore, the first downward pressure mechanism further includes a pair of first springs and a pair of snap rings;

[0023] A pair of first springs are each installed over a pair of first guide rods;

[0024] A pair of snap rings each correspond to a pair of first springs, are each installed at the bottom of the corresponding pair of first springs, and are fixedly connected to a first guide rod;

[0025] The first spring is installed between the first downward pressure assembly and the snap ring.

[0026] Furthermore, the first downward pressure assembly includes a first slide rack, a first downward pressure rod, and a first compression bushing;

[0027] A first slide rack is installed over a pair of first guide rods, and a first pulley is installed on one side of the first slide rack;

[0028] One end of the first downward pressure rod is connected to the first slide rack, and the other end is movably connected to the first compression bushing, and the first compression bushing can rotate around its own axis.

[0029] Furthermore, the first downward pressure mechanism further includes a first fixed plate installed on the top of a pair of first guide rods and fixedly connected to the pair of first guide rods.

[0030] Furthermore, the laser labeling module further includes a second cam disc, a lifting mechanism, a second driven disc, and a laser header controller;

[0031] The second cam disc is fixedly connected to the first cam disc through a few connecting columns, and a second cam rail is installed on the outer edge of the second cam disc;

[0032] The second driven disk is fixedly connected to the first driven disk through a few connecting columns and can move synchronously along the first driven disk;

[0033] Each of the lifting mechanisms corresponds to and is connected to each of the laser headers, and a second pulley is installed on one side of each lifting mechanism, and the second pulley is slidably connected to the second cam disk through the second cam rail, and can move up and down while moving around along the second cam disk;

[0034] A few laser header controllers correspond individually to a few laser headers and are installed on the second driven disk.

[0035] Furthermore, the lifting mechanism includes a second slide rack and a pair of second guide rods;

[0036] The second slide rack is installed over a pair of second guide rods and can slide relative to the pair of second guide rods; the second pulley is installed on one side of the second slide rack and can guide the second slide rack to operate;

[0037] A pair of second guide rods are fixedly connected to the first driven disk.

[0038] Furthermore, the lifting mechanism further includes a second fixed plate and a pair of second springs;

[0039] The second fixed plate is installed on the top of a pair of second guide rods and is fixedly connected to a pair of second guide rods;

[0040] A pair of second springs are each installed at both ends of the second fixed plate, one end of each second spring is connected to the second fixed plate, and the other end is connected to the second slide rack.

[0041] Furthermore, a position adjustment mechanism is installed between the lifting mechanism and the corresponding laser header, and the position between the lifting mechanism and the corresponding laser header can be adjusted through the position adjustment mechanism.

[0042] Furthermore, the first drive module includes a first drive motor and a power transmission gear set; the first drive motor drives the first rotating shaft, the feeding device, and the discharging device through the power transmission gear set to enable synchronized movement.

[0043] Furthermore, it further includes a first detection camera and a second detection camera; the first detection camera is installed on one side of the joint between the feeding device and the disc-type transport module and is used to detect whether the bottle has entered the disc-type transport module; and the second detection camera is installed on one side of the joint between the discharging device and the disc-type transport module and is used to detect whether there is a related label on the bottle. Effects of the invention

[0044] The beneficial effects of the present invention are as follows.

[0045] 1) The laser header moves synchronously along the disc-type transport module, making the labeled sign clearer and the labeling speed faster;

[0046] 2) By ensuring that the downward pressure assembly and the first cam disc cooperate with each other and applying mechanical power transmission, failures do not occur easily and costs are kept low;

[0047] 3) By applying a lifting mechanism, the laser header becomes more driven while keeping the cost relatively low.

[0048] It should be understood that both the general description above and the detailed description below are exemplary and are intended to provide additional explanation regarding the technology to be protected. Brief explanation of the drawing

[0049] FIG. 1 is a schematic perspective view according to an embodiment of the present invention. Figure 2 is a front view of Figure 1. FIG. 3 is a schematic diagram of a first local perspective view according to an embodiment of the present invention. Figure 4 is an enlarged view of Figure 3 in direction A. FIG. 5 is a schematic diagram of a lifting mechanism according to an embodiment of the present invention. Figure 6 is a plan view of Figure 3. FIG. 7 is a schematic diagram of a second local perspective view according to an embodiment of the present invention. Figure 8 is an enlarged view of Figure 7 in direction B. FIG. 9 is a schematic diagram of a first downward pressure mechanism according to an embodiment of the present invention. Fig. 10 is a left side view of Fig. 7. Figure 11 is an enlarged view of Figure 10 in direction C. FIG. 12 is a schematic diagram of the shape of a first cam rail or a second cam rail according to an embodiment of the present invention. FIG. 13 is a schematic diagram of a first cam disk and a pair of first fixed racks fixedly connected according to an embodiment of the present invention. Specific details for implementing the invention

[0050] Hereinafter, preferred embodiments of the present invention will be examined in detail in conjunction with the drawings, and further description of the present invention will be provided.

[0051] First, a label-free labeling facility according to an embodiment of the present invention will be described by combining Figures 1 to 13. It is used for labeling bottles, and its application scenarios are very wide.

[0052] As illustrated in FIGS. 1 to 13, the label-free labeling facility of an embodiment of the present invention is connected to an external transport device (1), and the external transport device (1) includes a transporter (11), a feeding device (12), and a discharging device (13); the label-free labeling facility,

[0053] Rack (2);

[0054] A disc-shaped transport module (3) connected to each of the feeding device (12) and the discharging device (13) - the packaging bottle enters the disc-shaped transport module (3) by the feeding device (12), and after completing label printing on the disc-shaped transport module (3), returns to the transporter (11) via the discharging device (13) - ;

[0055] A laser labeling module (4) comprising a few laser headers (41), wherein the few laser headers (41) are circumferentially distributed along a disc-shaped transport module (3), installed on the disc-shaped transport module (3), and capable of moving along the disc-shaped transport module (3), and performing labeling on packaging bottles at corresponding positions so as to have a good labeling effect and a fast labeling speed;

[0056] It includes a first driving module (5) in which the output terminal is connected to the disk-type transport module (3) and can drive the disk-type transport module (3) to rotate.

[0057] Specifically, as illustrated in FIGS. 2–3, 6–8, and 10–13, in this embodiment, the disc-type transport module (3) comprises a first pivot shaft (31), a first cam disc (32), a pair of first fixed racks (33), a first driving plate (34), a first driven disc (35), a first downward pressing mechanism, and a loading tray (37);

[0058] The first pivot shaft (31) is connected to the output terminal of the first drive module (5);

[0059] The first cam disc (32) is installed over the first pivot shaft (31) and does not rotate along the first pivot shaft (31), and the first cam rail (321) is installed on the outer edge of the first cam disc (32);

[0060] A pair of first fixed racks (33) are each installed on both sides of the first cam disk (32), connected to each other with the first cam disk (32), and used to fix the first cam disk (32);

[0061] The first driven disk (35) and the first driving plate (34) are sequentially installed on the first rotation axis (31) and can rotate along the rotation axis; a loading tray (37) is installed on the first driving plate (34) and used to seat bottles;

[0062] A first downward pressure mechanism (36) corresponding to a few loading trays (37) is installed on the first driven disk (35); a first pulley (361) is installed on one side of the first downward pressure mechanism (36), and is slidably connected to the first cam disk (32) through the first cam rail (321), and can move up and down while moving around along the first cam disk (32), and is used to compress or release the bottle body; by ensuring that the first downward pressure mechanism (36) and the first cam rail (321) cooperate with each other, the power transmission effect is good and failure does not occur easily.

[0063] Furthermore, as illustrated in FIG. 3 and FIG. 11, in this embodiment, a rotation motor (38) is installed correspondingly below each loading tray (37), and the rotation motor (38) can drive the corresponding loading tray (37) to rotate, and the laser header (41) can rotate the bottle body according to the demand for labeling during the labeling process.

[0064] Furthermore, as illustrated in FIGS. 8 and 9, in this embodiment, the first downward pressure mechanism (36) includes a first downward pressure assembly (362) and a pair of first guide rods (363);

[0065] A pair of first guide rods (363) are installed on the first driven disk (35);

[0066] The first downward pressure assembly (362) is installed over a pair of first guide rods (363) and can slide along the pair of first guide rods (363);

[0067] The first pulley (361) is installed on one side of the first downward pressure assembly (362) and is slidably connected to the first cam disk (32) through the first cam rail (321), and can move up and down while moving around along the first cam disk (32).

[0068] Furthermore, as illustrated in FIGS. 8 and 9, in this embodiment, the first downward pressing mechanism (36) further includes a pair of first springs (364) and a pair of snap rings (365);

[0069] A pair of first springs (364) are each installed over a pair of first guide rods (363);

[0070] A pair of snap rings (365) each correspond to a pair of first springs (364), are each installed at the bottom of the corresponding pair of first springs (364), and are fixedly connected to a first guide rod (363);

[0071] The first spring (364) is installed between the first downward pressure assembly (362) and the snap ring (365), and the first spring (364) is used to assist in cushioning the first downward pressure assembly (362) and resetting the first downward pressure assembly (362).

[0072] Furthermore, as illustrated in FIGS. 8 and 9, in this embodiment, the first downward pressure assembly (362) includes a first slide rack (3621), a first downward pressure rod (3622), and a first compression bushing (3623);

[0073] The first slide rack (3621) is installed over a pair of first guide rods (363), and the first pulley (361) is installed on one side of the first slide rack (3621);

[0074] One end of the first downward pressure rod (3622) is connected to the first slide rack (3621), and the other end is movably connected to the first compression bushing (3623), and the first compression bushing (3623) can rotate around its own axis, thereby allowing the bottle body to be driven more effectively when the rotational motor (38) drives the loading tray (37) to rotate.

[0075] Furthermore, as illustrated in FIGS. 8 and 9, in this embodiment, the first downward pressure mechanism (36) further includes a first fixing plate (366) which is installed on the upper end of a pair of first guide rods (363) and fixedly connected to a pair of first guide rods (363); on one side, it is used to make the structure of the pair of first guide rods (363) more stable, and on the other side, to limit the position of the first slide rack (3621).

[0076] Furthermore, as illustrated in FIGS. 1–5, in this embodiment, the laser labeling module (4) further comprises a second cam disk (42), a lifting mechanism (43), a second driven disk (44), and a laser header controller (45);

[0077] The second cam disk (42) is fixedly connected to the first cam disk (32) through a few connecting columns, and a second cam rail (421) is installed on the outer edge of the second cam disk (42);

[0078] The second driven disk (44) is fixedly connected to the first driven disk (35) through a few connecting columns and can move synchronously along the first driven disk (35);

[0079] Each of the lifting mechanisms (43) corresponds to and is connected to each of the laser headers (41), and a second pulley (431) is installed on one side of each lifting mechanism (43), and the second pulley (431) is slidably connected to the second cam disk (42) through the second cam rail (421), and can move up and down while moving around along the second cam disk (42);

[0080] Each of the laser header controllers (45) corresponds to each of the laser headers (41) and is installed on the second driven disk (44).

[0081] Furthermore, as illustrated in FIGS. 1–5, in this embodiment, the lifting mechanism (43) includes a second slide rack (432) and a pair of second guide rods (433);

[0082] The second slide rack (432) is installed over a pair of second guide rods (433) and can slide relative to the pair of second guide rods (433); the second pulley (431) is installed on one side of the second slide rack (432) and can guide the second slide rack (432) to operate;

[0083] A pair of second guide rods (433) are fixedly connected to the first driven disk (35).

[0084] Furthermore, the lifting mechanism (43) further includes a second fixed plate (434) and a pair of second springs (435);

[0085] The second fixed plate (434) is installed on the top of a pair of second guide rods (433) and is fixedly connected to the pair of second guide rods (433); on one side, it is used to make the structure of the pair of second guide rods (433) more stable, and on the other side, to limit the position of the second slide rack (432).

[0086] A pair of second springs (435) are each installed at both ends of the second fixed plate (434), one end of the second spring (435) is connected to the second fixed plate (434), and the other end is connected to the second slide rack (432); by configuring the second spring (435), on one side, it acts as a buffer for the second slide rack (432) and assists in the reset of the second slide rack (432); on the other side, it provides upward tension to the second slide rack (432) so that the pressure between the second pulley (431) and the upper wall of the second cam rail (421) becomes nearly zero, thereby greatly reducing the frictional force generated during the movement process between the second pulley (431) and the upper wall of the second cam rail (421).

[0087] Furthermore, as illustrated in FIG. 5, in this embodiment, a position adjustment mechanism (46) is installed between the laser header (41) corresponding to the lifting mechanism (43), and the position (41) between the lifting mechanism (43) and the laser header corresponding to the laser header can be adjusted through the position adjustment mechanism (46), thereby positioning the laser header (41) at an optimal labeling position.

[0088] Furthermore, as illustrated in FIG. 10, in this embodiment, the first drive module (5) includes a first drive motor and a power transmission gear set; the first drive motor drives the first rotation shaft (31), the feeding device (12), and the discharging device (13) through the power transmission gear set to cause synchronized movement.

[0089] Furthermore, as illustrated in FIG. 3 and FIG. 6, the present embodiment further includes a first detection camera (61) and a second detection camera (62); the first detection camera (61) is installed on one side of the joint between the feeding device (12) and the disc-type transport module (3) and is used to detect whether the bottle has entered the disc-type transport module (3); and the second detection camera (62) is installed on one side of the joint between the discharging device (13) and the disc-type transport module (3) and is used to detect whether there is a related label on the bottle.

[0090] Furthermore, as shown in FIG. 12, in this embodiment, the shape structure of the first cam rail (321) and the second cam rail (421) is similar.

[0091] The operating principle is as follows: first, the bottle enters the loading tray (37) of the disc-type transport module (3) from the feeding device (12), at which time the first downward pressure assembly (362) moves along the first pulley (361) from a high position to a low position of the first cam rail (321) so that the first compression bushing (3623) compresses the bottle; then, the laser header (41) at a position corresponding to the bottle moves along the second pulley (431) from a high position to a low position of the second cam rail (421) to start labeling the bottle; After the corresponding bottle is labeled during the movement process, the first downward pressurization assembly (362) moves from a low position to a high position along the first pulley (361) of the first cam rail (321), and the laser header (41) at the position corresponding to the corresponding bottle moves from a low position to a high position along the second pulley (431) of the second cam rail (421), and the corresponding bottle is discharged by the discharge device (13) and returned to the transporter (11); each bottle undergoes this process.

[0092] For the above, a label-free labeling facility according to an embodiment of the present invention has been described with reference to FIGS. 1 to 13. The laser header moves in synchronization along a disc-type transport module, thereby making the labeled sign clearer and the labeling speed faster; the downward pressure assembly and the first cam disc cooperate with each other and mechanical power transmission is applied so that breakdowns do not occur easily and costs are low; and by applying a lifting mechanism, the laser header is made to move more effectively while maintaining relatively low costs.

[0093] It must be explained that, in this specification, terms such as “include,” “comprising,” or any other variations are intended to encompass a non-exclusive meaning of inclusion, thereby a process, method, article, or apparatus comprising a series of elements includes not only such elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Unless specifically limited, the elements defined in the phrase “comprising” do not exclude the presence of other identical elements in the process, method, article, or apparatus comprising such elements.

[0094] Although the content of the present invention has been introduced in detail through the preferred embodiments above, it should be understood that the foregoing description should not be construed as a limitation on the present invention. It is obvious that those skilled in the art may make various modifications and substitutions to the present invention after familiarizing themselves with the foregoing, and accordingly, the scope of protection of the present invention should be limited by the following claims.

Claims

Claim 1 A label-free labeling facility connected to an external transport device comprising a transporter, a feeding device, and a discharging device, wherein the label-free labeling facility comprises: a rack; a disc-type transport module each connected to the feeding device and the discharging device—whereby a packaging bottle enters the disc-type transport module by the feeding device, completes label printing on the disc-type transport module, and returns to the transporter via the discharging device—; and a laser labeling module comprising a few laser headers, wherein the few laser headers form a circumferential distribution along the disc-type transport module, is installed on the disc-type transport module, is capable of moving along the disc-type transport module, and performs labeling on a packaging bottle at a corresponding position. A first drive module having an output end connected to the disc-type transport module and capable of driving the disc-type transport module to rotate; wherein the disc-type transport module comprises a first pivot shaft, a first cam disk, a pair of first fixed racks, a first driving plate, a first driven disk, a first downward pressing mechanism, and a loading tray; wherein the first pivot shaft is connected to the output end of the first drive module; wherein the first cam disk is installed over the first pivot shaft and does not rotate along the first pivot shaft, and a first cam rail is installed on the outer edge of the first cam disk; wherein the pair of first fixed racks are each installed on both sides of the first cam disk, are connected to the first cam disk, and are used to fix the first cam disk; and wherein the first driven disk and the first driving plate are installed sequentially over the first pivot shaft and can rotate along the pivot shaft; A small loading tray is installed on the first driving plate and used to seat the bottle body; and a first downward pressing mechanism corresponding to each of the small loading trays is installed on the first driven disc;A first pulley is installed on one side of the first downward pressurizing mechanism, is slidably connected to the first cam disk through the first cam rail, and can move up and down while moving circumferentially along the first cam disk, and is used to compress or release the bottle body; the laser labeling module further includes a second cam disk, a lifting mechanism, a second driven disk, and a laser header controller; the second cam disk is fixedly connected to the first cam disk through a connecting column, and a second cam rail is installed on the outer edge of the second cam disk; the second driven disk is fixedly connected to the first driven disk through a connecting column and can move synchronously along the first driven disk; Each of the above lifting mechanisms corresponds to and is connected to each of the above laser headers, and a second pulley is installed on one side of each lifting mechanism, and the second pulley is slidably connected to the second cam disk through the second cam rail and can move up and down while moving circumferentially along the second cam disk; each of the above laser header controllers corresponds to each of the above laser headers and is installed on the second driven disk; the lifting mechanism includes a second slide rack and a pair of second guide rods; the second slide rack is installed over the pair of second guide rods and can slide relative to the pair of second guide rods; the second pulley is installed on one side of the second slide rack and can guide the second slide rack to operate; the pair of second guide rods are fixedly connected to the first driven disk; the lifting mechanism further includes a second fixed plate and a pair of second springs; The second fixed plate is installed on the upper end of the pair of second guide rods and is fixedly connected to the pair of second guide rods;A label-free labeling facility characterized in that the pair of second springs are each installed at both ends of the second fixed plate, one end of the second spring is connected to the second fixed plate, and the other end is connected to the second slide rack. Claim 2 A label-free labeling facility according to claim 1, wherein the first downward pressure mechanism comprises a first downward pressure assembly and a pair of first guide rods; the pair of first guide rods are installed on the first driven disk; the first downward pressure assembly is installed over the pair of first guide rods and can slide along the pair of first guide rods; and the first pulley is installed on one side of the first downward pressure assembly and is slidably connected to the first cam disk through the first cam rail, and can move up and down while moving circumferentially along the first cam disk. Claim 3 In paragraph 2, the first downward pressure mechanism further comprises a pair of first springs and a pair of snap rings; the pair of first springs are each installed over the pair of first guide rods; the pair of snap rings each correspond to the pair of first springs and are each installed at the lower end of the corresponding pair of first springs and are fixedly connected to the first guide rods; and the first springs are installed between the first downward pressure assembly and the snap rings, characterized by a label-free labeling facility. Claim 4 A label-free labeling facility according to claim 2 or 3, wherein the first downward pressure assembly comprises a first slide rack, a first downward pressure rod, and a first compression bushing; the first slide rack is installed over a pair of first guide rods, and the first pulley is installed on one side of the first slide rack; and one end of the first downward pressure rod is connected to the first slide rack, and the other end is movably connected to the first compression bushing, and the first compression bushing is capable of rotating around its own axis. Claim 5 A label-free labeling facility according to claim 2 or 3, wherein the first downward pressure mechanism further comprises a first fixing plate installed at the top of the pair of first guide rods and fixedly connected to the pair of first guide rods. Claim 6 A label-free labeling facility according to claim 1, characterized in that a position adjustment mechanism is installed between the laser header corresponding to the lifting mechanism, and the position between the laser header corresponding to the lifting mechanism can be adjusted through the position adjustment mechanism.

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