Automatic labeling machine

Abstract

The present invention discloses an automatic labeling machine, including a conveying device, a labeling device, a rolling device and a first support frame. The conveying device includes a machine platform and a conveying mechanism arranged in the machine platform. The first support frame spans over the conveying device. The labeling device is installed on the first support frame and is opposite to the conveying mechanism. The labeling device includes a reel, a stripping plate for stripping labels and a reel. The stripping plate is arranged in an inclined manner from top to bottom along the conveying direction of the conveying device. The reel and the reel rotate synchronously and intermittently. The rolling device is arranged in front of the stripping plate. The rolling device includes a rolling shaft, which is arranged horizontally and intermittently raised and lowered. The rolling shaft is rotatably arranged. Compared with the prior art, the lifting and lowering of the rolling shaft avoids contact and slows down the moving speed of the product, and at the same time avoids the compacted label from being pressed out of wrinkles for the second time. Therefore, the automatic labeling machine of the present invention has the advantages of reducing label displacement and wrinkles and providing high work efficiency.

Description

Technical Field

[0001] The invention relates to the field of plane labeling, and in particular to an automatic labeling machine. Background Art

[0002] With the advancement of science and technology and the development of humanities, industry is booming. In order to meet market demand, equipment in industry is constantly improved to improve efficiency.

[0003] In the product packaging operation line, the products need to be packed into cardboard boxes, and the cardboard boxes need to be labeled before entering the packaging operation.

[0004] Traditional labeling operations are usually performed manually by workers. Due to the inaccurate position accuracy of manual labeling and low labeling efficiency, automatic labeling machines are developed to solve the above problems. The existing automatic labeling machines include labeling devices, conveying devices and rolling devices. Since the height of the existing rolling devices is set to be consistent with the thickness of the cardboard box, when the product passes through the rolling device, the rolling device is easy to rub the affixed label, thereby causing the position of the label to move or causing the label to be wrinkled, affecting the appearance. At the same time, the rolling device will also affect the speed of the passing cardboard box, causing the speed to decrease, resulting in low work efficiency.

[0005] Therefore, there is an urgent need for an automatic labeling machine that reduces label displacement and wrinkles and provides high working efficiency to overcome the above defects. Summary of the invention

[0006] The object of the present invention is to provide an automatic labeling machine which can reduce label displacement and wrinkles and provide high working efficiency.

[0007] To achieve the above-mentioned purpose, the automatic labeling machine of the present invention includes a conveying device for conveying products, a labeling device for labeling products, a rolling device for rolling the labeled products and a first support frame. The conveying device includes a machine platform and a conveying mechanism arranged in the machine platform. The first support frame spans over the conveying device. The labeling device is installed on the first support frame and is opposite to the conveying mechanism. The labeling device includes a reel for releasing the label, a peeling plate for peeling the label and a reel for winding the base tape. The peeling plate is inclined from top to bottom along the conveying direction of the conveying device. The reel and the reel rotate synchronously and intermittently. The rolling device is arranged in front of the peeling plate. The rolling device includes a rolling shaft. The rolling shaft is horizontally arranged and intermittently raised and lowered. The rolling shaft is rotatable.

[0008] Preferably, it also includes a sensor and a controller electrically connected to the sensor, the sensor is arranged on a second support frame, and the controller controls the intermittent movement of the unwinding shaft, the winding shaft and the rolling shaft according to the information detected by the sensor.

[0009] Preferably, the second support frame spans over the conveying device, and the sensor faces the conveying device.

[0010] Preferably, the sensor includes a first sensor for detecting whether the product is on the conveying device and a second sensor for detecting whether there is a label on the product; when the first sensor detects that there is a product on the conveying device, the controller controls the unwinding shaft to unwind and controls the rewinding shaft to rewind; when the second sensor detects that the product on the conveying device has a label, the controller controls the rolling shaft to rise and fall.

[0011] Preferably, it also includes a mounting frame, which is mounted on the first supporting frame, and the labeling device is mounted on the mounting frame.

[0012] Preferably, the mounting frame includes a first mounting plate and a second mounting plate, the first mounting plate is located above the second mounting plate, and the second mounting plate is located in front of the first mounting plate.

[0013] Preferably, the unwinding shaft is horizontally arranged on the first mounting plate, the rewinding shaft is horizontally arranged on the second mounting plate, and the stripping plate is arranged on the second mounting plate.

[0014] Preferably, the rolling shaft is swingably arranged around a pivot center line, and the lifting and lowering are achieved by the swing of the rolling shaft.

[0015] Preferably, the rolling device also includes a swing arm, a first end of the swing arm pivots around a pivot center line, a second end of the swing arm is connected to the rolling shaft, and rotation of the swing arm around the pivot center line drives the rolling shaft to swing.

[0016] Preferably, the swing arm is arranged orthogonally to the rolling axis.

[0017] Preferably, the rolling shaft includes a fixed shaft and a shaft sleeve rotatably sleeved outside the fixed shaft, the fixed shaft is fixed to the second end of the swing arm, and the shaft sleeve is a flexible structure.

[0018] Preferably, the rolling device further comprises a rotating motor, a motor shaft of the rotating motor is passed through the first end of the swing arm and is fixedly connected to the swing arm, and the rotating motor drives the swing arm to pivot around the pivot center line.

[0019] Preferably, it also includes a limiting structure, which includes a limiting long slot opened on the swing arm, a limiting column slidably arranged on the limiting long slot and an elastic band, the limiting long slot is arranged along the length direction of the swing arm, the first end of the elastic band is fixed, and the second end of the elastic band is connected to the limiting column. When the swing arm pivots, the limiting column switches between the two ends of the limiting long slot and selectively stretches the elastic band.

[0020] Preferably, the rolling device also includes a driver for driving the rolling shaft to move up and down, the output end of the driver is connected to the rolling shaft, and the driver is arranged on the machine platform.

[0021] Preferably, the first support frame includes a horizontal support and two vertical supports erected on the machine platform. The horizontal support is horizontally arranged and the two ends of the horizontal support are respectively connected to the vertical supports. The horizontal support can slide up and down relative to the vertical supports, and the labeling device is installed on the horizontal support.

[0022] Preferably, the horizontal bracket includes a plurality of horizontally arranged horizontal bars and sliding seats arranged at both ends of the horizontal bars, and the vertical bracket includes a fixed seat installed on the machine platform and a plurality of vertical bars erected on the fixed seat, and the vertical bars are inserted into the sliding seat on the same side.

[0023] Preferably, the first support frame also includes an adjustment mechanism for adjusting the upward and downward sliding movement of the cross support.

[0024] Preferably, the automatic labeling machine further comprises two guide rods arranged along the conveying direction of the conveying device, the guide rods are arranged to be spaced apart, and the guide rods are also located above the conveying mechanism.

[0025] Preferably, the guide rods can be slidably adjusted along the spacing direction to adjust the distance between the two guide rods.

[0026] Preferably, both ends of the guide rod are provided with sliding columns respectively, the machine platform is provided with sliding grooves for the sliding columns to pass through and slide, and the sliding columns are also provided with locking structures.

[0027] Compared with the prior art, the automatic labeling machine of the present invention relies on the mutual coordination and cooperation of the conveying device, the labeling device and the rolling device. When the product passes through the stripping plate of the labeling device under the drive of the conveying device, the unwinding shaft and the winding shaft of the labeling device rotate so that the stripping plate strips the label. Since the stripping plate is inclined from top to bottom along the conveying direction of the conveying device, the label is gradually stripped from the base belt at the side of the stripping plate, that is, the label is gradually stripped from the turning point. The stripped label is also gradually pasted on the surface of the product as the product moves. As the product moves, a complete label is stripped from the base belt and is also completely pasted on the product; at the same time, the base belt of the stripped label is also synchronously rolled up by the winding shaft; after the label is completely pasted on the product, the rolling shaft in the rolling device descends to roll the label pasted on the product to ensure that the label is firmly pasted on the product. After the rolling time is over, the rolling shaft rises to provide a clearance space for the conveying of the product, avoid contact and slow down the moving speed of the product, and at the same time avoid the compacted label from being wrinkled by secondary pressing. Therefore, the automatic labeling machine of the present invention has the advantages of reducing label displacement and wrinkles and providing high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the automatic labeling machine of the present invention.

[0029] Figure 2 yes Figure 1 A magnified schematic diagram of center A.

[0030] Figure 3 It is a schematic diagram of the top view of the conveying device and the guide rod of the automatic labeling machine of the present invention. DETAILED DESCRIPTION

[0031] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0032] The automatic labeling machine 100 of the present invention is suitable for attaching labels to the surface of a product in a moving state. It is understood that the label is sticky and is located on the surface of the base tape. In this embodiment, the product is a flat cardboard box. Of course, in other embodiments, the product can also be other flat objects, so it is not limited to this.

[0033] See also Figure 1 and Figure 2The automatic labeling machine 100 of the present invention includes a conveying device 1 for conveying products, a labeling device 2 for labeling products, a rolling device 3 for rolling the labeled products, a sensor, a controller electrically connected to the sensor (not shown), a first support frame 5 and a second support frame 6. The sensing conveying device 1 includes a machine table 11 and a conveying mechanism 12 arranged in the machine table 11. The first support frame 5 and the second support frame 6 span the conveying device 1 and are spaced apart. The labeling device 2 is installed on the first support frame 5 and is opposite to the conveying mechanism 12. The labeling device 2 includes a reel 21 for releasing labels, a peeling plate 23 for peeling labels and a reel for rewinding the base tape. The peeling plate 23 is arranged to be inclined from top to bottom along the conveying direction of the conveying device 1. The reel 21 and the reel rotate synchronously and intermittently. The rolling device 3 is arranged in front of the stripping plate 23, and the rolling device 3 includes a rolling shaft 31, which is arranged horizontally and intermittently raised and lowered, and the rolling shaft 31 is arranged rotatably. The sensor is arranged on the second support frame 6 and faces the conveying device 1. The controller controls the intermittent movement of the unwinding shaft 21, the winding shaft and the rolling shaft 31 by means of the information detected by the sensor. Specifically, the sensor includes a first sensor 41 for detecting whether the product is on the conveying device 1 and a second sensor 42 for detecting whether there is a label on the product. When the first sensor 41 detects that there are products on the conveying device 1, the controller controls the unwinding shaft 21 to unwind and controls the rewinding shaft to rewind, thereby cooperating with the peeling plate 23 to peel off the label, and the passing product will drag the peeled label so that it is attached to the surface of the product through the viscosity of the label; when the second sensor 42 detects that there are labels on the product on the conveying device 1, the controller controls the rolling shaft 31 to descend to compact the affixed label; during the compaction process, the rolling shaft 31 is also driven to roll due to the movement of the product, thereby reducing the friction between the rolling shaft 31 and the label and the surface of the product, avoiding damage to the label or slowing down the movement speed of the product; after the rolling shaft 31 has rolled for a certain period of time, the controller controls the rolling shaft 31 to rise to provide avoidance space for the moving product, thereby ensuring the movement speed of the product without damaging the compacted label. More specifically, as follows:

[0034] See also Figure 1 and Figure 2The automatic labeling machine 100 of the present invention further includes a mounting frame 7, which is mounted on the first support frame 5, and the labeling device 2 is mounted on the mounting frame 7. Specifically, the mounting frame 7 includes a first mounting plate 71 and a second mounting plate 72, wherein the first mounting plate 71 is located above the second mounting plate 72, and the second mounting plate 72 is located in front of the first mounting plate 71. The unwinding shaft 21 is horizontally arranged on the first mounting plate 71, the rewinding shaft is horizontally arranged on the second mounting plate 72, and the stripping plate 23 is arranged on the second mounting plate 72. It can be understood that the label comes out of the unwinding shaft 21, passes through the stripping plate 23, and is finally rewound on the rewinding shaft. A plurality of guide shafts 24 are also arranged between the unwinding shaft 21 and the rewinding shaft, and the guide shafts 24 are respectively arranged on the first mounting plate 71 and the second mounting plate 72. With the help of the guide shaft 24, the label belt is tensioned, so that the label can be easily peeled off.

[0035] See also Figure 1 and Figure 2 , the rolling shaft 31 is swingably arranged around a pivot center line L, and the lifting and lowering are realized by the swinging of the rolling shaft 31. The rolling device 3 also includes a swing arm 32 and a rotating motor, the first end of the swing arm 32 pivots around the pivot center line L, the second end of the swing arm 32 is connected to the rolling shaft 31, and the swing arm 32 is arranged orthogonally to the rolling shaft 31. The motor shaft of the rotating motor is inserted into the first end of the swing arm 32 and is fixedly connected to the swing arm 32. The rotating motor drives the swing arm 32 to pivot around the pivot center line L, and the rotation of the swing arm 32 around the pivot center line L drives the rolling shaft 31 to swing. For example, in this embodiment, the rolling shaft 31 includes a fixed shaft 311 and a sleeve 312 rotatably sleeved outside the fixed shaft 311, and the fixed shaft 311 is fixed to the second end of the swing arm 32. Preferably, the sleeve 312 is a flexible structure, so that in the process of pressing the label, the excessive pressure of the fixed shaft 311 is buffered to avoid pressing too tightly.

[0036] See also Figure 1 and Figure 2The rolling device 3 further includes a limiting structure 34, which includes a limiting long slot 341 provided on the swing arm 32, a limiting column 342 slidably arranged on the limiting long slot 341, and an elastic band 343. The limiting long slot 341 is arranged along the length direction of the swing arm 32, the first end of the elastic band 343 is fixed, and the second end of the elastic band 343 is connected to the limiting column 342. When the swing arm 32 pivots, the limiting column 342 switches between the two ends of the limiting long slot 341 and selectively stretches the elastic band 343. Specifically, when the swing arm 32 pivots to drive the rolling shaft 31 downward, the limiting column 342 is located at the first end of the limiting slot 341, that is, the end away from the pivot center line L, and the limiting column 342 stretches the elastic band 343, thereby preventing the rolling shaft 31 from excessively descending by virtue of the tension of the elastic band 343; when the swing arm 32 pivots to drive the rolling shaft 31 upward, the tension of the elastic band 343 disappears and the limiting column 342 is located at the second end of the limiting slot 341, that is, the end close to the pivot center line L. Of course, it is understandable that in other embodiments, the rolling device 3 includes a rolling shaft 31 and a driver for driving the rolling shaft 31 to move up and down, the output end of the driver is connected to the rolling shaft 31, and the driver is disposed on the machine table 11. The rolling device 3 can also move the rolling shaft 31 up and down, so it is not limited to this.

[0037] See also Figure 1 and Figure 2 The first support frame 5 includes a horizontal support 51 and two vertical supports 52 erected on the machine 11. The horizontal support 51 is horizontally arranged and the two ends of the horizontal support 51 are respectively connected to the vertical supports 52. The horizontal support 51 can slide up and down relative to the vertical supports 52, and the labeling device 2 is installed on the horizontal support 51. For example, the horizontal support 51 includes a plurality of horizontally arranged horizontal bars 511 and sliding seats 512 arranged at both ends of the horizontal bars 511. The vertical support 52 includes a fixed seat 522 installed on the machine 11 and a plurality of vertical bars 521 erected on the fixed seat 522. The vertical bars 521 are inserted into the sliding seat 512 on the same side. Specifically, the first support frame 5 also includes an adjustment mechanism for adjusting the up and down sliding of the horizontal support 51. The adjustment mechanism is a transmission structure of a screw-nut combination. The transmission structure is well known to those skilled in the art, so it will not be described here.

[0038] See also Figure 1 and Figure 3The automatic labeling machine 100 also includes two guide rods 8 arranged along the conveying direction of the conveying device 1. The guide rods 8 are spaced apart, and the guide rods 8 are also located above the conveying mechanism 12. With the help of the guide rods 8, the product is ensured to be located between the two guide rods 8 during the conveying process of the product, thereby avoiding product displacement. Preferably, the guide rod 8 can be slidably adjusted along the direction of the interval to adjust the spacing between the two guide rods 8, so as to be suitable for products of different widths. In order to achieve the sliding adjustment between the two guide rods 8, the two ends of the guide rod 8 are respectively provided with a sliding column, and the machine table 11 is provided with a sliding groove 111 for the sliding column to slide through. The sliding column is also provided with a locking structure 82. After the guide rod 8 slides into place, the guide rod 8 is locked by the locking structure 82.

[0039] It is understandable that the conveying mechanism 12 of the conveying device 1 is a conveying mechanism of a conveyor belt and a pulley, which is well known to those skilled in the art and will not be described in detail here.

[0040] In conjunction with the accompanying drawings, the working principle of the automatic labeling machine 100 of the present invention is explained: after the product is placed on the conveying mechanism 12 of the conveying device 1 and gets closer and closer to the first sensor 41, the first sensor 41 senses that the conveying mechanism 12 has the product and then feeds back the information to the controller. The controller controls the unwinding shaft 21 and the winding shaft of the labeling device 2 to rotate, thereby driving the label to be peeled off. After the product drags the label and the label is attached to the surface of the product, the second sensor 42 feeds back the information that the product has the label to the controller, and the controller controls the rotating motor to rotate, thereby driving the swing arm 32 to rotate, thereby driving the rolling shaft 31 to rise and fall.

[0041] Compared with the prior art, the automatic labeling machine 100 of the present invention relies on the coordination and cooperation between the conveying device 1, the labeling device 2 and the rolling device 3. When the product passes through the peeling plate 23 of the labeling device 2 under the drive of the conveying device 1, the unwinding shaft 21 and the winding shaft of the labeling device 2 rotate so that the peeling plate 23 peels off the label. Since the peeling plate 23 is inclined from top to bottom along the conveying direction of the conveying device 1, the label is gradually peeled off from the base belt at the side of the peeling plate 23, that is, the label is gradually peeled off from the base belt from the turning point, and the peeled label is gradually attached as the product moves. On the surface of the product, as the product moves, a complete label is peeled off from the base tape and is also completely pasted on the product; at the same time, the base tape of the peeled label is also synchronously rolled up by the reel; after the label is completely pasted on the product, the rolling shaft in the rolling device 3 descends to roll the label pasted on the product to ensure that the label is firmly pasted on the product. After the rolling time is over, the rolling shaft 31 rises to provide a clearance space for the product to avoid contact and slow down the moving speed of the product, and at the same time avoid the compacted label from being wrinkled by secondary pressing. Therefore, the automatic labeling machine 100 of the present invention has the advantages of reducing label displacement and wrinkles and providing high work efficiency.

[0042] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. An automatic labeling machine, characterized in that: The invention comprises a conveying device for conveying products, a labeling device for labeling products, a rolling device for rolling the labeled products and a first support frame, wherein the conveying device comprises a machine platform and a conveying mechanism arranged in the machine platform, the first support frame spans over the conveying device, the labeling device is installed on the first support frame and is opposite to the conveying mechanism, the labeling device comprises a reel for releasing labels, a peeling plate for peeling labels and a reel for rewinding base tape, the peeling plate is arranged obliquely from top to bottom along the conveying direction of the conveying device, the reel and the reel rotate synchronously and intermittently, the rolling device is arranged in front of the peeling plate, wherein the rolling device comprises: A rolling shaft, which is horizontally arranged and intermittently raised and lowered. After the label is completely attached to the product, the rolling shaft descends to roll the label attached to the product. After the rolling time is over, the rolling shaft rises to provide a clearance space for the product. The rolling shaft is rotatably arranged and swings around a pivot center line. A swing arm, wherein the first end of the swing arm pivots around the pivot center line, the second end of the swing arm is connected to the rolling shaft, and the rotation of the swing arm around the pivot center line drives the rolling shaft to swing, so that the rolling shaft is lifted and lowered by the swing of the rolling shaft; A limiting structure, wherein the limiting structure comprises a limiting long slot provided on the swing arm, a limiting column slidably arranged on the limiting long slot, and an elastic band, wherein the limiting long slot is arranged along the length direction of the swing arm, a first end of the elastic band is fixed, and a second end of the elastic band is connected to the limiting column, and when the swing arm pivots, the limiting column switches between the two ends of the limiting long slot and selectively stretches the elastic band; and A rotating motor, wherein a motor shaft of the rotating motor is passed through the first end of the swing arm and is fixedly connected to the swing arm, and the rotating motor drives the swing arm to pivot around the pivot center line.

2. The automatic labeling machine according to claim 1, characterized in that: It also includes a sensor and a controller electrically connected to the sensor, wherein the sensor is arranged on a second support frame, and the controller controls the intermittent movement of the unwinding shaft, the winding shaft and the rolling shaft according to the information detected by the sensor.

3. The automatic labeling machine according to claim 2, characterized in that: The second supporting frame spans over the conveying device, and the sensor faces the conveying device.

4. The automatic labeling machine according to claim 2, characterized in that: The sensor includes a first sensor for detecting whether a product is on a conveying device and a second sensor for detecting whether a product has a label; when the first sensor detects that there is a product on the conveying device, the controller controls the unwinding shaft to unwind and controls the rewinding shaft to rewind; When the second sensor detects that the product on the conveying device has a label, the controller controls the rolling shaft to rise and fall.

5. The automatic labeling machine according to claim 1, characterized in that: It also includes a mounting frame, which is mounted on the first supporting frame, and the labeling device is mounted on the mounting frame.

6. The automatic labeling machine according to claim 5, characterized in that: The mounting frame includes a first mounting plate and a second mounting plate, the first mounting plate is located above the second mounting plate, and the second mounting plate is located in front of the first mounting plate.

7. The automatic labeling machine according to claim 6, characterized in that: The unwinding shaft is horizontally arranged on the first mounting plate, the rewinding shaft is horizontally arranged on the second mounting plate, and the stripping plate is arranged on the second mounting plate.

8. The automatic labeling machine according to claim 1, characterized in that: The swing arm is arranged orthogonally to the rolling axis.

9. The automatic labeling machine according to claim 1, characterized in that: The rolling shaft comprises a fixed shaft and a shaft sleeve rotatably sleeved outside the fixed shaft, the fixed shaft is fixed to the second end of the swing arm, and the shaft sleeve is a flexible structure.

10. The automatic labeling machine according to claim 1, characterized in that: The first support frame includes a horizontal support and two vertical supports erected on the machine platform. The horizontal support is horizontally arranged and the two ends of the horizontal support are respectively connected to the vertical supports. The horizontal support can slide up and down relative to the vertical supports, and the labeling device is installed on the horizontal support.

11. The automatic labeling machine according to claim 10, characterized in that: The horizontal bracket includes a plurality of horizontally arranged horizontal bars and sliding seats arranged at both ends of the horizontal bars, and the vertical bracket includes a fixed seat installed on the machine platform and a plurality of vertical bars erected on the fixed seat, and the vertical bars are inserted into the sliding seat on the same side.

12. The automatic labeling machine according to claim 10, characterized in that: The first support frame also includes an adjustment mechanism for adjusting the upward and downward sliding movement of the cross support.

13. The automatic labeling machine according to claim 1, characterized in that: The automatic labeling machine further comprises two guide rods arranged along the conveying direction of the conveying device, the guide rods are arranged to be spaced apart, and the guide rods are also located above the conveying mechanism.

14. The automatic labeling machine according to claim 13, characterized in that: The guide rods can be slidably adjusted along the spacing direction to adjust the distance between the two guide rods.

15. The automatic labeling machine according to claim 14, characterized in that: The two ends of the guide rod are respectively provided with sliding columns, the machine platform is provided with sliding grooves for the sliding columns to pass through and slide, and the sliding columns are also provided with locking structures.

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