In-mold automatic labeling device and labeling method thereof

Abstract

The invention provides an in-mold automatic labeling device which comprises a labeling assembly, and the labeling assembly comprises a supporting frame, a conveying belt, two transmission rollers, a driving motor, a labeling jig, a connecting base, a material taking plate, two mounting bases, a material taking assembly, four sliding grooves, four guide rods and a pushing air cylinder. The conveying belt is installed on the outer side walls of the two transmission rollers. The material taking assembly is used for taking out a product on a male mold, the labeling jig is used for labeling in a mold cavity, by arranging the structures such as the pushing air cylinder, the guide rod and the material taking plate, telescopic adjustment of the material taking assembly can be achieved, the material taking assembly can stretch out and draw back in the material taking process, and then the size of the labeling assembly can be reduced; the labeling jig and the material taking assembly work independently, compared with the prior art, through the movable design, the occupied space is small in the working process, the working space is increased, and the operation difficulty of labeling and product taking out is reduced.

Description

Technical Field

[0001] The invention relates to a labeling device and a labeling method thereof, in particular to an automatic in-mold labeling device and a labeling method thereof, and belongs to the technical field of injection molding. Background Art

[0002] The in-mold automatic labeling device, also known as the in-mold labeling machine, is an automated device that labels products inside the mold. This device is widely used in the production process of plastic, glass and other containers. It can accurately attach labels to the surface of the product while the product is being formed, improving production efficiency and labeling quality. When the in-mold automatic labeling device is working, during the mold opening stage, the labeling device will send the pre-prepared label into the mold. As the mold closes, the label is pressed on the surface of the product and integrated with the product. When the mold is opened again, the labeled product is taken out, and the labeling device continues to prepare labels for the next product.

[0003] When injection molding deep container products, due to the large depth of the product itself, when using an injection molding machine with normal mold closing stroke specifications, the in-mold labeling robot cannot remove the product from the punch and exit the mold cavity of the injection molding machine when placing the label paper into the concave mold of the injection mold due to the limitation of the injection molding machine's mold opening stroke.

[0004] The known Chinese public authorized invention (publication number: CN104139489B) discloses an automatic labeling device in an injection mold, which adopts a take-out robot fixed on an existing labeling robot arm. The take-out robot has an independent driving mechanism. After entering the mold cavity together with the labeling robot arm and before performing the labeling action, the product removal jig on the take-out robot arm absorbs the product completed by the last injection molding, and while the labeling robot arm moves toward the concave mold to perform the labeling action, the product is separated from the convex mold, and then the product removal jig exits the mold cavity of the injection molding machine, so that the labeling robot arm with the labeling jig has enough space to exit the concave mold of the injection molding machine;

[0005] Although it meets the requirement of a larger mold opening stroke for the labeling robot arm when labeling and removing products, when taking out the product, the positions of the labeling jig and the product removal jig are relative, which will occupy a larger space between the molds, reduce the working space, and increase the difficulty of labeling and removing products. Therefore, an in-mold automatic labeling device and a labeling method thereof are proposed. Summary of the invention

[0006] In view of this, the present invention provides an in-mold automatic labeling device and a labeling method thereof to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the present invention is implemented as follows: an in-mold automatic labeling device includes a labeling assembly, wherein the labeling assembly includes a support frame, a conveyor belt, two transmission rollers, a drive motor, a labeling fixture, a connecting seat, a material picking plate, two mounting seats, a material picking assembly, four slide slots, four guide rods and a push cylinder;

[0008] The conveyor belt is installed on the outer side walls of two transmission rollers, two of the transmission rollers are installed inside the support frame, a roller shaft of one of the transmission rollers is fixedly connected to the output shaft of the driving motor, the connecting seat is fixedly connected to the rear part of the support frame, the two mounting seats are symmetrically installed on the outer side walls of the conveyor belt, the labeling jig is installed on one side of a mounting seat, the pushing cylinder is installed on one side of the other mounting seat, the four guide rods are symmetrically fixedly connected to one side of the feeding plate, the guide rods are slidably connected to the inside of the mounting seat away from the labeling jig, the four slide grooves are symmetrically opened inside the feeding plate, and the feeding assembly is installed inside the slide grooves.

[0009] Further preferably, the material taking assembly comprises a vacuum suction cup, a locking nut, a connecting stud, a base and a suction cup seat;

[0010] The vacuum suction cup is fixedly connected to one end of the suction cup seat, the other end of the suction cup seat is fixedly connected to one end of the connecting stud, the other end of the connecting stud is fixedly connected to one side of the base, and the locking nut is threadedly connected to the outer side wall of the connecting stud.

[0011] Further preferably, the outer side wall of the locking nut is slidably connected to the inner side wall of the slide groove, the adjacent surfaces of the locking nut and the base are symmetrically fitted to the two sides of the feeding plate, and the base is slidably connected to the feeding plate.

[0012] Further preferably, the material picking plate is fixedly connected to the cylinder shaft of the pushing cylinder, and the pushing cylinder is located between the mounting seat and the conveyor belt.

[0013] Further preferably, the driving motor is mounted on the upper surface of the support frame, the conveyor belt is located inside the support frame, the conveyor belt is a toothed belt, and the shape of the conveyor belt is matched with the shape of the driving roller.

[0014] Further preferably, the material picking assembly and the labeling jig are located on both sides of the conveyor belt.

[0015] Further preferably, a driving assembly is fixedly connected to the rear surface of the connecting seat, and the driving assembly includes a frame, two Y guide rails, a mechanical arm and an X guide rail;

[0016] The X-guide rail is fixedly connected to the movers of the two Y-guide rails, the two Y-guide rails are symmetrically mounted on the top of the frame, and the mechanical arm is mounted on the movers of the X-guide rails.

[0017] Further preferably, the connecting seat is installed at the front end of the mechanical arm, and the mechanical arm is located inside the frame.

[0018] Further preferably, a control box is installed on one side of the rack.

[0019] A labeling method comprises the following steps:

[0020] Step 1: The injection molding machine opens the mold, and the robotic arm drives the labeling component to move between the punch and the mold cavity;

[0021] Step 2: The driving motor drives the transmission roller to rotate, the conveyor belt drives the labeling jig away from the mold, the labeling jig takes the label, and the material taking component moves to the position corresponding to the punch;

[0022] Step 3: Push the cylinder to push the material picking plate, the material picking plate drives the material picking component close to the product, and the vacuum suction cup absorbs the product to pick up the material;

[0023] Step 4: The drive motor reverses, and the vacuum suction cup drives the product away from the mold to complete the material removal process. At the same time, the labeling fixture moves to the position corresponding to the mold cavity;

[0024] Step 5: The X-guide rail drives the labeling fixture to move into the mold cavity, and the labeling process is completed;

[0025] Step 6: The X-guide rail is reset, the robotic arm drives the labeling component away from the mold, and the injection molding machine starts injection molding.

[0026] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0027] 1. The present invention drives the transmission roller through a driving motor, and the transmission roller drives the conveyor belt, so that the positions of the labeling jig and the material picking component can be exchanged. During the labeling process, the material picking component is used to take out the product on the male mold, and the labeling jig is used to label in the mold cavity. By setting structures such as a pushing cylinder, a guide rod and a material picking plate, the telescopic adjustment of the material picking component can be realized. It can be extended when picking up materials and shortened during movement, thereby reducing the size of the labeling component. During the labeling and material picking process, the labeling jig and the material picking component work separately. Compared with the prior art, the movable design occupies less space during operation, increases the working space, and reduces the difficulty of labeling and taking out products.

[0028] Second, the present invention can adsorb products through the vacuum suction cup, and the position of the material picking component can be fixed by the locking nut. When the locking nut is loosened, the material picking component can slide along the slide groove, and then the position of the vacuum suction cup can be adjusted to adsorb and discharge products of different sizes, thereby enhancing the overall adaptability.

[0029] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a structural diagram of the automatic in-mold labeling device of the present invention;

[0032] Figure 2 It is a structural diagram of the labeling assembly of the present invention;

[0033] Figure 3 It is a structural diagram of a conveyor belt of the present invention;

[0034] Figure 4 It is a schematic diagram of the connection between the material taking component and the material taking plate of the present invention;

[0035] Figure 5 It is a structural diagram of the material taking plate of the present invention;

[0036] Figure 6 This is a structural diagram of the labeling fixture of the present invention;

[0037] Figure 7 It is a structural diagram of the material taking component of the present invention.

[0038] Figure numerals: 101, labeling assembly; 11, support frame; 12, conveyor belt; 13, transmission roller; 14, driving motor; 15, labeling fixture; 16, connecting seat; 17, material picking plate; 18, mounting seat; 19, material picking assembly; 20, slide; 21, guide rod; 22, pushing cylinder; 191, vacuum suction cup; 192, locking nut; 193, connecting stud; 194, base; 195, suction cup seat; 301, driving assembly; 31, frame; 32, Y guide rail; 33, control box; 34, robotic arm; 35, X guide rail. DETAILED DESCRIPTION

[0039] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0040] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0041] like Figure 1-7 As shown, an embodiment of the present invention provides an in-mold automatic labeling device, including a labeling component 101, the labeling component 101 includes a support frame 11, a conveyor belt 12, two transmission rollers 13, a drive motor 14, a labeling fixture 15, a connecting seat 16, a material picking plate 17, two mounting seats 18, a material picking component 19, four slide slots 20, four guide rods 21 and a push cylinder 22;

[0042] The conveyor belt 12 is installed on the outer side walls of two transmission rollers 13, and the two transmission rollers 13 are installed inside the support frame 11. The roller shaft of one transmission roller 13 is fixedly connected to the output shaft of the driving motor 14. The connecting seat 16 is fixedly connected to the rear part of the support frame 11. Two mounting seats 18 are symmetrically installed on the outer side walls of the conveyor belt 12. The labeling fixture 15 is installed on one side of one mounting seat 18, and the pushing cylinder 22 is installed on one side of the other mounting seat 18. Four guide rods 21 are symmetrically fixedly connected to one side of the material picking plate 17. The guide rods 21 are slidably connected to the inside of the mounting seat 18 away from the labeling fixture 15. Four slide grooves 20 are symmetrically opened inside the material picking plate 17. A material picking assembly 19 is installed inside the slide groove 20. The material picking assembly 19 and the labeling fixture 15 are located on both sides of the conveyor belt 12.

[0043] During the labeling process, the picking component 19 is used to take out the product from the male mold, and the labeling fixture 15 is used to label in the mold cavity. By setting structures such as the pushing cylinder 22, the guide rod 21 and the picking plate 17, the picking component 19 can be telescopically adjusted, extending when picking up materials and shortening during movement, thereby reducing the size of the labeling component 101 to be suitable for a small working space.

[0044] In one embodiment, the material picking assembly 19 includes a vacuum suction cup 191, a locking nut 192, a connecting stud 193, a base 194 and a suction cup seat 195;

[0045] The vacuum suction cup 191 is fixedly connected to one end of the suction cup seat 195, the other end of the suction cup seat 195 is fixedly connected to one end of the connecting stud 193, the other end of the connecting stud 193 is fixedly connected to one side of the base 194, and the locking nut 192 is threadedly connected to the outer side wall of the connecting stud 193;

[0046] The outer wall of the locking nut 192 is slidably connected to the inner wall of the slide groove 20, and the adjacent surfaces of the locking nut 192 and the base 194 are symmetrically attached to the two sides of the material taking plate 17, and the base 194 is slidably connected to the material taking plate 17;

[0047] When picking up materials, the product can be adsorbed by the vacuum suction cup 191, and the position of the picking component 19 can be fixed by the locking nut 192. When the locking nut 192 is loosened, the picking component 19 can slide along the slide groove 20, and then the position of the vacuum suction cup 191 can be adjusted to adsorb and discharge products of different sizes, thereby enhancing the overall adaptability.

[0048] In one embodiment, the material picking plate 17 is fixedly connected to the cylinder shaft of the pushing cylinder 22, the pushing cylinder 22 is located between the mounting seat 18 and the conveyor belt 12, the driving motor 14 is installed on the upper surface of the support frame 11, the conveyor belt 12 is located inside the support frame 11, the conveyor belt 12 is a toothed belt, and the shape of the conveyor belt 12 is adapted to the shape of the transmission roller 13. The transmission roller 13 is driven by the driving motor 14, and the transmission roller 13 drives the conveyor belt 12. The positions of the labeling jig 15 and the material picking assembly 19 can be swapped. During the labeling and material picking process, the labeling jig 15 and the material picking assembly 19 work separately. Compared with the prior art, the movable design occupies less space during work, increases the working space, and reduces the difficulty of labeling and taking out products.

[0049] In one embodiment, a driving assembly 301 is fixedly connected to the rear surface of the connecting seat 16, and the driving assembly 301 includes a frame 31, two Y guide rails 32, a mechanical arm 34 and an X guide rail 35;

[0050] The X-guide rail 35 is fixedly connected to the movers of the two Y-guide rails 32, the two Y-guide rails 32 are symmetrically mounted on the top of the frame 31, the mechanical arm 34 is mounted on the movers of the X-guide rail 35, the connecting seat 16 is mounted on the front end of the mechanical arm 34, and the mechanical arm 34 is located inside the frame 31;

[0051] The connection between the robot arm 34 and the labeling assembly 101 can be achieved through the connecting seat 16, and the robot arm 34 can realize Z-direction movement, and then with the cooperation of the Y-direction guide rail 32 and the X-direction guide rail 35, the automatic movement of the labeling assembly 101 can be realized.

[0052] In one embodiment, a control box 33 is installed on one side of the frame 31 , and a PLC programmable controller is disposed in the control box 33 .

[0053] A labeling method comprises the following steps:

[0054] Step 1: The injection molding machine opens the mold, and the robotic arm drives the labeling component to move between the punch and the mold cavity;

[0055] Step 2: The driving motor drives the transmission roller to rotate, the conveyor belt drives the labeling jig away from the mold, the labeling jig takes the label, and the material taking component moves to the position corresponding to the punch;

[0056] Step 3: Push the cylinder to push the material picking plate, the material picking plate drives the material picking component close to the product, and the vacuum suction cup absorbs the product to pick up the material;

[0057] Step 4: The drive motor reverses, and the vacuum suction cup drives the product away from the mold to complete the material removal process. At the same time, the labeling fixture moves to the position corresponding to the mold cavity;

[0058] Step 5: The X-guide rail drives the labeling fixture to move into the mold cavity, and the labeling process is completed;

[0059] Step 6: The X-guide rail is reset, the robotic arm drives the labeling component away from the mold, and the injection molding machine starts injection molding.

[0060] When the present invention is working: the injection molding machine opens the mold, the mechanical arm 34 drives the labeling component 101 to move between the punch and the mold cavity, and drives the transmission roller 13 to rotate through the driving motor 14, and the conveyor belt 12 drives the labeling fixture 15 away from the mold, and the labeling fixture 15 takes the label. At the same time, the material taking component 19 moves to the position corresponding to the punch, and the material taking plate 17 is pushed by the pushing cylinder 22, and the material taking plate 17 drives the material taking component 19 to approach the product, and the vacuum suction cup 191 absorbs and takes the product. After the product is adsorbed, the driving motor 14 is reversed, and the vacuum suction cup 191 drives the product away from the mold, and the material taking process is completed. At the same time, the labeling fixture 15 moves to the position corresponding to the mold cavity, and drives the labeling fixture 15 to move into the mold cavity through the X-guide rail 35 to complete the labeling process, and drives the mechanical arm 34 to reset through the X-guide rail 35, and the mechanical arm 34 drives the labeling component 101 away from the mold, and the injection molding machine starts injection molding. Repeating the above actions can achieve continuous operation.

[0061] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An in-mold automatic labeling device, comprising a labeling component (101), characterized in that: The labeling assembly (101) comprises a support frame (11), a conveyor belt (12), two transmission rollers (13), a driving motor (14), a labeling fixture (15), a connecting seat (16), a material taking plate (17), two mounting seats (18), a material taking assembly (19), four slide slots (20), four guide rods (21) and a pushing cylinder (22); The conveyor belt (12) is mounted on the outer side walls of two transmission rollers (13), the two transmission rollers (13) are mounted inside the support frame (11), the roller shaft of one transmission roller (13) is fixedly connected to the output shaft of the driving motor (14), the connecting seat (16) is fixedly connected to the rear part of the support frame (11), the two mounting seats (18) are symmetrically mounted on the outer side walls of the conveyor belt (12), the labeling jig (15) is mounted on one side of one mounting seat (18), the pushing cylinder (22) is mounted on one side of the other mounting seat (18), the four guide rods (21) are symmetrically fixedly connected to one side of the material picking plate (17), the guide rods (21) are slidably connected to the inside of the mounting seat (18) away from the labeling jig (15), the four slide grooves (20) are symmetrically opened inside the material picking plate (17), and the inside of the slide grooves (20) is equipped with a material picking assembly (19).

2. The in-mold automatic labeling device according to claim 1, characterized in that: The material taking assembly (19) comprises a vacuum suction cup (191), a locking nut (192), a connecting stud (193), a base (194) and a suction cup seat (195); The vacuum suction cup (191) is fixedly connected to one end of the suction cup seat (195), the other end of the suction cup seat (195) is fixedly connected to one end of the connecting stud (193), the other end of the connecting stud (193) is fixedly connected to one side of the base (194), and the locking nut (192) is threadedly connected to the outer side wall of the connecting stud (193).

3. The in-mold automatic labeling device according to claim 2, characterized in that: The outer wall of the locking nut (192) is slidably connected to the inner wall of the slide groove (20), the adjacent surfaces of the locking nut (192) and the base (194) are symmetrically attached to the two sides of the material taking plate (17), and the base (194) is slidably connected to the material taking plate (17).

4. The automatic in-mold labeling device according to claim 3, characterized in that: The material taking plate (17) is fixedly connected to the cylinder shaft of the pushing cylinder (22), and the pushing cylinder (22) is located between the mounting seat (18) and the conveyor belt (12).

5. The in-mold automatic labeling device according to claim 4, characterized in that: The driving motor (14) is installed on the upper surface of the support frame (11), and the conveyor belt (12) is located inside the support frame (11). The conveyor belt (12) is a toothed belt, and the shape of the conveyor belt (12) is compatible with the shape of the driving roller (13).

6. The automatic in-mold labeling device according to claim 5, characterized in that: The material taking assembly (19) and the labeling fixture (15) are located on both sides of the conveyor belt (12).

7. The automatic in-mold labeling device according to claim 6, characterized in that: A driving assembly (301) is fixedly connected to the rear surface of the connecting seat (16), and the driving assembly (301) comprises a frame (31), two Y-direction guide rails (32), a mechanical arm (34) and an X-direction guide rail (35); The X-direction guide rail (35) is fixedly connected to the movers of the two Y-direction guide rails (32); the two Y-direction guide rails (32) are symmetrically mounted on the top of the frame (31); and the mechanical arm (34) is mounted on the movers of the X-direction guide rail (35).

8. The automatic in-mold labeling device according to claim 7, characterized in that: The connecting seat (16) is installed at the front end of a mechanical arm (34), and the mechanical arm (34) is located inside the frame (31).

9. The automatic in-mold labeling device according to claim 8, characterized in that: A control box (33) is installed on one side of the frame (31).

10. A labeling method, applied to the in-mold automatic labeling device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: The injection molding machine opens the mold, and the robotic arm drives the labeling component to move between the punch and the mold cavity; Step 2: The driving motor drives the transmission roller to rotate, the conveyor belt drives the labeling jig away from the mold, the labeling jig takes the label, and the material taking component moves to the position corresponding to the punch; Step 3: Push the cylinder to push the material picking plate, the material picking plate drives the material picking component close to the product, and the vacuum suction cup absorbs the product to pick up the material; Step 4: The drive motor reverses, and the vacuum suction cup drives the product away from the mold to complete the material removal process. At the same time, the labeling fixture moves to the position corresponding to the mold cavity; Step 5: The X-guide rail drives the labeling fixture to move into the mold cavity, and the labeling process is completed; Step 6: The X-guide rail is reset, the robotic arm drives the labeling component away from the mold, and the injection molding machine starts injection molding.

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