An annular product side decal application apparatus

Abstract

The utility model provides a kind of annular product side pad printing equipment, including body, pad printing mechanism being arranged on body, slide and first driving device, positioning mechanism being arranged on slide, first driving device is connected with slide;Positioning mechanism includes positioning assembly and limiting device;Positioning assembly includes seat, first motor, pivot and profiling positioning piece;Seat is installed on slide;First motor is installed in seat, and first motor is used to drive pivot rotation, pivot rotation is connected in seat, pivot is horizontally arranged along the direction perpendicular to the movement of slide, profiling positioning piece is fixedly connected to the first end of pivot, and the outer wall of profiling positioning piece is provided with profiling structure;Limiting device includes second driving device and limiting piece, limiting piece is installed on second driving device, and limiting piece moves to the side close to and away from profiling positioning piece under the drive of second driving device.Compared with prior art, the pad printing equipment of the utility model fixes product through profiling structure and limiting device, and the fixing effect is reliable.

Description

Technical Field

[0001] This utility model belongs to the field of pad printing equipment technology, specifically relating to a pad printing device for the side of a ring-shaped product. Background Technology

[0002] The outer surface of existing ring-shaped products is printed with patterns. Taking mineral water bottle caps as an example, some existing mineral water bottle caps have date information printed on the outer surface, which is usually done using pad printing equipment.

[0003] Pad printing equipment includes a pad printing mechanism and a positioning mechanism for fixing bottle caps. The positioning mechanism generally adopts an external support structure. For example, in the printing equipment disclosed in publication number CN111959113A, the positioning mechanism includes a support block, an inclined cone, a support column, a locking pin, a slide rod, and a spring. By rotating the support column, the inclined cone pushes the slide rod to extend and retract outward, and the spring keeps the slide rod in a stable state. The positioning mechanism of the above printing equipment adopts an external support structure.

[0004] However, externally supported positioning mechanisms require springs to provide elastic support for the slide bar, but spring fatigue or deformation can further exacerbate instability. Over long-term use, changes in the spring's elastic coefficient may lead to uneven clamping force, affecting compatibility with bottle caps of different sizes. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a pad printing device for the side of a ring-shaped product.

[0006] To achieve the above objectives, this utility model discloses a pad printing device for the side of a ring-shaped product, including a machine body, a pad printing mechanism, a slide, a first driving device, and a positioning mechanism. The pad printing mechanism, the slide, and the first driving device are disposed on the machine body. The first driving device is connected to the slide and is used to drive the slide to move left and right.

[0007] The positioning mechanism includes a positioning component and a limiting device;

[0008] The positioning assembly includes a base, a first motor, a rotating shaft, and a contour positioning component; the base is mounted on the slide; the first motor is mounted on the base, and its output end cooperates with the rotating shaft to drive the rotating shaft to rotate; the rotating shaft is rotatably connected to the base, and the rotating shaft is arranged horizontally along a direction perpendicular to the movement direction of the slide, with its first end extending out of the base; the contour positioning component is fixedly connected to the first end of the rotating shaft, and the outer wall of the contour positioning component is provided with a contour structure adapted to the product to be printed;

[0009] The limiting device includes a second driving device and a limiting member. The limiting member is mounted on the second driving device. Under the drive of the second driving device, the limiting member moves towards the side close to the contour positioning member, so that the limiting member abuts and cooperates with the product to be printed, and moves away from the contour positioning member.

[0010] Furthermore, the first driving device includes a second motor and a lead screw. One end of the lead screw is connected to the second motor, and the other end of the lead screw is rotatably connected to the machine body. The lead screw drives the slide to move through a nut.

[0011] Furthermore, both the first motor and the second motor are servo motors.

[0012] Furthermore, the contour positioning component is detachably connected to the rotating shaft.

[0013] Furthermore, the positioning component also includes a speed reducer, the input end of which is connected to the first motor and the rotating shaft, respectively.

[0014] Furthermore, the length direction of the first motor is perpendicular to the axis of the rotating shaft.

[0015] Furthermore, the second driving device is a telescopic cylinder, which has a telescopic rod, and the limiting member is rotatably connected to the telescopic rod.

[0016] Furthermore, the limiting member is coaxially arranged with the rotating shaft.

[0017] The working principle of printing patterns on the side of a circular product using pad printing equipment is as follows:

[0018] The outer wall of the contour positioning component is designed to mimic the inner wall of the product to be printed. During printing, the ring-shaped product is fitted onto the contour positioning component, and the contour structure initially fixes the ring-shaped product onto the contour positioning component. Then, the second driving device drives the limiting component to move closer to the contour positioning component, so that the limiting component abuts against the ring-shaped product, and the ring-shaped product is stably fixed on the contour positioning component.

[0019] During printing, the pad printing mechanism dips into the ink and moves to a position opposite to the ring-shaped product. Then, the first drive device drives the slide to move from one side of the ink on the pad printing mechanism to the other side of the ink. During the movement of the slide, the first motor simultaneously drives the rotating shaft to rotate, which in turn drives the contour positioning component to rotate. The ring-shaped product rotates synchronously, thereby transferring the ink pattern on the pad printing mechanism to the outer surface of the ring-shaped product.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] The outer wall of the contour positioning component is designed to conform to the inner wall of the product to be printed, which stably fixes the product to the contour fixing component. The limiting device further abuts against the end of the ring-shaped product, which greatly alleviates the problem of unreliable connection caused by errors between the contour fixing component and the ring-shaped product, improving the fixing stability of the ring-shaped product and enhancing the printing effect. This invention's ring-shaped product fixing method eliminates the need for a spring structure, avoiding clamping force attenuation or dimensional mismatch failure due to spring fatigue, thus improving reliability. Attached Figure Description

[0022] Figure 1 A three-dimensional structural schematic diagram of the pad printing equipment for the side of a ring-shaped product, as shown in the embodiment;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the middle slide, the first driving device, and the positioning mechanism;

[0024] Figure 3 for Figure 2 A schematic diagram of the three-dimensional exploded structure;

[0025] Figure 4 for Figure 1 A three-dimensional structural diagram of the positioning component;

[0026] Figure 5 for Figure 4 A schematic diagram of the three-dimensional exploded structure;

[0027] Figure 6 for Figure 1 A three-dimensional structural diagram of the middle limiting device;

[0028] Body 100; Guide rail 110;

[0029] 200 pad printing units;

[0030] Slide 300;

[0031] First drive unit 400; second motor 410; lead screw 420;

[0032] Positioning mechanism 500; positioning component 510; base 511; first motor 512; rotating shaft 513; contour positioning component 514; reducer 515; limiting device 520; second drive device 521; limiting component 522;

[0033] 600 ring-shaped products. Detailed Implementation

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] A pad printing device for the side of a ring-shaped product, see [link / reference] Figures 1-6 It includes a machine body 100, a pad printing mechanism 200, a slide 300, a first driving device 400, and a positioning mechanism 500.

[0036] In this embodiment, the pad printing mechanism 200 is mounted on the machine body 100 and includes a gravure plate, a printing head, etc. The printing head dips the ink on the gravure plate onto its surface and then transfers it to the outer side of the ring-shaped product to complete the printing on the ring-shaped product. The pad printing mechanism 200 in this embodiment adopts an existing pad printing mechanism 200, and its specific structure will not be described in detail. Figure 1 In this embodiment, the printing head is conical. Of course, since the equipment in this embodiment is mainly for printing on the outer side of the ring-shaped product 600, the ring-shaped product needs to rotate and move relative to the printing head during the printing process in order to receive the pattern on the printing head. Therefore, a printing head with a flat bottom surface can also be selected.

[0037] In this embodiment, the slide 300 is slidably connected to the body 100 via the guide rail 110. The first driving device 400 is mounted on the body 100 and connected to the slide 300, and is used to drive the slide 300 to move left and right.

[0038] The positioning mechanism 500 includes a positioning component 510 and a limiting device 520. The positioning component 510 includes a base 511, a first motor 512, a rotating shaft 513, and a contour positioning member 514. The base 511 is fixedly connected to the slide 300. The first motor 512 is mounted on the base 511, and its output end cooperates with the rotating shaft 513 to drive the rotating shaft 513 to rotate. The rotating shaft 513 is rotatably connected to the base 511 and is horizontally arranged perpendicular to the moving direction of the slide 300, with its first end extending out of the base 511. The contour positioning member 514 is fixedly connected to the first end of the rotating shaft 513. The outer wall of the contour positioning member 514 has a contour structure adapted to the product to be printed. For example, if the annular product has internal threads, the outer wall of the contour positioning member has external threads; if the annular product has protrusions, the contour positioning member has corresponding clearance grooves. The limiting device 520 includes a second driving device 521 and a limiting member 522. The second driving device 521 is fixedly connected to the slide 300, and the limiting member 522 is installed on the second driving device 521. Under the drive of the second driving device 521, the limiting member 522 moves towards the side closer to the contour positioning member 514, so that the limiting member 522 abuts and cooperates with the product to be printed, and moves away from the contour positioning member 514.

[0039] Because the outer wall of the contour positioning component 514 is designed to conform to the inner wall of the product to be printed, the annular product can be fixed on the contour positioning component 514. During feeding, the annular product is placed on the contour positioning component 514, and the contour structure initially fixes the annular product on the contour positioning component 514. Then, the second drive device 521 drives the limiting component 522 to move closer to the contour positioning component 514, so that the limiting component 522 abuts against the annular product, and the annular product is stably fixed on the contour positioning component 514. During printing, the pad printing mechanism 200 dips in ink and moves to a position opposite to the annular product. Then, the first drive device 400 drives the slide 300 to move from the side of the ink on the pad printing mechanism 200 to the other side of the ink. During the movement of the slide 300, the first motor 512 simultaneously drives the rotating shaft 513 to rotate. The rotating shaft 513 drives the contour positioning component 514 to rotate, and the annular product rotates synchronously, thereby transferring the ink pattern on the pad printing mechanism 200 to the outer side of the annular product, completing the printing.

[0040] The outer wall of the contour positioning component 514 is contoured, which stably fixes the product to the contour fixing component. The limiting component 522 of the limiting device 520 further abuts against the end of the ring-shaped product, which greatly alleviates the problem of unreliable connection caused by errors between the contour fixing component and the ring-shaped product, improves the fixing stability of the ring-shaped product, and enhances printing results. The ring-shaped product fixing method in this embodiment abandons the spring structure, avoiding clamping force attenuation or dimensional mismatch failure due to spring fatigue, thus improving reliability.

[0041] In this embodiment, the first driving device 400 includes a second motor 410 and a lead screw 420. One end of the lead screw 420 is connected to the second motor 410. A bearing seat is provided on the machine body 100, and a bearing is installed on the bearing seat. The other end of the lead screw 420 is connected to the bearing. The lead screw 420 drives the slide 300 to move through a nut. The nut can be a conventional nut or a threaded sleeve or other structure, and it is fixed to the bottom of the slide 300.

[0042] During the printing process, the moving speed of the slide 300 and the rotation speed of the contour positioning component 514 need to be matched to ensure that the ink is continuously and clearly printed onto the side of the ring-shaped product. In this embodiment, both the first motor 512 and the second motor 410 are servo motors, which can precisely control the moving speed of the slide 300 and the rotation speed of the contour positioning component 514, keeping them synchronized and improving the printing effect.

[0043] As can be seen from the accompanying drawings, both the first driving device and the positioning component in this embodiment include a protective cover that covers the motor.

[0044] In this embodiment, the length direction of the first motor 512 is perpendicular to the axis of the rotating shaft 513, which can greatly shorten the axial space occupied, especially suitable for scenarios with limited installation space, and can also reduce the axial travel requirement of the printing head of the pad printing mechanism 200.

[0045] In this embodiment, the positioning component 510 also includes a speed reducer 515. The first motor is mounted on the base via the speed reducer, and the input and output ends of the speed reducer 515 are connected to the first motor 512 and the rotating shaft 513, respectively. By setting the speed reducer 515, on the one hand, the reversing transmission between the first motor 512 and the rotating shaft 513 can be realized, and on the other hand, the output speed of the motor can be reduced to ensure that the moving speed of the slide 300 matches the product speed.

[0046] In this embodiment, the contour positioning component 514 is detachably connected to the rotating shaft 513, for example, by bolts. The detachable design of the contour fixing component not only facilitates the replacement and maintenance of the contour fixing component, but also allows for the selection of corresponding contour fixing components according to different products, enabling the equipment to print on a variety of ring-shaped products and improving its versatility.

[0047] In this embodiment, the second driving device 521 is a telescopic cylinder, such as a pneumatic cylinder. The telescopic cylinder has a telescopic rod, and a limiting member 522 is mounted on the telescopic rod. The limiting member 522 abuts against the product to be printed, specifically, the limiting member 522 only contacts the end face of the product without applying pressure, so as to significantly reduce the impact of the limiting member 522 on the rotation of the product.

[0048] In other alternative embodiments, the limiting member 522 is rotatably connected to the telescopic rod. For example, the limiting member 522 is connected to the telescopic rod of the telescopic cylinder via a bearing, thereby enabling the limiting member 522 to rotate. In this solution, the limiting member 522 is coaxially arranged with the rotating shaft 513. The limiting member 522 applies a small pushing force to the end face of the product. During the pad printing process, the limiting member 522 can rotate with the product, significantly reducing the impact of the limiting member 522 on the product rotation.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pad printing device for the side of a ring-shaped product, comprising a machine body, a pad printing mechanism, a slide, a first driving device, and a positioning mechanism, wherein the pad printing mechanism, the slide, and the first driving device are disposed on the machine body, and the first driving device is connected to the slide for driving the slide to move left and right, characterized in that: The positioning mechanism includes a positioning component and a limiting device; The positioning assembly includes a base, a first motor, a rotating shaft, and a contour positioning component; the base is mounted on the slide; the first motor is mounted on the base, and its output end cooperates with the rotating shaft to drive the rotating shaft to rotate; the rotating shaft is rotatably connected to the base, and the rotating shaft is arranged horizontally along a direction perpendicular to the movement direction of the slide, with its first end extending out of the base; the contour positioning component is fixedly connected to the first end of the rotating shaft, and the outer wall of the contour positioning component is provided with a contour structure adapted to the product to be printed; The limiting device includes a second driving device and a limiting member. The limiting member is mounted on the second driving device. Under the drive of the second driving device, the limiting member moves towards the side close to the contour positioning member, so that the limiting member abuts and cooperates with the product to be printed, and moves away from the contour positioning member.

2. The pad printing equipment for the side of an annular product according to claim 1, characterized in that: The first driving device includes a second motor and a lead screw. One end of the lead screw is connected to the second motor, and the other end of the lead screw is rotatably connected to the machine body. The lead screw drives the slide to move through a nut.

3. The pad printing equipment for the side of an annular product according to claim 2, characterized in that: Both the first motor and the second motor are servo motors.

4. The pad printing equipment for the side of an annular product according to claim 1, characterized in that: The contour positioning component is detachably connected to the rotating shaft.

5. The pad printing equipment for the side of an annular product according to claim 1, characterized in that: The positioning component also includes a speed reducer, the input end of which is connected to the first motor and the rotating shaft, respectively.

6. The pad printing equipment for the side of an annular product according to claim 5, characterized in that: The length direction of the first motor is perpendicular to the axis of the rotating shaft.

7. The pad printing equipment for the side of an annular product according to claim 1, characterized in that: The second driving device is a telescopic cylinder, which has a telescopic rod, and the limiting member is rotatably connected to the telescopic rod.

8. The pad printing equipment for the side of an annular product according to claim 7, characterized in that: The limiting member is coaxially arranged with the rotating shaft.

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