Full-automatic visual positioning pad printing machine

Abstract

The utility model relates to a full-automatic visual positioning pad printing machine which comprises a machine frame and a control system, a visual mechanism, a positioning and transferring mechanism and a pad printing mechanism are arranged in the machine frame, and the visual mechanism, the positioning and transferring mechanism and the pad printing mechanism are all connected with the control system. The positioning transfer mechanism comprises a sliding rail and a positioning clamping table connected to the sliding rail in a sliding mode, the visual mechanism comprises a support and a mounting plate arranged on the support, the mounting plate extends to the position above one end of the sliding rail, at least four camera modules are mounted on the mounting plate, each camera module comprises an adjusting assembly and a camera mounted on the adjusting assembly, and the adjusting assemblies are arranged on the support. The adjusting assembly is used for adjusting the positions of the camera in the X direction, the Y direction and the Z direction. The at least four camera modules are arranged to collect multiple pieces of position information of the workpiece, so that the positioning precision is effectively improved; the position of each camera in the X, Y and Z directions can be adjusted according to the requirements of workpieces, and the device is suitable for workpieces in a wide size range and also suitable for workpieces with curved surfaces.

Description

Technical Field

[0001] The utility model relates to the field of pad printing equipment, in particular to a full-automatic vision positioning pad printer. Background Art

[0002] Pad printing is an indirect concave rubber head printing technology and has become a main method for printing and decorating various object surfaces. To ensure accurate printing positions on products, it is necessary to accurately position the products before the pad printing operation starts. In the prior art, visual means such as CCD cameras are generally used to perform full-automatic positioning on products. For example, Chinese Utility Model Patent CN210590990U discloses a positioning mechanism for a pad printer. Before the pad printer prints, a product positioning mechanism takes pictures and positions the products arranged on a positioning platform. The product positioning mechanism includes an industrial camera. However, only one industrial camera is provided in this product positioning mechanism, which can only position small-sized products and cannot accurately detect and position products with curved surfaces, with a small application range and low positioning accuracy.

[0003] Therefore, it is necessary to provide a technical solution to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a full-automatic vision positioning pad printer, which can solve the technical problems in the prior art that only one industrial camera is provided in the product positioning mechanism, which can only position small-sized products and cannot accurately detect and position products with curved surfaces, with a small application range and low positioning accuracy.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A full-automatic vision positioning pad printer includes a frame and a control system. A vision mechanism, a positioning and transfer mechanism, and a pad printing mechanism are arranged in the frame. The vision mechanism, the positioning and transfer mechanism, and the pad printing mechanism are all connected to the control system. The positioning and transfer mechanism includes a slide rail and a positioning clamping table slidably connected to the slide rail. The vision mechanism includes a bracket and a mounting plate arranged on the bracket. The mounting plate extends above one end of the slide rail. At least four camera modules are mounted on the mounting plate. Each camera module includes an adjusting component and a camera mounted on the adjusting component. The adjusting component is used to adjust the position of the camera in the X direction, Y direction, and Z direction.

[0007] Further, there are six camera modules. The adjusting components in each camera module are arranged on the outside and the cameras are arranged on the inside. The six camera modules are divided into two groups and are arranged on the mounting plate in a mirror-symmetrical manner. Each group of camera modules is arranged in a "pin" shape.

[0008] Furthermore, the adjustment component includes a fixed block, a first movable block, and a second movable block which are arranged in sequence from bottom to top, a third movable block is arranged on one side of the second movable block, the camera is installed on the third movable block, the first movable block can move along the X direction or the Y direction, the moving direction of the second movable block is perpendicular to the moving direction of the first movable block, and the third movable block can move along the Z direction.

[0009] Further, the upper surface of the fixed block is provided with a first guide block or a first guide groove, and correspondingly, the lower surface of the first movable block is provided with a matching first guide groove or a first guide block, the upper surface of the first movable block is provided with a second guide block or a second guide groove, and correspondingly, the lower surface of the second movable block is provided with a matching second guide groove or a second guide block, the side surface of the second movable block connected to the third movable block is provided with a third guide block or a third guide groove, and correspondingly, the side surface of the third movable block connected to the second movable block is provided with a third guide groove or a third guide block.

[0010] Furthermore, the adjustment assembly also includes a first adjustment screw, a second adjustment screw and a third adjustment screw, and the first adjustment screw, the second adjustment screw and the third adjustment screw are respectively used to drive the first moving block, the second moving block and the third moving block to move.

[0011] Furthermore, a fourth adjusting screw is provided on the bracket, and the fourth adjusting screw is used to drive the mounting plate to move along the Z direction.

[0012] Furthermore, the positioning clamp includes a positioning seat and a clamping seat arranged above the positioning seat, the positioning seat is slidably connected to the slide rail, and a driving mechanism is arranged in the positioning seat, and the driving mechanism is used to drive the clamping seat to move along the X direction and the Y direction, and to rotate along the horizontal plane.

[0013] Furthermore, it also includes a cleaning mechanism, which is arranged on the rear side of the slide rail.

[0014] Furthermore, the pad printing mechanism includes a pad printing rubber head and an ink supply assembly, the ink supply assembly is arranged between the slide rail and the cleaning mechanism, the pad printing rubber head is arranged above the slide rail and the pad printing rubber head can move along the Y direction and the Z direction.

[0015] Furthermore, it also includes a heat-blowing mechanism, which is arranged above the other end of the slide rail.

[0016] Beneficial effects of the utility model:

[0017] (1) By setting at least four camera modules in the fully automatic visual positioning pad printing machine, it is possible to collect image information of multiple positions of the workpiece, and comprehensively judge the position of the workpiece through the image information of multiple positions, thereby effectively improving the positioning accuracy; and the adjustment component in each camera module can adjust the position of the corresponding camera in the X direction, Y direction and Z direction according to the size of the workpiece and the thickness of the corresponding position. In this way, the visual mechanism can be applied to workpieces with a wide range of sizes and can also be applied to workpieces with curved surfaces, and has strong applicability;

[0018] (2) By providing a driving mechanism in the positioning seat to drive the clamping seat to move, when the visual mechanism collects the position information of the workpiece and sends it to the control system, the control system determines whether there is a deviation in the position of the workpiece based on the position information. If there is a deviation, the control system controls the driving mechanism in the positioning seat to drive the clamping seat to move, so as to adjust the workpiece to the correct position by automatically adjusting the position of the clamping seat, thereby ensuring the positioning accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the fully automatic visual positioning pad printing machine of the present utility model.

[0020] Figure 2 This is a schematic diagram of the overall structure of the fully automatic visual positioning pad printing machine of the present utility model from another angle.

[0021] Figure 3 It is a structural schematic diagram of the visual mechanism of the utility model.

[0022] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0023] Figure 5 It is a partial structural schematic diagram of the fully automatic visual positioning pad printing machine of the utility model.

[0024] Description of reference numerals:

[0025] 1-frame; 2-visual mechanism; 21-bracket; 22-mounting plate; 23-camera module; 231-adjusting assembly; 2311-fixed block; 2312-first moving block; 2313-second moving block; 2314-third moving block; 2315-first adjusting screw; 2316-second adjusting screw; 2317-third adjusting screw; 2318-fixed seat; 2319-adjusting block; 232-camera; 3-positioning and transferring mechanism; 31-slide rail; 32-positioning clamping table; 321-positioning seat; 322-clamping seat; 41-pad printing rubber head; 42-ink supply assembly; 5-cleaning mechanism; 51-tape unwinding roll; 52-tape receiving roll; 53-cleaning platform; 54-first rotating shaft; 55-second rotating shaft; 56-driving motor; 6-hot air blowing mechanism; 61-mounting frame; 62-air outlet duct. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0027] like Figures 1 to 5 As shown, the utility model provides a fully automatic visual positioning pad printing machine, including a frame 1 and a control system, wherein the frame 1 is provided with a visual mechanism 2, a positioning and transferring mechanism 3 and a pad printing mechanism, wherein the visual mechanism 2, the positioning and transferring mechanism 3 and the pad printing mechanism are all connected to the control system; the positioning and transferring mechanism 3 includes a slide rail 31 and a positioning clamp 32 slidably connected to the slide rail 31, the visual mechanism includes a bracket 21 and a mounting plate 22 arranged on the bracket 21, the mounting plate 22 extends to above one end of the slide rail 31, at least four camera modules 23 are installed on the mounting plate 22, the camera module 23 includes an adjustment component 231 and a camera 232 installed on the adjustment component 231, and the adjustment component 231 is used to adjust the position of the camera 232 in the X direction, the Y direction and the Z direction.

[0028] In actual operation, first, the positioning clamp 32 is located at one end of the slide rail 31, and the workpiece is placed in the positioning clamp 32 manually or by a robot. Then, the visual mechanism 2 located above one end of the slide rail 31 collects the position information of the workpiece and sends it to the control system. The control system determines whether there is a deviation in the position of the workpiece based on the position information. If there is a deviation, the control system controls the positioning clamp 32 to adjust the position of the workpiece to the correct position. Then the control system controls the positioning clamp 32 to move along the slide rail 31 to the other end, and the pad printing mechanism performs pad printing on the workpiece. After the pad printing is completed, the control system controls the positioning clamp 32 to reset to one end of the slide rail 31, and the workpiece is unloaded manually or by a robot. After the unloading is completed, the next loading is performed, and the cycle is repeated.

[0029] In this embodiment, at least four camera modules 23 are arranged in the full-automatic vision positioning pad printer, which can collect the image information of multiple positions of the workpiece. The position of the workpiece is comprehensively judged through the image information of multiple positions, effectively improving the positioning accuracy. Moreover, the adjustment components 231 in each camera module 23 can adjust the positions of the corresponding cameras 232 in the X direction, Y direction, and Z direction according to the size of the workpiece and the thickness of the corresponding position. In this way, the vision mechanism 2 can be applicable to workpieces with a wide size range and can also be applicable to products with curved surfaces, with strong applicability.

[0030] Further, as Figure 3 shown, there are six camera modules 23, and the adjustment components 231 in each camera module 23 are arranged on the outside, and the cameras 232 are arranged on the inside. The six camera modules 23 are divided into two groups and are arranged in a mirror symmetry on the mounting plate 22, and each group of camera modules 23 is arranged in a "pin" shape. In this embodiment, by reasonably setting the number and positions of the camera modules 23, the image information of the peripheral positions of the workpiece can be effectively collected, so that the control system can accurately judge the position of the workpiece.

[0031] Further, as Figure 3-4 shown, the adjustment component 231 includes a fixed block 2311, a first moving block 2312, and a second moving block 2313 arranged in sequence from bottom to top. A third moving block 2314 is arranged on one side of the second moving block 2313, and the camera 232 is installed on the third moving block 2314. The first moving block 2312 can move in the X direction or Y direction, the moving direction of the second moving block 2313 is perpendicular to the moving direction of the first moving block 2312, and the third moving block 2314 can move in the Z direction. In this embodiment, the positions of the camera 232 in the X direction, Y direction, and Z direction are adjusted by the movement of the first moving block 2312, the second moving block 2313, and the third moving block 2314 to adapt to workpieces of different sizes and thicknesses.

[0032] Further, as Figure 3-4As shown, the upper surface of the fixed block 2311 is provided with a first guide block or a first guide groove, and the lower surface of the first moving block 2312 is provided with a matching first guide groove or a first guide block, the upper surface of the first moving block 2312 is provided with a second guide block or a second guide groove, and the lower surface of the second moving block 2313 is provided with a matching second guide groove or a second guide block, and the side where the second moving block 2313 is connected to the third moving block 2314 is provided with a third guide block or a third guide groove, and the side where the third moving block 2314 is connected to the second moving block 2313 is provided with a third guide groove or a third guide block. Specifically, the first to third guide blocks are dovetail-shaped, and the first to third guide grooves are also dovetail-shaped. In this embodiment, the movement directions of the first moving block 2312, the second moving block 2313 and the third moving block 2314 can be effectively limited by the cooperation of the guide blocks and the guide grooves.

[0033] Furthermore, if Figure 3-4 As shown, the adjustment assembly 231 also includes a first adjustment screw 2315, a second adjustment screw 2316 and a third adjustment screw 2317, and the first adjustment screw 2315, the second adjustment screw 2316 and the third adjustment screw 2317 are respectively used to drive the first moving block 2312, the second moving block 2313 and the third moving block 2314 to move. The specific installation method of the three adjusting screws is explained by taking the second adjusting screw 2316 as an example. A fixed seat 2318 is arranged on one side of the first moving block 2312, and an adjusting block 2319 is arranged on the same side of the second moving block 2313. The second adjusting screw 2316 is rotatably arranged in the fixed seat 2318, and the threaded end of the second adjusting screw 2316 is threadedly connected with the adjusting block 2319. When the knob end of the second adjusting screw 2316 is screwed, the second adjusting screw 2316 can only rotate relative to the fixed seat 2318 but cannot move. Due to the limiting effect of the second guide groove and the second guide block, the second moving block can move forward and backward along the axial direction of the second adjusting screw 2316, thereby realizing the adjustment of the position of the camera 232. The installation method of the first adjusting screw 2315 and the third adjusting screw 2317 is similar and will not be repeated here.

[0034] Furthermore, a fourth adjusting screw is provided on the bracket 21, and the fourth adjusting screw is used to drive the mounting plate 22 to move along the Z direction. In this embodiment, the mounting plate 22 is slidably connected to the bracket 21, and a fourth adjusting screw is rotatably provided on the bracket 21, and the threaded end of the fourth adjusting screw is threadedly connected to the mounting plate 22. By screwing the knob end of the fourth adjusting screw, the mounting plate 22 can be driven to move up and down along the Z direction, so that the positions of all cameras in the Z direction can be quickly and synchronously adjusted.

[0035] Furthermore, the positioning clamp 32 includes a positioning seat 321 and a clamping seat 322 arranged above the positioning seat 321, the positioning seat 321 is slidably connected to the slide rail 31, and a driving mechanism is arranged in the positioning seat 321, and the driving mechanism is used to drive the clamping seat 322 to move along the X direction and the Y direction, and to rotate along the horizontal plane. Specifically, a fixture matching the workpiece is arranged on the clamping seat 322, and the workpiece is placed in the fixture; the driving mechanism may include a first cylinder driving the clamping seat 322 to move along the X direction, a second cylinder driving the clamping seat 322 to move along the Y direction, and a rotating motor driving the clamping seat 322 to rotate along the horizontal plane, which is a prior art and will not be described in detail here; in addition, a light source assembly is also arranged in the positioning clamp 32 corresponding to each camera 232. In this embodiment, a driving mechanism for driving the clamping seat 322 to move is provided in the positioning seat 321. When the visual mechanism 2 collects the position information of the workpiece and sends it to the control system, the control system determines whether there is a deviation in the position of the workpiece based on the position information. If there is a deviation, the control system drives the clamping seat 322 to move by controlling the driving mechanism in the positioning seat 321, so as to adjust the workpiece to the correct position by automatically adjusting the position of the clamping seat 322, thereby ensuring the positioning accuracy of the workpiece.

[0036] Furthermore, if Figure 5 As shown, it also includes a cleaning mechanism 5, which is arranged at the rear side of the slide rail 31. The cleaning mechanism 5 specifically includes a rubber paper unwinding roll 51, a rubber paper receiving roll 52, a cleaning platform 53, a first rotating shaft 54, a second rotating shaft 55, and a driving motor 56. The cleaning rubber paper is discharged from the rubber paper unwinding roll 51, passes through the first rotating shaft 54, the cleaning platform 53, and the second rotating shaft 55 in sequence, and finally is reeled in the rubber paper receiving roll 52. The driving motor 56 drives the rubber paper receiving roll 52 to rotate, thereby driving the rubber paper to move. In this embodiment, the ink on the pad printing rubber head 41 in the pad printing mechanism is regularly cleaned by the cleaning mechanism 5 to ensure the pad printing quality.

[0037] Furthermore, the pad printing mechanism includes a pad printing rubber head 41 and an ink supply component 42, the ink supply component 42 is arranged between the slide rail 31 and the cleaning mechanism 5, the pad printing rubber head 41 is arranged above the slide rail 31 and the pad printing rubber head 41 can move in the Y direction and the Z direction. Specifically, a driving component, such as a motor ball screw, can be provided to drive the pad printing rubber head 41 to move forward and backward in the Y direction, and a cylinder or other components can be provided to drive the pad printing rubber head 41 to move up and down in the Z direction, so as to facilitate the pad printing rubber head 41 to perform cleaning, ink extraction, and printing operations.

[0038] Furthermore, if Figure 5As shown, a hot-air blowing mechanism 6 is also included, and the hot-air blowing mechanism 6 is arranged above the other end of the slide rail 31. Specifically, a mounting frame 61 is arranged at the other end of the slide rail 31, and a plurality of air outlet pipes 62 are installed on the mounting frame 61, and each air outlet pipe 62 is provided with a plurality of air outlets. By providing the hot-air blowing mechanism 6, the ink on the surface of the workpiece after pad printing is quickly dried, thereby improving production efficiency.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A fully automatic visual positioning pad printing machine, comprising a frame (1) and a control system, wherein the frame (1) is provided with a visual mechanism (2), a positioning and transfer mechanism (3) and a pad printing mechanism, and the visual mechanism (2), the positioning and transfer mechanism (3) and the pad printing mechanism are all connected to the control system; characterized in that: The positioning and transfer mechanism (3) includes a slide rail (31) and a positioning clamp table (32) slidably connected to the slide rail (31). The vision mechanism (2) includes a bracket (21) and a mounting plate (22) provided on the bracket (21). The mounting plate (22) extends above one end of the slide rail (31). At least four camera modules (23) are mounted on the mounting plate (22). The camera module (23) includes an adjustment component (231) and a camera (232) mounted on the adjustment component (231). The adjustment component (231) is used to adjust the position of the camera (232) in the X, Y, and Z directions.

2. The fully automatic visual positioning pad printing machine according to claim 1, characterized in that: There are six camera modules (23). The adjustment components (231) in each camera module (23) are arranged on the outside, and the cameras (232) are arranged on the inside. The six camera modules (23) are divided into two groups and are arranged symmetrically in a mirror image on the mounting plate (22). Each group of camera modules (23) is arranged in a "pin" shape.

3. The fully automatic visual positioning pad printing machine according to claim 1, characterized in that: The adjustment component (231) includes a fixed block (2311), a first moving block (2312), and a second moving block (2313) arranged in sequence from bottom to top. A third moving block (2314) is provided on one side of the second moving block (2313). The camera (232) is mounted on the third moving block (2314). The first moving block (2312) can move in the X or Y direction. The moving direction of the second moving block (2313) is perpendicular to the moving direction of the first moving block (2312). The third moving block (2314) can move in the Z direction.

4. The fully automatic visual positioning pad printing machine according to claim 3 is characterized by: A first guide block or a first guide groove is provided on the upper surface of the fixed block (2311). Correspondingly, a mating first guide groove or a first guide block is provided on the lower surface of the first moving block (2312). A second guide block or a second guide groove is provided on the upper surface of the first moving block (2312). Correspondingly, a mating second guide groove or a second guide block is provided on the lower surface of the second moving block (2313). A third guide block or a third guide groove is provided on the side surface where the second moving block (2313) is connected to the third moving block (2314). Correspondingly, a third guide groove or a third guide block is provided on the side surface where the third moving block (2314) is connected to the second moving block (2313).

5. The fully automatic visual positioning pad printing machine according to claim 4, characterized in that: The adjustment component (231) further includes a first adjustment screw (2315), a second adjustment screw (2316), and a third adjustment screw (2317). The first adjustment screw (2315), the second adjustment screw (2316), and the third adjustment screw (2317) are respectively used to drive the first moving block (2312), the second moving block (2313), and the third moving block (2314) to move.

6. The fully automatic visual positioning pad printing machine according to claim 1, characterized in that: A fourth adjustment screw is provided on the bracket (21). The fourth adjustment screw is used to drive the mounting plate (22) to move in the Z direction.

7. The fully automatic visual positioning pad printing machine according to claim 1, characterized in that: The positioning clamping platform (32) comprises a positioning seat (321) and a clamping seat (322) arranged above the positioning seat (321); the positioning seat (321) is slidably connected to the slide rail (31); a driving mechanism is arranged in the positioning seat (321); the driving mechanism is used to drive the clamping seat (322) to move along the X direction and the Y direction, and to rotate along a horizontal plane.

8. The fully automatic visual positioning pad printing machine according to claim 1, characterized in that: It also comprises a cleaning mechanism (5), wherein the cleaning mechanism (5) is arranged on the rear side of the slide rail (31).

9. The fully automatic visual positioning pad printing machine according to claim 8, characterized in that: The pad printing mechanism comprises a pad printing rubber head (41) and an ink supply assembly (42); the ink supply assembly (42) is arranged between the slide rail (31) and the cleaning mechanism (5); the pad printing rubber head (41) is arranged above the slide rail (31) and the pad printing rubber head (41) is movable along the Y direction and the Z direction.

10. The fully automatic visual positioning pad printing machine according to claim 1, characterized in that: It also comprises a heat-blowing device (6), and the heat-blowing device (6) is arranged above the other end of the slide rail (31).

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