A hot stamping and silk-screen printing integrated machine with visual inspection function and its production process

Abstract

The invention discloses a hot stamping and silk-screen printing all-in-one machine with a visual inspection function and a production process thereof. The hot stamping and silk-screen printing all-in-one machine comprises: a machine base, a slide and an X-axis linear driving module for driving the slide to move along an X-axis direction are provided on the machine base, a fixture and a Y-axis linear driving module for driving the fixture to move along a Y-axis direction are provided on the slide; at least one hot stamping device is installed on the machine base; a visual inspection device comprises a stand, a Z-axis lifting module installed on the stand, a mounting frame installed at the lower end of the Z-axis lifting module, a CCD visual camera vertically installed on the mounting frame, and a first, a second, a third, and a fourth light source located around the CCD visual camera and having an adjustable tilt angle; a discharging manipulator is installed on the machine base, a suction cup module for sucking materials and an NG stamping module located beside the suction cup module and being telescopically movable are provided at the end of the discharging manipulator, and the lower end of the suction cup module protrudes downward relative to the lower end of the suction cup module.

Description

Technical Field

[0001] The invention relates to the field of machinery, and in particular to a hot stamping and silk-screen printing integrated machine with a visual detection function and a production process thereof. Background Art

[0002] The hot stamping machine is a new printing machine that uses the principle of heat transfer to heat and press the pre-printed foil onto various substrates through a hot stamping head. It has high production efficiency and significant economic benefits, and is an ideal equipment for the surface processing industry. It is widely used in the printing and decoration of products and packaging in industries such as cultural and educational supplies, cosmetics, toys, household daily necessities, home appliances, and signs. Products that have been transferred by heat transfer have bright colors, thick color layers, a three-dimensional feel, and strong adhesion. It can improve the grade of products and increase the added value of products.

[0003] After the product surface is screen printed and hot stamped, the quality of the screen printing and hot stamping on the product surface needs to be inspected to ensure the quality of the product before leaving the factory. At present, most manufacturers still use multi-station and multi-operator visual inspection to inspect products. This method is time-consuming and labor-intensive, requires a large number of operators, has high labor intensity, and has low work efficiency. The surface of screen printing and hot stamping products is curved, and the image on the curved surface is more difficult to inspect than the image on the flat surface. There are many unstable factors, and many external influences on the operator, such as the operator's eye fatigue, mood, sleep, sense of responsibility, etc., will cause serious safety hazards to the inspection efficiency and product quality of the product.

[0004] In view of this, the inventor proposes the following technical solution. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a hot stamping and silk-screen printing integrated machine with a visual inspection function and a production process thereof.

[0006] In order to solve the above technical problems, the present invention adopts the following first technical solution: the hot stamping and silk-screen printing integrated machine with visual inspection function comprises: a machine base, on which a slide and an X-axis linear drive module for driving the slide to move along the X-axis direction are arranged, and the slide is provided with a fixture for positioning the material and a Y-axis linear drive module for driving the fixture to move along the Y-axis direction; at least one hot stamping device, which is installed on the machine base and located above the fixture; a visual inspection device, which comprises a stand installed on the machine base and A Z-axis lifting module installed on the stand, a mounting frame installed on the lower end of the Z-axis lifting module, a CCD visual camera vertically installed on the mounting frame, and a first light source, a second light source, a third light source, and a fourth light source located around the CCD visual camera and capable of adjusting the inclination angle; a discharging robot installed on the machine base, a suction cup module for sucking materials and an NG stamp module located beside the suction cup module and capable of telescopic movement are provided at the end of the discharging robot, and the lower end of the suction cup module protrudes downward relative to the lower end of the suction cup module.

[0007] Furthermore, in the above technical solution, a protective cover is also provided on the mounting frame, which covers the periphery of the CCD visual camera and the first light source, the second light source, the third light source, and the fourth light source, and a light-shielding cotton layer is also provided on the inner wall of the protective cover.

[0008] Further, in the above technical solution, the mounting frame includes a Z-axis movable seat installed at the lower end of the Z-axis lifting module, a first profile fixed to the side of the Z-axis movable seat and a second profile installed at the lower end of the first profile, the first profile is provided with a first axis and a second axis at both ends, the first light source and the third light source are respectively installed on the first axis and the second axis in a rotatable manner, and the first light source and the third light source are also provided with a first locking member and a second locking member for locking the first light source and the third light source on the first axis and the second axis respectively; the second profile is provided with a third axis and a fourth axis at both ends, the second light source and the fourth light source are respectively installed on the third axis and the fourth axis in a rotatable manner, and the second light source and the fourth light source are also provided with a third locking member and a fourth locking member for locking the second light source and the fourth light source on the third axis and the fourth axis respectively.

[0009] Furthermore, in the above technical solution, the mounting frame includes a Z-axis movable seat installed at the lower end of the Z-axis lifting module, a first profile fixed to the side of the Z-axis movable seat, and a second profile installed at the lower end of the first profile, and the first rotating mechanism and the second rotating mechanism are respectively provided at both ends of the first profile, and the first light source and the third light source are respectively installed on the first rotating mechanism and the second rotating mechanism; the third rotating mechanism and the fourth rotating mechanism are respectively provided at both ends of the second profile, and the second light source and the fourth light source are respectively installed on the third rotating mechanism and the fourth rotating mechanism.

[0010] Furthermore, in the above technical solution, a Z-axis fine-tuning mechanism is provided on the Z-axis moving seat, the CCD vision camera is installed on the Z-axis fine-tuning mechanism, and the position in the Z-axis direction can be fine-tuned by the Z-axis fine-tuning mechanism; the Z-axis fine-tuning mechanism is a cylinder module or a servo motor module.

[0011] Furthermore, in the above technical solution, the NG stamp module includes a Z-axis cylinder and an NG stamp installed at the lower end of the Z-axis cylinder and driven by the Z-axis cylinder to move up and down, and the Z-axis cylinder is installed at the end of the discharging robot.

[0012] Furthermore, in the above technical scheme, the number of the hot stamping devices is two, which are distributed in parallel on the machine base; a silk screen device is also arranged between the hot stamping device and the visual inspection device; the silk screen device 5 includes a frame, a lifting frame installed on the frame and capable of sliding up and down, and a servo motor driving mechanism for driving the lifting frame to lift and lower, an X-axis movable seat installed on the lifting frame and an X-axis servo motor driving module for driving the X-axis movable seat to move in the X-axis direction, a Z-axis servo motor driving module installed at the lower end of the X-axis movable seat, a silk screen head installed at the lower end of the Z-axis servo motor driving module, a first connecting frame and a second connecting frame installed on both sides of the lifting frame, a first cylinder clamping device installed on one side of the first connecting frame, a second cylinder clamping device installed on one side of the second connecting frame, and a screen clamped between the first cylinder clamping device and the second cylinder clamping device, and the silk screen head is located above the screen.

[0013] Furthermore, in the above technical scheme, the hot stamping device includes a base frame installed on the machine base, a Z-axis servo motor screw drive mechanism installed on the base frame, a Z-axis lifting seat installed on the base frame and driven by the Z-axis servo motor screw drive mechanism to achieve lifting, a hot stamping film guide frame installed on the end of the Z-axis lifting seat, a hot stamping film unloading module and a hot stamping film winding module installed on both sides of the hot stamping film guide frame, a hot stamping head module installed on the lower end of the Z-axis lifting seat through a guide rod module, and a hot stamping lifting drive mechanism installed in the Z-axis lifting seat and used to drive the hot stamping head module to move downward, and a controller for controlling the lifting height of the hot stamping lifting drive mechanism; a pressure sensor is provided at the upper end of the hot stamping head module, and the pressure of the hot stamping head module pressing down is detected by the pressure sensor.

[0014] Furthermore, in the above technical solution, a micro switch is provided on the hot stamping head module, and a rotatable anti-pinch driving frame for triggering the micro switch is also provided on the hot stamping head module, and the front end of the anti-pinch driving frame extends out of the front end of the hot stamping head module.

[0015] In order to solve the above technical problems, the present invention adopts the following second technical solution: the production process of the hot stamping and silk-screen printing integrated machine with visual inspection function includes the following steps:

[0016] S001: Fix the material on the fixture and drive it to the bottom of the hot stamping device by the X-axis linear drive module and the Y-axis linear drive module;

[0017] S002: The hot stamping device works, and the hot stamping lifting drive mechanism in the hot stamping device drives the hot stamping head module to press down to stamp the text, logo, and English information on the hot stamping film onto the material to form the first hot stamping character on the material, and a pressure sensor is used to detect the pressing pressure of the hot stamping head module. When the pressure is too large or too small, the pressing pressure of the hot stamping lifting drive mechanism is controlled to make the pressure of the hot stamping head module pressing down on the material moderate; then enter S003;

[0018] S003: driven by the X-axis linear drive module and the Y-axis linear drive module to move to the bottom of the second hot stamping device, and the hot stamping lifting drive mechanism in the second hot stamping device drives the hot stamping head module to press down to stamp the text, logo, and English information on the hot stamping film on the material to form the second hot stamping characters on the material, and then enter S004;

[0019] S004: driven by the X-axis linear drive module and the Y-axis linear drive module to move to the bottom of the screen printing device, the screen printing device is started to perform screen printing on the material to form a screen printing layer on the material; then enter S005;

[0020] S005: Adjust the angles of the first light source and the third light source symmetrically distributed in the visual inspection device, and drive the first gold-stamped character on the material to be directly below the CCD visual camera by the X-axis linear drive module and the Y-axis linear drive module. The first light source and the third light source are lit at the same time, and the CCD visual camera uses the flying shooting technology to take a picture of the first gold-stamped character and judge whether it is qualified. If it is unqualified, enter S006 and turn off the first light source and the third light source; if it is qualified, adjust the angles of the second light source and the fourth light source symmetrically distributed in the visual inspection device, and drive the second gold-stamped character on the material to be directly below the CCD visual camera by the X-axis linear drive module and the Y-axis linear drive module. The second light source and the fourth light source are lit at the same time, and the CCD visual camera takes a picture of the first gold-stamped character. The second hot stamping character is photographed by the flying camera technology, and it is judged whether it is qualified. If it is unqualified, it enters S006 and turns off the second light source and the fourth light source; if it is qualified, the X-axis linear drive module and the Y-axis linear drive module are driven to move the silk-screen layer on the material to the position directly below the CCD vision camera, and the CCD vision camera adopts the flying camera technology to take a picture of the silk-screen layer, and judge whether it is qualified. If it is unqualified, it enters S006; if it is qualified, it enters S007; before the CCD vision camera adopts the flying camera technology to take a picture of the first hot stamping character or the second hot stamping character or the silk-screen layer on the material, if it is found that the first hot stamping character or the second hot stamping character or the silk-screen layer is printed on the curved surface of the material, the Z-axis fine-tuning mechanism drives the CCD vision camera downward to adjust the focus before taking a picture;

[0021] S006: The material is moved to the bottom of the discharging robot by the X-axis linear drive module. The discharging robot moves the suction cup module and the NG stamping module to the top of the material. The NG stamping module extends downward to stamp the NG stamp on the material. After completion, the NG stamping module is reset. The discharging robot then moves the suction cup module downward to fix the suction cup module on the material. Finally, the discharging robot delivers the material.

[0022] S007: The X-axis linear drive module drives the material to move to the bottom of the discharging robot. The discharging robot moves the suction cup module and the NG stamp module to the top of the material. The NG stamp module does not work. The suction cup module is adsorbed and fixed on the material. Finally, the discharging robot delivers the material.

[0023] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: the present invention is additionally provided with a visual inspection device, so that after the hot stamping device completes hot stamping on the material to form hot stamping characters, the visual inspection device can timely take pictures of the hot stamping characters through the CCD visual camera in cooperation with the first light source, the second light source, the third light source, and the fourth light source, and compare and verify the hot stamping characters through image processing. When the product is detected as qualified, the NG stamping module does not work, and the discharging robot cooperates with the suction cup module to adsorb the material and transfer it to the good product storage area; when the product is detected as unqualified, the NG stamping module works, and the discharging robot cooperates with the NG stamping module to stamp the NG stamp on the material, and then the discharging robot cooperates with the suction cup module to adsorb the material and transfer it to the good product storage area; thereby realizing automatic detection of hot stamping characters. The visual inspection device can detect the defective products and automatically transfer the qualified products and the unqualified products with NG stamp to the good product area and the defective product area respectively, so as to achieve the purpose of sorting. The labor intensity is extremely low and the work efficiency is extremely high. At the same time, the inspection quality can be guaranteed, and the uniform quality of the products leaving the factory can be guaranteed, which makes the present invention have strong market competitiveness. In addition, the visual inspection device also adopts the first light source, the second light source, the third light source, and the fourth light source to cooperate with lighting and fill light, and can adjust the angles of the first light source, the second light source, the third light source, and the fourth light source to ensure that the hot stamping characters will not reflect light, especially the hot stamping characters printed on the curved surface of the material are easy to reflect light, so as to ensure the quality of the photo, so that the hot stamping characters in the photo will not reflect light, avoid the phenomenon of hiding defects or poor quality due to reflection, ensure the quality of viewing angle detection, and further improve market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of the present invention;

[0025] Figure 2 is a stereogram of the visual detection device of the present invention;

[0026] Figure 3 is a stereoscopic diagram of the visual detection device of the present invention from another perspective;

[0027] Figure 4 It is a three-dimensional diagram of the hot stamping device in the present invention;

[0028] Figure 5 It is a front view of the hot stamping device in the present invention;

[0029] Figure 6 It is a partial structural diagram of the hot stamping device in the present invention;

[0030] Figure 7 is a three-dimensional diagram of the screen printing device of the present invention;

[0031] Figure 8 It is an assembly diagram of the slide and the fixture in the present invention. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with specific embodiments and drawings.

[0033] See Figure 1-8As shown, a hot stamping and silk-screen printing machine with a visual inspection function comprises: a machine base 1, on which a slide 11 and an X-axis linear drive module for driving the slide 11 to move along the X-axis direction are arranged, and the slide 11 is provided with a fixture 13 for positioning the material and a Y-axis linear drive module for driving the fixture 13 to move along the Y-axis direction; at least one hot stamping device 2, which is installed on the machine base 1 and is located above the fixture 13; a visual inspection device 3, which comprises a stand 31 installed on the machine base 1 and a Z-axis lifting module 3 installed on the stand 31 2 and a mounting frame 33 installed at the lower end of the Z-axis lifting module 32, a CCD visual camera 34 vertically installed on the mounting frame 33, and a first light source 35, a second light source 36, a third light source 37, and a fourth light source 38 located around the CCD visual camera 34 and capable of adjusting the tilt angle; a discharging robot 4, which is installed on the machine base 1, and a suction cup module 41 for sucking materials and an NG stamp module 42 located beside the suction cup module 41 and telescopically movable are provided at the end of the discharging robot 4, and the lower end of the suction cup module 41 protrudes downward relative to the lower end of the suction cup module 41. The present invention is additionally provided with a visual inspection device 3, so that after the hot stamping device 2 completes hot stamping of the material to form hot stamping characters, the visual inspection device 3 can timely take pictures of the hot stamping characters through the CCD visual camera 34 in cooperation with the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38, and compare and verify the hot stamping characters through image processing. When the product is detected as qualified, the NG stamping module 42 does not work, and the material discharging robot 4 cooperates with the suction cup module 41 to adsorb the material and transfer it to the good product storage area; when the product is detected as unqualified, the NG stamping module 42 works, and the material discharging robot 4 cooperates with the NG stamping module 42 to stamp the NG stamp on the material, and then the material discharging robot 4 cooperates with the suction cup module 41 to adsorb and transfer the material to the defective product storage area; thereby realizing automatic detection of hot stamping characters and automatically separating qualified products into defective products. The qualified products and the unqualified products with NG stamps are respectively transferred to the good product area and the defective product area, so as to achieve the purpose of sorting. The labor intensity is extremely low and the work efficiency is extremely high. At the same time, the inspection quality can be guaranteed, and the uniform quality of the products leaving the factory can be guaranteed, which makes the present invention have strong market competitiveness. In addition, the visual inspection device 3 also adopts the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38 to cooperate with lighting and fill light, and can adjust the angles of the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38 to ensure that the hot stamping characters will not reflect light, especially the hot stamping characters printed on the curved surface of the material are easy to reflect light, so as to ensure the quality of the photo, so that the hot stamping characters in the photo will not reflect light, avoid the phenomenon of hiding defects or poor quality due to reflection, ensure the quality of viewing angle detection, and further improve market competitiveness.

[0034] A shield 30 is also provided on the mounting frame 33, and the shield 30 covers the periphery of the CCD visual camera 34 and the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38, and a light-shielding cotton layer is also provided on the inner wall of the shield 30. This can not only protect the CCD visual camera 34 and the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38, but also prevent the CCD visual camera 34 and the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38 from being damaged by collision with foreign objects, and the inner wall of the shield 30 is also provided with a light-shielding cotton layer, which can block and absorb light, thereby further reducing the influence of external light, ensuring the efficiency of the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38 to fill in the light, and avoiding excessive reflection of the hot stamping characters.

[0035] The mounting frame 33 includes a Z-axis movable seat 331 installed at the lower end of the Z-axis lifting module 32, a first profile 332 fixed to the side of the Z-axis movable seat 331, and a second profile 333 installed at the lower end of the first profile 332. The first profile 332 is provided with a first shaft 334 and a second shaft 335 at both ends. The first light source 35 and the third light source 37 are respectively rotatably mounted on the first shaft 334 and the second shaft 335. The first light source 35 and the third light source 37 are also provided with a plurality of shafts for rotating the first light source 35 and the third light source 37. The light source 37 is locked to the first locking piece and the second locking piece on the first shaft 334 and the second shaft 335 respectively; the third shaft 336 and the fourth shaft 337 are respectively provided at both ends of the second profile 333, the second light source 36 and the fourth light source 38 are respectively installed on the third shaft 336 and the fourth shaft 337 in a rotatable manner, and the second light source 36 and the fourth light source 38 are also respectively provided with a third locking piece and a fourth locking piece for locking the second light source 36 and the fourth light source 38 on the third shaft 336 and the fourth shaft 337 respectively. The above is for manually adjusting the angles of the first light source 35, the second light source 36, the third light source 37 and the fourth light source 38. The present invention adopts the following structure to realize automatic adjustment of the angles of the first light source 35, the second light source 36, the third light source 37 and the fourth light source 38. Specifically, the mounting frame 33 includes a Z-axis movable seat 331 installed at the lower end of the Z-axis lifting module 32, a first profile 332 fixed to the side of the Z-axis movable seat 331 and a second profile 333 installed at the lower end of the first profile 332, and the first rotating mechanism and the second rotating mechanism are respectively provided at both ends of the first profile 332, and the first light source 35 and the third light source 37 are respectively installed on the first rotating mechanism and the second rotating mechanism; the third rotating mechanism and the fourth rotating mechanism are respectively provided at both ends of the second profile 333, and the second light source 36 and the fourth light source 38 are respectively installed on the third rotating mechanism and the fourth rotating mechanism.

[0036] The Z-axis moving seat 331 is provided with a Z-axis fine-tuning mechanism 39, and the CCD visual camera 34 is mounted on the Z-axis fine-tuning mechanism 39, and the position in the Z-axis direction can be fine-tuned by the Z-axis fine-tuning mechanism 39. The position of the CCD visual camera 34 in the Z-axis direction is controlled by the Z-axis fine-tuning mechanism 39, so as to achieve the purpose of time focusing, better realize the photography, and better guarantee the photography quality, even the hot stamping characters and / or silk-screen characters on the curved surface of the material can be clearly photographed to ensure the quality of the photo; the Z-axis fine-tuning mechanism 39 is a cylinder module or a servo motor module.

[0037] The NG stamp module 42 includes a Z-axis cylinder 421 and an NG stamp 422 installed at the lower end of the Z-axis cylinder 421 and driven by the Z-axis cylinder 421 to move up and down. The Z-axis cylinder 421 is installed at the end of the discharging robot 4. In a normal state, the Z-axis cylinder 421 is in a retracted state. At this time, the lower end of the suction cup module 41 protrudes downward relative to the lower end of the NG stamp 422. So that when the NG stamp is not needed, the NG stamp module 42 will not affect the normal operation of the suction cup module 41.

[0038] There are two hot stamping devices 2 , which are arranged in parallel on the machine base 1 ; a silk screen printing device 5 is also arranged between the hot stamping device 2 and the visual inspection device 3 .

[0039] The hot stamping device 2 includes a base frame 21 installed on the machine base 1, a Z-axis servo motor screw drive mechanism 22 installed on the base frame 21, a Z-axis lifting seat 23 installed on the base frame 21 and driven by the Z-axis servo motor screw drive mechanism 22 to achieve lifting, a hot stamping film guide frame 24 installed at the end of the Z-axis lifting seat 23, a hot stamping film discharge module 25 and a hot stamping film winding module 26 installed on both sides of the hot stamping film guide frame 24, a hot stamping head module 28 installed at the lower end of the Z-axis lifting seat 23 through a guide rod module 27, and a hot stamping lifting drive mechanism 29 installed in the Z-axis lifting seat 23 and used to drive the hot stamping head module 28 to move downward, and a controller for controlling the lifting height of the hot stamping lifting drive mechanism 29; a pressure sensor 20 is provided at the upper end of the hot stamping head module 28, and the pressure sensor 20 detects the downward pressure of the hot stamping head module 28. The hot stamping lifting drive mechanism 29 is a cylinder module or a servo motor module.

[0040] The hot stamping head module 28 is provided with a micro switch 281, and the hot stamping head module 28 is also provided with an anti-pinch driving frame 282 which can rotate and is used to trigger the micro switch 281, and the front end of the anti-pinch driving frame 282 extends out of the front end of the hot stamping head module 28. When the anti-pinch driving frame 282 hits the hand, the anti-pinch driving frame 282 moves upward, the micro switch 281 is triggered, and the Z-axis servo motor screw driving mechanism 22 drives the Z-axis lifting seat 23 and the hot stamping head module 28 to move upward, thereby achieving the anti-pinch effect.

[0041] The screen printing device 5 includes a frame 51, a lifting frame 52 installed on the frame 51 and capable of sliding up and down, and a servo motor driving mechanism for driving the lifting frame 52 to move up and down, an X-axis moving seat 54 installed on the lifting frame 52 and an X-axis servo motor driving module for driving the X-axis moving seat 54 to move in the X-axis direction, a Z-axis servo motor driving module 55 installed at the lower end of the X-axis moving seat 54, a screen printing head 56 installed at the lower end of the Z-axis servo motor driving module 55, a first connecting frame 57 and a second connecting frame 58 installed on both sides of the lifting frame 52, a first cylinder clamping device 571 installed on one side of the first connecting frame 57, a second cylinder clamping device 581 installed on one side of the second connecting frame 58, and a screen plate 59 clamped between the first cylinder clamping device 571 and the second cylinder clamping device 581, and the screen printing head 56 is located above the screen plate 59.

[0042] In summary, the present invention is additionally provided with a visual inspection device 3, so that after the hot stamping device 2 completes hot stamping on the material to form hot stamping characters, the visual inspection device 3 can promptly take pictures of the hot stamping characters through the CCD visual camera 34 in cooperation with the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38, and compare and verify the results through image processing. When the product is detected as qualified, the NG stamp module 42 does not work, and the discharging robot 4 cooperates with the suction cup module 41 to adsorb the material and transfer it to the good product storage area; when the product is detected as unqualified, the NG stamp module 42 works, and the discharging robot 4 cooperates with the NG stamp module 42 to stamp the NG stamp on the material, and then the discharging robot 4 cooperates with the suction cup module 41 to adsorb the material and transfer it to the good product storage area; in this way, automatic detection of hot stamping characters is realized, and qualified products are automatically stored. The unqualified products with NG stamps and the unqualified products with NG stamps are respectively transferred to the good product area and the defective product area, so as to achieve the purpose of sorting. The labor intensity is extremely low and the work efficiency is extremely high. At the same time, the inspection quality can be guaranteed, and the uniform quality of the products leaving the factory can be guaranteed, which makes the present invention have strong market competitiveness. In addition, the visual inspection device 3 also adopts the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38 to cooperate with lighting and fill light, and can adjust the angles of the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38 to ensure that the hot stamping characters will not reflect light, especially the hot stamping characters printed on the curved surface of the material are easy to reflect light, so as to ensure the quality of the photo, so that the hot stamping characters in the photo will not reflect light, avoid the phenomenon of hiding defects or poor quality due to reflection, ensure the quality of viewing angle detection, and further improve market competitiveness.

[0043] The present invention also discloses a production process of a hot stamping and silk-screen printing integrated machine with a visual detection function, which comprises the following steps:

[0044] S001: Fix the material on the fixture 13 and drive it to move below the hot stamping device 2 by the X-axis linear drive module and the Y-axis linear drive module;

[0045] S002: The hot stamping device 2 works, and the hot stamping lifting drive mechanism 29 in the hot stamping device 2 drives the hot stamping head module 28 to press down to stamp the text, logo, and English information on the hot stamping film on the material to form the first hot stamping character on the material, and the pressure sensor 20 is used to detect the pressing pressure of the hot stamping head module. When the pressure is too large or too small, the pressing pressure of the hot stamping lifting drive mechanism 29 is controlled to make the pressure of the hot stamping head module pressing down on the material moderate; then enter S003;

[0046] S003: The X-axis linear drive module and the Y-axis linear drive module are driven to move to the bottom of the second hot stamping device, and the hot stamping lifting drive mechanism 29 in the second hot stamping device drives the hot stamping head module to press down to stamp the text, logo, and English information on the hot stamping film on the material to form a second hot stamping character on the material, and then enter S004;

[0047] S004: driven by the X-axis linear drive module and the Y-axis linear drive module to move to the bottom of the screen printing device 5, the screen printing device 5 is started to perform screen printing on the material to form a screen printing layer on the material; then enter S005;

[0048] S005: Adjust the angles of the symmetrically distributed first light source 35 and the third light source 37 in the visual inspection device 3, and drive the first gold-stamped character on the material to be directly below the CCD visual camera 34 by the X-axis linear drive module and the Y-axis linear drive module, and light up the first light source 35 and the third light source 37 at the same time, and the CCD visual camera uses the flying shooting technology to take a picture of the first gold-stamped character, and judge whether it is qualified. If it is unqualified, enter S006 and turn off the first light source 35 and the third light source 37; if it is qualified, adjust the angles of the symmetrically distributed second light source 36 and the fourth light source 38 in the visual inspection device 3, and drive the second gold-stamped character on the material to be directly below the CCD visual camera 34 by the X-axis linear drive module and the Y-axis linear drive module, and light up the second light source 36 and the fourth light source 38 at the same time, And the CCD vision camera adopts the flying shooting technology to take a picture of the second hot stamping character, and judges whether it is qualified. If it is unqualified, it enters S006 and turns off the second light source 36 and the fourth light source 38; if it is qualified, it is driven by the X-axis linear drive module and the Y-axis linear drive module to move the silk-screen layer on the material to the position directly below the CCD vision camera 34, and the CCD vision camera adopts the flying shooting technology to take a picture of the silk-screen layer, and judges whether it is qualified. If it is unqualified, it enters S006; if it is qualified, it enters S007; before the CCD vision camera adopts the flying shooting technology to take a picture of the first hot stamping character or the second hot stamping character or the silk-screen layer on the material, if it is found that the first hot stamping character or the second hot stamping character or the silk-screen layer is printed on the curved surface of the material, the Z-axis fine-tuning mechanism drives the CCD vision camera downward to focus and then take a picture;

[0049] S006: The material is moved to the bottom of the discharging robot 4 by the X-axis linear drive module, and the discharging robot 4 moves the suction cup module 41 and the NG stamping module 42 to the top of the material, and the NG stamping module 42 extends downward to stamp the NG stamp on the material. After completion, the NG stamping module 42 is reset, and the discharging robot 4 moves the suction cup module 41 downward again, so that the suction cup module 41 is adsorbed and fixed on the material, and finally the discharging robot 4 delivers the material;

[0050] S007: The X-axis linear drive module drives the material to move to the bottom of the discharging robot 4, and the discharging robot 4 moves the suction cup module 41 and the NG stamp module 42 to the top of the material. The NG stamp module 42 does not work, and the suction cup module 41 is adsorbed and fixed on the material. Finally, the discharging robot 4 delivers the material.

[0051] The production process of the hot stamping and silk-screen printing integrated machine with visual inspection function of the present invention is that after the material is hot stamped and silk-screened, the visual inspection device 3 can timely take pictures of the hot stamping characters or silk-screen printing through the CCD visual camera 34 in cooperation with the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38, and compare and verify the image processing. When it is detected as a qualified product, the NG stamping module 42 does not work, and the material is adsorbed and transferred to the good product storage area by the discharging robot 4 in cooperation with the suction cup module 41; when it is detected as an unqualified product, the NG stamping module 42 works, and the material is stamped with an NG stamp by the discharging robot 4 in cooperation with the NG stamping module 42, and then the material is adsorbed and transferred to the good product storage area by the discharging robot 4 in cooperation with the suction cup module 41; thereby realizing automatic detection of hot stamping characters or silk-screen printing, and automatically separating qualified products and stamped N The unqualified products of Chapter G are transferred to the good product area and the defective product area respectively, so as to achieve the purpose of sorting. The labor intensity is extremely low and the work efficiency is extremely high. At the same time, the inspection quality can be guaranteed, and the uniformity of the product quality at the factory can be guaranteed, so that the present invention has a strong market competitiveness. In addition, the visual inspection device 3 also adopts the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38 to cooperate with lighting and fill light, and can adjust the angles of the first light source 35, the second light source 36, the third light source 37, and the fourth light source 38 to ensure that the hot stamping characters or silk screens will not reflect light, especially the hot stamping characters or silk screens printed on the curved surface of the material are easy to reflect light, so as to ensure the quality of the photo, so that the hot stamping characters or silk screens in the photo will not reflect light, avoid the phenomenon of reflection and hiding defects or defects, ensure the quality of the visual angle detection, and further improve the market competitiveness. In addition, the CCD visual camera adopts the flying shooting technology to take pictures of the hot stamping characters or silk screens, so as to prevent the phenomenon of ghosting or blurring of the photos due to shaking, and ensure the quality of the photos.

[0052] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A hot stamping and silk-screen printing machine with visual inspection function, characterized in that: It includes: A machine base (1), on which a slide table (11) and an X-axis linear drive module for driving the slide table (11) to move along an X-axis direction are arranged, and on which a fixture (13) for positioning a material and a Y-axis linear drive module for driving the fixture (13) to move along a Y-axis direction are arranged; At least one hot stamping device (2), which is mounted on the machine base (1) and located above the fixture (13); A visual inspection device (3), comprising a stand (31) mounted on the machine base (1), a Z-axis lifting module (32) mounted on the stand (31), a mounting frame (33) mounted on the lower end of the Z-axis lifting module (32), a CCD visual camera (34) vertically mounted on the mounting frame (33), and a first light source (35), a second light source (36), a third light source (37), and a fourth light source (38) located around the CCD visual camera (34) and having adjustable tilt angles; the first light source (35) and the third light source (37) are symmetrically arranged, and the second light source (36) and the fourth light source (38) are symmetrically arranged; A discharging robot (4) is mounted on the machine base (1), and the end of the discharging robot (4) is provided with a suction cup module (41) for sucking materials and an NG stamp module (42) located beside the suction cup module (41) and capable of telescopic movement, and the lower end of the suction cup module (41) protrudes downward relative to the lower end of the suction cup module (41); The NG stamp module (42) comprises a Z-axis cylinder (421) and an NG stamp (422) mounted on the lower end of the Z-axis cylinder (421) and driven by the Z-axis cylinder (421) to move up and down, and the Z-axis cylinder (421) is mounted on the end of the discharging robot (4); The number of the hot stamping devices (2) is two, which are arranged in parallel on the machine base (1); a screen printing device (5) is also arranged between the hot stamping device (2) and the visual inspection device (3); the screen printing device (5) comprises a frame (51), a lifting frame (52) mounted on the frame (51) and capable of sliding up and down, and a servo motor driving mechanism for driving the lifting frame (52) to move up and down, an X-axis moving seat (54) mounted on the lifting frame (52) and an X-axis servo motor driving module for driving the X-axis moving seat (54) to move in the X-axis direction, and a servo motor driving module mounted on the X-axis moving seat (54). 4) a Z-axis servo motor drive module (55) at the lower end, a screen printing head (56) installed at the lower end of the Z-axis servo motor drive module (55), a first connecting frame (57) and a second connecting frame (58) installed on both sides of the lifting frame (52), a first cylinder clamping device (571) installed on one side of the first connecting frame (57), a second cylinder clamping device (581) installed on one side of the second connecting frame (58), and a screen plate (59) clamped between the first cylinder clamping device (571) and the second cylinder clamping device (581), wherein the screen printing head (56) is located above the screen plate (59); The hot stamping device (2) comprises a base frame (21) mounted on the machine base (1), a Z-axis servo motor screw drive mechanism (22) mounted on the base frame (21), a Z-axis lifting seat (23) mounted on the base frame (21) and driven by the Z-axis servo motor screw drive mechanism (22) to achieve lifting, a hot stamping film guide frame (24) mounted on the end of the Z-axis lifting seat (23), a hot stamping film unloading module (25) and a hot stamping film winding module (25) mounted on both sides of the hot stamping film guide frame (24). A group (26), a hot stamping head module (28) installed at the lower end of the Z-axis lifting seat (23) through a guide rod module (27), a hot stamping lifting drive mechanism (29) installed in the Z-axis lifting seat (23) and used for driving the hot stamping head module (28) to move downward, and a controller for controlling the lifting height of the hot stamping lifting drive mechanism (29); a pressure sensor (20) is provided at the upper end of the hot stamping head module (28), and the pressure of the hot stamping head module (28) is detected by the pressure sensor (20).

2. The hot stamping and silk-screen printing integrated machine with visual inspection function according to claim 1, characterized in that: A protective cover (30) is also provided on the mounting frame (33), and the protective cover (30) covers the periphery of the CCD visual camera (34) and the first light source (35), the second light source (36), the third light source (37), and the fourth light source (38), and a light-shielding cotton layer is also provided on the inner wall of the protective cover (30).

3. The hot stamping and silk-screen printing integrated machine with visual inspection function according to claim 1, characterized in that: The mounting frame (33) comprises a Z-axis movable seat (331) mounted on the lower end of the Z-axis lifting module (32), a first profile (332) fixed to the side of the Z-axis movable seat (331), and a second profile (333) mounted on the lower end of the first profile (332), the first profile (332) being provided with a first shaft (334) and a second shaft (335) at both ends, the first light source (35) and the third light source (37) being respectively mounted on the first shaft (334) and the second shaft (335) in a rotatable manner, and the first light source (35) and the third light source (37) being respectively provided with a shaft for rotating the first light source (35) and the third light source (37). The three light sources (37) are respectively locked to the first locking member and the second locking member on the first shaft (334) and the second shaft (335); the second profile (333) is respectively provided with a third shaft (336) and a fourth shaft (337); the second light source (36) and the fourth light source (38) are respectively mounted on the third shaft (336) and the fourth shaft (337) in a rotatable manner; and the second light source (36) and the fourth light source (38) are also respectively provided with a third locking member and a fourth locking member for locking the second light source (36) and the fourth light source (38) on the third shaft (336) and the fourth shaft (337).

4. The hot stamping and silk-screen printing integrated machine with visual inspection function according to claim 1, characterized in that: The mounting frame (33) comprises a Z-axis movable seat (331) mounted on the lower end of the Z-axis lifting module (32), a first profile (332) fixed to the side of the Z-axis movable seat (331), and a second profile (333) mounted on the lower end of the first profile (332), the first profile (332) being provided with a first rotating mechanism and a second rotating mechanism at both ends, the first light source (35) and the third light source (37) being respectively mounted on the first rotating mechanism and the second rotating mechanism; the second profile (333) being provided with a third rotating mechanism and a fourth rotating mechanism at both ends, the second light source (36) and the fourth light source (38) being respectively mounted on the third rotating mechanism and the fourth rotating mechanism.

5. The hot stamping and silk-screen printing integrated machine with visual inspection function according to claim 3, characterized in that: The Z-axis moving seat (331) is provided with a Z-axis fine-tuning mechanism (39), the CCD visual camera (34) is mounted on the Z-axis fine-tuning mechanism (39), and the position in the Z-axis direction can be fine-tuned by the Z-axis fine-tuning mechanism (39); the Z-axis fine-tuning mechanism (39) is a cylinder module or a servo motor module.

6. The hot stamping and silk-screen printing integrated machine with visual inspection function according to claim 1, characterized in that: The hot stamping head module (28) is provided with a micro switch (281), and the hot stamping head module (28) is also provided with an anti-pinch driving frame (282) which is rotatable and used to trigger the micro switch (281), and the front end of the anti-pinch driving frame (282) extends out of the front end of the hot stamping head module (28).

7. A production process of a hot stamping and silk-screen printing integrated machine with a visual inspection function as claimed in any one of claims 1 to 6, comprising the following steps: S001: Fix the material on the fixture (13), and drive the material to move to the bottom of the hot stamping device (2) by the X-axis linear drive module and the Y-axis linear drive module; S002: the hot stamping device (2) works, and the hot stamping lifting drive mechanism (29) in the hot stamping device (2) drives the hot stamping head module (28) to press down to stamp the text, logo, and English information on the hot stamping film onto the material to form a first hot stamping character on the material, and a pressure sensor (20) is used to detect the downward pressure of the hot stamping head module. When the pressure is too large or too small, the downward pressure of the hot stamping lifting drive mechanism (29) is controlled to make the pressure of the hot stamping head module pressing down on the material moderate; then enter S003; S003: the X-axis linear drive module and the Y-axis linear drive module are driven to move to the bottom of the second hot stamping device, and the hot stamping lifting drive mechanism (29) in the second hot stamping device drives the hot stamping head module to press down to stamp the text, logo, and English information on the hot stamping film onto the material to form a second hot stamping character on the material, and then enter S004; S004: driven by the X-axis linear drive module and the Y-axis linear drive module to move to the bottom of the screen printing device (5), the screen printing device (5) is started to perform screen printing on the material to form a screen printing layer on the material; then enter S005; S005: adjusting the angles of the first light source (35) and the third light source (37) symmetrically distributed in the visual inspection device (3), and driving the first gold-stamped character on the material to be located directly below the CCD visual camera (34) by the X-axis linear drive module and the Y-axis linear drive module, the first light source (35) and the third light source (37) are lit at the same time, and the CCD visual camera uses the flying shooting technology to take a picture of the first gold-stamped character, and judges whether it is qualified. If it is unqualified, enter S006 and turn off the first light source (35) and the third light source (37); if it is qualified, adjust the angles of the second light source (36) and the fourth light source (38) symmetrically distributed in the visual inspection device (3), and drive the second gold-stamped character on the material to be located directly below the CCD visual camera (34) by the X-axis linear drive module and the Y-axis linear drive module, and the second light source (36) and the fourth light source (38) are turned on. The light sources (38) are simultaneously lit, and the CCD vision camera uses the flying shooting technology to take a picture of the second hot stamping character and judges whether it is qualified. If it is unqualified, the process proceeds to S006, and the second light source (36) and the fourth light source (38) are turned off; if it is qualified, the X-axis linear drive module and the Y-axis linear drive module are driven to move the silk-screen layer on the material to a position directly below the CCD vision camera (34), and the CCD vision camera uses the flying shooting technology to take a picture of the silk-screen layer and judge whether it is qualified. If it is unqualified, the process proceeds to S006; if it is qualified, the process proceeds to S007; before the CCD vision camera uses the flying shooting technology to take a picture of the first hot stamping character or the second hot stamping character or the silk-screen layer on the material, if it is found that the first hot stamping character or the second hot stamping character or the silk-screen layer is printed on the curved surface of the material, the Z-axis fine-tuning mechanism drives the CCD vision camera downward to adjust the focus before taking a picture; S006: The material is moved to the bottom of the discharging robot (4) by the X-axis linear drive module, and the discharging robot (4) moves the suction cup module (41) and the NG stamping module (42) to the top of the material. The NG stamping module (42) extends downward to stamp the NG stamp on the material. After completion, the NG stamping module (42) is reset, and the discharging robot (4) moves the suction cup module (41) downward again, so that the suction cup module (41) is adsorbed and fixed on the material, and finally the discharging robot (4) delivers the material; S007: The X-axis linear drive module drives the material to move to the bottom of the material discharging robot (4), and the material discharging robot (4) moves the suction cup module (41) and the NG stamp module (42) to the top of the material. The NG stamp module (42) does not work, and the suction cup module (41) is fixed on the material by suction. Finally, the material is sent out by the material discharging robot (4).

Images