A switch panel fully automatic surface printing device

Abstract

The invention relates to the technical field of switch panel processing equipment, and specifically discloses a switch panel full-automatic surface printing equipment, comprising a chassis, a printing mechanism and a control box, wherein a closed-loop conveying device is arranged on the chassis, linkage fixtures are connected to the closed-loop conveying device at equal intervals, a guide roller groove having the same moving track as the linkage fixture is opened on the upper surface of the chassis, a loading device and a unloading device are respectively arranged at the loading and unloading stations of the chassis, an electromagnet is arranged on the upper surface of the chassis at the loading and unloading stations, and a printing mechanism is arranged on the upper surface of the chassis and is arranged directly opposite to the printing station; the switch panel full-automatic surface printing equipment disclosed by the invention realizes the full automation of loading, printing and unloading in the process of printing the switch panel, reduces the workload of operators, improves the printing efficiency of the switch panel, and at the same time ensures the accurate positioning of the linkage fixture, thereby ensuring the smooth progress of the subsequent printing, loading and unloading processes.

Description

Technical Field

[0001] The invention relates to the technical field of switch panel processing equipment, and in particular discloses a fully automatic surface printing equipment for a switch panel. Background Art

[0002] The switch panel is a common circuit control device, and its main structure consists of an external plastic shell, an internal power board and various metal conductive parts. During the manufacturing process of the switch panel, the manufacturer often needs to print the corresponding logo or the manufacturer's trademark on the surface of the external plastic shell.

[0003] The existing switch panel printing equipment is mainly semi-automatic printing equipment. During the switch panel printing process, the operator places the plastic shell of the switch panel in a jig, and then uses the clamping cylinder in the jig to clamp and fix the plastic shell, and then starts the printing device through a button or foot switch to print a layer of UV paint on its surface. After the paint is dry, the plastic shell can be removed.

[0004] For example, the utility model patent with application number CN2020229087201 discloses a universal semi-automatic printing machine, including a frame, a sliding guide rail, a substrate fixture, a driving device, a printing device, a visual device and a control display. The driving device is arranged at the bottom of the substrate fixture to drive the substrate fixture to reciprocate along the sliding guide rail, the printing device is located above the printing area, the visual device and the control display are located above the loading and unloading area, and the signal input end of the control display is electrically connected to the visual device. The semi-automatic printing machine disclosed in the utility model is a commonly used device for switch panel printing at present. Although it has the advantages of simple structure, small size and low manufacturing cost, the printing efficiency of the switch panel is low, and manual loading and unloading is required, resulting in a high labor cost in the printing process of the switch panel. Therefore, in view of the above-mentioned shortcomings of the existing universal semi-automatic printing machine used in the process of switch panel printing, the present application proposes a fully automatic surface printing device for switch panels that can effectively solve the above-mentioned technical problems. Summary of the invention

[0005] The present invention is directed to a fully automatic surface printing device for a switch panel, so as to solve the problems of low operating efficiency and high labor intensity existing in existing semi-automatic printing machines when printing on the surface of a switch panel.

[0006] The present invention is achieved through the following technical solutions:

[0007] A switch panel fully automatic surface printing device comprises a chassis, a printing mechanism and a control box, wherein a closed-loop conveying device is arranged on the upper surface of the chassis, a plurality of linkage jigs are connected to the closed-loop conveying device at equal intervals, a guide roller groove having the same moving track as the linkage jig is opened on the upper surface of the chassis, a loading device and a unloading device are arranged at the loading and unloading stations of the chassis respectively, and an electromagnet is arranged on the upper surface of the chassis at the loading and unloading stations, and the printing mechanism is arranged on the upper surface of the chassis and is arranged directly opposite to the printing station;

[0008] The linkage fixture comprises a base, two movable splints and rollers, the rollers are connected to the lower surface of the base and extend into the guide roller groove, a moving rod perpendicular to the guide roller groove is inserted in the inner cavity of the base through a first spring, one end of the moving rod is connected to a trapezoidal block, and the other end extends out of the inner cavity of the base and is connected to a magnetic suction block acting on the electromagnet, extrusion pushing blocks abutting against the trapezoidal blocks are arranged in the inner cavity of the base on both sides of the moving rod, a limiting strip opening perpendicular to the moving rod is opened on the upper surface of the base above the extrusion pushing block, a connecting block is arranged in the limiting strip opening, and the upper and lower ends of the connecting block are respectively connected to the movable splint and the extrusion pushing block.

[0009] As a further arrangement of the above scheme, a roller mounting member is arranged in the guide roller groove located at the printing station, positioning abutment wheels are arranged at both ends of the roller mounting member, a guide slide rod is connected to the back side of the roller mounting member, a pressure sensor is connected to the end of the guide slide rod via a second spring, and the pressure sensor is electrically connected to the control box.

[0010] As a specific setting of the above scheme, the closed-loop conveying device includes a plurality of transmission wheels arranged on the upper surface of the chassis, and a servo motor is connected to the end of one of the transmission wheels, a closed-loop transmission member is arranged between the plurality of transmission wheels, and a connecting member connected to the closed-loop transmission member is arranged on the linkage fixture.

[0011] As a specific configuration of the above solution, the closed-loop transmission member is a belt or a chain, and the transmission wheel is a pulley or a sprocket.

[0012] As a specific setting of the above scheme, the loading device and the unloading device both include a belt transmission seat, a transmission belt is arranged in the belt transmission seat, and a material grabbing and releasing mechanism is arranged on the belt transmission seat.

[0013] As a specific setting of the above scheme, the material grabbing and releasing mechanism includes a track groove fixed on the side wall of the belt drive seat, a moving block is arranged in the track groove, and a first cylinder connected to the moving block is arranged at the side end of the track groove, a bracket is connected to the moving block, and a second cylinder is arranged at the top of the bracket, and the lower end of the second cylinder is connected to a suction cup located directly above the transmission belt.

[0014] As a specific setting of the above scheme, the printing mechanism includes a printing base fixed on the upper surface of the chassis, the printing base is connected to a swing arm through a stepper motor, the end of the swing arm is connected to a printing plate, and the printing plate is located directly above the cyclic moving trajectory of the linkage jig, and a third cylinder is installed on the swing arm, and the movable end of the third cylinder is connected to a scraper extending into the printing plate.

[0015] As a specific setting of the above solution, the shape of the trapezoidal block is an isosceles trapezoid, and the side end of the extrusion push block is provided with an inclined surface matching the trapezoidal block.

[0016] During the operation of the switch panel fully automatic surface printing equipment disclosed in the present invention, a closed-loop conveying device is used to pass all the linkage jigs on the equipment through the loading station one by one. Through the structural design of the linkage jig, when the linkage jig is at the loading station, the adsorption effect of the electromagnet is used to open the two movable clamps on the linkage jig, and then the switch panel is grabbed by the loading device and placed therein, and then the electromagnetic adsorption force is withdrawn so that the two movable clamps can clamp and fix the switch panel.

[0017] Subsequently, when the linkage jig holding the switch panel moves to the printing station, a specially designed position detection component (i.e., roller mounting, positioning abutment wheel, guide slide bar, second spring, and pressure sensor) is used to accurately detect the position of the linkage jig, and the two positioning abutment wheels are used to accurately position the linkage jig before surface printing is performed.

[0018] After printing, the switch panel moves to the unloading station, and the clamping effect on the switch panel is withdrawn again by the action of the electromagnet, and then the unloading device grabs the switch panel and puts it on the transmission belt for delivery. The entire automatic printing process not only realizes the automatic loading, printing and unloading of the switch panel, but also can accurately position the switch panel every time it is printed, greatly improving the printing effect. Beneficial Effects

[0019] The fully automatic surface printing equipment for switch panels disclosed in the present invention realizes the full automation of loading, printing and unloading in the process of printing switch panels, which not only effectively reduces the workload of operators, but also greatly improves the printing efficiency of switch panels.

[0020] The printing equipment disclosed in the present invention adopts a special design of a linkage fixture, so that the linkage fixture can clamp and fix the switch panel throughout the entire process of being conveyed by a closed-loop conveying device, and when it moves to the loading and unloading stations, it can use the action of the electromagnet to withdraw the clamping effect of the two movable clamps, thereby facilitating the loading and unloading process of the switch panel; the entire linkage fixture can realize the automatic clamping and releasing process of the switch panel without setting a corresponding driving part, and its structural design is novel, and the effect of being used in conjunction with the closed-loop conveying device is excellent.

[0021] The present invention is further designed for the precise positioning of the linkage jig during the switching process between the moving and stopping states, abandons the traditional method of positioning detection by sensors, and utilizes the squeezing effect of the roller member and the positioning abutment wheel on the linkage jig to determine the position. When the closed-loop transmission member stops operating, the linkage jig can be squeezed and fixed by the action of the spring and the two abutment wheels, avoiding displacement due to inertia when the linkage jig stops, effectively ensuring the precise positioning of the linkage jig, thereby ensuring the smooth progress of subsequent printing and loading and unloading processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the chassis, closed-loop conveying device, linkage fixture, etc. in the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the linkage fixture in the present invention;

[0026] Figure 4 It is a partial three-dimensional cross-sectional view of the linkage fixture in the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the trapezoidal block, the extrusion push block, the moving rod, etc. in the linkage fixture of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the loading device or the unloading device in the present invention;

[0029] Figure 7 It is a three-dimensional structural schematic diagram of the printing mechanism in the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the roller mounting member, the positioning abutment wheel, the pressure sensor, etc. in Example 2 of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 8 , and describes the application in detail with reference to embodiments. Example 1

[0033] Embodiment 1 discloses a switch panel fully automatic surface printing device, referring to the attached Figure 1 and attached Figure 2 The main body of the printing device includes a chassis 100, a loading device 200, a unloading device 300, a closed-loop conveying device 400, a printing mechanism 500, a plurality of linkage fixtures 600 and a control box 700. The lower surface of the chassis 100 is provided with a plurality of legs 101 to stably support the chassis 100, and the control cabinet 700 is fixedly installed on the front side of the chassis 100.

[0034] The closed-loop conveying device 400 includes a plurality of transmission wheels 401 arranged on the upper surface of the chassis 100, and a servo motor (not shown) connected to one of the transmission wheels 401 is arranged inside the chassis 100. A closed-loop transmission member 402 is then arranged between the plurality of transmission wheels 401. Specifically, the closed-loop transmission member 402 can be a belt or a chain. When a belt is selected, the transmission wheel 401 is a pulley, and when a chain is selected, the transmission wheel 401 is a sprocket. A guide roller groove 102 having the same trajectory as the closed-loop transmission member 402 is opened on the upper surface of the chassis 100 outside the closed-loop transmission member 402, and then a plurality of linkage jigs 600 are connected to the closed-loop transmission member 402 at equal intervals, and the linkage jigs 600 are made to perform a circular motion along the direction of the guide roller groove 102.

[0035] Reference Figure 3 , Attachment Figure 4 and attached Figure 5The linkage fixture 600 includes a base 601, and a connecting member 602 connected to the closed-loop transmission member 402 is arranged at the inner end of the base 601, and a roller member 603 matching the guide roller groove 102 is arranged on the lower surface of the base 601. A moving rod 604 is inserted into the inner cavity of the base 601, and the moving rod 604 is arranged perpendicular to the track of the guide roller groove 102. A trapezoidal block 605 is connected to the inner end of the moving rod 604, and the shape of the trapezoidal block 605 is an isosceles trapezoid, and a first spring 606 is arranged between the trapezoidal block 605 and the side wall of the inner cavity of the base 601. Then, a magnetic suction block 607 is connected to the outer end of the moving rod 604 extending out of the side wall of the base 601, and the magnetic suction block 607 can be selected from a magnet or an iron block. Two extrusion push blocks 608 are arranged in the inner cavity of the base 601 on both sides of the moving rod 604, and one end of the extrusion push block 608 is set to an inclined surface matching the trapezoidal block 605. On both sides of the upper surface of the base 601, there are respectively provided with limit strip openings 6011 corresponding to the two extrusion push blocks 608, and the limit strip openings 6011 are arranged perpendicular to the moving rod 604. A connection block 609 is arranged in each limit strip opening 6011, the lower end of the connection block 609 is fixedly connected to the extrusion push block 608, and the upper end thereof is connected to a movable clamping plate 610, and then a limit stopper 611 is fixedly connected to the inner side of the upper surface of the base 601 between the two movable clamping plates 610.

[0036] In this embodiment, the linkage fixture 600 can use magnetic adsorption force to make the moving rod 604 move perpendicular to the direction of the guide roller groove 102, and then through the action of the moving rod 604, the trapezoidal block 605 overcomes the force of the first spring 606 and squeezes the two extrusion push blocks 608 at the same time, so that the two extrusion push blocks 608 move away from each other. At this time, the distance between the two movable clamps 610 increases, and then the control panel to be printed can be placed in the two movable clamps 610, and the inner ends thereof are limited by the limiting baffle 611, and then the magnetic force is withdrawn, so that the two movable clamps 610 are close to each other under the action of the first spring 606, and then the control panel is fixedly clamped between the two movable clamps 610 and the limiting baffle 611.

[0037] Reference Figure 1 and attached Figure 2 The loading device 200 and the unloading device 300 have the same structure, and the two are fixedly arranged at different positions on the side of the chassis 100, and electromagnets 103 are arranged on the upper surface of the chassis 100 at the positions of the loading device 200 and the unloading device 300. When the linkage fixture 600 moves to the position of the loading device 200 or the unloading device 300, a current is passed through the electromagnet 103 to generate a magnetic field, and then the linkage fixture 600 can be opened through the action of the magnetic field force, and loading or unloading can be carried out at this time.

[0038] For details on the structures of the loading device 200 and the unloading device 300, please refer to the attached Figure 6 , both of which include a belt drive seat 201 and a support foot plate 202, the belt drive seat 201 is fixedly connected to the upper end of the support foot plate 202, and a transmission belt 203 is arranged inside the belt drive seat 201. At the same time, a track groove 204 is fixedly arranged on the side wall of the belt drive seat 201 close to the side of the chassis 100, a first cylinder 205 is arranged at the outer end of the track groove 204, a moving block 206 connected to the first cylinder 205 is arranged inside the track groove 204, and a bracket 207 is fixedly connected to the moving block 206, and then a second cylinder 208 is fixedly installed on the upper end of the bracket 207, and a suction cup 209 located just above the transmission belt 203 is connected to the lower end of the piston rod of the second cylinder 208. When the above-mentioned loading device 200 and unloading device 300 are in operation, the suction cup 209 is attached to the upper surface of the control panel to adsorb and fix it through the action of the second cylinder 208, and then the entire bracket 207 is pushed through the action of the first cylinder 205, thereby realizing the position switching of the control panel between the linkage fixture 600 and the transmission belt 203.

[0039] Finally, refer to the attached Figure 2 and attached Figure 7 The printing mechanism 500 is fixedly mounted on the upper surface of the chassis 100. The specific printing mechanism 500 is a prior art, which includes a printing seat 501, in which a swing arm 502 is rotatably mounted, and a stepping motor 503 for driving the swing arm 502 to adjust the angle is arranged at the side end of the printing seat 501. A printing plate 504 is connected to the front end of the swing arm 502, and the printing plate 504 is located directly above the circular movement track of the linkage fixture 600. A scraper 505 is arranged at the upper end of the printing plate 504, and a third cylinder 506 for driving the scraper 505 to move on the upper surface of the printing plate 504 is fixedly mounted on the swing arm 502.

[0040] During the operation of the fully automatic surface printing device for switch panels disclosed in this embodiment, when the linkage jig 600 moves to the station of the feeding device 200, the electromagnet 103 is started to generate an adsorption force on the magnetic suction block 607 in the linkage jig 600, thereby causing the moving rod 604 to move in the direction of the electromagnet 103. During the movement of the moving rod 604, the two movable clamps 610 move in opposite directions through the force of the trapezoidal block 605 on the two sides of the squeezing and pushing block 608. At this time, the feeding device 200 automatically grabs a switch panel and puts it between the two movable clamps 610, and cuts off the current passing into the electromagnet 103. At this time, the force of the electromagnet 103 on the linkage jig 600 disappears, and then the linkage jig 600 is reset under the action of the first spring 606, so that the two movable clamps 610 clamp and fix the switch panel.

[0041] Next, the closed-loop conveying device 400 conveys the linkage fixture 600 holding the switch panel to the work station of the printing mechanism 500, and then the printing mechanism 500 is started to print the logo or the manufacturer's upper surface on it. Finally, the printed switch panel is moved to the work station of the unloading device 300 along with the closed-loop conveying device 400, and then the electromagnet 103 at the work station of the unloading device 300 is started to open the two movable clamps 610 on the linkage fixture 600, and then the switch panel is automatically unloaded through the unloading device 300. Example 2

[0042] Example 2 discloses a switch panel fully automatic surface printing device that is improved and designed based on the technical solution in Example 1. This Example 2 is designed to improve the position accuracy control of the closed-loop conveying device 400 each time it conveys the linkage fixture 600.

[0043] The similarities between Example 2 and Example 1 are not described again. Figure 1 and attached Figure 8 In this embodiment 2, a pressure sensor 8 is fixedly mounted on the chassis 100 at the station of the printing mechanism 500, and a roller mounting member 801 is provided in the guide roller groove 102 directly below the station of the printing mechanism 500, and a positioning abutment wheel 802 is rotatably connected to each end of the roller mounting member 801. At the same time, a guide slide bar 803 is connected to the back of the roller mounting member 801, and a second spring 804 is provided between the outer end of the guide slide bar 803 and the pressure sensor 8. In addition, the pressure sensor 8 in this embodiment is also electrically connected to the control module inside the control box 700.

[0044] Through the above-mentioned design in this embodiment 2, when the closed-loop conveying device 400 drives the linkage fixture 600 to convey along the guide roller groove 102, when the linkage fixture 600 moves to the working station of the printing mechanism 500, the roller member 603 on the linkage fixture 600 will first press the positioning abutment wheel 802 on one side. At this time, the second spring 804 is compressed, and the pressure sensor 8 transmits the detected signal to the control box 700, and the control box 700 will issue a command to stop the servo motor from rotating. When the servo motor stops driving the closed-loop transmission member 402, the closed-loop transmission member 402 will have a certain inertia, causing the linkage fixture 600 to continue to move a short distance. At this time, the roller member 603 on the linkage fixture 600 will roll over the positioning abutment wheel 802 and enter between the two positioning abutment wheels 802. At this time, under the action of the second spring 804, it will be reset and pushed out as a whole. Therefore, the roller member 603 on the linkage fixture 600 can be stuck between the two roller members 603, thereby realizing the precise positioning of the linkage fixture 600, effectively ensuring the precise progress of subsequent printing, loading and unloading processes.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic surface printing device for a switch panel, comprising a chassis, a printing mechanism and a control box, characterized in that: A closed-loop conveying device is provided on the upper surface of the chassis, and a plurality of linkage jigs are connected to the closed-loop conveying device at equal intervals. A guide roller groove having the same moving track as the linkage jig is provided on the upper surface of the chassis. A loading device and a unloading device are provided at the loading and unloading stations of the chassis, respectively, and an electromagnet is provided on the upper surface of the chassis at the loading and unloading stations. The printing mechanism is provided on the upper surface of the chassis and is provided directly opposite to the printing station. The linkage fixture comprises a base, two movable splints and rollers, the rollers are connected to the lower surface of the base and extend into the guide roller groove, a moving rod arranged perpendicular to the guide roller groove is inserted in the inner cavity of the base through a first spring, one end of the moving rod is connected to a trapezoidal block, and the other end extends out of the inner cavity of the base and is connected to a magnetic suction block acting with an electromagnet, extrusion push blocks abutting against the trapezoidal blocks are arranged in the inner cavity of the base located on both sides of the moving rod, a limiting strip-shaped opening arranged perpendicular to the moving rod is opened on the upper surface of the base located above the extrusion push block, a connecting block is arranged in the limiting strip-shaped opening, and the upper and lower ends of the connecting block are respectively connected to the movable splint and the extrusion push block; A roller mounting piece is provided in the guide roller groove located at the printing station, positioning abutment wheels are provided at both ends of the roller mounting piece, a guide slide rod is connected to the back side of the roller mounting piece, a pressure sensor is connected to the end of the guide slide rod through a second spring, and the pressure sensor is electrically connected to the control box.

2. The switch panel fully automatic surface printing equipment according to claim 1, characterized in that: The closed-loop conveying device includes a plurality of transmission wheels arranged on the upper surface of the chassis, and a servo motor is connected to the end of one of the transmission wheels, a closed-loop transmission member is arranged between the plurality of transmission wheels, and a connecting member connected to the closed-loop transmission member is arranged on the linkage fixture.

3. The switch panel fully automatic surface printing equipment according to claim 2, characterized in that: The closed-loop transmission member is a belt or a chain, and the transmission wheel is a pulley or a sprocket.

4. The switch panel fully automatic surface printing device according to claim 1, characterized in that: The feeding device and the unloading device both comprise a belt transmission seat, a transmission belt is arranged in the belt transmission seat, and a material grabbing and releasing mechanism is arranged on the belt transmission seat.

5. The switch panel fully automatic surface printing device according to claim 4, characterized in that: The material grabbing and releasing mechanism includes a track groove fixed on the side wall of the belt drive seat, a moving block is arranged in the track groove, and a first cylinder connected to the moving block is arranged at the side end of the track groove, a bracket is connected to the moving block, and a second cylinder is arranged at the top of the bracket, and the lower end of the second cylinder is connected to a suction cup located directly above the transmission belt.

6. The switch panel fully automatic surface printing device according to claim 1, characterized in that: The printing mechanism includes a printing base fixed on the upper surface of the chassis, a swing arm is connected to the printing base through a stepper motor, the end of the swing arm is connected to a printing plate, and the printing plate is located directly above the moving track of the linkage fixture, a third cylinder is installed on the swing arm, and the movable end of the third cylinder is connected to a scraper extending into the printing plate.

7. The switch panel fully automatic surface printing device according to claim 1, characterized in that: The shape of the trapezoidal block is an isosceles trapezoid, and the side end of the extrusion push block is provided with an inclined surface matching the trapezoidal block.

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