Positioning mechanism of pad printing equipment

Abstract

The utility model discloses a positioning mechanism of pad printing equipment, which relates to the technical field of positioning mechanisms and comprises a main body, an air cylinder jacking mechanism is arranged in the main body, a movable end of the air cylinder jacking mechanism is fixedly connected with a movable table, and an air cylinder jacking component is used for controlling the movable table to do linear motion. A loading platform for placing stamp-pad ink is arranged on the inner side of the main body; a photoelectric sensor is fixedly installed on the top of the inner side of the body, and an adjustable operation table is arranged on one side of the body. According to the utility model, the photoelectric sensor is arranged, so that the irradiation position of the light source is a fixed position, the material loading platform can be positioned by taking the irradiation position as a reference, and the centering positioning part is arranged on the positioning seat; therefore, after the centering and positioning part is used for centering and positioning the transfer printing silica gel, the position right opposite to the transfer printing silica gel is the center position of the material carrying platform, and the positioning efficiency and the positioning accuracy of the transfer printing silica gel are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning mechanisms, in particular to a positioning mechanism for pad printing equipment. Background Art

[0002] Pad printing machine is a kind of equipment widely used for printing on the surface of various materials. Its biggest features are high printing precision, fast speed and wide application range. The equipment first puts ink into the steel plate engraved with text or patterns on the pad printing machine, then copies the text or pattern onto the rubber through the ink, and then uses the rubber to transfer the text or pattern to the surface of the plastic product. Finally, the ink is cured by heat treatment or ultraviolet light irradiation.

[0003] Among them, the rubber head is an important component in the pad printing machine that transfers ink from the printing plate to the substrate. Due to the characteristics of the rubber material, the rubber head will wear or deform after a period of use, resulting in poor printing effect. Therefore, it is necessary to check the status of the rubber head regularly and replace it as needed.

[0004] However, in the existing pad printing equipment, when replacing the pad printing silicone, manual positioning adjustment is usually required to achieve the target position for pad printing. Since the positioning involves multiple positions such as the installation position of the rubber pad printing silicone and the actual pad printing position of the rubber head after installation, in actual application, the operator's feeling is usually used for rough operation, and the positioning accuracy is low; if an external positioning device is used for auxiliary positioning, the positioning process will inevitably make the workload large, which is not conducive to finding and adjusting the target position for pad printing. Utility Model Content

[0005] The purpose of the utility model is to provide a positioning mechanism for a pad printing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A positioning mechanism of a pad printing device comprises a main body, wherein a cylinder lifting mechanism is arranged inside the main body, wherein the movable end of the cylinder lifting mechanism is fixedly connected to a movable platform, wherein the cylinder lifting component is used to control the movable platform to perform linear motion, and wherein a loading platform for placing printing ink is arranged inside the main body; wherein a photoelectric sensor is fixedly installed on the top of the inner side of the main body, wherein an adjustable operating table is arranged on one side of the main body, wherein the top of the operating table has a gap, wherein a sensing sheet is fixedly connected to the bottom of the inner wall of the gap, and wherein a visible light indicator for displaying the indicated position of the photoelectric sensor is arranged on the photoelectric sensor; wherein two cylinders are fixedly installed on the top of the movable platform, wherein piston rods of the cylinders extend to the bottom of the movable platform and are fixedly connected to a positioning seat, wherein pad printing silica gel is detachably connected to the positioning seat; wherein a cavity is arranged inside the positioning seat, wherein through holes penetrating to the bottom are provided at the central positions of the positioning seat and the top of the movable platform, and wherein the two through holes are located on the same vertical line, and wherein a centering positioning component is arranged inside the positioning seat, wherein the centering positioning component is used to center the pad printing silica gel.

[0008] By adopting the above technical solution, a photoelectric sensor is set so that the light source irradiation position is a fixed position, and the loading platform can be positioned based on this, and a centering positioning component is set on the positioning seat. Since the positioning seat can quickly align with the center position of the light source by controlling the cylinder lifting mechanism, after the pad printing silicone is centered and positioned using the centering positioning component, the position directly facing the pad printing silicone can be made the center position of the loading platform, which greatly improves the positioning efficiency and positioning accuracy of the pad printing silicone.

[0009] The further improvement of the technical solution of the utility model is that the centering positioning component includes a hollow shaft, which is rotatably connected between the top and the bottom of the inner wall of the positioning seat, both ends of the hollow shaft are connected to the outside through through holes, the top of the hollow shaft extends to the top of the positioning seat, the outer side of the hollow shaft is fixedly connected with a gear ring, two sliding rods are symmetrically fixedly connected between the two sides of the inner wall of the positioning seat, and the outer sides of the sliding rods are slidably connected with sliders, the two sliders are symmetrical about the center, and the sides of the sliders close to each other are fixedly connected with racks, the racks and the gear rings are meshed and connected, the bottom of the positioning seat is symmetrically provided with strip grooves, the side walls of the racks are connected with movable plates, the movable plates are provided with through grooves, and a clamping block that can slide in the vertical direction is arranged inside the through groove, and the clamping block is slidably connected to the strip groove; a slide rail is arranged at the bottom of the positioning seat, and a slide seat is fixedly connected to the top of the pad printing silicone, and the slide seat is slidably connected to the slide rail.

[0010] By adopting the above technical solution, one of the movable plates moves, thereby, on the one hand, driving the clamping block to move to the side away from the other, and through the centering structure composed of the rack and the gear ring, the other clamping block moves in the opposite direction with the same displacement.

[0011] A further improvement of the technical solution of the utility model is that: a reset groove is opened on one side of the clamping block and passes through to the other side, a fixing plate is fixedly connected between the inner walls of the through groove, the fixing plate is slidably connected to the inner wall of the reset groove, a limiting rod is fixedly connected between the top and bottom of the inner wall of the reset groove, the limiting rod is slidably connected to the fixing plate, a spring is sleeved on the outside of the limiting rod and located on the top of the fixing plate, and a pop-up groove is opened on the top of the positioning seat.

[0012] By adopting the above technical solution, the centering structure composed of the rack and the gear ring allows the other clamp to move in the opposite direction until it moves to the pop-up slot. At this time, the clamp is popped out under the elastic force of the spring, and its bottom no longer extends under the positioning seat. At this time, the slide seat can be slid in along the slide rail.

[0013] A further improvement of the technical solution of the utility model is that: a rounded corner is arranged at the bottom of the inner wall of the ejection groove, and a slope is arranged on one side of the top of the clamping block.

[0014] By adopting the above technical solution, the two clamping blocks are moved toward each other, and the clamping blocks are moved downward by the cooperation of the inclined surfaces and the rounded corners until the top of the clamping blocks touches the top of the inner wall of the positioning seat. This process will cause the clamping blocks to be pushed downward. At this time, the clamping blocks continue to move until they contact and squeeze the slide, thereby achieving the centering and fixing of the slide.

[0015] A further improvement of the technical solution of the utility model is that a support plate is fixedly connected to the bottom of the inner wall of the positioning seat, a screw is rotatably connected between the support plate and one side of the inner wall of the positioning seat, a movable block is threadedly connected to the outer side of the screw, the movable block is fixedly connected to one of the movable plates, and one end of the screw extends to the outside of the positioning seat and is fixedly connected to a knob.

[0016] By adopting the above technical solution, the screw rod is rotated by rotating the knob, and the movable block is driven to move, thereby causing one of the movable plates to move.

[0017] A further improvement of the technical solution of the utility model is that the adjacent sides of the clamping blocks are fixedly connected with rubber pads.

[0018] By adopting the above technical solution, the positioning of the slide seat by the clamping block is made softer, so as to reduce the wear of the contact part during the subsequent reciprocating operation.

[0019] A further improvement of the technical solution of the utility model is that an indicator light is installed on the main body, a controller and a processor are arranged inside the main body, and the indicator light, the photoelectric sensor and the processor are all electrically connected to the controller.

[0020] By adopting the above technical solution, the photoelectric sensor sends a signal to the sensing sheet, and after processing by the processor, the facing position of the photoelectric sensor at this time can be determined to perform precise positioning.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a positioning mechanism for a pad printing device. By setting a photoelectric sensor, the irradiation position of the light source is fixed, and the loading platform can be positioned based on this. A centering positioning component is set on the positioning seat. Since the positioning seat can quickly align with the center position of the light source by controlling the cylinder lifting mechanism, after the pad printing silicone is centered and positioned by using the centering positioning component, the position facing the pad printing silicone can be the center position of the loading platform, which greatly improves the positioning efficiency and positioning accuracy of the pad printing silicone.

[0023] 2. The utility model provides a positioning mechanism for pad printing equipment, which positions the slide seat by setting a screw rod in conjunction with a centering positioning component, so that the installation of pad printing silicone can be achieved only by turning a knob, which greatly improves the efficiency of positioning and installation operations and is beneficial to practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a structural schematic diagram of the utility model from the first perspective;

[0026] Figure 2 This is a schematic diagram of a partially disassembled structure of the utility model from a second viewing angle;

[0027] Figure 3 This is one of the cross-sectional structural schematic diagrams of the positioning seat of the utility model;

[0028] Figure 4 This is the second schematic cross-sectional structure diagram of the positioning seat of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the clamping block and the movable plate of the utility model;

[0030] Figure 6 For this utility model Figure 1 Enlarged view of point A in the middle;

[0031] In the figure: 1. main body; 2. photoelectric sensor; 3. movable table; 4. through hole; 5. positioning seat; 6. hollow shaft; 7. gear ring; 8. slider; 9. rack; 10. movable plate; 11. clamping block; 12. through groove; 13. reset groove; 14. fixed plate; 15. limit rod; 16. spring; 17. inclined surface; 18. rounded corner; 19. loading platform; 20. support plate; 21. screw; 22. movable block; 23. rubber pad; 24. pad printing silicone; 25. slide seat; 26. slide rail. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the embodiments:

[0033] Example 1

[0034] like Figure 1-Figure 6 As shown, the utility model provides a positioning mechanism of a pad printing device, including a main body 1, a cylinder lifting mechanism is arranged inside the main body 1, a movable end of the cylinder lifting mechanism is fixedly connected to a movable table 3, the cylinder lifting component is used to control the movable table 3 to make linear motion, a loading platform 19 for placing printing ink is arranged inside the main body 1; a photoelectric sensor 2 is fixedly installed on the top of the inner side of the main body 1, an adjustable operating table is arranged on one side of the main body 1, the top of the operating table has a gap, the bottom of the inner wall of the gap is fixedly connected to a sensing sheet, and a A visible light indicator for displaying the indicated position of the photoelectric sensor 2; two cylinders are fixedly installed on the top of the movable platform 3, and the piston rods of the cylinders extend to the bottom of the movable platform 3 and are fixedly connected to a positioning seat 5, on which a pad printing silicone rubber 24 is detachably connected; a cavity is provided inside the positioning seat 5, and a through hole 4 that passes through to the bottom is provided at the central position of the positioning seat 5 and the top of the movable platform, and the two through holes 4 are on the same vertical line, and a centering positioning component is provided inside the positioning seat 5, and the centering positioning component is used to center the pad printing silicone rubber 24.

[0035] In this embodiment, by setting the photoelectric sensor 2 so that the light source irradiation position is a fixed position, the loading platform 19 can be positioned based on this, and a centering positioning component is set on the positioning seat 5. Since the positioning seat 5 can be quickly aligned with the center position of the light source by controlling the cylinder lifting mechanism, after the pad printing silicone 24 is centered and positioned by using the centering positioning component, the position directly facing the pad printing silicone 24 can be made the center position of the loading platform 19, which greatly improves the positioning efficiency and positioning accuracy of the pad printing silicone 24, which is beneficial to practical applications.

[0036] like Figure 3 and Figure 4As shown, preferably, the centering positioning component includes a hollow shaft 6, which is rotatably connected between the top and the bottom of the inner wall of the positioning seat 5. Both ends of the hollow shaft 6 are connected to the outside through the through hole 4. The top of the hollow shaft 6 extends to the top of the positioning seat 5. A gear ring 7 is fixedly connected to the outside of the hollow shaft 6. Two sliding rods are symmetrically fixedly connected between the two sides of the inner wall of the positioning seat 5. Slide blocks 8 are slidably connected to the outside of the sliding rods. The two slide blocks 8 are centrally symmetrical. The sides of the slide blocks 8 that are close to each other are fixedly connected with racks 9. The racks 9 and the gear ring 7 are meshed and connected. The bottom of the positioning seat 5 is symmetrically provided with strip grooves, and the side walls of the racks 9 are connected with movable plates 10. The movable plates 10 are provided with through grooves 12, and a clamping block 11 that can slide in the vertical direction is arranged inside the through grooves 12, and the clamping block 11 is slidably connected to the strip groove; a slide rail 26 is arranged at the bottom of the positioning seat 5, and a slide seat 25 is fixedly connected to the top of the pad printing silicone 24, and the slide seat 25 is slidably connected to the slide rail 26.

[0037] In this embodiment, one of the movable plates 10 moves, thereby, on the one hand, driving the clamping block 11 to move away from the side, and through the centering structure composed of the rack 9 and the gear ring 7, the other clamping block 11 moves in the opposite direction with the same displacement.

[0038] like Figure 4 and Figure 5 As shown, preferably, a reset groove 13 is opened on one side of the clamping block 11 and passes through to the other side, a fixing plate 14 is fixedly connected between the inner walls of the through groove 12, the fixing plate 14 is slidably connected to the inner wall of the reset groove 13, a limiting rod 15 is fixedly connected between the top and bottom of the inner wall of the reset groove 13, the limiting rod 15 is slidably connected to the fixing plate 14, a spring 16 is sleeved on the outer side of the limiting rod 15 and located on the top of the fixing plate 14, and a pop-up groove is opened on the top of the positioning seat 5.

[0039] In this embodiment, the centering structure composed of the rack 9 and the ring gear 7 allows the other clamp 11 to move in the opposite direction until it moves to the pop-up slot. At this time, the clamp 11 is popped out under the elastic force of the spring 16, and its bottom no longer extends below the positioning seat 5. At this time, the slide seat 25 can be slid in along the slide rail 26.

[0040] like Figure 3 and Figure 4 As shown, preferably, a fillet 18 is provided at the bottom of the inner wall of the ejection slot, and a slope 17 is provided on one side of the top of the clamping block 11 .

[0041] In this embodiment, the two clamping blocks 11 are moved toward each other, and the inclined surface 17 and the fillet 18 cooperate with each other to move the clamping block 11 downward until the top of the clamping block 11 contacts the top of the inner wall of the positioning seat 5. This process causes the clamping block 11 to be pushed downward. At this time, the clamping block 11 continues to move until it contacts and squeezes the slide 25, thereby achieving the centering and fixing of the slide 25.

[0042] Example 2

[0043] like Figure 3 and Figure 4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a support plate 20 is fixedly connected to the bottom of the inner wall of the positioning seat 5, a screw 21 is rotatably connected between the support plate 20 and one side of the inner wall of the positioning seat 5, a movable block 22 is threadedly connected to the outer side of the screw 21, the movable block 22 is fixedly connected to one of the movable plates 10, and one end of the screw 21 extends to the outside of the positioning seat 5 and is fixedly connected to a knob.

[0044] In this embodiment, by rotating the knob, the screw rod 21 is rotated, and the movable block 22 is driven to move, thereby causing one of the movable plates 10 to move.

[0045] Example 3

[0046] like Figure 4 and Figure 5 As shown, based on Example 2, the utility model provides a technical solution: preferably, the adjacent sides of the clamping blocks 11 are fixedly connected with rubber pads 23.

[0047] In this embodiment, the positioning of the slide seat 25 by the clamping block 11 is made softer, so as to reduce the wear of the contact part during the subsequent reciprocating operation.

[0048] Preferably, an indicator light is installed on the main body 1, a controller and a processor are arranged inside the main body 1, and the indicator light, the photoelectric sensor 2 and the processor are all electrically connected to the controller.

[0049] In this embodiment, the photoelectric sensor 2 sends a signal to the sensing sheet, and after being processed by the processor, the facing position of the photoelectric sensor at this time can be determined to perform precise positioning.

[0050] The following is a detailed description of the working principle of the positioning mechanism of the pad printing equipment.

[0051] like Figure 1-Figure 6As shown, the light source irradiation position of the photoelectric sensor 2 is the target position initially set for the pad printing silicone 24. This position can be reached directly and quickly by controlling the positioning seat 5 through the controller, and no special calibration is required. Before installing the pad printing silicone 24, first control the photoelectric sensor 2 and the visible light indicator to work, and adjust the position of the loading platform 19 so that the indicator can be irradiated exactly at the center of the loading platform 19. This position can be roughly located by visually observing the visible light, and then the photoelectric sensor 2 sends a signal to the sensing sheet. After processing by the processor, the facing position of the photoelectric sensor at this time can be determined for precise positioning. When the pad printing silicone 24 is not installed on the positioning seat 5, the light source can pass through the through hole 4 and the hollow shaft 6 and irradiate on the sensing sheet. After the loading platform 19 is positioned, the screw 21 is rotated by turning the knob, and the movable block 22 is driven to move, thereby moving one of the movable plates 10, and then, on the one hand, driving the clamping block 11 to move to the side away from each other, and on the other hand, the centering structure composed of the rack 9 and the gear ring 7 makes the other clamping block 11 move in the opposite direction until it moves to the ejection groove. At this time, the clamping block 11 is ejected under the elastic force of the spring 16, and its bottom no longer extends below the positioning seat 5, so that the slide seat 25 can be slid along the slide rail 26 from the side (to a roughly central position), and then the knob is turned in the opposite direction to rotate the screw 21, thereby driving the two clamping blocks 1 1 moves toward the side close to it (this process is the same as the principle of the above process, the rack 9 is driven to work by the movable plate 10, and then the synchronous movement is carried out after the transmission of the centering structure). During the movement, the clamping block 11 will move downward under the cooperation of the inclined surface 17 and the fillet 18 until the top of the clamping block 11 hits the top of the inner wall of the positioning seat 5. This process will cause the clamping block 11 to be pushed downward. At this time, the clamping block 11 continues to move until it contacts and squeezes the slide 25, that is, the slide 25 is centered and fixed. At this time, the position directly below the pad printing silicone 24 is the center of the positioning seat 5, that is, the pad printing silicone 24 can reach the position directly facing the sensor sheet after pad printing, that is, the center of the loading platform 19.

[0052] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A positioning mechanism for a pad printing device, comprising a main body (1), wherein a cylinder lifting mechanism is arranged inside the main body (1), a movable end of the cylinder lifting mechanism is fixedly connected to a movable platform (3), the cylinder lifting component is used to control the movable platform (3) to make linear motion, and a loading platform (19) for placing printing ink is arranged inside the main body (1); characterized in that: A photoelectric sensor (2) is fixedly mounted on the top of the inner side of the main body (1); an adjustable operating table is provided on one side of the main body (1); a slit is provided on the top of the operating table; a sensing sheet is fixedly connected to the bottom of the inner wall of the slit; a visible light indicator for displaying the indicated position of the photoelectric sensor (2) is provided on the photoelectric sensor (2); two cylinders are fixedly mounted on the top of the movable platform (3); piston rods of the cylinders extend to the bottom of the movable platform (3) and are fixedly connected to a positioning seat (5); a pad printing silicone rubber (24) is detachably connected to the positioning seat (5); a cavity is provided inside the positioning seat (5); a through hole (4) penetrating to the bottom is provided at the central position of the top of the positioning seat (5) and the movable platform, and the two through holes (4) are on the same vertical line; a centering positioning component is provided inside the positioning seat (5); the centering positioning component is used to center the pad printing silicone rubber (24).

2. The positioning mechanism of a pad printing device according to claim 1, characterized in that: The centering positioning component comprises a hollow shaft (6), the hollow shaft (6) is rotatably connected between the top and the bottom of the inner wall of the positioning seat (5), both ends of the hollow shaft (6) are connected to the outside through the through hole (4), the top of the hollow shaft (6) extends to the top of the positioning seat (5), the outer side of the hollow shaft (6) is fixedly connected with a gear ring (7), two sliding rods are symmetrically fixedly connected between the two sides of the inner wall of the positioning seat (5), the outer sides of the sliding rods are slidably connected with sliders (8), the two sliders (8) are symmetrical about the center, and the sides of the sliders (8) that are close to each other are fixedly connected with gears. The rack (9) is meshed with the gear ring (7), the bottom of the positioning seat (5) is symmetrically provided with strip grooves, the side walls of the rack (9) are connected with movable plates (10), the movable plates (10) are provided with through grooves (12), and a clamping block (11) that can slide in a vertical direction is arranged inside the through groove (12), and the clamping block (11) is slidably connected with the strip groove; the bottom of the positioning seat (5) is provided with a slide rail (26), the top of the pad printing silica gel (24) is fixedly connected with a slide seat (25), and the slide seat (25) is slidably connected with the slide rail (26).

3. The positioning mechanism of a pad printing device according to claim 2, characterized in that: A reset groove (13) is provided on one side of the clamping block (11) and extends to the other side; a fixing plate (14) is fixedly connected between the inner walls of the through groove (12); the fixing plate (14) is slidably connected to the inner wall of the reset groove (13); a limiting rod (15) is fixedly connected between the top and bottom of the inner wall of the reset groove (13); the limiting rod (15) is slidably connected to the fixing plate (14); a spring (16) is sleeved on the outer side of the limiting rod (15) and located on the top of the fixing plate (14); and a pop-up groove is provided on the top of the positioning seat (5).

4. The positioning mechanism of a pad printing device according to claim 3, characterized in that: The bottom of the inner wall of the ejection slot is provided with a rounded corner (18), and one side of the top of the clamping block (11) is provided with a slope (17).

5. The positioning mechanism of a pad printing device according to claim 2, characterized in that: A support plate (20) is fixedly connected to the bottom of the inner wall of the positioning seat (5); a screw rod (21) is rotatably connected between the support plate (20) and one side of the inner wall of the positioning seat (5); a movable block (22) is threadedly connected to the outer side of the screw rod (21); the movable block (22) is fixedly connected to one of the movable plates (10); one end of the screw rod (21) extends to the outside of the positioning seat (5) and is fixedly connected to a knob.

6. The positioning mechanism of a pad printing device according to claim 3, characterized in that: The adjacent sides of the clamping blocks (11) are fixedly connected with rubber pads (23).

7. The positioning mechanism of a pad printing device according to claim 1, characterized in that: An indicator light is installed on the main body (1), a controller and a processor are arranged inside the main body (1), and the indicator light, the photoelectric sensor (2) and the processor are all electrically connected to the controller.

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