CN219294984U - Automatic pad printing equipment for irregular accessories - Google Patents

Abstract

The utility model relates to automatic pad printing equipment for irregular accessories, which comprises a vibration screening device, a feeding device arranged at one side of the vibration screening device along a first direction and a pad printing device arranged at one side of the vibration screening device along a second direction, wherein the feeding device is arranged at one side of the vibration screening device along the second direction; the vibration screening device comprises a vibration material box and a vibration generator, wherein the top of the vibration material box is of an opening structure, and the vibration generator is arranged at the bottom of the vibration material box and is used for dispersing irregularly-shaped to-be-pad printing accessories in the vibration material box through vibration; a calibration fixture is arranged on one side of the vibration screening device, which is close to the pad printing device, and is provided with an accommodating cavity with an upward opening, and the shape of the inner side wall of the accommodating cavity is matched with the shape of a fitting to be pad printed; the feeding device is used for extending into the vibration material box to absorb the fitting to be pad printed, placing the fitting to be pad printed into the calibration position in the calibration fixture, and then transferring the fitting to be pad printed with the position calibration completed into the pad printing device for pad printing. The utility model has simple structure, high efficiency, flexibility and strong applicability.

Description

Automatic pad printing equipment for irregular accessories

Technical Field

The utility model relates to the technical field of pad printing equipment, in particular to automatic pad printing equipment for irregular accessories.

Background

Pad printing belongs to one of special printing modes. The printing device can print characters, figures and images on the surface of an irregular special-shaped object, and is now becoming an important special printing. The model car comprises a plurality of accessories, wherein characters, graphics and images are required to be printed on part of the accessories in a pad printing mode, so that the overall simulation effect of the model car is improved. When the pad printing equipment is used for pad printing the accessories, the accessories to be pad printed are required to be orderly arranged so as to pad print the determined positions of the accessories. However, because most accessories in the model car are irregularly flat, the accessories are required to be arranged by manual arrangement before pad printing, the time consumption is long, the production efficiency is low, and the productivity cannot be improved on a large scale.

Disclosure of Invention

Based on this, the utility model aims to provide an automatic pad printing device which is suitable for pad printing treatment of irregular accessories, flexible, efficient and high in automation degree.

The utility model is realized by the following technical scheme:

an automatic pad printing device for irregular accessories comprises a vibration screening device, a feeding device arranged on one side of the vibration screening device along a first direction and a pad printing device arranged on one side of the vibration screening device along a second direction; wherein the first direction is perpendicular to the second direction; the vibration screening device comprises a vibration material box and a vibration generator, wherein the top of the vibration material box is of an opening structure, and the vibration generator is arranged at the bottom of the vibration material box and is used for dispersing to-be-pad printing accessories with irregular shapes in the vibration material box through vibration; a calibration fixture is arranged on one side of the vibration screening device, which is close to the pad printing device, the calibration fixture is provided with an accommodating cavity with an upward opening, and the shape of the inner side wall of the accommodating cavity is matched with the shape of the fitting to be pad printed; the feeding device is used for extending into the vibration material box to absorb the fitting to be pad printed, placing the fitting to be pad printed into the calibration position and angle in the calibration fixture, and then transferring the fitting to be pad printed after calibration into the pad printing device for pad printing.

Compared with the prior art, the utility model disperses irregular workpieces to be pad printed through the vibration screening device so as to facilitate the feeding device to take materials, and transfers the workpieces to be pad printed into the pad printing device for pad printing after the positions and angles of the workpieces to be pad printed are calibrated through the calibration fixture so as to accurately print paint on the surfaces of accessories.

Further, the automatic pad printing equipment for the irregular fitting comprises two pad printing devices, wherein the two pad printing devices are respectively positioned at two opposite sides of the vibration screening device along the second direction and are adjacent to the feeding device; the vibration screening device further comprises two calibration clamps, the two calibration clamps are respectively arranged on two opposite sides of the vibration material box, which are in the same direction as the two pad printing devices, and each calibration clamp corresponds to one pad printing device.

Further, the automatic pad printing equipment for irregular accessories further comprises an accessory identification device arranged above the vibration screening device, wherein the accessory identification device is used for identifying position information and angle information of the accessories to be pad printed in the vibration material box, and the feeding device adsorbs the accessories to be pad printed according to the position information and the angle information provided by the accessory identification device.

Further, the pad printing device comprises a machine body, a pad printing bottom plate horizontally arranged on the machine body, a pad printing mechanism arranged right above the pad printing bottom plate, and a pad printing travelling mechanism arranged at the front of the pad printing bottom plate along the first direction; the pad printing mechanism comprises a rubber head moving assembly arranged on the machine body and a rubber head arranged at the bottom of the rubber head moving assembly along the second direction, wherein the rubber head naturally hangs down and is opposite to the pad printing bottom plate; the pad printing travelling mechanism comprises a travelling guide rail extending along the second direction, a clamp fixing table in sliding connection with the travelling guide rail, and a pad printing clamp arranged on the clamp fixing table; the pad printing clamp is used for loading the fitting to be pad printed; when the pad printing clamp moves to the position corresponding to the rubber head along the second direction, the rubber head moving assembly drives the rubber head to move to the position right above the pad printing clamp along the first direction, and then drives the rubber head to vertically move downwards so as to be in contact with irregular fittings in the pad printing clamp.

Further, the pad printing device further comprises a rubber head cleaning mechanism arranged at the front of the pad printing bottom plate along the first direction, and the rubber head cleaning mechanism is positioned between the pad printing bottom plate and the pad printing travelling mechanism; the rubber head cleaning mechanism comprises a cleaning fixing plate fixed at the front edge of the pad printing bottom plate, a paper carrying roller arranged at one end of the cleaning fixing plate, which is close to the feeding device along the second direction, a recovery roller arranged at the other end of the cleaning fixing plate along the second direction, a recovery motor for driving the recovery roller to rotate, and a plurality of compression bars arranged between the paper carrying roller and the recovery roller; the recycling motor is provided with an output shaft which is connected with the axle center position of the recycling roller; the pressing rod is positioned above the cleaning fixing plate and extends along the first direction, and a gap is formed between the pressing rod and the cleaning fixing plate; the paper carrying roller is used for carrying clean gummed paper, and the free end of the gummed paper passes through a gap between the pressing rod and the cleaning fixing plate and is wound up to accommodate the recovery roller.

Further, a discharging device and a discharging groove are arranged at the downstream of the pad printing device along the second direction, and the discharging device is used for discharging irregular fittings which finish pad printing in the pad printing clamp into the discharging groove; the blanking device is used for moving the fitting which completes pad printing from the pad printing clamp into the discharging groove.

Further, the automatic pad printing equipment for irregular accessories further comprises a feeding device, the feeding device is arranged on the other side, opposite to the feeding device, of the vibration screening device, and the feeding device is used for conveying the accessories to be pad printed into the vibration material box.

Further, the feeding device comprises a feeding bracket and a conveying table arranged at the top of the feeding bracket; the conveying table has a conveying belt that is movable in the first direction; the feeding groove with an opening at the top is arranged at the head end of the conveying table along the travelling direction of the conveying belt, the bottom of the feeding groove is communicated with the conveying belt, a side opening is arranged on one side, opposite to the vibration screening device, of the feeding groove along the first direction, and a to-be-pad printing accessory falling into the conveying belt from the opening at the top of the feeding groove can flow out from the side opening; a discharging groove is arranged at the tail end of the conveying table along the travelling direction of the conveying belt, and the discharging groove is opposite to the opening of the vibration material box; the conveying table is provided with a first limiting plate and a second limiting plate along two sides perpendicular to the advancing direction of the conveying belt.

Further, the feeding device further comprises an intermediate baffle plate, the intermediate baffle plate is arranged at the top of the conveying table, the intermediate baffle plate extends along the first direction, and the intermediate baffle plate is positioned between the first limiting plate and the second limiting plate and extends into the feeding groove; a first material passing eliminating assembly is arranged between the first limiting plate and the middle partition plate, and a second material passing eliminating assembly is arranged between the second limiting plate and the middle partition plate; the first material passing eliminating assembly comprises a first rotating rod, a plurality of first scratching rods, a plurality of second scratching rods and a first rotating motor; one end of the first rotating rod is fixed on the middle spacing plate, and the other end of the first rotating rod penetrates through the corresponding position of the first limiting plate and is fixedly connected with an output shaft of the first rotating motor; the first scribing rods and the second scribing rods are respectively and alternately distributed along the axial direction of the first rotating rod and vertically penetrate through the first rotating rod; the first drawing bars are positioned on a first plane, the second drawing bars are positioned on a second plane, the first plane is perpendicular to the second plane, and accessories which are correspondingly conveyed by the conveying belt are allowed to pass through between two adjacent first drawing bars and between two adjacent second drawing bars; the second material passing eliminating assembly comprises a second rotating rod, a plurality of third drawing rods, a plurality of fourth drawing rods and a second rotating motor; one end of the second rotating rod is fixed on the middle spacing plate, and the other end of the second rotating rod penetrates through the corresponding position of the second limiting plate and is fixedly connected with an output shaft of the second rotating motor; the third rowing bars and the fourth rowing bars are alternately distributed along the axial direction of the second rotating bar and vertically penetrate through the second rotating bar; the third drawing bars are positioned on a third plane, the fourth drawing bars are positioned on a fourth plane, the third plane is perpendicular to the fourth plane, and accessories which are correspondingly conveyed by the conveying belt are allowed to pass through between every two adjacent third drawing bars and between every two adjacent fourth drawing bars.

Further, the feeding device is a multi-axis mechanical arm.

For a better understanding and implementation, the present utility model is described in detail below with reference to the drawings.

Drawings

FIG. 1 is a perspective view of one embodiment of an automatic pad printing apparatus for irregular parts of the present utility model;

FIG. 2 is a perspective view of a vibratory screening apparatus in an automatic pad printing device for irregular parts according to the present utility model;

FIG. 3 is a perspective view of a loading device in an automatic pad printing apparatus for irregular parts according to the present utility model;

FIG. 4 is a perspective view of a pad printing device in an automatic pad printing apparatus for irregular parts according to the present utility model;

FIG. 5 is an enlarged view of a portion of a pad printing apparatus of an automatic pad printing device for irregular parts according to the present utility model;

FIG. 6 is an enlarged view of a portion of a pad printing apparatus of an automatic pad printing device for irregular parts according to the present utility model;

FIG. 7 is a perspective view of another embodiment of an automatic pad printing apparatus for irregular parts of the present utility model;

FIG. 8 is a perspective view of a fitting identification device in an automatic pad printing apparatus for irregular fittings of the present utility model;

FIG. 9 is a perspective view of yet another embodiment of an automatic pad printing apparatus for irregular parts according to the present utility model;

FIG. 10 is a perspective view of a feed device in an automatic pad printing apparatus for irregular parts according to the present utility model;

FIG. 11 is a perspective view of a feed device in an automatic pad printing apparatus for irregular parts according to the present utility model;

reference numerals: 10. a vibration screening device; 100. vibrating the material box; 101. a vibration support; 102. a vibration generator; 104. calibrating the clamp;

20. a feeding device; 200. a robotic arm clamp; 202. a vacuum suction nozzle;

30. a pad printing device; 300. a body; 302. pad printing a bottom plate; 3040. a rubber head connecting piece; 3042. a rubber head; 3044. a push plate; 3046. an oil cup; the method comprises the steps of carrying out a first treatment on the surface of the 3060. A walking guide rail; 3062. a clamp fixing table; 3064. pad printing clamp; 3066. a fitting securing lever; 3080. cleaning the fixing plate; 3082. paper carrying rollers; 3084. recovering the roller; 3086. a compression bar;

40. a fitting identification device; 400. a fixed bracket; 402. a camera; 404. a light source;

50. a feeding device; 500. a feed support; 502. a conveying table; 5020. a conveyor belt; 5022. a conveying motor; 504. feeding a trough; 506. discharging groove; 507. a first limiting plate; 508. a second limiting plate; 510. a middle partition plate; 511. a first overage elimination assembly; 5111. a first scribe bar; 5112. a second scribing rod; 5114. a first rotating motor; 512. a second overage elimination assembly; 5121. a third rod; 5122. a fourth stroke bar; 5124. a second rotating motor;

60. a blanking device;

70. a discharge chute;

80. a collecting basin;

d1, a first direction; d2, the second direction.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" or "fixedly connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Fig. 1 shows the structure of one embodiment of an automatic pad printing apparatus for irregular parts of the present utility model. As shown in fig. 1, the automatic pad printing apparatus of the present utility model includes a vibratory screening device 10, a feeding device 20 disposed at one side of the vibratory screening device 10 in a first direction D1, and a pad printing device 30 disposed at one side of the vibratory screening device 10 in a second direction D2, wherein the first direction D1 is perpendicular to the second direction D2.

Specifically, as shown in fig. 2, the vibration screening device 10 is integrally rectangular, and includes a vibration material box 100 and a vibration generator 102, wherein the vibration material box 100 is rectangular and is mounted on a vibration bracket 101, and the top of the vibration material box 100 is of an opening structure. The vibration generator 102 is disposed at the bottom of the vibration cartridge 100 for dispersing the parts to be pad printed in the vibration cartridge 100 by vibration, wherein the parts to be pad printed are irregularly shaped. The vibration screening device 10 is provided with a calibration fixture 104 on one side close to the pad printing device 30, the calibration fixture 104 is provided with an accommodating cavity with an upward opening, and the shape of the inner side wall of the accommodating cavity is matched with the shape of the fitting to be pad printed.

As shown in fig. 3, the feeding device 20 is specifically a multi-axis mechanical arm, the free end of the feeding device 20 is provided with a mechanical arm fixture 200, the tail end of the mechanical arm fixture 200 is provided with a vacuum suction nozzle 202 for adsorbing irregular accessories, the vacuum suction nozzle 202 is connected with a vacuum generator (not shown) inside the mechanical arm through a conduit (not shown), and the accessories are taken and placed by controlling the start and stop of the vacuum generator. Since the multi-axis mechanical arm is the prior art, the specific structure thereof will not be described herein.

As shown in fig. 4 to 6, the pad printing apparatus 30 includes a body 300, a pad 302 horizontally disposed on the body 300, a pad printing mechanism 304 disposed directly above the pad 302, and a pad printing travel mechanism 306 disposed in front of the pad 302 in the first direction D1. The machine body 300 is in an inverted "L" shape, and is composed of a column and a beam, wherein the beam of the machine body 300 extends along the first direction D1. The pad printing mechanism 304 is disposed at the bottom of the top beam of the machine body 300, and the pad printing mechanism 304 includes a rubber head moving assembly disposed at the bottom of the top beam of the machine body 300, and a rubber head 3042 disposed at the bottom of the rubber head moving assembly along the second direction D2. The glue head moving assembly is used for driving the glue head 3042 to move back and forth or up and down along the first direction D1, and the glue head 3042 is a silica gel glue head, which naturally vertically moves to the pad printing base plate 302.

The pad printing running mechanism 306 includes a running rail 3060 extending in the second direction D2, a jig fixing table 3062 slidably connected to the running rail 3060, and a pad printing jig 3064 provided on top of the jig fixing table 3062; wherein the pad printing fixture 3064 is used for loading the accessory to be pad printed. The fitting to be pad printed placed in the accommodating cavity of the pad printing clamp 3064 moves to a position corresponding to the first rubber head 3042 along the walking guide rail 3060. The glue head moving assembly drives the glue head 3042 with paint adhered to the bottom to move to the position right above the part to be pad printed along the first direction D1, then drives the glue head 3042 to move downwards to adhere the paint to the surface of the part to be pad printed, and after the completion, the clamp fixing table 3062 continues to move to the position corresponding to the second glue head 3042 along the walking guide rail 3060, and the pad printing process is repeated. The number and size of the glue heads 3042 may be selected according to the number of pad printing and the pattern size range.

Here, the glue head moving assembly may use a telescopic cylinder to drive the glue head 3042 to move up and down, for example, a first telescopic cylinder (not shown) and a second telescopic cylinder (not shown) are disposed in the machine body 300, where a telescopic rod of the first telescopic cylinder (not shown) is parallel to the first direction D1, a free end of the telescopic rod of the first telescopic cylinder is fixedly connected with a body of the second telescopic cylinder (not shown), and a telescopic rod of the second telescopic cylinder (not shown) is perpendicular to the pad printing bottom plate 302, and each glue head 3042 is fixedly connected with a free end of a telescopic rod of the second telescopic cylinder (not shown) through a glue head connecting piece 3040. Of course, other structures of the glue head moving assembly can be adopted, so long as the glue head 3042 can be driven to move back and forth and up and down.

In addition, the pad printing mechanism 304 further includes an ink cup moving assembly disposed inside the upright post of the machine body 300, and an ink cup 3046 fixed to a front end of the ink cup moving assembly along the first direction D1. The ink cups 3046 are positioned above the pad printing base 302 and are in one-to-one correspondence with the glue heads 3042. The ink cups 3046 are used for loading the ink for pad printing, and the ink cup moving assembly drives each ink cup 3046 to move back and forth along the first direction D1. Grooves (not shown) for patterns to be pad printed are etched in the range of movement of each ink cup 3046 in the first direction D1 on the pad printing base plate 302, and the positions of the grooves (not shown) are oil applying positions. When the ink cup 3046 moves to a corresponding oil applying position (not shown) on the pad printing base plate 302 along the first direction D1, the paint quantitatively flows out from the bottom of the ink cup, the paint flows into a groove at the oil applying position, and the corresponding glue head 3042 moves to the corresponding oil applying position (not shown) under the driving of the glue head moving component and moves downwards under the driving of the glue head moving component so as to be in contact with the paint at the oil applying position (not shown) to apply oil. Here, the oil cup moving assembly may also adopt a telescopic cylinder to drive the oil cup 3046 to move back and forth, specifically, a third telescopic cylinder (not shown) is disposed in the column of the machine body 300, a telescopic rod of the third telescopic cylinder (not shown) is parallel to the first direction D1, a free end of the telescopic rod is vertically connected with one side of the push plate 3044, and the other side of the push plate 3044 is fixedly connected with an outer side wall of at least one oil cup 3046 arranged along the second direction D2, so that when the telescopic rod of the third telescopic cylinder (not shown) stretches, each oil cup 3046 can be driven to move along the first direction D1 at the same time. Of course, other structural forms of the ink cup moving assembly can be adopted, so long as the ink cup 3046 can be driven to move back and forth.

Preferably, in order to avoid that the fitting on the pad printing fixture 3064 slides or is misplaced in the pad printing process during the traveling process of the pad printing traveling mechanism 306, an elastic fixing plate 3066 is arranged at the top of the fixture fixing table 3062, one end of the fitting fixing rod 3066 is rotatably connected with the top of the fixture fixing table 3062 through a rotary cylinder (not shown), the other end is a free end, and when the fitting to be pad printed is placed on the pad printing fixture 3064, the rotary cylinder (not shown) drives the fitting fixing rod 3066 to rotate relative to the fixture fixing table 3062, and the free end of the fitting fixing rod is abutted against the edge position of the fitting to be pad printed so as to fix the fitting to be pad printed; after pad printing is completed, the fitting fixing lever 3066 is rotated again with respect to the clamp fixing table 3062 to release the fitting.

Further, the pad printing apparatus 30 also includes a gum head cleaning mechanism. The rubber head cleaning mechanism comprises a cleaning fixing plate 3080, a paper carrying roller 3082 arranged at one end of the cleaning fixing plate 3080 close to the feeding device 20 along the second direction D2, a recovery roller 3084 arranged at the other end of the attack fixing plate 3080 opposite to the paper carrying roller 3082, a recovery motor (not shown) for driving the recovery roller 3084, and a plurality of compression bars 3086 arranged between the paper carrying roller 3082 and the recovery roller 3084. Specifically, the cleaning securing plate 3080 is a rectangular plate that is substantially parallel to the pad printing plate 302. The axis of the paper carrying roller 3082 is parallel to the axis of the recovery roller 3084, wherein the distance from the recovery roller 3084 to the cleaning fixing plate 3080 is greater than the distance from the paper carrying roller 3082 to the cleaning fixing plate 3080. The recovery motor (not shown) has an output shaft fixedly connected to the axial position of the recovery roller 3084 to drive the recovery roller 3084 to rotate. The plurality of pressing bars 3086 are located above the cleaning fixing plate 3080 and extend in the first direction D1, and a gap is provided between the pressing bars 3086 and the cleaning fixing plate 3080. The paper carrying roller 3082 is used for carrying cleaning gummed paper, and the free end of the gummed paper passes through a gap between the pressing rod 3086 and the cleaning fixing plate 3080 and is accommodated in the recovery roller 3084.

When the vibration material box 100 is used, a certain number of accessories to be pad printed are placed in the vibration material box 100, the vibration generator 102 is started, and the vibration generator 102 disperses the accessories to be pad printed in the vibration material box 100 according to the set vibration frequency and the set vibration duration. The vacuum nozzle 202 of the feeding device 20 is aligned with one of the parts to be transferred, the part to be transferred is moved into the calibration fixture 104 by vacuum adsorption to calibrate the position and angle of the part to be transferred, and then the feeding device 20 places the calibrated part to be transferred on the transfer fixture 3064 by vacuum adsorption. At this time, the pad printing jig 3064 is in an initial position close to the vibration screening device 10.

Before placing the parts to be pad printed in the pad printing jig 3064, each oil cup 3046 is placed at a corresponding oil level (not shown), and paint flows out from the bottom to fill the pattern at the oil level. After receiving the incoming signal, the pad printing fixture 3064 on the pad printing device 30 starts to work, and the accessory fixing rod 44 is started to fix the accessory to be pad printed in the pad printing fixture 3064. Then, the ink cup moving assembly drives each ink cup 3046 to move backwards along the first direction D1 on the pad printing base plate 302 to expose the pattern filled with the paint in the oiling position, and simultaneously, the glue head moving assembly drives each glue head 3042 to move backwards along the first direction D1 to be right above the oiling position, and then drives each glue head 3042 to move vertically downwards to enable the glue heads 3042 to be in contact with the paint pattern in the oiling position, so that the pattern is adhered to the glue guide heads 3042. After the oiling is completed, the rubber head moving assembly drives the rubber head 3042 to vertically reset upwards, then the rubber head moving assembly drives the rubber head 3042 to move to a position right above the walking guide rail 3060 along the first direction D1, and at the same time, the oil cup moving assembly drives the oil cup 3046 to reset to an oiling position, so that the oil cup 3046 fills the patterns of the oiling position with paint again.

When the feeding device 20 places the parts to be pad printed on the pad printing clamp 3064, the pad printing device 30 receives the incoming material signal and starts working. Firstly, the free end of the fitting fixing rod 3066 is pressed against the workpiece to be pad printed under the driving of the rotary cylinder, after the fixing is completed, the fixture fixing table 3062 is driven by a power source (such as a telescopic cylinder or a step motor) to move to a position opposite to the first glue head along the second direction D2, then the glue head moving assembly drives the glue head 3042 to press down, the pattern on the first glue head is printed on the surface of the workpiece to be pad printed, after the fixing is completed, the fixture fixing table 3062 is moved to a position opposite to the second glue head 3042, the pattern on the first glue head is printed on the surface of the workpiece to be pad printed under the driving of the glue head moving assembly, and the operation is repeated until the printing of all glue heads is completed. After printing is completed, the fitting can be removed. After the fitting is removed, the head moving assembly drives the head 3042 to move in the first direction D1 to a position directly above the cleaning fixing plate 3080, and then drives the head 3042 to move vertically downward. When the glue head 3042 contacts with the cleaning glue paper on the cleaning fixing plate 3080, the recycling motor (not shown) drives the recycling roller 3084 to rotate, drives the cleaning glue paper to move along the second direction D2, wipes off the paint remained on the surface of the glue head 3042, and then performs the next pad printing operation.

Since the automatic pad printing device comprises two pad printing devices 30, the two pad printing devices 30 can simultaneously perform pad printing, so that the production efficiency is doubled.

Further, the pad printing device 30 of the automatic pad printing apparatus for upper irregular parts is further provided with a discharging device 60 and a discharge chute 70 downstream in the second direction D2. The blanking device 60 has a suction nozzle to suck the pad-printed parts and put them into the discharge chute 70. The spout 70 is inclined from top to bottom, a discharge cylinder (not shown) is provided at the top end of the spout 70, and the accessory slides down from the top end of the spout 70 to the collecting basin 80 at the end of the spout 70 under the pushing of a push rod cylinder (not shown) to realize automatic discharge.

As shown in fig. 7, in some embodiments, the automatic pad printing apparatus for irregular parts described above further includes a part recognition device 40 disposed above the vibration screening device 10. As shown in fig. 8, the accessory recognition device 40 includes a fixed bracket 400, a camera 402 and a light source 404 provided on the fixed bracket 400, and a control system (not shown). The fixing bracket 400 is approximately Z-shaped, a camera 402 and a light source 404 are arranged at the top and the bottom of the fixing bracket, the camera 402 is opposite to the vibration material box 100, and the light source 404 is arranged around the camera 402 to supplement light to the camera 402. The camera 402 is used to image irregular parts dispersed in the vibration pod 100 and transmit the formed video data to a control system (not shown). A control system (not shown) analyzes the video data, identifies coordinates and angles of the precisely oriented products, determines the number of acceptable products, and transmits the processed data to the loading device 20. The feeding device 20 extends into the vibration magazine 100 to absorb irregular accessories according to the position information and the angle information provided by the accessory identification device 40, and transfers the irregular accessories into the pad printing device 30 for pad printing. Since the computer technology for identifying, analyzing and valuing the video data is the mature prior art (such as the visual inspection identification control system in the chinese patent CN 211542818U), the method for determining the number of qualified products is not repeated for how to identify the coordinates and angles of the products aligned to the determined direction by typing the video data.

As shown in fig. 9, in some embodiments, the automatic pad printing apparatus for irregular parts described above further includes a feeding device 50. In particular, as shown in fig. 10-11, the feeding device 50 includes a feeding stand 500 and a conveying table 502 provided on top of the feeding stand 500. The conveyor table 502 has a conveyor belt 5020 that can travel in a first direction, wherein the conveyor belt 5020 is driven by a conveyor motor 5022. The conveying table 502 is provided with a feeding groove 504 with an open top along the travelling direction of the conveying belt 5020, and the bottom of the feeding groove 504 is communicated with the conveying belt 5020. The side of the feeding trough 504 facing the vibratory screening device 10 along the first direction D1 is provided with a side opening, so that the to-be-pad-printed parts added from the top opening of the feeding trough 504 fall into the conveying belt 5020 and flow out from the side outlet of the feeding trough 504 under the drive of the conveying belt 5020. The end of the conveying table 502 along the traveling direction of the conveying belt 5020 is provided with a discharging groove 506, the discharging groove 506 is opposite to the opening of the vibrating magazine 100 of the vibrating screening device 10, and the conveying belt 5020 conveys irregular workpieces with pad printing to the discharging groove 506 and falls into the vibrating magazine 100 through the discharging groove 506. Further, the two sides of the conveying table 502 along the second direction D2 are respectively provided with a first limiting plate 507 and a second limiting plate 508, so as to prevent the to-be-pad printing accessory from sliding off the conveying belt 5020 in the advancing process of the conveying belt 5020.

When the automatic pad printing apparatus for the to-be-pad printed accessory includes two pad printing devices 30, pad printing can be performed on the to-be-pad printed accessory of two different structures simultaneously. For synchronously feeding the two parts to be pad printed with different structures, a middle partition plate 510 is arranged at the middle position of the top of the conveying table 502 of the feeding device 50, and the middle partition plate 510 is positioned between the first limiting plate 507 and the second limiting plate 508 and extends to the inside of the feeding trough 504. The middle partition plate 510 divides the conveying table 502 into a first conveying channel and a second conveying channel, and simultaneously divides the interior of the feeding trough 504 into a first bin and a second bin for sub-packaging the to-be-pad printing accessories with different structures.

Further, since the number of parts to be pad printed that may be added is too large when the parts are manually fed to the feeding groove 504, a large number of parts to be pad printed are continuously transported to the vibration screening device 10 in a short time, and the parts are stacked in the vibration screening device 10, which may affect the clamping of the parts by the feeding device 20. In order to avoid too many parts to be pad printed being transferred into the vibration box 100, in the feeding device 50, a first material passing eliminating component 511 is disposed between the first limiting plate 507 and the middle partition 510, and a second material passing eliminating component 512 is disposed between the second limiting plate 508 and the middle partition 510.

Specifically, the first excess material removing assembly 511 includes a first rotating lever (not shown), a plurality of first and second scribing levers 5111 and 5112, and a first rotating motor 5114. One end of a first rotating rod (not shown) is fixed on the middle partition plate 510, and the other end penetrates through the corresponding position of the first limiting plate 507 and is fixedly connected with an output shaft of the first rotating motor 5114; the first and second scribing rods 5111 and 5112 are alternately distributed along an axial direction of a first rotating rod (not shown) and vertically penetrate the first rotating rod (not shown), wherein each first scribing rod 5111 is located on a first plane, each second scribing rod 5112 is located on a second plane, and the first plane is perpendicular to the second plane, so that the adjacent two first and second scribing rods 5111 and 5112 are in a cross shape. The second excess material removing assembly 512 includes a second rotating lever (not shown), a plurality of third and fourth scribing levers 5121 and 5122, and a second rotating motor 5124. One end of a second rotating rod (not shown) is fixed on the middle partition plate 510, the other end of the second rotating rod penetrates through the corresponding position of the second limiting plate 508 and is fixedly connected with an output shaft of the second rotating motor 5124, and the third and fourth dividing rods 5121 and 5122 are alternately distributed along the axial direction of the second rotating rod (not shown) and vertically penetrate through the second rotating rod (not shown) respectively; wherein, each third pole 5121 is located in a third plane, each fourth pole 5122 is located in a fourth plane, and the third plane is perpendicular to the fourth plane, so that two adjacent third poles 5121 and fourth poles 5122 are in a cross shape.

Because the irregular fittings to be pad printed of the model car are mostly in a strip-shaped flat structure, the model car has a long side and a short side, and the distance between two adjacent first drawing rods 5111 and the distance between two adjacent second drawing rods 5112 are larger than the short side length of the fittings correspondingly conveyed by the conveying belt 5020 and smaller than the long side length of the fittings. Similarly, the distance between the adjacent third and fourth bars 5121 and 5122 is greater than the short side length of the conveyor 5020 and the long side length of the fitting. Of course, the distance between the adjacent two first scribing bars 5111 and the distance between the adjacent two second scribing bars 5112 can be adjusted according to the size of the accessory to be correspondingly conveyed; similarly, the distance between the adjacent third bars 5121 and the distance between the adjacent fourth bars may be adjusted according to the size of the accessory to be conveyed.

When the feeding device 50 works, the first rotating motor 5114 of the first overfeeding eliminating assembly 511 drives the first rotating rod (not shown) to rotate, so that the first rod 5111 and the second rod 5112 are driven to rotate, when the number of accessories conveyed by the conveying belt 5020 is too large, stacking is formed, when the accessories are conveyed by the first overfeeding eliminating assembly 511, as the positions and angles of the stacked accessories are different, the accessories can be blocked from passing under the action of the first rod 5111 and the second rod 5112, only part of the accessories can continuously move forwards, and the accessories under the basket can continuously move after the positions and angles are adjusted, so that a large number of accessories are prevented from being conveyed into the vibration screening device 10 in unit time. The second material removing unit 512 has the same working principle as the first material removing unit 511, and thus will not be described herein.

Compared with the prior art, the utility model disperses irregular workpieces to be pad printed through the vibration screening device so as to facilitate the feeding device to take materials, and transfers the workpieces to be pad printed to the pad printing device for pad printing after the positions and angles of the workpieces to be pad printed are calibrated through the calibration fixture so as to accurately print paint on the surfaces of accessories.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and the utility model is intended to encompass such modifications and improvements.

Claims (10)

1. An automatic pad printing device for irregular fittings, characterized in that: comprises a vibration screening device (10), a feeding device (20) arranged at one side of the vibration screening device (10) along a first direction and a pad printing device (30) arranged at one side of the vibration screening device (10) along a second direction; wherein the first direction is perpendicular to the second direction;

the vibration screening device (10) comprises a vibration material box (100) and a vibration generator (102), wherein the top of the vibration material box (100) is of an opening structure, and the vibration generator (102) is arranged at the bottom of the vibration material box (100) and is used for dispersing to-be-pad printing accessories with irregular shapes in the vibration material box (100) through vibration;

a calibration clamp (104) is arranged on one side of the vibration screening device (10) close to the pad printing device (30), the calibration clamp (104) is provided with an accommodating cavity with an upward opening, and the shape of the inner side wall of the accommodating cavity is matched with the shape of the fitting to be pad printed;

the feeding device (20) is used for extending into the vibration material box (100) to absorb the to-be-pad-printed accessory, placing the to-be-pad-printed accessory into the calibration position and angle in the calibration fixture (104), and then transferring the calibrated to-be-pad-printed accessory into the pad printing device (30) for pad printing.

2. An automatic pad printing apparatus for irregular parts according to claim 1, wherein:

the device comprises two pad printing devices (30), wherein the two pad printing devices (30) are respectively positioned at two opposite sides of the vibration screening device (10) along the second direction and are adjacent to the feeding device (20);

the vibration screening device (10) further comprises two calibration clamps (104), the two calibration clamps (104) are respectively arranged on two opposite sides of the vibration material box (100) in the same direction as the two pad printing devices (30), and each calibration clamp (104) corresponds to one pad printing device (30).

3. An automatic pad printing apparatus for irregular parts according to claim 1, wherein:

the vibration screening device is characterized by further comprising a fitting identification device (40) arranged above the vibration screening device (10), wherein the fitting identification device (40) is used for identifying position information and angle information of a fitting to be pad printed in the vibration material box (100) and the feeding device (20) is used for adsorbing the fitting to be pad printed according to the position information and the angle information provided by the fitting identification device (40).

4. An automatic pad printing apparatus for irregular parts according to claim 1, wherein:

the pad printing device comprises a machine body (300), a pad printing bottom plate (302) horizontally arranged on the machine body (300), a pad printing mechanism arranged right above the pad printing bottom plate (302) and a pad printing travelling mechanism arranged at the front of the pad printing bottom plate (302) along the first direction;

the pad printing mechanism comprises a rubber head moving assembly arranged on the machine body (300) and a rubber head (3042) arranged at the bottom of the rubber head moving assembly along the second direction, wherein the rubber head naturally hangs down and is opposite to the pad printing bottom plate (302);

the transfer printing travelling mechanism comprises a travelling guide rail (3060) extending along the second direction, a clamp fixing table (3062) connected with the travelling guide rail (3060) in a sliding mode, and a transfer printing clamp (3064) arranged on the clamp fixing table (3062); wherein the pad printing clamp (3064) is used for loading the fitting to be pad printed;

when the pad printing clamp (3064) advances to a position corresponding to the glue head (3042) along the second direction, the glue head moving component drives the glue head (3042) to move to be right above the pad printing clamp (3064) along the first direction, and drives the glue head (3042) to vertically move downwards to be in contact with irregular fittings in the pad printing clamp (3064).

5. An automatic pad printing apparatus for irregular parts according to claim 4, wherein:

the pad printing device (30) further comprises a rubber head cleaning mechanism arranged at the front of the pad printing bottom plate (302) along the first direction, wherein the rubber head cleaning mechanism is positioned between the pad printing bottom plate (302) and the pad printing travelling mechanism;

the rubber head cleaning mechanism comprises a cleaning fixing plate (3080) fixed at the front edge of the pad printing bottom plate (302), a paper carrying roller (3082) arranged at one end of the cleaning fixing plate (3080) close to the feeding device (20) along the second direction, a recovery roller (3084) arranged at the other end of the cleaning fixing plate along the second direction, a recovery motor for driving the recovery roller (3084) to rotate, and a plurality of compression bars (3086) arranged between the paper carrying roller (3082) and the recovery roller (3084);

the recovery motor is provided with an output shaft which is connected with the axle center position of the recovery roller (3084);

the pressing rod (3086) is located above the cleaning fixing plate (3080) and extends along the first direction, and a gap is formed between the pressing rod (3086) and the cleaning fixing plate (3080);

the paper carrying roller (3082) is used for carrying clean gummed paper, and the free end of the gummed paper passes through a gap between the pressing rod (3086) and the cleaning fixing plate (3080) and is wound up to contain the recovery roller (3084).

6. An automatic pad printing apparatus for irregular parts according to claim 5, wherein:

a discharging device (60) and a discharging groove (70) are arranged at the downstream of the pad printing device (30) along the second direction, and the discharging device (60) is used for discharging irregular fittings which finish pad printing in the pad printing clamp (3064) into the discharging groove (70);

the blanking device (60) is used for moving the fitting which is subjected to pad printing from the pad printing clamp (3064) into the discharging groove (70).

7. An automatic pad printing apparatus for irregular parts according to claim 1, wherein:

the device further comprises a feeding device (50), wherein the feeding device (50) is arranged on the other side, opposite to the feeding device (20), of the vibration screening device (10), and the feeding device (50) is used for conveying the to-be-pad printing accessory into the vibration material box (100).

8. An automatic pad printing apparatus for irregular parts according to claim 7, wherein:

the feeding device (50) comprises a feeding bracket (500) and a conveying table (502) arranged at the top of the feeding bracket (500);

the transport table (502) has a transport belt (5020) that can travel in the first direction;

the feeding device comprises a conveying table (502), wherein a feeding groove (504) with an open top is formed in the head end of the conveying table along the advancing direction of a conveying belt (5020), the bottom of the feeding groove (504) is communicated with the conveying belt (5020), a side opening is formed in one side, opposite to the vibration screening device (10), of the feeding groove (504) along the first direction, and a to-be-pad printing accessory falling into the conveying belt (5020) from the open top of the feeding groove (504) can flow out from the side opening;

a blanking groove (506) is formed in the tail end of the conveying table (502) along the advancing direction of the conveying belt (5020), and the blanking groove (506) is opposite to the opening of the vibration material box (100);

the conveying table (502) is provided with a first limiting plate (507) and a second limiting plate (508) along two sides perpendicular to the advancing direction of the conveying belt (5020) respectively.

9. An automatic pad printing apparatus for irregular parts according to claim 8, wherein:

the feeding device (50) further comprises an intermediate baffle (510), the intermediate baffle (510) is arranged at the top of the conveying table (502) and is provided with the intermediate baffle (510) extending along the first direction, and the intermediate baffle (510) is positioned between the first limiting plate (507) and the second limiting plate (508) and extends into the feeding groove (504);

a first material passing elimination assembly (511) is arranged between the first limiting plate (507) and the middle partition plate (510), and a second material passing elimination assembly (512) is arranged between the second limiting plate (508) and the middle partition plate (510);

the first overfeeding eliminating assembly (511) comprises a first rotating rod, a plurality of first rowing rods (5111) and a plurality of second rowing rods (5112), and a first rotating motor (5114);

one end of the first rotating rod is fixed on the middle partition plate (510), and the other end of the first rotating rod penetrates through the corresponding position of the first limiting plate (507) and is fixedly connected with an output shaft of the first rotating motor (5114);

the first and second scribing rods (5111, 5112) are alternately distributed along the axial direction of the first rotating rod respectively and vertically penetrate through the first rotating rod;

wherein each first rod (5111) is located on a first plane, each second rod (5112) is located on a second plane, the first plane is perpendicular to the second plane, and fittings which are correspondingly conveyed by the conveying belt (5020) are allowed to pass through between two adjacent first rods (5111) and between two adjacent second rods (5112);

the second overfeeding eliminating assembly (512) comprises a second rotating rod, a plurality of third dividing rods (5121) and a plurality of fourth dividing rods (5122), and a second rotating motor (5124);

one end of the second rotating rod is fixed on the middle spacing plate, and the other end of the second rotating rod penetrates through the corresponding position of the second limiting plate (508) and is fixedly connected with an output shaft of the second rotating motor (5124);

the third and fourth scribing rods (5121, 5122) are alternately distributed along the axial direction of the second rotating rod and vertically penetrate through the second rotating rod;

wherein each third rod (5121) is located in a third plane, each fourth rod (5122) is located in a fourth plane, the third plane is perpendicular to the fourth plane, and fittings which are correspondingly conveyed by the conveying belt (5020) are allowed to pass through between every two adjacent third rods (5121) and between every two adjacent fourth rods (5122).

10. An automatic pad printing apparatus for irregular parts according to any one of claims 1 to 9, wherein:

the feeding device (20) is a multi-axis mechanical arm.

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