A pad printing machine

Abstract

The present invention discloses a pad printing machine, comprising a frame, a loading device mounted on the frame, a pad printing head, and an ink device; the loading device comprises a first loading seat, a second loading seat, and a loading drive device that drives the first and second loading seats to switch back and forth between a loading station and a pad printing station; the pad printing head comprises a silicone head, a silicone head fixing device connected to the silicone head, and a head drive device that drives the silicone head fixing device to move between the ink device and the loading device; the ink device comprises a pad printing plate, an oil cup mounted above the pad printing plate, an oil cup drive device that drives the oil cup along the upper surface of the pad printing plate, and an ink removal device disposed between the pad printing plate and the pad printing station; the pad printing machine also comprises a roller device and a blow-drying device. The present invention can simultaneously unload and load materials, automatically remove dust, automatically pad print, automatically blow dry, and automatically remove ink during pad printing.

Description

Technical Field

[0001] The present invention relates to a printing device, more specifically to a pad printing machine. Background Art

[0002] A pad printer typically consists of a loading device, a pad printing head, and an ink dispenser. The product to be printed, such as plastic, toys, or glass, is placed on the loading device. The pad printing head is equipped with a silicone pad. The ink dispenser includes a steel sheet etched with a pattern and an ink cup for applying ink to the sheet. The silicone pad absorbs the ink from the sheet, which is then moved over the product to be printed, where it is transferred onto the product. However, existing pad printers lack a high degree of automation. Summary of the Invention

[0003] The present invention provides a pad printing machine in order to solve the technical problem that the automation level of the pad printing machine in the prior art is not high enough.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is to design a pad printing machine, including a frame, a loading device arranged on the frame, a pad printing head arranged on the frame and an ink device arranged on the frame, the loading device including a first loading seat, a second loading seat and a loading drive device for driving the first loading seat and the second loading seat to switch back and forth between the loading station and the pad printing station; the pad printing head includes a silicone head, a silicone head fixing device connected to the silicone head, and a head driving device for driving the silicone head fixing device to move between the ink device and the loading device; the ink device includes a pad printing steel plate, an oil cup arranged above the pad printing steel plate, an oil cup driving device for driving the oil cup to move along the upper surface of the pad printing steel plate, and an ink removal device provided between the pad printing steel plate and the pad printing station;

[0005] The pad printing machine also includes:

[0006] A roller device is provided on one side of the feeding device, the roller device comprising a dust removal roller and a roller driving device for driving the dust removal roller to roll along the upper surface of the first feeding seat or the second feeding seat at the feeding station;

[0007] The drying device is arranged at one side of the pad printing station, and the drying device blows out hot air to the first loading seat or the second loading seat located at the pad printing station.

[0008] The feeding device also includes:

[0009] a first front lifting seat, which is fixed on the frame;

[0010] a first rear lifting seat fixed to the frame, facing the first front lifting seat and located behind the first front lifting seat;

[0011] The first loading seat includes:

[0012] a first loading plate, wherein the first front lifting seat is located below the first loading plate;

[0013] a loading plate support frame, which is fixed below the first loading plate and can move along the first front lifting seat and the first rear lifting seat;

[0014] The second loading seat includes a second loading plate;

[0015] When the first loading plate is located at the loading station and the pad printing station, the loading plate support frame is supported on the first front lifting seat and the first rear lifting seat respectively, and the first loading plate and the second loading plate are located at the same height;

[0016] The loading drive device drives the first loading plate and the second loading plate to move synchronously in opposite directions, and during the movement, the first loading plate first moves downward to the bottom of the second loading plate, is offset from the second loading plate, and then moves upward to the same height as the second loading plate.

[0017] The first front lifting seat includes:

[0018] a first front horizontal surface, which is provided on the front upper surface of the first front lifting seat;

[0019] a first front lifting inclined surface, which is provided at the rear end of the first front lifting seat and is inclined from the rear end of the first front horizontal surface toward the rear and downward;

[0020] a second front lifting inclined surface, which is provided on one side of the first front lifting inclined surface and is inclined rearward and downward from the rear end of the first front horizontal surface;

[0021] The first rear lifting seat comprises:

[0022] a first rear horizontal surface, which is provided on the upper surface of the rear end of the first rear lifting seat;

[0023] a first rear lifting inclined surface, which is provided at the front end of the first rear lifting seat and is inclined from the front end of the first rear horizontal surface toward the front and bottom;

[0024] a second rear lifting inclined surface, which is provided on one side of the first rear lifting inclined surface and is inclined from the front end of the first rear horizontal surface toward the front and bottom;

[0025] When the first loading plate is located at the loading station and the pad printing station, the loading plate support frame is supported on the first front horizontal plane and the first rear horizontal plane respectively;

[0026] The loading plate support frame includes:

[0027] A front loading plate support frame, comprising a front support rod with an upper end fixedly connected to the first loading plate and a first rolling wheel provided at a lower end of the front support rod and rotatable relative to the front support rod;

[0028] A rear loading plate support frame, comprising a rear support rod with an upper end fixedly connected to the first loading plate and a second rolling wheel provided at a lower end of the rear support rod and rotatable relative to the rear support rod;

[0029] The first rolling wheel corresponds to the first front lifting slope and the first rear lifting slope and rolls along the first front lifting slope and the first rear lifting slope;

[0030] The second rolling wheel rolls with the second front lifting slope and the second rear lifting slope and along the second front lifting slope.

[0031] The first loading seat also includes:

[0032] a first support plate, which is arranged below the first loading plate; the lower ends of the front support rod and the rear support rod pass through the first support plate and can move up and down relative to the first support plate;

[0033] a buffer support rod, the upper end of which is fixedly connected to the first loading plate, and the lower end of which passes through the first support plate and can move up and down relative to the first support plate;

[0034] a buffer spring, which is sleeved on the buffer support rod and clamped between the first support plate and the first loading plate;

[0035] The loading device further includes a first guide rail and a second guide rail; the first support plate is connected to the first guide rail and can move forward and backward relative to the first guide rail; the second loading plate is connected to the second guide rail and can move forward and backward relative to the second guide rail;

[0036] The feeding drive device comprises:

[0037] A feeding drive motor and a feeding drive belt, wherein the feeding drive belt drives the first support plate and the second feeding plate to move forward and backward under the drive of the feeding drive motor.

[0038] The pad printing head further includes a gantry fixed to the frame;

[0039] The head drive device comprises:

[0040] A first head drive device drives the silicone head fixing device to move back and forth; the first head drive device includes a first head drive motor, a first drive screw and a first head base;

[0041] A second head drive device drives the silicone head fixing device to move left and right; the second head drive device includes a second head drive motor, a second drive screw and a second head base;

[0042] The third machine head driving device drives the silicone head fixing device to move up and down; the third machine head driving device includes a third machine head driving motor, a third driving screw and a third machine head base; the silicone head fixing device is fixedly connected to the third machine head base.

[0043] The silicone head fixing device includes a silicone head fixing seat, an equally divided pitch variable module, a silicone head seat, a first up and down fine-tuning seat, a first front and back fine-tuning seat and a first left and right fine-tuning seat; the silicone head is connected to the bottom of the first left and right fine-tuning seat.

[0044] The ink device also includes an oil change cup plate provided on one side of the pad printing steel plate, the oil change cup plate is detachably connected to the frame; the oil cup is detachably connected to the oil cup drive device; the oil cup drive device drives the oil cup to move above the oil change cup plate, and the oil cup is removed, and the oil cup is attracted to the oil change cup plate.

[0045] The oil cup driving device includes an oil cup driving motor and an oil cup driving seat. The oil cup driving seat includes an oil cup driving base connected to the oil cup driving motor and moving left and right under the drive of the oil cup driving motor, and an oil cup fixing rod provided above the oil cup driving base.

[0046] The oil cup comprises:

[0047] An oil cup seat is detachably connected to the oil cup fixing rod; an oil cup hole is provided on the oil cup seat;

[0048] An oil cup body, the upper end of which passes through the oil cup hole and is positioned in the oil cup hole;

[0049] The oil cup positioning blocks include two blocks, which are respectively arranged at the front and rear sides of the oil cup body, and the oil cup body is clamped and positioned between the two oil cup positioning blocks.

[0050] The ink device further comprises a support plate fixed on the frame, and the pad printing steel plate is fixed on the support plate;

[0051] The ink removal device comprises:

[0052] A tape reel motor, which is fixed on the frame;

[0053] a first tape reel connected to the tape reel motor and driven to rotate by the tape reel motor;

[0054] a second tape reel, which is disposed on the frame and can rotate relative to the frame; the first tape reel and the second tape reel are disposed opposite each other and are respectively disposed on the left and right sides of the frame;

[0055] The adhesive tape positioning roller is arranged on the support plate, and an adhesive tape gap for the adhesive tape to pass through is provided between the adhesive tape positioning roller and the upper surface of the support plate.

[0056] The blow-drying device includes a blow-drying drive motor, a blow-drying rack, a hot air generator and an air nozzle. The blow-drying rack is connected to the blow-drying drive motor and moves back and forth under the drive of the blow-drying drive motor; the air nozzle includes multiple air nozzles, which are evenly distributed on the blow-drying rack. The air nozzles are connected to the hot air generator through an air pipe; the air nozzles correspond one-to-one to the silicone heads.

[0057] The present invention provides a loading device, wherein the product to be pad printed is placed on a first loading seat. A roller driving device drives the roller to remove dust from the product to be pad printed. The loading driving device then transports the product to be pad printed to a pad printing station. An ink cup driving device drives the ink cup to move to the other side of the pad printing plate. A head driving device drives the silicone head to remove ink and pad print a pattern or text onto the product. The silicone head is then driven to move to an ink removal device to remove residual ink on the silicone head. A drying device then dries the printed product. While the product on the first loading seat is being pad printed, a new product to be pad printed can be placed on a second loading seat. After the product on the first loading seat is pad printed, the second loading seat moves to the pad printing station, the first loading seat moves to the loading station, and pad printing begins on the product on the second loading seat. The first loading seat then unloads and loads the product. This cycle is repeated, and the functions of unloading and loading, automatic dust removal, automatic pad printing, automatic drying, and automatic ink removal can be achieved simultaneously, greatly improving pad printing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The present invention is described in detail below with reference to the embodiments and accompanying drawings, in which:

[0059] Figure 1 It is a structural diagram of the pad printing machine of the present invention;

[0060] Figure 2 This is a structural diagram of the pad printing machine of the present invention from another perspective;

[0061] Figure 3 It is a structural diagram of the pad printing machine feeding device of the present invention;

[0062] Figure 4 This is a structural diagram of the pad printing machine loading device from another perspective of the present invention;

[0063] Figure 5 This is a structural diagram of the pad printing machine loading device from another perspective of the present invention;

[0064] Figure 6 is a cross-sectional view of a pad printing machine loading device of the present invention;

[0065] Figure 7 is a cross-sectional view of the pad printing machine loading device of the present invention from another perspective;

[0066] Figure 8 This is a structural diagram of the pad printing head of the pad printing machine of the present invention;

[0067] Figure 9 This is a structural diagram of the pad printing head of the pad printing machine of the present invention from another perspective;

[0068] Figure 10 This is a structural diagram of the silicone head fixing device of the pad printing machine of the present invention;

[0069] Figure 11 This is a structural diagram of the silicone head fixing device of the pad printing machine of the present invention from another perspective;

[0070] Figure 12 This is a structural diagram of the first vertical fine-tuning seat, the first front-back fine-tuning seat, and the first left-right fine-tuning seat of the pad printing machine of the present invention;

[0071] Figure 13 This is a structural diagram of the first vertical fine-tuning seat, the first front-back fine-tuning seat, and the first left-right fine-tuning seat of the pad printing machine of the present invention from another perspective;

[0072] Figure 14 It is a structural diagram of the ink device of the pad printing machine of the present invention;

[0073] Figure 15 This is a structural diagram of the ink device of the pad printing machine of the present invention from another perspective;

[0074] Figure 16 It is an exploded view of the pad printing machine oil cup fixing rod and the oil cup of the present invention. DETAILED DESCRIPTION

[0075] The specific embodiments of the present invention are further described below with reference to the accompanying drawings:

[0076] Please also see Figures 1 to 16 The pad printing machine of the present invention comprises a frame 1, a loading device 2 arranged on the frame, a pad printing head 3 arranged on the frame, an ink device 4, a roller device 5 and a drying device 6 arranged on the frame.

[0077] The loading device 2 includes a first loading seat 21, a second loading seat 22 and a loading drive device 23 for driving the first loading seat 21 and the second loading seat 22 to switch back and forth between the loading station and the pad printing station.

[0078] The pad printing head 3 includes a silicone head 31, a silicone head fixing device 32 connected to the silicone head, and a head driving device 33 for driving the silicone head fixing device to move between the ink device and the feeding device.

[0079] The ink device 4 includes a pad printing steel plate 41, an oil cup 42 arranged above the pad printing steel plate, an oil cup driving device 43 that drives the oil cup to move along the upper surface of the pad printing steel plate, and an ink removal device 44 arranged between the pad printing steel plate and the pad printing station.

[0080] In this specific implementation, the pad printing steel plate 41 adopts a long pad printing steel sheet and includes multiple ones, which can not only supply more silicone heads to take ink, but also can pad print a variety of colors and patterns, thereby improving pad printing efficiency and ultimately increasing product output.

[0081] The roller device 5 is arranged on one side of the loading device, and the roller device includes a dust removal roller 51 and a roller driving device 52 that drives the dust removal roller to roll along the upper surface of the first loading seat or the second loading seat at the loading station.

[0082] The drying device 6 is provided at one side of the pad printing station, and the drying device blows out hot air to the first loading seat or the second loading seat located at the pad printing station.

[0083] The present invention provides a loading device, wherein the product to be pad printed is placed on a first loading seat. A roller driving device drives the roller to remove dust from the product to be pad printed. The loading driving device then transports the product to be pad printed to a pad printing station. An ink cup driving device drives the ink cup to move to the other side of the pad printing plate. A head driving device drives the silicone head to remove ink and pad print a pattern or text onto the product. The silicone head is then driven to move to an ink removal device to remove residual ink on the silicone head. A drying device then dries the printed product. While the product on the first loading seat is being pad printed, a new product to be pad printed can be placed on a second loading seat. After the product on the first loading seat is pad printed, the second loading seat moves to the pad printing station, the first loading seat moves to the loading station, and pad printing begins on the product on the second loading seat. The first loading seat then unloads and loads the product. This cycle is repeated, and the functions of unloading and loading, automatic dust removal, automatic pad printing, automatic drying, and automatic ink removal can be achieved simultaneously, greatly improving pad printing efficiency.

[0084] The loading device further includes a first front lifting seat 26 and a first rear lifting seat 27.

[0085] The first front lifting seat 26 is fixed on the frame.

[0086] The first rear lifting seat 27 is fixed on the frame, facing the first front lifting seat and located behind the first front lifting seat.

[0087] The first loading seat 21 includes a first loading plate 211 and a loading plate support frame 214 .

[0088] The first front lifting seat 26 is located below the first loading plate 211. The loading plate support frame 214 is fixed below the first loading plate and can move along the first front lifting seat and the first rear lifting seat.

[0089] The second loading seat 22 includes a second loading plate 221 .

[0090] When the first loading plate is located at the loading station and the pad printing station, the loading plate support frame is supported on the first front lifting seat and the first rear lifting seat respectively, and the first loading plate and the second loading plate 221 are located at the same height.

[0091] The loading drive 23 drives the first and second loading plates to move synchronously in opposite directions. The first loading plate first moves downward to below the second loading plate, offset from the second loading plate, and then moves upward to the same height as the second loading plate. This allows simultaneous loading and unloading of materials during pad printing, greatly improving work efficiency.

[0092] The first front lifting seat 26 includes a first front horizontal surface 261 , a first front lifting inclined surface 262 , and a second front lifting inclined surface 263 .

[0093] in:

[0094] A first front horizontal surface 261 is provided on the front upper surface of the first front lift base 26. A first front lift inclined surface 262 is provided at the rear end of the first front lift base, sloping downward and rearward from the rear end of the first front horizontal surface. A second front lift inclined surface 263 is provided on one side of the first front lift inclined surface, sloping downward and rearward from the rear end of the first front horizontal surface.

[0095] By providing the first front lifting slope and the second front lifting slope, the loading plate support frame can slowly descend during the movement, thereby reducing vibration and allowing the first loading plate to slowly rise and fall.

[0096] The first rear lifting seat 27 includes a first rear horizontal surface 271 , a first rear lifting inclined surface 272 , and a second rear lifting inclined surface 273 .

[0097] in:

[0098] A first rear horizontal surface 271 is provided on the upper surface of the rear end of the first rear lift seat. A first rear lift inclined surface 272 is provided at the front end of the first rear lift seat, sloping forward and downward from the front end of the first rear horizontal surface. A second rear lift inclined surface 273 is provided on one side of the first rear lift inclined surface, sloping forward and downward from the front end of the first rear horizontal surface.

[0099] Similarly, by providing the first rear lifting inclined surface and the second rear lifting inclined surface, vibration can be reduced, so that the first loading plate can be lifted and lowered slowly.

[0100] When the first loading plate is located at the loading station and the pad printing station, the loading plate support frame is supported on the first front horizontal plane and the first rear horizontal plane respectively.

[0101] The loading plate support frame 214 includes a front loading plate support frame 2141 and a rear loading plate support frame 2142.

[0102] The front loading plate support frame 2141 includes a front support rod 21411 whose upper end is fixedly connected to the first loading plate and a first rolling wheel 21412 provided at the lower end of the front support rod 21411 and rotatable relative to the front support rod.

[0103] The rear loading plate support frame 2142 includes a rear support rod 21421 whose upper end is fixedly connected to the first loading plate and a second rolling wheel 21422 provided at the lower end of the rear support rod 21421 and rotatable relative to the rear support rod.

[0104] The first rolling wheel 21412 corresponds to the first front lifting slope and the first rear lifting slope and rolls along the first front lifting slope and the first rear lifting slope.

[0105] The second rolling wheel 21422 is aligned with and rolls along the second front lifting slope and the second rear lifting slope.

[0106] By providing the first front lifting seat and the first rear lifting seat, the loading drive device drives the first front lifting seat and the first rear lifting seat to move up and down, so that the first loading plate can move up and down.

[0107] The first loading seat 21 further includes a first support plate 215 , a buffer support rod 216 and a buffer spring (not shown in the figure).

[0108] in:

[0109] The first support plate 215 is disposed below the first loading plate. The lower ends of the front support rod and the rear support rod pass through the first support plate and can move up and down relative to the first support plate.

[0110] The upper end of the buffer support rod 216 is fixedly connected to the first loading plate, and the lower end passes through the first support plate and can move up and down relative to the first support plate.

[0111] A buffer spring (not shown in the figures) is sleeved on the buffer support rod and clamped between the first support plate and the first loading plate.

[0112] By arranging the buffer support rod and the buffer spring, when the front support rod and the rear support rod move up and down, the first loading plate will slowly rise and fall under the action of the spring, thereby maintaining the stability of the first loading plate.

[0113] The loading device 2 further includes a first guide rail 24 and a second guide rail 25.

[0114] A first guide rail 24 is fixed to the frame. A second guide rail 25 is fixed to the frame and is located directly above the first guide rail. The first support plate is connected to the first guide rail and can move back and forth relative to the first guide rail. The second loading plate is connected to the second guide rail and can move back and forth relative to the second guide rail.

[0115] The feeding drive device 23 includes a feeding drive motor 231 and a feeding drive belt 232 .

[0116] The loading drive belt 232 is connected to the loading drive motor 231, the first support plate, and the second loading plate. Driven by the loading drive motor, the loading drive belt drives the first support plate and the second loading plate to move forward and backward, thereby achieving synchronous reverse movement of the first loading plate and the second loading plate.

[0117] The pad printing head 3 further includes a gantry 34 fixed on the frame, which adopts a gantry structure, has a firm and reliable structure, sufficient space for mechanism movement, and high machine stability.

[0118] The handpiece drive device 33 includes a first handpiece drive device 331, a second handpiece drive device 332 and a third handpiece drive device 333.

[0119] The first head driving device 331 drives the silicone head fixing device to move forward and backward. The second head driving device 332 drives the silicone head fixing device to move left and right. The third head driving device 333 drives the silicone head fixing device to move up and down.

[0120] The first machine head driving device 331 includes a first machine head driving motor 3311, a first driving screw 3312 and a first machine head base 3313.

[0121] The first machine head drive motor 3311 is mounted on the gantry. The first drive screw 3312 is connected to the first machine head drive motor and rotates under the drive of the first machine head drive motor. The first machine head base 3313 is threadedly connected to the first drive screw and moves back and forth under the drive of the first drive screw.

[0122] The second head drive device 332 includes a second head drive motor 3321, a second drive screw 3322 and a second head base 3323.

[0123] The second head drive motor 3321 is mounted on the first head base. The second drive screw 3322 is connected to the second head drive motor and rotates under the drive of the second head drive motor. The second head base 3323 is threadedly connected to the second drive screw and moves left and right under the drive of the second drive screw.

[0124] The third machine head driving device 333 includes a third machine head driving motor 3331, a third driving screw 3332 and a third machine head base 3333.

[0125] The third head drive motor 3331 is mounted on the second head base. The third drive screw 3332 is connected to the third head drive motor and rotates under the drive of the third head drive motor. The third head base 3333 is threadedly connected to the third drive screw and moves up and down under the drive of the third drive screw.

[0126] The silicone head fixing device 32 is fixedly connected to the third headstock.

[0127] By providing a first, second, and third head drive unit, the silicone head can move forward and backward, left and right, and up and down. If the silicone head's installation position deviates, the first, second, and third head drive units can automatically adjust it.

[0128] The silicone head fixing device includes a silicone head fixing seat 321, an equally divided pitch changing module 322, a silicone head seat 323, a first up-down fine-tuning seat 324, a first front-back fine-tuning seat 325 and a first left-right fine-tuning seat 326.

[0129] The rubber head mounting base 321 is fixedly connected to the third machine head base 333. The equally spaced pitch module 322 is fixed to the rubber head mounting base. This equally spaced pitch module adjusts the distance between the silicone rubber heads at equal intervals and can be implemented using an existing equally spaced pitch mechanism. The rubber head bases 323 include multiple, spaced parallel positions on the equally spaced pitch module. These equally spaced pitch modules adjust the distance between adjacent rubber head bases at equal intervals, thereby accommodating the production of products of varying specifications.

[0130] The first vertical fine-tuning seat 324 is connected to the adhesive head seat and can move up and down relative to the adhesive head seat.

[0131] The first front-rear fine-tuning seat 325 is connected to the first up-down fine-tuning seat and can move back and forth relative to the first up-down fine-tuning seat.

[0132] The first left-right fine-tuning seat 326 is connected to the first front-back fine-tuning seat and can move left-right relative to the first front-back fine-tuning seat.

[0133] By setting the first vertical fine-tuning seat, the first front-back fine-tuning seat, and the first left-right fine-tuning seat, the silicone heads can be fine-tuned to ensure that each silicone head is aligned front-to-back, left-to-right, and top-to-bottom. If the silicone heads are not aligned up and down, front-to-back, or left-to-right, they can be aligned up and down, front-to-back, and left-to-right by adjusting the first vertical fine-tuning seat, the first front-to-back fine-tuning seat, and the first left-to-right fine-tuning seat.

[0134] The silicone head 31 is connected to the lower side of the first left and right fine-tuning seat. In this embodiment, the silicone head can be customized to different specifications according to different products.

[0135] The ink unit also includes an oil change plate 45 mounted on one side of the pad printing plate. The oil change plate 45 is detachably connected to the frame. The oil cup 42 is detachably connected to the oil cup drive 43. The oil cup drive drives the oil cup to move above the oil change plate. When the oil cup is removed, the oil cup engages with the oil change plate.

[0136] In this embodiment, the oil cup is magnetically attracted to the oil change cup plate. The oil change cup plate is magnetically connected to the frame. Alternatively, a suction cup can be provided on the frame, with the oil change cup plate attached to the frame via the suction cup. When the oil cup needs to be replaced, the oil cup drive device moves the oil cup above the oil change cup plate. The oil cup and the oil change cup plate are then removed and replaced with another oil cup of a different color and another oil change cup plate. This operation is simple and convenient, and the ink in the oil cup will not leak.

[0137] The oil cup drive device 43 includes an oil cup drive motor 431 and an oil cup drive base 432.

[0138] The oil cup driving motor 431 is fixed on the frame.

[0139] The oil cup drive seat 432 includes an oil cup drive base 4321 connected to the oil cup drive motor 431 and moving left and right under the drive of the oil cup drive motor, and an oil cup fixing rod 4322 provided above the oil cup drive base.

[0140] In this specific embodiment, the oil cup drive device further includes an oil cup drive belt 433. The oil cup drive belt 433 is connected to the oil cup drive motor 431 and the oil cup drive base 4321. The oil cup drive base includes two opposing oil cup drive side plates 4323, one on the front and one on the back. Each of the oil cup drive side plates 4323 is provided with a fixing rod adjustment slot 4324. The front and rear ends of the oil cup fixing rod 4322 are fixed to the oil cup drive side plates 4323 via fixing rod screws passing through the fixing rod adjustment slot 4324.

[0141] In order to better position the oil cup, in this specific embodiment, a recessed oil cup positioning groove 4325 is provided on the lower side of the oil cup fixing rod, and one side of the oil cup body is positioned in the oil cup positioning groove 4325.

[0142] The ink cup drive device moves the ink cup along the pad printing plate from left to right or right to left once to complete the ink application. Compared to previous ink cups that required a full round trip to complete the ink application, the number of frictions between the ink cup and the pad printing plate is reduced by half, thereby improving processing efficiency and extending the service life of the ink device.

[0143] The oil cup 42 includes an oil cup seat 421, an oil cup body 422 and an oil cup positioning block 423.

[0144] The oil cup seat 421 is detachably connected to the oil cup fixing rod. In this specific embodiment, the oil cup seat and the oil cup fixing rod are connected by screws. The oil cup seat is provided with an oil cup hole 4211.

[0145] The upper end of the oil cup body 422 passes through the oil cup hole and is positioned in the oil cup hole.

[0146] The oil cup positioning blocks 423 include two, one on each side of the oil cup body, and the oil cup body is clamped and positioned between the two oil cup positioning blocks. The oil cup positioning blocks can position the front and back sides of the oil cup body to prevent the oil cup from shaking.

[0147] In this embodiment, the oil cup body includes an upper oil cup body 4221 and a lower oil cup body 4222. The upper oil cup body 4221 is cylindrical and passes through the oil cup hole 4211 and is positioned therein. The lower oil cup body 4222 is cylindrical, with the right side of the lower oil cup body positioned in the oil cup positioning groove and the left side of the lower oil cup body positioned between the two oil cup positioning blocks.

[0148] The ink device further includes a support plate 46. The support plate 46 is fixed on the frame, and the pad printing steel plate is fixed on the support plate.

[0149] The ink removal device 44 includes a tape reel motor 441, a first tape reel 442, a second tape reel 443 and a tape positioning roller 444.

[0150] A tape reel motor 441 is fixed to the frame. A first tape reel 442 is connected to the motor and rotates under its drive. A second tape reel 443 is mounted on the frame and can rotate relative to the frame. The first and second tape reels are positioned opposite each other, one on each side of the frame.

[0151] Tape positioning rollers 444 are mounted on the support plate, with a tape gap defined between the rollers and the upper surface of the support plate for the tape to pass through. In this embodiment, three tape positioning rollers 444 are provided to position the tape and prevent it from shifting under the influence of the silicone head during ink removal.

[0152] By providing a first tape reel and a second tape reel, each time ink is removed, the tape reel motor drives the first tape reel to rotate, winding the used tape onto the first tape reel. Simultaneously, it drives the second tape reel to rotate, placing new tape between the first and second tape reels. This enables automatic tape replacement, resulting in cleaner ink removal.

[0153] The drying device 6 includes a drying drive motor 61, a drying rack 62, a hot air generator 63 and an air nozzle 64.

[0154] The drying drive motor 61 is fixed to the frame. The drying frame 62 is connected to the drying drive motor and is driven by the drying drive motor to move back and forth. A hot air generator 63 is fixed to the drying frame. The hot air generator is used to generate hot air to dry the ink pad-printed on the product. Multiple air nozzles 64 are evenly distributed on the drying frame and connected to the hot air generator 63 via air pipes. Each air nozzle corresponds to each silicone head. The hot air generated by the hot air generator is blown out of the air nozzle through the air pipe onto the product surface, thereby drying the ink pad-printed on the product. In this specific embodiment, the number of air nozzles is the same as the number of silicone heads, and they correspond one-to-one with each silicone head. Therefore, each air nozzle dries the ink pad-printed on each silicone head, achieving a more effective drying effect. Furthermore, driven by the drying drive motor, the air nozzles can move back and forth along the drying frame, achieving faster drying and better results.

[0155] The working principle of the present invention is as follows: Initially, the product to be pad-printed is placed on the first loading station. The roller device is activated, and the roller drive device drives the rollers to remove dust from the product to be pad-printed. This also serves to level the product. The first loading station is then transported to the pad-printing station, thereby conveying the product to the pad-printing station. Simultaneously, the ink cup drive device is activated to move the ink cup to the other side of the pad-printing plate, completing the application of ink to the pad-printing plate. The head drive device then drives the silicone head to remove ink, and the pattern or text is pad-printed onto the product to be pad-printed, completing the pad-printing process. After the product is pad-printed, the head drive device drives the silicone head to the ink removal device to remove any remaining ink. Simultaneously, the drying device is activated to dry the product to be pad-printed. For the second pad-printing operation, the ink cup moves in the opposite direction and stops at its starting position. While the product on the first loading station is being pad printed, a new product to be pad printed can be placed on the second loading station. After the product on the first loading station is pad printed, the second loading station moves to the pad printing station, and the first loading station moves to the loading station to begin pad printing the product on the second loading station. The first loading station is then unloaded and loaded. This cycle is repeated, allowing for simultaneous pad printing and loading. When the ink needs to be changed, the oil cup drive device drives the oil cup to move above the oil cup change plate, where it is removed along with the oil cup and oil cup change plate, and then replaced with a new ink cup of a different color.

[0156] The present invention has the following advantages:

[0157] 1. High degree of automation, it can unload and load materials, automatically remove dust, automatically pad print, automatically dry and automatically remove ink during pad printing, thus high work efficiency;

[0158] 2. The use of long pad printing steel sheets can provide more silicone heads to take ink, thereby increasing product output;

[0159] 3. It is very convenient and easy to replace the oil cup and tape, and the ink in the oil cup will not leak;

[0160] 4. The gantry structure is firm, reliable and highly stable;

[0161] 5. It can print a variety of products of different models and specifications, with a wide range of applications.

[0162] The above description is only a preferred embodiment of the present invention and is 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 scope of protection of the present invention.

Claims

1. A pad printing machine comprising a frame, a loading device disposed on the frame, a pad printing head disposed on the frame, and an ink device disposed on the frame, characterized in that: The loading device includes a first loading seat, a second loading seat and a loading drive device for driving the first loading seat and the second loading seat to switch back and forth between the loading station and the pad printing station; The pad printing head includes a silicone head, a silicone head fixing device connected to the silicone head, and a head driving device that drives the silicone head fixing device to move between the ink device and the feeding device; The ink device includes a pad printing steel plate, an oil cup provided above the pad printing steel plate, an oil cup driving device for driving the oil cup to move along the upper surface of the pad printing steel plate, and an ink removal device provided between the pad printing steel plate and the pad printing station; The pad printing machine also includes: A roller device is provided on one side of the feeding device, the roller device comprising a dust removal roller and a roller driving device for driving the dust removal roller to roll along the upper surface of the first feeding seat or the second feeding seat at the feeding station; A drying device is provided on one side of the pad printing station, and blows hot air onto the first loading seat or the second loading seat located at the pad printing station; The feeding device also includes: a first front lifting seat, which is fixed on the frame; a first rear lifting seat fixed to the frame, facing the first front lifting seat and located behind the first front lifting seat; The first loading seat includes: a first loading plate, wherein the first front lifting seat is located below the first loading plate; a loading plate support frame, which is fixed below the first loading plate and can move along the first front lifting seat and the first rear lifting seat; The second loading seat includes a second loading plate; When the first loading plate is located at the loading station and the pad printing station, the loading plate support frame is supported on the first front lifting seat and the first rear lifting seat respectively, and the first loading plate and the second loading plate are located at the same height; The loading drive device drives the first loading plate and the second loading plate to move synchronously in opposite directions, and the first loading plate first moves downward to the bottom of the second loading plate during the movement, is offset from the second loading plate, and then moves upward to the same height as the second loading plate; The first front lifting seat includes: a first front horizontal surface, which is provided on the front upper surface of the first front lifting seat; a first front lifting inclined surface, which is provided at the rear end of the first front lifting seat and is inclined from the rear end of the first front horizontal surface toward the rear and downward; a second front lifting inclined surface, which is provided on one side of the first front lifting inclined surface and is inclined rearward and downward from the rear end of the first front horizontal surface; The first rear lifting seat comprises: a first rear horizontal surface, which is provided on the upper surface of the rear end of the first rear lifting seat; a first rear lifting inclined surface, which is provided at the front end of the first rear lifting seat and is inclined from the front end of the first rear horizontal surface toward the front and bottom; a second rear lifting inclined surface, which is provided on one side of the first rear lifting inclined surface and is inclined from the front end of the first rear horizontal surface toward the front and bottom; When the first loading plate is located at the loading station and the pad printing station, the loading plate support frame is supported on the first front horizontal plane and the first rear horizontal plane respectively; The loading plate support frame includes: A front loading plate support frame, comprising a front support rod with an upper end fixedly connected to the first loading plate and a first rolling wheel provided at a lower end of the front support rod and rotatable relative to the front support rod; A rear loading plate support frame, comprising a rear support rod with an upper end fixedly connected to the first loading plate and a second rolling wheel provided at a lower end of the rear support rod and rotatable relative to the rear support rod; The first rolling wheel corresponds to the first front lifting slope and the first rear lifting slope and rolls along the first front lifting slope and the first rear lifting slope; The second rolling wheel rolls with the second front lifting slope and the second rear lifting slope and along the second front lifting slope.

2. The pad printing machine according to claim 1, characterized in that: The first loading seat also includes: a first support plate, which is arranged below the first loading plate; the lower ends of the front support rod and the rear support rod pass through the first support plate and can move up and down relative to the first support plate; a buffer support rod, the upper end of which is fixedly connected to the first loading plate, and the lower end of which passes through the first support plate and can move up and down relative to the first support plate; a buffer spring, which is sleeved on the buffer support rod and clamped between the first support plate and the first loading plate; The feeding device also includes: a first guide rail fixed to the frame; a second guide rail fixed to the frame and located directly above the first guide rail; The first support plate is connected to the first guide rail and can move forward and backward relative to the first guide rail; The second loading plate is connected to the second guide rail and can move forward and backward relative to the second guide rail; The feeding drive device comprises: Feeding drive motor; The feeding drive belt is connected to the feeding drive motor, the first support plate and the second feeding plate, and the feeding drive belt drives the first support plate and the second feeding plate to move back and forth under the drive of the feeding drive motor.

3. The pad printing machine according to claim 1, characterized in that: The pad printing head further includes a gantry fixed to the frame; The head drive device comprises: A first head driving device, which drives the silicone head fixing device to move back and forth; A second head driving device drives the silicone head fixing device to move left and right; A third machine head driving device, which drives the silicone head fixing device to move up and down; The first head driving device comprises: A first machine head drive motor, which is arranged on the gantry; a first driving screw, connected to the first handpiece driving motor and driven to rotate by the first handpiece driving motor; a first headstock, which is threadedly connected to the first drive screw and moves back and forth under the drive of the first drive screw; The second head driving device includes: a second head drive motor, which is arranged on the first head base; a second driving screw, connected to the second head driving motor and driven to rotate by the second head driving motor; a second headstock, which is threadedly connected to the second drive screw and moves left and right under the drive of the second drive screw; The third head driving device comprises: a third head drive motor, which is provided on the second head base; a third drive screw, connected to the third handpiece drive motor and driven to rotate by the third handpiece drive motor; a third headstock, which is threadedly connected to the third drive screw and moves up and down under the drive of the third drive screw; The silicone head fixing device is fixedly connected to the third headstock.

4. The pad printing machine according to claim 3, characterized in that: The silicone head fixing device comprises: A rubber head fixing seat, which is fixedly connected to the third head seat; An equally divided pitch-changing module, which is fixed on the rubber head fixing seat; The rubber head seats include a plurality of rubber head seats, which are arranged in parallel and at intervals on the equally divided distance-changing modules, and the equally divided distance-changing modules adjust the distance between adjacent rubber head seats at equal intervals; A first vertical fine-tuning seat, which is connected to the adhesive head seat and can move up and down relative to the adhesive head seat; a first front-to-back fine-tuning seat, connected to the first up-to-down fine-tuning seat and capable of moving back and forth relative to the first up-to-down fine-tuning seat; a first left-right fine-tuning seat connected to the first front-back fine-tuning seat and movable left-right relative to the first front-back fine-tuning seat; The silicone head is connected to the lower side of the first left and right fine-tuning seat.

5. The pad printing machine according to claim 1, wherein: The ink device also includes an oil change cup plate provided on one side of the pad printing steel plate, the oil change cup plate is detachably connected to the frame; the oil cup is detachably connected to the oil cup drive device; the oil cup drive device drives the oil cup to move above the oil change cup plate, and the oil cup is removed, and the oil cup is attracted to the oil change cup plate.

6. The pad printing machine according to claim 5, characterized in that: The oil cup driving device comprises: An oil cup driving motor, which is fixed on the frame; An oil cup drive seat, comprising an oil cup drive base connected to the oil cup drive motor and moving left and right under the drive of the oil cup drive motor, and an oil cup fixing rod provided above the oil cup drive base; The oil cup comprises: An oil cup seat is detachably connected to the oil cup fixing rod; an oil cup hole is provided on the oil cup seat; An oil cup body, the upper end of which passes through the oil cup hole and is positioned in the oil cup hole; The oil cup positioning blocks include two blocks, which are respectively arranged at the front and rear sides of the oil cup body, and the oil cup body is clamped and positioned between the two oil cup positioning blocks.

7. The pad printing machine according to claim 6, characterized in that: The ink device also includes: A support plate, which is fixed on the frame, and the pad printing steel plate is fixed on the support plate; The ink removal device comprises: A tape reel motor, which is fixed on the frame; a first tape reel connected to the tape reel motor and driven to rotate by the tape reel motor; a second tape reel, which is disposed on the frame and can rotate relative to the frame; the first tape reel and the second tape reel are disposed opposite each other and are respectively disposed on the left and right sides of the frame; The adhesive tape positioning roller is arranged on the support plate, and an adhesive tape gap for the adhesive tape to pass through is provided between the adhesive tape positioning roller and the upper surface of the support plate.

8. The pad printing machine according to claim 1, wherein: The drying device comprises: a blow-drying drive motor, which is fixed on the frame; a drying rack connected to the drying drive motor and moving back and forth under the drive of the drying drive motor; a hot air generator fixed on the drying rack; The air nozzles include a plurality of air nozzles evenly distributed on the drying rack, and the air nozzles are connected to the hot air generator through an air pipe; the air nozzles correspond to the silicone heads one by one.

Images