A multi-station hot stamping machine

Abstract

The application discloses a multi-station stamping machine, which comprises a rack, a feeding mechanism, a discharging mechanism, a stamping structure and a rotating disc structure; the feeding mechanism is arranged on the feeding end of the rack, and the discharging mechanism is arranged on the discharging end of the rack; the stamping structure and the rotating disc structure are fixed in the rack; the stamping structure comprises a stamping head; the rotating disc structure is arranged between the feeding mechanism, the discharging mechanism and the stamping structure; the rotating disc structure forms a feeding station near the feeding mechanism, forms a stamping station near the stamping structure and forms a discharging station near the discharging mechanism; the rotating disc structure comprises a rotating platform, a taper adjusting mechanism and a first driving assembly; the rotating platform is rotationally connected to the rack; the taper adjusting mechanism is installed on the rotating platform; the rotating platform is rotationally driven by the first driving assembly; and the printing workpiece fixed to the taper adjusting mechanism is switched among the feeding station, the stamping station and the discharging station. The application can improve the production efficiency and meet the higher quality stamping requirement.

Description

Technical Field

[0001] This invention relates to the field of hot stamping printing equipment technology, and more particularly to a multi-station hot stamping machine. Background Technology

[0002] A hot stamping machine, also known as a heat transfer machine, is a machine used to print images, text, or patterns onto various types of surfaces, including irregularly shaped, square, oval, round, and tapered bottles, etc. The working principle of a hot stamping machine is to transfer ink or pigment from a special transfer paper to the target surface through heat conduction.

[0003] Current hot stamping machines used in automated production lines mostly employ conveyor belts to transport the workpieces. While this method provides the functions of fixing the workpieces and switching workstations, it occupies a large space and is not conducive to improving productivity. Secondly, the taper adjustment mechanism of current hot stamping machines is cumbersome to operate and has poor stability, making it difficult to adapt to hot stamping scenarios with high pressure. Furthermore, the stamping surface of existing hot stamping machines cannot swing, making it difficult to meet the needs of multi-angle hot stamping. Therefore, although current hot stamping machines can meet basic production needs, they still suffer from excessive costs and low production capacity for some work scenarios that require high customization and high quality. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a multi-station hot stamping machine that uses a rotary multi-station system to transport and process the workpiece, thereby improving production efficiency. At the same time, it can adjust the taper of the workpiece surface and the swing angle of the hot stamping head to meet the requirements of higher quality transfer printing.

[0005] The present invention provides a multi-station hot stamping machine, including a frame, a feeding mechanism, a discharging mechanism, a hot stamping structure, and a turntable structure;

[0006] The frame has a mounting chamber, with a loading end and a unloading end formed at both ends of the mounting chamber; the feeding mechanism is located at the loading end and is used to transport the printed workpiece to the turntable structure; the unloading mechanism is located at the unloading end and is used to receive and transport the printed workpiece away from the turntable structure; the hot stamping structure and the turntable structure are fixed in the mounting chamber.

[0007] The hot stamping structure includes a hot stamping head, which is used to perform heat transfer on the workpiece; the turntable structure is disposed between the feeding mechanism, the discharging mechanism and the hot stamping structure; the turntable structure forms a loading station near the feeding mechanism, a hot stamping station near the hot stamping structure and a unloading station near the discharging mechanism.

[0008] The turntable structure includes a rotating platform, a taper adjustment mechanism, and a first drive assembly. The rotating platform is rotatably connected to the frame, and the connection forms a first rotating shaft. The rotating platform is provided with mounting positions corresponding to the loading station, hot stamping station, and unloading station, and each mounting position is equipped with a taper adjustment mechanism for fixing and adjusting the taper of the workpiece. The first drive assembly provides power to drive the rotating platform to rotate, so that the taper adjustment mechanisms at each mounting position can switch the workpiece between the loading station, hot stamping station, and unloading station.

[0009] In a preferred embodiment, the rotating platform includes a wheel, with a first side and a second side formed on both sides of the wheel. The wheel is positioned with its inner side closer to the first rotation axis and its outer side further away from the first rotation axis. A mounting position is disposed on the wheel. The mounting position includes a mounting hole, a first mounting member, and a second mounting member. The mounting hole is a through hole. The first mounting member is disposed on the first side, and the second mounting member is disposed on the second side.

[0010] The taper adjustment mechanism includes a support assembly, a tooling fixture, and an adjustment assembly. The support assembly includes a base that passes through the mounting hole. A first support seat is provided on the outer side of the base near the first side, and a mounting shaft is formed on the first support seat, which is hinged to the first mounting member. The tooling fixture is disposed on the first support seat for fixing the workpiece. The adjustment assembly is disposed on the side of the base near the first rotation axis. The adjustment assembly includes a second driving member and a mounting seat. The mounting seat is slidably connected to the base. The second driving member drives the mounting seat to translate relative to the base, thereby causing the workpiece to rotate around the mounting shaft under the drive of the first support seat.

[0011] In a preferred embodiment, the support assembly further includes a second support base; the first support base and the second support base are disposed at opposite ends of the base, such that the first support base is disposed close to the first side and the second support base is disposed close to the outer side of the second side.

[0012] The tooling fixture includes a first tooling component and a second tooling component. The first tooling component is fixed to the first support base, and the second tooling component is fixed to the second support base. The first tooling component and the second tooling component clamp and fix the workpiece.

[0013] In a preferred embodiment, the rotating platform further includes a linkage assembly, which includes a support shaft, a sleeve, and a linkage member. The support shaft is coaxially arranged with the wheel. The sleeve is fitted onto the support shaft and can slide axially relative to the support shaft. One end of the linkage member is connected to the sleeve, and the other end is fixed to the mounting base.

[0014] As a preferred embodiment, the hot stamping structure includes a vertical adjustment module, a first horizontal adjustment module, a longitudinal adjustment module, an oscillation adjustment module, and a hot stamping head;

[0015] The vertical adjustment module has a mounting plate for mounting the hot stamping structure onto the frame of the hot stamping machine; the vertical adjustment module has a vertically movable end.

[0016] The first horizontal adjustment module is connected to the movable end of the vertical adjustment module; the first horizontal adjustment module has a movable end for horizontal movement;

[0017] The longitudinal adjustment module is connected to the movable end of the first lateral adjustment module, and the longitudinal adjustment module has a movable end that moves longitudinally.

[0018] The swing adjustment module is connected to the moving end of the longitudinal adjustment module, and the swing adjustment module has a rotating end that rotates about the transverse axis.

[0019] The hot stamping head is used to perform heat transfer on the workpiece. The hot stamping head is connected to the rotating end of the swing adjustment module. The hot stamping head is adjusted in the vertical, horizontal, longitudinal, and rotational directions with the horizontal axis by the vertical adjustment module, the first horizontal adjustment module, the longitudinal adjustment module and the swing adjustment module.

[0020] In a preferred embodiment, the swing adjustment module includes a first adjustment plate and a second adjustment plate, wherein the first adjustment plate is connected to the moving end of the longitudinal adjustment module, and the second adjustment plate is connected to the hot stamping head;

[0021] The first adjusting plate is hinged to the second adjusting plate, and the hinge point forms a second rotating shaft. The second rotating shaft is arranged laterally, so that the hot stamping head can rotate relative to the longitudinal adjusting module around the second rotating shaft under the drive of the second adjusting plate, thereby realizing the adjustment of the hot stamping structure in the lateral rotation direction.

[0022] In a preferred embodiment, the vertical adjustment module includes a first driving member, a first lead screw, and a first slider; the two ends of the first lead screw are rotatably connected to the mounting plate via connectors, and the first lead screw is vertically positioned; the first slider is screwed to the first lead screw; the first driving member drives the first lead screw to rotate, thereby causing the first slider to move vertically;

[0023] The vertical adjustment module also includes a top plate, which is fixed to the top of the mounting plate; an elastic element is provided between the first slider and the top plate, and the elastic element applies an upward elastic force to the first slider.

[0024] As a preferred embodiment, it also includes a feeding and rewinding tensioning mechanism for tensioning, conveying and retrieving electroplated aluminum foil;

[0025] The winding tensioning mechanism is connected to the rotating end of the swing adjustment module, thereby allowing the winding tensioning mechanism to move synchronously with the hot stamping head.

[0026] It also includes a photoelectric adjustment device, which is located near the hot stamping head. The photoelectric adjustment device is used to acquire and identify the bottom features of the workpiece to be printed, generate position adjustment information from the identified information, and adjust the position of the hot stamping head according to the position adjustment information.

[0027] In a preferred embodiment, the feeding mechanism includes a feeding conveyor belt, a pre-positioning device, and a loading robot; the pre-positioning device and the loading robot are disposed at the loading station;

[0028] The pre-positioning device includes a first positioning component and a second positioning component; the first positioning component includes a first telescopic rod, the movable end of which is connected to a first positioning plate; the second positioning component includes a second telescopic rod, the movable end of which is connected to a second positioning plate; the first positioning plate and the second positioning plate are arranged opposite to each other, and a positioning gap for clamping the printing workpiece is formed between the first positioning plate and the second positioning plate.

[0029] In a preferred embodiment, the loading robot includes a rotating component, a first clamping component, and a second clamping component; the rotating component is mounted on the loading station and has a rotating shaft; the first clamping component and the second clamping component are fixed at an angle to the circumference of the rotating shaft of the rotating component; the rotating component drives the first clamping component to transport the printing workpiece on the feeding conveyor belt to the positioning gap for pre-positioning, while the second clamping component transports the pre-positioned printing workpiece in the positioning gap to the turntable structure.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] This invention relates to a multi-station hot stamping machine. A feeding mechanism transports the workpiece to a turntable structure, where a hot stamping mechanism transfers the stamped workpiece onto the turntable. A discharging mechanism then removes the stamped workpiece from the turntable, completing the process. A rotating platform on the turntable fixes the workpiece and allows for station switching. Power from the first drive component drives the rotating platform, which in turn rotates the taper adjustment mechanism by one unit angle. The taper adjustment mechanisms at each mounting position allow the workpiece to switch between the loading, hot stamping, and unloading stations. This design combines the advantages of both conveyor lines and turntable lines, improving space utilization and production efficiency. It features high-precision positioning to ensure the workpiece stays in the required position and allows for precise switching between different stations, further enhancing production efficiency. The taper adjustment mechanism automatically adjusts the workpiece surface, ensuring accurate angle between the hot stamping head and the workpiece surface, thus meeting higher quality transfer requirements. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the multi-station hot stamping machine of the present invention;

[0033] Figure 2 This is a schematic diagram of the internal structure of the multi-station hot stamping machine of the present invention;

[0034] Figure 3 This is a front view of the internal structure of the multi-station hot stamping machine of the present invention;

[0035] Figure 4 This is a schematic diagram of the pre-positioning device of the multi-station hot stamping machine of the present invention;

[0036] Figure 5 This is a schematic diagram of the loading robot of the multi-station hot stamping machine of the present invention;

[0037] Figure 6 This is a schematic diagram of the rotary table structure of the multi-station hot stamping machine of the present invention;

[0038] Figure 7 This is a front view of the turntable structure of the multi-station hot stamping machine of the present invention;

[0039] Figure 8 This is a top view of the rotary table structure of the multi-station hot stamping machine of the present invention;

[0040] Figure 9 This is a schematic diagram of the tapered adjustment mechanism of the multi-station hot stamping machine of the present invention;

[0041] Figure 10 This is a schematic diagram of the hot stamping structure of the multi-station hot stamping machine of the present invention;

[0042] Figure 11 This is a partial structural diagram of the hot stamping structure of the multi-station hot stamping machine of the present invention;

[0043] Figure 12 This is a schematic diagram showing the connection relationship between the hot stamping head and the feeding and rewinding tensioning mechanism of the hot stamping structure of the multi-station hot stamping machine of the present invention.

[0044] Figure 13 This is a schematic diagram of the connecting frame of the hot stamping structure of the multi-station hot stamping machine of the present invention.

[0045] In the diagram: 100, frame; 200, feeding mechanism; 210, loading station; 220, feeding conveyor belt; 230, pre-positioning device; 231, first positioning component; 232, second positioning component; 240, loading robot; 241, rotating component; 242, first clamping component; 243, second clamping component; 300, unloading mechanism; 310, unloading station; 320, unloading conveyor belt; 330, unloading robot; 400, hot stamping structure; 410, hot stamping station; 420, vertical adjustment module; 422, first lead screw; 423, first slider; 424, top plate; 425, elastic element; 430, first horizontal adjustment module; 440, vertical adjustment module; 4411, third adjustment plate; 450, swing adjustment module; 451, first adjustment plate; 4511, second rotating shaft; 452, second adjustment... Section plate; 460, hot stamping head; 461, fifth adjusting plate; 462, heating cover; 465, third drive device; 470, feeding and rewinding tensioning mechanism; 480, photoelectric adjustment device; 490, second lateral adjustment module; 500, turntable structure; 511, wheel; 5111, first rotating shaft; 512, mounting position; 5121, mounting hole; 5122, first mounting component; 5123, second mounting component; 5131, support shaft; 5132, sleeve; 520, taper adjustment mechanism; 521, support assembly; 5211, first support seat; 5212, mounting shaft part; 5213, second support seat; 522, tooling fixture; 5221, first tooling assembly; 5222, second tooling assembly; 523, adjusting assembly; 5231, second drive component; 5232, mounting seat; 530, first drive assembly. Detailed Implementation

[0046] The invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0047] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0050] like Figure 1-13 As shown, this embodiment provides a multi-station hot stamping machine, including a frame 100, a feeding mechanism 200, a discharging mechanism 300, a hot stamping structure 400, and a turntable structure 500.

[0051] The frame 100 has an installation chamber, which mainly serves as a support, connection, and protection unit. The installation chamber has a loading end and a unloading end at its two ends. The feeding mechanism 200 is located at the loading end and is used to transport the workpiece to the turntable structure 500. The unloading mechanism 300 is located at the unloading end and is used to receive and remove the workpiece from the turntable structure 500. The hot stamping structure 400 is fixed to the turntable structure 500 within the installation chamber. The workpiece is transported to the turntable structure 500 by the feeding mechanism 200, where the hot stamping structure 400 performs a transfer operation on the workpiece. The unloading mechanism 300 then removes the transferred workpiece from the turntable structure 500, completing the process.

[0052] In this embodiment, the hot stamping structure 400 includes a hot stamping head 460 for heat transfer of the workpiece, the hot stamping head 460 being positioned above the turntable structure 500 in the direction of gravity; the turntable structure 500 is positioned between the feeding mechanism 200, the discharging mechanism 300, and the hot stamping structure 400; the turntable structure 500 forms a loading station 210 near the feeding mechanism 200, a hot stamping station 410 near the hot stamping structure 400, and a unloading station 310 near the discharging mechanism 300.

[0053] The turntable structure 500 includes a rotating platform, a taper adjustment mechanism 520, and a first drive assembly 530. The rotating platform is rotatably connected to the frame 100, and the connection forms a first rotating shaft 5111. The rotating platform is provided with mounting positions 512 corresponding to the loading station 210, the hot stamping station 410, and the unloading station 310, respectively. A corresponding number of taper adjustment mechanisms 520 are installed on the mounting positions 512. The taper adjustment mechanisms 520 are mainly used for fixing and taper adjustment of the printed workpiece. The three mounting positions 512 are evenly distributed on the rotating platform with a rotation angle of 120°, so that the rotating platform can complete the switching of the printed workpiece between the loading station 210, the hot stamping station 410, and the unloading station 310 every 120° rotation.

[0054] In this embodiment, the turntable structure 500 uses a rotating platform to fix the workpiece and switch workstations. The first drive component 530 provides power to drive the rotating platform to rotate, thereby rotating the taper adjustment mechanism 520 by one unit angle (the unit angle in this embodiment is set to 120°). This allows the taper adjustment mechanism 520 on each mounting position 512 to switch the workpiece between the loading station 210, the hot stamping station 410, and the unloading station 310. It combines the advantages of both a conveyor assembly line and a turntable structure 500 assembly line, improving space utilization and production efficiency. It has a high-precision positioning function to ensure that the workpiece stays in the required position and can accurately switch between different workstations, while also achieving automatic adjustment of the workpiece surface.

[0055] Specifically, the rotating platform in this embodiment includes a wheel 511, with a first side and a second side formed on both sides of the wheel 511. The direction of the wheel 511 closer to the first rotation axis 5111 is the inner side, and the direction away from the first rotation axis 5111 is the outer side.

[0056] The mounting position 512 is disposed on the wheel 511; the mounting position 512 includes a mounting hole 5121, a first mounting member 5122 and a second mounting member 5123; the mounting hole 5121 is a through hole, the first mounting member 5122 is disposed on a first side and is disposed near the outer edge of the mounting hole 5121; the second mounting member 5123 is disposed on a second side and is disposed near the inner edge of the mounting hole 5121.

[0057] refer to Figure 6 As shown, the taper adjustment mechanism 520 of this embodiment includes a support component 521, a tooling fixture 522 and an adjustment component 523; the support component 521 includes a base, which passes through the mounting hole 5121, so that both ends of the base pass through the first side and the second side of the mounting hole 5121 respectively.

[0058] A first support seat 5211 is provided on the outer side of the base near the first side. A mounting shaft portion 5212 is formed on the first support seat 5211. The mounting shaft portion 5212 is hinged to the first mounting member 5122, thereby allowing the taper adjustment mechanism 520 to rotate relative to the rotating platform. The tooling fixture 522 is provided on the first support seat 5211 for fixing the workpiece to be printed. The adjustment component 523 is provided on the side of the base near the first rotating shaft 5111. The adjustment component 523 includes a second driving member 5231 and a mounting seat 5232. The second driving member 5231 is an absolute value motor. The mounting seat 5232 is slidably connected to the base, thereby allowing the mounting seat 5232 to translate relative to the base in its length direction. The second driving member 5231 drives the mounting seat 5232 to translate relative to the base, thereby causing the workpiece to rotate around the mounting shaft portion 5212 under the drive of the first support seat 5211, thereby adjusting the working taper of the workpiece.

[0059] In this embodiment, the taper adjustment mechanism 520 is installed through the wheel 511. The two ends of the taper adjustment mechanism 520 are located on opposite sides of the wheel 511. Specifically, the first mounting part 5122 is connected to the mounting shaft 5212, and the second mounting part 5123 is connected to the mounting base 5232. This provides a more balanced and stable support for the taper adjustment mechanism 520, making it more adaptable to hot stamping printing tasks with greater force, while improving printing quality. Secondly, the second drive component 5231 in this embodiment uses an absolute motor. The absolute motor can accurately measure and report its own rotational position, achieving more precise angle control and adjustment. By storing and restoring specific taper settings through the absolute motor, it is possible to quickly switch between different printing tasks. There is no need to readjust the taper when switching tasks or starting / closing, avoiding errors and time wasted by manual settings, improving production efficiency and consistency between different printing tasks and batches, and is more conducive to highly customized and fine-tuned applications.

[0060] In this embodiment, the number of mounting positions 512 on the wheel 511 is 3. In other embodiments, more than three positions can be set according to actual processing needs, such as 4 positions spaced at 90° intervals, 6 positions spaced at 60° intervals, etc., depending on the actual situation. Furthermore, the wheel 511 is provided with multiple expansion holes, which are located between two adjacent mounting positions 512. One function of setting expansion holes is to reduce the overall weight of the wheel 511 while ensuring sufficient support strength, thereby reducing the load on the equipment during operation, improving the kinetic energy conversion rate, and saving energy and protecting the environment. Another function is that the expansion holes can be used to install other auxiliary function worktables to provide more complete functions, which is beneficial for processing different types of workpieces and adapting to the production line, making it more practical.

[0061] The rotating platform further includes a linkage assembly, which includes a support shaft 5131, a sleeve 5132, and a linkage member. The support shaft 5131 is coaxially arranged with the first rotating shaft 5111. The sleeve 5132 is sleeved on the support shaft 5131 and can slide axially relative to the support shaft 5131. One end of the linkage member is connected to the sleeve 5132, and the other end is fixed to the mounting base 5232. The linkage member can be a long rod or a slip ring.

[0062] The rotating platform is fixed by a support shaft 5131 coaxially arranged with the rotating platform 511, thereby improving the stability and positioning accuracy of the rotating platform. The sleeve 5132, which is slidably connected to the support shaft 5131, is fixed to the mounting seat 5232 of each taper adjustment mechanism 520 on the rotating platform through a linkage component. This allows the mounting seats 5232 on different mounting positions 512 to move synchronously relative to the base, thereby achieving synchronous adjustment of the taper of the workpiece surface by each taper adjustment mechanism 520 on the rotating platform 511.

[0063] The base support assembly 521 also includes a second support 5213; the first support 5211 and the second support 5213 are disposed at opposite ends of the base, that is, the first support 5211 and the second support 5213 are respectively disposed on both sides of the wheel 511, the first support 5211 is disposed close to the first side, and the second support 5213 is disposed close to the outer side of the second side.

[0064] The tooling fixture 522 includes a first tooling assembly 5221 and a second tooling assembly 5222. The first tooling assembly 5221 is fixed to the first support base 5211, and the second tooling assembly 5222 is fixed to the second support base 5213. The first tooling assembly 5221 and the second tooling assembly 5222 clamp and fix the workpiece.

[0065] In this embodiment, the first tooling assembly 5221 includes a rotary motor, a transmission rod, and a first positioning component. The rotary motor is fixed to the first support base 5211 via a connecting plate and has an output shaft. One end of the transmission rod is connected to the output shaft of the rotary motor via a coupling, and the other end is connected to the first positioning component. The first positioning component is used to fix the workpiece, and the side of the first positioning component connected to the workpiece can be provided with a matching connecting surface. The connecting surface cooperates with the workpiece to prevent the workpiece from shifting or rotating during the printing process. By setting the rotary motor to drive the workpiece to be processed to actively rotate, compared with the current passive rotation processing method, the printing quality and productivity are greatly improved.

[0066] The second tooling assembly 5222 includes a telescopic member and a second positioning member. The telescopic member has a telescopic rod, the end of which is connected to the second positioning member. The telescopic member can be implemented using a pneumatic or hydraulic cylinder, and those skilled in the art can implement it according to the required clamping force. The telescopic rod and the transmission rod are coaxially arranged, so that the interaction force between the telescopic rod and the transmission rod acts directly on the workpiece, avoiding the formation of a rotating pair due to the deviation of the force point. By having the telescopic member move the second positioning member closer to or away from the first tooling assembly 5221, the workpiece is clamped or released between the first positioning member and the second positioning member. The side of the second positioning member that connects to the workpiece may also be provided with a matching connecting surface, such as a hole-shaft mating connection, to improve the connection stability of the workpiece.

[0067] An adjusting plate and bolt are provided at the connection between the second tooling assembly 5222 and the second support base 5213. The adjusting plate has an adjusting hole, which is a long groove. The bolt passes through the adjusting hole to lock the adjusting plate to the second support base 5213. By adjusting and locking the relative position of the second tooling assembly 5222 on the second support base 5213 using the adjusting plate, the clamping distance between the first tooling assembly 5221 and the second tooling assembly 5222 for the workpiece is adjusted. This expands the adaptability of the taper adjustment mechanism 520 to the size of the workpiece to be processed, meets the processing requirements of a larger workpiece size fluctuation range, and improves practicality.

[0068] The support assembly 521 also includes a reinforcing rod, one end of which is fixed to the first support base 5211 and the other end to the second support base 5213; the reinforcing rod is positioned close to the tooling fixture 522. By setting the reinforcing rod to fix and support the free ends of the first support base 5211 and the second support base 5213, the force generated during the clamping of the workpiece by the first tooling assembly 5221 and the second tooling assembly 5222 is applied to the reinforcing rod, thereby enhancing the stability of the first support base 5211 and the second support base 5213, making it more suitable for hot stamping printing work scenarios with greater force, and improving the stability and practicality of the taper adjustment mechanism 520.

[0069] In this embodiment, a clearance groove is provided on the outer edge of the wheel 511 at a corresponding position to the reinforcing rod. By providing the clearance groove, interference between the reinforcing rod and the wheel 511 is avoided during movement, providing a larger rotation space for the taper adjustment structure, improving the adjustment range of the workpiece surface taper, and enhancing practicality.

[0070] The hot stamping structure 400 in this embodiment includes a vertical adjustment module 420, a first horizontal adjustment module 430, a longitudinal adjustment module 440, a swing adjustment module 450, and a hot stamping head 460.

[0071] The vertical adjustment module 420 has a mounting plate for mounting the hot stamping structure 400 onto the frame 100; the vertical adjustment module 420 has a vertically movable end.

[0072] The first horizontal adjustment module 430 is connected to the movable end of the vertical adjustment module 420; the first horizontal adjustment module 430 has a movable end for horizontal movement;

[0073] The longitudinal adjustment module 440 is connected to the movable end of the first lateral adjustment module 430, and the longitudinal adjustment module 440 has a movable end that moves longitudinally.

[0074] The swing adjustment module 450 is connected to the moving end of the longitudinal adjustment module 440, and the swing adjustment module 450 has a rotating end that can rotate about the transverse axis.

[0075] The hot stamping head 460 is used to perform heat transfer printing on the workpiece, and the hot stamping head 460 is connected to the moving end of the swing adjustment module 450.

[0076] The hot stamping structure 400 of this embodiment uses the vertical adjustment module 420, the first horizontal adjustment module 430, the longitudinal adjustment module 440, and the swing adjustment module 450 to drive the hot stamping head 460 to adjust in the vertical, horizontal, longitudinal, and rotational directions with the horizontal axis as the axis. This gives the hot stamping head 460 multiple degrees of freedom, including X-axis moving joints, Y-axis moving joints, Z-axis moving joints, and X-axis rotary joints, to meet the heat transfer requirements of different workpieces. It can adjust the processing surface at multiple angles, increase the processing area, and make the hot stamping structure 400 adaptable to the processing requirements of transfer surfaces of different lengths, widths, and tilt angles, thus enhancing its practicality.

[0077] Specifically, the vertical adjustment module 420 includes a first protective shell, a first driving member, a first lead screw 422, and a first slider 423. The first protective shell is a box structure with an internal cavity, wherein the first driving member, the first lead screw 422, and the first slider 423 are disposed in the cavity of the first protective shell. A mounting plate is disposed on the back of the first protective shell. The two ends of the first lead screw 422 are rotatably connected to the mounting plate through connectors, and the first lead screw 422 is vertically arranged. The first slider 423 is screwed to the first lead screw 422. The first driving member drives the first lead screw 422 to rotate, thereby driving the first slider 423 to move vertically, so that the first slider 423 is the moving end of the vertical adjustment module 420.

[0078] The top of the first protective shell is provided with a top plate 424, and an elastic element 425 is provided between the first slider 423 and the top plate 424. The elastic element 425 applies an upward elastic force to the first slider 423.

[0079] The elastic element 425 provides an elastic force that drives the hot stamping head 460 upward, i.e., an elastic force that moves it away from the workpiece. This prevents the hot stamping head 460 from falling rapidly in the event of a power outage, thus avoiding damage to the workpiece or equipment failure, preventing impact, and improving equipment safety. Secondly, by applying an elastic force in the same direction as the sliding direction of the first lead screw 422, it helps to eliminate the transmission gap between the first lead screw 422 and the first slider 423, thereby making the movement of the vertical adjustment module 420 smoother, avoiding wobbling, and improving its stability, thus improving the vertical movement accuracy of the hot stamping head 460.

[0080] Specifically, the elastic element 425 can provide elastic force through springs, pneumatic rods, dampers, etc., wherein the spring can be a metal spring or a gas spring. In this embodiment, the elastic element 425 is implemented using a metal spring, which, while providing the elastic force that satisfies the above solution, also has the advantages of low cost, simple structure, and convenient installation.

[0081] The first lateral adjustment module 430 includes a second protective shell, a lateral drive member, a second lead screw, and a second slider. The second protective shell is a box structure with an internal cavity, in which the lateral drive member, the second lead screw, and the second slider are disposed. The second protective shell is fixed to the first slider 423, thereby allowing the first lateral adjustment module 430 to move vertically under the drive of the first slider 423. The two ends of the second lead screw are rotatably connected to the second protective shell through connectors, and the second lead screw is arranged laterally. The second slider is screwed to the second lead screw. The lateral drive member drives the second lead screw to rotate, thereby driving the second slider to move laterally, thus making the second slider the moving end of the first lateral adjustment module 430.

[0082] In some preferred embodiments, a second lateral adjustment module 490 is also included. The structure of the second lateral adjustment module 490 is the same as that of the first lateral adjustment module 430. The second lateral adjustment module 490 is connected to the moving end of the vertical adjustment module 420 via a connecting plate, that is, connected to the first slider 423. The second lateral adjustment module 490 has an extension end for lateral movement. The extension end can be used to fix other functional components, such as screen printing heads, to meet the processing requirements of different workpieces and improve practicality.

[0083] The longitudinal adjustment module 440 of this embodiment includes a connecting frame and a fourth adjustment plate; the connecting frame is connected to the moving end of the first transverse adjustment module 430, that is, connected to the second slider, and the fourth adjustment plate is connected to the swing adjustment module 450;

[0084] The connecting frame includes a third adjusting plate 4411, on which an adjusting groove is formed, and the adjusting groove is arranged longitudinally; an adjusting block is fixed on the fourth adjusting plate, and the adjusting block is slidably connected in the adjusting groove, so that the fourth adjusting plate can slide longitudinally relative to the connecting frame to adjust the longitudinal position of the hot stamping head 460.

[0085] The longitudinal adjustment module 440 further includes a second locking component, which is used to lock the relative position between the third adjustment plate 4411 and the fourth adjustment plate.

[0086] The swing adjustment module 450 includes a first adjustment plate 451 and a second adjustment plate 452. The first adjustment plate 451 is connected to the moving end of the longitudinal adjustment module 440, namely the fourth adjustment plate, and the second adjustment plate 452 is connected to the hot stamping head 460.

[0087] The first adjusting plate 451 is hinged to the second adjusting plate 452, and a second rotating shaft 4511 is formed at the hinge. The second rotating shaft 4511 is arranged laterally, so that the hot stamping head 460 can rotate relative to the longitudinal adjusting module 440 around the second rotating shaft 4511 under the drive of the second adjusting plate 452, thereby realizing the adjustment of the hot stamping structure 400 in the lateral rotation direction.

[0088] Furthermore, a limiting groove is provided on the first adjusting plate 451, and the limiting groove is located near the second rotating shaft 4511; a limiting block is fixed on the second adjusting plate 452, and the limiting block is slidably connected in the limiting groove; by the limiting block abutting against the end of the limiting groove, the second adjusting plate 452 is restricted from further rotation relative to the first adjusting plate 451;

[0089] The swing adjustment module 450 also includes a first locking component, which is used to lock the relative angle between the first adjustment plate 451 and the second adjustment plate 452 to prevent the angle of the hot stamping head 460 from changing during the processing and affecting the transfer quality.

[0090] The hot stamping structure 400 in this embodiment also includes a feeding and rewinding tensioning mechanism 470, which is used to tension, convey and recycle electroplated aluminum foil; the feeding and rewinding tensioning mechanism 470 is connected to the second adjusting plate 452 through a connecting plate; thereby enabling the rewinding tensioning mechanism to move synchronously with the hot stamping head 460.

[0091] The feeding and rewinding tensioning mechanism 470 includes a feeding assembly, a first tensioning roller assembly, a first paper support rod assembly, a rewinding assembly, a second tensioning roller assembly, and a second paper support roller assembly. The feeding assembly, the first tensioning roller assembly, and the first paper support rod assembly are arranged in parallel from top to bottom, and the rewinding assembly, the second tensioning roller assembly, and the second paper support roller assembly are also arranged in parallel from top to bottom. The feeding assembly, the first tensioning roller assembly, the first paper support rod assembly, the rewinding assembly, the second tensioning roller assembly, and the second paper support roller assembly are symmetrically arranged on opposite sides of the hot stamping head 460. The feeding assembly, the first tensioning roller assembly, and the first paper support rod assembly are located on the feeding side of the hot stamping head 460, and the rewinding assembly, the second tensioning roller assembly, and the second paper support roller assembly are located on the discharge side of the hot stamping head 460.

[0092] The electroplated aluminum foil is sequentially wound around the feeding assembly, the first tensioning roller assembly, the first paper support rod assembly, the second paper support roller assembly, the second tensioning roller assembly, and the rewinding assembly to tension, convey, and recycle the electroplated aluminum foil. The feeding assembly rotates to convey the electroplated aluminum foil to be transferred to the hot stamping head 460, and the rewinding assembly recycles the electroplated aluminum foil that has not been transferred. This arrangement keeps the electroplated aluminum foil in a taut state, avoiding wrinkles caused by the loosening of the electroplated aluminum foil that would affect the heat transfer quality.

[0093] In a preferred embodiment, a photoelectric adjustment device 480 is also included. The photoelectric adjustment device 480 is located near the hot stamping head 460 and is used to acquire and identify the bottom features of the workpiece to be printed. The identified information is transmitted to the hot stamping head 460, and the position of the hot stamping head 460 is adjusted according to the position information so that the pattern on the electroplated aluminum foil is transferred to the corresponding workpiece to be printed, thereby ensuring the accuracy of the transfer position of the workpiece.

[0094] The hot stamping head 460 of this embodiment includes a fifth adjusting plate 461, a heating cover 462, a hot stamping shaft, a hot stamping roller, and a third driving device 465; wherein the fifth adjusting plate 461 is screwed to the second adjusting plate 452 through several connecting screws, and the hot stamping head 460 can be finely adjusted vertically by adjusting the relative position of the connecting screws and the second adjusting plate 452.

[0095] The heating cover 462 is fixed to the fifth adjusting plate 461. The hot stamping shaft is rotatably connected inside the heating cover 462, and the hot stamping roller is sleeved on the hot stamping shaft. The third driving device 465 includes a drive motor and a transmission device connected to the motor. The drive motor drives the hot stamping roller to rotate through the transmission device. In this embodiment, the transmission device is a chain drive device. The driving sprocket is connected to the drive motor, and the driven sprocket is connected to the hot stamping shaft. The chain wraps around the driving sprocket and the driven sprocket in sequence to achieve power transmission. Using a chain drive device to drive the hot stamping shaft to rotate is beneficial to the spatial layout of the hot stamping roller compared to a direct connection method, making the layout between the devices more compact and reducing the overall size of the hot stamping machine. In some implementations, the transmission device may also be a belt drive device or a gear drive device.

[0096] In this embodiment, the feeding mechanism 200 includes a feeding transmission belt 220, a pre-positioning device 230, and a loading robot 240; the pre-positioning device 230 and the loading robot 240 are slidably connected to the loading station 210, thereby adjusting the position of the pre-positioning device 230 and the loading robot 240 on the loading station 210 to meet the transportation needs of printing workpieces of different sizes;

[0097] The pre-positioning device 230 includes a first positioning component 231 and a second positioning component 232; the first positioning component 231 includes a first telescopic rod, and a first positioning plate is connected to the movable end of the first telescopic rod; the second positioning component 232 includes a second telescopic rod, and a second positioning plate is connected to the movable end of the second telescopic rod; the first positioning plate and the second positioning plate are arranged opposite to each other, and a positioning gap for clamping the printing workpiece is formed between the first positioning plate and the second positioning plate.

[0098] The loading robot 240 includes a rotating component 241, a first clamping component 242, and a second clamping component 243. The rotating component 241 is installed at the loading station 210 and has a rotating shaft. The first clamping component 242 and the second clamping component 243 are fixed at an angle to the circumference of the rotating shaft of the rotating component 241. The rotating component 241 drives the first clamping component 242 to transport the printing workpiece on the feeding conveyor belt 220 to the positioning gap for pre-positioning. At the same time, the second clamping component 243 transports the pre-positioned printing workpiece in the positioning gap to the turntable structure 500.

[0099] By rotating the rotating component 241 by an angle, the printing workpiece is pre-positioned and transported to the turntable structure 500, thereby realizing the multi-stage positioning and segmented transport of the printing workpiece. This reduces the adjustment range and transport distance of the printing workpiece in a single operation, expands the tolerance for the feeding position deviation of the printing workpiece, optimizes the feeding path, and improves the feeding efficiency.

[0100] The discharge mechanism 300 includes a discharge transmission belt 320 and a discharge robot 330. The discharge robot 330 is slidably connected to the discharge station 310, so that the position of the discharge robot 330 on the discharge station 310 can meet the transportation needs of printed workpieces of different sizes. The discharge robot 330 is provided with a third clamping component, which clamps and transfers the printed workpiece after the transfer is completed from the turntable structure 500 to the discharge transmission belt 320, and then the discharge transmission belt 320 transfers the printed workpiece to the next process.

[0101] In this embodiment, the first clamping component 242, the second clamping component 243, and the third clamping component are all cylinder gripper devices, and their specific structures are well known to those skilled in the art, so they will not be described in detail here.

[0102] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A multi-station hot stamping machine characterized by, The machine frame, the feeding mechanism, the discharging mechanism, the gilding structure and the rotating disc structure are included. The machine frame has an installation chamber, and upper and lower ends of the installation chamber form an upper feeding end and a lower discharging end, respectively. The feeding mechanism is arranged at the upper feeding end and used for transporting the printing workpiece to the rotating disc structure. The discharging mechanism is arranged at the lower discharging end and used for receiving and transporting the printing workpiece away from the rotating disc structure. The gilding structure and the rotating disc structure are fixed in the installation chamber. The gilding structure includes a gilding machine head, and the gilding machine head is used for heat transfer printing on the printing workpiece. The rotating disc structure is arranged between the feeding mechanism, the discharging mechanism and the gilding structure. The rotating disc structure forms an upper feeding station near the feeding mechanism, forms a gilding station near the gilding structure, and forms a lower discharging station near the discharging mechanism. The rotating disc structure includes a rotating platform, a taper adjusting mechanism and a first driving assembly. The rotating platform is rotationally connected to the machine frame, and a first rotation shaft is formed at the connection. The rotating platform is provided with installation positions corresponding to the upper feeding station, the gilding station and the lower discharging station. The taper adjusting mechanism is installed on each installation position and used for fixing and taper adjusting of the printing workpiece. The first driving assembly is used for driving the rotating platform to rotate, so that the taper adjusting mechanism on each installation position drives the printing workpiece to switch between the upper feeding station, the gilding station and the lower discharging station. The rotating platform includes a wheel disc, and first and second sides are formed at both sides of the wheel disc. The direction close to the first rotation shaft is the inner side, and the direction away from the first rotation shaft is the outer side. The installation position is arranged on the wheel disc. The installation position includes a mounting hole, a first mounting piece and a second mounting piece. The mounting hole is a through hole, the first mounting piece is arranged on the first side, and the second mounting piece is arranged on the second side. The taper adjusting mechanism includes a support assembly, a tool clamp and an adjusting assembly. The support assembly includes a base, and the base penetrates the mounting hole. The first support seat is arranged on the outer side of one end of the base close to the first side, and the mounting shaft part is formed on the first support seat and hinged to the first mounting piece. The tool clamp is arranged on the first support seat and used for fixing the printing workpiece. The adjusting assembly is arranged on one side of the base close to the first rotation shaft, and includes a second driving piece and a mounting seat. The mounting seat is slidingly connected to the base, and the second driving piece is used for driving the mounting seat to translate relative to the base, so that the printing workpiece rotates around the mounting shaft part under the driving of the first support seat.

2. A multi-station stamping press according to claim 1, wherein, The support assembly further includes a second support seat. The first support seat and the second support seat are arranged at opposite ends of the base, so that the first support seat is arranged close to the first side, and the second support seat is arranged close to the outer side of the second side. The tool clamp includes a first tool assembly and a second tool assembly. The first tool assembly is fixed to the first support seat, and the second tool assembly is fixed to the second support seat. The first tool assembly and the second tool assembly are used for clamping and fixing the workpiece.

3. A multi-station stamping press according to claim 1, wherein, The rotating platform further comprises a linkage assembly, which comprises a support shaft, a sleeve and a linkage, the support shaft is coaxially arranged with the wheel disc; the sleeve is sleeved on the support shaft and can slide in the axial direction of the support shaft; one end of the linkage is connected with the sleeve and the other end is fixed with the mounting seat.

4. A multi-station stamping press according to claim 1, wherein, The gilding structure comprises a vertical adjusting module, a first horizontal adjusting module, a longitudinal adjusting module, a swing adjusting module and a gilding head; The vertical adjusting module has a mounting plate for mounting the gilding structure on the gilding machine frame; the vertical adjusting module has a moving end moving vertically; The first horizontal adjusting module is connected with the moving end of the vertical adjusting module; the first horizontal adjusting module has a moving end moving horizontally; The longitudinal adjusting module is connected with the moving end of the first horizontal adjusting module, and the longitudinal adjusting module has a moving end moving longitudinally; The swing adjusting module is connected with the moving end of the longitudinal adjusting module, and the swing adjusting module has a rotating end rotating around a horizontal axis; The gilding head is used for heat transfer printing on the printing workpiece, and the gilding head is connected with the rotating end of the swing adjusting module; the gilding head is adjusted in the vertical, horizontal, longitudinal and horizontal axis rotation directions through the vertical adjusting module, the first horizontal adjusting module, the longitudinal adjusting module and the swing adjusting module.

5. A multi-station hot stamping machine according to claim 4, wherein, The swing adjusting module comprises a first adjusting plate and a second adjusting plate, the first adjusting plate is connected with the moving end of the longitudinal adjusting module, and the second adjusting plate is connected with the gilding head; The first adjusting plate and the second adjusting plate are hinged, and a second rotating shaft is formed at the hinge, the second rotating shaft is horizontally arranged, so that the gilding head can rotate around the second rotating shaft relative to the longitudinal adjusting module under the driving of the second adjusting plate, and the adjustment of the gilding structure in the horizontal rotation direction is realized.

6. A multi-station hot stamping machine as claimed in claim 5, wherein, The vertical adjusting module comprises a first driving member, a first screw rod and a first sliding block; the first screw rod is rotatably connected to the mounting plate through connecting members at both ends, and the first screw rod is vertically arranged; the first sliding block is screwed with the first screw rod; the first driving member drives the first screw rod to rotate, thereby driving the first sliding block to move vertically; The vertical adjusting module further comprises a top plate, the top plate is fixed on the top of the mounting plate; a resilient member is arranged between the first sliding block and the top plate, and the resilient member applies an upward elastic force to the first sliding block.

7. A multi-station hot stamping machine as claimed in claim 4, wherein, It further comprises a feeding and winding tensioning mechanism for tensioning, conveying and recovering the anodized aluminum foil; The feeding and winding tensioning mechanism is connected with the rotating end of the swing adjusting module; so that the winding tensioning mechanism can move synchronously with the gilding head; It further comprises an electric eye adjusting device, which is arranged near the gilding head, is used for acquiring and identifying the bottom features of the printing workpiece, generates position adjustment information based on the identified information, and adjusts the position of the gilding head according to the position adjustment information.

8. A multi-station hot stamping machine as defined in claim 1, wherein, The feeding mechanism comprises a feeding transmission belt, a pre-positioning device and a feeding manipulator; the pre-positioning device and the feeding manipulator are arranged at the feeding station; The pre-positioning device comprises a first positioning assembly and a second positioning assembly; the first positioning assembly comprises a first telescopic rod, and a first positioning plate is connected to the movable end of the first telescopic rod; the second positioning assembly comprises a second telescopic rod, and a second positioning plate is connected to the movable end of the second telescopic rod; the first positioning plate and the second positioning plate are arranged oppositely, and a positioning gap for clamping the printing workpiece is formed between the first positioning plate and the second positioning plate.

9. A multi-station hot stamping machine according to claim 8, wherein, The feeding manipulator comprises a rotating assembly, a first clamping assembly and a second clamping assembly; the rotating assembly is installed at the feeding station, and the rotating assembly has a rotating shaft; the first clamping assembly and the second clamping assembly are fixed at the rotating shaft of the rotating assembly in a circumferential direction at an angle; the first clamping assembly is driven by the rotating assembly to transport the printing workpiece on the feeding transmission belt to the positioning gap for pre-positioning, and at the same time, the second clamping assembly transports the printing workpiece pre-positioned in the positioning gap to the rotating disc structure.

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