Metal coin stamp stamping machine

Abstract

The invention relates to a metal coin stamp stamping machine which comprises a machine box body, a mold disc device, a stamping assembly, a feeding assembly and a discharging assembly are arranged in the machine box body, the mold disc device comprises a mold disc body and a mold disc rotation driving unit, a plurality of stamping cavity channels are formed in the circular track of the disc face of the mold disc body, and the stamping assembly comprises an upper stamping mechanism and a lower stamping mechanism. The upper pressing die mechanism and the lower pressing die mechanism are used for cooperatively pressing blanks in the pressing cavity channel, the feeding assembly comprises a feeding mechanism and a feeding mechanism, the feeding mechanism is used for conveying the blanks to the feeding mechanism, the feeding mechanism is used for inputting the blanks into the pressing cavity channel, the discharging assembly comprises a discharging mechanism and a discharging mechanism, the discharging mechanism is used for picking up coin stamps from the pressing cavity channel, and the discharging mechanism is used for discharging the coin stamps. The discharging mechanism is used for outputting the coins. According to the invention, an integrated automatic integration scheme that the mold disc device, the coining assembly, the feeding assembly and the discharging assembly are assembled in the case body is adopted, and the automatic coining machine has the characteristics of automatic operation, high coining processing efficiency and quality, safe operation, stable operation and the like.

Description

Technical Field

[0001] The invention relates to a special device for stamping metal coins and stamps, in particular to an improved metal coin and stamp stamping machine, belonging to the field of coin and stamp stamping machines. Background Art

[0002] Metal coins and seals are the collective name for metal coins and metal seals. Metal coins are issued by the legal currency issuing institutions of the country, such as the People's Bank of China. They have a legal face value and are the legal tender of the country. They can circulate in the market and have the same value as paper money. Metal seals are just souvenirs or works of art. They have no face value, are not legal tender, and cannot be circulated as currency in the market. In order to meet the requirements of long-term preservation and not easy to damage, metal coins and seals are usually made of metal materials with good corrosion resistance and durability. According to the different coin values ​​and preciousness, gold, silver, copper, iron, zinc, etc. can be selected. These metal materials have their own characteristics. For example, gold and silver are precious metals that can reflect the preciousness of coins and seals, while copper, iron and zinc have lower value, but better durability, suitable for large-scale issuance and use, etc., so as to meet the different requirements of metal coins and seals. The metal coin stamping machine is a special production equipment designed specifically for the properties of metal coins and stamps. It has the following characteristics: ⑴ High precision. The coin stamping machine adopts advanced pressure control system and mold design, which can ensure the clarity and accuracy of the coin stamp pattern and meet various high relief and high precision requirements; ⑵ High efficiency. The equipment usually adopts automated design, which can realize a fast and continuous stamping process, greatly improving production efficiency; ⑶ Good applicability. The coin stamping machine can adapt to metal sheets of different materials, sizes and shapes to meet diversified production needs.

[0003] Metal coin stamping machines usually adopt a closed stamping process, specifically, in a relatively closed space, the upper die and the lower die are used to stamp the predetermined relief pattern on the front and back of the blank. In this process, the operator needs to adjust the position of the upper die and the lower die, manually load and calibrate the position of the blank, control the upper die and the lower die to complete the stamping operation, adjust the position of the upper die and the lower die again, manually remove the stamped coin and put it into the coin bin for storage, and repeat the above process to meet the production needs. The above process includes two parts: machining and manual operation. Only after manual loading can the stamping operation be performed, and only after the stamping operation is completed can the material be manually unloaded. This process of alternating manual operation and machine processing can only process one coin in one round, and the production efficiency is low. Moreover, this process relies heavily on the operation of the worker. The worker needs to manually adjust the upper die and the lower die, and put his hand in and out of the stamping station to complete the loading and unloading operations. Operational errors are prone to occur during long-term and frequent repeated operations, which not only affects the quality of stamping, but also poses a great risk to the personal safety of the workers. In order to improve the above problems, it is necessary for those skilled in the art to carry out targeted improvement designs. Summary of the invention

[0004] The metal coin stamping machine of the present invention discloses a new scheme, which adopts an integrated automated integration scheme of assembling a die plate device, a stamping assembly, a loading assembly and a unloading assembly in a chassis, uses a feeding mechanism to convey the blank to the loading mechanism, uses the loading mechanism to convey the blank to the stamping cavity of the die plate device which is rotated and switched to the loading station, uses an upper die pressing mechanism and a lower die pressing mechanism to cooperate with stamping to stamp the blank in the stamping cavity of the die plate device which is rotated and switched to the stamping station, uses an unloading mechanism to pick up the coins and stamps in the stamping cavity of the die plate device which is rotated and switched to the unloading station, uses a discharging mechanism to output the picked up coins and stamps, and realizes an automated metal coin stamping process by cyclically repeating the above process, thereby solving the problems of low production efficiency caused by the existing similar schemes which adopt manual operation to control loading and unloading and the upper and lower dies cooperating in stamping, and workers are prone to operating errors during long-term and frequent repeated operations, which affects the stamping quality, and there are also large risks to personal safety.

[0005] The metal coin stamp stamping machine of the present invention comprises a chassis body, in which a die plate device, a stamping assembly, a loading assembly and a unloading assembly are arranged, the die plate device comprises a die plate body and a die plate rotation drive unit, a plurality of stamping cavities are arranged on the circular track of the plate surface of the die plate body, the stamping assembly comprises an upper stamping mechanism and a lower stamping mechanism, the upper stamping mechanism and the lower stamping mechanism are used for cooperating in stamping blanks in the stamping cavity which is rotated and switched to the stamping station, the loading assembly comprises a feeding mechanism and a loading mechanism, the feeding mechanism is used for conveying blanks to the upper feeding mechanism, the loading mechanism is used for inputting blanks into the stamping cavity which is rotated and switched to the loading station, the unloading assembly comprises a unloading mechanism and a discharging mechanism, the unloading mechanism is used for picking up coins and stamps from the stamping cavity which is rotated and switched to the unloading station, and the discharging mechanism is used for outputting coins and stamps picked up by the unloading mechanism.

[0006] Furthermore, the mold plate body of the present scheme includes a circular disk surface, the inner ring end of the circular disk surface is connected to the outer side of the coupling cylinder at the inner ring center of the circular disk surface through spokes, the coupling cylinder is transmission-connected to the mold disk rotation drive unit arranged at the central lower part of the chassis body through the mold disk shaft, and a plurality of embossing cavities equidistantly distributed along the circumferential direction are arranged on the circular disk surface, the upper die mechanism is arranged above the embossing station on the front side of the chassis body, the lower die mechanism is arranged below the embossing station on the front side of the chassis body, the loading assembly is arranged above the loading station on the left side of the chassis body, and the unloading assembly is arranged above the unloading station on the right side of the chassis body.

[0007] Furthermore, the embossing cavity channel of the present scheme includes an upper embossing cavity section and a lower die mounting section, the embossing cavity section includes an arcuate channel which gradually expands upward, the lower die mounting section includes a lower die cavity section and a lower die push handle channel, a lower die cavity section is provided with a lower die module, the lower die cavity section forms an axial sliding connection with a circumferential limit, and the lower die push handle channel is provided with a lower die push handle which is connected to the bottom of the lower die module.

[0008] Furthermore, the upper die mechanism of the present scheme includes an upper die driving unit, an upper die frame, and an upper die rod. The upper die driving unit is transmission connected to the upper die frame below through the upper die frame push rod, the corner end of the upper die frame forms a guide sliding connection with the upper guide column extending vertically, the upper die frame is connected to the upper end of the upper die rod below, and an upper pressing module is arranged on the lower end of the upper die rod. The lower die mechanism includes a lower die driving unit, a lower die frame, and a lower die rod. The lower die driving unit is transmission connected to the lower die frame above through the lower die frame push rod, the corner end of the lower die frame forms a guide sliding connection with the lower guide column extending vertically, the lower die frame is connected to the lower end of the lower die rod above, and the upper end of the lower die rod extending upward into the lower die push handle channel pushes the lower die module to cooperate with the upper die module on the lower end of the upper die rod extending downward into the imprinting cavity section to imprint the blank.

[0009] Furthermore, the upper pressure rod of the present invention is an ultrasonic amplitude transformer, which is a tapered rod structure with a radial dimension gradually decreasing downward. An ultrasonic transducer is provided on the upper end of the upper pressure rod, and the ultrasonic transducer is electrically connected to the ultrasonic generator.

[0010] Furthermore, the loading mechanism of the present scheme includes a loading suction cup, which includes a loading suction cup arm and a loading suction cup head. The upper end of the loading suction cup arm is transmission-connected to the loading power cylinder, and the loading suction cup head is provided on the lower end head of the loading suction cup arm. The loading suction cup head is air-connected to the negative pressure control unit in the loading suction cup arm, and the loading suction cup head is arranged above the tail end outlet of the loading channel, and the tail end outlet of the loading channel is arranged above the loading station. A loading door panel that rotates up and down to open and close is provided at the tail end outlet of the loading channel, and the loading door panel is connected to the tail end of the loading channel by an elastic hinge. A plurality of loading power rollers are provided in the loading channel, and the loading power rollers are used to transport the blanks to the tail end outlet of the loading channel, the loading suction cup head is used to pick up and unload the blanks, and the loading power cylinder is used to drive the loading suction cup to move up and down.

[0011] Furthermore, the feeding mechanism of the present scheme includes an upright feeding bin channel, a feeding port is provided at the upper end of the feeding bin channel, a plurality of blanks stacked up and down are provided in the feeding bin channel, a feeding power roller is provided on the opposite side of the lower end opening of the feeding bin channel, and the feeding power roller is used to transport the stacked blanks downward one by one to the feeding power roller in the head end of the feeding channel.

[0012] Furthermore, the unloading mechanism of the present scheme includes a unloading suction cup, which includes a unloading suction cup arm and a unloading suction cup head. The upper end of the unloading suction cup arm is transmission-connected to the unloading power cylinder, and the lower end head of the unloading suction cup arm is provided with a unloading suction cup head, which is air-supplied to the negative pressure control unit in the unloading suction cup arm, and the unloading suction cup head is arranged above the head end inlet of the unloading channel, and the head end inlet of the unloading channel is arranged above the unloading station, and a unloading door panel that rotates up and down to open and close is provided at the head end inlet of the unloading channel, and the unloading door panel is connected to the head end of the unloading channel by an elastic hinge, and a plurality of unloading power rollers are provided in the unloading channel, and the unloading power rollers are used to output coins and stamps from the unloading channel, and the unloading suction cup head is used to pick up and unload coins and stamps, and the unloading power cylinder is used to drive the unloading suction cup to move up and down.

[0013] Furthermore, the discharging mechanism of the present scheme includes a pushing cam arranged on the opposite side of the head end of the feeding channel, the wheel axle of the pushing cam is transmission connected with the cam driving unit, and the rotating pushing cam is used to push the coins and medals at the entrance of the head end of the feeding channel through the upward inclined guide wedge block to the feeding power roller inside the head end of the feeding channel.

[0014] Furthermore, an embossing cavity lubrication mechanism is also provided in the chassis of the present scheme, and the embossing cavity lubrication mechanism includes a lifting drive unit, a rotating drive unit, a mechanism frame, and a lubricating component. The lubricating component includes a connecting rod, and a lubricating wiper is provided on the lower end of the connecting rod. The lifting drive unit is transmission-connected to the mechanism frame below through a mechanism frame push rod, and the corner end of the mechanism frame is connected to the mechanism guide column extending up and down to form a guiding sliding connection. The mechanism frame is connected to the lubricating component below, and the lifting drive unit is used to drive the lubricating component to move up and down. The upper end of the connecting rod is transmission-connected to the rotating drive unit, and the rotating drive unit is used to drive the lubricating wiper to rotate, and the lubricating wiper is used to apply grease to the side wall of the imprinting position in the imprinting cavity.

[0015] The metal coin stamp stamping machine of the present invention adopts an integrated automated integration scheme of assembling the die plate device, stamping assembly, loading assembly, and unloading assembly in the chassis, which can realize automatic loading, stamping, and unloading operations, and meet the requirements that loading, stamping, and unloading can be performed simultaneously, which significantly improves the existing methods that rely on manual operation to control loading, stamping, and unloading, such as low production efficiency, easy operation errors, affecting stamping quality, and large personal safety risks. It significantly improves the automation level, processing efficiency, and quality of the equipment, greatly reduces the labor intensity of operators, ensures the personal safety of operators, and eliminates various quality and safety hazards that may be caused by manual operation. This scheme uses a feeding mechanism to transport the blank to the feeding mechanism, thereby achieving the technical purpose of automatic feeding, and then uses the feeding mechanism to transport the blank to the stamping cavity of the die plate device that is rotated and switched to the loading station, thereby achieving efficient automatic loading, avoiding manual loading by operators, significantly improving the efficiency of loading, and eliminating the potential quality and safety hazards of manual loading. While the material is being loaded, the present invention also uses the upper die mechanism and the lower die mechanism to cooperate with the stamping to rotate and switch to the blank in the stamping cavity of the die plate device at the stamping station, thereby realizing the automatic and efficient stamping operation. At the same time, the present invention uses the unloading mechanism to pick up the coins and stamps in the stamping cavity of the die plate device that rotates and switches to the unloading station, thereby realizing the technical purpose of automatic unloading, and then uses the discharging mechanism to output the picked coins and stamps, thereby realizing efficient automatic unloading, avoiding manual unloading by operators, significantly improving the efficiency of unloading, and eliminating the potential quality and safety hazards of manual unloading. The loading, stamping and unloading processes of this scheme are carried out simultaneously, and the stamping cavity is cyclically switched between different workstations through the mold plate device, so that the above process is repeated cyclically to realize the automated metal coin and seal stamping process, which significantly improves the processing efficiency and quality of metal coin and seal stamping. The equipment runs stably and reliably, and effectively solves the low production efficiency caused by the existing similar schemes that use manual operation to control loading and unloading and the upper and lower molds to cooperate in stamping. Workers are prone to operating errors during long-term and frequent repetitive operations, which affects the stamping quality. There are also great risks to personal safety. The scheme has the characteristics of automated operation, high stamping processing efficiency and quality, safe operation, and stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main view of a metal coin stamping machine.

[0017] Figure 2 It is a schematic diagram of a partial cross-section of a metal coin stamping machine from the main view.

[0018] Figure 3 Schematic diagram of the top view of the mold plate body.

[0019] Figure 4It is an assembly diagram of the die-plate device and the stamping assembly.

[0020] Figure 5 yes Figure 4 Enlarged schematic diagram of part A in the middle.

[0021] Figure 6 It is an assembly diagram of the die tray device and the feeding assembly.

[0022] Figure 7 yes Figure 6 Enlarged schematic diagram of part B in the middle.

[0023] Figure 8 It is an assembly diagram of the die tray device and the blanking assembly.

[0024] Fig. 9 yes Figure 8 Enlarged schematic diagram of part C in the middle.

[0025] Fig.10 It is a schematic diagram of a partial cross-section of a metal coin stamping machine from the rear view.

[0026] Fig.11 It is an assembly diagram of the die plate device and the stamping cavity lubrication mechanism.

[0027] Fig.12 yes Fig.11 Enlarged schematic diagram of part D in the middle.

[0028] in, 100 is a chassis, 101 is a die plate device, 102 is a stamping assembly, 103 is a loading assembly, 104 is a unloading assembly, 105 is a stamping cavity lubrication mechanism, 106 is a blank, 107 is a coin, 200 is a mold plate body, 210 is a circular disk surface, 220 is a spoke, 230 is a coupling cylinder, 240 is a mold plate shaft, 250 is an embossing cavity channel, 251 is an embossing cavity section, 252 is a lower pressing mold cavity section, 253 is a lower pressing mold push handle channel, 260 is a lower pressing module, 270 is a lower pressing mold push handle, 310 is an upper die mechanism, 311 is an upper die driving unit, 312 is an upper die frame, 313 is an upper die rod, 314 is an ultrasonic transducer, 320 is a lower die mechanism, 321 is a lower die driving unit, 322 is a lower die frame, 323 is a lower die rod, 301 is an upper die module, 410 is a feeding mechanism, 411 is a feeding bin channel, 412 is a feeding port, 413 is a feeding power roller, 420 is a loading mechanism, 421 is a loading suction cup arm, 422 is a loading suction cup head, 423 is a loading power cylinder, 430 is a loading channel, 431 is a loading door panel, 432 is a loading power roller, 510 is a material unloading mechanism, 511 is a material unloading suction cup arm, 512 is a material unloading suction cup head, 513 is a material unloading power cylinder, 520 is a material unloading channel, 521 is a material unloading door plate, 522 is a material unloading power roller, 530 is a material unloading mechanism, 531 is a material pushing cam, 532 is a cam driving unit, 533 is a material guiding wedge block, 610 is a lifting drive unit, 620 is a rotation drive unit, 630 is a mechanism frame, 640 is a lubricating component, 641 is a connecting rod, and 642 is a lubricating wiper. DETAILED DESCRIPTION

[0029] The following is a detailed description with reference to the accompanying drawings.

[0030] like Figure 1 , 2 As shown, the metal coin stamping machine of the present invention includes a chassis 100, in which a die plate device 101, a stamping assembly 102, a loading assembly 103, and a unloading assembly 104 are arranged. The die plate device 101 includes a die plate body 200 and a die plate rotation driving unit. A plurality of stamping cavities 250 are arranged on the circular track of the die plate body 200. The stamping assembly 102 includes an upper stamping mechanism 310 and a lower stamping mechanism 320. The upper stamping mechanism 310 and the lower stamping mechanism 320 are used to cooperate in the stamping cavity 250 when the stamping station is rotated and switched to the stamping station. The stamping blank 106, the loading assembly 103 includes a feeding mechanism 410 and a loading mechanism 420, the feeding mechanism 410 is used to convey the blank 106 to the loading mechanism 420, the loading mechanism 420 is used to input the blank 106 into the stamping cavity 250 that is rotated and switched to the loading station, the unloading assembly 104 includes a unloading mechanism 510 and a discharging mechanism 530, the unloading mechanism 510 is used to pick up the coin stamp 107 from the stamping cavity 250 that is rotated and switched to the unloading station, and the discharging mechanism 530 is used to output the coin stamp 107 picked up by the unloading mechanism 510.

[0031] The above scheme adopts an integrated automated integration scheme of assembling the mold plate device 101, the stamping assembly 102, the loading assembly 103, and the unloading assembly 104 in the chassis 100, which can realize automatic loading, stamping, and unloading operations, and meet the requirement that loading, stamping, and unloading can be performed simultaneously. Specifically, the blanks are loaded into the feeding mechanism 410 in batches, and the feeding mechanism 410 conveys the blanks 106 to the loading mechanism 420 one by one. After the loading mechanism 420 picks up the blanks 106, it is input and rotated to the stamping cavity 250 of the loading station. At this time, the mold plate body 200 rotates and switches the position, and switches the stamping cavity 250 containing the blanks 106 to the stamping station. At the same time, the upstream empty stamping cavity 250 is switched to the loading station. After that, the upper die mechanism 310 and the lower die mechanism 320 cooperate with the stamping to switch the blanks 106 in the stamping cavity 250 on the stamping station to form the coin stamp 107. At this time, the mold plate body 200 rotates and switches the position again, and switches the stamping cavity 250 containing the coin stamp 107 to the unloading station. At the same time, the upstream empty stamping cavity 250 containing the blanks The stamping cavity 250 with 106 is switched to the stamping station, and the empty stamping cavity 250 upstream is switched to the loading station. After that, the unloading mechanism 510 picks up the coin stamp 107 in the stamping cavity 250 on the unloading station and conveys it to the discharging mechanism 530. The discharging mechanism 530 outputs the conveyed coin stamp 107. At this time, the mold plate body 200 rotates and switches its position again, and the empty stamping cavity 250 is rotated and switched to the loading station. At the same time, the stamping cavity 250 upstream carrying the coin stamp 107 is switched to the unloading station, the stamping cavity 250 upstream carrying the blank 106 is switched to the stamping station, and the empty stamping cavity 250 upstream is switched to the loading station. This cycle is repeated to realize continuous and synchronous automatic loading, stamping and unloading operations. Based on this, this solution significantly improves the existing methods that rely on manual operation to control loading, stamping and unloading, which have caused many problems such as low production efficiency, easy operating errors, affecting stamping quality, and large personal safety risks. It significantly improves the automation level of the equipment and the processing efficiency and quality, greatly reduces the labor intensity of operators, ensures the personal safety of operators, and eliminates various quality and safety hazards that may be caused by manual operation.

[0032] This solution uses the feeding mechanism 410 to convey the blank 106 to the loading mechanism 420, thereby achieving the technical purpose of automatic feeding, and then uses the loading mechanism 420 to convey the blank 106 to the stamping cavity 250 of the mold plate device 101 that is rotated and switched to the loading station, thereby achieving efficient automatic loading, avoiding manual loading by operators, significantly improving the efficiency of loading, and eliminating the potential quality and safety hazards of manual loading. While the loading operation is in progress, this solution also uses the upper die pressing mechanism 310 and the lower die pressing mechanism 320 to cooperate with the stamping to rotate and switch to the stamping station. The blank 106 in the stamping cavity 250 of the mold plate device 101 is realized, thereby realizing automatic control and efficient stamping operation. At the same time, the present scheme utilizes the unloading mechanism 510 to pick up the coin stamp 107 in the stamping cavity 250 of the mold plate device 101 that is rotated and switched to the unloading station, thereby achieving the technical purpose of automatic unloading, and then utilizes the discharging mechanism 530 to output the picked-up coin stamp 107, thereby realizing efficient automatic unloading, avoiding manual unloading by operators, significantly improving the unloading efficiency, and eliminating the potential quality and safety hazards of manual unloading. The loading, stamping and unloading processes of this scheme are carried out simultaneously, and the stamping cavity 250 is cyclically switched between different workstations through the mold plate device 101, so that the above process is repeated cyclically to realize the automated metal coin stamping process, which significantly improves the processing efficiency and quality of metal coin stamping. The equipment runs stably and reliably, and effectively solves the low production efficiency caused by the existing similar schemes using manual operation to control the loading and unloading of materials and the upper and lower molds cooperating in stamping. Workers are prone to operating errors during long-term and frequent repetitive operations, which affects the stamping quality. There are also great risks to personal safety. The scheme has the characteristics of automated operation, high stamping processing efficiency and quality, safe operation, and stable operation.

[0033] In order to facilitate the rotation and switching of the mold plate body 200, enhance the structural performance, and meet the requirements of simultaneous loading, stamping, and unloading, this solution discloses a specific structure and arrangement. Figure 1 , 2As shown in Figure 3, the mold plate body 200 of the present scheme includes a circular disk surface 210, the inner ring end of the circular disk surface 210 is connected to the outer side of the coupling cylinder 230 at the inner ring center of the circular disk surface 210 through the spoke 220, the coupling cylinder 230 is connected to the mold plate rotation drive unit arranged at the central lower part of the chassis body 100 through the mold plate shaft 240, and the circular disk surface 210 is provided with a plurality of embossing cavities 250 equidistantly distributed along the circumferential direction. The upper die mechanism 310 is arranged above the embossing station on the front side of the chassis body 100, and the lower die mechanism 320 is arranged below the embossing station on the front side of the chassis body 100. The loading assembly 103 is arranged above the loading station on the left side of the chassis body 100, and the unloading assembly 104 is arranged above the unloading station on the right side of the chassis body 100. The annular ring disk surface 210 reduces the overall weight of the mold disk body 200, which is conducive to meeting the accuracy requirements of switching workstations. The spokes 220 enhance the structural performance of the annular disk surface 210. The position arrangement of the loading assembly 103 and the unloading assembly 104 is more conducive to realizing the automated operation of loading and unloading.

[0034] In order to realize the function of the stamping cavity 250, meet the requirements of automatic flow feeding, avoid excessive friction between the stamped coin 107 and the inner wall of the cavity, and ensure the stamping quality, this solution discloses a specific structural setting. Figure 4 , 5 As shown, the stamping cavity 250 of the present scheme includes an upper stamping cavity section 251 and a lower die mounting section. The stamping cavity section 251 includes an upwardly expanding arc surface channel. The lower die mounting section includes a lower die cavity section 252 and a lower die push handle channel 253. A lower die cavity section 252 is provided with a lower pressing module 260. The lower pressing module 260 forms a circumferentially limited axial sliding connection with the lower die cavity section 252. The lower die push handle channel 253 is provided with a lower die push handle 270 connected to the bottom of the lower pressing module 260. The gradually expanding arc surface channel can not only adapt to the edge deformation of the blank 106 after stamping, and avoid excessive friction between the coin stamp 107 and the inner side of the cavity, but also facilitate the unloading mechanism 510 to extend into and pick up the coin stamp 107, effectively improving the quality and yield rate of the coin stamp 107. Placing the lower pressing module 260 in the lower pressing die cavity section 252 can meet the requirement of stably supporting the blank 106, improve the stability of stamping, and improve the stamping quality, and the lower pressing die push handle 270 can cooperate with the lower pressing die mechanism 320 to lift the lower pressing module 260 supporting the blank 106 upward during stamping to facilitate the stamping operation, wherein the limited sliding connection formed by the lower pressing module 260 and the lower pressing die cavity section 252 ensures the stability of stamping and improves the stamping quality.

[0035] Based on the above scheme, in order to realize the function of the stamping assembly 102 and improve the stability of the mechanism operation, this scheme discloses a specific mechanism setting. Figure 1 , 2As shown in Figures 4 and 5, the upper die mechanism 310 of the present invention comprises an upper die driving unit 311, an upper die frame 312, and an upper pressing rod 313. The upper die driving unit 311 is transmission-connected to the upper die frame 312 below through an upper die frame push rod. The corner end of the upper die frame 312 forms a guiding sliding connection with the upper guide column extending upward and downward. The upper die frame 312 is connected to the upper end of the upper pressing rod 313 below. The lower end of the upper pressing rod 313 is provided with an upper pressing module 301. The lower die mechanism 320 comprises a lower die driving unit 321, The lower die frame 322, the lower die rod 323, and the lower die driving unit 321 are connected to the upper lower die frame 322 through the lower die frame push rod, and the corner end of the lower die frame 322 forms a guide sliding connection with the lower guide column extending upward and downward, and the lower die frame 322 is connected to the lower end of the lower die rod 323 above, and the upper end of the lower die rod 323 extending upward into the lower die push handle channel 253 pushes the lower die module 260 and the upper die module 301 on the lower end of the upper die rod 313 extending downward into the imprinting cavity section 251 to cooperate with the imprinting blank 106. The guide sliding connection mode formed by the upper die frame 312 and the lower die frame 322 with the upper guide column and the lower guide column respectively greatly improves the stability of the operation of the imprinting mechanism and the accuracy of the imprinting operation, and significantly improves the imprinting quality.

[0036] In order to meet the requirements of stamping complex patterns, reduce the stamping pressure and improve the stamping quality, reduce the degree of deformation of the blank 106 under pressure, extend the service life of the mold, improve the stamping quality and the yield rate of the coin stamp 107, this solution discloses a specific method of using ultrasound to improve the stamping quality. Figure 4 , 5 As shown, the upper pressure rod 313 of this scheme is an ultrasonic horn, which is a tapered rod structure with a radial dimension gradually reduced downward. An ultrasonic transducer 314 is provided on the upper end of the upper pressure rod 313, and the ultrasonic transducer 314 is electrically connected to the ultrasonic generator. The on / off state and vibration frequency of the ultrasonic transducer 314 are controlled by the ultrasonic generator. When the ultrasonic transducer 314 is turned on, the ultrasonic vibration generated by it is amplified by the ultrasonic horn and cooperates with the pressure generated by the upper die mechanism 310 and the lower die mechanism 320 to perform an embossing operation on the blank 106. Ultrasonic vibration can reduce the deformation resistance of the material and has a softening effect on the metal material, so that the blank 106 can obtain a better embossing effect under a lower pressure, and at the same time improve the service life of the mold. The conical ultrasonic horn can effectively transmit and amplify the amplitude output by the ultrasonic transducer, can maintain a good resonant state, and make the vibration in a better resonant state.

[0037] In order to realize the function of the feeding mechanism 420 and meet the requirements of automatic feeding, this solution discloses a specific mechanism setting. Figure 2 , 6As shown in Figure 7, the feeding mechanism 420 of the present scheme includes a feeding suction cup, and the feeding suction cup includes a feeding suction cup arm 421 and a feeding suction cup head 422. The upper end of the feeding suction cup arm 421 is transmission-connected to the feeding power cylinder 423, and the lower end of the feeding suction cup arm 421 is provided with a feeding suction cup head 422, and the feeding suction cup head 422 is connected to the negative pressure control unit in the feeding suction cup arm 421 for air supply. The feeding suction cup head 422 is arranged above the tail end outlet of the feeding channel 430, and the tail end outlet of the feeding channel 430 The opening is arranged above the loading station, and a loading door panel 431 which rotates up and down to open and close is provided at the tail end outlet of the loading channel 430, and the loading door panel 431 is connected to the tail end of the loading channel 430 through an elastic hinge, and a plurality of loading power rollers 432 are provided in the loading channel 430, and the loading power rollers 432 are used to transport the blank 106 to the tail end outlet of the loading channel 430, and the loading suction cup head 422 is used to pick up and unload the blank 106, and the loading power cylinder 423 is used to drive the loading suction cup to move up and down. When the loading mechanism 420 is started, the blank 106 is transported from the loading channel 430 by the loading power roller 432 to the top of the loading door plate 431 at the tail end outlet of the loading channel 430. At this time, the loading power cylinder 423 drives the loading suction cup head 422 to move downward and suck the blank 106 through the loading suction cup arm 421, and then further pushes the loading door plate 431 downward until the sucked blank 106 is transported to the stamping cavity 250 on the loading station below, and then retracts upward into the loading door plate 431. The loading door plate 431 is automatically closed under the action of the elastic hinge, thereby completing a round of loading operation.

[0038] Based on the above scheme, in order to realize the function of the feeding mechanism 410 and meet the requirements of automatic feeding, this scheme discloses a specific mechanism setting. Figure 2 , 6 As shown in Figures 7 and 8, the feeding mechanism 410 of the present solution comprises an upright feeding bin channel 411, a feeding port 412 is provided at the upper end of the feeding bin channel 411, a plurality of blanks 106 stacked up and down are provided in the feeding bin channel 411, and a feeding power roller 413 is provided on the opposite side of the lower end opening of the feeding bin channel 411, and the feeding power roller 413 is used to transport the stacked blanks 106 downward one by one to the loading power roller 432 in the head end of the loading channel 430. When the feeding mechanism 410 is turned on and operated, the blanks 106 in the lower end opening of the feeding bin channel 411 move downward under the drive of the feeding power rollers 413 on both sides, until the bottom layer of blanks 106 falls on the loading power roller 432 in the head end of the loading channel 430, and the blanks 106 move through the loading channel 430 under the drive of the loading power roller 432 to the bottom of the loading suction cup head 422 at the tail end outlet, waiting to be picked up.

[0039] In order to realize the function of the material unloading mechanism 510 and meet the requirements of automatic unloading, this solution discloses a specific mechanism setting. Figure 2, 8 As shown in Figure 9, the unloading mechanism 510 of the present scheme includes an unloading suction cup, and the unloading suction cup includes an unloading suction cup arm 511 and an unloading suction cup head 512. The upper end of the unloading suction cup arm 511 is transmission-connected to the unloading power cylinder 513, and the unloading suction cup head 512 is arranged on the lower end of the unloading suction cup arm 511. The unloading suction cup head 512 is connected to the negative pressure control unit in the unloading suction cup arm 511 for air supply. The unloading suction cup head 512 is arranged above the head end inlet of the unloading channel 520. The front end inlet is arranged above the unloading station. A unloading door panel 521 which rotates up and down to open and close is provided at the front end inlet of the unloading channel 520. The unloading door panel 521 is connected to the front end of the unloading channel 520 through an elastic hinge. A plurality of unloading power rollers 522 are provided in the unloading channel 520. The unloading power rollers 522 are used to output the coins and stamps 107 from the unloading channel 520. The unloading suction cup head 512 is used to pick up and unload the coins and stamps 107. The unloading power cylinder 513 is used to drive the unloading suction cup to move up and down. When the unloading mechanism 510 is started, the unloading power cylinder 513 drives the unloading suction cup head 512 through the unloading suction cup arm 511 to push the unloading door panel 521 downward until it enters the stamping cavity 250 on the unloading station below and sucks the coin stamp 107, and then retracts upward into the unloading door panel 521. The unloading door panel 521 is automatically closed under the action of the elastic hinge, and the unloading suction cup head 512 unloads the coin stamp 107. The coin stamp 107 enters the head end of the unloading channel 520 under the action of the discharging mechanism 530, and then the coin stamp 107 is output by the unloading power roller 522, thereby completing a round of unloading operation.

[0040] Based on the above scheme, in order to realize the function of the discharging mechanism 530 and meet the requirements of automatic discharging, this scheme discloses a specific mechanism setting. Figure 2 , 8 As shown in Figures 9 and 10, the discharging mechanism 530 of the present scheme includes a push cam 531 arranged on the opposite side of the head end of the discharging channel 520. The wheel axle of the push cam 531 is connected to the cam driving unit 532 in transmission. The rotating push cam 531 is used to push the coin stamp 107 at the head end entrance of the discharging channel 520 to the discharging power roller 522 in the head end of the discharging channel 520 through the upwardly inclined guide wedge block 533. When the discharging mechanism 530 is turned on and operated, the cam driving unit 532 drives the push cam 531 to rotate, and the push cam 531 pushes the coin stamp 107 on the discharging door plate 521 at the head end entrance of the discharging channel 520 to the discharging power roller 522 in the head end of the discharging channel 520 through the guide wedge block 533, and then the discharging power roller 522 outputs the coin stamp 107 through the discharging channel 520.

[0041] During the stamping process of metal coins and stamps, the blank 106 will expand radially under the action of pressure. In some cases, the outer ring side of the blank 106 will have an interference fit with the mold surface in the mold cavity, thereby generating friction and heat release between the two. At this time, proper lubrication is required between the two to avoid excessive friction affecting the quality of the coin stamp 107 and damaging the mold. In order to meet the above lubrication needs, the present solution also discloses a specific mechanism for lubricating the inner side of the stamping position in the stamping cavity 250. Fig.10 , 11 As shown in Figures 12, the chassis 100 of the present solution is further provided with an imprinting cavity lubrication mechanism 105, which includes a lifting drive unit 610, a rotation drive unit 620, a mechanism frame 630, and a lubricating component 640. The lubricating component 640 includes a connecting rod 641, and a lubricating wiper 642 is provided on the lower end of the connecting rod 641. The lifting drive unit 610 is transmission-connected to the mechanism frame 630 below through a mechanism frame push rod. The corner ends of the mechanism frame 630 are connected to the mechanism guide columns extending vertically to form a guiding sliding connection. The mechanism frame 630 is connected to the lubricating component 640 below. The lifting drive unit 610 is used to drive the lubricating component 640 to move up and down. The upper end of the connecting rod 641 is transmission-connected to the rotation drive unit 620. The rotation drive unit 620 is used to drive the lubricating wiper 642 to rotate. The lubricating wiper 642 is used to apply grease to the side wall of the imprinting position in the imprinting cavity 250. When the annular disk 210 drives the stamping cavity 250 to rotate and switch to the lubrication station, the lifting drive unit 610 drives the lubrication component 640 to move downward through the mechanism frame 630 until the lubrication wiper 642 enters the stamping position in the stamping cavity 250. At this time, the rotation drive unit 620 drives the lubrication wiper 642 to rotate through the connecting rod 641, and grease is applied to the side wall of the stamping position in the stamping cavity 250, thereby achieving the technical purpose of lubrication. After that, the lifting drive unit 610 drives the lubrication component 640 to return upward to prepare for the next round of lubrication operation.

[0042] Unless otherwise specified, the devices, structures, mechanisms, components, etc. disclosed in this solution can be implemented using common and customary solutions known in the art. The metal coin stamping machine of this solution is not limited to the contents disclosed in the specific implementation. The technical solutions in the embodiments can be extended based on the understanding of those skilled in the art. Simple replacement solutions made by those skilled in the art based on this solution combined with common knowledge also fall within the scope of this solution.

Claims

1. A metal coin stamping machine, including a housing, characterized in that A die plate device, a stamping assembly, a loading assembly and a unloading assembly are provided in the chassis. The die plate device includes a die plate body and a die plate rotation drive unit. A plurality of stamping cavities are provided on the circular track of the die plate body. The stamping assembly includes an upper stamping mechanism and a lower stamping mechanism. The upper stamping mechanism and the lower stamping mechanism are used to cooperate in stamping blanks in the stamping cavity that is rotated and switched to the stamping station. The loading assembly includes a feeding mechanism and a loading mechanism. The feeding mechanism is used to convey the blanks to the loading mechanism. The loading mechanism is used to input the blanks into the stamping cavity that is rotated and switched to the loading station. The unloading assembly includes a unloading mechanism and a discharging mechanism. The unloading mechanism is used to pick up coins and stamps from the stamping cavity that is rotated and switched to the unloading station. The discharging mechanism is used to output the coins and stamps picked up by the unloading mechanism.

2. The metal coin stamping machine according to claim 1, characterized in that The mold plate body includes a circular disk surface, the inner ring end of the circular disk surface is connected to the outer side of a coupling cylinder at the inner ring center of the circular disk surface through spokes, the coupling cylinder is transmission-connected to the mold disk rotation drive unit arranged at the central lower part of the chassis body through a mold plate shaft, a plurality of stamping cavities equidistantly distributed along the circumferential direction are arranged on the circular disk surface, the upper stamping mechanism is arranged above the stamping station on the front side of the chassis body, the lower stamping mechanism is arranged below the stamping station on the front side of the chassis body, the loading assembly is arranged above the loading station on the left side of the chassis body, and the unloading assembly is arranged above the unloading station on the right side of the chassis body.

3. The metal coin stamping machine according to claim 1, characterized in that The stamping cavity includes an upper stamping cavity section and a lower stamping die mounting section, the stamping cavity section includes an arcuate channel that gradually expands upward, the lower stamping die mounting section includes a lower stamping die cavity section and a lower stamping die push handle channel, a lower stamping die cavity section is provided with a lower stamping module, the lower stamping module and the lower stamping die cavity section form an axial sliding connection with a circumferential limit, and the lower stamping die push handle channel is provided with a lower stamping die push handle connected to the bottom of the lower stamping module.

4. The metal coin stamping machine according to claim 3, characterized in that The cam is connected with the upper end of the push rod and the lower end of the push rod is connected with the push rod of the push rod, and the lower end of the push rod is connected with the upper end of the push rod.

5. The metal coin stamping machine according to claim 4, characterized in that The upper pressure rod is an ultrasonic horn, which is a tapered rod structure with a radial dimension gradually decreasing downwards. An ultrasonic transducer is arranged on the upper end of the upper pressure rod, and the ultrasonic transducer is electrically connected to an ultrasonic generator.

6. The metal coin stamping machine according to claim 1, characterized in that The feeding mechanism includes a feeding suction cup, and the feeding suction cup includes a feeding suction cup arm and a feeding suction cup head. The upper end of the feeding suction cup arm is drivingly connected to the feeding power cylinder, and the feeding suction cup head is provided on the lower end head of the feeding suction cup arm. The feeding suction cup head is connected to the air supply of the negative pressure control unit in the feeding suction cup arm, and the feeding suction cup head is arranged above the tail end outlet of the feeding channel, and the tail end outlet of the feeding channel is arranged above the feeding station, and a feeding door panel that rotates up and down to open and close is provided at the tail end outlet of the feeding channel, and the feeding door panel is connected to the tail end of the feeding channel by an elastic hinge, and a plurality of feeding power rollers are provided in the feeding channel, and the feeding power rollers are used to transport the blanks to the tail end outlet of the feeding channel, and the feeding suction cup head is used to pick up and unload the blanks, and the feeding power cylinder is used to drive the feeding suction cup to move up and down.

7. The metal coin stamping machine according to claim 6, characterized in that The feeding mechanism includes an upright feeding bin channel, a feeding port is provided at the upper end of the feeding bin channel, a plurality of blanks stacked up and down are provided in the feeding bin channel, a feeding power roller is provided on the opposite side of the lower end opening of the feeding bin channel, and the feeding power roller is used to transport the stacked blanks downward one by one to the feeding power roller in the head end of the feeding channel.

8. The metal coin stamping machine according to claim 1, characterized in that The unloading mechanism includes a unloading suction cup, and the unloading suction cup includes a unloading suction cup arm and a unloading suction cup head. The upper end of the unloading suction cup arm is transmission-connected to the unloading power cylinder, and the lower end head of the unloading suction cup arm is provided with the unloading suction cup head, and the unloading suction cup head is air-connected to the negative pressure control unit in the unloading suction cup arm, and the unloading suction cup head is arranged above the head end inlet of the unloading channel, and the head end inlet of the unloading channel is arranged above the unloading station, and a unloading door panel that rotates up and down to open and close is provided at the head end inlet of the unloading channel, and the unloading door panel is connected to the head end of the unloading channel by an elastic hinge, and a plurality of unloading power rollers are arranged in the unloading channel, and the unloading power rollers are used to output coins and stamps from the unloading channel, and the unloading suction cup head is used to pick up and unload coins and stamps, and the unloading power cylinder is used to drive the unloading suction cup to move up and down.

9. The metal coin stamping machine according to claim 8, characterized in that The discharging mechanism includes a pushing cam arranged on the opposite side of the head end of the feeding channel, and the wheel axle of the pushing cam is transmission-connected to the cam driving unit. The rotating pushing cam is used to push the coins and medals at the entrance of the head end of the feeding channel to the feeding power roller inside the head end of the feeding channel through the upward inclined guide wedge block.

10. The metal coin stamping machine according to claim 1, characterized in that The chassis is also provided with an embossing cavity lubrication mechanism, which includes a lifting drive unit, a rotation drive unit, a mechanism frame, and a lubricating component. The lubricating component includes a connecting rod, and a lubricating wiper is provided on the lower end of the connecting rod. The lifting drive unit is transmission-connected to the mechanism frame below through a mechanism frame push rod, and the corner end of the mechanism frame is connected to the mechanism guide column extending up and down to form a guiding sliding connection. The mechanism frame is connected to the lubricating component below, and the lifting drive unit is used to drive the lubricating component to move up and down. The upper end of the connecting rod is transmission-connected to the rotation drive unit, and the rotation drive unit is used to drive the lubricating wiper to rotate, and the lubricating wiper is used to apply grease to the side wall of the imprinting position in the imprinting cavity.

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