Automatic discharging and cutting system for precious metal sheets

Abstract

The utility model belongs to the technical field of precious metal processing equipment, and relates to an automatic discharging and cutting system for precious metal sheets, which comprises a paper roll unwinding machine, a sheet roll unwinding machine and a cutting machine which are sequentially arranged along the conveying direction, the paper roll unwinding machine comprises a rack, a paper roll discharging roller, a first motor and a guide roller, the paper roll discharging roller is in transmission connection with the first driving motor, the guide roller is installed on the downstream of the paper roll discharging roller through a support, the sheet roll unwinding machine comprises a sheet roll discharging roller and a driving mechanism, the driving mechanism is used for driving the sheet roll discharging roller to rotate, and the sheet roll discharging roller is driven by the driving mechanism to rotate. And the cutting machine is used for cutting the continuous sheet led out of the sheet roll. According to the automatic discharging and cutting system, through cooperative operation of the paper roll unwinding machine and the sheet roll unwinding machine, discharging of a paper roll and a sheet roll is achieved, cutting can be carried out only by pulling a material belt in the cutting process of the gold money, the manual discharging process is omitted, and working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of noble metal sheet automatic material cutting system, belong to noble metal processing equipment technical field. BACKGROUND

[0002] In noble metal processing industry, especially in the manufacturing process of high-end noble metal products such as gold banknotes and gold coins, the cutting of gold banknotes is an important link, that is, cutting gold foil strips into equal rectangular gold foil pieces. According to the traditional process, gold foil strips with a thickness of only 0.013 to 0.235 mm are laminated with paper strips, and then processed into equal rectangular gold foil pieces by a cutting machine. Since the gold foil is extremely thin and valuable, scratches or damage can easily occur on its surface due to mechanical contact. Therefore, paper strips are used to provide support, which can enhance the stability of the gold foil during cutting and facilitate the fixation and traction of the material strip.

[0003] However, in the prior art, the lamination and cutting process of gold foil and paper strip usually requires the cooperation of two operators: one manually unwinds the gold foil roll and paper roll at the feeding side of the cutting machine, and adjusts them to be accurately laminated and aligned; the other operator pulls the laminated material strip to the cutting station for processing at the discharge side. This operation mode has the following problems: first, manual lamination of the gold foil roll and paper roll is easily affected by human factors, such as the operator's proficiency and concentration. These factors can cause inaccurate lamination position, uneven lamination force, and other problems, which can affect the quality of subsequent cutting and the precision of the product; second, the production efficiency of the traditional cutting method is low; third, manual operation also has safety hazards. SUMMARY

[0004] The purpose of the present utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0005] The technical solution provided by the present utility model is as follows: a noble metal sheet automatic material cutting system, comprising a paper roll unwinder, a sheet roll unwinder and a cutting machine arranged in sequence along the conveying direction. The paper roll unwinder comprises a frame, a paper roll feeding roller, a first motor and a guide roller. The paper roll feeding roller, the guide roller and the first motor are all installed on the frame. The paper roll feeding roller is drivingly connected to the first motor. The guide roller is installed downstream of the paper roll feeding roller through a bracket. The sheet roll unwinder comprises a sheet roll feeding roller and a driving mechanism. The driving mechanism is used to drive the rotation of the sheet roll feeding roller. The cutting machine is used to cut the continuous sheet drawn out of the sheet roll.

[0006] Based on the above technical solution, the present utility model can also be improved as follows.

[0007] Further, the paper roll unwinder further comprises a sensor, the sensor emits a signal for detecting whether there is a suspended paper strip between the paper roll unwinding roller and the guide roller.

[0008] The beneficial effect of the above further scheme is that the sensor is used to detect whether the paper strip is broken, loose or out of paper, and when the sensor fails to detect the paper strip, the system will automatically stop to prevent the cutting caused by the lack of paper from damaging the gold foil sheet.

[0009] Further, the sensor is arranged below the suspended paper strip between the paper roll unwinding roller and the guide roller.

[0010] Further, the cutting machine comprises a cutting tool and a second driving motor, the second driving motor drives the cutting tool to move up and down to cut the sheet strip overlapped above the paper strip.

[0011] Further, a negative pressure dust collection device is further included, the negative pressure dust collection device comprises a dust suction port, a filter cartridge and a centrifugal fan; the dust suction port is arranged below the cutting tool and is used to collect the metal scraps generated in the cutting process.

[0012] The beneficial effect of the above further scheme is that the dust suction port is arranged below the cutting tool and is adjacent to the cutting area, which is used to collect the precious metal scraps and paper scraps generated in the cutting process in time to prevent them from scattering, the filter cartridge is used to filter and collect the precious metal scraps to prevent loss, and the centrifugal fan provides the necessary negative pressure suction.

[0013] Compared with the prior art, the technical scheme of the automatic unwinding and cutting system has the following beneficial effects: through the cooperative operation of the paper roll unwinder and the sheet roll unwinder, the automatic unwinding and cutting system realizes the unwinding of the paper roll and the sheet roll, and only needs to pull the material strip to cut the gold banknote during the cutting process, thereby reducing the manual unwinding process and improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description can also be obtained by the provided drawings without creative labor for the person skilled in the art.

[0015] Fig. 1 Fig. 1 is a perspective view of the automatic unwinding and cutting system of the present application;

[0016] Fig. 2 Fig. 2 is another perspective view of the automatic unwinding and cutting system of the present application; Fig. 3 is a schematic view of the automatic unwinding and cutting system of the present application.

[0017] Fig. 3 Figure 1 is a schematic diagram of the three-dimensional structure of the paper roll unwinder of the present application;

[0018] In the figure, 100, paper roll unwinder; 101, rack; 102, paper roll feeding roller; 103, first drive motor; 104, guide roller; 105, inductor; 200, sheet roll unwinder; 201, sheet roll feeding roller; 300, cutting machine; 301, cutting tool; 400, paper roll; 500, gold foil roll. DETAILED DESCRIPTION

[0019] The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects and do not imply any priority or specific technical meaning in terms of order. In addition, the "connection" and "coupling" concepts mentioned in this application are considered to include both direct connection (coupling) and indirect connection (coupling) unless otherwise specified.

[0020] When interpreting the description of this application, it should be clear that the orientation or position relationship indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the perspective and layout shown in the drawings, and are intended to facilitate description and simplify the description process, rather than an absolute limitation on the actual orientation, construction method and operation mode of the described device or element. Therefore, these terms should not be interpreted as a restrictive interpretation of the content of this application.

[0021] The principles and features of the present application are described below in conjunction with examples, which are used to explain the present application and not to limit the scope of the present application.

[0022] As shown in Figs. 1-3 The technical scheme provided by the present application is as follows: a noble metal sheet automatic feeding and cutting system, comprising a paper roll unwinder 100, a sheet roll unwinder 200 and a cutting machine 300 arranged in sequence along the conveying direction, the paper roll unwinder 100 comprises a rack 101, a paper roll feeding roller 102, a first drive motor 103 and a guide roller 104, the paper roll feeding roller 102 and the guide roller 104 are both mounted on the rack 101, the paper roll feeding roller 102 is in transmission connection with the first drive motor 103, the first drive motor 103 can drive the paper roll feeding roller 102 to rotate, the guide roller 104 is installed downstream of the paper roll feeding roller 102 through a support, the sheet roll unwinder 200 comprises a sheet roll feeding roller 201 and a driving mechanism, the driving mechanism is used to drive the sheet roll feeding roller 201 to rotate, and the cutting machine 300 is used to cut the continuous sheet led out of the sheet roll.

[0023] The paper roll unwinder 100 further comprises a sensor 105, which is an infrared sensor in this embodiment, emitting infrared signals for detecting whether there is a suspended paper strip between the detection paper roll feed roller 102 and the guide roller 104. More specifically, the sensor 105 is arranged below the suspended paper strip between the paper roll feed roller 102 and the guide roller 104 for detecting whether the paper strip is broken, loose or out of paper, and the sensor 105 is electrically connected with the control system to trigger a shutdown protection to prevent the cutting of the out-of-paper gold foil from causing damage to the gold foil.

[0024] The cutting machine 300 comprises a cutting tool and a second driving motor (not shown in the figure), which drives the cutting tool to move up and down to cut the thin strip stacked above the paper strip.

[0025] The automatic feed cutting system further comprises a negative pressure dust collection device (not shown in the figure), which comprises a dust collection port, a filter cartridge and a centrifugal fan; the dust collection port is arranged below the cutting tool for collecting metal scraps generated during the cutting process. The dust collection port is arranged below the cutting tool and adjacent to the cutting area for timely collecting the precious metal scraps and paper scraps generated during the cutting process to prevent them from scattering, the filter cartridge is used for filtering and collecting the precious metal scraps, and the centrifugal fan provides the necessary negative pressure suction.

[0026] The method for cutting the gold foil by the automatic feed cutting system of the utility model is as follows:

[0027] Firstly, the prepared paper roll 400 is installed on the paper roll feed roller 102, the paper strip is led out from the paper roll 400, then the paper strip is led around the guide roller 104, the paper strip is led into the cutting machine 300 from the feeding side of the cutting machine 300, then passes through the cutting area, and finally is led out from the discharging side of the cutting machine 300.

[0028] Next, the gold foil roll 500 is installed on the thin strip roll feed roller 201, and the gold foil in the gold foil roll 500 is the target material to be cut. The gold foil led out from the gold foil roll 500 is above the paper strip and can be stacked on the upper part of the paper strip by gravity, and the gold foil can enter the cutting area more stably by the support of the paper strip. Similarly, the gold foil is also led into the cutting machine 300 from the feeding side and finally led out from the discharging side.

[0029] After confirming that the paths of the paper tape and the gold foil are correctly set, the paper roll unwinder 100, the sheet roll unwinder 200 and the cutting machine 300 are started, and the superimposed material tape (i.e. the combination of the paper tape and the gold foil) is pulled from the discharge side of the cutting machine 300. When the superimposed material tape passes through the cutting area, the cutting machine 300 cuts the gold foil, and the cutting machine 300 continuously cuts the gold foil according to preset parameters (such as the size of a rectangle), and a series of rectangular gold foils of the same size are generated, and the gold foils are output from the discharge side of the cutting machine 300 together with the paper tape.

[0030] The automatic material unwinding and cutting system of the utility model realizes the unwinding of the paper roll 400 and the sheet roll through the cooperative operation of the paper roll unwinder 100 and the sheet roll unwinder 200, and only needs to pull the material tape to cut the gold foil during the cutting process, so that the manual unwinding process is reduced, and the work efficiency is improved.

[0031] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic feed cutting system for thin sheets of precious metal, characterized in that, The application relates to a paper roll unwinding machine (100), a sheet roll unwinding machine (200) and a cutting machine (300) arranged in sequence along a conveying direction, the paper roll unwinding machine (100) comprising a rack (101), a paper roll feed roller (102), a first driving motor (103) and a guide roller (104), the paper roll feed roller (102), the guide roller (104) and the first driving motor (103) being mounted on the rack (101), the paper roll feed roller (102) being in transmission connection with the first driving motor (103), the guide roller (104) being mounted on the paper roll feed roller (102) downstream through a support, the sheet roll unwinding machine (200) comprising a sheet roll feed roller (201) and a driving mechanism, the driving mechanism being used for driving the sheet roll feed roller (201) to rotate, and the cutting machine (300) being used for cutting continuous sheets drawn from a sheet roll.

2. The automatic feed and cut system for precious metal sheet as claimed in claim 1, wherein, The paper roll unwinding machine (100) further comprises an inductor (105), the inductor (105) emitting a signal for detecting whether there is a suspended paper strip between the paper roll feed roller (102) and the guide roller (104).

3. The automatic feed and cut system for precious metal sheeting of claim 2, wherein, The inductor (105) is arranged below the suspended paper strip between the paper roll feed roller (102) and the guide roller (104).

4. The automatic feed and cut system for precious metal sheet as claimed in claim 1, wherein, The cutting machine (300) comprises a cutting tool and a second driving motor, the second driving motor driving the cutting tool to move up and down to cut sheet strips overlapped above the paper strip.

5. The automatic feed and cut system for precious metal sheet as claimed in claim 4, wherein, The application further comprises a negative pressure dust collection device, the negative pressure dust collection device comprising a dust collection port, a filter cartridge and a centrifugal fan, the dust collection port being arranged below the cutting tool and being used for collecting metal scraps generated in the cutting process. The application further comprises a negative pressure dust collection device, the negative pressure dust collection device comprising a dust collection port, a filter cartridge and a centrifugal fan; the dust collection port is arranged below the cutting tool and is used for collecting metal scraps generated in the cutting process.

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