Ink adding device of marking machine

Abstract

The utility model discloses an ink adding device of a marking machine, which comprises a control module, an output of the control module is connected with a normally open contact of a relay, the relay is connected with a motor of a diaphragm pump, ink is stored in an ink pot, the ink pot is connected with an input port of the diaphragm pump through an oil pipe, and an output port of the diaphragm pump is connected with an ink box through an oil pipe. A pressure switch unit is arranged on the oil pipe, is connected with the control module, reads the pressure value of the printing ink in real time, outputs an analog quantity signal to the control module, performs analog-to-digital conversion by the control module and sets a numerical range, and outputs a signal to the relay within the numerical range; a relay pull-in power supply is connected with a diaphragm pump motor, and a diaphragm pump is started to pump ink in the ink pot to supply ink to the ink box. The printing ink supply device has the advantages that the printing ink supply is accurately controlled, and the marking definition is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of marking machines, in particular to an ink adding device for a marking machine. Background Art

[0002] At present, the numbering machine uses an ink storage device to supply ink, which continuously supplies ink to the numbering head to ensure that the printed number is clear and bright. The ink storage device supplies the numbering head through its internal space, but after the ink storage device is used for a period of time, the ink will gradually decrease until it is consumed. It is necessary to manually stop the machine, remove the ink storage device and replace it with a new one. Manual ink addition requires gloves to operate, which is very inconvenient. This ink replacement method also requires workers to observe whether the printed number is clear. This is where the application needs to focus on improvement. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an ink adding device for a marking machine, which can accurately control the supply of ink and improve the clarity of marking.

[0004] In order to solve the above technical problems, the utility model provides an ink adding device for a marking machine, including a control module, the output of the control module is connected to the normally open point of a relay, the relay is connected to a diaphragm pump motor, ink is stored in an ink pot, the ink pot is connected to the input port of the diaphragm pump through an oil pipe, the output port of the diaphragm pump is connected to an ink cartridge through an oil pipe, a pressure switch unit is installed on the oil pipe, the pressure switch unit is connected to the control module, the pressure switch unit reads the pressure value of the ink in real time, the pressure switch unit outputs an analog signal to the control module, the control module performs analog-to-digital conversion and sets a numerical range, within the numerical range, the control module outputs a signal to the relay, the relay attracts the power supply to turn on the diaphragm pump motor, and the diaphragm pump is started to extract ink from the ink pot to replenish the ink cartridge.

[0005] The motor of the diaphragm pump drives the pump shaft to rotate, and the connecting rod pushes the diaphragm in the diaphragm chamber to make reciprocating motion. The inlet and outlet of the diaphragm pump generate a pressure difference. When the diaphragm moves forward, the inlet of the diaphragm pump is closed and the outlet is opened, and the ink is pushed out; when the diaphragm moves backward, the inlet of the diaphragm pump is opened and the outlet is closed, and the ink is sucked in. The diaphragm pump is a low-flow and high-precision diaphragm pump, and the impeller will not be stuck by ink.

[0006] The return pipe from the ink cartridge is connected to the oil pipe output from the ink pot, and a pressure relief valve and a one-way valve are installed on the return pipe. When the pressure value of the ink is higher than the pressure value of the pressure relief valve, the pressure relief valve opens, and the ink flows back to the ink pot through the one-way valve.

[0007] The ink pressure value read by the pressure switch unit exceeds the set maximum value and exceeds the set value range of the control module. The control module disconnects the output, the relay is disconnected, the power supply of the diaphragm pump motor is cut off, and the diaphragm pump stops working.

[0008] The ink pot is placed in an ink pot box, and the ink pot box is connected to the column of the marking machine via a fixing plate.

[0009] The superior effects of the utility model are:

[0010] 1) The high-precision pressure switch unit reads the ink pressure value in real time, uses the read pressure value to control the operation of the diaphragm pump, and accurately controls the ink supply to achieve constant ink cartridge pressure, thereby improving the clarity of the number printing and making it uniform;

[0011] 2) Reflux the overflowed ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0013] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model;

[0014] Description of the symbols in the figure

[0015] 1-Ink cartridge; 2-Diaphragm pump;

[0016] 3—Oil pipe A; 4—Ink pot box fixing plate;

[0017] 5—Ink pot box; 6—Ink pot;

[0018] 7—numbering machine; 8—check valve;

[0019] 9—pressure relief valve; 10—pressure switch;

[0020] 11—Return pipe; 12—Oil pipe B. DETAILED DESCRIPTION

[0021] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0022] The utility model provides an ink adding device for a marking machine, comprising a control module, wherein the output of the control module is connected to a normally open point of a relay, the relay is connected to a diaphragm pump motor, ink is stored in an ink pot 6, the ink pot 6 is connected to an input port of a diaphragm pump 2 through an oil pipe A3, the output port of the diaphragm pump 2 is connected to an ink cartridge 1 through an oil pipe B12, a return pipe 11 led out of the ink cartridge 1 is connected to the oil pipe A3, a pressure switch 10 is mounted on the return pipe 11, the pressure switch 10 is connected to the control module by wire or wirelessly, the pressure switch 10 reads the pressure value of the ink in real time, the pressure switch 10 outputs an analog signal to the control module, the control module performs analog-to-digital conversion and sets a numerical range, within the numerical range, the control module outputs a signal to the relay, the relay pulls in a power source to connect the diaphragm pump motor, and the diaphragm pump 2 is started to extract ink from the ink pot 6 to replenish the ink cartridge 1.

[0023] The diaphragm pump motor drives the pump shaft to rotate, and the connecting rod pushes the diaphragm in the diaphragm chamber to make reciprocating motion, resulting in a pressure difference between the inlet and outlet of the diaphragm pump 2. When the diaphragm moves forward, the inlet of the diaphragm pump 2 is closed and the outlet is opened, and the ink is pushed out; when the diaphragm moves backward, the inlet of the diaphragm pump 2 is opened and the outlet is closed, and the ink is sucked in. The ink pre-stored in the ink pot 6 is sucked into the diaphragm pump 2 through the oil pipe A3, and the ink at the outlet of the diaphragm pump 2 reaches the ink cartridge 1 through the oil pipe B12. The ink is transported by a low-flow and high-precision diaphragm pump 2, and the impeller will not be stuck by the ink.

[0024] The reflux pipe 11 is provided with a pressure relief valve 9 and a one-way valve 8. When the pressure switch 10 fails or the relay fails, causing the diaphragm pump to keep working, the pressure value of the ink is higher than the pressure value of the pressure relief valve 9. The pressure relief valve 9 is opened, and the ink flows back to the ink pot 6 through the one-way valve 8.

[0025] The ink pressure value read by the pressure switch 10 exceeds the set maximum value and the set value range of the control module. The control module disconnects the output, the relay is disconnected, the power supply of the diaphragm pump motor is cut off, and the diaphragm pump 2 stops working.

[0026] The ink pot 6 is placed in the ink pot box 5 and fixed therein, and the ink pot box 5 is connected to the column of the marking machine 7 via the ink pot box fixing plate 4 .

[0027] The control module is a programmable controller FP-XH.

[0028] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An ink adding device for a marking machine, characterized in that: It includes a control module, the output of the control module is connected to the normally open point of the relay, the relay is connected to the diaphragm pump motor, the ink is stored in the ink pot, the ink pot is connected to the input port of the diaphragm pump through the oil pipe, the output port of the diaphragm pump is connected to the ink cartridge through the oil pipe, a pressure switch unit is installed on the oil pipe, the pressure switch unit is connected to the control module, the pressure switch unit reads the pressure value of the ink in real time, the pressure switch unit outputs an analog signal to the control module, the control module performs analog-to-digital conversion and sets a numerical range, within the numerical range, the control module outputs a signal to the relay, the relay attracts the power supply to turn on the diaphragm pump motor, and the diaphragm pump is started to extract ink from the ink pot to replenish the ink cartridge.

2. The ink adding device for a marking machine according to claim 1, characterized in that: The diaphragm pump motor drives the pump shaft to rotate, and the connecting rod pushes the diaphragm in the diaphragm chamber to make reciprocating motion, and a pressure difference is generated at the inlet and outlet of the diaphragm pump. When the diaphragm moves forward, the inlet of the diaphragm pump is closed and the outlet is opened, and the ink is pushed out; when the diaphragm moves backward, the inlet of the diaphragm pump is opened and the outlet is closed, and the ink is sucked in.

3. The ink adding device for a marking machine according to claim 1, characterized in that: The return pipe leading out of the ink cartridge is connected to the oil pipe outputted from the ink pot. A pressure relief valve and a one-way valve are installed on the return pipe. When the pressure value of the ink is higher than the pressure value of the pressure relief valve, the pressure relief valve opens and the ink flows back into the ink pot through the one-way valve.

4. The ink adding device for a marking machine according to claim 1, characterized in that: When the ink pressure value read by the pressure switch unit exceeds the set maximum value and the set value range of the control module, the control module disconnects the output, the relay disconnects, the power supply of the diaphragm pump motor is cut off, and the diaphragm pump stops working.

5. The ink adding device for a marking machine according to claim 1, characterized in that: The ink pot is placed in an ink pot box, and the ink pot box is connected to the column of the marking machine via a fixing plate.

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