Double-injection-pump switching coating device and coating machine

Abstract

The utility model belongs to the technical field of coating machines, and relates to a double-injection-pump switching coating device and a coating machine. The double-injection-pump switching coating device comprises a solution tank, a three-way valve, a first injection pump, a second injection pump, a first liquid supply pipe, a second liquid supply pipe and a liquid supply pipeline, one end of the first liquid supply pipe and one end of the second liquid supply pipe are communicated with the solution tank, the other end of the first liquid supply pipe and the other end of the second liquid supply pipe are communicated with the three-way valve, the first injection pump is arranged on the first liquid supply pipe, and the second injection pump is arranged on the second liquid supply pipe. The first injection pump is arranged on the first liquid supply pipe, the second injection pump is arranged on the second liquid supply pipe, the liquid supply pipeline is respectively communicated with the three-way valve and the coating die head, a first liquid outlet valve is arranged on the first liquid supply pipe between the first injection pump and the three-way valve, and a second liquid outlet valve is arranged on the second liquid supply pipe between the second injection pump and the three-way valve. The first injection pump and the second injection pump suck the coating solution from the solution tank through the first liquid supply pipe and the second liquid supply pipe respectively and then alternately provide the coating solution into the coating die head, so that the coating die head can continuously carry out coating operation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of coating machine, especially related to a double injection pump switching coating device and coating machine. BACKGROUND

[0002] Coating machine has become a very important tool in each field, has got the extensive application in the field such as packaging, printing, electronic industry, medical material, industrial production.Combination single injection pump is configured to the inside supply liquid to coating die when coating machine, when injection pump vomits liquid, needs time to fill up again, like this, injection pump needs to stop, after injection pump cavity fills up coating liquid, can continue to work, makes the efficiency of coating machine coating low. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a double injection pump switching coating device and coating machine, and the double injection pump is switched in cooperation, and coating solution is provided to coating die without interruption, and the coating efficiency of coating machine is improved.

[0004] The utility model is realized in this way, provide a double injection pump switching coating device, include: solution tank, three -way valve, first injection pump, second injection pump, first liquid supply pipe, second liquid supply pipe and liquid supply pipeline, and one end of first liquid supply pipe and second liquid supply pipe is communicated with solution tank respectively, and the other end is connected with three -way valve respectively, and first injection pump is arranged on first liquid supply pipe, and second injection pump is arranged on second liquid supply pipe, and one end of liquid supply pipeline is communicated with three -way valve, and the other end is communicated with coating die, and first liquid valve is arranged on the first liquid supply pipe between first injection pump and three -way valve, and second liquid valve is arranged on the second liquid supply pipe between second injection pump and three -way valve.

[0005] Further, a first liquid inlet valve is arranged on the first liquid supply pipe between the first injection pump and the solution tank, and a second liquid inlet valve is arranged on the second liquid supply pipe between the second injection pump and the solution tank.

[0006] Further, a liquid return pipeline is arranged between the solution tank and the coating die.

[0007] Further, a first exhaust pipe is arranged on the first injection pump and communicated with the solution tank, and a first exhaust valve is arranged on the first exhaust pipe.

[0008] Further, a second exhaust pipe is arranged on the second injection pump and communicated with the solution tank, and a second exhaust valve is arranged on the second exhaust pipe.

[0009] Further, the first injection pump includes a first sample injector and a first piston rod, and the second injection pump includes a second sample injector and a second piston rod.

[0010] Further, control assemblies are arranged on the first piston rod and the second piston rod respectively, and each control assembly comprises a motor, a shaft coupling, a lead screw, a lead screw nut, a connecting piece and a bearing seat, the motor is connected with the lead screw through the shaft coupling, two bearing seats are arranged at two ends of the lead screw respectively, one end of the connecting piece is connected with the lead screw through the lead screw nut, and the first piston rod and the second piston rod are connected with the other end of the corresponding connecting piece respectively.

[0011] The utility model discloses a coating machine, including coating machine body, install the double injection pump switching coating device as described before on the coating machine body.

[0012] Compared with the prior art, the utility model discloses a double injection pump switching coating device and coating machine, the double injection pump switching coating device includes solution tank, three -way valve, first injection pump, second injection pump, first liquid supply pipe, second liquid supply pipe and liquid supply pipeline, and first injection pump, second injection pump draws coating solution from solution tank through first liquid supply pipe, second liquid supply pipe respectively, and the double injection pump cooperates switching operation, and alternately provides coating solution to coating die head, so that coating die head can not discontinuously coating operation, improves the coating efficiency of coating machine. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the three -dimensional schematic view that the double injection pump switching coating device of the utility model is installed on the coating machine;

[0014] Figure 2 It is Figure 1 The front view of.

[0015] The identification in the drawing is respectively: 1, solution tank;2, three -way valve;3, first injection pump;4, second injection pump;5, first liquid supply pipe;6, second liquid supply pipe;7, liquid supply pipeline;8, first liquid outlet valve;9, second liquid outlet valve;10, first liquid inlet valve;11, second liquid inlet valve;12, liquid return pipeline;13, first exhaust pipe;14, second exhaust pipe;15, first exhaust valve;16, second exhaust valve;17, first sample feeder;18, first piston rod;19, second sample feeder;20, second piston rod;21, shaft coupling;22, lead screw;23, lead screw nut;24, connecting piece;25, motor;26, bearing seat;27, liquid return valve;

[0016] A, coating die head;B, support frame. DETAILED DESCRIPTION

[0017] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clearly clear, the following is combined with the drawing and example, and the utility model is further detailedly explained.It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0018] Please refer to Figure 1 and Figure 2 The preferred embodiment of the double-injection-pump switching coating device is shown in the drawings, comprising: a solution tank 1, a three-way valve 2, a first injection pump 3, a second injection pump 4, a first liquid supply pipe 5, a second liquid supply pipe 6, and a liquid supply pipeline 7.

[0019] One end of the first liquid supply pipe 5 and the second liquid supply pipe 6 is communicated with the solution tank 1, and the other end is communicated with the three-way valve 2. The first injection pump 3 is arranged on the first liquid supply pipe 5, and the second injection pump 4 is arranged on the second liquid supply pipe 6. One end of the liquid supply pipeline 7 is communicated with the three-way valve 2, and the other end is communicated with the coating die head A. A first liquid outlet valve 8 is arranged on the first liquid supply pipe 5 between the first injection pump 3 and the three-way valve 2, and a second liquid outlet valve 9 is arranged on the second liquid supply pipe 6 between the second injection pump 4 and the three-way valve 2.

[0020] When the first injection pump 3 is used to provide coating solution to the coating die head A, the first liquid outlet valve 8 is opened, the second liquid outlet valve 9 is closed, and the coating solution in the solution tank 1 enters the coating die head A in sequence through the first liquid supply pipe 5, the three-way valve 2, and the liquid supply pipeline 7. At this time, the coating solution fills the second injection pump 4 to prepare for switching work. When the second injection pump 4 is used to provide coating solution to the coating die head A, the second liquid outlet valve 9 is switched to be opened, and the first liquid outlet valve 8 is switched to be closed. The coating solution in the solution tank 1 enters the coating die head A in sequence through the second liquid supply pipe 6, the three-way valve 2, and the liquid supply pipeline 7. At this time, the coating solution fills the first injection pump 3 to prepare for the next switching cycle. The first injection pump 3 and the second injection pump 4 cooperate to switch work alternately to provide coating solution in the coating die head through the liquid supply pipeline, so that the coating die head can continuously perform coating work.

[0021] In this embodiment, the solution tank 1, the first injection pump 3, and the second injection pump 4 are arranged on the support frame B of the coating die head A.

[0022] A first liquid inlet valve 10 is arranged on the first liquid supply pipe 5 between the first injection pump 3 and the solution tank 1, and a second liquid inlet valve 11 is arranged on the second liquid supply pipe 6 between the second injection pump 4 and the solution tank 1. When the first liquid inlet valve 10 is opened, the first injection pump 3 can suck the coating solution from the solution tank 1, and when the first liquid inlet valve 10 is closed, the first injection pump 3 cannot suck the coating solution from the solution tank 1. Similarly, when the second liquid inlet valve 11 is opened, the second injection pump 4 can suck the coating solution from the solution tank 1, and when the second liquid inlet valve 11 is closed, the second injection pump 4 cannot suck the coating solution from the solution tank 1.

[0023] A return pipe 12 is provided between the solution tank 1 and the coating die A. Excess coating solution in the coating die A flows back to the solution tank 1 through the return pipe 12. A return valve 27 is provided in the return pipe 12.

[0024] A first vent pipe 13 is provided on the first injection pump 3 and connected to the solution tank 1. A first vent valve 15 is provided on the first vent pipe 13. The gas-liquid mixture in the first injection pump 3 enters the solution tank 1 through the first vent pipe 13 and is utilized. The first vent valve 15 controls the opening and closing of the first vent pipe 13.

[0025] A second vent pipe 14 is provided on the second injection pump 4 and connected to the solution tank 1. A second vent valve 16 is provided on the second vent pipe 14. The gas-liquid mixture in the second injection pump 4 enters the solution tank 1 through the second vent pipe 14 and is utilized. The second vent valve 16 controls the opening and closing of the second vent pipe 14.

[0026] The gas mixed in the coating solution is discharged through the first exhaust pipe 13 and the second exhaust pipe 14, respectively.

[0027] The first injection pump 3 includes a first injector 17 and a first piston rod 18, and the second injection pump 4 includes a second injector 19 and a second piston rod 20. A piston (not shown in the figure) is respectively disposed within the first injector 17 and the second injector 19. The first piston rod 18 and the second piston rod 20 respectively drive the corresponding piston to move up and down within the first injector 17 and the second injector 19, thereby achieving the suction and discharge of the coating solution.

[0028] Control components are respectively installed on the first piston rod 18 and the second piston rod 20. Each control component includes a motor 25, a coupling 21, a lead screw 22, a lead screw nut 23, a connecting member 24, and a bearing seat 26. The motor 25 is connected to the lead screw 22 via the coupling 21. Two bearing seats 26 are respectively located at both ends of the lead screw 22. One end of the connecting member 24 is connected to the lead screw 22 via the lead screw nut 23. The first piston rod 18 and the second piston rod 20 are respectively connected to the other end of their respective connecting members 24.

[0029] Corresponding control components are provided on the first piston rod 18 and the second piston rod 20 to drive the first piston rod 18 and the second piston rod 20 to move up and down, thereby controlling the operation of the first injection pump 3 and the second injection pump 4.

[0030] The working principle of the double-injection-pump switching coating device is as follows: before the coating die A starts to work, the first injection pump 3 starts to draw solution from the solution tank 1, at this time, the first exhaust valve 15 and the first liquid outlet valve 8 are closed, and the first liquid inlet valve 10 is opened; after the first injection pump 3 is filled with coating solution, the first liquid inlet valve 10 is closed, and the first injection pump 3 is ready.

[0031] The first injection pump 3 starts to work, at this time, the first exhaust valve 15 and the first liquid inlet valve 10 and the second liquid outlet valve 9 are closed, and the first liquid outlet valve 8 is opened; the motor 25 of the corresponding control assembly is rotated to drive the screw rod 22 to rotate, so that the first piston rod 18 moves upwards, and the first injection pump 3 supplies liquid to the coating die A. When the first injection pump 3 finishes supplying liquid, the second injection pump 4 is switched to work. At this time, the first liquid outlet valve 8, the first exhaust valve 15, the second exhaust valve 16 and the second liquid inlet valve 11 are closed, and the second liquid outlet valve 9 is opened; the motor 25 of the corresponding another control assembly is rotated to drive the screw rod 22 to rotate, so that the second piston rod 20 moves upwards, and the second injection pump 4 supplies liquid to the coating die A. At the same time, the first liquid inlet valve 10 is opened, the motor 25 is rotated to drive the screw rod 22 to rotate, so that the first piston rod 18 moves downwards, and the first injection pump 3 sucks liquid. After the first injection pump 3 is filled with solution, it is in a quasi-liquid injection state. When the second injection pump 4 finishes supplying liquid, the first injection pump 3 is switched to continue supplying liquid. At the same time, the second injection pump 4 starts to suck liquid, and is in a quasi-liquid injection state after the sucking is completed. The above steps are sequentially repeated. The first injection pump 3 and the second injection pump 4 are alternately used to supply liquid to the coating die A, so that the coating die A can work continuously.

[0032] The utility model discloses still disclose a coating machine, including coating machine body, be installed on coating machine body like preceding described double-injection-pump switching coating device, as Figure 1 And Figure 2 As shown.

[0033] The above only is the preferred embodiment of the utility model, and does not use to limit the utility model, and any modification, equivalent replacement and improvement etc. that are made within the spirit and principle of the utility model should include in the protection scope of the utility model.

Claims

1. A dual syringe pump switching coating apparatus characterized by, The application relates to a double-injection-pump switching coating device. A first liquid inlet valve (10) is arranged on the first liquid supply pipe (5) between the first injection pump (3) and the solution tank (1), and a second liquid inlet valve (11) is arranged on the second liquid supply pipe (6) between the second injection pump (4) and the solution tank (1).

2. A dual injection pump switching coating apparatus according to claim 1, wherein A liquid return pipe (12) is arranged between the solution tank (1) and the coating die (A).

3. A dual injection pump switching coating apparatus according to claim 1, wherein A first exhaust pipe (13) is arranged on the first injection pump (3) and is communicated with the solution tank (1), and a first exhaust valve (15) is arranged on the first exhaust pipe (13).

4. The dual injection pump switching coating apparatus of claim 1, wherein, A second exhaust pipe (14) is arranged on the second injection pump (4) and is communicated with the solution tank (1), and a second exhaust valve (16) is arranged on the second exhaust pipe (14).

5. A dual injection pump switching coating apparatus according to claim 1, wherein The first injection pump (3) comprises a first sample feeder (17) and a first piston rod (18), and the second injection pump (4) comprises a second sample feeder (19) and a second piston rod (20).

6. A dual injection pump switching coating apparatus according to claim 1, wherein Control assemblies are arranged on the first piston rod (18) and the second piston rod (20) respectively, and each control assembly comprises a motor (25), a coupling (21), a lead screw (22), a lead screw nut (23), a connecting piece (24) and a bearing seat (26). The motor (25) is connected with the lead screw (22) through the coupling (21), two bearing seats (26) are arranged at two ends of the lead screw (22) respectively, one end of the connecting piece (24) is connected with the lead screw (22) through the lead screw nut (23), and the first piston rod (18) and the second piston rod (20) are connected with the other end of the corresponding connecting piece (24) respectively.

7. A dual injection pump switching coating apparatus as claimed in claim 6, wherein The coating machine body is provided with the double-injection-pump switching coating device as claimed in any one of claims 1-7.

8. A coater comprising a coater body, characterized by ​

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