JP2545679B2 - High viscosity ink pump - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-viscosity ink pump for pumping high-viscosity ink such as printing ink.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 9A, a high viscosity fluid pump for pumping a high viscosity fluid such as printing ink has a base 50 and a base 50. From the pump main body 52 that moves up and down, the pipe portion 54 that is attached to the lower portion of the pump main body 52 and has the suction port 54a for sucking the high-viscosity fluid, and the inductor plate 56 that is attached around the pipe portion 54. It is roughly configured. The inductor plate 56 is composed of a main body plate 56a fixed to the pipe portion 54, and a lip seal 56b attached to the outer peripheral portion of the main body plate 56a. The lip seal 56b is in close contact with the inner wall surface of the container 60 in which the high-viscosity fluid 58 is contained, seals the upper surface of the container 60, and presses the fluid 58 downward, so It is designed to assist the inhalation operation.

The operation of the conventional pump for high-viscosity fluid configured as described above will be described. First, as shown in FIG. 9A, a container 60 containing a high-viscosity fluid 58 is placed below the pump body 52. From this state, the pump body 5
2 is lowered with respect to the base 50, as shown in FIG.
6 enters the container 60. At this time, since the lip seal 56b of the inductor plate 56 comes into close contact with the inner wall surface of the container 60, the container 60 is in a sealed state. When the pump body 52 is further lowered in this state, the air 62 located between the lower surface of the inductor plate 56 and the surface of the high-viscosity fluid 58 is compressed and becomes a resistance, and the pump body 52 is smoothly lowered. I can't let you do it. Further, the inductor plate 56 cannot be brought into close contact with the surface of the fluid 58. Therefore, by opening the valve 56c arranged on the inductor plate 56,
While lowering the pump body 52, the air 62 between the lower surface of the inductor plate 56 and the surface of the fluid 58 is removed from the container 60.
Exhaust to the outside. As a result, the inductor plate 56 is brought into close contact with the fluid surface as shown in FIG. 9C. Then, by closing the valve 56c again, the fluid 58 can be pumped.

In this state, when the suction operation of the pump main body 52 is started while further lowering the pump main body 52, the fluid 58 is sucked from the suction port 54a located at the lower end of the pipe portion 54 to transfer the fluid to a printing machine or the like. Send by pressure. At this time, the fluid 58 is pressed by the inductor plate 56, so that the fluid 58 is easily sucked into the pump body 52.

When the suction operation by this pump is continued, all the fluid 58 in the container 60 is sucked out, and the inductor plate 56 is, as shown in FIG.
Stick to the bottom of the. From this state, empty container 60
In order to replace the valve with a new container, the pump main body 52 is raised and the inductor plate 56 is pulled out upward from the container 60. At that time, if the valve 56c is closed, a negative pressure is generated in the container 60. As a result, the inductor plate 56 cannot be pulled out from the container 60. Therefore, the valve 56 is provided so that the inductor plate 56 can be easily pulled out from the container 60.
Open the valve c and let compressed air flow from the valve 56c to the container 60.
Send in. As a result, the inductor plate 56
Is pushed by the pressure of the compressed air and pulled out of the container 60, resulting in the state shown in FIG. 9 (e).

[0006]

However, in the above-mentioned conventional example, when the inductor plate 56 is pulled out above the container 60 from the state shown in FIG. 9D, the inductor plate 56 is pulled out from the upper end of the container 60. The compressed air in the container 60 blows out to the outside of the container 60 at the moment of discharging, and together with this compressed air, the fluid (for example, printing ink) 58 slightly remaining in the container 60 scatters to the outside of the container 60. There was a problem that the area around the pump was stained.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to prevent ink from splashing outside when the inductor plate is pulled out of the ink container. To provide a pump for viscous ink.

[0008]

In order to solve the above problems and to achieve the object, a high viscosity ink pump of the present invention is provided with a base and a movable up and down with respect to the base. A pump body having a pipe-shaped suction portion for sucking high-viscosity ink at a lower end, an outer peripheral portion of the suction portion disposed around the suction portion, and an inner wall surface of a container containing the high-viscosity ink. In a high-viscosity ink pump including an inductor plate that seals between the inductor plate, the inductor plate includes a plate-shaped main body plate fixed around the suction portion, and upper and lower parts attached to the lower surface of the main body plate. An elastic member that can expand and contract in the direction, spreads in the horizontal plane as it contracts in the vertical direction, and adheres to the inner wall surface of the container, contracts in the horizontal plane as it extends in the vertical direction, and separates from the inner wall surface of the container. And sex member is disposed at the lower end of the elastic member, is characterized in that it comprises a weight for retaining the elastic member in a state of extending in the vertical direction in a natural state.

Further, in the high-viscosity ink pump according to the present invention, the elastic member is made of rubber.

[0010]

As described above, since the high-viscosity ink pump according to the present invention is constructed, the elastic member is vertically extended by the weight when the inductor plate is inserted into the ink container and when the inductor plate is pulled out from the ink container. Therefore, since the elastic member shrinks in the horizontal plane and separates from the inner wall surface of the ink container, without exhausting air between the inductor plate and the ink surface or blowing air between the inductor plate and the ink surface, The inductor plate can be easily inserted into and removed from the container. Therefore, it is possible to prevent the ink from scattering outside the container. Further, when the weight comes into contact with the ink surface, the weight is pushed upward and the elastic member contracts in the vertical direction, and this elastic member spreads in the horizontal plane. The ink container can be brought into close contact with the wall surface and sealed. As a result, the same ink suction operation as in the conventional case is possible.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a side view showing the overall construction of a high-viscosity ink pump of one embodiment. In FIG. 1, the base 10 is placed on the floor surface of a printing factory or the like. On the base 10, a column 12 as a guide for raising and lowering a pump body 18 described later is arranged upright with respect to the base 10. An elevating member 14 is provided above the column 12.
Is arranged so as to be slidable in the vertical direction with respect to the column 12. The air cylinder body 16 is provided on the upper surface of the base 10.
Is provided, and the tip end portion of the piston rod 16 a is connected to the elevating member 14. Therefore, when the piston rod 16a is pushed out of the air cylinder body 16 and retracted, the lifting member 14 is
It is moved up and down along the column 12.

A pump main body 18 is attached to the elevating member 14 so as to move vertically along the support column 12 together with the elevating member 14. Below the pump body 18, a pipe-shaped suction part 20 having a suction port 20a for sucking high-viscosity ink such as printing ink.
Is connected. An inductor plate 22 for pressing high viscosity ink is attached to the lower end of the suction portion 20. The inductor plate 22 is used for the suction part 20.
Body plate 24 fixed to the body plate 2
The elastic member 26 is attached to the lower surface of the elastic member 4, and the weight 28 is attached to the lower portion of the elastic member 26.

Below the inductor plate 22, an ink container 30 containing high-viscosity ink is arranged. The elevating member 14 is lowered by the air cylinder 16, the pump body 18 is lowered, and the inductor plate 22 portion enters the ink container 30 and the pump body 1
When 8 operates, the ink in the container 30 is pressure-fed to a printing machine or the like.

Next, FIG. 2 is an enlarged side sectional view showing the portion A in FIG. The structure of the inductor plate 22 will be described with reference to FIG.

In FIG. 2, the flat plate-shaped main body plate 24 constituting the upper portion of the inductor plate 22 is fixed to the suction portion 20 as described above. An elastic member 26 made of rubber is attached to the lower surface of the body plate 24. The elastic member 26 is formed in a donut shape having a through hole 32 formed in the center thereof. In addition, the elastic member 26
Is formed in a hollow bellows shape as shown in the drawing, and a seal portion 26a which functions as a lip seal is formed at the apex portion of the bellows over the entire circumference of the elastic member 26.

A ring-shaped weight 28 having a through hole 33 formed in the center is attached to the lower portion of the elastic member 26 so that the lower half portion 26c of the elastic member 26 is always urged downward. Has been done. The upper half portion 26b of the elastic member 26 includes the lower surface of the body plate 24 and the fixing plate 3 fixed to the body plate 24 with bolts or the like.
It is fixed to the main body plate 24 in a state of being sandwiched between the upper surface of 4 and the upper surface of 4. The weight 28 is fixed to the elastic member 26 by sandwiching the lower half portion 26c of the elastic member 26 by a fixing plate 36 fixed to the weight 28 with bolts or the like.

In the inductor plate 22 thus constructed, in its natural state, as shown by the solid line in the figure, the elastic member 26 is extended downward by the weight 28, and the seal portion 26a is in the horizontal plane. It is in a contracted state. In this state, the inductor plate 22
When trying to enter the inside of the container 30, the sealing portion 26
The tip of a does not contact the inner wall surface of the container 30, and the inductor plate 22 can easily enter the container 30. On the other hand, the weight 28 of the inductor plate 22
When the ink comes into contact with the ink surface, the weight 28 is pushed up to the ink surface, and the elastic member 26 contracts in the vertical direction as shown by the chain double-dashed line in the figure. As a result, the seal portion 26a is spread in the horizontal plane, is in close contact with the inner wall surface of the container 30, and seals the upper surface of the container 30. In this state, the inductor plate 22 presses the ink downward, and the ink can be pumped by the pump.

The body plate 24 has a vent hole 24.
a is formed at a plurality of locations, and when the elastic member 26 contracts in the vertical direction, the air inside thereof is exhausted to the outside. Since the ventilation hole 24a is formed, the ventilation hole 24a and the through hole 3 in the central portion of the weight 28 are formed.
3 and through the through hole 32 at the center of the elastic member 26, the lower side of the inductor plate 22 and the inductor plate 2
The upper side of 2 is inserted. Therefore, if the inductor plate 22 is brought into direct contact with the ink, the ink leaks to the outside through the through holes 32 and 33 and the ventilation hole 24a. Therefore, in practice, the ink is pressed by the inductor plate 22 from above the vinyl sheet 36 with the vinyl sheet 36 being covered on the ink surface.

However, a hole is made in the central portion of the vinyl sheet 36 corresponding to the suction port 20a so that ink can be sucked from the suction port 20a. Further, by interposing the vinyl sheet 36 between the inductor plate 22 and the ink as described above, it is possible to prevent the inductor plate 22 from being directly stained with the ink. It should be noted that the vinyl sheet 36 is attached to the ink container from the beginning when ordinary printing ink is sold, and the operator does not need to specially prepare the vinyl sheet 36. .

Next, the operation of the high viscosity ink pump configured as described above will be described. 3 to 8 are views for explaining the procedure of pressure-feeding the ink in the container 30 by the high-viscosity ink pump.

First, as shown in FIG. 3, the pump body 1
Below the container 8, a container 30 filled with high-viscosity ink such as printing ink is set. In this state, the above-mentioned vinyl sheet 36 is hung on the upper surface of the container 30, and the operator has a diameter of the suction port 20a at a position corresponding to the suction port 20a at the center of the vinyl sheet 36. A slightly smaller hole 36a is opened.

In this way, the holes 36 are formed in the vinyl sheet 36.
After opening a, the pump body 18 is lowered as shown in FIG. 4, and the inductor plate 22 is inserted into the container 30. At this time, the elastic member 2 of the inductor plate 22
Since 6 is stretched downward by the weight 28, the seal portion 26a is not in contact with the inner wall of the container 30, and the inductor plate 22 can easily enter the container 30.

Then, as it is, the inductor plate 2
2 is lowered, the weight 28 becomes a vinyl sheet 36.
Touches the upper surface of the and the weight 28 stays in that position. On the other hand, as the main body plate 24 further descends, the elastic member 26 contracts in the vertical direction as shown in FIG. 5, and the seal portion 26a comes into close contact with the inner wall of the container 30 to seal the upper surface of the ink. become. In this state, by further lowering the pump body 18 and causing the pump body 18 to perform the suction operation, the ink inside the container 30 is removed from the vinyl sheet 3
It is sucked into the pump main body 18 through the hole 36a of No. 6 and is fed under pressure to a printing machine or the like.

When this pressure feeding operation is continued, the ink in the container 30 is emptied and the state shown in FIG. 6 is obtained. From this state, the inductor plate 22 is pulled out above the container 30. At this time, first, the pump body 18
However, since the weight 28 stays on the upper surface of the vinyl sheet 36, the elastic member 26 is stretched in the vertical direction, and the seal portion 26a is attached to the container 30 as shown in FIG. It will come away from the inner wall. Therefore, the inductor plate 22 is no longer the container 3
It is possible to easily pull out the container 30 to the position shown in FIG. 8 without being restricted by the inner wall of 0. Therefore, the fluid slightly remaining in the container 30 does not scatter to the outside, and the surroundings of the pump can be prevented from becoming dirty.

As described above, the high-viscosity ink pump of one embodiment is provided with the elastic member that expands and contracts in the vertical direction and expands and contracts in the horizontal direction in accordance with this expansion and contraction.
It is possible to facilitate the entry of the inductor plate into the container and the withdrawal of the inductor plate from the container, and it is possible to prevent the ink inside the container from splashing to the outside.

The present invention can be applied to modifications and variations of the above embodiments without departing from the spirit of the present invention.

For example, in the above embodiment, the case where the fluid is sucked from the cylindrical container has been described. However, by sucking the fluid from the rectangular container by matching the planar shape of the inductor plate with the shape of the container. Is also possible.

[0029]

As described above, according to the high viscosity ink pump of the present invention, the elastic member is vertically extended by the weight when the inductor plate is inserted into the ink container and when the inductor plate is pulled out from the ink container. ,
Since the elastic member contracts in the horizontal plane and separates from the inner wall surface of the ink container, the inductor plate can be used without exhausting air between the inductor plate and the ink surface or blowing air between the inductor plate and the ink surface. Can be easily inserted into and removed from the container. Therefore, it is possible to prevent the ink from scattering outside the container. Further, when the weight comes into contact with the ink surface, the weight is pushed upward and the elastic member contracts in the vertical direction, and this elastic member expands in the horizontal plane. The ink container can be brought into close contact with the wall surface and sealed. As a result, the same ink suction operation as in the conventional case is possible.

[0030]

[Brief description of drawings]

FIG. 1 is a side view showing an overall configuration of a high-viscosity ink pump according to an embodiment.

FIG. 2 is a side sectional view showing an enlarged part A in FIG.

FIG. 3 is a diagram for explaining a procedure for pressure-feeding the ink in the container by the high-viscosity ink pump.

FIG. 4 is a diagram for explaining a procedure for pressure-feeding the ink in the container by the high-viscosity ink pump.

FIG. 5 is a diagram for explaining a procedure for pressure-feeding the ink in the container by the high-viscosity ink pump.

FIG. 6 is a diagram for explaining the procedure of pressure-feeding the ink in the container by the high-viscosity ink pump.

FIG. 7 is a diagram for explaining the procedure of pressure-feeding the ink in the container by the high-viscosity ink pump.

FIG. 8 is a diagram for explaining the procedure of pressure-feeding the ink in the container by the high-viscosity ink pump.

FIG. 9 is a diagram for explaining a procedure for pumping the fluid in the container by the conventional pump for high-viscosity fluid.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Base 12 Support 14 Elevating member 16 Air cylinder body 18 Pump body 20 Suction part 22 Inductor plate 24 Body plate 26 Elastic member 28 Weight 30 Ink container 32, 33 Through hole 34, 36 Fixing plate

Claims (2)

(57) [Claims] 1. A base, a pump main body which is arranged so as to be movable up and down with respect to the base, and has a pipe-shaped suction portion at its lower end for sucking high-viscosity ink, and a pump body disposed around the suction portion. A high-viscosity ink pump provided with an inductor plate for sealing between an outer peripheral portion of the suction portion and an inner wall surface of a container containing high-viscosity ink, wherein the inductor plate is A plate-shaped main body plate fixed to the periphery, and an elastic member that is attached to the lower surface of the main body plate and that can expand and contract in the vertical direction. And an elastic member that contracts in the horizontal plane as it extends in the vertical direction and is separated from the inner wall surface of the container, and a state in which the elastic member is arranged at the lower end of the elastic member and extends vertically in the natural state. High viscosity ink pump, characterized in that it comprises a weight for retaining the. 2. The pump for high viscosity ink according to claim 1, wherein the elastic member is made of rubber.