JP2527926Y2 - Hot melt applicator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot melt applicator of the multi-head nozzle type for producing cardboard boxes and other packaging boxes.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
The hot melt applicator of the type in which the pump 3 and the pump 74 are placed at a place away from the work 77 and the application nozzle device 76 is provided on the side of the moving path of the work 77 via a heating hose 75. Is known ,
This requires a, heated hose, b, heated hose
Is in the way, c, there is a heated hose, etc.
Tsu is required click valve 80 or Lilly off valve, d, heating ho
E, a heating hose that consumes a large amount of power to heat
Maintenance is difficult because of the
Space is required for installation, g
Defects , such as many failures due to the presence of
Was. Also, Japanese Utility Model Application No. 63-32438 (Japanese Utility Model Application Laid-Open No. 1-13)
No. 7779) as shown in the microfilm
The air cylinder is connected to the bottom of the tank via a check valve.
If discharge cylinders that operate by reciprocating motion are installed in parallel,
Both air pistes are linked to the operation of the above air cylinder
Between the discharge cylinder and the discharge nozzle.
Hot melt dispensing machines are also known,
However, all of the above defects a to g cannot be completely solved
Not only one pump as in the present invention
Different amounts of hot melt for each nozzle
Provision of a type that does not use a hose or check valve
Extremely difficult to communicate nozzles and cooperate with each other
It is not something that can be easily done.
Micro of No. 3718 (Japanese Utility Model Application Laid-Open No. 62-194473)
A piston needle is used for the film with an air cylinder.
Coating equipment that reciprocates to open and close nozzles, and general
The nozzle is provided with a plurality of hot melt adhesives etc.
Although the coating device is described, the above-described a to
g not only cannot completely solve all the defects, but also
These pumps can be used with multiple nozzles with a single pump
Apply a different amount of hot melt to each hose
For the delivery of a type that does not use a check valve, contact the nozzle,
Difficult to cooperate between nozzles, etc.
Not something.

[0004]

[Problems to be solved by the invention] The invention is designed to eliminate the need for a heating hose, to eliminate the need for a check valve and a relief valve, to reduce power consumption, to facilitate maintenance, and to reduce installation space. It is an object of the present invention to provide a novel hot-melt applicator that achieves all of the above-mentioned contrivances and contrivances.

[0005]

In order to achieve the above object, a hot melt applicator according to the present invention has a lower surface.
Tank block with heater 69 having liquid outlet hole 6
And the melting tank block 3 are configured separately.
Upward liquid receiving hole 19, liquid reservoir holes 15, 16 and left and right
An air pump block having a pair of female threads 17 and 18 for discharging liquid.
2 and these melting tank block 3, air pump blow
A pair of left and right female screws 4 for liquid receiving, which are configured separately from the
1, 42 and the nozzle member 38 and the nozzle member 3
8 has a needle valve 52 with an opening / closing control screw 63
An application nozzle device block 4 with a plurality of heaters 70;
5 with the opening edge surface of the liquid outlet 6 of the melting tank block 3.
The opening edge surface of the liquid receiving hole 19 of the air pump block 2 is
Communicates according to the facing state, and air pump block
2, the female screws 17 and 18 for discharging liquid and the nozzle device block 4;
5 liquid receiving female screws 41 and 42 on one horizontal line
In a state of mutual communication, fix each other with bolts
And the female screw 1 for liquid discharge existing on the horizontal line
7, 18 at both outer ends of the liquid receiving female screws 41, 42
What is located by screwing the tapered male screws 33, 81
It is closed .

[0006]

[Action] melter tank block as described above, the pump Bro
The click and the nozzle unit block be one obtained by 1 embodied by fixing with screws, even Moi check valve heated hose
Et not an integral structure, if used is to use mounted on the movable or non-movable in the mount 1, as shown in FIG.

[0007]

[Effect of the Invention] The present invention has the above-mentioned structure, so that no heating hose is required, no check valve and relief valve are required, power consumption can be reduced, maintenance can be facilitated, and a narrow installation can be achieved. It can be used in a space and can reduce the number of failures.
This makes it extremely easy to provide a tilt applicator .

[0008]

EXAMPLE shown in FIG. A plurality of air pump block 2 on the upper surface of the mount 1, a heater 69 with the melter tank block 3 of the adhesive on the upper surface of the air pump block 2, also on the side surface of the air pump block 2 Heaters 7
The application nozzle device blocks 4 and 5 with 0 are fixed in an overlapped state by bolts 7 and 8, respectively.

The mounting base 1 is composed of a lower mounting plate 9, a column 10 erected on the lower mounting plate 9, and a mounting upper plate 11 fixed to the upper end of the column 10.

The air pump block 2 has a piston moving hole 14 having the same diameter as an extruding piston 13 to be described later, which is formed in a rear end face of a rectangular first metal block 12 having a square cross section.
And a rod-shaped push-out piston 13 is inserted into the piston moving hole 14, and the circumference of the bottom half of the piston moving hole 14 is increased so that the first liquid reservoir hole 15 is formed at a location also close to the opening. The second liquid reservoir holes 16 are respectively formed by enlarging the peripheral diameter, and the second liquid reservoir holes
The left and right first communicating with the inside and outside at the position closer to the liquid reservoir hole 16
Taper female screws 17 and 18 are formed, and a liquid receiving hole 19 communicating with the inside and outside of the upper surface of the second liquid storage hole 16 is formed.
The liquid receiving hole 19 communicates with the liquid discharging hole 6 formed on the bottom surface of the melting tank 3, and a heat resistant plastic first intermediate member 20 and O-rings 21 and 22 are provided at the rear end of the first block 12. The first air cylinder 23 having a rectangular parallelepiped shape and having a square cross section is connected with four long first tightening and fixing screws 24.
The first air piston 26 is fixed to the rear end of the rod portion 25 by a fixing screw 27, and the first air piston 26 and the first air cylinder are fixed at the rod portion 25. 23, a return coil spring 29 of the push-out piston 13 is wound around a position between the front cover member 28 and a position behind the position where the first air piston 26 returns to the rearmost position on the peripheral wall of the first air cylinder 23. Left and right second tapered female screw 3 of the same standard
0 and 31 are bored, and the first and second tapered male screws 32 and 33 are screwed to the right second tapered female screw 31 and the left first tapered female screw 17, and the two tapered female screws 3 are formed.
1 and 17 are closed, and the first nipple 3 for feeding the air for advance of the push-out piston 13 to the second tapered female screw 30 on the left side.
4 are connected.

The coating nozzle device blocks 4 and 5 include:
Rectangular second metal block 35 having a rectangular cross section
A liquid guide hole 36 is formed in the front end face of the
A third tapered female screw 37 is engraved at the front end of the liquid guide hole 36, and a nozzle member 38 is screwed onto the third tapered female screw 37. A valve seat is provided at the rear end of the liquid hole 39 of the nozzle member 38. A pair of left and right fourth tapered female screws 41 and 42 of the same standard penetrating through both measurement surfaces at the intermediate position of the liquid guide hole 36 are provided on both left and right side surfaces of the second block 35. At the rear end of the block 35, a long rectangular metal second air cylinder 46 having a square cross section is provided with four long second fastening members via a second intermediate member 43 made of heat-resistant plastic and O-rings 44, 45. The shaft hole 4 is connected to the front cover member 48 and the second intermediate member 43 of the second air cylinder 46 with the liquid guide hole 36 by using a combined fixing screw 47.
The piston rod 51 is inserted into the shaft holes 49 and 50 so that the front end of the piston rod 51 faces the liquid guide hole 36 and the rear end faces the second air cylinder 46. A needle valve 52 is provided at the front end of the piston rod 51 and seated on the valve seat 40. A second air piston 53 is provided at the rear end of the piston rod 51.
Is fixed by fixing screws 54, and the second air cylinder 4
6, a pair of left and right fifth tapered female screws 55 and 56 of the same standard penetrating inward and outward at the front end portions on both left and right side surfaces of the sixth tapered female screw 55 and a third tapered male screw 57 on the fifth tapered female screw 55 on one side. The one side fifth tapered female screw 55
And the second nipple 58 for supplying air for opening the needle valve 52 is connected to the fifth taper female screw 56 on the other side, and the second air cylinder 46 is inwardly and outwardly located at rear end portions on both right and left side surfaces. 6th of the same standard of a pair of right and left penetrating
Taper female screws 59 and 60 are formed, and a fourth taper male screw 61 is screwed to the sixth taper female screw 59 on one side to close the sixth taper female screw 59 on one side, and the second taper female screw 59 on the other side. A third nipple 62 for supplying air for closing the needle valve 52 is connected to the 6-taper female screw 60, and a stroke regulating screw 63 for the needle valve 52 is provided on the rear end wall of the second air cylinder 46. O-ring 6 for screw 63
A lock nut 65 with four is attached.

The first block 12 has a first end with respect to a rear end thereof.
The connecting portion of the intermediate member 20, the first
The connecting portion of the air sealing 23, the connecting portion of the second intermediate member 43 to the rear end of the second first block 35, the second intermediate member 4
3, the connecting portion of the second air cylinder 46 is formed by fitting a circular convex portion 67 and a circular concave portion 68, respectively.
Further, since the first fastening and fixing screw 24 and the second fastening and fixing screw 47 are arranged in four squares, 90
It can be used even if it is connected in a state of being rotated by 180, 270 or 270 degrees. That is, the first nipple 34, the second nipple 58, and the third nipple 62 can be appropriately replaced with the first tapered male screw 32, the third tapered male screw 57, and the fourth tapered male screw 61, and air is introduced. The position (orientation) can be selected.

[0013] melting tank heater 69 is attached to the block 3 is intended to check乍Ra heated by the temperature sensor 78 to fluidized state which does not cause scorching of the adhesive, also coating nozzle device blocks 4,5 The heater 70 attached to the heater is used to heat the adhesive up to the final use temperature while being checked by the temperature sensor 79.

In the figure, a virtual line indicated by reference numeral 71 indicates a state in which the above-described coating nozzle device is mounted on the right side of the first block 12, and a reference numeral 72 indicates a spacer. Further, a tapered male screw 81 is used to close the fourth tapered female screw 42 when the application nozzles 4 and 5 are fixed in a horizontal overlapping state. belongs to.

[Brief description of the drawings]

FIG. 1 is an overall side view showing an embodiment of the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is a sectional view taken along the line AA of FIG. 1;

FIG. 4 is a perspective view of a coating nozzle device.

FIG. 5 is an exploded perspective view of the same.

FIG. 6 is an overall side view showing a conventional example.

[Explanation of symbols]

1 Mounting stand 2 Air pump
Block 3 Melting tank block 4 Coating nozzle device block 5 Coating nozzle device block 6 Liquid outlet hole 7 Bolt 8 Bolt 9 Mounting lower plate 10 Support 11 Mounting upper plate 12 First block 13 Extrusion piston 14 Piston moving hole 15 First liquid Reservoir 16 Second liquid reservoir 17 Left first tapered female screw 18 Right first
Taper female screw 19 Liquid receiving hole 20 First intermediate member 21 O-ring 22 O-ring 23 First air cylinder 24 First tightening and fixing screw 25 Rod portion 26 First air piston 27 Fixing screw 28 Lid member 29 Return coil spring 30 2nd taper female screw 31 2nd taper male screw 32 1st taper male screw 33 2nd taper male screw 34 1st nipple 35 2nd block 36 Liquid guide hole 37 3rd taper female screw 38 Nozzle member 39 Liquid hole 40 Valve seat 41 4th taper female screw 42 4th taper female screw 43 2nd intermediate member 44 O-ring 45 O-ring 46 2nd air cylinder 47 2nd fastening / fixing screw 48 Lid member 50 Shaft hole 51 Piston rod 52 Needle valve 53 2 air piston 54 fixing screw 55 5th taper female screw 56 5th Par female screw 57 Third tapered male screw 58 Second nipple 59 Sixth tapered female screw 60 Sixth tapered female screw 61 Fourth tapered male screw 62 Third nipple 63 Regulatory screw 64 O-ring 65 Lock nut 67 Circular convex part 68 Circular recess 69 Heater 70 Heater 71 Coating nozzle device 72 Spacer 73 Melting tank 74 Pump 75 Heating hose 76 Nozzle device 77 Workpiece 78 Temperature sensor 79 Temperature sensor 80 Check valve 81 Taper male screw

Claims (1)

(57) [Scope of request for utility model registration] 1. A heater 6 having a downward liquid outlet hole 6 on a lower surface.
9 and the melting tank block 3
Liquid receiving hole 19 and liquid reservoir hole formed separately from
15, 16 and a pair of left and right female screws 17 and 18 for liquid discharge
Air pump block 2 with
Left and right separately configured from the air pump block 2
A pair of female screws 41 and 42 for receiving liquid and a nozzle member 38
And with the opening regulating screw 63 for opening and closing the nozzle member 38
For application with a plurality of heaters 70 having a needle valve 52
The nozzle device blocks 4 and 5 are connected to the melting tank block 3
Edge of liquid outlet hole 6 and liquid receiving hole of air pump block 2
The opening edge surfaces of the 19 are aligned and communicated with each other in a vertically opposed state,
And the female screws 17 and 18 for discharging liquid of the air pump block 2
Female screws 41, 42 for receiving liquid of the nozzle device blocks 4, 5.
As a state but which communicates with the Oite another on a single horizontal line, Bo
And fixed together with the
Female screws 17 and 18 for liquid discharge and female screws 4 for liquid reception
At both outer ends in 1, 42, tapers
A hot melt applicator, wherein the hot melt applicator is closed by screwing the dies 33 and 81 together .