KR20170025224A - Grease automatic injection device - Google Patents

Abstract

The present invention provides a grease automatic injection device, which can pump grease without a remaining amount in a grease container, has excellent pumping efficiency, and considers safety when being treated. According to a desirable embodiment of the present invention, the grease automatic injection device comprises: a grease container support plate; an injector column; a vertical transfer rod; an attachment rod; a piston housing; a camshaft; a driving motor; a piston; a screw casing; and a grease pumping screw.

Description

Grease automatic injection device

The present invention relates to a grease automatic injecting apparatus for directly pumping a grease contained in a grease tank into a required lubricating portion, and more particularly, to a grease automatic injecting apparatus capable of pumping without residual capacity in a grease tank, And an automatic grease automatic injecting apparatus considering safety.

In general, grease is a high-viscosity lubricant used in heavy equipment, large vehicles, and friction parts of industrial machinery to assist wear and proper operation of the equipment. Since the grease is semi-solid due to its high viscosity, a forced pumping device is applied to automatically inject the grease stored in the grease container into the outside. In particular, even if the forced pumping is performed, the remaining amount may be generated. On the pumping device side, There is an urgent need for an alternative because it is not easy to handle.

On the other hand, as a technology to be a background of the present invention, Korean Registered Utility Registration No. 20-0380118, 'automatic grease injection device' has been proposed. This is because the operating rod inserted into the outer cylinder is lifted up and down by driving the link connected to the driving motor to fill the space with the grease and the grease filled in the space is compressed by the action of the compression slider and the sealing slider, So that the grease can be safely discharged to the outside through the discharge cap. Therefore, the operator has the advantage of being able to inject grease at any time in a short time, simply and without tools.

However, the above background art has a high viscosity of the grease, and even if it is used in a large amount, the remaining amount in the grease tank causes economical efficiency. Also, since the grease sticks to the periphery of the outer tube and the connecting member, it has a disadvantage that handling is inconvenient.

Korean Registration No. 20-0380118 (automatic grease injection device)

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an automatic pouring apparatus for a green pouring apparatus capable of pumping without remaining in a pouring tank, having excellent pumping efficiency and considering safety during handling.

According to a preferred embodiment of the present invention,

A grease automatic injecting apparatus for pumping a grease filled in a grease tank and injecting it into a required place,

A grease nipple support plate supporting the grease nipple;

An injector column disposed at one side of an upper surface of the supporter and having a hollow section and having a predetermined height upward;

A vertical transfer belt positioned at a front surface of the injector column and supported so as to be movable up and down in a predetermined section;

A driving motor mounting base fixed to the upper side of the vertical transfer frame and disposed horizontally;

A piston operating chamber communicated in a direction orthogonal to the grease suction port, a grease compression chamber extending and communicating with the end of the piston operating chamber, and a grease communicating vertically upwardly with the grease compression chamber A piston housing having a port and provided so as to be in close contact with a lower surface of the driving motor mounting base;

A camshaft rotatably supported at a center of the piston housing in a vertical direction;

A driving motor mounted on the driving motor mounting base for rotationally driving the camshaft;

A piston which is slidably inserted into the piston operating chamber and moves forward and backward in the radial direction of the piston housing every time the camshaft rotates to generate a grease compressive force in the grease compression chamber and a grease compressive force in the grease suction port;

A cylindrical screw casing having a smaller diameter and a lower height than the grease tank and mounted on a lower surface of the piston housing;

And a grease pumping screw disposed inside the screw casing and connected to a lower end of the camshaft to pump upward the grease in the grease chamber when the driving motor rotates.

A compression chamber cap screwed to the grease compression chamber and fixed to the piston housing;

A poppet for opening and closing an outlet of the piston operating chamber;

And a poppet sheet of rubber material which is fitted between the compression chamber cap and the poppet so as to shrink when the piston is pressurized and discharged by the piston and pushes the poppet to the outlet side of the piston operation chamber by elastic restoring force when the piston is retracted. do.

Further, the poppet has a poppet body having a conical surface and a poppet coupling boss for coupling to the poppet sheet.

Further, the poppet sheet is characterized in that a seat engagement groove for engagement with the pushing chamber cap, a poppet engagement groove for engagement with the poppet, and a circular hook portion abutting against the grease compression chamber are formed.

Further, between the poppet and the poppet sheet, a first gap capable of primarily compressing the poppet sheet is provided.

Between the compression chamber cap and the poppet sheet, a second gap capable of secondarily compressing the poppet sheet is provided.

Further, the injector column is further provided with a vertically movable lifting and lowering handle for lifting the vertical lifting belt for replacement after all the grease in the tank is consumed.

In addition, the vertical take-off gear lift handle is fixed to one end of a pinion gear shaft rotatably supported on the upper portion of the injector column, and the pinion gear coupled to the pinion gear shaft is vertically connected to the rack in a vertical direction And are engaged with each other.

And a vertically movable lowering preventing shovel, one end of which is connected to the side of the grease bar receiving plate, and the other end of which is connected to the vertical transporting belt, is further provided.

In addition, a scraper which is in close contact with the inner surface of the grease chamber is further provided at the lower end of the screw casing.

According to the automatic grease inserting apparatus of the present invention, a grease pumping screw interlocking with the piston is installed in the screw casing, and the grease is forcibly fed to the suction side, thereby improving the pumping performance of the high viscosity grease. In addition, a poppet and a poppet seat are provided in the compression chamber of the piston housing side to increase the suction force (negative pressure) and improve the pumping output, thereby improving the pumping efficiency. Also, the inner surface of the grease trough is slid down through the scraper, and the grease pumping screw descends to the bottom of the grease tin, so that no remaining amount remains. Further, since the piston housing is located at the outer uppermost portion of the screw casing, there is no possibility of contact with the grease, thereby facilitating handling. In addition, even if the vertical barrel is inadvertently lowered due to the elevation of the barrel to replace the barrel, it is possible to prevent a safety accident by preventing the barrel bar from being vertically lowered by the lower barrel.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is a perspective view illustrating a state of use of an automatic grease injection apparatus according to the present invention;
FIG. 2 is a partially cut away perspective view showing the state in which the cup is removed in FIG. 1; FIG.
FIG. 3 is a perspective view of the automatic automatic irrigation device of FIG. 2 as viewed from the rear side.
FIGS. 4, 5, and 6 are operation states of the automatic inserting apparatus according to the present invention in order, according to the use state.
Figure 7 is an enlarged view of the piston housing portion of Figure 5;
8A and 8B are operational states at the time of suction and discharge of the grease in Fig.
9A is a front sectional view of a poppet according to the present invention.
9B is a front sectional view of the poppet sheet applied to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

The automatic grease injector 10 according to the present invention can reduce the injection cost by pumping the grease filled in the grease reservoir 5 without remainder and is excellent in the pumping efficiency by the grease pumping screw 30, There is no fear that the pump 20 is brought into contact with the grease while the pump 20 is provided on the upper side, which is advantageous in handling. In addition, even if the vertically slidable lifting handle 40 is accidentally missed while the vertically movable table 16 is lifted after the grease to be pumped is exhausted to the grease container 5, Respectively.

1 to 4, the automatic grease inserting apparatus 10 is provided with a grease nail support plate 12 for supporting a grease nail 5. Since the grease container support plate 12 has a larger support surface than the bottom surface of the grease container 5, it is not limited to a specific shape or structure. Although not illustrated in this embodiment, it is further possible to provide means for fixing the grease container 5 to the specified position in the grease nail plate 12.

An injector column 14 is disposed on one side of the top surface of the grease receiving plate 12. The injector column 14 has a constant height upward and has a hollow cross section. In this embodiment, the injector column 14 is manufactured in the form of a square box, and a flange is provided at the lower end thereof, and is fixed to the porous support plate 12 with bolts.

A vertical transfer belt 16 is provided in the injector column 14. The vertical transfer table 16 is positioned on the front surface of the injector column 14 and is supported so as to be movable up and down in a predetermined section. The vertical transfer table 16 is provided with a rotary roller 161 rotatable at a lower end thereof and is supported on the front surface of the injector column 14 and has a rack gear connecting plate 162 at an upper end thereof. The rack gear connection plate 162 is connected to the upper end of the rack gear 46 to be described later. The vertical transfer belt 16 is guided to move up and down through the rolling motion of the rotary roller 161 to the column 14 in conjunction with the vertical movement of the rack gear 46. [

The vertical transfer table 16 is provided with a drive motor mounting base 18. The drive motor mounting base 18 is fixed via a connecting plate 17 which is vertically connected to the carriage 16. The driving motor mounting base 18 may further include a circular motor mounting plate 181 disposed horizontally and an outer cylinder 182 capable of receiving the grease container 5 below the motor mounting plate 181. [

A piston housing (20) is mounted on the drive motor mounting base (18). The piston housing 20 is provided on the lower side of the motor mounting plate 181 of the drive motor mounting base 18.

As shown in FIGS. 7 to 8, the piston housing 20 is provided with a grease suction port 201 formed vertically downward on the lower surface thereof, a piston operating chamber 202 communicating with the grease suction port 201 in a direction orthogonal to the piston operating chamber 202, 202 and a grease discharge port 204 vertically upwardly communicated with the grease compression chamber 203. The grease discharge port 204 communicates with the grease discharge port 204 at the end thereof. In this embodiment, each of the grease suction port 201, the piston operating chamber 202, and the grease discharge port 204 is symmetrically formed with respect to the center of the piston housing 20 as a pair.

A camshaft (22) is rotatably supported at the center of the piston housing (20). The camshafts 22 are arranged in the vertical direction. The camshaft 22 has a cam 221 which is eccentric with a certain distance S from the rotation center. A piston connector 23 for connecting a piston 26, which will be described later, is rotatably inserted into the cam 221.

A driving motor 24 for rotating the camshaft 22 is mounted on the driving motor mounting base 18. The drive motor 24 may be a geared motor including a speed reducer.

A pair of pistons (26) are provided in the piston housing (20). The piston 26 is slidably inserted into the piston operating chamber 202. The piston 26 moves forward and backward in the radial direction of the piston housing 20 every time the camshaft 22 rotates to generate a grease suction force in the grease suction port 201 and a grease compressive force in the grease compression chamber 203.

A screw casing (28) is mounted on the lower surface of the piston housing (20). The screw casing 28 is cylindrical and has a smaller diameter and a lower height than the grease reservoir 5. A scraper 29 may be further provided on the lower end of the screw casing 28 so as to be in close contact with the inner surface of the cap 5.

A pumping screw (30) is disposed inside the screw casing (28). The pumping screw 30 is connected to the lower end of the camshaft 22 to pump the grease in the grease chamber 5 upward when the drive motor 24 rotates. The pumping screw 30 has a screw shaft 301 and a helical wing 302 wound around the screw shaft 301 several times.

The compression chamber cap 32, the poppet 34, and the poppet seat 36 are provided in the grease compression chamber 203 so that the suction and compression of the grease can be performed smoothly according to the operating direction of the piston 26 .

The compression chamber cap 32 is screwed to the grease compression chamber 203 and fixed to the piston housing 20. The poppet 34 is located at the outlet side of the piston operation chamber 202 to control opening and closing of the outlet The poppet seat 36 is fitted between the compression chamber cap 32 and the poppet 34 to be contracted when the piston 26 is pressurized and discharged from the piston 26 and the resilient restoring force when the piston 26 is retracted, To the outlet side of the piston operating chamber (202). The poppet sheet 36 is made of a rubber material having compression and elastic repulsive force.

The poppet 34 has a poppet body 341 having a conical surface 341a and a poppet coupling boss 342 for engaging the poppet sheet 36. The poppet body 341 has a conical surface 341a. The poppet seat 36 has a seat engagement groove 361 to be engaged with the pushing chamber cap 32, a poppet engagement groove 362 to be engaged with the poppet 34, a circular hook portion (Not shown).

At this time, between the poppet 34 and the poppet seat 36, the first cavity L1 capable of primarily compressing the poppet sheet 36 is provided. Between the compression chamber cap 32 and the poppet seat 36, the second cavity L1 capable of secondarily compressing the poppet seat 36 is provided.

3 and 4, there is further provided a vertically movable lifting / lowering handle 40 for lifting the vertical lifting table 16 for replacement after all the grease in the cup 5 has been consumed. do.

The vertically movable lifting handle 40 is fixed to one end of a pinion gear shaft 42 rotatably supported on the upper portion of the injector column 14 and the pinion gear 44 coupled to the pinion gear shaft 42 And is coupled to a rack gear 46 vertically connected to the feeding table 16 in a vertical direction.

Further, the present invention may further include a vertically movable lowering preventing shovel 50 connected to the side of the grease nail receiving plate 12 and the other end connected to the vertical conveying belt 16. The vertically movable shovel (50) for preventing the fall of the feed bar has a structure for controlling rapid descent through the resistance of the fluid contained in the orifice.

The operation of the automatic grease injector thus constructed will be described.

4, the vertical barrel lift handle 40 is used to place the vertical barrel 16 in the upper position, and the glass barrel 5 is placed on the upper surface of the grease bar support plate 12. [ At this time, the cover of the grease container 5 is removed.

Then, when the drive motor 24 is driven after the vertically movable lifting handle 40 is in the free state, the cam shaft 22 is interlocked to rotate the grease pumping screw 30, and at the same time, The piston 26 connected to the piston housing 20 is reciprocated in the piston housing 20.

As a result, the grease in the grease chamber 5 is pumped upwardly of the screw casing 28 by the grease pumping screw 30 as shown in Fig. 5, and the grease suction port 201 of the piston housing 20 A suction force (negative pressure) is generated and a compressive force (grease-fold output) is generated in the grease compression chamber 203.

The poppet seat 36 restores the poppet 34 by restoring the elasticity of the piston 26 during the suction operation of the piston 26 and closes the inlet of the grease compression chamber 203. When the piston 26 is compressed, And the poppet 34 opens the inlet of the grease compression chamber 203 while being compressed.

Therefore, the grease that has been introduced into the screw casing 28 is sucked from the grease suction port 201 during the suction operation of the piston 26 and pushes the poppet 34 during the compression operation of the piston 26, And then discharged to the discharge pipe 19 through the grease discharge port 204. [

During the pumping of the grease, the screw casing 28 is lowered. At this time, since the scraper 29 is lowered from the inner surface of the grease chamber 5, the grease is not sticky around the piston housing 20.

Further, the grease pumping screw 30 scrapes the grease to the bottom of the inside of the grease container 5 by using the spiral blade 302, thereby providing an economical advantage that no remaining amount is left.

When the pumping of the grease is completed in this manner, the screw base 28 is vertically moved upward by operating the vertical lift handle 40 to replace the grease container 5.

Even if the vertical lift handle 40 is inadvertently missed at this time, the vertically movable shovel 50 prevents the vertically movable table 16 from descending, thereby preventing a safety accident.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

12: Grease nail plate
14: Injector column
16: Vertical barrow
18: drive motor mounting plate
20: piston housing
22: cam shaft
24: Driving motor
26: Piston
28: Screw casing
29: Scraper
30: Grease pumping screw
32: compression chamber cap
34: Poppet
36: Poppet sheet
40: vertical lifting and lowering handle
46: Racks
50: Shoba for vertical descent prevention

Claims (10)

1. An automatic grease inserting apparatus for pumping a grease filled in a grease tank (5)
A grease nipple supporting plate (12) for supporting the grease nipple (5);
An injector column (14) located at one side of the upper surface of the supporter plate (12) and extending upwardly to a predetermined height and having a hollow cross section;
A vertical transfer belt 16 positioned on the front surface of the injector column 14 and supported for vertical movement;
A drive motor mounting base 18 fixed horizontally on the upper side of the vertical transfer table 16;
A piston operating chamber 202 communicating in a direction orthogonal to the grease suction port 201, a grease discharge port 201 communicating with the piston compression chamber 202, (203), a piston housing (20) having a grease discharge port (204) vertically upwardly communicated with the grease compaction chamber (203) and closely fitted to a lower surface of the drive motor mounting base (18);
A camshaft 22 rotatably supported at a center of the piston housing 20 in a vertical direction;
A driving motor (24) mounted on the driving motor mounting base (18) for rotationally driving the camshaft (22);
The piston is moved in the radial direction of the piston housing 20 every time the camshaft 22 rotates so that the grease suction force is applied to the grease suction port 201 through the grease compression chamber 203 A piston 26 for generating a grease compressive force;
A cylindrical screw casing 28 having a diameter smaller than that of the grease chamber 5 and mounted on a lower surface of the piston housing 20;
A grease pumping screw 30 disposed inside the screw casing 28 and connected to the lower end of the camshaft 22 to pump upward the grease in the grease chamber 5 when the drive motor 24 rotates; Wherein said automatic injection device comprises: The method according to claim 1,
A compression chamber cap (32) screwed to the grease compression chamber (203) and fixed to the piston housing (20);
A poppet 34 for opening and closing the outlet of the piston operating chamber 202;
The piston 26 is inserted between the compression chamber cap 32 and the poppet 34 to be contracted when the piston 26 is pressurized with the grease gas and the piston 26 is retracted by the resilient restoring force of the piston 26, Further comprising a poppet sheet (36) of a rubber material which is pushed against the outlet side of the main body (202). 3. The method of claim 2,
The poppet (34)
A poppet body (341) having a conical surface (341a) and a poppet coupling boss (342) to be coupled to the poppet seat (36). 3. The method of claim 2,
The poppet sheet (36)
A seat coupling groove 361 to be coupled to the pushing chamber cap 32 and a poppet coupling groove 362 to be coupled to the poppet 34 and a circular hook portion 363 to be in contact with the grease compression chamber 203 are formed Wherein the automatic injection device comprises: The method according to claim 3 or 4,
Characterized in that a first gap (L1) capable of primarily compressing the poppet seat (36) is provided between the poppet (34) and the poppet seat (36). The method according to claim 3 or 4,
Characterized in that a second gap (L1) capable of secondarily compressing the poppet seat (36) is provided between the compression chamber cap (32) and the poppet seat (36). The method according to claim 1,
Characterized in that the injector column (14) further comprises a vertical transfer table lift handle (40) for lifting the vertical transfer table (16) for replacement after all the grease has been consumed in the grease container (5) Injection device. 8. The method of claim 7,
The vertically movable lifting and lowering handle 40 is fixed to one end of a pinion gear shaft 42 rotatably supported on an upper portion of the injector column 14 and a pinion gear 44 coupled to the pinion gear shaft 42, Is engaged with a rack gear (46) connected in a vertical direction to the vertical transfer table (16). The method according to claim 1,
Further comprising a vertically movable lowering shock absorber (50) having one end connected to the side of the grease cylinder supporter (12) and the other end connected to the vertical transfer belt (16). The method according to claim 1,
And a scraper (29) attached to the inner surface of the grease chamber (5) at a lower end of the screw casing (28).

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