KR102282389B1 - Dispensing Apparatus using a screw pump - Google Patents

Abstract

The present invention relates to a screw shaft rotating according to external power, a screw connected to the screw shaft and moving a sealing agent introduced therein in a predetermined direction by a rotation operation, a screw housing in which the screw is seated, and a screw housing in which the screw housing is seated A dispensing apparatus using a screw pump, comprising a pump body, a discharge head connected to one side of the screw housing and fixed to a discharge nozzle through which the sealing agent is discharged, wherein at least a part of the screw is formed with a different diameter. to start

Description

Dispensing Apparatus using a screw pump

The present invention relates to a dispensing apparatus, and more particularly, to a dispensing apparatus using a screw pump to which a discharge pressure is increased.

It is necessary to apply a flowable sealing agent or adhesive (hereinafter referred to as sealing agent) to the surface or groove of the device for adhesion, protection, or airtight maintenance of injection-molded products and metal cases. In the process of applying such a sealing agent or adhesive to one end of the groove portion, a dispensing device may be used to more precisely apply it.

The existing dispensing device for precise control employs a structure in which the sealing agent is transported in the direction of the discharge port by using the rotation of the screw when the sealing agent is transported. In this conventional dispensing device having a screw pump structure, when contamination occurs in a nozzle, which is a discharge port, and the nozzle portion is narrowed or blocked, there is a problem in that the sealing agent cannot be normally discharged through the discharge port. In particular, since the sealing agent is discharged by a predetermined pressure while the sealing agent moves along the transport path along the screw and passes through the narrowed discharge port, the discharge amount of the sealing agent becomes small due to the narrowed passage or the discharge is not performed normally, so that the normal sealing operation cannot be maintained. There was a problem.

In order to solve the above problems, the present invention is to provide a dispensing apparatus using a screw pump that minimizes the change in the discharge amount of the dispensing device, so that a specified discharge amount can be maintained during transfer and discharge of a sealing agent.

However, the object of the present invention is not limited to the above object, and other objects not mentioned will be clearly understood from the following description.

The present invention for achieving the above object is a screw shaft rotating according to an external power, a screw connected to the screw shaft and moving a sealing agent introduced therein by a rotation operation in a predetermined direction, the screw is seated a screw housing, a pump body on which the screw housing is seated, and a discharge head connected to one side of the screw housing and fixed to a discharge nozzle through which the sealing agent is discharged, wherein at least some of the screws are formed with different diameters Disclosed is a dispensing apparatus using a screw pump comprising:

The screw is characterized in that the shaft diameter of the first section into which the sealing agent is introduced has a first diameter, and the shaft diameter of the second section through which the sealing agent is discharged has a second diameter that is larger than the first diameter. .

In the screw, a shaft diameter of a first section in which the sealing agent is introduced has a first diameter, and a shaft diameter of a second section through which the sealing agent is discharged has a second diameter that is larger than the first diameter, and the first A shaft diameter of a certain section between the section and the second section gradually or stepwise increases from a region adjacent to the first section to a section adjacent to the second section.

The screw is characterized in that the shaft diameter gradually or stepwise increases from the portion in which the sealing agent is introduced to the section where the sealing agent is discharged.

It is characterized in that the diameter of the spiral protrusion formed on the screw is the same as the pipe diameter of the sealing agent conveying pipe formed inside the screw housing.

The height of the spiral protrusion formed on the screw is characterized in that it decreases toward the section where the sealing agent is discharged.

The dispensing device is provided on one side of the pump body, a first inlet passage through which the sealing agent is introduced, is connected to the first inlet passage, and is provided on one side of the screw housing to supply the sealing agent into the sealing agent transfer pipe in which the screw is disposed. It may further include a second inlet passage for introducing.

The dispensing device includes a spring disposed on the screw shaft and a friction seal stem that presses the screw housing in one direction by an elastic force applied to the spring, and comes in contact with one side of the screw shaft to prevent leakage of the sealing agent. may include more.

According to the present invention, the dispensing device of the present invention implements different conveying pressures for each position of the sealing material conveying pipe when the sealing material is moved, thereby facilitating discharging of the sealing agent and reducing the discharge amount even if the discharge nozzle is narrowed or partially blocked. It is easy to keep it constant.

In addition, various effects other than the above-described effects may be directly or implicitly disclosed in the detailed description according to embodiments of the present invention to be described later.

1 is a diagram illustrating an example of a dispensing apparatus according to an embodiment of the present invention.
2 is a view showing an example of a screw pump body according to an embodiment of the present invention.
3 is a view showing a screw structure according to an embodiment of the present invention in more detail.

In order to clarify the characteristics and advantages of the problem solving means of the present invention, the present invention will be described in more detail with reference to specific embodiments of the present invention shown in the accompanying drawings.

However, detailed descriptions of well-known functions or configurations that may obscure the gist of the present invention in the following description and accompanying drawings will be omitted. Also, it should be noted that, throughout the drawings, the same components are denoted by the same reference numerals whenever possible.

The terms or words used in the following description and drawings should not be construed as being limited to conventional or dictionary meanings, and the inventor may appropriately define the concept of terms for describing his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that there is. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical ideas of the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.

In addition, terms including ordinal numbers such as first, second, etc. are used to describe various components, and are used only for the purpose of distinguishing one component from other components, and to limit the components. not used For example, without departing from the scope of the present invention, the second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component.

In addition, the terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as "comprises" or "have" described in this specification are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or the It should be understood that the above does not preclude the possibility of the existence or addition of other features or numbers, steps, operations, components, parts, or combinations thereof.

In addition, terms such as "unit", "group", and "module" described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software. Also, "a or an", "one", "the" and like related terms are used differently herein in the context of describing the invention (especially in the context of the claims that follow). Unless indicated or clearly contradicted by context, it may be used in a sense including both the singular and the plural.

In addition to the above-mentioned terms, specific terms used in the following description are provided to help the understanding of the present invention, and the use of these specific terms may be changed to other forms without departing from the technical spirit of the present invention.

In the present invention, in the dispensing device, at least a partial shape of the screw for transferring the sealing agent may adopt a shape in which the shape gradually increases in the direction of the discharge port. For example, in the dispensing device, the corrugated diameter (or diameter) of the screw portion into which the sealing agent is introduced is relatively small, and the corrugated diameter of the screw portion through which the sealing agent is discharged is relatively large, and the small corrugation and the large trough are formed. When the sealing agent is transferred through the screw and the screw housing by processing in a tapered shape between the diameters, the transfer pressure can be increased based on the volume change due to the difference in corrugation diameter.

1 is a view showing an example of a dispensing apparatus according to an embodiment of the present invention, and FIG. 2 is a view showing an example of a screw pump body according to an embodiment of the present invention. In addition, FIG. 3 is a view showing a screw structure according to an embodiment of the present invention in more detail.

1 to 3 , the dispensing apparatus 100 according to an embodiment of the present invention includes a driving motor 110 , a motor coupler 111 , a shaft coupler 112 , a bracket 115 , and a screw pump body. 200 , a nozzle clamp 320 , a discharge nozzle 310 , a sealing agent storage container 120 (barrel), a sealing agent 121 , and a sealing agent connection pipe 130 .

The driving motor 110 may rotate at a specified speed according to power supplied from the outside. The driving motor 110 may include, for example, a BLDC motor or a stepping motor. The driving motor 110 may transmit a rotational force to the motor coupler 111 using a driving shaft.

The motor coupler 111 may have one end connected to the driving motor 110 and the other end connected to the shaft coupler 112 . The motor coupler 111 may be fixed and connected to a driving shaft of the driving motor 110 . Accordingly, the motor coupler 111 may rotate in the same direction as the driving shaft of the driving motor 110 according to the rotation of the driving motor 110 . The motor coupler 111 may transmit the rotational force transmitted by the driving motor 110 to the shaft coupler 112 .

The shaft coupler 112 may be disposed between the motor coupler 111 and the screw pump body 200 . The shaft coupler 112 may rotate the screw shaft 210 disposed in the screw pump body 200 while rotating at a specified speed by receiving the rotational force transmitted by the motor coupler 111 according to the operation of the driving motor 110 . there is. The above-described driving motor 110 , the motor coupler 111 , and the shaft coupler 112 may be separated.

The bracket 115 may serve to fix the drive motor 110 and the screw pump body 200 . Also, the bracket 115 may be used to vertically align the drive motor 110 and the screw pump body 200 . The bracket 115 may be made of a metal material or made of reinforced plastic so that at least a part of it can have a certain size of rigidity. The screw pump body 200 may be connected to the shaft coupler 112 while one side thereof is fixed by a bracket 115 . In a state in which the drive motor 110 and the screw pump body 200 are fixed and aligned by the bracket 115 , the screw shaft 210 may rotate according to the rotational force transmitted by the shaft coupler 112 .

The nozzle clamp 320 may serve to fix the discharge head 260 to the screw pump body 200 while surrounding the front end or discharge head 260 of the screw pump body 200 . As the nozzle clamp 320 is removed, the discharge head 260 may be separated from the pump body 240 of the screw pump body 200 .

The discharge nozzle 310 is inserted into one side of the discharge head 260 disposed on the screw pump body 200 and discharges a predetermined amount of the sealing agent 121 delivered according to the screw operation of the screw pump body 200 . can As the discharge nozzle 310 , a nozzle having a different size may be used according to the size or application area of the object to be sealed. The discharge nozzle 310 may be separated and replaced from the discharge head 260 according to an operator's operation.

The sealing agent storage container 120 may be a container in which the sealing agent 121 is stored. The sealing agent storage container 120 is disposed in parallel with the screw pump body 200 as shown, and an opening having a first size is formed on the upper side to fill the sealing agent 121 . In addition, the sealing agent storage container 120 may be provided so that an opening having a second size is formed on the lower side to inject the filled sealing agent 121 into the sealing agent connection pipe 130 . In addition, a presser capable of pushing the sealing agent 121 for downward injection of the sealing agent 121 may be further disposed in the first size opening of the sealing agent storage container 120 . In addition, a cover capable of opening and closing the opening of the first size may be further disposed.

The sealing agent connection pipe 130 may be disposed between the sealing agent storage container 120 and the screw pump body 200 . The sealing agent connection pipe 130 may serve as a passage for transferring the sealing agent 121 stored in the sealing agent storage container 120 to the screw pump body 200 . The movement of the sealing agent 121 is supplied to the screw pump body 200 through the sealing agent connection pipe 130 by gravity or the screw pump body through the sealing agent connection pipe 130 by the above-mentioned pressure of the presser. 200 may be supplied.

A drive motor 110, a motor coupler 111, and a shaft coupler 112 are disposed above the screw pump body 200, and a sealing agent storage container 120 and a sealing agent connection pipe 130 are disposed on the side, One side of the driving motor 110 and the screw pump body 200 may be fixed by a bracket 115 . When the bracket 115 is removed, the driving motor, the motor coupler 111 , and the shaft coupler 112 may be separated from the screw pump body 200 . The screw pump body 200 is supplied with a sealing agent 121 through a sealing agent connection pipe 130 disposed on the side, and the injected sealing agent 121 is the screw disposed inside the screw pump body 200 . According to the operation, it may be moved in a predetermined direction, for example, directly below where the discharge head 260 is disposed. The sealing agent 121 moved in the direction of the discharge head 260 may be discharged to the outside through the discharge nozzle 310 connected to the discharge head 260 . In particular, in the screw pump body 200 according to an embodiment of the present invention, at least a portion of the screw 255 disposed therein has a tapered shape or the size, thickness, or diameter of at least a portion of the screw 255 is gradually or stepwise. It may be provided in a changing shape. Accordingly, while the sealing agent 121 injected into the screw pump body 200 is moved to the discharge nozzle 310 , the conveying pressure acting on the sealing agent 121 may be formed differently for each part of the screw 255 . . According to one embodiment, the screw 255 disposed inside the screw pump body 200 is provided in a tapered shape whose diameter increases toward the discharge nozzle, so that the sealing agent 121 is transferred in the discharge nozzle 310 direction. The pressure may increase gradually. Accordingly, in the dispensing apparatus 100 of the present invention, the pressure increases as the sealing agent 121 moves toward the discharge nozzle 310 , so that the discharge amount of the sealing agent 121 is related to narrowing or clogging of the discharge nozzle 310 . It supports to be discharged to the outside by the specified amount without the need.

2 and 3 , the screw pump body 200 includes a screw shaft 210 , a bearing 220 , a bearing cover 225 , a spring 220 , a steel ball 235 , and a friction seal stem 230 . ), a pump body 240 , and a screw housing 250 . In addition, the screw pump body 200 may further include a sealing agent transfer pipe 254 , a screw 255 , and a discharge head 260 formed inside the screw housing 250 .

The screw shaft 210 is connected to the shaft coupler 112, and the rotational force transmitted by the shaft coupler 112 coupled to the motor coupler 111 while the motor coupler 111 connected to the driving motor 110 rotates. can be rotated correspondingly. A bearing 220 may be disposed around the upper end of the screw shaft 210 , and a bearing cover 225 may be disposed around the bearing 220 . A spring 220 may be disposed at one central portion of the screw shaft 210 , and a steel ball 235 and a friction seal stem 230 may be disposed at a lower portion of the screw shaft 210 .

The bearing cover 225 has a hollow center so that the screw shaft 210 protrudes to the outside to be coupled with the shaft coupler 112, and the inner side of the bearing cover 225 is empty so that the bearing 220 is not separated to the outside. provided, and may be assembled with the pump body 240 . The bearing 220 supports the screw shaft 210 to smoothly rotate in a predetermined direction while maintaining the center while the screw shaft 210 rotates while in contact with the screw shaft 210 . The bearing 220 may be fixedly disposed inside the bearing cover 225 .

The spring 220 is disposed in the central region of the screw shaft 210, and the upper side is fixed to one side of the screw shaft 210, and the other side is arranged to press the friction seal stem 230 directly downward by an elastic force. can The steel ball 235 may be disposed on one side of the center of the friction seal stem 230 , and may be provided such that at least a part thereof can be inserted into a predetermined groove of the screw shaft 210 . The steel ball 235 may support the screw shaft 210 so that the screw shaft 210 can rotate while maintaining its center.

The friction seal stem 230 may be disposed to press the pump body 240 directly downward by the spring 220 while in contact with a portion of the lower end of the screw shaft 210 . The friction seal stem 230 may serve to maintain the screw shaft 210 not to deviate from the central axis. In addition, the friction seal stem 230 is in contact with one side of the screw shaft 210 while pressing the pump body 240 based on the elastic force provided by the spring 220 , and is sealed to the upper side of the screw shaft 210 . It is possible to prevent the agent 121 from leaking.

The pump body 240 may form an empty space in which the screw housing 250 may be disposed, and may be provided at the front end to be coupled to the discharge head 260 . For example, the central portion of the pump body 240 may be provided in a hollow cylindrical shape, and the lower end may have a thickness thinner than the central portion, and a protruding opening with an empty central portion may be formed. At least a portion of the discharge head 260 may be inserted through the protruding opening. A nozzle clamp 320 may be coupled to a peripheral portion forming the protruding opening of the pump body 240 . Accordingly, binding of the discharge head 260 and the protruding opening of the pump body 240 is supported, and the discharge head 260 may not be separated. A first inflow passage 241 through which the sealing agent 121 can be introduced through the sealing agent connection pipe 130 may be formed on one side (eg, a part of the side surface) of the pump body 240 .

The screw housing 250 may be disposed in a cylindrical empty space formed in the center of the pump body 240 , and may have a predetermined thickness and may be provided in a tubular shape with a center vertically hollow. For example, a sealing agent transfer pipe 254 in which the screw 255 may be disposed may be disposed inside the screw housing 250 . The sealing agent transfer pipe 254 may have the same diameter from the top to the bottom of the screw housing 250 . As another example, when the overall shape of the screw 255 has a different diameter and size for each location, the shape of the sealing agent conveying pipe 254 may be formed differently for each part. For example, based on FIG. 2 , the diameter of the upper end of the sealant transfer pipe 254 is relatively larger than the diameter of the middle or lower end, and the diameter of the center of the sealant transfer pipe 254 gradually increases from the upper side to the lower side. may be reduced in diameter, and the lower end diameter of the sealing agent transfer pipe 254 may be formed to have a larger diameter than the upper end or the central diameter. In this case, as the size of the space between the screw 255 and the sealing agent conveying pipe 254 changes while the sealing agent 121 passes through the sealing agent conveying pipe 254 , the sealing agent inside the sealing material conveying pipe 254 is sealed. The transfer pressure acting on the agent 121 may be formed differently for each position. On the other hand, at one side (eg, a part of the side) of the screw housing 250, a second inflow passage for moving the sealing agent 121 flowing in through the sealing agent connection pipe 130 into the sealing agent conveying pipe 254 ( 251) may be provided. The second inlet passage 251 may be aligned with the first inlet passage 241 .

The discharge head 260 may include, for example, a sealing agent sponge 261 in which the sealing agent 121 temporarily stays, and a nozzle insertion hole 262 in which the discharge nozzle 310 is inserted. The discharge head 260 may be disposed to be aligned with the opening of the screw housing 250 while being assembled to one side of the lower end of the pump body 240 . A central portion of the discharge head 260 may be aligned with an end of the sealing agent transfer pipe 254 in the discharge direction. For example, the sealing agent sponge 261 formed in the center of the discharge head 260 and temporarily staying with the sealing agent 121 is aligned with the lower opening of the screw housing 250 (or the opening in the direction of the discharge nozzle). can be arranged as much as possible. The central portion of the discharge head 260 may be connected to the sealing agent sponge 261 and a nozzle insertion hole 262 exposed to the outside may be formed. The nozzle insertion hole 262 may be formed to be equal to or slightly smaller than the diameter of the discharge nozzle 310 so that the discharge nozzle 310 is firmly coupled to the nozzle insertion hole 262 . Alternatively, the discharge head 260 may be provided so that the size of the passage exposed with respect to the nozzle insertion hole 262 is adjustable. In this case, after the discharge nozzle is inserted into the nozzle insertion hole 262 , the discharge nozzle 310 may be firmly coupled to the nozzle insertion hole 262 while the diameter of the nozzle insertion hole 262 is adjusted by manipulation. The sealing agent 121 may be discharged to the outside through the discharge nozzle 310 .

The screw 255 may be disposed in the sealing agent transfer pipe 254 formed inside the screw housing 250 . At least part or all of the screw 255 may be made of a metal material. The screw 255 may have a shaft formed in a central portion and a spiral protrusion disposed in a spiral direction along the outer surface of the shaft repeatedly. The spiral protrusions may be formed at regular intervals, but the present invention is not limited thereto. For example, the spacing between the spiral protrusions may be designed differently between the upper end of the screw 255 and the lower end of the screw 255 . As an example, the spacing between the spiral projections disposed on the upper end of the screw 255 may be greater than the spacing between the spiral projections disposed on the lower end of the screw 255 . Accordingly, the transfer pressure in the screw 255 from which the sealing agent 121 is discharged may be formed to be relatively large compared to the upper end.

The screw 255 may include, for example, a first section 255_1 , a tapered section 255_2 , and a second section 255_3 .

In the first section 255_1 , the screw 255 may include a first shaft part 255a and a first spiral part 255b. The first shaft part 255a may have, for example, a rod shape having a first diameter. The first spiral part 255b may include a first spiral protrusion disposed at a downward angle along the exterior of the first shaft part 255a. The height of the protrusion of the first spiral part 255b (eg, the height from the outer surface of the first shaft part 255a to the outer surface of the protrusion) may have, for example, the first height.

In the tapered section 255_2 , the screw 255 may include a second shaft part 255c and a second spiral part 255d. The diameter of the second shaft part 255c may gradually change from one side to the other. For example, a diameter of a portion of the second shaft part 255c close to the first section 255_1 may be smaller than a diameter of a portion close to the second section 255_3 . Alternatively, the diameter of the second shaft part 255c may gradually increase from a portion adjacent to the first section 255_1 to a portion adjacent to the second section 255_3 . Alternatively, the diameter of the second shaft part 255c may increase stepwise (eg, increase in a step shape) from a portion adjacent to the first section 255_1 to a portion adjacent to the second section 255_3 . The total diameter of the second spiral part 255d may be the same as that of the first spiral part 255b in the first section 255_1 . Accordingly, as the diameter of the second shaft part 255c changes, the height of the second spiral part 255d may be formed differently for each position of the second shaft part 255c. For example, the height of the spiral projection of the second spiral part 255d adjacent to the first section 255_1 is higher than the height of the spiral projection of the second spiral part 255d adjacent to the second section 255_3. can

In the second section 255_3 , the screw 255 may include a third shaft part 255e and a third spiral part 255f. The third shaft part 255e may have, for example, a rod shape having a second diameter greater than the first diameter or greater than any portion of the second shaft part 255c of the tapered section 255_2. . The third spiral part 255f may include a third spiral protrusion disposed along the outer appearance of the third shaft part 255e. The height of the projections of the third spiral part 255f (eg, the height from the outer surface of the third shaft part 255e to the outer surface of the projections) is, for example, the third of the spiral projections formed on the first spiral part 255b. The second height may be lower than the first height. The diameter of the third spiral part 255f may be the same as the diameter of the sealing agent transfer pipe 254 .

Meanwhile, in the above description, while defining the center as the tapered section 255_2, the diameter of the shaft part of the screw 255 has been described as being gradually changed only in the tapered section 255_2, but the present invention is limited thereto no. For example, in at least one of the first section 255_1 and the second section 255_3, the diameter of the shaft part may be gradually or stepwisely formed differently.

As described above, in the dispensing apparatus 100 including a screw pump according to an embodiment of the present invention, the Gol diameter and the sealing agent 121 are discharged in the first section 255_1 into which the sealing agent 121 is introduced. In the second section 255_3 to be formed, the ratio of the Gol diameter may be increased or formed to be small so that the conveying pressure may be designed differently for each position of the sealing agent conveying pipe. In addition, the dispensing apparatus 100 including a screw pump according to an embodiment of the present invention is driven by processing the corrugated diameter of the second section 255_3 adjacent to the discharge unit to be close to the outer diameter of the screw 255 . After the motor 110 is stopped, it is possible to prevent the sealing agent 121 from leaking from the tip of the discharge nozzle 310 or the discharge head 260 .

As described above, in the dispensing device 100 proposed by the present invention, the sealing agent 121 is supplied from the sealing agent storage container 120 (syringe cylinder or tank, etc.) containing the sealing agent 121 through a conduit. And when the screw shaft 210 connected to the motor coupler 111 and the shaft coupler 112 rotates when the driving motor (servo motor, stepping motor, etc.) rotates, the straight motion of the spiral of the screw 255 is caused by the sealing agent 121. may be pushed in the direction of the discharge nozzle 310 so that the sealing agent 121 is discharged through the discharge nozzle 310 fixed to the end of the discharge head 260 . At this time, in the dispensing apparatus 100 of the present invention, when the sealing agent 121 is transferred through the screw 255 and the screw housing 250 , the transfer pressure according to the volume change due to the difference in the rib diameter of the screw 255 . By giving a change, it is possible to support the sealing agent 121 to be smoothly discharged to the discharge nozzle.

While the foregoing specification contains numerous specific implementation details, these are not to be construed as limitations on the scope of any invention or claim, but rather on features that may be specific to particular embodiments of a particular invention. It should be understood as an explanation.

Further, while acts are depicted in the drawings in a particular order, it should not be construed that all acts shown must be performed or that such acts must be performed in the specific order or sequential order shown to achieve desirable results. In certain cases, multitasking and parallel processing may be advantageous. Further, the separation of the various system components of the above-described embodiments should not be construed as requiring such separation in all embodiments, and the program components and systems described may generally be integrated together into a single software product or packaged into multiple software products. You have to understand that you can.

The present description sets forth the best mode of the invention, and provides examples to illustrate the invention, and to enable a person skilled in the art to make and use the invention. This written specification does not limit the present invention to the specific terms presented. Accordingly, although the present invention has been described in detail with reference to the above-described examples, those skilled in the art can make modifications, changes and modifications to the examples without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be defined by the described embodiments, but should be defined by the claims.

The present invention described above relates to a dispensing apparatus using a screw pump.

According to the present invention, the transfer pressure in the process of moving the sealing agent inside the screw pump can be varied for each location, so that the discharge amount of the sealing agent can be maintained more easily. Accordingly, by enabling the sealing process to be performed more quickly and stably, process errors are reduced and productivity is improved.

100: dispensing device
110: drive motor
111: motor coupler
112: shaft coupler
115: bracket
120: sealing agent storage container
121: sealing agent
130: sealing agent connection pipe
200: screw pump body
310: discharge nozzle
320: nozzle clamp

Claims (8)

screw shaft rotating according to external power;
a screw connected to the screw shaft and configured to move the sealing agent introduced therein by a rotational operation in a predetermined direction;
a screw housing on which the screw is seated;
a pump body on which the screw housing is seated;
a discharge head connected to one side of the screw housing and to which a discharge nozzle through which the sealing agent is discharged is fixed;
a spring disposed on the screw shaft;
a friction seal stem arranged to be in contact with one side of the screw shaft while pressing the screw housing in one direction by an elastic force applied to the spring;
a steel ball disposed on one side of the central portion of the friction seal stem, at least a portion of which is inserted into a groove formed in the screw shaft, to support the screw shaft so that the screw shaft rotates while maintaining the center; including,
the screw is
The shaft diameter of the first section into which the sealing agent is introduced is formed as the first diameter,
The shaft diameter of the second section through which the sealing agent is discharged is formed to have a second diameter greater than the first diameter,
The shaft diameter of a certain section between the first section and the second section increases gradually or stepwise from the region adjacent to the first section to the section adjacent to the second section,
A dispensing apparatus using a screw pump, characterized in that spiral projections arranged in a spiral direction along the outer surface of the shaft are formed at regular intervals. delete delete According to claim 1,
the screw is
Dispensing apparatus using a screw pump, characterized in that the shaft diameter increases gradually or stepwise from the portion in which the sealing agent is introduced to the section where the sealing agent is discharged. According to claim 1,
A dispensing apparatus using a screw pump, characterized in that the diameter of the spiral protrusion formed on the screw is the same as the diameter of the sealing agent conveying pipe formed inside the screw housing. According to claim 1,
A dispensing apparatus using a screw pump, characterized in that the height of the spiral protrusion formed on the screw decreases toward a section where the sealing agent is discharged. According to claim 1,
a first inlet passage provided on one side of the pump body through which the sealing agent is introduced;
Dispensing using a screw pump, characterized in that it further comprises; a second inlet passage connected to the first inlet passage and provided on one side of the screw housing to introduce the sealing agent into the sealing agent transfer pipe in which the screw is disposed. Device. delete

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