TW201418039A - Cartridge for solder cream supply unit of screen printer - Google Patents

Abstract

Disclosed is a cartridge for a solder cream supply unit of a screen printer, which includes a solder cream container accommodating a solder cream, opened upward, and including a solder cream discharging hole on a bottom thereof; and an opening/closing nozzle coupled to the bottom of the solder cream container, and discharging the solder cream pressed out from the solder cream discharging hole of the solder cream container in a downward direction, or preventing the solder cream from being discharged.

Description

Body of solder paste supply unit for screen printing machine [Reciprocal Reference of Related Applications]

The present application claims the priority and benefit of the Korean Patent Application No. 10-2012-0127127, filed on November 12, 2012 in the Korean Intellectual Property Office, the entire contents of which is hereby incorporated by reference.

The present invention relates to a cartridge for a solder paste supply unit of a screen printing machine, and more particularly to a cartridge for a solder paste supply unit of a screen printing machine, in which the screen printing machine The opening/closing nozzle is detachably coupled to the bottom of the solder paste container, and the solder paste container is located on the cartridge holder, and the cartridge holder constitutes a solder paste supply unit of the screen printer.

A screen printing machine is a device in which a screen mask patterned with a printed film shape is disposed on a printing surface of a printing object, and the solder paste is applied on the screen mask and is rubberized. The roller is squeezed to transfer to the printing surface, thereby performing printing.

The screen printing machine includes a plurality of drivers, and the screen printing machine includes a solder paste supply unit for supplying solder paste to the screen mask.

Generally, the conventional solder paste supply unit of the screen printing machine is disposed on the mask 2, the mask 2 is disposed on the top of the substrate 1 for printing, and the conventional solder paste supply unit discharges the solder paste downward.

The conventional solder paste supply unit of the screen printing machine schematically includes a cartridge 3, a pressing cylinder 4, and a cartridge holder 5, the cartridge 3 houses the solder paste, the cartridge 3 is opened upward, and the cartridge 3 is in its A solder paste discharge hole 3a is formed at the center on the bottom; the pressing cylinder 4 is disposed in the upper side of the body, and the pressing cylinder 4 presses the solder paste so that the solder paste can be discharged downward through the solder paste discharge hole 3a And the body holder 5 firmly supports the body 3, and the body holder 5 is formed with a discharge hole 5a which communicates with the solder paste discharge hole 3a to guide the discharged solder paste toward the mask 2.

As described above, the conventional body 3 is opened upward, and the body 3 is formed with a solder paste discharge hole 3a on the bottom thereof, and the solder paste can be discharged through the solder paste discharge hole 3a. However, the conventional solder paste supply unit of the screen printing machine has a plurality of problems: if the supply of the solder paste is stopped in the middle of the process of supplying the solder paste to the mask 2 by directly moving the squeeze cylinder 4, it is stored in The solder paste in the body 3 drops and falls freely through the solder paste discharge hole 3a and the discharge hole 5a, thus wasting solder paste, contaminating the device, and it is difficult to accurately control the supply amount of the solder paste.

Accordingly, the present invention is conceived to solve the above problems, and an aspect of the present invention is to provide a cartridge for use in a solder paste supply unit of a screen printing machine in which an opening/ The closing nozzle is detachably coupled to a bottom of a solder paste container, and the solder paste container is located on a body holder, and the body holder constitutes the solder paste supply unit of the screen printing machine, so that The opening/closing nozzle can be opened when the solder paste is discharged downward through the opening/closing nozzle, and the opening/closing nozzle can be closed when the solder paste is not discharged downward through the opening/closing nozzle, and at the same time Air pressure is applied to completely remove the solder paste remaining in the opening/closing nozzle.

According to an aspect of the present invention, a cartridge is provided for a solder paste supply unit of a screen printing machine, the cartridge comprising: a solder paste container, the solder paste container containing a solder paste, The solder paste container is opened upward, and the solder paste container includes a solder paste discharge hole on a bottom of the solder paste container; and an opening/closing nozzle coupled to the bottom of the solder paste container The opening/closing nozzle discharges the solder paste extruded from the solder paste discharge hole of the solder paste container in a downward direction, or the opening/closing nozzle prevents the solder paste from being discharged.

The opening/closing nozzle may include a guiding member and a sliding member coupled to the bottom of the solder paste container, and the guiding member includes a first outlet, and the first outlet is formed at the same a solder paste discharge hole of the same vertical line; and the sliding member is disposed to generally slide as mounted in the guiding member, and the sliding member includes a second outlet, when the sliding member slides in one direction, The second outlet is located on the same vertical line as the solder paste discharge hole and the first outlet, or when the sliding member slides in the other direction, the second outlet is not located with the solder paste discharge hole and the first One exit is the same vertical line.

The guiding member may include a pair of fastening portions and a connecting portion, the pair of fastening portions contacting the bottom of the solder paste container and coupled to the bottom of the solder paste container, and the pair of fastening portions are parallel Grounded to be spaced apart from each other; and the joint a lower end formed to connect opposite lateral sides of the pair of fastening portions, and the connecting portion includes the first outlet at a center of the connecting portion; the sliding member may include a horizontal portion and a plurality of vertical portions, the level Solidly located on the connecting portion, the horizontal portion including the plurality of lateral sides being guided by the opposite lateral sides of the pair of fastening portions, and the horizontal portion including the second outlet is perpendicularly penetrating the a horizontal portion; and the vertical portions extend vertically downward from opposite ends of the horizontal portion, respectively, and when the horizontal portion slides, the vertical portions are subjected to the connecting portions not connected to the lateral sides of the fastening portions Blocked by the lateral side.

One of the pair of fastening portions may further include a first air inlet penetrating from a lateral side to another lateral side for guiding the lateral side of the sliding member; and the The horizontal portion of the sliding member may include a second air inlet and an air discharge groove, the second air inlet penetrating inward from the lateral side and communicating with the first air inlet; and the air discharge groove is adjacent And the second outlet is formed on the bottom of the horizontal portion to discharge air introduced from the second air inlet to the first outlet formed in the connecting portion of the guiding member.

The sliding member is horizontally reciprocable by air pressure provided from an air path formed in the body holder, as generally fitted in the guiding member; the body holder stably supports the Solder paste container.

A sealing groove may be formed on the bottom of the horizontal portion along an outer circumference of the air discharge groove, and a sealing ring may be inserted in the sealing groove.

1‧‧‧Substrate

2‧‧‧ mask

3‧‧‧匣 Body

3a‧‧‧ solder paste discharge hole

4‧‧‧Squeeze cylinder

5‧‧‧匣 body retainer

5a‧‧‧Exhaust hole

5b‧‧‧Mounting holes

5c‧‧‧air path

5d‧‧‧Protruding

5f‧‧‧Air pressure supply channel

10‧‧‧ Solder paste container

11‧‧‧Opening

12‧‧‧Installation protrusion

12a‧‧‧Guide

13‧‧‧Installation Department

14‧‧‧First support groove

15‧‧‧second support groove

16‧‧‧Coupling protrusion

30‧‧‧Sliding members

31‧‧‧ horizontal department

31a‧‧‧second exit

31b‧‧‧Air discharge groove

31c‧‧‧second air inlet

33‧‧‧Vertical

35‧‧‧Seal ring

36‧‧‧ Sealing groove

50‧‧‧Guide members

51‧‧‧First exit

53‧‧‧ fastening department

53a‧‧‧ lateral side

55‧‧‧Connecting Department

55a‧‧‧Block

57‧‧‧First air inlet

80‧‧‧ inserted holes

81‧‧‧Coupling screw

100‧‧‧Open/close nozzle

From the following description of example embodiments and in conjunction with the drawings, this The above and/or other aspects of the invention will become apparent and easier to understand, in the drawings: Figure 1 is a schematic view of a conventional solder paste supply unit of a general screen printing machine; Figure 2 is based on A cross-sectional view of a solder paste supply unit of a screen printing machine according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view of a body of a solder paste supply unit for a screen printing machine according to an embodiment of the present invention. Figure 4 is a detailed view of a solder paste container according to an embodiment of the present invention; and Figure 5(a) is a detailed view of the guiding member of the opening/closing nozzle used in the embodiment of the present invention, the fifth (b) is a further detailed view of the guiding member of the opening/closing nozzle used in the embodiment of the present invention, and Fig. 6(a) is a sliding of the opening/closing nozzle used in the embodiment of the present invention. A detailed view of the member, and FIG. 6(b) is another detailed view of the sliding member of the opening/closing nozzle used in the embodiment of the present invention; according to an embodiment of the present invention, FIG. 7(a) is opened / Close the assembled view of the nozzle while the solder paste is supplied through the opening/closing nozzle According to an embodiment of the present invention, FIG. 7(b) is another assembled view of the opening/closing nozzle while the solder paste is supplied through the opening/closing nozzle; according to an embodiment of the present invention, FIG. 8(a) is Opening/closing the assembled view of the nozzle while the solder paste is stopped being supplied through the opening/closing nozzle; and according to an embodiment of the present invention, FIG. 8(b) is another assembled view of the opening/closing nozzle, and the solder paste is Stopped supply by opening/closing the nozzle; and in accordance with an embodiment of the present invention, FIG. 9 is for explaining an example A schematic view in which the body of the solder paste supply unit for the screen printing machine is firmly positioned on the body holder.

With respect to the foregoing problems, solutions, and effects, an exemplary embodiment of a cartridge for a solder paste supply unit for a screen printing machine according to the present invention will be described below with reference to the accompanying drawings.

For the convenience and clarity of the description, the dimensions, shapes, and the like of the elements shown in the drawings may be increased. In addition, the terms specifically defined in view of the operation and configuration of the present invention may vary depending on the habit or intention of the user and the operator. The definition of such terms must be based on what is disclosed throughout this specification.

2 is a cross-sectional view of a solder paste supply unit of a screen printing machine to which a cartridge of a solder paste supply unit for a screen printing machine according to an embodiment of the present invention can be mounted.

As shown in Fig. 2, the solder paste supply unit of the screen printing machine according to the embodiment of the present invention includes a cartridge 3, a pressing cylinder 4, and a cartridge holder 5, the cartridge 3 housing the solder paste, the cartridge 3 is opened upward, and the body 3 is formed with a solder paste discharge hole 3a at the center on the bottom thereof; the pressing cylinder 4 is disposed in the upper side of the body 3, and the pressing cylinder 4 presses the solder paste; The body holder 5 securely supports the body 3.

In addition, the cartridge 3 additionally includes an opening/closing nozzle 100 to which the opening/closing nozzle 100 is attached. That is, the cartridge 3 according to an embodiment of the present invention includes a solder paste container and an opening/closing nozzle attached to the bottom of the solder paste container.

The opening/closing nozzle 100 is mounted to the mounting hole 5b, and the mounting hole 5b is formed at the central portion of the cartridge holder 5, and the opening/closing nozzle 100 is used for extruding the solder paste discharge hole 3a from the cartridge 3. The solder paste is discharged in a downward direction, or the nozzle 100 is turned on/off to stop discharging the solder paste. In the example in which the discharge of the solder paste is stopped, the air introduced by the predetermined pressure is discharged in the downward direction, so that the discharge hole 5a of the cartridge holder 5 and the opening/closing nozzle are coated and the residual soldering therein The paste can be completely removed.

First, the solder paste container constituting the body 3 is filled with the solder paste that has been stirred. Specifically, the solder paste container is filled with a predetermined amount of solder paste. Therefore, the supply and remaining amount of the solder paste filled in the solder paste container can be accurately inspected through various sensors.

The opening/closing nozzle 100 mounted to the bottom of the solder paste container may be substantially shaped like a hexahedron or cylinder. In this embodiment, the opening/closing nozzle 100 having a hexahedral shape will be described by way of example.

In short, as shown in FIG. 3, the body of the solder paste supply unit for a screen printing machine according to an embodiment of the present invention includes a solder paste container 10 and an opening/closing nozzle 100, and the opening/closing nozzle 100 is provided. There are a sliding member 30 and a guiding member 50.

As described above, the solder paste container 10 contains the solder paste therein, the solder paste container 10 is opened upward, and the solder paste container 10 is formed with the solder paste discharge holes 3a on the bottom thereof. The aforementioned extrusion cylinder 4 presses the filled solder paste through the opening 11 of the solder paste container 10.

The opening/closing nozzle 100 is detachably mounted to the bottom of the solder paste container 10. The opening/closing nozzle 100 is attached to the bottom of the solder paste container 10 and is opened The opening/closing nozzle 100 is for discharging the solder paste extruded from the solder paste discharge hole 3a of the solder paste container 10 in the downward direction, or opening/closing the nozzle 100 to stop discharging the solder paste.

As described above, in a state where the opening/closing nozzle 100 is attached to the bottom of the solder paste container 10, the cartridge body 3 including the solder paste container 10 and the opening/closing nozzle 100 is firmly positioned on the cartridge holder 5.

As shown in FIGS. 3 and 4, the solder paste container 10 includes an opening 11 opened upward and a guiding portion 12a formed along the top circumference of the solder paste container 10, and the guiding portion 12a has a plurality of portions The projections 12 are mounted opposite each other. The guiding portion 12a is such that the solder paste container 10 on which the opening/closing nozzle 100 is mounted on the bottom of the solder paste container 10 can be slid and moved along a horizontal guide (not shown) formed on the solder paste supply unit . The mounting tab 12 is configured such that the solder paste container 10 can be moved along a horizontal guide (not shown) without rotation.

The solder paste container 10 is formed with a mounting portion 13 that extends vertically downward from the bottom edge of the solder paste container 10. The mounting portion 13 is in contact with the cartridge holder and is firmly positioned on the cartridge holder, which will be described later with reference to FIG.

Meanwhile, the mounting portion 13 includes a pair of first support grooves 14 facing each other, and a second support groove 15 formed between the first support grooves 14. The pair of first support grooves 14 are such that the solder paste container 10 is firmly positioned on the body holder 5, and the pair of first support grooves 14 are simultaneously supported on the protrusions 5d, and the protrusions 5d are formed for An air path 5c formed in the body holder. a second support groove 15 is also executed A function in which the support grooves 14 are the same or similar, which will be described later with reference to FIG.

As shown in FIG. 4, the solder paste container 10 includes a solder paste discharge hole 3a formed at the center on the bottom of the solder paste container 10. Through the solder paste discharge hole 3a, the filled solder paste is extruded in a downward direction. Therefore, according to the operation of opening/closing the nozzle, the extruded solder paste is discharged downward or stopped.

At the same time, the coupling protrusion 16 is formed around the solder paste discharge hole 3a formed on the bottom of the solder paste container 10. The coupling protrusion 16 is disposed such that the guiding member 50 can be coupled to the bottom of the solder paste container 10. In detail, the coupling protrusion 16 is formed to protrude downward, and the coupling protrusion 16 has a hollow shape.

Therefore, the coupling protrusion 16 can be inserted into the insertion hole 80 formed in the guiding member 50 (to be described later) while the coupling protrusion 16 can be surrounded by the insertion hole 80. As a result, the guiding member 50 is fixed so as not to rotate on the bottom of the solder paste container 10. In this state, the coupling screw 81 passes through the insertion hole 80, and the coupling screw 81 is screwed to the coupling protrusion 16 , and the hollow portion of the coupling protrusion 16 is internally threaded, thereby preventing the guiding member. 50 vertical separation and ensure a stable coupling.

Since the coupling screw 81 is screwed to the hollow portion of the coupling protrusion 16, there is no need to worry that the filled solder paste may leak through the hollow portion of the coupling protrusion 16.

With the foregoing structural features, the opening/closing nozzle is detachably coupled to the bottom of the solder paste container 10. Open/close the nozzle package as shown in Figure 3. The guiding member 50 and the sliding member 30 are included.

As shown in FIG. 3, the guiding member 50 is coupled to the bottom of the solder paste container 10, and the guiding member 50 includes a first outlet 51, and the first outlet 51 is vertically aligned with the bottom of the solder paste container 10. The solder paste discharge hole 3a. Since the first outlet 51 is disposed on the same vertical line as the solder paste discharge hole 3a, if there is no shield between the first outlet 51 and the solder paste discharge hole 3a, the solder paste can pass through the first outlet 51 in the downward direction. Discharge, but if there is a shield between the first outlet 51 and the solder paste discharge hole 3a, the solder paste cannot be discharged downward through the first outlet 51. Here, the sliding member 30 functions as such a shield.

As shown in FIG. 3, the sliding member 30 is placed between the bottom of the solder paste container 10 and the guiding member 50. That is, the sliding member 30 is provided to be generally slid as fitted in the guiding member 50. As a result, the sliding member 30 is disposed to slide between the bottom of the solder paste container 10 and the guiding member 50.

The sliding member 30 that slides between the bottom of the solder paste container 10 and the guiding member 50 includes a second outlet 31a, and when the sliding member 30 slides in the first direction (see FIG. 7), the second outlet 31a is located and welded The paste discharge hole 3a and the first outlet 51 are on the same vertical line, but when the sliding member 30 slides in the second direction (see Fig. 8), the second outlet 31a is not located with the solder paste discharge hole 3a and the first outlet 51. The same vertical line.

In the example of sliding in the second direction (see Fig. 8), the second outlet 31a is not located on the same vertical line as the solder paste discharge hole 3a and the first outlet 51.

Therefore, when the sliding member 30 slides in the first direction, the solder paste discharge hole 3a, the second outlet 31a, and the first outlet 51 are disposed on the same vertical line. Thereby, the solder paste in the solder paste container 10 is caused to be discharged in the downward direction through the first outlet 51. On the other hand, when the sliding member 30 slides in the second direction, the solder paste discharge hole 3a and the first outlet 51 are disposed on the same vertical line, but the second outlet 31a is not disposed on the solder paste discharge hole 3a and the first Between the outlets 51, thereby preventing the solder paste in the solder paste container 10 from being discharged in the downward direction through the first outlet 51.

As shown in Figures 3 and 5, the guide member 50 has a general shape like "H". Specifically, the guiding member 50 includes a pair of fastening portions 53 and a connecting portion 55 that connects the pair of fastening portions 53.

The pair of fastening portions 53 are in contact with the bottom surface of the solder paste container 10 and are coupled to the bottom surface of the solder paste container 10. That is, the pair of fastening portions 53 are formed together with the insertion holes 80 such that the coupling protrusions 16 formed on the bottom of the solder paste container 10 can be surrounded by the insertion holes 80 and inserted in the insertion holes 80 Thereby, the bottom of the solder paste container 10 is firmly screwed by the coupling screw.

The pair of fastening portions 53 are spaced apart from each other and disposed in parallel with each other. Further, the pair of fastening portions 53 are connected by a connecting portion 55.

As shown in FIGS. 3 and 5 (that is, (a) of FIG. 5 is a perspective perspective view of the guiding member coupled to the bottom of the solder paste container, and (b) of FIG. 5 is a solid of (a) In perspective view, the connecting portion 55 is a lower end provided to connect the opposite lateral sides 53a of the pair of fastening portions 53. The reason why the lower end of the lateral side 53a of the pair of fastening portions 53 is connected by the connecting portion 55 is because a space must be formed to allow the sliding member 30 to slide therein. That is, the connecting portion 55 connects the lower ends of the lateral sides 53a of the pair of fastening portions 53 to each other, so that the sliding member 30 can be separated from the bottom of the solder paste container 10 at the connecting portion 55. Sliding under the circumstances.

The connecting portion 55 is formed at the center thereof with the aforementioned first outlet 51. The first outlet 51 is always aligned with the same vertical line as the solder paste discharge hole 3a because the guiding member 50 cannot be moved but is fixed on the bottom of the solder paste container 10.

As described above, the sliding member 30 is disposed to be stably positioned on the guiding member 50 including the pair of fastening portions 53 and the connecting portion 55, and the sliding member 30 is disposed to slide on the guiding member 50. That is, the sliding member 30 is firmly positioned on the top of the guiding member 50 by the aforementioned structure, specifically, firmly on the connecting portion 55. The sliding member 30 is firmly seated on the connecting portion 55, and the sliding member 30 is guided by the opposite lateral sides 53a of the pair of fastening portions 53, so that the sliding member 30 can slide.

As shown in FIGS. 3 and 6, the sliding member 30 includes a horizontal portion 31 and a vertical portion 33. (a) of FIG. 6 is a perspective perspective view from the upper side of the sliding member 30, and (b) of FIG. 6 is a perspective perspective view from the lower side of the sliding member 30.

As shown in FIGS. 3 and 6, the sliding member 30 has a substantially shape like "[", and the sliding member 30 includes a horizontal portion 31 and a vertical portion 33 which are respectively downward from the opposite ends of the horizontal portion 31. Extend vertically.

The horizontal portion 31 of the sliding member 30 is firmly positioned on the connecting portion 55 of the guiding member 50, and the horizontal portion 31 has a plurality of lateral sides guided by the opposite lateral sides 53a of the pair of fastening portions 53, and the horizontal portion 31 It is penetrated to form the second outlet 31a.

The horizontal portion 31 of the sliding member 30 is fitted to the connecting portion 55 and the pair The space formed by the opposite lateral sides 53a of the fastening portion 53. The thickness of the horizontal portion 31 is approximately equal to the value obtained by subtracting the thickness of the connecting portion 55 from the height of the lateral side 53a of the fastening portion 53. However, the length of the horizontal portion 31 is shorter than the long side of the fastening portion 53 (that is, the length of the fastening portion in the sliding direction).

When the horizontal portion 31 slides on the guiding member 50 by horizontal reciprocation, when one end of the horizontal portion 31 is aligned with one end of the fastening portion 53 (that is, the end of the long side), the horizontal portion 31 The other end is located in the pair of fastening portions 53 facing each other. The reason why the length of the horizontal portion 31 is shorter than the length of the fastening portion will be described later.

The vertical portions 33 are respectively disposed at both ends of the horizontal portion 31, wherein the vertical portions 33 and the horizontal portion 31 are formed as a single body. That is, the vertical portions 33 extend from the both ends of the horizontal portion 31 in a vertically downward direction (that is, a downward direction when the sliding member 30 is being inserted into the guiding member). Specifically, the vertical portions 33 respectively extend from the both ends of the horizontal portion 31 in the vertically downward direction, to the lateral side 53a of the fastening portion 53, and when the horizontal portion 31 is sliding, the vertical portions 33 are The lateral side of the connecting portion 55 (see 55a in Fig. 6, hereinafter referred to as the blocking portion 55a) is blocked.

As shown in Figs. 3 and 6, the sliding member 30 having this structure includes the second outlet 31a in the horizontal portion 31. The second outlet 31a is not formed at the center in the long side (that is, the direction of the length) of the horizontal portion 31, but the second outlet 31a is offset from the center toward one side.

In detail, when one end of the horizontal portion 31 is aligned with one end of the both ends of the fastening portion 53, the second outlet 31a formed in the horizontal portion 31 communicates with the solder paste discharge hole 3a and the first outlet 51 ( See Figure 7). So when the water When the other end of the flat portion 31 is aligned with the other end of the both ends of the fastening portion 53, the second outlet 31a that is offset from the center of the long side of the horizontal portion 31 toward one side is not in communication with the solder paste discharge hole. 3a and the first outlet 51 (see Figure 8).

In a state in which the opening/closing nozzle including the guiding member 50 and the sliding member 30 is coupled to the bottom of the solder paste container 10 as described above, the sliding member 30 reciprocally slides by an external force such as air pressure, thereby coming from The solder paste of the solder paste container 10 is discharged in a downward direction or the discharge of the solder paste is stopped.

For example, when the sliding member 30 slides in one direction by an external force such as air pressure, one end of the horizontal portion 31 is aligned with one end of both ends of the fastening portion 53, and thus, is formed at the horizontal portion 31. The second outlet 31a is in communication with the solder paste discharge hole 3a and the first outlet 51, whereby the solder paste from the solder paste container is discharged in the downward direction (see Fig. 7).

On the other hand, when the sliding member 30 is slid in the other direction by an external force such as air pressure, the other end of the horizontal portion 31 is aligned with the other end of the both ends of the fastening portion 53, and thus, The second outlet 31a formed in the horizontal portion 31 is not in communication with the solder paste discharge hole 3a and the first outlet 51, thereby stopping the solder paste from the solder paste container in the downward direction (see Fig. 8).

Meanwhile, according to the embodiment of the present invention, the second outlet 31a formed in the horizontal portion 31 slides without communicating with the solder paste discharge hole 3a and the first outlet 51 to stop discharging the solder paste container in the downward direction. At the time of solder paste, an operation is performed to remove the solder paste remaining in the first outlet 51.

To this end, the guiding member 50 constituting the opening/closing nozzle and the sliding member 30 have additional structural features.

In detail, as shown in FIG. 5, the guiding member 50 additionally includes The first air inlet 57, the first air inlet 57 penetrates from one side of one of the pair of fastening portions 53 constituting the guiding member 50 to the other side for guiding the lateral side of the sliding member 30 .

Further, as shown in Fig. 6, the horizontal portion 31 of the sliding member 30 includes a second air inlet 31c and an air discharge groove 31b, and the second air inlet 31c is from a lateral side of the two lateral sides (i.e., from contact Passing inwardly and communicating with the first air inlet 57 on one of the lateral sides of the opposite lateral sides 53a of the pair of fastening portions 53; and the air discharge groove 31b is adjacent to the second outlet 31a and It is formed on the bottom of the horizontal portion 31 to discharge the air introduced from the second air inlet 31c to the first outlet 51 formed on the connecting portion 55 of the guiding member 50.

For example, the horizontal portion 31 of the sliding member 30 additionally includes a second air inlet 31c and an air discharge groove 31b, and when the sliding member 30 is fitted in the guiding member 50 and reciprocates horizontally, the second air inlet 31c communicates with the guiding a first air inlet 57 formed on the fastening portion 53 of the member 50; and an air discharge groove 31b formed on the bottom of the horizontal portion 31 (that is, the surface to be in contact with the fastening portion 53) and adjacent to The second outlet 31a is connected to the second air inlet 31c.

As described above, the air discharge groove 31b is formed on the bottom of the horizontal portion 31 and adjacent to the second outlet 31a. However, the air discharge groove 31b is not a hole similar to the second outlet 31a, but a recessed groove, and the air discharge groove 31b communicates with the second air inlet 31c.

Meanwhile, as shown in Fig. 5, the seal groove 36 is formed on the bottom of the horizontal portion 31 along the outer circumference of the air discharge groove 31b (in Fig. 5) The surface of the horizontal portion shown in (b)), and the seal ring 35 is inserted in the seal groove 36.

When the seal ring 35 is inserted into the seal groove 36, the second outlet 31a is isolated from the outside. Therefore, the solder paste discharged through the second outlet 31a in the downward direction can be prevented from leaking out from the seal ring 35; the air discharged through the air discharge groove 31b in the downward direction can be prevented from leaking out from the seal ring 35; Air can be prevented from being introduced through the air discharge groove 31b and in contact with the solder paste discharge hole 3a to minimize oxidation and deterioration, which will be described later.

In order to hold and support the sliding member 30 in a state in which the sliding member 30 having the foregoing structure is being fitted in the guiding member 50, the sliding member 30 is reciprocated only horizontally, and the coupling protrusion formed on the bottom of the solder paste container 10 is formed. The portion 16 is inserted into the insertion hole 80 formed in the fastening portion 53 of the guide member 50 as described above. In addition, the coupling screw 81 is screwed to the inner hollow portion of the coupling protrusion 15 through the insertion hole 80.

Meanwhile, as shown in Fig. 6, the connecting portion 55 of the guiding member 50 is in contact with the horizontal portion 31 of the sliding member 30; the connecting portion 55 of the guiding member 50 is formed together with the blocking portion 55a at the opposite sides, so that sliding The vertical portion 33 of the member 30 may be blocked by both sides formed by the cutting work (that is, both sides not connected to the inner side 53a of the fastening portion 53); and the connecting portion 55 of the guiding member 50 and the guiding member The first outlets 51 at the center of 50 are formed together to be vertically aligned with the solder paste discharge holes 3a.

The blocking portion 55a formed by cutting the connecting portion 55 (the connecting portion 55 constructs both sides of the guiding member 50 in the form of "[") is a vertical portion 33 provided to block the sliding member 30, so that the sliding member 30 is As assembled in the guide In a state in which the member 50 is generally slid, the sliding member 30 is prevented from moving beyond the guiding member 50.

Next, the operation of discharging the solder paste by the solder paste supply unit of the cartridge and the screen printer will be described in detail, and the solder paste supply unit includes the aforementioned cartridge.

As shown in Figs. 2 and 9, when the air pressure supplied from the air path 5c formed in the body holder 5 presses the vertical portion 33 of the sliding member 30, the sliding member 30 reciprocates horizontally.

First, as shown in (a) of FIG. 7, the air pressure is supplied only to one side of the sliding member, so the second outlet 31a formed in the sliding member 30 can be vertically aligned with the solder paste discharge hole 3a and the first outlet. 51, and therefore, the solder paste which is extruded downward by the solder paste discharge hole 3a formed on the bottom of the solder paste container 10 can pass through the first outlet 51 formed in the connection portion 55 of the guiding member 50 Supply in the downward direction.

Thereafter, as shown in Fig. 7, one vertical portion 33 of the sliding member 30 is blocked by the blocking portion 55a constituting the connecting portion 55 of the guiding member 50, and the other vertical portion 33 is aligned with the fastening constituting the guiding member 50. One end of the portion 53 (that is, one end of the long side).

In this state, as shown in (a) of FIG. 7, the solder paste discharge hole 3a formed on the bottom of the solder paste container 10, the second exit 31a formed in the horizontal portion 30, and the guide member are formed. The first outlets 51 in the connecting portions 55 of 50 are all vertically aligned with each other and in communication with each other. That is, as shown in (b) of FIG. 7, the second outlet 31a of the sliding member 30 and the first outlet 51 of the guiding member 50 are vertically aligned with each other and communicate with each other.

Therefore, the solder paste filled in the solder paste container 10 is squeezed by the squeeze cylinder 4 The solder paste discharge hole 3a formed on the bottom of the solder paste container 10 is pressed, and the extruded solder paste is supplied to the mask 2 through the second outlet 31a of the sliding member 30 and the first outlet 51 of the guiding member 50. .

Here, (a) of FIG. 7 is a top perspective view of the sliding member 30 coupled to the guiding member 50, and is the solder paste discharge hole 3a formed on the bottom of the solder paste container, and the sliding member 30 The two outlets 31a and the first outlets 51 of the guiding member 50 are both vertically aligned with each other and in communication with each other, and (b) of FIG. 7 is a perspective view of the inverted (a) of FIG. .

In short, when the solder paste is discharged downward through the opening/closing nozzle 10, the air pressure is supplied to one of the two vertical portions 33 of the sliding member 30, so that one end of the horizontal portion 31 of the sliding member 30 can be One end of the both ends of the fastening portion 53 constituting the guiding member 50 is aligned, thereby allowing the solder paste discharge hole 3a, the second outlet 31a, and the first outlet 51 to communicate with each other.

Meanwhile, in this state, as shown in (a) of FIG. 7, the first air inlet 57 formed on the fastening portion 53 of the guide member 50 and the second portion formed on the horizontal portion 31 of the sliding member 30 are formed. The air inlets 31c are not aligned with each other (i.e., are not in communication with each other), and therefore, although air having a high pressure is introduced, the air does not escape from the air formed on the horizontal portion 31 of the sliding member 30. The groove 31b leaks out. Of course, when the solder paste is supplied downward through the opening/closing nozzle, air having a high pressure is not introduced through the first air inlet 57.

(a) of Fig. 7 illustrates that the first outlets 51 (see dotted circles) have diameters larger than the second outlets 31a (see solid circles), but actually they may have approximately the same diameter and overlap each other. In addition, The first air inlet 57 and the second air inlet 31c are illustrated as dashed lines because they are actually invisible.

In addition, (b) of FIG. 7 illustrates that the second outlet 31a (see the dotted circle) has a diameter larger than the first outlet 51 (see the solid circle), but actually they may have approximately the same diameter and overlap each other. .

By the foregoing operation, the solder paste can be supplied down to the mask through the opening/closing nozzle. This operation continues while a predetermined pattern is formed on the substrate 1 through the mask 2.

Thereafter, in order to prevent the solder paste from being discharged downward through the opening/closing nozzle, that is, when the opening/closing nozzle 100 blocks the discharge of the solder paste, the air pressure is supplied to the other of the two vertical portions 33 of the sliding member 30. The vertical portion 33 (see the arrow shown in (a) of Fig. 8, that is, opposite to the direction of (a) of Fig. 7), allows the other end of the horizontal portion 31 of the sliding member 30 to be aligned tightly The other end of the both ends of the solid portion 53 thereby prevents the first outlet 51 and the second outlet 31a from communicating with each other, and thus allows the first air inlet 57 and the second air inlet 31c to communicate with each other.

Here, (a) of FIG. 8 is a top perspective view of the sliding member 30 coupled to the guiding member 50, and is formed on the bottom of the solder paste container 10 on the bottom of the solder paste discharge hole 3a and formed on the guide The first outlet 51 on the connecting portion 55 of the member 50 is not vertically aligned (that is, not communicated) in the state of the second outlet 31a formed on the horizontal portion 31 of the sliding member 30, and FIG. (b) is a perspective perspective view of (a) after the flipping of Fig. 8.

In this state, as shown in (a) of Fig. 8, the guiding member The first outlet 51 formed on the connecting portion 55 of 50 is not vertically aligned with and thus does not communicate with the second outlet 31a of the sliding member 30. Therefore, the solder paste discharge holes 3a which are always vertically aligned with the first outlet 51 are not aligned with the second outlet 31a of the sliding member 30, so they are not connected to each other.

As a result, the solder paste extruded through the solder paste discharge hole 3a is blocked by the horizontal portion 31 of the sliding member 30, and thus no solder paste is discharged in the downward direction through the first outlet 51 of the guiding member 50.

That is, as shown in (a) of FIG. 8, the first outlet 51 formed in the connecting portion 55 of the guiding member 50 is not aligned with the second outlet 31a formed in the sliding member 30. Therefore, the top of the connecting portion of the guiding member 50 can be seen through the second outlet 31a. In addition, although (a) of FIG. 8 illustrates that the first outlet 51 and the air discharge groove 31b formed on the bottom of the horizontal portion 31 of the sliding member 30 are vertically aligned with each other, they are not communicated to be discharged downward. The solder paste is extruded because the air discharge groove 31b is not a hole but a recessed groove. However, the first outlet 51 and the air discharge groove 31b communicate with each other for the air passage.

Meanwhile, as shown in (b) of FIG. 8, the air discharge groove 31b communicates with the first outlet 51 formed on the guide member 50 for each other for the air passage. That is, in (b) of Fig. 8, the air discharge groove 31b is visible through the first outlet 51. Further, in (b) of Fig. 8, the second outlet 31a formed in the sliding member 30 is not seen because it is blocked by the guiding member 50. Therefore, the second outlet 31a formed in the sliding member 30 is not shown in broken lines.

The state shown in Figure 8 illustrates that no solder paste is required to be supplied. Turn on/off the underside of the nozzle. That is, the operation of supplying the solder paste to the lower side of the opening/closing nozzle is stopped. In this example, although the horizontal portion 31 of the sliding member 30 blocks the solder paste discharge hole 3a and thus prevents the solder paste from being discharged downward, the solder paste which has not fallen in the last operation may remain in the first outlet 51, And it may remain or be coated on the lower side of the member to which the opening/closing nozzle 100 is mounted, that is, the discharge hole 5a of the cartridge holder 5.

Therefore, the discharge holes 5a of the cartridge holder 5 and the solder paste applied on the first outlet 51 or remaining therein must be cleaned and removed. The reason is because the residual solder paste may fall at an undesired time or position, thus causing defects in the patterning of the solder paste on the substrate, and acting as a contaminant.

To this end, as described above, a first air inlet 57 is provided which penetrates from a lateral side of one of the pair of fastening portions 53 constituting the guiding member 50 to guide The other lateral side of the lateral side of the sliding member 30; the second air inlet 31c, the second air inlet 31c being disposed on the lateral side of the horizontal portion 31 of the sliding member 30 and communicating with the first air inlet 57; and the air discharge groove 31b, The air discharge groove 31b is adjacent to the second outlet 31a and formed on the bottom of the horizontal portion 31 to discharge the air introduced from the second air inlet 31c to the first outlet 51 of the guiding member 50.

With this configuration, in order to clean and remove the residual solder paste, in the state shown in (a) of FIG. 8, the air pressure is supplied through the first air inlet 57 so that the air pressure can pass through the second air inlet 31c and The air discharges the groove 31b and is discharged in the downward direction of the opening/closing nozzle. Therefore, the solder paste remaining in the first outlet 51 can be removed.

Supplying air pressure through the first air inlet 57 through the body The air pressure supply passage formed in the holder 5 (see 5f of Fig. 9) is provided. That is, the air pressure supply passage 5f and the first air inlet 57 communicate with each other, and an external air pressure supply mechanism (not shown) and an opening/closing portion (not shown) are appropriately controlled to supply air having a predetermined pressure. The first air inlet 57 is given.

Fig. 9 illustrates an example in which the body of the solder paste supply unit for a screen printing machine according to an exemplary embodiment is firmly positioned on the body holder.

The carcass holder has a structure of three protrusions 5d, wherein two of the three protrusions 5d are air passages 5c internally provided with a body holder for supplying air pressure to the sliding member 30, and another One projection is provided with the aforementioned air pressure supply passage 5f.

By applying one of the two air passages 5c, the sliding member 30 can open or close the passage for discharging the solder paste. In addition, the air pressure is supplied to the air pressure supply passage 5f in a state where the sliding member blocks the discharge of the solder paste, thereby removing the solder paste remaining in the first outlet.

At the same time, the aforementioned mounting portion 13 of the solder paste container 10 includes two first support grooves 14 and one second support groove 15 to be stably positioned on the three protrusions.

As described above, in the body of the solder paste supply unit for a screen printing machine according to an embodiment of the present invention, the opening/closing nozzle is appropriately adjusted so that the solder paste can be accurately supplied to the cover provided on the substrate. a cover, and when the operation of supplying the solder paste is stopped, the solder paste remaining in the opening/closing nozzle can be cleaned and removed, thereby preventing the problem from occurring and preventing the contamination during the process. Dyed matter.

According to an embodiment of the present invention, the body of the solder paste supply unit for the screen printing machine is firmly positioned on the body holder of the solder paste supply unit constituting the screen printing machine, the body including the opening/closing nozzle Is detachably coupled to the bottom of the solder paste container to discharge the solder paste so that when the solder paste is discharged downward through the opening/closing nozzle, the opening/closing nozzle can be turned on, but when the solder paste is prevented from passing through/off When the nozzle is discharged downward, the opening/closing nozzle can be closed, and at the same time, air pressure can be supplied to clean and remove the solder paste.

While a few exemplary embodiments of the present invention have been shown and described, it will be understood by those skilled in the art It is within the scope of the appended claims and their equivalents.

3a‧‧‧ solder paste discharge hole

10‧‧‧ Solder paste container

11‧‧‧Opening

12‧‧‧Installation protrusion

12a‧‧‧Guide

14‧‧‧First support groove

15‧‧‧second support groove

31‧‧‧ horizontal department

31a‧‧‧second exit

31b‧‧‧Air discharge groove

31c‧‧‧second air inlet

33‧‧‧Vertical

51‧‧‧First exit

53‧‧‧ fastening department

53a‧‧‧ lateral side

55‧‧‧Connecting Department

55a‧‧‧Block

57‧‧‧First air inlet

80‧‧‧ inserted holes

81‧‧‧Coupling screw

100‧‧‧Open/close nozzle

Claims (6)

A solder paste supply unit for a screen printing machine, the cartridge comprising: a solder paste container, the solder paste container containing a solder paste, the solder paste container being opened upward, and the solder paste container comprises a solder paste discharge hole on a bottom of the solder paste container; and an opening/closing nozzle coupled to the bottom of the solder paste container, the opening/closing nozzle from the solder paste container The solder paste extruded from the solder paste discharge hole is discharged in a downward direction, or the on/off nozzle prevents the solder paste from being discharged. The cartridge of claim 1, wherein the opening/closing nozzle comprises: a guiding member coupled to the bottom of the solder paste container, and the guiding member includes a first outlet, a first outlet formed on a same vertical line as the solder paste discharge hole; and a sliding member disposed to be generally slid as fitted in the guiding member, and the sliding member includes a second outlet The second outlet is located on the same vertical line as the solder paste discharge hole and the first outlet when the sliding member slides in one direction, or the second outlet when the sliding member slides in the other direction It is not located on the same vertical line as the solder paste discharge hole and the first outlet. The body of claim 2, wherein the guiding member comprises a pair of fastening portions and a connecting portion, the pair of fastening portions Touching the bottom of the solder paste container and coupling to the bottom of the solder paste container, and the pair of fastening portions are disposed in parallel to be spaced apart from each other, and the connecting portion is formed to connect the pair of fastening portions a lower end of the lateral side, and the connecting portion includes the first outlet at a center of the connecting portion; the sliding member includes a horizontal portion and a plurality of vertical portions, the horizontal portion is stably located on the connecting portion, the level The portion including the plurality of lateral sides is guided by the opposite lateral sides of the pair of fastening portions, and the horizontal portion includes the second outlet vertically penetrating the horizontal portion; and the vertical portions are from the level The opposite ends of the portion extend vertically downward, respectively, and when the horizontal portion slides, the vertical portions are blocked by lateral sides of the connecting portions that are not connected to the lateral sides of the fastening portions. The cartridge of claim 3, wherein a fastening portion of the pair of fastening portions further includes a first air inlet penetrating from a lateral side to guide the sliding member The other lateral side of the lateral side; and the horizontal portion of the sliding member includes a second air inlet and an air discharge groove, the second air inlet penetrating inwardly from the lateral side and communicating with the first air inlet And the air discharge groove is adjacent to the second outlet and formed on the bottom of the horizontal portion to discharge air introduced from the second air inlet to the connecting portion formed in the guiding member The first exit. The cartridge of claim 3, wherein the sliding member reciprocates horizontally by air pressure provided from an air path formed in the cartridge holder, as generally fitted in the guiding member The cartridge holder securely supports the solder paste container. The cartridge of claim 4, wherein a sealing groove is formed on the bottom of the horizontal portion along an outer circumference of the air discharge groove, and a sealing ring is inserted in the sealing groove.