KR102311416B1 - Sealing unit with increased sealing flatness and sealing flatness setting method utilizing the same - Google Patents

Abstract

An objective of the present invention is to provide a sealing unit with improved sealing flatness, and according to the present invention, the sealing unit with improved sealing flatness includes: a main frame (20); an upper sealing assembly (30) in which an upper sealing bar (34) is coupled to an upper heating block (32); a lower sealing assembly (40) in which a lower sealing bar (44) is coupled to a lower heating block (42), and the lower sealing bar (44) is disposed at a position facing the upper sealing bar (34) from a lower side; an upper flatness adjustment bolt (36) coupled to the upper heating block (32), and disposed at a position facing a top surface of the upper sealing bar (34); and a stopper (50) provided on the main frame (20) to support the upper sealing assembly (30).

Description

A sealing unit with improved sealing flatness and a sealing flatness setting method using the same {Sealing unit with increased sealing flatness and sealing flatness setting method utilizing the same}

The present invention relates to a sealing unit with improved sealing flatness and a sealing flatness setting method. It relates to a sealing unit with improved sealing flatness of a new configuration capable of forming a sealing portion of uniform thickness in the inlet portion of the pouch, and a sealing flatness setting method.

In the secondary battery, a battery cell in which a separator is stacked between a plurality of positive and negative plates is put into a pouch, and electrode tabs connected to the positive and negative plates of the battery cells protrude to the outside of the pouch. That is, after the battery cell is formed, a subsequent process such as a process of putting the battery cell into a pouch and sealing it is performed to manufacture a secondary battery. At this time, it is necessary to seal the inlet of the pouch into which the battery cell is inserted. Using a pouch sealing device, heat sealing the inlet of the pouch in which the battery cell is inserted is performed.

A pouch sealing device has been developed and used to seal the inlet portion of the pouch for secondary batteries.

However, in the prior art, there is a problem in that the sealing thickness varies greatly after sealing the inlet portion of the pouch and it is difficult to control the thickness. Severe variation in the sealing thickness of the pouch means that the secondary battery pouch is defective. In addition, the existing method of collecting the shim when adjusting the sealing thickness of the pouch has a problem in that it must be reset from the beginning when installing after removing the sealing bar. takes

In order to solve this problem, a sealing unit for adjusting the sealing flatness of the inlet of the pouch is provided.

The sealing unit for sealing the secondary battery pouch includes an upper upper sealing part and a lower lower sealing part.

The upper sealing part is interposed on the surfaces facing each other in the first upper block 112A and the second upper block 112B, and the first upper block 112A and the second upper block 112B, the middle part of which is connected by a hinge. at least one pair of hinge fixing bolts 112BT and 122BT, the upper heating block 113 provided on the lower surface of the first upper block 112A, and the upper heating block 113 provided on the lower surface The upper sealing bar 114, the upper sealing surface 102SF provided on the lower surface of the upper sealing bar 114, and a pair of left and right upper stoppers 115 provided on the lower surface of the upper sealing bar 114, include

The lower sealing portion is interposed on the surfaces facing each other in the first lower block 122A and the 21st lower block 122B, and the first lower block 122A and the 21st lower block 122B connected to the center by a hinge. at least one pair of hinge fixing bolts 112BT and 122BT, a lower heating block 123 provided on the upper surface of the 21st lower block 122B, and a lower heating block 123 provided on the upper surface of the lower heating block 123. It is provided on the lower sealing bar 124, the lower sealing surface 102SF provided on the upper surface of the lower sealing bar 124 and facing the upper sealing surface 102SF, and the upper surface of the lower sealing bar 124. and a pair of left and right lower stoppers 125 disposed to face the pair of upper stoppers 115 .

According to the sealing unit, when the inlet portion of the pouch rests on the lower sealing surface 102SF of the lower sealing bar 124, the upper sealing portion comes down and the upper sealing surface 102SF of the upper sealing bar 114 is the lower sealing surface. In a state in which the inlet portion of the pouch is pressed together with the lower sealing surface 102SF of the bar 124 at a certain pressure, the heat from the upper heating block 113 and the lower heating block 123 is generated by the upper sealing bar 114 and It is transferred to the lower sealing bar 124 to hot seal the inlet portion of the pouch. The hot-sealed portion of the pouch is the sealing surface 102SF.

At this time, since the stopper protrudes from the sealing surface 102SF, when the stopper contacts the sealing surface 102SF, a gap is created and a sealing thickness equal to the gap can be implemented. That is, the lower end of the upper stopper 115 protrudes further down than the upper sealing surface 102SF of the upper sealing bar 114, and the upper end of the lower stopper 125 is the lower sealing surface of the lower sealing bar 124 ( 102SF), so that when the lower end of the upper stopper 115 and the upper end of the lower stopper 125 contact each other, a gap is formed between the upper sealing surface 102SF and the lower sealing surface 102SF, such a gap It is possible to determine the thickness of the sealing surface 102SF of the inlet portion of the pouch by the thickness of the pouch.

However, the structure of the currently used sealing unit has difficulties in setting methods for maintaining flatness. The flatness maintenance refers to maintaining the flatness of the upper sealing surface 102SF of the upper sealing bar 114 and the lower sealing surface 102SF of the lower sealing bar 124, and the structure of the current sealing unit is such a flat There is a difficulty in the setting method to maintain the figure.

The cause of the difficulty of the setting method for maintaining the flatness is the stopper mounted on the sealing bar (ie, the upper sealing bar 114 and the lower sealing bar 124).

When a force (pressing force: about 500 kgf) is applied to the sealing unit when sealing the pouch, the stoppers on both sides support both ends. There is a problem that the thickness is not uniform. When supported by the stoppers installed on both sides of the sealing bar (that is, when supported by the upper stopper 115 and the lower stopper 125), delivered from the center of the upper sealing bar 114 and the lower sealing bar 124 Since the upper stopper 115 and the lower stopper 125 support the applied force, the deformation of the central portion of the upper sealing bar 114 and the lower sealing bar 124 increases, so that the upper sealing bar 114 and the lower sealing bar 124 ) of the gap between the upper sealing surface 102SF and the lower sealing surface 102SF, a deformation occurs in which the gap in the middle becomes relatively narrower. The thickness of the middle portion of the upper sealing surface 102SF of the upper sealing bar 114 and the lower sealing surface 102SF of the lower sealing bar 124 is the most severe. The thickness changes by more than 20 μm.

Therefore, when the sealing surface 102SF is formed in the inlet portion of the pouch by hot sealing, there is a problem that the middle portion of the sealing portion becomes the thinnest. That is, the sealing thickness of the sealing surface 102SF of the pouch is not uniform.

As shown in FIG. 2 , the upper sealing bar 114 and the lower sealing bar 124 are deformed in a shape in which the middle portion is convex. FIG. 2 conceptually illustrates that the middle portion of the upper sealing bar 114 and the lower sealing bar 124 is deformed into a convex shape. When the pouch is sealed in this deformed state, as shown in FIG. 3 , the thickness of the central portion of the sealing surface 102SF of the pouch is thin, and the thickness of both ends of the sealing portion 102SF is the sealing surface. It occurs relatively thicker than the thickness of the central part of (102SF). In FIG. 3 , in a state in which the central portion of the upper sealing bar 114 and the lower sealing bar 124 is convex and the sealing portion is formed in the pouch, the thickness of the middle portion of the sealing portion 102SF is relatively thin and the sealing portion 102SF ) is conceptually shown that the thickness of both ends is formed to be relatively small. As such, when the thickness of the middle portion of the pouch sealing portion 102SF is relatively thinner than the thickness of both end portions, the pouch is defective.

Korea Registered Utility Model No. 20-0228354 (Registered on Dec. 12, 2001) Korea Public Utility Model No. 20-1999-0031053 (published on July 26, 1999) Korean Patent Registration No. 10-0478100 (Registered on March 11, 2005) Korean Patent Registration No. 10-1307876 (Registered on Sep. 6, 2013)

The present invention has been developed to solve the above problems, and an object of the present invention is to prevent a case in which the sealing bar sealing the inlet portion of the secondary-only pouch fails to evenly seal the inlet portion of the pouch due to thermal deformation. To provide a sealing unit with improved sealing flatness and a sealing flatness setting method of a new configuration that can form a sealing portion of a uniform thickness in the inlet portion of the pouch in a state where the flatness of the sealing bar is uniformly set will be.

According to the present invention for solving the above problems, the main frame; an upper sealing assembly in which an upper sealing bar is coupled to an upper heating block; a lower sealing assembly in which a lower sealing bar is coupled to a lower heating block and the lower sealing bar is disposed at a position facing the upper sealing bar from below; an upper flatness adjusting bolt coupled to the upper heating block and disposed at a position facing the upper surface of the upper sealing bar; There is provided a sealing unit with improved sealing flatness comprising a; a stopper provided on the main frame to support the upper sealing assembly.

A lower flatness adjusting bolt coupled to the lower heating block and disposed at a position facing the lower surface of the lower sealing bar; characterized in that it further comprises.

The stopper may support and support the upper sealing assembly so that a distance between the upper sealing surface of the lower surface of the upper sealing bar and the lower sealing surface of the upper surface of the lower sealing bar is set.

The upper sealing assembly further includes a bearing housing provided on the upper surface of the upper heating block, and a support frame connected to the bearing housing by a hinge and connected to the main frame so as to be elevated by a guide means, and the stopper is It is characterized in that it is configured to be disposed at a position supporting the bottom surface of the support frame.

The stopper is characterized in that it comprises a stopper body provided with a dial, and a stopper bolt that is lifted from below the support frame with respect to the stopper body by the operation of the dial.

The stoppers are characterized in that at least one pair is arranged under the support frame.

The upper heating block is provided with a sealing bar seating groove on the front or rear side, the upper sealing bar is accommodated in the sealing bar seating groove, and the upper sealing bar is fixed to the sealing bar seating groove by a fixing bolt. do.

The lower heating block is provided with a sealing bar seating groove on the front or rear side, the lower sealing bar is accommodated in the sealing bar seating groove, and the lower sealing bar is fixed to the sealing bar seating groove by a fixing bolt. do.

According to the present invention, a heating step of heating the upper sealing bar and the lower sealing bar in a state in which the upper sealing surface and the lower sealing surface of the upper sealing bar and the lower sealing bar supported by the main frame of the sealing unit are arranged to face each other; an adjustment bolt release step of loosening the upper flatness adjustment bolt and the lower flatness adjustment bolt from the upper heating block and the lower heating block to which the upper sealing bar and the lower sealing bar are coupled; a stopper spacing step of descending the upper end of the stopper bolt of the stopper provided in the main frame to be spaced a predetermined distance downward from the support frame coupled to the upper heating block; disposing a feeler gauge between the upper sealing surface and the lower sealing surface of the upper sealing bar and the lower sealing bar; an upper flatness adjusting bolt fastening step of tightening the upper flatness adjusting bolt coupled to the upper heating block so that the lower end of the upper flatness adjusting bolt is in contact with the upper surface of the upper sealing bar; a lower flatness adjusting bolt fastening step of tightening the lower flatness adjusting bolt coupled to the lower heating block so that the upper end of the lower flatness adjusting bolt is in contact with the upper surface of the lower sealing bar; a stopper fastening step of raising the upper end of the stopper bolt of the stopper provided in the main frame to contact the bottom surface of the support frame coupled to the upper heating block; a pouch sealing step of forming a hot-sealed sealing part in the pouch in a state where a portion of a predetermined width adjacent to the inlet of the pouch is disposed between the upper sealing surface and the lower sealing surface in a state in which the feeler gauge is removed; a sealing part checking step of measuring the thickness of the sealing part of the pouch; a sealing part target thickness setting step of adjusting the stopper bolt of the stopper to set the thickness of the sealing part of the pouch to a desired thickness; There is provided a sealing flatness setting method comprising the; sealing portion thickness adjustment step of adjusting the thickness of the sealing portion of the pouch by operating the upper flatness adjustment bolt and the lower flatness adjustment bolt.

The adjusting bolt release step is to loosen the fixing bolt for fixing the upper sealing bar to the upper heating block, and to loosen the fixing bolt for fixing the lower sealing bar to the lower heating block, the upper flatness adjustment bolt and the lower flatness Also characterized in that it is configured to loosen the adjustment bolt.

In the upper flatness adjusting bolt fastening step, tighten the fixing bolt so that the upper sealing bar is fixed to the upper heating block, and in the lower flatness adjusting bolt fastening step, tighten the fixing bolt so that the lower sealing bar is fixed to the lower heating block It is characterized in that it is configured to be written.

In the sealing unit with improved sealing flatness according to the present invention, the stopper is mounted on the main frame avoiding the upper sealing bar and the lower sealing bar, and a pair of stoppers are supporting at least the left and right sides of the upper support frame in the upper sealing assembly. , even when the force pressing the upper and lower surfaces of the pouch is applied by the upper sealing bar and the lower sealing bar, the upper sealing bar and the lower sealing bar do not receive a force, so that the upper sealing surface and the lower sealing surface are not deformed and a uniform gap can be maintained. , by maintaining a uniform gap without deformation of the upper sealing surface of the upper sealing bar and the lower sealing surface of the lower sealing bar, the thickness of the sealing surface of the pouch can be maintained uniformly, and furthermore, the thickness of the sealing surface of the pouch is non-uniform Defects of the pouch can be prevented.

1 is a front view schematically showing the structure of a conventional pouch sealing unit;
FIG. 2 is a front view schematically showing a deformed state of an upper sealing bar and a lower sealing bar of the pouch sealing unit shown in FIG. 1; FIG.
3 is a view schematically showing a sealing part of a pouch formed by the pouch sealing unit shown in FIG. 1;
4 is a front view showing the main part structure of the sealing unit with improved sealing flatness according to the present invention;
5 is a side view showing an enlarged structure of the stopper, which is a main part shown in FIG.
Fig. 6 is a side view showing the stopper shown in Fig. 5;
7 is a cross-sectional view showing the internal structure of the stopper shown in FIG.
8 is an enlarged front view of the main part of the sealing unit with improved sealing flatness according to the present invention;
9 is a front view showing the upper sealing block, the upper sealing bar, the lower heating block, and the lower sealing bar shown in FIG.
10 is a front view showing an upper sealing block, an upper sealing bar, a lower heating block, and a lower sealing bar shown in FIG. 9 and an enlarged view showing a cross section taken along line AA;
11 is a side view showing a state in which the stopper bolt, which is a main part of the stopper shown in FIG. 5, is lowered from the bottom surface of the upper support frame, which is a configuration of the upper sealing part;
12 is a front view showing a state in which a feeler gauge is inserted between the upper sealing bar and the lower sealing bar shown in FIG. 9;
13 is a front view showing a state in which a feeler gauge is inserted between the upper sealing bar and the lower sealing bar shown in FIG. 12 and an enlarged view showing a cross-section taken along line BB;
14 is a front view showing a state in which a feeler gauge is inserted between the upper sealing bar and the lower sealing bar shown in FIG. 13 and an enlarged view showing a cross-section taken along line CC;
15 is a side view showing a state in which the stopper bolt, which is a main part of the stopper shown in FIG. 11, is raised to contact the bottom surface of the upper support frame, which is a configuration of the upper sealing part;
16 is a front view schematically showing a portion for adjusting the thickness of the sealing portion of the pouch by the sealing unit with improved sealing flatness according to the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objects, features and advantages of the present invention will be more readily understood by referring to the accompanying drawings and the following detailed description. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. For example, when a component is described as being “connected” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It should be understood that elements may be “connected,” “coupled,” or “connected.”

Referring to the drawings, in the sealing unit with improved sealing flatness of the present invention, the main frame 20 and the upper sealing bar 34 are coupled to the upper heating block 32 , and the upper sealing bar 34 is coupled to the main frame 20 to be elevating. The upper sealing assembly 30 and the lower sealing bar 44 are coupled to the lower heating block 42 so that the lower sealing bar 44 is disposed at a position facing the upper sealing bar 34 from below, and the main frame The lower sealing assembly 40 coupled to the upper and lower sealing units 20, and the upper flatness adjusting bolt 36 coupled to the upper heating block 32 and disposed at a position facing the upper surface of the upper sealing bar 34 and a stopper 50 provided on the main frame 20 to support the upper sealing assembly 30 . In addition, the present invention further includes a lower flatness adjusting bolt 46 coupled to the lower heating block 42 and disposed at a position facing the bottom of the lower sealing bar 44 . In the present invention, the stopper 50 does not depend on the upper sealing bar 34 and the lower sealing bar 44, but the stopper 50 is mounted on the main frame 20 (Sealing Unit Frame) to achieve sealing flatness (pouch). The main feature is that it is possible to maintain the sealing flatness of the sealing part 2SP.

The main frame 20 includes a bottom frame portion, an upright frame portion, and a pouch frame portion. The upright frame part is erected in a vertical direction from the bottom frame part, and the pouch frame part is disposed in front of the upright frame part.

An upper sealing assembly 30 and a lower sealing assembly 40 are coupled to the main frame 20 . The upper sealing assembly 30 and the lower sealing assembly 40 are configured to be vertically coupled to the main frame 20 by an elevation operation unit.

The upper sealing assembly 30 has a configuration in which the upper sealing bar 34 is coupled to the upper heating block 32 .

The upper heating block 32 is configured in a hexahedral block shape. The upper heating block 32 has a heating means such as a heating wire, not shown, is built in, and is configured to be heated by the heat of the heating means. At this time, the bearing housing 31 is provided on the upper surface of the upper heating block 32, the upper support frame 33 is connected to the bearing housing 31 by a hinge, and the upper support frame 33 is the LM guide. It is coupled to the upright frame portion of the main frame 20 by the elevating guide portion such as. It becomes a structure in which the upper sealing assembly 30 is coupled to the main frame 20 to be liftable.

The upper sealing bar 34 is configured in a hexahedral block shape. An upper sealing bar 34 is disposed on the lower surface of the upper heating block 32 . The upper heating block 32 is provided with a sealing bar seating groove on the front side, the upper sealing bar 34 is accommodated in the sealing bar seating groove, and the upper sealing bar 34 is a sealing bar by a fixing bolt FB. fixed to the mounting groove. A fixing bolt (FB) is inserted into the bolt coupling hole penetrating through the front and rear surfaces of the upper sealing bar (34), and is fastened to the sealing bar seating groove of the upper heating block (32), whereby the lower surface of the upper heating block (32) The upper sealing bar 34 is coupled to the structure. The fixing bolts FB are arranged in a horizontal direction when viewed from one side of the upper sealing bar 34 . In addition, the top frame 37 is connected to the lifting operation part (a well-known lifting operation part such as a cylinder or a motor and a crank, detailed description thereof will be omitted) provided in the main frame 20, and the top frame ( 37 is provided with a cylinder 38 . The cylinder 38 is provided on both left and right bottom surfaces of the top frame 37 , and the cylinder rods of the pair of cylinders 38 are connected to the upper support frame 33 . The upper support frame 33 , the bearing housing 31 , the upper heating block 32 , and the upper sealing bar 34 are configured to be lifted by the operation of the cylinder 38 . That is, the upper sealing assembly 30 may be lifted/lowered by the operation of the cylinder 38 . Of course, the upper sealing assembly 30 is configured to be lifted by a lifting operation unit (elevating operation unit such as a cylinder or a motor and a crank) mounted on the main frame 20 . The lifting operation unit mounted on the main frame 20 may raise and lower the top frame 37 , the cylinder, and the upper sealing assembly 30 together.

The lower surface of the upper sealing bar 34 is the upper sealing surface 34SF for forming the sealing part 2SP on the sealing object (pouch). The upper sealing surface 34SF is configured as a flat surface to uniformly contact one surface of the pouch.

The upper surface of the upper sealing bar 34 is disposed under the heating block 22 in a state in which the upper surface faces the lower surface of the upper heating block 32 . The upper sealing bar 34 is heated by receiving heat from the upper heating block 32 . A space is secured between the lower surface of the upper heating block 32 and the upper surface of the upper sealing bar 34 . The space is a space spaced apart a certain distance between the upper sealing bar 34 and the upper heating block (32).

The upper flatness adjusting bolt 36 is rotatably coupled to the upper heating block 32 in the upper sealing assembly 30 . The upper heating block 32 is provided with a plurality of concave grooves (three concave grooves) along the width direction, and a bolt hole is provided so as to communicate with the bottom surface of the upper heating block 32 from the bottom of the concave groove, and the An upper flatness adjustment bolt 36 is rotatably coupled to the bolt hole. A part of the upper flatness adjusting bolt 36 is protruded from the concave groove, and the lower end of the upper flatness adjusting bolt 36 is disposed at a position facing the upper surface of the upper sealing bar 34 . The upper flatness adjusting bolt 36 is configured to press the upper surface of the upper sealing bar 34 with a constant pressure as the upper flatness adjusting bolt 36 is rotated and lowered. The upper flatness adjustment bolt 36 is provided in plurality.

The upper flatness adjusting bolt 36 is coupled to the bolt hole communicating with the upper and lower surfaces inside the upper heating block 32, and in the upper heating block 32 according to the rotation of the upper flatness adjusting bolt 36 The upper flatness adjustment bolt 36 is lifted. The lower end of the upper flatness adjusting bolt 36 is disposed in a direction facing the upper surface of the upper sealing bar 34 . The upper flatness adjusting bolt 36 presses the upper surface of the upper sealing bar 34 downward with a predetermined pressure, so that the upper sealing surface 34SF of the upper sealing bar 34 and the lower sealing surface of the lower sealing bar 44 are pressed. It functions to control the thickness of the gap between (44SF).

The lower sealing assembly 40 has a configuration in which the lower sealing bar 44 is coupled to the lower heating block 42 .

The lower heating block 42 is also configured in a hexahedral block shape. A heating means such as a heating wire is built in the lower heating block 42 as well, and is configured to be heated by the heat of the heating means. At this time, a lower support frame 43 is provided on the bottom surface of the lower heating block 42, and the lower support frame 43 is coupled to the upright frame portion of the main frame 20 by an elevating guide portion such as an LM guide. . It becomes a structure in which the lower sealing assembly 40 is coupled to the main frame 20 to be liftable.

The lower sealing bar 44 is configured in a hexahedral block shape. A lower sealing bar 44 is disposed on the upper surface of the lower heating block 42 . The upper surface of the lower sealing bar 44 is a lower sealing surface 44SF, and is disposed at a position where the lower sealing surface 44SF faces the upper sealing surface 34SF of the upper sealing bar 34 . The lower heating block 42 is provided with a sealing bar seating groove on the front side, the lower sealing bar 44 is accommodated in the sealing bar seating groove, and the lower sealing bar 44 is a sealing bar by a fixing bolt FB. fixed to the mounting groove. A fixing bolt (FB) is inserted into the bolt coupling hole penetrating through the front and rear surfaces of the lower sealing bar (44), and is fastened to the sealing bar seating groove of the lower heating block (42), whereby the bottom surface of the lower heating block (42) The lower sealing bar 44 is coupled to the structure. The fixing bolt FB is disposed in a horizontal direction when viewed from one side of the lower sealing bar 44 . In addition, the lower support is provided on the lifting operation part (a known lifting operation part such as a cylinder or a motor and a crank for raising and lowering the upper sealing assembly 30) provided in the main frame 20, and a detailed description thereof is also omitted). The frame 43 is connected so that the lower support frame 43, the lower heating block 42, and the lower sealing bar 44 can be lifted by the operation of the lifting operation unit. That is, the lower sealing assembly 40 may be lifted by the operation of the lifting operation unit. In the present invention, the upper sealing assembly 30 and the lower sealing assembly 40 may be configured to move closer to each other or move away from each other by the operation of the lifting operation unit provided in the main frame 20 . Of course, in a state in which the lower sealing assembly 40 is fixed to the main frame 20 , the upper sealing assembly 30 is lowered toward the lower sealing assembly 40 by the operation of the lifting operation unit, or the lower sealing assembly 40 is removed from the lower sealing assembly 40 . It may be configured to rise upwards.

The lower surface of the lower sealing bar 44 is disposed below the upper sealing bar 34 in a state in which it faces the upper surface of the lower heating block 42 . The lower sealing bar 44 is heated by receiving heat from the lower heating block 42 . The upper surface of the lower sealing bar 44 is a lower sealing surface 44SF for forming the sealing part 2SP on the sealing object (pouch). The lower sealing surface 44SF is configured as a flat surface to uniformly contact the other surface of the pouch. In order to form the sealing part 2SP at the inlet of the pouch, the upper sealing surface 34SF of the upper sealing bar 34 is in contact with a portion of the upper surface adjacent to the inlet of the pouch, and the lower sealing surface 44SF of the lower sealing bar 44 The silver is in contact with a portion of the lower surface adjacent to the inlet of the pouch. A space is secured between the lower surface of the lower heating block 42 and the upper surface of the lower sealing bar 44 . The space is a space spaced apart by a predetermined distance between the lower sealing bar 44 and the lower heating block (42).

The lower flatness adjusting bolt 46 is rotatably coupled to the lower heating block 42 constituting the lower sealing assembly 40 . The lower heating block 42 is provided with a plurality of concave grooves (three concave grooves) along the width direction, and a bolt hole is provided so as to communicate from the upper surface of the concave groove to the upper surface of the lower heating block 42, the bolt A lower flatness adjusting bolt 46 is rotatably coupled to the hole. A part of the lower flatness adjusting bolt 46 is protruded from the concave groove, and the upper end of the lower flatness adjusting bolt 46 is disposed at a position facing the lower surface of the lower sealing bar 44 . As the lower flatness adjusting bolt 46 is rotated and raised, the lower surface of the lower sealing bar 44 is configured so that the lower flatness adjusting bolt 46 can be pressed with a constant pressure. A plurality of lower flatness adjusting bolts 46 are provided.

The lower flatness adjustment bolt 46 is coupled to the bolt hole communicating with the upper surface and the lower surface inside the lower heating block 42, and in the lower heating block 42 according to the rotation of the lower flatness adjustment bolt 46 The lower flatness adjusting bolt 46 is lifted. The upper end of the lower flatness adjusting bolt 46 is disposed in a direction facing the lower surface of the lower sealing bar 44 . The lower flatness adjusting bolt 46 presses the lower surface of the lower sealing bar 44 upward with a certain pressure, so that the upper sealing surface 34SF of the upper sealing bar 34 and the lower sealing surface of the lower sealing bar 44 ( 44SF) and functions to control the thickness of the gap between them.

A lower support frame 43 is connected to the bottom surface of the lower heating block 42 , and the lower support frame 43 is coupled to an upright frame portion of the main frame 20 by an elevating guide portion such as an LM guide. It becomes a structure in which the lower sealing assembly 40 is coupled to the main frame 20 to be liftable. That is, the upper sealing assembly 30 and the lower sealing assembly 40 are elevatingly coupled to the upright frame part constituting the main frame 20 , and the upper sealing assembly 30 and the lower sealing assembly 40 are The elevating operation unit mounted on the main frame 20 may move in a direction adjacent to each other and away from each other in a direction facing each other. In the present invention, the lifting operation unit may be configured as a driving cam. The driving cam is connected to the motor shaft of the motor, and the upper sealing assembly 30 and the lower sealing assembly 40 are connected to the driving cam by a link or the like (in the present invention, the top frame 37 is connected to the driving cam via a link, etc.) ) and the lower support frame 43 are connected), and according to the rotation of the driving cam 30, the upper sealing assembly 30 and the lower sealing assembly 40 can move in a direction close to each other or move in a direction away from each other. have. The lifting operation unit may be configured to elevate at least one of the upper sealing assembly 30 and the lower sealing assembly 40 . At this time, since the lifting operation unit is any means for moving the upper sealing assembly 30 and the lower sealing assembly 40 closer to or farther apart in addition to the driving cam 30 and the link, any means for moving the upper sealing assembly 30 and the lower sealing assembly 40 can be employed. is to be omitted.

The main frame 20 is provided with a pouch frame portion, and the pouch frame portion is provided with a plate-shaped pouch mounting panel. The pouch mounting panel is arranged in a horizontal direction. A pouch for a secondary battery, which is a sealing object, is placed on the pouch mounting panel, and a portion of a certain width from the inlet side of the pouch is the upper sealing bar 34 of the upper sealing assembly 30 and the lower sealing bar 44 of the lower sealing assembly 40. ) are placed between In a state in which the pouch is mounted on the pouch mounting panel, a predetermined width portion of the inlet side of the pouch is disposed between the upper sealing surface 34SF of the upper sealing bar 34 and the lower sealing surface 44SF of the lower sealing bar 44 .

At least the upper sealing assembly 30 of the upper sealing assembly 30 and the lower sealing assembly 40 descends so that the lower surface of the predetermined width portion of the inlet of the pouch is closed by the lower sealing bar 44 of the lower sealing assembly 40. In a state where the sealing bar 24 of the upper sealing assembly 30 is in contact with the upper surface of the predetermined width portion of the inlet of the pouch, the heat of the sealing bar 24 heats the predetermined width of the inlet side of the pouch. do. At this time, the top frame 37 is provided on the main frame 20 , and the cylinder rod of the cylinder 38 provided on the top frame 37 is connected to the upper heating block 32 of the upper sealing assembly 30 . When the upper heating block 32 and the upper sealing bar 34 descend toward the lower sealing bar 44 by the operation of the cylinder 38 to form the sealing part 2SP on the sealing object (pouch), a constant Under pressure, both sides of the sealing object (that is, the upper surface and the lower surface of the predetermined width portion adjacent to the inlet of the pouch) are subjected to a constant pressure on the upper sealing surface 34SF of the upper sealing bar 34 and the lower sealing surface of the lower sealing bar 44 . (44SF) is configured to be pressurized.

The stopper 50 is provided on the main frame 20 to support the upper sealing assembly 30 . The stopper 50 supports and supports the upper sealing assembly 30 so that the distance between the upper sealing surface 34SF of the lower surface of the upper sealing bar 34 and the lower sealing surface 44SF of the upper surface of the lower sealing bar 44 is set. function to

The upper sealing assembly 30 is connected to the bearing housing 31 provided on the upper surface of the upper heating block 32 and the bearing housing 31 by a hinge, and can be raised and lowered by a guide means to the main frame 20 . It further includes an upper support frame 33 connected to each other, wherein the stopper 50 is disposed at a position to support the bottom surface of the upper support frame 33 from below.

The stopper 50 includes a dial 52 , a stopper body 54 , a stopper bolt 56 and a nut 58 .

The stopper body 54 has a through hole communicating with the upper and lower surfaces. A bracket is provided on one side of the stopper body 54 , and the bracket is fixed to the upright frame portion of the main frame 20 by bolts. The through-holes of the stopper body 54 are disposed in a vertical direction.

A nut 58 is coupled to the stopper body 54 . A boss provided on the bottom surface of the nut 58 is inserted into the through hole above the stopper body 54 , so that the nut 58 is fixed to the stopper body 54 .

A stopper bolt 56 is coupled to the nut 58 . Since the stopper bolt 56 is coupled to the nut 58 , the stopper bolt 56 can be raised or lowered by turning the stopper bolt 56 with respect to the nut 58 . The upper end of the stopper bolt 56 is disposed at a position facing the lower surface of the upper support frame 33 (the lower surface of the upper sealing unit).

The dial 52 is coupled to the outer peripheral surface of the stopper bolt 56 above the nut 58 . The dial 52 is coaxially coupled to the stopper bolt 56 . The center of the dial 52 and the center of the stopper bolt 56 are arranged on the same line in the vertical direction, so that the dial 52 is coupled to the outer circumferential surface of the stopper bolt 56 and at the same time the dial 52 is connected to the stopper bolt 56. ) is a coaxially coupled structure.

When the dial 52 is turned, the stopper bolt 56 can be raised or lowered. A key groove is provided on the outer circumferential surface of the stopper bolt 56 , and the key 53 accommodated in the dial 52 is hooked to the key groove, and the key 53 is located on the outer circumferential surface of the dial 52 . By being supported by the bolt penetrating into the inner circumferential surface, the stopper bolt 56 rotates as the dial 52 is turned so that it can rise or fall with respect to the nut 58 as a reference. The key groove extends a certain length in the vertical direction from the outer peripheral surface of the stopper bolt 56, and the key 53 is slidably coupled to the key groove and coupled to the dial 52 at the same time, so that when the dial 52 is turned Since the key 53 is slid in the vertical direction in the key groove of the stopper bolt 56 and at the same time the stopper bolt 56 is rotated in the nut 58 and lifted up and down in the vertical direction, the stopper bolt as the dial 52 is turned (56) is configured to be able to rise or fall while rotating in a screw thread with respect to the nut (58) like the dial (52).

At this time, the pitch of the stopper bolt 56 is 0.1 mm, and one division of the dial 52 (one division on the outer circumferential surface of the dial 52 is 0.01 mm. Turn the dial 52 clockwise When you turn the scale by 1, the stopper bolt 56 goes down by 0.01 mm, and when you turn the dial 52 by one scale in the counterclockwise direction, the stopper bolt 56 goes up by 0.01 mm. , It is natural that the pitch of the stopper bolt 56 and the size of one division of the dial 52 may be different.

On the other hand, the stoppers 50 are arranged in at least one pair under the upper support frame (33). In the present invention, a pair of stoppers 50 are respectively disposed at left and right positions under the upper support frame 33 . Since the upper support frame 33 is a configuration of the upper sealing assembly 30 , a pair of left and right stoppers 50 support and support the upper sealing assembly 30 .

According to the sealing unit with improved sealing flatness of the present invention, the upper sealing surface (34SF) of the upper sealing bar (34) and the lower sealing surface (44SF) of the lower sealing bar (44) are the inlet of the pouch, which is a sealing object, and In a state in which the upper and lower surfaces of adjacent portions of a certain width are in contact with the inlet of the pouch by heat transferred from the upper heating block 32 and the lower heating block 42 to the upper sealing bar 34 and the lower sealing bar 44 A sealing portion 2SP may be formed by hot sealing adjacent portions of a predetermined width to seal the inlet of the pouch with a predetermined width.

Meanwhile, in the present invention, a heating step of heating the upper sealing bar 34 and the lower sealing bar 44, an adjustment bolt release step, a stopper 50 separation step, a feeler gauge 6 arrangement step, an upper flatness adjustment bolt ( 36) Sealing flatness including a fastening step, a lower flatness adjusting bolt 46 fastening step, a stopper 50 fastening step, a pouch sealing step, a sealing portion checking step, a sealing portion target thickness setting step, and a sealing portion thickness adjustment step A setting method is provided.

A method of adjusting the thickness of the sealing part of the pouch using the sealing unit of the present invention is as follows.

The upper sealing bar 34 and the lower sealing bar 44 supported by the main frame 20, which are the main parts of the sealing unit of the present invention, are heated. The upper sealing bar 34 is coupled to the upper heating block 32, and the lower sealing bar 44 is coupled to the lower heating block 42, so that the upper heating block 32 is heated to the upper sealing bar 34. is heated by heat conduction, while heating the lower heating block 42 to heat the lower sealing bar 44 by heat conduction. The step of heating the sealing bar is a heating step. The heater of the upper heating block 32 and the lower heating block 42 is in an on state, and the temperature of the upper sealing bar 34 and the lower sealing bar 44 is stabilized at 180° C. to work. Of course, it is natural that the temperatures of the upper sealing bar 34 and the lower sealing bar 44 may be different.

On the other hand, a pair of left and right tilting adjustment bolts 35 coupled to the bearing housing 31 of the upper sealing assembly 30 before the heating step (the upper surface of the bearing housing 31 and the upper support frame 33) (placed between the bottoms of the Since the tilting adjustment bolt 35 will not be used, the tilting adjustment bolt 35 may be removed.

An upper sealing assembly 30 and a lower sealing assembly 40 are disposed on the main frame 20 to face each other from above and below, and the upper sealing bar 34 of the upper sealing assembly 30 and the lower sealing assembly 40 are Loosen the upper flatness adjustment bolt 36 and the lower flatness adjustment bolt 46 from the upper heating block 32 and the lower heating block 42 on which the lower sealing bar 44 is mounted. This step is the adjustment bolt release step. At this time, the adjusting bolt release step is to loosen the fixing bolt FB for fixing the upper sealing bar 34 to the upper heating block 32 , and to fix the lower sealing bar 44 to the lower heating block 42 . In the state in which the bolt FB is loosened, loosen the upper flatness adjusting bolt 36 and the lower flatness adjusting bolt 46 .

The upper end of the stopper bolt 56 of the stopper 50 provided in the main frame 20 is lowered so as to be spaced apart from the upper support frame 33 coupled to the upper heating block 32 by a predetermined distance. Turn the dial 52 in one direction to lower the stopper bolt 56 downward. When the stopper bolt 56 is lowered by turning the dial 52, the upper end of the stopper bolt 56 is at the bottom of the upper support frame 33 on which the upper heating block 32 and the upper sealing bar 34 are supported. They are separated by a certain distance. Since one division on the outer peripheral surface of the dial 52 is 0.01 mm, turning the dial 52 clockwise by one division can make the stopper bolt 56 go down by 0.01 mm, the dial ( 52) is rotated clockwise by the required pitch so that the upper end of the stopper bolt 56 is spaced apart from the bottom surface of the upper support frame 33 by a required distance.

The feeler gauge 6 is engaged between the upper sealing surface 34SF of the upper sealing bar 34 and the lower sealing surface 44SF of the lower sealing bar 44 . Before the feeler gauge 6 is engaged between the upper sealing surface 34SF and the lower sealing surface 44SF, the upper sealing bar 34 and the lower sealing bar 44 are spaced apart by a certain distance, so that the upper sealing surface In a state where the feeler gauge 6 is inserted between the 34SF and the lower sealing surface 44SF, the cylinder rod of the cylinder 38 connected to the upper heating block 32 is lowered so that the feeler gauge 6 is moved to the upper part by a certain pressure. The sealing bar 34 is engaged between the upper sealing surface 34SF and the lower sealing surface 44SF of the lower sealing bar 44 . In a state in which a space for the feeler gauge 6 is secured between the upper sealing bar 34 and the lower sealing assembly 40, the feeler gauge 6 is put into this space, and then the cylinder is operated. The upper sealing assembly 30 is lowered toward the lower sealing assembly 40 so that the feeler gauge 6 is applied with a constant pressure to the upper sealing surface 34SF of the upper sealing bar 34 and the lower sealing surface 44SF of the lower sealing bar 44 . ) between them. In a state where the lower sealing assembly 40 is fixed, the upper sealing assembly 30 is lowered by the operation of the cylinder so that the feeler gauge 6 is applied to the upper sealing surface 34SF of the upper sealing bar 34 by a constant pressure. and the lower sealing surface 44SF of the lower sealing bar 44 may be engaged. At this time, the cylinder pressure is adjusted so that the load is less than about 10 kg when the feeler gauge 6 is interposed between the upper sealing bar 34 and the lower sealing bar 44 . This step is the feeler gauge 6 placement step. It can be said that the thickness (eg, 0.3 mm) between the upper and lower surfaces of the feeler gauge 6 is determined by the thickness of the sealing part 2SP of the pouch. On the other hand, the upper sealing assembly 30 is lowered by the cylinder to apply the feeler gauge 6 between the upper sealing bar 34 and the lower sealing bar 44 with a certain pressure (for example, the pressure less than 10 kg). Even so, the stopper bolt 56 of the stopper 50 is lowered by a sufficient distance so that the upper end of the stopper 50 is still spaced apart from the bottom surface of the upper support frame 33 .

Tighten the upper flatness adjusting bolt 36 coupled to the upper heating block 32 so that the lower end of the upper flatness adjusting bolt 36 is in contact with the upper surface of the upper sealing bar 34 . At this time, tighten the upper flatness adjusting bolt, but tighten only enough that the lower end of the upper flatness adjusting bolt touches the upper surface of the upper sealing bar (34). The load is not strongly transmitted to the upper sealing bar 34 due to the fastening of the upper flatness adjustment bolt. This step is an upper flatness adjustment bolt tightening step.

Tighten the lower flatness adjusting bolt 46 coupled to the lower heating block 42 so that the upper end of the lower flatness adjusting bolt 46 is in contact with the lower surface of the lower sealing bar 44 . At this time, the lower flatness adjusting bolt is also tightened, but only so that the upper end of the lower flatness adjusting bolt touches the lower surface of the lower sealing bar (44). Due to the fastening of the lower flatness adjustment bolt, the load is not transmitted strongly to the lower sealing bar 44 . This step is a lower flatness adjustment bolt tightening step.

On the other hand, in the adjusting bolt release step, the fixing bolt FB for fixing the upper sealing bar 34 to the upper heating block 32 is loosened, and the fixing for fixing the lower sealing bar 44 to the lower heating block 42 is released. The bolt (FB) is loosened, and the fixing bolts (FB) that have been loosened in this way are strongly fastened. The upper sealing bar 34 fixing bolt (FB) and the lower sealing bar 44 fixing bolt (FB) are strongly fastened. That is, the fixing bolt FB connecting the upper sealing bar 34 and the upper heating block 32 and the fixing bolt FB connecting the lower sealing bar 44 and the lower heating block 42 are strongly fastened. . Strongly fastening the fixing bolts FB means that the upper sealing bar 34 and the lower sealing bar 44 do not flow in the upper heating block 32 and the lower heating block 42, respectively. It means to firmly fasten the lower fixing bolt (FB). This step is a fixing bolt (FB) fastening step.

The upper end of the stopper bolt 56 of the stopper 50 provided in the main frame 20 is raised to contact the bottom surface of the upper support frame 33 coupled to the upper heating block 32 . Fasten the stopper 50 only enough to contact the upper support frame 33 (Upper Sealing Unit). The upper end of the stopper bolt 56 of the stopper 50 is fastened only enough to touch the bottom surface of the upper support frame 33 , and the load is not transmitted to the upper support frame 33 due to the fastening of the stopper 50 . This is to prevent the load from being transmitted to the upper sealing assembly 30 due to the fastening of the stopper 50 . This step is the stopper 50 fastening step.

A sealing portion (2SP) hot-sealed to the pouch in a state where a portion of a certain width adjacent to the inlet of the pouch is disposed between the upper sealing surface 34SF and the lower sealing surface 44SF with the feeler gauge 6 removed. to form In a state in which the upper sealing bar 34 and the lower sealing bar 44 are heated to a predetermined temperature, a portion of a predetermined width adjacent to the inlet of the pouch is placed between the upper sealing surface 34SF and the lower sealing surface 44SF. , a portion of a predetermined width adjacent to the input of the pouch is hot-sealed to form a sealing portion 2SP. This step is a pouch sealing step.

After the sealing part 2SP is formed in the pouch, the thickness of the sealing part 2SP of the pouch is measured. This is the sealing part confirmation step.

After checking the thickness of the sealing part 2SP of the pouch, the stopper bolt 56 of the stopper 50 is adjusted to set the thickness of the sealing part 2SP of the pouch to a desired thickness. In the stopper 50, the stopper bolt 56 is turned by the dial 52 to raise or lower it to set the thickness of the sealing part 2SP of the pouch to a desired thickness. Adjust the sealing positions ① and ⑤ of the sealing portion 2SP of the pouch shown in the drawing to the desired thickness with both stoppers 50 . This step is a sealing part target thickness setting step.

The thickness of the sealing part 2SP of the pouch is adjusted by operating the upper flatness adjusting bolt 36 and the lower flatness adjusting bolt 46 . Use the upper flatness adjusting bolt and the lower flatness adjusting bolt to adjust the thickness of ② to ④, which are the sealing positions of the sealing part (2SP) of the pouch. By using the upper flatness adjusting bolt and the lower flatness adjusting bolt, the thickness of the sealing positions ② to ④ of the sealing part 2SP of the pouch is adjusted to match the target thickness of the sealing part. This step is a sealing part thickness adjustment step.

In the present invention, as described above, the distance between the upper sealing surface 34SF of the upper sealing bar 34 and the lower sealing surface 44SF of the lower sealing bar 44 is set as much as the thickness of the sealing portion 2SP of the pouch. The sealing portion 2SP is formed in the pouch with a target thickness by the upper sealing bar 34 and the lower sealing bar 44 .

At this time, the upper and lower surfaces of the portion of a predetermined width adjacent to the inlet of the pouch are pressed by the upper sealing bar 34 and the lower sealing bar 44 to form the sealing part 2SP. In the present invention, the stopper 50 is attached to the upper sealing bar ( 34) and the lower sealing bar 44 are mounted on the main frame 20 (mounted on the body structure), and the upper support frame 33 (the upper sealing bar 34) is mounted in the upper sealing assembly 30. A pair of stoppers 50 support at least the left and right sides of the lower portion of the bracket), so that the force pressing the upper and lower surfaces of the pouch by the upper sealing bar 34 and the lower sealing bar 44 is increased. Even if it acts, the upper sealing bar 34 and the lower sealing bar 44 do not receive a force, so that the upper sealing surface 34SF and the lower sealing surface 44SF are not deformed (convexly deformed) and a uniform gap can be maintained. have.

As such, the upper sealing surface 34SF of the upper sealing bar 34 and the lower sealing surface 44SF of the lower sealing bar 44 are not deformed and a uniform gap is maintained, so that the thickness of the sealing surface of the pouch is maintained uniformly. Therefore, the defect of the pouch due to the non-uniform thickness of the sealing surface of the pouch can be prevented.

In other words, according to the present invention, the center of the upper sealing bar 34 and the lower sealing bar 44 by mounting at least a pair of stoppers 50 to the body structure rather than the upper sealing bar 34 and the lower sealing bar 44 . Since it is avoided that the stopper supports the force transmitted from the , a case where the central portion of the upper sealing bar 34 and the lower sealing bar 44 is greatly deformed does not cause a relatively narrow gap. There is no case where the difference in the amount of deformation is more than 20 μm.

Therefore, in the present invention, in a state in which the sealing surface is formed in the pouch by the upper sealing surface 34SF of the upper sealing bar 34 and the lower sealing surface 44SF of the lower sealing bar 44, the middle portion of the sealing surface of the pouch The thickness of the sealing part (2SP) of the pouch is uneven because it prevents the case where the thickness of the sealing part (2SP) becomes non-uniform, such that the thickness of the silver is relatively thin and the thickness of both ends is relatively thicker. case can be prevented.

The present invention installs the stopper 50 on the main frame 20 to support the upper support frame 33 constituting the upper sealing assembly 30 (it can be said that the stopper 50 is installed on the moving block) It is a structure in which the backlash of the finely adjustable adjustment bolt (backlash of the upper and lower adjustment bolts) is eliminated, and the sealing thickness of the sealing part (2SP) can be adjusted.

The flatness test of the pouch sealing part (2SP) was performed using the fine adjustment stopper 50, which is the main part of the present invention (application of the flatness setting method using the fine adjustment stopper), as shown in FIG. 17, the sealing part of the pouch ( In 2SP), parts ① to ⑤ are the thickness measurement positions.

Table 1 shows the measured thickness of parts ① to ⑤ in the sealing part 2SP, and Table 2 shows the average thickness and the maximum minimum deviation and test case average of parts ① to ⑤ of the sealing part 2SP. As a result of performing the test 60 times, the average value as shown in Tables 1 and 2 was generated for each location, and the average of the maximum and minimum deviation was 4 μm. The minimum value of 300 measurement data was 0.271mm and the maximum value was 0.279mm, and this deviation was 8um. Accordingly, when forming the pouch sealing portion 2SP according to the present invention, it can be said that the flatness of the sealing portion 2SP is well maintained.

On the other hand, Table 3 shows that the heating block is heated after the test is completed (to be precise, the upper heating block 32 and the upper sealing bar 34 and the lower heating block 42 and the lower sealing bar 44 are heated). This is the result measured after waiting for 3 hours. As shown in Table 3, after the completion of the test, after waiting for 3 hours with the heating block heated, the test was performed again. As a result, there was no significant difference from the previous test. Even in this case, the thickness flatness of the pouch sealing part (2SP) was well can be seen to be maintained.

After all, in the present invention, unlike the conventional one, by the stopper 50 supporting the upper support frame 33 instead of the upper sealing bar 34 in the upper sealing assembly 30, the upper sealing surface 34SF of the upper sealing bar 34 is There is no difficulty in setting work to maintain the flatness of the lower sealing surface 44SF of the lower sealing bar 44 and the sealing thickness of the sealing surface of the pouch, and there is no difficulty, and it takes a long time solve it By maintaining the flatness of the upper sealing surface 34SF of the upper sealing bar 34 and the lower sealing surface 44SF of the lower sealing bar 44 by turning the stopper bolt 56 in the stopper 50 to raise and lower the pouch Since the setting operation is performed to maintain the flatness of the sealing thickness of the sealing surface, there is no difficulty in maintaining the flatness, and the problem that takes a long time can also be solved.

In the present invention, the fine adjustment stopper 50 is developed, and the fine adjustment stopper 50 can be set faster than the conventional method with a setting time of about 1 hour.

As a result of the flatness test using the fine adjustment stopper in the present invention, it was confirmed that the flatness was well maintained within 10 μm.

In addition, it was confirmed that the flatness was well maintained even when measured after waiting for 3 hours in a heated state.

In the above, specific embodiments of the present invention have been described above. However, the spirit and scope of the present invention is not limited to these specific embodiments, and various modifications and variations are possible within the scope that does not change the gist of the present invention. Anyone who has it will understand.

Therefore, since the embodiments described above are provided to fully inform those of ordinary skill in the art to which the present invention belongs the scope of the invention, it should be understood that they are exemplary in all respects and not limiting, The invention is only defined by the scope of the claims.

2SP. Sealing part 6. Feeler gauge
20. Main frame 30. Upper sealing assembly
31. Bearing housing 32. Upper heating block
33. Upper support frame 34. Upper sealing bar
34SF. Upper sealing surface 35. Tilt adjustment bolt
36. Upper flatness adjustment bolt 37. Top frame
38. Cylinder 40. Lower sealing part
42. Lower heating block 43. Lower support frame
44. Lower sealing bar 44SF. lower sealing surface
46. Lower flatness adjustment bolt 50. Stopper
52. Dial 53. Key
54. Stopper body 56. Stopper bolt
58. Nuts

Claims (11)

main frame 20;
an upper sealing assembly 30 in which an upper sealing bar 34 is coupled to the upper heating block 32;
a lower sealing assembly 40 in which a lower sealing bar 44 is coupled to a lower heating block 42 and the lower sealing bar 44 is disposed at a position facing the upper sealing bar 34 from below;
an upper flatness adjustment bolt 36 coupled to the upper heating block 32 and disposed at a position facing the upper surface of the upper sealing bar 34;
and a stopper 50 provided on the main frame 20 to support the upper sealing assembly 30;
The upper sealing assembly 30 is connected to the bearing housing 31 provided on the upper surface of the upper heating block 32 by a hinge, and is connected to the main frame 20 by a guide means. A sealing unit with improved sealing flatness, characterized in that it further includes an upper support frame 33 connected to be elevating, wherein the stopper 50 is configured to be disposed at a position supporting the bottom surface of the upper support frame 33 .
According to claim 1,
A lower flatness adjustment bolt 46 coupled to the lower heating block 42 and disposed at a position facing the bottom surface of the lower sealing bar 44; sealing unit.
According to claim 1,
The stopper 50 is configured such that the distance between the upper sealing surface 34SF of the lower surface of the upper sealing bar 34 and the lower sealing surface 44SF of the upper surface of the lower sealing bar 44 is set in the upper sealing assembly 30. A sealing unit with improved sealing flatness, characterized in that it supports and supports.
delete According to claim 1,
The stopper 50 includes a stopper body 54 provided with a dial 52 and a stopper that is lifted from below the upper support frame 33 with respect to the stopper body 54 by the operation of the dial 52 . A sealing unit with improved sealing flatness, characterized in that it comprises a bolt (56).
6. The method of claim 5,
The stopper (50) is a sealing unit with improved sealing flatness, characterized in that arranged in at least one pair under the upper support frame (33).
According to claim 1,
A sealing bar seating groove is provided on the front surface of the upper heating block 32, and the upper sealing bar 34 is accommodated in the sealing bar seating groove, and the upper sealing bar 34 is secured by a fixing bolt FB. A sealing unit with improved sealing flatness, characterized in that it is fixed to the sealing bar seating groove.
3. The method of claim 2,
The lower heating block 42 is provided with a sealing bar seating groove on the front side, the lower sealing bar 44 is accommodated in the sealing bar seating groove, and the lower sealing bar 44 is secured by a fixing bolt FB. A sealing unit with improved sealing flatness, characterized in that it is fixed to the sealing bar seating groove.
a heating step of heating the upper sealing bar 34 and the lower sealing bar 44 supported by the main frame 20 of the sealing unit;
In the upper heating block 32 and the lower heating block 42 on which the upper sealing bar 34 and the lower sealing bar 44 are mounted, the upper flatness adjustment bolt 36 and the lower flatness adjustment bolt 46 are removed. adjusting bolt release step to loosen;
A stopper 50 for descending so that the upper end of the stopper bolt 56 of the stopper 50 provided in the main frame 20 is spaced a predetermined distance downward from the upper support frame 33 coupled to the upper heating block 32 . ) separation step;
disposing a feeler gauge 6 such that the feeler gauge 6 is interposed between the upper sealing surface 34SF and the lower sealing surface 44SF of the upper sealing bar 34 and the lower sealing bar 44;
Adjust the upper flatness so that the lower end of the upper flatness adjusting bolt 36 is in contact with the upper surface of the upper sealing bar 34 by tightening the upper flatness adjusting bolt 36 coupled to the upper heating block 32 . bolt 36 fastening step;
Lower flatness adjustment so that the upper end of the lower flatness adjusting bolt 46 is in contact with the upper surface of the lower sealing bar 44 by tightening the lower flatness adjusting bolt 46 coupled to the lower heating block 42 . bolt 46 fastening step;
A stopper 50 that raises the upper end of the stopper bolt 56 of the stopper 50 provided in the main frame 20 so as to contact the lower surface of the upper support frame 33 coupled to the upper heating block 32 . ) fastening step;
A sealing portion hot-sealed to the pouch in a state where a portion of a certain width adjacent to the inlet of the pouch is disposed between the upper sealing surface 34SF and the lower sealing surface 44SF with the feeler gauge 6 removed ( 2SP) forming a pouch sealing step;
a sealing part checking step of measuring the thickness of the sealing part (2SP) of the pouch;
a sealing part target thickness setting step of adjusting the stopper bolt (56) of the stopper (50) to set the thickness of the sealing part (2SP) of the pouch to a desired thickness;
Sealing flatness adjusting step of adjusting the thickness of the sealing portion (2SP) of the pouch by operating the upper flatness adjusting bolt 36 and the lower flatness adjusting bolt 46; How to set.
10. The method of claim 9,
In the adjusting bolt release step, the fixing bolt FB for fixing the upper sealing bar 34 to the upper heating block 32 is loosened, and the lower sealing bar 44 is fixed to the lower heating block 42 . A sealing flatness setting method, characterized in that it is configured to loosen the upper flatness adjusting bolt (36) and the lower flatness adjusting bolt (46) in a state in which the fixing bolt (FB) is loosened.
10. The method of claim 9,
In the step of fastening the upper flatness adjusting bolt 36, the fixing bolt FB is tightened so that the upper sealing bar 34 is fixed to the upper heating block 32, and the lower flatness adjusting bolt 46 fastening step In the sealing flatness setting method, characterized in that it is configured to tighten the fixing bolt (FB) so that the lower sealing bar (44) is fixed to the lower heating block (42).

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