KR102315930B1 - Friction welding assembly for auto strapping packaging tool - Google Patents

Abstract

Provided is a friction welding assembly for an automatic strapping packaging tool, which comprises: a pressing unit pressing a plastic band for packaging disposed between an upper gripper unit and a lower gripper unit when a press unit is descended through a first motor; a friction providing unit disposed on one side surface of the pressing unit and generating friction heat in the plastic band by transmitting power where the upper gripper unit linearly reciprocates through a second motor disposed in an upper end; and a connection unit disposed between the pressing unit and the friction providing unit and switching the power caused by axial rotation of the second motor into a linear reciprocating motion of the upper griper unit.

Description

Friction Welding Assemblies for AUTO STRAPPING PACKAGING TOOL

The present invention relates to a welding assembly, and more particularly, to a friction welding assembly for an automatic strapping packaging tool, which is a part of an automatic packaging tool used when packaging a box or the like.

The automatic packaging tool is used for packaging an article such as a box through a plastic band in the form of a portable tool. Packaging involves first wrapping the item with a plastic band to make a loop, and then pulling the plastic band through an automatic packing tool until a certain tension is generated. Then, a loop with constant tension is created on an article or the like through a subsequent process of bonding the plastic bands of the overlapping parts.

Here, the bonding usually applies frictional heat generated by vibration while the plastic band is pressed. For this reason, bonding between homogeneous materials occurs in the plastic band that is locally molten. And, when natural cooling is made, a loop is formed by the plastic band through the joint portion.

Techniques for welding employed in automatic packaging tools are already known. However, the conventional assembly for welding uses a means for providing tension in the automatic packaging tool and a power source such as a motor in common. As a result, a drive system for providing tension and generating welding using a single motor becomes complicated, and there is a problem in that the control of the motor must be interlocked with each other.

Korean Patent Registration No. 10-1675003 (Registered on November 4, 2016) Strapping device with gear system device Korean Patent Registration No. 10-1613247 (Registered on April 11, 2016) Strapping device with tensioner Korean Patent Publication No. 10-2019-0034662 (published on 04.02.2019) Strapping device

An embodiment of the present invention has been devised to solve the above problems, and an object of the present invention is to provide a friction welding assembly for an automatic strapping packaging tool that operates independently using different dedicated motors. In addition, an object of the present invention is to provide a friction welding assembly for an automatic strapping packaging tool capable of renewing the design of the housing shape of the automatic packaging tool and the use of space inside the housing.

An object of the present invention is to provide a welding assembly having a new type of configuration and structure. It is intended to simplify the control of the friction providing unit and the pressure unit, and to control each independently.

In addition, it is intended to secure the reliability of the operation of the friction providing unit and the pressure unit. In addition, this can reduce product costs and improve business profits. In addition, by facilitating a coupling relationship between each component of the present welding assembly, maintenance and management may be convenient.

In order to solve the above problems, an embodiment of the present invention includes: a pressing unit for pressing a plastic band for packaging disposed between an upper gripper part and a lower gripper part when the press part moves downward through the first motor; It is disposed on any one side of the pressing unit, and when the press unit moves downward through the first motor, the upper gripper unit generates frictional heat in the plastic band through a second motor disposed at the upper end to generate power to reciprocate linearly. a friction providing unit; and a connection unit disposed between the pressing unit and the friction providing unit, the connection unit converting the power generated by the shaft rotation of the second motor into linear reciprocating movement of the upper gripper part; to provide.

The friction providing unit may include a second shaft coupled to the second motor to rotate the shaft; and an eccentric cylindrical element eccentrically formed on the outer circumferential surface of the second shaft.

The friction providing unit may include: a first cylindrical bearing part through which the eccentric cylindrical element is penetrated and coupled to a line contact by a plurality of first rollers exposed on an inner circumferential surface; and a ball bearing portion that penetrates through and is coupled to the second shaft and is disposed on the upper and lower sides of the first cylindrical bearing portion, respectively.

The connecting unit includes a first coupling part having a first through-hole, the outer peripheral surface of the first cylindrical bearing part being surface-contact coupled to the first through-hole; an extension portion extending from the outer circumferential surface of the first coupling portion to the other side; and a second coupling part coupled to the extension part and having a second through-hole formed thereon.

The connection unit includes an arm body; and a connecting rod extending upwardly of the arm body and coupled to the second through hole.

Preferably, the connection unit further includes a second connection part having one end rotatably coupled to the arm body and the other end coupled to the upper gripper part.

The second connection part includes a pair of twin link plates, the other end extending from one end is bifurcated and opposed to each other, and on the lower surface of the second connection part there is a stopper protrusion limiting the linear reciprocating movement of the second connection part. It is preferable to form

It is preferable that the upper gripper part has a link receiving groove in which the twin link plates are accommodated, respectively, and the twin link plate pivots with respect to the upper gripper part according to the raising/lowering operation of the upper gripper part.

The pressing unit is disposed below the first motor, and includes a pressing gear element that is lowered by forward axis rotation of the first motor, and the first motor, the pressing gear element, the press unit, and the upper gripper. It is preferable that the portions are sequentially arranged vertically downward.

According to the problem solving means of the present invention as described above, various effects including the following items can be expected. However, the present invention is not established only when exhibiting all of the following effects.

The friction welding assembly for an automatic strapping packaging tool according to an embodiment of the present invention can be operated independently by using different dedicated motors. In addition, since each of the plurality of components constituting the friction providing unit is arranged in the vertical direction, the design of the housing shape of the automatic packaging tool and the use of the space inside the housing can be renewed unlike the existing ones.

A new type of welding assembly can be provided by newly designing the configuration and structure of the pressing unit and the friction providing unit.

By using a dedicated motor used only for the friction providing unit, the control of the friction providing unit can be simplified. In addition, it is possible to control the pressure unit independently from the friction control unit by using a separate dedicated motor constituting the pressure unit. In addition, since each of the plurality of components constituting the pressing unit is also arranged in the vertical direction, the shape of the housing of the automatic packaging tool can be renewed.

Through this, it is possible to secure the reliability of the operation of the friction providing unit. In addition, this can reduce product costs and improve business profits. In addition, by facilitating a coupling relationship between each component of the present welding assembly, maintenance and management may be convenient.

1 is a perspective view of a friction welding assembly for an automatic strapping packaging tool in accordance with one embodiment;
Figure 2 is a perspective perspective view seen from another direction of Figure 1;
Fig. 3 is a longitudinal cross-sectional view in the 3-3' direction of Fig. 1;
Figure 4 is a state diagram in which Figure 1 is disposed in the inner case of the automatic packaging tool.
Figure 5 is an exploded perspective view of the pressurization unit of Figure 1;
Figure 6 is a bottom exploded perspective view of Figure 5;
7 is an exploded perspective view of the friction providing unit and the connecting unit of FIG. 1 .
Fig. 8 is a cross-sectional view in the direction 8-8' of Fig. 1;
9 is a perspective view of an upper gripper part and a second connection part of FIG. 1;
Fig. 10 shows the motion of the welding assembly of Fig. 1 in operation for welding;

Hereinafter, in the description of the present invention, when it is determined that the subject matter of the present invention may be unnecessarily obscured as it is obvious to those skilled in the art with respect to related known functions, the detailed description thereof will be omitted. The terminology used in the present application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

1 is a perspective view of a friction welding assembly for an automatic strapping packaging tool according to an embodiment, FIG. 2 is a perspective view viewed from another direction of FIG. 1 , FIG. 3 is a longitudinal cross-sectional view in the 3-3′ direction of FIG. 4 is a state diagram in which FIG. 1 is disposed in the inner case of the automatic packaging tool.

In addition, FIG. 5 is an exploded perspective view of the pressurizing unit of FIG. 1 , and FIG. 6 is an exploded perspective view of the bottom surface of FIG. 5 . 1 to 6 , the friction welding assembly for an automatic strapping packaging tool according to an embodiment of the present invention may include a pressing unit 100 , a friction providing unit 200 , a connection unit 300 , etc. . This welding assembly is accommodated within the housing of the automatic packaging tool to bond the packaging plastic band. The housing may be formed by assembling at least one or more plates. The welding assembly according to an embodiment may be disposed in an upright (vertical direction) state within the housing. After the plastic band is pressed in a state of being overlapped in two layers, it can be locally melted and joined by frictional heat caused by vibration. The plastic band is made of PP or PET material.

When the press unit 140 descends through the first motor 110 disposed at the upper end of the pressing unit 100 , the upper gripper unit 150 is pressed by the press unit 140 and the upper gripper unit 150 is pressed. ) and the lower gripper part 160 serves to press the plastic band for packaging disposed in two layers. Here, the first motor 110 is preferably an electric motor operated by electric power supplied from the outside (power source such as a battery). The first motor 110 is a first shaft 111 for shaft rotation, and the first shaft 111 in the radial direction of the first shaft 111 is penetrated and fitted to the shaft rotation of the first shaft 111. It may further include a power transmission pin 112 that rotates accordingly. The first shaft 111 performs a forward shaft rotation and a reverse shaft rotation.

The pressing unit 100 is disposed on the lower side of the first motor 110 and is inserted through the pressing gear element 120 and one end of the pressing gear element 120 that are lowered by the forward axis rotation of the first motor 110 . It may further include a vertical shaft 130 coupled to the other end of which is coupled to the upper gripper unit 150 . The pressurizing gear element 120 according to an embodiment may have a cylindrical shape with upper and lower openings and an empty inside. A fitting groove 121 disposed symmetrically in the center of the upper surface of the pressurizing gear element 120 may be formed in the upper portion of the pressurizing gear element 120 . When the first motor 110 and the pressure gear element 120 are coupled, both ends of the power transmission pin 112 are accommodated in the fitting grooves 121 , respectively.

On the other hand, a screw thread 122 may be formed on the lower outer circumferential surface of the pressurizing gear element 120 . Here, the lower outer diameter is preferably larger than the upper outer diameter. The vertical shaft 130 is disposed in a vertical direction with respect to the base plate of the housing. A rectangular through-hole is formed at the lower end of the vertical shaft 130 in the radial direction of the vertical shaft 130 . Although the upper gripper part 150 is coupled to the vertical shaft 130 , a linear reciprocating motion according to the friction providing unit 200 may be allowed by the rectangular through-hole.

In addition, the shaft spring 180 may be coupled to the outer circumferential surface of the vertical shaft 130 . The shaft spring 180 is compressed when the pressure gear element 120 descends. On the other hand, when the first motor 110 rotates the axis in the reverse direction, the pressurizing gear element 120 moves upward by the elastic restoring force of the shaft spring 180 . In addition, when the first motor 110 rotates the axis in the reverse direction, the pressing gear element 120 moves upward through a relative motion with respect to the set screw element 170 to be engaged.

The press unit 140 is disposed between the pressurizing gear element 120 and the upper gripper unit 150 . In addition, the first motor 110 , the pressure gear element 120 , the press unit 140 , and the upper gripper unit 150 are sequentially arranged vertically downward. That is, the plurality of components constituting the pressing unit 100 are preferably arranged in a vertical direction within the housing of the automatic packaging tool. This is in consideration of the structural shape and internal space of the housing according to an embodiment. In addition, it is preferable that a gap within a certain range is formed between the lower surface of the press unit 140 and the upper surface of the upper gripper unit 150 .

The upper gripper unit 150 may include a gripper body 151 , a shaft groove 152 , a rectangular groove 153 , a link receiving groove 154 , and the like. When the power generated by the second motor 210 is transmitted through the connection unit 300 , the upper gripper unit 150 performs a linear reciprocating motion. At this time, the upper gripper part 150 vibrates in the longitudinal direction of the shaft groove 152 . The shaft groove 152 is formed near the center of the upper surface of the gripper body 151 . A plurality of rectangular grooves 153 are disposed on the upper surface of the gripper body 151 . The shaft groove 152 has a rectangular shape, and is disposed in the same direction as the rectangular groove 153 .

On the other hand, such a rectangular groove 153 is preferably formed on the lower surface of the press portion (140). An empty space is formed by the rectangular grooves 153 respectively formed in the press part 140 and the upper gripper part 150, and the ball bearing 159 can be accommodated and seated in the empty space. As a result, even if the upper gripper part 150 linearly reciprocates in a state where the pressing gear element is lowered and the upper gripper part 150 is pressed by the press part 140 , the press part 140 maintains its original position as it is. can keep

Also, pinholes penetrating through the shaft groove 152 and the link receiving groove 154 may be formed in the gripper body 151 . A fixing pin is inserted through the pinhole. At this time, both ends of the fixing pin may protrude from both sides of the gripper body 151 to be exposed. The link receiving groove 154 communicates with one side of the gripper body 151 and allows the other end of the second connection part 330 to be accommodated and coupled. Specifically, the link receiving groove 154 allows the twin link plate 331 to be described later to be accommodated and coupled to the upper gripper part 150 , respectively. Meanwhile, the fixing pin allows the vertical shaft 130 and the second connection part 330 to be coupled to the gripper body 151 .

In addition, the first knurling plate 155 may be coupled to the lower surface of the gripper body 151 , and the second knurling plate 156 may be formed on the upper surface of the lower gripper unit 160 . The first knurled plate 155 may provide frictional force by repeatedly forming horizontal or oblique grooves in a predetermined pattern. In this case, the second knurled plate 156 is disposed at a position opposite to the first knurled plate 155 . A plastic band overlapped in two layers is disposed on the lower gripper part 160, and when the upper gripper part 150 is pressed downward, the plastic band positioned between the first knurling plate 155 and the second knurling plate 156 is also becomes pressurized. Then, in a pressurized state, the upper gripper unit 150 may make a linear reciprocating motion with the power transmitted through the friction providing unit 200 to generate frictional heat in the plastic band.

In addition, a coupling protrusion may be formed on one side of the gripper body 151 . The pressing unit 100 may include a cutter part 190 coupled to the coupling protrusion and a cutter spring coupled to the upper surface of the cutter part 190 to provide elastic force to the cutter part 190 . When the pressing gear element 120 descends, the cutter spring is pressed and compressed at the same time as the press unit 140 is pressed, and at a certain moment, the cutter unit 190 descends.

In addition, the pressing unit 100 is fixedly arranged on one side of the space in which the pressing unit 100 is disposed, and is meshed with the screw thread 122 , and the pressing gear element 120 according to the axial rotation direction of the first motor 110 . ) may further include a set screw element 170 to be raised and lowered. The fixing screw element 170 according to an embodiment may be a part of the fixing cover 400 . The fixing cover 400 supports a part of the welding assembly disposed in the housing, maintains a coupling relationship to components constituting the welding assembly, and serves to fix the arrangement structure of the welding assembly. As such, the fixing cover 400 may include at least one or more fixing elements, at least one or more supporting elements, and the like.

At least a lower portion of the fixed cover 400 according to an embodiment of the pressurizing gear element 120 is accommodated, and a screw thread is formed on the inner circumferential surface to be engaged with the pressurizing gear element 120 . The fixing screw element 170 according to an embodiment may be a fixing cover 400 in which a screw thread is formed on an inner circumferential surface. The fixing screw element 170 according to an embodiment may be a part of the fixing cover 400 in which a screw thread is formed on the inner circumferential surface.

7 is an exploded perspective view of the friction providing unit and the connection unit of FIG. 1 , FIG. 8 is a cross-sectional view in the 8-8′ direction of FIG. 2 , and FIG. 9 is a partial perspective view of the upper gripper part and the second connection part of FIG. 1 . .

7 to 9 , the friction providing unit 200 is disposed on one side of the pressing unit 100 , and when the press unit 140 descends through the first motor 110 , it is disposed on the top The upper gripper unit 150 provides power to linearly reciprocate through the second motor 210 to generate frictional heat in the plastic band.

The friction providing unit 200 may include a second shaft 220 coupled to the second motor 210 to rotate the shaft and an eccentric cylindrical element 221 eccentrically formed on the outer peripheral surface of the second shaft 220 . Here, the second shaft 220 is formed vertically downward. The second axis 220 may be disposed parallel to the first axis 111 . In addition, an end of the second shaft 220 may be inserted and received in the fixed cover 400 . The friction providing unit 200 may be supported inside the housing through the fixing cover 400 .

In addition, the friction providing unit 200, 1) the eccentric cylindrical element 221 is penetrated, and a first cylindrical bearing portion 230 that is line-contacted by a plurality of first rollers 231 exposed on the inner circumferential surface, and; 2) It may further include a ball bearing unit 240 that penetrates through and is coupled to the second shaft 220 and is disposed at the upper and lower sides of the first cylindrical bearing unit 230 , respectively. The eccentric cylindrical element 221 and the first cylindrical bearing part 230 are line-contacted by a first roller 231 . At this time, when the second motor 210 rotates the shaft, the power (rotation force) generated from the second motor 210 is transmitted through the first cylindrical bearing 230 coupled to the eccentric cylindrical element 221 in line contact. Some power loss may occur due to slip or the like in the process.

The connection unit 300 may include a first connection part 310 , an arm member 320 , and a second connection part 330 . The rotational motion generated in the friction providing unit 200 is an eccentric cylindrical element 221 , a first cylindrical bearing part 230 , a first connecting part 310 , a second cylindrical bearing part 324 , an arm member 320 , It is finally converted to a linear reciprocating movement of the upper gripper part 150 through the second connection part 330 . As described above, the welding assembly according to an embodiment may provide a motion in which the upper gripper unit 150 vibrates in one direction through a transmission path sequentially passing through a plurality of components.

The first connection part 310 includes: 1) a first coupling part 311 in which a first through hole is formed, an outer circumferential surface of the first cylindrical bearing part 230 is surface-contactedly coupled to the first through hole; 2) a first An extension 312 extending from the outer circumferential surface of the coupling portion 311 to the other side and 3) coupled to the extended portion 312 may include a second coupling portion 313 in which a second through-hole is formed. However, the first cylindrical bearing part 230 is press-fitted with the first connection part 310 so that slip does not occur between the first cylindrical bearing part 230 and the first connection part 310 .

Meanwhile, the second coupling part 314 is coupled to the female member 320 . Specifically, the arm member 320 includes an arm body 321 and a connecting rod 323 extending upwardly of the arm body 321 and coupled to the second through hole 315 . The arm body 321 is formed with a second connection part receiving groove into which one end of the second connection part 330 is inserted and coupled. In addition, pinholes through which the fixing pins are penetrated to be fitted may be formed on both sides of the arm body 321 .

Here, the connection unit 300 may further include a second cylindrical bearing part 324 through which the connection rod 323 is penetrated and fitted, and the second roller 325 is exposed to the inner and outer peripheral surfaces. At this time, the second roller 325 is preferably disposed in the longitudinal direction of the second cylindrical bearing portion (324). The second cylindrical bearing part 324 may be coupled to the connecting rod 323 in line contact by a second roller 325 . Also, the second cylindrical bearing part 324 may be line-contacted with the second coupling part 314 by the second roller 325 . As a result, slip by the second cylindrical bearing part 324 may occur between the second coupling part 314 and the connecting rod 323 in the process in which the power (rotational force) generated from the second motor 210 is transmitted. have.

In addition, the connection unit 300 may further include a second connection part 330 having one end axially rotatably coupled to the arm body 321 and the other end coupled to the upper gripper part. In addition, a pin hole through which the fixing pin passes is formed at one end of the second connection part 330 . Specifically, the second connection part 330 includes a pair of twin link plates 331 with the other end extending from one end branching for each other and facing each other, and on the lower surface of the second connection part 330, a second connection part ( A stopper protrusion 332 for limiting the linear reciprocating movement of the 330 may be formed.

On the other hand, it is preferable that the second connection part 330 is formed integrally, and the twin link plate 331 may be formed at a predetermined distance from each other. The twin link plate 331 axially rotates with respect to the upper gripper part 150 according to the elevating operation of the upper gripper part 150 . The stopper protrusion 332 blocks the movement of the second connection part 330 by the upper gripper part 150 while the second connection part 330 linearly reciprocates.

FIG. 10 is a view showing a motion of the welding assembly of FIG. 1 operating for welding; Referring to FIG. 10, the welding process of the plastic band for packaging by the welding assembly is as follows. First, a plastic band pb overlapped in two layers is placed on the upper surface of the lower gripper part 160 . And, when the user starts the operation through the input unit formed in the automatic packaging tool, the first shaft 111 of the first motor 110 is rotated in the forward direction. Then, the pressing gear element 120 engaged with the set screw element 170 presses the press unit 140 while descending. At the same time, as the pressure gear element 120 descends, the shaft spring 180 disposed on the vertical shaft 130 is compressed while having an elastic restoring force.

Then, the upper gripper unit 150 coupled to the press unit 140 and the ball bearing 159, etc., moves downward, while pressing the plastic band pb with a predetermined pressure. When the pressing operation by the first motor 110 is completed, the second motor 210 converts the rotational motion into a linear reciprocating motion through the eccentric cylindrical element 221 formed on the second shaft 220 while the shaft rotates. The process begins. Here, the rotational motion is finally converted into a linear reciprocating motion with respect to the upper gripper part 150 through the first connection part 310 and the second connection part 330 . Meanwhile, power loss occurs due to friction, slip, and the like in the process of power transmission.

In this way, the welding assembly converts the rotational force generated through the friction providing unit 200 into a linear reciprocating movement using the connection unit 300 in a state where the plastic band pb is pressed by the pressing unit 100 and , transfer this to the plastic band (pb) as a friction force, enabling bonding by local melting.

In the above, preferred embodiments of the present invention have been exemplarily described, but the scope of the present invention is not limited only to such specific embodiments, and can be appropriately changed within the scope described in the claims.

100: pressurization unit 200: friction providing unit
300: connection unit 400: fixed cover

110: first motor 120: pressurized gear element
130: vertical shaft 140: press unit
150: upper gripper part 160: lower gripper part
170: set screw element 180: shaft spring
190: cutter unit
111: first axis 112: power transmission pin
121: fitting groove 122: thread
151: gripper body 152: shaft groove
153: rectangular groove 154: link receiving groove
155: first knurled plate 156: second knurled plate
159: ball bearing
210: second motor 220: second axis
221: eccentric cylindrical element 230: first cylindrical bearing part
231: first roller 240: ball bearing part
310: first connection part 311: first coupling part
312: extension part 313: second coupling part
320: arm member 321: arm body
323: connecting rod 324: second cylindrical bearing part
325: second roller 330: second connection part
331: twin link plate 332: stopper projection

Claims (9)

a pressing unit for pressing the plastic band for packaging disposed between the upper gripper and the lower gripper when the press unit moves downward through the first motor;
It is disposed on any one side of the pressing unit, and when the press unit moves downward through the first motor, the upper gripper unit generates frictional heat in the plastic band through a second motor disposed at the upper end to generate power to reciprocate linearly. a friction providing unit; and
and a connection unit disposed between the pressing unit and the friction providing unit and configured to convert the power generated by the shaft rotation of the second motor into linear reciprocating movement of the upper gripper part; and
The friction providing unit may include a second shaft coupled to the second motor to rotate the shaft; and an eccentric cylindrical element eccentrically formed on the outer circumferential surface of the second shaft;
The friction providing unit may include: a first cylindrical bearing part through which the eccentric cylindrical element is penetrated and coupled to a line contact by a plurality of first rollers exposed on an inner circumferential surface; and a ball bearing portion that penetrates through and is coupled to the second shaft and is disposed on the upper and lower sides of the first cylindrical bearing portion, respectively,
The connecting unit includes a first coupling part having a first through-hole, the outer peripheral surface of the first cylindrical bearing part being surface-contact coupled to the first through-hole; an extension portion extending from the outer circumferential surface of the first coupling portion to the other side; and a second coupling part coupled to the extension part and having a second through hole formed therein;
The connection unit includes an arm body; and a connecting rod extending upwardly of the arm body and coupled to the second through hole;
The friction welding assembly for an automatic strapping and packaging tool further comprising a second connection part having one end rotatably coupled to the arm body and the other end coupled to the upper gripper part of the connection unit.
delete delete delete delete delete According to claim 1,
The second connection part includes a pair of twin link plates, the other end extending from one end is branched into both sides to face each other;
A friction welding assembly for an automatic strapping packaging tool having a stopper protrusion formed on a lower surface of the second connection part to limit linear reciprocating movement of the second connection part.
8. The method of claim 7,
Link receiving grooves in which the twin link plates are respectively accommodated are formed in the upper gripper part, and the twin link plate rotates axially with respect to the upper gripper part according to the raising/lowering operation of the upper gripper part. Friction for an automatic strapping packaging tool welding assembly.
According to claim 1, wherein the pressure unit
It is disposed on the lower side of the first motor, and includes a pressing gear element that is lowered by the forward axis rotation of the first motor,
The friction welding assembly for an automatic strapping packaging tool, wherein the first motor, the pressing gear element, the press part and the upper gripper part are sequentially arranged vertically downward.

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