KR102536906B1 - Pellet manufacturing equipment - Google Patents

Abstract

The present invention, a mixing supply unit that is supplied while the shredded wood raw material is input and mixed; a molding unit that is rotated to extrude and mold the wood raw material supplied from the mixing supply unit into a predetermined thickness; a guide unit for guiding the wood raw material supplied from the mixing supply unit toward the central portion of the forming unit to prevent loss of the wood material to the outside of the forming unit and guiding the wood material to be evenly supplied to the entire inside of the forming unit; a coupling bolt integrally connecting the guide part to the molded part; and an offset portion preventing vibration generated by the rotational motion of the forming portion from being transmitted to the coupling bolt.

Description

Pellet manufacturing equipment {Pellet manufacturing equipment}

The present invention relates to a pellet manufacturing apparatus, and more particularly, to prevent deformation or damage of the connection between the molding part and the guide part due to vibration generated by the operation of the molding part which is rotated for pellet production, and It relates to a pellet manufacturing device capable of reducing the time and cost required for replacing a molded part by easily attaching and detaching the connection between the molded part and the guide when replacing the molded part for a change in shape or size.

Fossil fuels such as petroleum are gradually depleting resources, and the use of fossil fuels is pointed out as a major cause of global warming.

With the rise of these global environmental problems and the growing interest in eco-friendly energy sources, the development of renewable energy, above all, energy sources that can replace fossil fuels is being requested.

In particular, considering the current situation in which the global economic recession is prominent due to high oil prices, the development of alternative energy sources is more urgent.

An example of the development of such an energy source may be a wood resource. Conventionally, wood resources such as sawdust and miscellaneous trees were not used as an energy source and were mainly incinerated.

Recently, much attention has been focused on technologies for manufacturing aged fuel using sawdust, especially pelletized energy source technology development, and development is accelerating.

As an example, the technology disclosed in Registered Patent No. 0878051 (2009.01.05) 'Wood pellet manufacturing method and wood pellet manufacturing equipment' may be mentioned.

Most of the conventional energy technologies of wood resources are manufactured by processing wood into sawdust, drying it, crushing it, molding it, processing it into pellets, and then packaging and commercializing it.

However, the above-described technologies have disadvantages in that the process of drying and crushing the processed sawdust into pellets is separated from each other, so large-scale equipment is required, which increases equipment costs and also requires a lot of space occupied by the equipment.

In addition, since the sawdust must be moved along a complex and long conveyor including a hot stove to go through this process, there is a disadvantage in that the production efficiency is also lowered.

In order to solve the above problems, a wood pellet manufacturing apparatus has been developed, and a wood pellet manufacturing apparatus according to the prior art includes a crusher for crushing forest waste, a crusher for crushing the shredded forest waste, and a dryer for drying the crushed wood powder. In a wood pellet manufacturing apparatus including a molding machine for manufacturing dried wood flour into pellets and a packaging machine for packaging the molded pellets, a single processing machine in which the functions of a grinder and a dryer are integrated, but the processing machine is a closed structure processing machine A housing, an induction disk installed in the center of the bottom of the processing machine housing and rotated at high speed, a plurality of cutters installed along the rim of the induction disk, disposed on the top of the induction disk, and an input hole formed in the center, radially An input block having an inclined surface toward the input hole, an input pipe extending through the upper surface of the processing machine housing to be close to the inclined surface of the input block, a steam discharge pipe installed on the upper surface of the processing machine housing to discharge internal steam, and a processing machine housing It is connected to the upper end of, separates wood flour and air, and includes a cyclone equipped with a blower at the upper end, and an air recovery pipe connecting the blower and the processing machine housing.

The background art of the present invention is disclosed in Republic of Korea Patent Registration No. 10-1075312 (Announced on November 03, 2011, title of the invention: Wood pellet manufacturing apparatus and manufacturing method).

The pellet manufacturing apparatus according to the prior art has a problem in that the fastening member installed in the connection part is deformed or damaged due to the generation of vibration in the connection part between the parts by the technical configuration that rotates at high speed, such as an induction disk, and customer demand If the size or shape of the pellets needs to be changed, the technical configuration for molding the pellets must be replaced. At this time, the fastening member may be deformed or damaged while disconnecting the technical configurations and replacing and reassembling the parts, There is a problem in that it is difficult to reduce time and cost required for parts replacement.

Therefore, there is a need to improve this.

The present invention prevents deformation or damage of the connection between the molding part and the guide part due to the vibration generated by the operation of the molding part rotating for pellet production, and when replacing the molding part to change the shape or size of the pellets. An object of the present invention is to provide a pellet manufacturing apparatus capable of reducing the time and cost required for replacing a molded part by easily detaching the connection between the molded part and the guide part.

The present invention, a mixing supply unit that is supplied while the shredded wood raw material is input and mixed; a molding unit that is rotated to extrude and mold the wood raw material supplied from the mixing supply unit into a predetermined thickness; a guide unit for guiding the wood raw material supplied from the mixing supply unit toward the central portion of the forming unit to prevent loss of the wood material to the outside of the forming unit and guiding the wood material to be evenly supplied to the entire inside of the forming unit; a coupling bolt integrally connecting the guide part to the molded part; and an offset portion preventing vibration generated by the rotational motion of the forming portion from being transmitted to the coupling bolt.

In addition, the mixing supply unit of the present invention is provided with an inlet on one side and extends in the other direction, an outlet is formed on the other end, and a transfer pipe in which a screw for mixing and transporting wood raw materials is installed; and a supply pipe connected to the outlet, extending in one direction, connected to the guide, and having the screw installed therein to mix and transport wood raw materials.

In addition, the forming unit of the present invention, a drum member in which a hole into which the wood raw material supplied through the guide is input is formed on the front side and formed in a cylindrical shape constituting a storage space, and a plurality of discharge holes are formed on the circumferential surface; a driving shaft connected to a rotating plate supporting the drum member and rotating the drum member by transmitting power transmitted from the driving unit; And a plurality of rollers installed so as to be able to revolve inside the drum member and pressurizing the wood raw material supplied along the guide toward the discharge hole to perform an extrusion process to produce pellets having a thickness corresponding to the diameter of the discharge hole. It is characterized by including a member.

In addition, the roller member of the present invention is rotatably installed in a connecting portion installed on a fixed shaft inserted through the drive shaft and the rotating plate, and a plurality of the roller members are symmetrical about the fixed shaft by the connecting portion. It is installed eccentrically from the fixed shaft to achieve, characterized in that arranged in close contact with the inner wall of the drum member.

In addition, the guide portion of the present invention, the flange connected to the hole portion edge of the drum member by the coupling bolt; and a feed cone including an inclined portion that extends obliquely from the flange toward the central portion to form a supply hole, and the wood raw material input through the supply hole is slid along the inclined portion and guided to the central portion of the drum member. do.

In addition, the offset portion of the present invention, the support plate interposed between the guide portion and the head of the coupling bolt; a spacing member interposed between the head of the coupling bolt and the guide portion while maintaining a distance from the support plate; and an elastic providing part interposed between the support plate and the spacing member to prevent the head of the coupling bolt from colliding with the guide part due to vibration transmitted from the molding part.

In addition, the elastic providing unit of the present invention, a first bushing made of an elastic material and in close contact with the inner wall of the support plate; a second bushing made of an elastic material and in close contact with the inner wall of the spacing member; It is characterized in that it comprises a buffer member interposed between the first bushing and the second bushing and made of an elastic material.

In addition, when the coupling bolt of the present invention is inserted into the offset portion to pass through the guide portion and inserted into the molded portion, the coupling bolt is engaged with the molded portion to integrally couple the guide portion and the molded portion, When replacing the molded part, the guide part may be separated from the molded part by pulling a release lever to release the engagement made with the molded part.

In the pellet manufacturing apparatus according to the present invention, since the feed cone is installed to form a guide so that the wood raw material is evenly supplied to the drum member in which pellet molding is performed, the wood raw material supplied to the drum member inlet side is guided to the drum member center side by the feed cone. It is possible to prevent the loss of wood raw material to the outside of the drum member, and an offset unit is provided to prevent vibration generated by the member motion of the drum member from being transmitted to the coupling bolt at the fastening portion of the coupling bolt coupling the feed cone to the drum member. Therefore, there is an advantage in preventing the coupling bolt and the coupling bolt fastening portion from being deformed or damaged.

In addition, in the pellet manufacturing apparatus according to the present invention, the support plate and the spacing member are disposed in the interval between the coupling bolt head and the feed cone while maintaining a distance from each other, and a plurality of elastic materials are formed in the interval between the support plate and the spacing member. Since the two bushings and the buffer member are interposed, the vibration generated when the drum member rotates is not transmitted to the coupling bolt, and the bushing and the buffer member compress or expand to offset the vibration, so that the vibration is transmitted to the fastening part of the coupling bolt more effectively. There are benefits to avoiding it.

In addition, since the pellet manufacturing apparatus according to the present invention is provided with a replacement part that can be coupled to or separated from the feed cone and drum member in a one-touch manner without a separate operation of tightening or loosening the coupling bolt, the shape or size of the pellet is required to be changed and the drum When replacing a member with a drum member of a different shape or size, the drum member can be replaced by simply removing the coupling bolt from the feed cone and drum member by manipulating the replacement part, and the time and cost required for replacing the drum member can be reduced. There are benefits to savings.

1 is a configuration diagram showing a pellet manufacturing apparatus according to an embodiment of the present invention.
2 is an exploded perspective view showing a rotating plate, a drum member and a feed cone of a pellet manufacturing apparatus according to an embodiment of the present invention.
Figure 3 is a photograph showing the offset unit installation structure of the pellet manufacturing apparatus according to an embodiment of the present invention.
Figure 4 is a photograph showing the decomposition and coupling state of the offset portion of the pellet manufacturing apparatus according to an embodiment of the present invention.
Figure 5 is a cross-sectional view showing an offset portion of the pellet manufacturing apparatus according to an embodiment of the present invention.
Figure 6 is a cross-sectional view showing an offset portion and replacement portion of the pellet manufacturing apparatus according to another embodiment of the present invention.

Hereinafter, one embodiment of a pellet manufacturing apparatus according to the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator.

Therefore, definitions of these terms will have to be made based on the content throughout this specification.

1 is a configuration diagram showing a pellet manufacturing apparatus according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a rotating plate, a drum member and a feed cone of the pellet manufacturing apparatus according to an embodiment of the present invention , Figure 3 is a photograph showing the offset unit installation structure of the pellet manufacturing apparatus according to an embodiment of the present invention.

In addition, Figure 4 is a photograph showing the disassembled state and coupled state of the offset unit of the pellet manufacturing apparatus according to an embodiment of the present invention, Figure 5 is a cross-sectional view showing the offset unit of the pellet manufacturing apparatus according to an embodiment of the present invention am.

1 to 5, the pellet manufacturing apparatus according to an embodiment of the present invention, the mixing supply unit 10 supplied while the shredded wood raw material is input and mixed, and the wood raw material supplied from the mixing supply unit 10 The molding unit 50, which is rotated to mold by extruding to a certain thickness, and the wood raw material supplied from the mixing supply unit 10 is guided to the center of the molding unit 50, so that the wood raw material is lost to the outside of the molding unit 50 A guide part 30 for preventing and guiding the wood raw material to be evenly supplied to the entire inside of the molding part 50, and a coupling bolt 89 integrally connecting the guide part 30 to the molding part 50, It includes an offset part 80 that prevents vibration generated by the rotational motion of the molding part 50 from being transmitted to the coupling bolt 89.

Therefore, the wood raw material supplied along the mixing supply unit 10 is mixed with a fluid such as water supplied to the mixing supply unit 10, and then supplied to the molding unit 50 along the guide unit 30, and then from the drive unit 70. As the molding unit 50 is rotated by the transmitted power, the wood raw material is extruded to the outside of the molding unit 50 to be made into pellets of a certain size.

In the mixing supply unit 10 of this embodiment, an inlet 14 is provided on one side and extends in the other direction, an outlet is formed on the other end, and a screw 18 for mixing and transporting wood raw materials is installed therein. It includes a pipe 12 and a supply pipe 16 connected to the discharge port, extending in one direction, connected to the guide part 30, and having a screw 18 installed therein to mix and transport wood raw materials.

Therefore, when the wood raw material is supplied through the inlet 14, it is transported to the other side along the transfer pipe 12, and the water and the wood raw material are mixed and further pulverized by the rotational motion of the screw 18, and the As it falls downward from the other end, it is put into the supply pipe 16, mixed by the rotational motion of the screw 18, moved to one side, and then discharged from one end of the supply pipe 16 and moved to the guide part 30.

The guide part 30 of this embodiment is made of a duct extending from one end of the supply pipe 16 to the molded part 50, and the end of the duct is inserted into the feed cone constituting the guide part 30 and moves along the feed cone. Wood raw material to be supplied to the central portion of the molding unit (50).

In the molding part 50 of this embodiment, a hole into which the wood raw material supplied through the guide part 30 is input is formed on the front side and formed in a cylindrical shape constituting a storage space, and a plurality of discharge holes 56 on the circumferential surface. Is connected to the drum member 52 and the rotation plate 55 supporting the drum member 52 is formed, and the drive shaft 54 for rotating the drum member 52 by transmitting the power transmitted from the drive unit 70 and , It is installed so as to be able to revolve inside the drum member 52, and presses the wood raw material supplied along the guide part 30 toward the discharge hole 56 to proceed with the extrusion process, and the thickness corresponding to the diameter of the discharge hole 56 It includes a plurality of roller members 57 for producing pellets made of.

The drum member 52 is formed in a cylindrical shape in which the front surface is opened to form a hole portion, the rear surface is sealed, and a plurality of discharge holes 56 are formed on the circumferential surface, and a rotating plate 55 is connected to the rear surface to form a pipe shape. It is connected to the drive shaft 54 made of.

Therefore, when power is transmitted to the drive shaft 54 from the drive unit 70 composed of the motor 72 and the speed change unit 74, the drive shaft 54, the rotation plate 55, the drum member 52 and the feed cone are rotated while the rollers are rotated. While pressing the wood material interposed between the member 57 and the inner wall of the drum member 52 toward the discharge hole 56, the wood material is extruded through the discharge hole 56 to produce pellets of a certain thickness.

The roller member 57 of this embodiment is rotatably installed on a connecting portion 59 installed on a fixed shaft 58 inserted through a driving shaft 54 and a rotating plate 55, and a plurality of roller members 57 It is installed eccentrically from the fixed shaft 58 so as to be symmetrical about the fixed shaft 58 by the connecting portion 59 and is placed in close contact with the inner wall of the drum member 52.

Therefore, when wood raw material is injected into the drum member 52, the wood raw material is moved to the circumferential side of the inner wall of the drum member 52 by the rotational motion of the drum member 52, and is placed in close contact with the inner wall of the drum member 52. While being pressed toward the discharge hole portion 56 by the roller member 57 to be, pellets are produced with a thickness corresponding to the diameter of the discharge hole portion 56.

The guide part 30 of this embodiment includes a flange 32 connected to the edge of the hole of the drum member 52 by a coupling bolt 89, and a supply hole 36 extending obliquely from the flange 32 toward the central portion. Since it is made of a feed cone including an inclined portion 34, the wood raw material input through the supply hole 36 slides along the inclined portion 34 and is guided to the central portion of the drum member 52.

The offset portion 80 of this embodiment maintains a gap between the support plate 82 and the support plate 82 interposed between the head of the coupling bolt 89 and the guide portion 30, and the coupling bolt 89 The spacing member 84 interposed between the head and the guide portion 30, and the coupling bolt 89 interposed between the support plate 82 and the spacing member 84 by vibration transmitted from the molding portion 50 ) includes an elastic providing part 88 preventing the head part from colliding with the guide part 30.

Therefore, although the coupling bolt 89 passes through the flange 32 and is fastened to the drum member 52, the head of the coupling bolt 89 maintains a distance from the flange 32, and the support plate 82 on the bottom of the head Is arranged in close contact, the bottom surface of the spacing member 84 is arranged in close contact with the flange 32, the first bushing 88a made of an elastic material between the support plate 82 and the spacing member 84, 2 The bushing 88b and the buffer member are interposed to prevent the head of the coupling bolt 89 from colliding with the flange 32 as the gap between the support plate 82 and the spacing member 84 narrows or widens, thereby preventing the drum member from colliding with the flange 32. Vibration generated by the rotational motion of (52) is prevented from being transmitted as an impact to the coupling bolt (89).

In addition, the elastic providing unit 88 of this embodiment includes a first bushing 88a made of an elastic material and in close contact with the inner wall of the support plate 82, and a second bushing 88a made of an elastic material and in close contact with the inner wall of the spacing member 84. It includes a bushing 88b and a buffer member interposed between the first bushing 88a and the second bushing 88b and made of an elastic material.

The spacing member 84 of this embodiment is formed in a disk shape in which a hole portion through which the coupling bolt 89 passes is formed in the central portion, and a protruding hole portion 86 extending from the hole portion formed in the central portion toward the support plate 82 side is formed. It is penetrated with the coupling bolt 89 and forms a pillar inserted into the first bushing 88a, the second bushing 88b and the buffer member.

In addition, the buffer member of the present embodiment, the first buffer ring member (88c) disposed in close contact with the protruding hole portion 86, and the first buffer ring member (88c) and the distance between the support plate 82 and the spacing member (84) Since it includes the second buffer ring member 88d interposed therebetween, it is possible to more effectively offset the impact transmitted from the drum member 52.

Reference numeral 87 denotes a fastening member 87 coupled to the protruding hole 86 through the support plate 82, and reference numeral 89a denotes an O-ring 89a fitted to the outer wall of the inclined portion 34.

Figure 6 is a cross-sectional view showing an offset portion and replacement portion of the pellet manufacturing apparatus according to another embodiment of the present invention.

Referring to Figure 6, in the pellet manufacturing apparatus according to another embodiment of the present invention, when the coupling bolt 89 is inserted into the offset portion 80 to pass through the guide portion 30 and inserted into the molding portion 50, the coupling bolt It further includes a replacement part 90 that integrally couples the guiding part 30 and the molding part 50 by engaging the 89 to the molding part 50.

The replacement part 90 of this embodiment includes a plurality of hook members 92 protruding from the end of the coupling bolt 89 in the lateral direction, and the inner wall of the groove of the drum member 52 opposite to the hook member 92. When the coupling bolt 89 is inserted into the groove of the drum member 52, the hook member 92 is inserted and interposed between the coupling groove 96 and the plurality of hook members 92 to be engaged. An elastic member 96 for providing elastic force for pressing the coupling bolt 89 outwardly, and the hook member 92 retreating to the inside of the coupling bolt 89 to form the hook member 92 and the coupling groove 96 ) Includes a release unit 97 for releasing the engaging engagement.

Therefore, when the operator penetrates the coupling bolt 89 through the flange 32 and inserts it into the groove of the drum member 52, the inclined surface of the hook member 92 is pressed by the flange 32 and inserted into the coupling bolt 89. While the coupling bolt 89 is inserted, and the insertion of the coupling bolt 89 is completed and the hook member 92 is placed opposite to the coupling groove 96, the hook member ( 92) protrudes outward from the coupling bolt 89 and is inserted into the coupling groove 96 to engage in engagement.

As described above, the pellet manufacturing process proceeds by combining the feed cone with the drum member 52, and when replacing the molding part 50 of the present embodiment to manufacture pellets of different shapes and sizes, the guide part 30 By pulling the release lever 98 to be separated from the molded part 50, the engagement made with the molded part 50 is released.

The release part 97 of this embodiment includes a wire 99 extending from the rear surface of the hook member 92 to the outside of the head of the coupling bolt 89, and a release lever 98 installed at the end of the wire 99. ).

Therefore, when the operator pulls the release lever 98, tension is provided to the wire 99 so that the plurality of hook members 92 are retreated to the inside of the coupling bolt 89 while engaging the hook member 92 and the coupling groove 96. can be released.

This prevents deformation or damage of the connection between the molding part and the guide part due to vibration generated by the operation of the molding part which is rotated for pellet production, and when replacing the molding part to change the shape or size of the pellets. It is possible to easily attach and detach the connection between the unit and the guide unit, thereby providing a pellet manufacturing device that can reduce the time and cost required for replacing the molding unit.

Although the present invention has been described with reference to an embodiment shown in the drawings, this is merely exemplary, and those skilled in the art can make various modifications and equivalent other embodiments therefrom. will understand

In addition, although the pellet manufacturing apparatus has been described as an example, this is only illustrative, and the manufacturing apparatus of the present invention may be used for other products other than the pellet manufacturing apparatus.

Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: mixing supply unit 12: transfer pipe
14: inlet 16: supply pipe
18: screw 30: guide unit
32: flange 34: inclined portion
36: supply hole part 50: molding part
52: drum member 54: drive shaft
55: rotation plate 56: discharge hole
57: roller member 58: fixed shaft
59: connection part 70: driving part
72: motor 74: gearbox
80: offset portion 82: support plate
84: spacing member 86: protruding hole
87: fastening member 88: elasticity providing unit
88a: first bushing 88b: second bushing
88c: first buffer ring member 88d: second buffer ring member
89: coupling bolt 89a: O-ring
90: replacement part 92: hoot member
94: coupling groove 96: elastic member
97: release part 98: release lever
99: wire

Claims (8)

A mixing supply unit in which the crushed wood raw materials are input and supplied while being mixed;
a molding unit that is rotated to extrude and mold the wood raw material supplied from the mixing supply unit into a predetermined thickness;
a guide unit for guiding the wood raw material supplied from the mixing supply unit toward the central portion of the forming unit to prevent loss of the wood material to the outside of the forming unit and guiding the wood material to be evenly supplied to the entire inside of the forming unit;
a coupling bolt integrally connecting the guide part to the molded part; and
And an offset unit for preventing vibration generated by the rotational motion of the molding unit from being transmitted to the coupling bolt,
The guide,
A flange connected to the rim of the hole of the drum member constituting the forming part by the coupling bolt; and
It consists of a feed cone including an inclined portion extending obliquely from the flange toward the central portion to form a supply hole,
Pellet manufacturing apparatus, characterized in that the wood raw material introduced through the supply hole is slid along the inclined portion and guided to the central portion of the drum member.
The method of claim 1, wherein the mixing supply unit,
A transfer pipe having an inlet at one side and extending in the other direction, an outlet at the other end, and a screw installed therein to mix and transfer wood raw materials; and
Pellet manufacturing apparatus characterized in that it comprises a supply pipe connected to the outlet and extending in one direction connected to the guide portion, the screw for mixing and transporting the wood raw material therein is installed.
The method of claim 1, wherein the molding part,
The drum member having a front surface of a hole into which wood raw material supplied through the guide is introduced and a cylindrical shape constituting a storage space, and having a plurality of discharge holes formed on a circumferential surface of the drum member;
a driving shaft connected to a rotating plate supporting the drum member and rotating the drum member by transmitting power transmitted from the driving unit; and
A plurality of roller members installed to be revolving inside the drum member and pressurizing the wood raw material supplied along the guide toward the discharge hole to perform an extrusion process to produce pellets having a thickness corresponding to the diameter of the discharge hole. Pellet manufacturing apparatus comprising a.
According to claim 3,
The roller member is rotatably installed in a connecting portion installed on a fixed shaft inserted through the driving shaft and the rotating plate,
A plurality of the roller members are installed eccentrically from the fixed shaft so as to be symmetrical about the fixed shaft by the connecting portion, characterized in that disposed in close contact with the inner wall of the drum member.
delete The method of claim 1, wherein the offset unit,
a support plate interposed between the head of the coupling bolt and the guide;
a spacing member interposed between the head of the coupling bolt and the guide portion while maintaining a distance from the support plate; and
Pellet manufacturing apparatus characterized in that it comprises an elastic providing portion interposed between the support plate and the spacing member to prevent the head portion of the coupling bolt from colliding with the guide portion by vibration transmitted from the molding portion.
The method of claim 6, wherein the elasticity providing unit,
A first bushing made of an elastic material and in close contact with the inner wall of the support plate;
a second bushing made of an elastic material and in close contact with the inner wall of the spacing member;
Pellet manufacturing apparatus characterized in that it comprises a buffer member interposed between the first bushing and the second bushing and made of an elastic material.
According to claim 1,
When the coupling bolt is inserted into the offset portion to pass through the guide portion and inserted into the molded portion, the coupling bolt is engaged with the molded portion to integrally couple the guide portion and the molded portion;
Pellet manufacturing apparatus characterized in that it further comprises a replacement portion for releasing the engagement made with the molding portion by pulling the release lever to separate the guide portion from the molding portion when replacing the molding portion.

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