JP2740929B2 - Method of fixing synthetic resin plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fixing a synthetic resin plate.

[0002]

BACKGROUND OF THE INVENTION The applicant of the present invention has previously disclosed in Japanese Patent Application No. Hei 3-336119 that a large-diameter head is provided at one end, an engaging portion is provided at the other end, and the center is provided at the center. At the tip of the shaft portion having a through hole with a predetermined inner diameter, a pin having a tapered surface portion on the outer periphery and having a center provided with a cut-in portion having a through hole with a smaller diameter than the through hole is provided at the center of the pressing shaft. A metal pin, which is supported in the through hole so as to be movable in the axial direction and has a sharp portion at the end substantially corresponding to the tapered surface portion, is fitted on the lower surface, and then has an engagement piece engaged with the engagement portion on the lower surface. The pressing shaft and the metal pin are integrally moved with respect to at least two plate-like bodies on which washers are arranged, and the shaft portion is press-fitted while forming a pilot hole from the sharp portion of the metal pin and the projecting portion of the pin. After engaging the engagement piece with the engagement part,
Next, a method was proposed in which a metal pin is moved with respect to a pressing shaft to press a projecting portion protruding from the plate-shaped body, thereby cutting from the shaft and fixing the plate-shaped bodies to each other.

The present invention relates to the above-mentioned Japanese Patent Application No. 3-3361.
According to the improvement of the nineteenth invention, an object thereof is to fix a resin pin by inserting a resin pin without forming a pilot hole between the synthetic resin plates in advance, and to perform the fixing work efficiently. An object of the present invention is to provide a method for fixing a synthetic resin plate.

Another object of the present invention is to provide a method of fixing a synthetic resin plate which is excellent in recyclability by eliminating the operation of separating a synthetic resin plate and a metal pin when reusing a synthetic resin plate. is there.

[0005]

[Means for Solving the Problems] Therefore, claim 1
In a method of fixing at least two superposed synthetic resin plates by engaging a washer with a part of a resin pin,
The resin pin and washer are made of the same synthetic resin as the synthetic resin plate. A piercing portion having a portion is integrally formed, and a resin pin attached to a pressing shaft is pressed toward the superposed synthetic resin plate, thereby inserting a shaft portion while forming a pilot hole in the synthetic resin plate by the piercing portion. Then, after the washer is engaged with the engaged portion of the piercing portion, the distal end of the piercing portion protruding from the washer is cut and removed by a cutting member.

According to a second aspect of the present invention, there is provided a method of inserting a resin pin into at least two synthetic resin plates which are overlapped and fixing the resin pin, wherein the resin pin is made of the same synthetic resin as the synthetic resin plate, and is provided at one end of a shaft portion. A large diameter portion and a sharp piercing portion at the other end are integrally formed, and a plurality of engaging portions extending radially over one or both of the lower portion of the shaft portion and the base end of the piercing portion are elastically provided. Deformably provided, the resin pin attached to the pressing shaft is pressed toward the superposed synthetic resin plate to form a pilot hole in the synthetic resin plate by the piercing portion, and the engaging portion is elastically deformed to the centripetal side. While the shaft portion is inserted, each of the engaging portions projecting from the lower surface of the synthetic resin plate and elastically restored is engaged with the lower surface of the synthetic resin plate to prevent it from coming off, and then the piercing portion protruding from the lower surface of the synthetic resin plate is prevented. Cut off the tip Is characterized by cutting is removed by members.

[0007]

According to the first aspect of the present invention, when the pressing shaft on which the resin pins are attached is moved toward the superposed synthetic resin plate, the synthetic resin plate is pierced by the resin pins. The shaft portion is inserted while the pilot hole is formed, and the washer is engaged with the engaged portion corresponding to the boundary between the shaft portion and the piercing portion.

Next, the tip of the piercing portion protruding from the synthetic resin plate is cut off by a cutting member to complete the fixing work of the synthetic resin plate.

According to a second aspect of the present invention, when the pressing shaft on which the resin pin is attached is moved toward the superposed synthetic resin plate, the shaft portion is formed on the synthetic resin plate while a pilot hole is formed by the piercing portion of the resin pin. It is inserted. At this time, the engaging portion is elastically deformed toward the centripetal side by the press-fit resistance to the synthetic resin plate, thereby enabling the shaft portion to be inserted.

When the engaging portion jumps out of the synthetic resin plate with the insertion of the shaft portion, the elastically returning engaging portion engages with the synthetic resin plate to prevent the resin pin from coming off. Next, the tip of the piercing portion protruding from the synthetic resin plate is cut and removed by a cutting member, and the fixing work of the synthetic resin plate is completed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a method for fixing a synthetic resin plate according to claim 1 will be described.

FIG. 1 is a perspective view of a resin pin for fixing a synthetic resin plate.

FIG. 2 is a central longitudinal sectional view of the resin pin.

FIG. 3 is a perspective view schematically showing the washer.

FIG. 4 is a perspective view of the caulking device.

The resin pin 1 is made of the same synthetic resin as the synthetic resin plates 3 and 5 described later, and has a head 7 as a large diameter portion, a shaft 9 and a piercing portion 11 integrally formed.

A head 7 is integrally formed at one end of the resin pin 1 with a diameter larger than the outer diameter of the shaft 9 and the shaft 9 is slightly longer than the thickness of the synthetic resin plates 3 and 5 to be fixed. Are formed to have the same axial length. And the head 7 and the shaft 9
An engagement hole 13 is formed at the center of the shaft portion 9 at a depth reaching the other end of the shaft portion 9. A piercing portion 11 is integrally formed at the other end of the shaft portion 9, and the piercing portion 11 has a sharp tip (the lower end shown in FIG. 1) and an upper end formed in a conical shape having a larger diameter than the shaft portion 9. I have. An engaged portion 11a is formed at a boundary between the upper portion of the piercing portion 11 and the shaft portion 9 so as to be able to engage with an engagement piece 25 described later.

The washer 15 is made of the same synthetic resin as the resin pin 1 and the synthetic resin plates 3 and 5.
The disk portion 17 is formed to have an outer diameter that fits into a large-diameter portion 35a of the support 31 described later. A ring-shaped pressing portion 19 is provided upright on the upper surface (shown in FIG. 4) of the disk portion 17. Further, a through hole 21 is formed in the center of the disk
And a plurality of slits 2 formed in the disk portion 17 extending from the inner peripheral surface of the through hole 21 to the pressing portion 19.
3 are formed in the radial direction and at equal intervals in the circumferential direction, and the engaging pieces 2 are formed by the disk portions 17 divided by the slits 23.
5 are formed.

The main body frame 29 of the caulking device 27 has a support base 31 and an upright portion 33.
5 are formed. The support hole 35 is formed so that a large-diameter portion 35a larger in diameter than the engaged portion 11a and a small-diameter portion 35b larger in diameter than the shaft portion 9 are coaxial from above.

A pair of right and left mounting blocks 39 each having a concave portion 37 are mounted on the bottom surface of the support base 31 at diagonal positions centered on the large diameter portion 35a and the small diameter portion 35b, respectively. The cutting edges of the cutting blades 41 constituting the cutting member are positioned slightly below the engaged portion 11a of the piercing portion 11 while facing each other, and are supported movably toward the center of the small diameter portion 35b.
A rod 43a of a cylinder 43 fixed to the bottom surface of the support base 31 is connected to each of the cutting blades 41, and a cutting position at which the cutting edges of the cutting blades 41 cut close to each other with the operation of each cylinder 43. And the cutting edge is moved between the mutually separated positions.

An upright portion 33 is provided on the support base 31 corresponding to the side of the support hole 35, and the upright portion 33 is provided with a slider 4.
5 is movably supported in the up-down direction. A rod 47a of a cylinder 47 having one end fixed to the upright portion 33 is connected to the slider 45, and the slider 45 approaches the support base 31 with the operation of the cylinder 47, and separates upward from the support base 31. Is moved to the upper position.

The slider 45 is provided with a pressing shaft 49 on the support base 3.
The pressing shaft 49 is attached at a position facing the first support hole 35, and has an outer diameter substantially matching the head 7.
An engaging shaft 51 is attached to the center of the lower surface of the pressing shaft 49 so as to be fitted into the engaging hole 13.

Next, the synthetic resin plates 3 and 5 using the resin pins 1
The method of fixing the above will be described.

FIG. 5 is a schematic sectional view showing a state in which the resin pin is attached to the pressing shaft.

FIG. 6 is a schematic sectional view showing a state in which a resin pin pierces a synthetic resin plate.

FIG. 7 is a schematic sectional view showing a state after the resin pin is pierced into the synthetic resin plate.

FIG. 8 is a schematic sectional view showing a cut state of the piercing portion.

A plurality of superposed synthetic resin plates 3 and 5 are shown on the support table 31 in a state where the synthetic resin plates 3 and 5 are positioned. Further, the cylinder 47 is kept in a non-operating state in a state before the fixing, and the distance between the lower end surface of the pressing shaft 49 and the upper synthetic resin plate 3 placed on the support base 31 is adjusted by the slider 45. It has been moved to an upper position with an interval greater than or equal to one axis length. Further, the cylinder 43 is kept in a non-operating state, and each cutting blade 41 is held at a position where its cutting edges are separated from each other.

After the resin pin 1 is attached to the pressing shaft 49 in the above state by inserting the engaging shaft 51 into the engaging hole 13 as shown in FIG. 5, the cylinder 47 is operated to lower the pressing shaft 49 downward. When the resin pin 1 is attached to the pressing shaft 49 as shown in FIG. 6, the piercing portion 11 pierces the synthetic resin plates 3 and 5 to form a pilot hole while the shaft portion 9 is made of synthetic resin. The plates 3 and 5 are pierced mutually. And the lower synthetic resin plate 5
The piercing portion 11 protruding from the lower surface is the through hole 2 of the washer 15.
After the insertion, the engaging piece 25 is locked to the engaged portion 11a which is a boundary between the upper portion of the piercing portion 11 and the shaft portion 9. Thereby, the resin pins 1 are prevented from falling out of the synthetic resin plates 3 and 5.

At this time, the upper surface of the pierced synthetic resin plate 3 is elastically deformed in a concave shape around the shaft portion 9 by the head 7 pressed by the pressing shaft 49, so that the upper surface of the synthetic resin plate 3 is located above. So that the head 7 does not project too much. Further, when the engaging piece 25 is locked to the engaged portion 11 a which is a boundary between the upper portion of the piercing portion 11 and the shaft portion 9, the lower surface of the synthetic resin plate 5 positioned below according to the periphery of the shaft portion 9 is raised. Since it is pressed by the pressing portion 19 and elastically deformed into a concave shape, the washer 15 is prevented from protruding too much from the lower surface of the synthetic resin plate 5 located below.

When the cylinder 43 is actuated in the above state, each cutting blade 41 moves in the direction of the solid arrow shown in FIG.
5 cuts and removes the leading end of the piercing portion 11 with which the engaging portion 5 is engaged.
When the cylinder 47 is moved back in the above state, the synthetic resin plates 3 and 5 are moved with the upward movement of the pressing shaft 49.
The fixing operation is completed by extracting the engaging shaft 51 from the engaging hole 13 of the resin pin 1 fixing the mutual.

Next, claim 2 will be described.

FIG. 9 is a perspective view of the resin pin.

FIG. 10 is a longitudinal sectional view of the resin pin.

FIG. 11 is a schematic vertical sectional view showing a state in which a resin pin is pressed into a synthetic resin plate.

FIG. 12 is a schematic vertical sectional view showing the engaged state.

The first aspect is a method for retaining the resin pin 1 using the washer 15. The second aspect is a method for retaining the resin pin without using the washer and fixing the synthetic resin plates to each other. About.

As shown in FIG. 9 and FIG.
Hole 105 having an axial length reaching the piercing portion 103 at the center of the
And three radially extending engagement portions 107 extending radially around the lower portion of the shaft portion 101 and elastically deformable.
May be resin pins 111 formed at regular intervals around the axis with a gap 109 provided.

As shown in FIGS. 11 and 12, when the resin pins 111 are press-fitted into the synthetic resin plates 113 and 115, the respective engaging portions 107 are elastically deformed toward the centripetal side by press-fitting resistance, thereby enabling press-fitting. When the respective engaging portions 107 protrude outward from the lower surface of the synthetic resin plate 115 located below, the respective elastically restored engaging portions 107 are engaged with the lower surface of the synthetic resin plate 115, and a resin pin is formed. 111 is stopped. Even in this case, the synthetic resin plate 11
The tip of the piercing portion 103 protruding from the lower surface of 5 is cut by a cutting member to reduce the protruding portion.

In the above description, the pair of cutting blades 41 movably supported by the lower surface of the support base 31 are moved by the cylinder 43 to project downward from the lower surface of the synthetic resin plate 5, and the washer 15 is engaged. Although the tip of the piercing portion 11 is cut and removed, the cutting member may be a cutting member shown in FIG.

That is, a pair of blades 93 whose cutting edges 91 face the supporting table 31 in the supporting holes 35 are supported rotatably about a shaft 95 and are attached to the supporting table 31 on the non-cutting edge side of the cutting tools 93. Rod 97a of the cylinder 97
Are connected via a link arm 99.

When the resin pins 1 are pierced into the synthetic resin plates 3 and 5, the cylinder 97 is operated so that the rod 97a moves upward, and the cutting tool 93 is moved to the cutting edge 91.
It is made to move and wait in the direction in which they are separated from each other.

When the resin pins 1 are pierced into the synthetic resin plates 3 and 5, the piercing portions 1 protruding from the lower surface of the synthetic resin plate 5 are formed.
1 is positioned between the cutting edges 91 which are spaced apart. When the rod 97a is moved downward by operating the cylinder 97 in this state, the blade 93 rotates in a direction in which the blade edges 91 approach each other, and cuts and removes the distal end of the piercing portion 11 located therebetween. .

[0044]

According to the present invention, a synthetic resin plate can be inserted and fixed without forming a pilot hole between the synthetic resin plates in advance, and the fixing operation can be performed efficiently. It is possible to provide an anchoring method.

Further, according to the present invention, it is possible to provide a method of fixing a synthetic resin plate excellent in recyclability by eliminating the operation of separating the synthetic resin plate and the metal pin when the synthetic resin plate is reused.

[Brief description of the drawings]

FIG. 1 is a perspective view of a resin pin for fixing a synthetic resin plate.

FIG. 2 is a central longitudinal sectional view of a resin pin.

FIG. 3 is a perspective view schematically showing a washer.

FIG. 4 is a perspective view of a caulking device.

FIG. 5 is a schematic sectional view showing a state in which a resin pin is attached to a pressing shaft.

FIG. 6 is a schematic sectional view showing a state in which a resin pin is pierced into a synthetic resin plate.

FIG. 7 is a schematic cross-sectional view showing a state after a resin pin pierces a synthetic resin plate.

FIG. 8 is a schematic sectional view showing a cutting state of a piercing portion.

FIG. 9 is a perspective view schematically showing a resin pin.

FIG. 10 is a longitudinal sectional view of a resin pin.

FIG. 11 is a schematic vertical sectional view showing a press-fit state of a resin pin.

FIG. 12 is a schematic vertical sectional view showing an engaged state.

FIG. 13 is a schematic sectional view showing a modified embodiment of the cutting member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Resin pin 3 Synthetic resin plate 5 Synthetic resin plate 7 Head as large diameter part 9 Shaft part 11 Piercing part 11a Engaged part 15 Washer 41 Cutting blade as cutting member 49 Pressing shaft

Claims (2)

(57) [Claims] 1. A method for fixing at least two superposed synthetic resin plates by engaging a washer with a part of a resin pin, wherein the resin pin and the washer are made of the same synthetic resin as the synthetic resin plate. A large diameter portion was formed at one end of the shaft portion of the pin, and a piercing portion having a sharpened tip at the other end and an engaged portion whose base end was larger in diameter than the shaft portion was integrally formed and attached to the pressing shaft. After the resin pin is pressed toward the overlapped synthetic resin plate to form a pilot hole in the synthetic resin plate by the piercing portion, the shaft portion is inserted and the washer is engaged with the engaged portion of the piercing portion. And a cutting member for cutting and removing the tip of the piercing portion protruding from the washer. 2. A method of inserting and fixing a resin pin to at least two synthetic resin plates which are overlapped with each other, wherein the resin pin is made of the same synthetic resin as the synthetic resin plate, and a large diameter portion is provided at one end of a shaft portion. In addition, a sharp piercing portion is integrally formed at the other end, and a plurality of engaging portions radially extending over one or both of the lower portion of the shaft portion and the base end of the piercing portion are provided so as to be elastically deformable. By pressing the resin pin attached to the pressing shaft toward the synthetic resin plate that has been superimposed, a pilot hole is formed in the synthetic resin plate by the piercing portion, and the shaft portion is elastically deformed toward the centripetal side while the engaging portion is formed. After being inserted, the respective engagement portions projecting from the lower surface of the synthetic resin plate and elastically restored are engaged with the lower surface of the synthetic resin plate to prevent them from coming off, and then the leading end of the piercing portion projecting from the lower surface of the synthetic resin plate is cut. Cutting by member Method of fixing the synthetic resin plate, characterized in that the removed by.