JP2018099763A - Drill for drilling clip hole in weather strip, clip hole drilling unit, and clip hole drilling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drill for drilling a clip hole, which dispenses with work for removing drilling leavings, and a drilling unit using the same.SOLUTION: A drill 22 has one cutting edge formed as a peripheral edge of a tip. A drilling unit comprises a groove-shaped set part 10, an electric drill 20 that is fitted with the drill 22, a holding pin 30, and a cutting blade 40. When a hole is drilled, both ends of a weather strip 100 are cut with the cutting blade 40 while the weather strip 100 is held in the state of being pressed to be crushed by the holding pin 30. Additionally, a clip hole 103 is drilled by the electric drill 20.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a clip hole drill for use in drilling a clip hole in a weather strip, a clip hole drilling apparatus and a clip hole drilling method for drilling a clip hole in a weather strip.

  As shown in FIG. 1, a weather strip 100 disposed on the periphery of a door opening of an automobile integrally includes a hollow cylindrical hollow seal portion 101 and a flat plate-like attachment portion 102, as shown in FIG. As shown in FIG. 1D, the clip 110 is attached to the mounting portion 102, and the clip 110 is fitted to the vehicle body 120 as shown in FIG. The weather strip 100 is made of rubber or elastomer, and after being extruded into a predetermined shape as shown in FIG. 1A, a clip hole 103 for mounting a clip 110 as shown in FIG. 1B. Is manufactured through a process of perforating the mounting portion 102.

  Here, the clip hole is generally often drilled with an electric drill. As a drill for drilling used in an electric drill (drill bit), typically, the central portion in the radial direction of the drill tip is pointed, and a plurality of pieces are cut outward from the central portion in the radial direction. A twist drill whose blade extends radially (referred to herein as a “center blade drill” for convenience of description) is exemplified.

  However, such a center blade drill is mainly suitable for a material having relatively high rigidity such as wood or metal, and is not suitable for processing a soft material such as rubber or elastomer. In other words, the center blade drill is a principle that drills holes while cutting the workpiece from the center to the outside as it rotates, so if you use this for a soft material, the peripheral part is caught and a hole with a beautiful shape is drilled. It is hard to do. In addition, when a clip hole is drilled with an electric drill, the occurrence of a punch hole is unavoidable, which causes a processing problem.

  Therefore, for example, Patent Document 1 below is disclosed as a technique for punching a clip hole or the like in a weather strip that addresses such a problem. In Patent Document 1, a clip hole or the like is melt-drilled in a weather strip by a hot rod or a laser.

JP 2000-118323 A

  In Patent Document 1, since a clip hole or the like is drilled by melting a part of the weather strip, a punching flaw does not occur. However, it is difficult to precisely control the size and shape of the holes in melt drilling. In addition, since heat is used, running cost increases. Moreover, no particular mention is made of an apparatus or method for efficiently drilling a plurality of holes.

  Therefore, it is desirable that the clip hole is also drilled by an electric drill. However, as described above, the shape of the hole becomes a problem in the center blade drill of the principle of drilling the hole. In order to solve this problem, it is conceivable to use a drill having a cutting edge formed on the peripheral edge of the front end (referred to as a “peripheral edge drill” for the central edge drill in the present specification for convenience of explanation).

  The peripheral edge drill rotates along the outer peripheral edge of the hole to be drilled, and is a principle of hollowing out the hole, so that a hole having a desired size can be clearly drilled. As such peripheral edge drills, there have conventionally been a punch blade type in which the entire peripheral edge of the drill has become a cutting edge, and a multiple-blade type in which a plurality of cutting edges protrude from the peripheral edge of the drill. .

  However, when the clip hole is drilled with a punch blade type peripheral edge drill, a punch hole remains in the hollow space of the drill surrounded by the peripheral edge. In this case, continuously drilling a plurality of clip holes is extremely complicated because it is necessary to remove the punch hole from the drill every time a hole is drilled, and is not suitable for practical continuous machining.

  On the other hand, in a multi-blade type peripheral edge drill, the entire circumference is not surrounded by the cutting edge, so that no drill bit remains on the drill side. However, since the escape area of the punch hole is blocked by the plurality of cutting edges during drilling, the punch hole remains in the clip hole after drilling. In this case, it is necessary to remove the punch hole from the clip hole after punching.

  Accordingly, the present invention solves the above-described problem, and a weather strip clip hole drill for eliminating the need for removing punch holes, a clip hole drilling apparatus and a clip hole drill capable of efficiently drilling a plurality of clip holes. It aims to provide a method.

For this purpose, the present invention adopts the following means.
[1] A drill that is used to be attached to the drill means when a drill hole is drilled by a drill means in a weather strip disposed via a clip on the periphery of a door opening of an automobile,
A weatherstrip drilling hole drill having a cutting edge protruding from the periphery of the tip.
[2] A clip hole punching device for punching a clip hole in a weather strip disposed via a clip to the periphery of a door opening of an automobile,
A set section for setting the weather strip;
Drill means for drilling clip holes in the weatherstrip;
Holding means for holding the weather strip set in the set part;
With
The set portion is formed as a groove-like concave space that can receive and accommodate a weatherstrip,
The drill means is provided so as to be able to advance and retreat inside and outside the set portion,
The holding means is provided to be able to advance and retreat in and out of the set part at a position opposite to the drill means across the set part.
In the neutral state before drilling the clip hole, the drill means and the holding means are located outside the set part,
When the weather strip is set in the set portion and the clip hole is drilled, the holding means protrudes into the set portion and presses and holds the weather strip so that the clip hole is drilled by the drill means. A clip hole drilling device configured to be configured.
[3] A plurality of the drill means are juxtaposed along the longitudinal direction of the set part,
The clip hole punching device according to [2], wherein the holding means is a plurality of holding pins arranged in parallel corresponding to the drill means.
[4] Each of the drill means is provided on a single base plate that can advance and retreat with respect to the set portion, and all the drill means advance and retreat simultaneously,
The clip hole punching device according to [3], wherein the holding means are connected to each other by a connecting rod, and all the holding means move forward and backward at the same time.
[5] Further, a cutting blade for cutting the weather strip set in the set portion is provided,
The cutting blade is provided so as to be able to advance and retreat into and out of the set part,
In the set portion, a weather strip preliminary body that has been pre-cut to a rough length through extrusion molding is set, and when the clip hole is drilled, the weather strip preliminary body is adjusted to the length of the final product by the cutting blade. The clip hole punching device according to any one of [2] to [4], which is cut.
[6] The cutting blade is moved back and forth by the back and forth means,
When the advancing / retreating means causes the cutting blade to protrude into the set portion, the advancing / retreating means causes the cutting blade and the holding means to simultaneously protrude into the set portion by pressing the connecting rod by the advancing / retreating means. The clip hole punching device according to [5], wherein the cutting blade and the holding means are both advanced and retracted.
[7] The cutting blade and the advancing / retreating means for moving the cutting blade forward and backward are provided at two locations on both sides in the longitudinal direction of the set portion,
The clip hole punching device according to [6], wherein the connecting rod is pressed from both side portions in the longitudinal direction by the both advancing and retracting means.
[8] The drill means is capable of moving forward and backward with respect to the set portion through a through hole provided in a side wall of the set portion.
The clip hole punching device according to any one of [2] to [7], wherein a bottom surface of the through hole is an inclined surface inclined downward from the inside to the outside of the set portion.
[9] The clip hole drilling device according to any one of [2] to [8], wherein the drill attached to the drill means is the clip hole drill for drilling according to [1].
[10] The weather strip has a hollow cylindrical seal portion and an attachment portion to which the clip is attached,
The clip hole punching device according to any one of [2] to [9], wherein an amount of protrusion of the drill into the set portion is smaller than a total thickness of the seal portion and the attachment portion.
[11] A clip hole drilling method for drilling a clip hole in a weather strip disposed via a clip to the periphery of a door opening of an automobile,
Drill means for punching a clip hole in the weather strip across a set portion formed as a groove-like concave space capable of receiving and accommodating the weather strip, and holding means for holding the weather strip set in the set portion , Facing each other,
In the neutral state before drilling the clip hole, the drill means and the holding means are located outside the set part,
When the weather strip is set in the set portion and the clip hole is drilled, the holding means protrudes into the set portion and presses and holds the weather strip so that the clip hole is drilled by the drill means. , Clip hole drilling method.
[12] A plurality of the drilling means are juxtaposed along the longitudinal direction of the weather strip,
The clip hole punching method according to [11], wherein the holding means is a plurality of holding pins arranged in parallel corresponding to the drill means.
[13] Each of the drill means is provided on a single base plate that can move forward and backward with respect to the set portion, and all the drill means simultaneously move forward and backward with respect to the set portion,
The clip hole punching method according to [12], wherein the holding means are connected to each other by a connecting rod, and all the holding means are moved forward and backward simultaneously with respect to the set portion.
[14] Further, in order to cut the weather strip set in the set part, a cutting blade capable of moving back and forth inside and outside the set part is provided,
In the set portion, a weather strip preliminary body that has been pre-cut to a rough length through extrusion molding is set, and when the clip hole is drilled, the weather strip preliminary body is adjusted to the length of the final product by the cutting blade. The clip hole drilling method according to any one of [11] to [13], wherein cutting is performed.
[15] The cutting blade is moved back and forth by advancing and retracting means,
The holding member is constantly urged toward the outside of the set part by a spring,
When the cutting blade is protruded into the set part by the advance / retreat means, the advancement / retraction means is arranged so that the connecting blade is pressed by the advance / retreat means so that the cutting blade and the holding means protrude into the set part at the same time. The clip hole drilling method according to [14], wherein the cutting blade and the holding means are used for both forward and backward operations.
[16] The cutting blade and the advancing and retracting means for moving the cutting blade forward and backward are provided at two locations on both sides in the longitudinal direction of the set portion,
The clip hole drilling method according to [15], wherein the connecting rod is pressed from both sides in the longitudinal direction by the both advancing and retracting means.
[17] The drill means can be moved forward and backward with respect to the set portion through a through hole provided in a side wall of the set portion.
The clip hole drilling method according to any one of [11] to [16], wherein the bottom surface of the through hole is an inclined surface that is inclined downward from the inside to the outside of the set portion.
[18] The clip hole drilling method according to any one of [11] to [17], wherein the drill attached to the drill means is the clip hole drill for drilling according to [1].
[19] The weather strip has a hollow cylindrical seal portion and an attachment portion to which the clip is attached,
The clip hole drilling method according to any one of [11] to [18], wherein an amount of protrusion of the drill into the set portion is smaller than a total thickness of the seal portion and the attachment portion.

  Since the drill for drilling a clip hole of the present invention is a kind of so-called peripheral edge drill, a clip hole of a predetermined size is clearly drilled as a drill for drilling as compared with a conventional central blade drill or heat melting. can do. The diameter of the clip hole can be easily designed according to the outer diameter of the drill. In addition, the drill for drilling a clip hole of the present invention has only one cutting edge, so that no punch hole remains on the drill side after drilling. Further, since the escape hole of the punch hole is not blocked during drilling, the punch hole does not remain in the clip hole after drilling. Therefore, if the clip hole is drilled by the drill for drilling a clip hole according to the present invention, the work of removing the punched hole after the drilling becomes unnecessary, and the productivity can be greatly improved. In addition, in the conventional center blade drill, in order to ensure a positive escape path of the drill hole, a spiral groove extending in the axial direction is essential on the outer peripheral surface of the drill body (so-called twist drill), In the drill for drilling clip holes of the present invention, the spiral groove is not always necessary.

  Further, in the clip hole punching apparatus and the clip punching method of the present invention, in the neutral state before the clip hole is punched, the drill means and the holding means are located outside the set part, so that the weather strip can be easily and smoothly moved into the set part. Can be set. And when setting the weather strip to the set part and drilling the clip hole, the holding means protrudes into the set part and presses and holds the weather strip so that the clip hole is crushed. And can be perforated.

  It is necessary to finally drill a plurality of clip holes along the longitudinal direction in the weather strip. Therefore, if a plurality of drilling means are arranged side by side along the longitudinal direction of the set portion, a plurality of clip holes can be drilled simultaneously, and productivity is improved.

  If the holding means is a plurality of holding pins arranged side by side corresponding to the drill means, the portion that pierces the clip hole is securely pressed and the other portions are not pressed, so the minimum pressing force is required. In other words, the running cost can be reduced as compared with the case where the weather strip is entirely pressed.

  If all the drilling means and the holding means are moved forward and backward at the same time, the production processing time can be shortened. In addition, since all of them advance and retreat at the same time, it is not necessary to individually control the advance and retreat of the individual drill means and holding means, so that the control is easy and it is possible to avoid the variation of each clip hole. .

  If the weatherstrip can be cut into the length of the final product simultaneously with the drilling of the clip holes by the cutting blade that cuts the weatherstrip, the process of separately cutting the weatherstrip into the length of the final product before or after drilling is performed. Productivity is improved because it can be omitted.

  If the advancing / retreating means is used for the advancing / retreating operation of the cutting blade and the holding means, there is no need to separately provide the advancing / retreating means for the cutting blade and the advancing / retreating means for the holding means. Cost can be reduced.

  When the cutting blade is provided on only one side in the longitudinal direction of the set part, in order to cut to the final length by the cutting blade, set with the other side in the longitudinal direction of the weatherstrip spare body properly positioned. It is necessary to set to the department. In this case, if the setting position of the weather strip preliminary body is slightly shifted, an error occurs in the final length of the weather strip. On the other hand, if the cutting blades are provided on both sides in the longitudinal direction of the set portion, the position for setting the weatherstrip spare body is not limited, so that no dimensional error occurs and the set operation can be performed easily.

  Moreover, since the connecting rod for connecting the holding means is long, if it is pressed only from one side in the longitudinal direction, the other side may be replaced and not smoothly advanced and retracted. On the other hand, if the connecting rod is pressed from both sides in the longitudinal direction by the advancing / retracting means, the movement of the connecting rod is stabilized, and the connecting portion can be smoothly advanced and retracted.

  If the drilling means can be moved forward and backward with respect to the set part through the through hole provided on the side wall of the set part, and the bottom surface of the through hole is an inclined surface, the drilling pit generated by the drilling can be smoothly carried out. It can be discharged outside the set section.

  If the drill attached to the drill means is the drill for drilling a clip hole as described in [1], a clean clip hole can be accurately drilled without the punch rod remaining on the weatherstrip or drill.

  When drilling a clip hole in an weather strip having a seal part and a mounting part, if the amount of protrusion into the set part of the drill is set to be smaller than the total thickness of the seal part and the mounting part, the hole is formed in the seal part. Can be avoided.

It is sectional drawing which shows the manufacturing process of a weather strip. It is a top view of the perforation apparatus in a neutral state. It is a side view of the perforation apparatus in a neutral state. It is the front view and side view of a drill. It is a top view of the perforation apparatus in an initial operation state. It is a sectional side view of the perforation apparatus in an initial operation state. It is a principal part enlarged view of the state of FIG. It is a top view of the perforation apparatus in the state where the weather strip was cut and held. It is a principal part expanded side sectional view of the perforation apparatus in the state by which the weather strip was cut | disconnected and hold | maintained. It is a top view of the punching apparatus in a punching state. It is a principal part expanded side sectional view of the punching apparatus in a punching state.

  First, a weather strip to be perforated will be described. The weather strip 100 is a long member disposed at the periphery of the door opening of an automobile, and as shown in FIG. 1, a hollow cylindrical hollow seal portion 101 and a flat mounting portion 102 are integrally formed. Have. Then, as shown in FIG. 1 (c), the clip 110 is attached to the mounting portion 102, and the clip 110 is fitted into the vehicle body 120 as shown in FIG. 1 (d). The weather strip 100 is made of rubber or elastomer, and after being extruded into a predetermined shape as shown in FIG. 1A, a clip hole for mounting the clip 110 as shown in FIG. 1B. It is manufactured through a process of punching 103 in the mounting portion 102. Further, in the weather strip 100 of the present embodiment, the mounting portion 102 is covered with the partition wall 104 in the hollow seal portion 101, so that the seal space S and the mounting space C for the clip 110 are separated. The hollow seal portion 101 and the partition wall 104 have the same thickness (1.3 mm in this embodiment). Moreover, the thickness of the attachment part 102 in this embodiment is 2.0 mm.

  Next, a punching device for punching clip holes in the weather strip will be described. As shown in FIGS. 2 and 3, the clip hole punching device (hereinafter simply referred to as a punching device) has a setting unit 10 for setting a weather strip on a base 1 and an electric motor for punching a clip hole in the weather strip. A drill 20 and a holding pin 30 for holding a weather strip set in the setting unit 10 are provided. 2 and 3 show a neutral state before the clip hole is drilled, and a weather strip preliminary body 100 ′ described later is set in the setting portion 10. The electric drill 20 corresponds to the drill means of the present invention, and the holding pin 30 corresponds to the holding means of the present invention.

  The set portion 10 is formed as a groove-like concave space extending in the longitudinal direction at the center in the width direction of the upper surface of a long metal cuboid, and receives and accommodates the weather strip (and the weather strip preliminary body 100 '). It is possible. Therefore, the length (longitudinal dimension) of the set part 10 is larger than the weather strip (and the weather strip preliminary body 100 '). On the other hand, the width dimension of the set part 10 is substantially the same as the width of the weather strip (and the weather strip preliminary body 100 ') in the natural state. Two cutouts 11 are formed on both side walls of the set portion 10. As a result, the weather strip 100 after drilling is easily grasped by hand at the notch 11 portion and taken out from the set portion 10.

  In the electric drill 20, a drill (drill bit) 22 for drilling is detachably attached to the tip of a commercially available drill driver 21. A plurality of electric drills 20 are arranged in parallel along the longitudinal direction of the set unit 10. The number of installed electric drills 20 is the same as the number of clip holes 103 drilled in the weather strip 100. Each electric drill 20 is installed on one base plate 23, and is driven by power supplied from a power source (not shown).

  The base plate 23 can slide on the two slide rails 24 provided at right angles to the longitudinal direction of the set unit 10 on the base 1 in a direction approaching and separating from the set unit 10. Thereby, all the electric drills 20 can move forward and backward simultaneously with respect to the set part 10. In the neutral state shown in FIGS. 1 and 2, each electric drill 20 is located outside the set unit 10. On the other hand, when the clip hole 103 is drilled in the weather strip 100, the base plate 23 slides in a direction approaching the set unit 10. Thereby, the drill 22 of each electric drill 20 enters the set part 10 through the through hole 12 provided on one side wall of the set part 10 (see FIGS. 10 and 11). The bottom surface of the through hole 12 is an inclined surface inclined downward from the inside to the outside of the set unit 10. The base plate 23 is slid by an air cylinder 2 fixed to the back surface of the base 1.

  Each electric drill 20 is installed on the base plate 23 via a bracket 25. Each bracket 25 is provided on a position adjustment rail 26 provided on the base plate 23 in parallel with the longitudinal direction of the set unit 10. Thereby, the left-right position of each electric drill 20 can be adjusted by sliding each bracket 25 on the position adjustment rail 26. Each bracket 25 is normally fixed to the position adjustment rail 26 with a screw 27, so that the electric drill 20 is not misaligned during drilling. When adjusting the left-right position of the electric drill 20, the screwing force of the screw 27 may be loosened.

  The drill 22 attached to the electric drill 20 is a special drill (drill bit) for drilling the clip hole 103 in the weather strip 100. Specifically, as shown in FIG. 4, one cutting edge 22 b is formed so as to protrude toward the distal end on the periphery of the distal end of the drill body 22 a. Reference numeral 22 c denotes a shank portion that is attached to the drill driver 21. As shown to Fig.4 (a), the cutting edge 22b is an isosceles triangle by front view, The both sides are a blade. Moreover, as shown in FIG.4 (b), the cutting edge 22b becomes thin gradually from the base end part to the front-end | tip. Thereby, the rigidity of the cutting edge 22b is secured at the base end portion, and a sharp sharpness is ensured at the distal end portion.

  The diameter of the drill main body 22a is the same as the diameter of the rotation locus of the cutting edge 22b. Therefore, the diameter of the clip hole 103 can be designed by the diameter of the drill body 22a. In the drill 22 of this embodiment, the diameter of the drill body 22a is 4.0 mm, and the protruding length of the cutting edge 22b is 5.5 mm. The distal end surface 22d of the drill body 22a is a tapered surface inclined toward the proximal end side. As a result, the escape path of the perforated trough during the perforating process is expanded, and the perforated trough can be discharged to the outside more smoothly.

  Further, the protruding length of the cutting edge 22b is preferably 1.5 to 4 times, more preferably 2 to 3 times the thickness of the mounting portion 102 of the weather strip 100. When the protruding length of the cutting edge 22b is less than 1.5 times the thickness of the mounting portion 102, the escape path of the punched hole becomes small, and the punched hole may not be smoothly discharged to the outside. On the other hand, as will be described later, since the clip hole 103 is perforated at the tip of the cutting edge 22b, when the protruding length of the cutting edge 22b exceeds four times the thickness of the mounting portion 102, the strength decreases. There is a high possibility that the cutting edge 22b is damaged during the selection.

  The holding pin 30 is provided on the opposite side of the electric drill 20 across the set unit 10 so as to be able to advance and retreat with respect to the set unit 10. A plurality of holding pins 30 are also arranged in parallel along the longitudinal direction of the set unit 10. The number of holding pins 30 is the number corresponding to the electric drill 20 and the same number as the clip holes 103 drilled in the weather strip 100. Each holding pin 30 is in a position facing each electric drill 20.

  Each holding pin 30 is composed of a bolt, and all the holding pins 30 are screwed and fixed to the connecting rod 31. As a result, all the holding pins 30 are connected to each other via the connecting rod 31 and move forward and backward simultaneously with respect to the set unit 10. The neutral position of the connecting rod 31 is defined by coil springs 32 provided around two bolts 33 that are screwed and fixed to the other side wall of the set portion 10. That is, the neutral position of the connecting rod 31 is a position where no urging force is generated in the coil spring 32, and is located away from the set portion 10 by the length of the coil spring 32. The bolt 33 is inserted into the connecting rod 31, and the connecting rod 31 moves forward and backward around the bolt 33.

  In this neutral position, each holding pin 30 is located outside the set unit 10. Specifically, the tip of each holding pin 30 (the nut screwed into the holding pin 30) is located in the through hole 13 provided in the other side wall of the set unit 10. In addition, in order to match the installation height of each electric drill 20 with the set unit 10 and the holding pin 30, the set unit 10 is installed on the pedestal 15. Reference numeral 35 denotes a stopper that restricts the movement limit of the connecting rod 31, and thus the amount of protrusion of each holding pin 30 connected to the connecting rod 30 into the set portion 10. The stoppers 35 are provided at two locations on both sides in the longitudinal direction of the set unit 10.

  A cutting blade 40 that cuts a weather strip 100 (more precisely, a weather strip preliminary body 100 ′ as will be described later) provided on the set portion 10 is provided on the outer side in the longitudinal direction of the connecting rod 31. Two cutting blades 40 are provided on both sides in the longitudinal direction of the set unit 10. The distance between the two cutting blades 40 is set to be the same as the length dimension of the weather strip 100 as the final product. Both cutting blades 40 are fixed to the air cylinder 42 via brackets 41, respectively. As a result, the cutting blade 40 can be moved back and forth with respect to the set portion 10 by the air cylinder 42. The air cylinder 42 corresponds to the advance / retreat means of the present invention.

  The air cylinder 42 is also installed on a pedestal 43 having the same height as the pedestal 15 in order to align the height position with the setting unit 10, the electric drill 20, the holding pin 30, and the like. A rail 44 is provided on the pedestal 43 to stabilize the forward and backward movement of the bracket 41 and the cutting blade 40. The lower part of the bracket 41 is slidably fitted to the rail 44. Reference numeral 45 is a pusher that is fixed to the bracket 41, moves forward and backward with the cutting blade 40, and presses the connecting rod 31.

  The base 1 may be horizontal or vertical, but is preferably inclined by 30 ° to 60 ° with respect to the horizontal. When the base 1 is made horizontal or vertical, it becomes difficult to put the weather strip 100 in and out of the set unit 10. Moreover, when the base 1 is vertical, the perforated ridges are not easily discharged to the outside.

  Next, a procedure (piercing method) for punching the clip hole 103 in the weather strip 100 will be described. First, as shown in FIGS. 1 and 2, in a neutral state of the perforating apparatus, a weather strip that has been extruded into a predetermined shape is set in the setting unit 10. In detail, the attachment part 102 which is a location which drills the clip hole 103 is set toward the electric drill 20 side. At this time, the weather strip preliminary body 100 ′ that has been preliminarily cut into a coarse length through extrusion molding may be set in the setting unit 10. Therefore, it is not necessary to cut exactly the length of the final product before drilling. Further, the positioning in the longitudinal direction in the set unit 10 does not need to be performed strictly.

  7 and 9 and the like, the bottom surface of the set portion 10 is formed in a shape corresponding to the outer shape of the weather strip 100 (and the weather strip preliminary body 100 '). As a result, the weatherstrip preliminary body 100 ′ can be stably set on the setting unit 10. When the drilled state is in the neutral state, the drill 22 and the holding pin 30 are located outside the set unit 10.

  When the weatherstrip preliminary body 100 'can be set in the setting unit 10, a start switch (not shown) is turned on to drive the perforating apparatus. Then, as shown in FIGS. 5 to 7, the bracket 41 projects and moves toward the set unit 10 by the air cylinder 42. Then, the left and right pushers 45 come into contact with both side portions of the connecting rod 31 in the longitudinal direction. At the same time, the cutting blade 40 comes into contact with the weather strip preliminary body 100 '.

  Subsequently, as shown in FIGS. 8 and 9, the cutting blade 40 protrudes into the set unit 10 when the bracket 41 further approaches the set unit 10. As a result, both sides in the longitudinal direction of the weather strip preliminary body 100 ′ are cut to form the weather strip 100 having the final product size.

  At the same time, the connecting rod 31 is pressed against the urging force of the coil spring 32 by the pusher 45, and all the holding pins 30 protrude into the set portion 10 at the same time. Accordingly, the periphery of the perforated portion of the weather strip 100 is held in a state of being crushed by the holding pins 30. In other words, other parts are not pressed. At this time, the projection limit of the holding pin 30 and the cutting blade 40 is regulated by the contact of the connecting rod 31 with the stopper 35. In addition, since the connecting rod 31 is pressed on both sides in the longitudinal direction at the same time, the connecting rod 31 and, in turn, the holding pins 30 project and move stably. In other words, the air cylinder 42 is used for both the advancing / retreating operation of the cutting blade 40 and the holding pin 30.

  Subsequently, as shown in FIGS. 10 and 11, the base plate 23 is moved to the set unit 10 side by the air cylinder 2. Thereby, all the electric drills 20 move to the set unit 10 side simultaneously, and each drill 22 protrudes into the set unit 10 while rotating through the through hole 12. Accordingly, the clip hole 103 is drilled in the weather strip 100 by the drill 22. At this time, the protrusion amount of the drill 22 into the set portion 10 is smaller than the total thickness of the seal portion 101 and the attachment portion 102. In this embodiment, since the thickness of the seal part 101 and the partition 104 is the same, it is smaller than the total thickness of the partition 104 and the attachment part 102. Accordingly, the drill 22 penetrates the attachment portion 102 but does not penetrate the partition wall 104. Thereby, while the clip hole 103 is reliably drilled in the attachment part 102, it can prevent that the seal | sticker part 101 is damaged.

  The punching hole D generated by drilling the clip hole 103 by the drill 22 is discharged toward the outside of the set unit 10 (the drill 22 side) because there is no escape space on the set unit 10 side. At this time, since the drill 22 has only one cutting blade 40, the escape path of the punch rod D is sufficiently secured, and the tip end surface 22d of the drill body 22a of the drill 22 is also an inclined surface. Thus, the punch rod D is smoothly discharged out of the set portion 10 through the through hole 12 without remaining in the weather strip 100 or the drill 22. At this time, since the bottom surface of the through-hole 12 is an inclined surface, the punched hole D is more smoothly discharged out of the set unit 10. Therefore, after the clip hole 103 is drilled, there is no need to remove the drill bar D from the weather strip 100 or the drill 22.

  The electric drill 20 and the holding pin 30 are automatically retracted to the neutral position by the air cylinders 2 and 42 after a predetermined time (about 0.1 to 1 second) has elapsed. Thereby, one cycle of the drilling operation of the clip hole 103 is completed. If the clip hole 103 can be drilled in the weather strip 100, the drilling device may be stopped, and the weather strip 100 may be grasped by hand through the notch 11 and taken out from the set unit 10. After that, the above cycle is repeated.

  As mentioned above, although typical embodiment of this invention was described, this invention is not limited to this, A various change is possible in the range which does not deviate from the summary of this invention. For example, a weather strip without the partition 104 can be applied. Even in this case, if the projecting amount of the drill 22 into the set portion 10 is set to be smaller than the total thickness of the seal portion 101 and the attachment portion 102, only the attachment portion 102 is formed without causing a hole in the seal portion 101. The clip hole 103 can be drilled. On the other hand, in the case of the weather strip 100 having the partition wall 104, if the amount of protrusion of the drill 22 into the set portion 10 is set smaller than the total thickness of the seal portion 101, the mounting portion 102, and the partition wall 104, the seal portion It can also be made larger than the total wall thickness of 101 and the mounting part 102.

  The cutting blade 40 is not necessarily provided. In this case, the weather strip previously cut to the final product dimensions may be set in the setting unit 10 or a separate cutting process may be provided after the perforating process. Moreover, the cutting blade 40 does not need to be provided in two places of the longitudinal direction both sides of the set part 10, and may be provided only in any one of a longitudinal direction. In this case, the other end in the longitudinal direction of the weatherstrip preliminary body 100 ′ needs to be properly positioned in the set portion 10.

  As a drill used in the drilling device of the present invention, there is a problem of removing the punching spear, but not only the special drill of the present invention but also a conventionally known drilling drill can be used. In the drill 22 of the present invention, it is also preferable that a spiral groove extending in the axial direction is formed in the drill body 22a. Thereby, the escape route of the perforated rod D is further secured.

  A plurality of power drills 20 and holding pins 30 are not necessarily provided side by side, and at least one power drill 20 and holding pins 30 may be provided. In this case, a plurality of clip holes may be sequentially drilled while moving the weather strip in the longitudinal direction. In this case, the base plate 23 and the connecting rod 31 are not necessary.

  The weather strip holding means is not limited to the holding pin 30 and may be a long member that presses and holds the weather strip as a whole.

  The connecting cylinder 31 and the air cylinder 42 for advancing and retracting the holding means are not necessarily provided in two places, and can be provided in one place in the longitudinal center of the connecting rod 31. Further, an air cylinder (advance / retreat means) for the cutting blade 40 and an air cylinder (advance / retreat means) for the holding means can be provided separately. Further, without using the base plate 23, each electric drill 20 can be advanced and retracted by an individual air cylinder.

  The bottom surface of the through hole 12 of the set unit 10 for discharging the perforated rod D to the outside does not necessarily have to be an inclined surface, and may be a horizontal surface.

DESCRIPTION OF SYMBOLS 1 Base 2 Air cylinder 10 set part 11 Notch 12 Through-hole 20 Electric drill 21 Drill driver 22 Drill 22a Drill main-body part 22b Cutting blade 23 Base plate 24 Slide rail 26 Position adjustment rail 30 Holding pin 31 Connecting rod 35 Stopper 40 Cutting blade 41 Bracket 42 Air cylinder 44 Rail 45 Pusher 100 Weather strip 100 'Weather strip spare body 101 Seal portion 102 Mounting portion 103 Clip hole 104 Bulkhead 110 Clip 120 Vehicle body D Drilling rod

Claims (19)

A drill used to be attached to the drill means when a drill hole is drilled by a drill means in a weather strip disposed via a clip on a peripheral edge of an automobile door opening,
A weatherstrip drilling hole drill having a cutting edge protruding from the periphery of the tip. A clip hole drilling device for drilling a clip hole in a weather strip disposed via a clip to the periphery of an automobile door opening,
A set section for setting the weather strip;
Drill means for drilling clip holes in the weatherstrip;
Holding means for holding the weather strip set in the set part;
With
The set portion is formed as a groove-like concave space that can receive and accommodate a weatherstrip,
The drill means is provided so as to be able to advance and retreat inside and outside the set portion,
The holding means is provided to be able to advance and retreat in and out of the set part at a position opposite to the drill means across the set part.
In the neutral state before drilling the clip hole, the drill means and the holding means are located outside the set part,
When the weather strip is set in the set portion and the clip hole is drilled, the holding means protrudes into the set portion and presses and holds the weather strip so that the clip hole is drilled by the drill means. A clip hole drilling device configured to be configured. A plurality of the drill means are juxtaposed along the longitudinal direction of the set part,
The clip hole punching device according to claim 2, wherein the holding means is a plurality of holding pins arranged in parallel corresponding to the drill means. Each of the drill means is provided on a single base plate that can advance and retreat with respect to the set portion, and all the drill means advance and retreat simultaneously,
The clip hole punching device according to claim 3, wherein the holding means are connected to each other by a connecting rod, and all the holding means are moved forward and backward simultaneously. Furthermore, it has a cutting blade for cutting the weather strip set in the set part,
The cutting blade is provided so as to be able to advance and retreat into and out of the set part,
In the set portion, a weather strip preliminary body that has been pre-cut to a rough length through extrusion molding is set, and when the clip hole is drilled, the weather strip preliminary body is adjusted to the length of the final product by the cutting blade. The clip hole punching device according to any one of claims 2 to 4, which is cut. The cutting blade is moved back and forth by advancing and retracting means,
When the advancing / retreating means causes the cutting blade to protrude into the set portion, the advancing / retreating means causes the cutting blade and the holding means to simultaneously protrude into the set portion by pressing the connecting rod by the advancing / retreating means. 6. The clip hole punching device according to claim 5, wherein the cutting blade and the holding means are used for both advancing and retracting operations. The cutting blade and the advancing / retracting means for moving the cutting blade forward and backward are provided at two locations on both sides in the longitudinal direction of the set portion,
The clip hole punching device according to claim 6, wherein the connecting rod is pressed from both sides in the longitudinal direction by the both advancing and retracting means. The drill means is capable of moving forward and backward with respect to the set part through a through hole provided in a side wall of the set part.
The clip hole punching device according to any one of claims 2 to 7, wherein a bottom surface of the through hole is an inclined surface inclined downward from the inside to the outside of the set portion.   The clip hole drilling device according to any one of claims 2 to 8, wherein the drill attached to the drill means is the clip hole drill for drilling according to claim 1. The weather strip has a hollow cylindrical seal portion and an attachment portion to which a clip is attached,
The clip hole punching device according to any one of claims 2 to 9, wherein a protruding amount of the drill into the set portion is smaller than a total thickness of the seal portion and the attachment portion. A clip hole drilling method for drilling a clip hole in a weather strip disposed via a clip on a peripheral edge of an automobile door opening,
Drill means for punching a clip hole in the weather strip across a set portion formed as a groove-like concave space capable of receiving and accommodating the weather strip, and holding means for holding the weather strip set in the set portion , Facing each other,
In the neutral state before drilling the clip hole, the drill means and the holding means are located outside the set part,
When the weather strip is set in the set portion and the clip hole is drilled, the holding means protrudes into the set portion and presses and holds the weather strip so that the clip hole is drilled by the drill means. , Clip hole drilling method. A plurality of the drill means are juxtaposed along the longitudinal direction of the weather strip,
The clip hole drilling method according to claim 11, wherein the holding means is a plurality of holding pins arranged in parallel corresponding to the drill means. Each of the drill means is provided on a single base plate that can be advanced and retracted with respect to the set part, and all the drill means advance and retract simultaneously with respect to the set part,
The clip hole punching method according to claim 12, wherein the holding means are connected to each other by a connecting rod, and all the holding means are moved forward and backward simultaneously with respect to the set portion. Furthermore, in order to cut the weather strip set in the set part, a cutting blade capable of moving back and forth inside and outside the set part is provided,
In the set portion, a weather strip preliminary body that has been pre-cut to a rough length through extrusion molding is set, and when the clip hole is drilled, the weather strip preliminary body is adjusted to the length of the final product by the cutting blade. The clip hole drilling method according to any one of claims 11 to 13, wherein cutting is performed. The cutting blade is moved forward and backward by advancing and retracting means,
The holding member is constantly urged toward the outside of the set part by a spring,
When the cutting blade is protruded into the set part by the advance / retreat means, the advancement / retraction means is arranged so that the connecting blade is pressed by the advance / retreat means so that the cutting blade and the holding means protrude into the set part at the same time. The clip hole drilling method according to claim 14, wherein the cutting blade and the holding means are used for both advancing and retracting operations. The cutting blade and the advancing / retreating means for advancing and retracting the cutting blade are provided at two locations on both sides in the longitudinal direction of the set portion,
The clip hole drilling method according to claim 15, wherein the connecting rod is pressed from both sides in the longitudinal direction by the both-way advance / retreat means. The drill means can be moved forward and backward with respect to the set part through a through hole provided in a side wall of the set part,
The clip hole drilling method according to any one of claims 11 to 16, wherein a bottom surface of the through hole is an inclined surface inclined downward from the inside to the outside of the set portion.   The clip hole drilling method according to any one of claims 11 to 17, wherein the drill attached to the drill means is the clip hole drill for drilling according to claim 1. The weather strip has a hollow cylindrical seal portion and an attachment portion to which a clip is attached,
The clip hole drilling method according to any one of claims 11 to 18, wherein a protruding amount of the drill into the set portion is smaller than a total thickness of the seal portion and the attachment portion.

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