JP3497219B2 - Molding material cutting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting a molding material. 2. Description of the Related Art Conventionally, a molding material made of an extruded product of a synthetic resin has been used in a front window of an automobile for mounting a window glass on a vehicle body and concealing a gap between the two. By the way, in such a molding material for automobiles, a portion attached to both sides of the front window has a garter portion in order to prevent water droplets generated by the wiper during rainy weather from scattering on window glasses on both sides of the vehicle body. In the upper part, a material without a gutter is used so that water droplets on the glass surface are easily discharged to the outside. Various processing methods have been conventionally proposed as a processing method for obtaining a molding material having a partially changed shape due to the presence or absence of a gutter portion as described above. For example, there is a method in which an extruded product continuously manufactured to have the same cross-sectional shape is partially cut out in a later step to process it into a predetermined shape. The method is shown in FIG. In this method, as shown, an extruded product 60 having the same cross-sectional shape continuously
Is set on the fixing jig 61 first. Above the fixing jig 61, the garter portion 63 of the extruded product 60 is provided.
The cutter blade 62 which moves up and down with respect to is arrange | positioned. Then, by lowering the cutter blade 62 at a predetermined position of the extruded product 60 and pressing the garter portion 63,
The garter portion 63 is partially cut off. Reference numeral 64 denotes a cylinder device for operating the cutter blade 62 up and down. However, in this method, there is a problem that vertical stripes are generated on the cut surface 65 of the garter section 63 due to the vertical movement of the cutter blade 62. In addition, since the root of the garter portion 63 to be cut is held apart from the end of the fixing jig 61, the molding material is elastically deformed at the time of pressing by the cutter blade 62, and the cut surface is displaced. As a result, as shown in FIG. 9, the obtained cut surface 65 becomes blistered, which causes poor appearance and poor dimensional accuracy. Therefore, the cut surface 65 is thereafter smoothed by high-frequency processing. It was hard to say that the process was complicated and efficient. In order to solve this problem, it is preferable to provide a fixing jig 61 directly below the cutter blade 62 to securely hold and fix the garter portion 63 to be cut. The cutting edge 62 hits the fixing jig 61 and the cutter blade 62 is damaged earlier. Furthermore, in this method, the cutting edge of the cutter blade 62 and the fixing jig 61 sandwich the garter portion 63 so as to be cut off, so that the shearing between the cutter blade 62 and the fixing jig 61 is smaller than the method shown in FIG. There is a possibility that the force is not easily generated and the gutter portion 63 cannot be completely cut. SUMMARY OF THE INVENTION The present invention has been proposed in view of the above problems, and is intended to provide a molding material in which the shape of a garter portion is partially changed with good appearance and simple appearance. It seeks to provide a device for obtaining. [0007] That is, in the molding material cutting device of the present invention, a garter portion is integrally formed on the upper surface of the molding body, and an upper fin is formed on the opposite side of the garter portion. A cutting device for partially cutting the garter portion of the molded material, wherein a machine base,
A mounting portion provided with a fixing groove for holding a molding material having a predetermined length and provided on a table surface of the machine base; and a mounting portion for defining a cutout shape of a gutter portion of the molding material. And a guide rail provided in the longitudinal direction of the molding material placed on the placing portion, and a pressing roll that presses the molding material placed on the placing portion and fits into the fixing groove. A travel holding portion that travels along the mounting portion, and a blade portion that cuts off a gutter portion of the molding material fitted into the fixing groove of the mounting portion, the molding material along the guide rail. A traveling cutter that travels in the longitudinal direction and that can move up and down along the shape of the guide rail, and the guide rail lifts the traveling cutter when the traveling cutter travels. To move the blade portion up and down between the upper position of the molding material fitted in the fixing groove of the placing portion and the root position of the gutter portion of the molding material, the highest portion having the highest height. It has a shape having a lowest portion having the lowest lowest portion and an inclined portion formed by an inclined surface connecting the highest portion and the lowest portion, and the cylindrical surface of the press roll of the traveling press portion has the following configuration. A pressing surface that presses the placed molding material to fit into the fixing groove and that sandwiches the upper fin between the mounting portion and the mounting portion without pressing the gutter portion by the pressing roll. A gutter part escape groove formed to protrude upward. The present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing an example of a molding material cut by the molding material cutting device of the present invention, FIG. 2 is a front view showing an example of the present invention device, and FIG.
FIG. FIGS. 4 to 7 show the operation of the apparatus of the present invention. FIG. 4 is a front view showing a state where the traveling cutter is located at the highest part of the guide rail, and FIG. FIG. 6 is a front view showing a state where the molding material is set in the groove, FIG. 6 is a front view showing a state where the traveling cutter is located at the lowest part of the guide rail, and FIG. As shown in FIG. 1, a molding material 50 cut by the molding material cutting device of the present invention is configured such that a part of a garter portion 53 integrally formed on the upper surface of a molding body 51 is directed outward. Slowly changing excisions 52, 52 are formed at both ends so as to expand and are cut and removed. Further, an upper fin (reference numeral 56 shown in FIGS. 3 and 7) is provided on the opposite side of the gutter portion 53. In this molding material 50, the cut surface 54 of the garter 53
Is very beautiful with no vertical streaks or uncut parts due to the vertical movement of the cutter blade. As shown in FIGS. 2 and 3, the molding material cutting device of the present invention comprises a machine base 10 and a mounting portion 2.
The molding member 50 includes a guide rail 30, a travel holding section 35, and a travel cutter 40. The molding material 50 fitted in the fixing groove 21 of the placing section 20 is cut and removed into a predetermined shape by the travel cutter 40. The machine base 10 has a table surface 11 formed to have a length on which the molding material 50 can be placed.
The table surface 11 is provided with a mounting portion 20 for holding a molding material 50 having a predetermined length to be processed. Reference numeral 18 denotes a terminal positioning stopper for the molding material provided at the rear end of the guide rail 30 on the table surface 11. The mounting portion 20 is for securely holding the molding material 50 having a predetermined length and performing a high-precision cutting process. The fixing groove 21 for fitting the main body 51 and the leg portion 55 of the molding material 50 is provided. Is provided. As can be understood from the drawing, the fixing groove 21 is provided obliquely with respect to the mounting portion 20, and the cut surface 54 of the gutter portion 53 is provided.
The molding material 50 is held obliquely so as to be horizontal to the blade portion 42 of the traveling cutter 40 described later. The fitting of the molding material 50 into the fixing groove 21 is performed by a travel holding portion 35 described later. On the table surface 11, the placing section 2 is provided.
Guide rails 30, 30 are provided in parallel with 0. As shown in FIGS. 2 and 3, the guide rails 30 have a length corresponding to the length of the molding material to be machined, and are provided in parallel with the fixing groove 21 of the mounting portion 20 described above. . The guide rails 30, 30 are used to define the cut shape of the garter portion 53 of the molding material 50, and each of the guide rails 30, 30 has a highest highest portion 31, an inclined portion 32 having an inclined surface, and a lowest lowest portion. 33 are provided. The uppermost portion 31, the inclined portion 32, and the lowermost portion 33 are formed by the blade portion 4 of the traveling cutter 40 traveling on the guide rail 30.
The height position 2 is changed, and the garter portion 53 of the molding material 50 is cut off according to the height. That is, the highest part 31 of the guide rail is
The blade part 42 of the traveling cutter 40 is held at a position above the molding material placed on the placement part 20 at a height position that does not contact the garter part 53. The inclined portion 32 is formed by connecting the uppermost portion 31 and the lowermost portion 33 by an inclined surface, and corresponds to the gradually changing excision portion 52 of the molding material. Further, the lowest part 33 is made of the molding material 5.
A height position at which the cutting part 42 of the traveling cutter 40 travels along the root of the gutter part 53 of the molding material placed on the placing part 20 for completely cutting and removing the gutter part 53 from 0. Is configured. In this embodiment, the lowest portion 33 is provided between the two inclined portions 32, 32, as shown in FIG.
The gutter part 53 of the seventh forms the gradually changing resection parts 52, 52 and is suitably used for the molding material 50 cut and removed. Before the traveling cutter 40 cuts the garter portion 53 of the molding material 50 by the traveling cutter 40, the traveling pressing portion 35 automatically and securely fits the molding material 50 into the fixing groove 21 of the mounting portion 20. It is for efficiently cutting off the molding material and has a holding roll 36. The traveling holding section 35 is attached to a rail member 34 provided above the guide rail 30 and is advanced by the driving section 44 on the placing section 20 in the longitudinal direction of the molding member 50. fall back. In addition,
The traveling holding portion 35 is provided obliquely corresponding to the fixing groove 21 in order to securely fit a molding material into the fixing groove 21. Reference numeral 49 denotes the traveling holding unit 3
5 is a cylinder device for causing the mounting unit 5 to approach and separate from the placement unit 20 described above. The pressing roll 36 travels along the mounting section 20, presses the molding material 50 mounted on the mounting section 20, and fits the main body 51 and the leg 55 into the fixing groove 21. The cylindrical surface is provided with a pressing surface 37 and a gutter escape groove 38. The pressing surface 37 presses the molding material 50 from the upper surface to fit the main body 51 and the leg 55 into the fixing groove 21, and sandwiches the upper fin 56 between the mounting portion 20 and the cut surface, and The vicinity of the root of the gutter part 53 of the molding material is made flat. Also, the gutter escape groove 38 is
When the molding material 50 is fitted into the fixing groove 21, the garter portion 53 is not pressed by the pressing roll 36, but projects upward from the mounting portion 20. Thereby, the gutter part 53 can be cut and removed with high accuracy by the traveling cutter 40 described later. The traveling cutter 40 is mounted on the guide rail 30.
A predetermined position of the garter portion 53 of the molding material 50 is cut off while traveling along the guide rail 3.
Roller members 41, 41 that roll on the upper side, and a blade part 42 that cuts off the garter part 53 of the molding material 50 placed on the placement part 20. The blade part 42 is suspended horizontally above the mounting part 20, moves up and down along the shape of the guide rail 30 when the traveling cutter 40 travels, and the garter part 53 on the upper surface of the molding material 50.
At a predetermined position. The traveling cutter 40 is driven by a driving unit common to a driving unit 44 for moving the traveling holding unit 35, and the guide rail 3 is located immediately behind the traveling holding unit 35.
Travel back and forth along 0. The traveling cutter 40 is provided to be vertically movable by a cylinder device 46 attached to the driving unit 44. Next, a method of cutting and removing the garter portion 53 of the molding material 50 by the above-described apparatus 10 will be described. First, as shown in FIG.
0 and the travel holding portion 35 are arranged at one end of the guide rail 30, and the cylinder devices 46 and 49 are operated to lift the blade portion 42 and the holding roll 36 above the mounting portion 20. Then, the molding material 50 is arranged on the placing portion 20, and the terminal is inserted into the fixing groove 21 of the placing portion 20. Reference numeral 22 denotes a molding material end holding cylinder. Subsequently, as shown in FIG. 5, the press roll 36 of the traveling press section 35 is lowered by the cylinder device 49, and the molding material 5 on the mounting section 20 is lowered.
0 is pressed and fitted into the fixing groove 21. Then, the traveling cutter 40 is arranged at the operation start position on the guide rail 30 and is pressed against the rail by the cylinder device 46. Next, the operation of the driving unit 44 causes the traveling holding unit 35 and the traveling cutter 40 to travel along the mounting unit 20. The traveling holding portion 35 travels immediately before the traveling cutter 40 and continuously fits the molding material 50 on the mounting portion 20 into the fixed groove 21 in advance. At that time, the slack and kinks of the molding material are fed forward by the pressing roll 36 to keep the cut surface of the garter 53 flat. On the other hand, the traveling cutter 40 is
It travels along the guide rail 30 on the molding material 50 fitted in 1 in the longitudinal direction of the molding material (50). While the traveling cutter 40 is traveling on the highest part 31 of the guide rail 30, as shown in FIG. 3, the blade part 42 is located above the molding material 50, and the gutter part 53 remains without being cut off. The traveling cutter 40 is connected to the guide rail 3.
When the cylinder device 46 reaches the inclined portion 32 of zero, the traveling cutter 40 descends along the shape of the inclined portion 32 and the molding material 50 fitted in the fixing groove 21.
Is gradually cut from above. Subsequently, as shown in FIG.
The cylinder device 46 bends and stretches according to the shape of, and the traveling cutter 40 reaches the lowermost portion 33 of the guide rail 30.
As a result, as shown in FIG. 7, the blade portion 42 of the traveling cutter is moved to the upper surface portion of the fin 56 of the molding material 50 placed on the placement portion 20, that is, the garter portion 53.
Will be located at the base. And the traveling cutter 40
Travels on the lowest part 33 of the guide rail, and the gutter part 53 of the molding material is completely and beautifully cut off from the base. In this way, by further moving the traveling cutter 40 along the guide rail 30 to the other end of the molding material, the garter portion 53 of the molding material 50 is cut into a predetermined shape. After the machining, the cylinder devices 46 and 49 are operated, and the travel holding unit 3
5 and the traveling cutter 40 are lifted upward to take out the product from the fixing groove 21. In addition, the cutting shape of the molding material can be variously changed depending on the shape of the guide rail 30. Further, the molding material cutting device of the present invention is not limited to cutting the gutter portion of the molding material, and can be used for cutting other parts of the molding material. As shown and described above, according to the molding material cutting device of the present invention, the molding cutter is caused to travel along the guide rail that defines the molding shape of the molding material. The material can be cut into the desired shape. At that time, the molding material is moved by the traveling holding part that travels in front of the traveling cutter,
It is continuously and automatically fitted into the fixing groove. Therefore, the cutting of the molding material can be easily and reliably performed. Also, since the apparatus of the present invention does not cut by the vertical movement of the blade as in the conventional press cut, no vertical stripes are generated on the cut surface, and the cut surface of the molding material is extremely smooth and beautiful. Yes, a highly accurate product can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an example of a molding material cut by a molding material cutting device of the present invention. FIG. 2 is a front view showing an example of the device of the present invention. FIG. 3 is a view as seen in the direction of arrow 3; FIG. 4 is a front view showing a state in which a traveling cutter is located at the highest part of a guide rail. FIG. 5 is a front view showing a state where a molding material is set in a fixing groove in FIG. 4; FIG. 6 is a front view showing a state in which the traveling cutter is located at the lowest part of the guide rail. FIG. 7 is a view taken in the direction of arrow 7; FIG. 8 is a cross-sectional view of a main part showing an example of a method of processing a molding material having a partially changed shape. FIG. 9 is a sectional view showing an example of the obtained molding material. DESCRIPTION OF SYMBOLS 10 Machine stand 11 Table surface 20 Placement section 21 Fixing groove 30 Guide rail 31 Highest part of guide rail 32 Slope part of guide rail 33 Minimum part of guide rail 35 Travel holding part 36 Holding roll 40 Travel cutter 42 Blade part 50 molding material

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-195033 (JP, A) JP-A-61-228910 (JP, A) JP-A-48-9379 (JP, A) 57394 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B26D 1/04 B26D 7/02

Claims (1)

(57) [Claim 1] A garter portion (53) is integrally formed on the upper surface of a molding body (51), and the garter portion (5) is formed.
3) A cutting device for partially cutting the garter portion (53) of the molding material (50) having an upper fin piece (56) formed on the opposite side to the machine base (10); A fixing groove (21) for holding a molding material (50) is formed on the table surface (1) of the machine.
1) The mounting portion (20) provided in (1), and the mounting portion (20) is parallel to the mounting portion (20) for defining the cut shape of the garter portion (53) of the molding material (50), and the mounting portion (20). Guide rails (3) provided in the length direction of the molding material (50) placed on the portion (20).
0), and the molding material (5) placed on the placing section (20).
0) and a travel holding portion (35) having a holding roll (36) that fits in the fixing groove (21) and travels along the placing portion (20), and fixing of the placing portion (20). A cutting tool (42) for cutting off a gutter (53) of the molding material (50) fitted in the groove (21) is provided along the guide rail (30) in the length direction of the molding material (50). A traveling cutter (40) capable of moving up and down along the shape of the guide rail (30), and the guide rail (30) is provided with the traveling cutter (40).
The traveling cutter (40) is moved up and down at the time of traveling to move the blade part (42) into the fixing groove (2) of the mounting part (20).
In order to move up and down between the upper position of the molding material (50) fitted in 1) and the root position of the garter part (53) of the molding material (50), the highest part (31) having the highest height and the height The traveling holding part (35) has a shape including a lowest part (33) having the lowest height and an inclined part (32) composed of an inclined surface connecting the highest part (31) and the lowest part (33). On the cylindrical surface of the holding roll (36), the molding material (50) mounted on the mounting portion (20) is pressed to fit into the fixing groove (21), and the mounting member (20) Between the upper fins (5
6) A holding surface (37) for sandwiching the gutter part (53)
A garter escape groove (38) for projecting the upper part of the mounting part (20) without being pressed by the holding roll (36).