JP2014237165A - Mold cleaning device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold cleaning device and a method for cleaning capable of cleaning adherence, especially sticky adherence, adhered over a relatively wide range, such as inner and outer sides of a V-shaped groove shoulder part of a mold, and capable of being used continuously without replacement even when the width of the V-shaped groove of the mold changes, in a bending processing device.SOLUTION: Provided is a mold cleaning device 9 in a bending processing device 1 for bending and processing a workpiece W by a mold formed of a punch P and a die D. A rotation direction of a brush 20 forming the mold cleaning device 9 is a direction orthogonal to a longitudinal direction of the mold (X axis direction in Fig. 1) and a shape of the brush 20 is a truncated cone shape, and the brush 20 is formed by cutting its whole body into a truncated cone shape.

Description

  The present invention relates to a mold cleaning apparatus in a bending apparatus and a mold cleaning method using the mold cleaning apparatus.

  On April 22, 2006, the patent applicant of the present application filed a patent application for an invention related to a mold cleaning device in a bending apparatus (Japanese Patent Laid-Open No. 2007-289978).

  According to the present invention, conventionally, it is necessary for an operator to determine whether or not a mold should be cleaned by using a mold cleaning device. Therefore, it is extremely complicated for the operator and the cleaning efficiency is lowered. In view of this, it was made ([0006] of the above-mentioned gazette specification), and the mold cleaning device is automatically used by using the workpiece material information (FIG. 8 of the gazette), mold information, and mold layout information. Thus, the operation and effect of providing a bending device that improves the cleaning efficiency of the mold is achieved by operating in an automatic manner ([0006] of the same publication).

JP 2007-289978 A

  In the mold cleaning device disclosed in Patent Document 1, the brush 40 has a shape in which tops are placed side by side as shown in FIG.

  And the rotating shaft 41 of the said brush 40 is arrange | positioned in the direction orthogonal to the longitudinal direction (X-axis direction (FIG. 11 (B))) of the metal mold | die which is the die | dye D.

  With this configuration, conventionally, the brush 40 is moved in parallel (for example, the arrow A in FIG. 11B) while rotating in parallel to the longitudinal direction (X-axis direction) of the mold (for example, An arrow B in FIG.

  In this case, the relationship between the brush 40 and the V groove 25 of the mold is that the brush 40 is completely inserted into the V groove 25 as shown in FIG. The outer and inner sides of the V-groove shoulders 23 and 24 are also in contact.

  Of these, as shown in FIG. 12B, the brush portions a and b that contact the outside and inside of the shoulder portions 23 and 24 are extremely small compared to the entire brush, and the outside 23A of the shoulder portion 23 is also small. And the inner side 23B and the outer side 24A and the inner side 24B of the shoulder 24 are opened obliquely without being orthogonal to each other.

  Therefore, it is clear that the degree of contact of the brush portions a and b with the shoulder portions 23 and 24 is extremely low.

  However, as shown in the upper diagram of FIG. 10 of the present application, generally, when the degree of progress of bending of the workpiece W increases, the workpiece W moves from the outside of the shoulder portions 23 and 24 so as to move from the broken line position to the solid line position. Pull inside.

  Therefore, when the workpiece W is formed of a surface-treated steel plate (for example, a plated steel plate), zinc Zn adheres to both the outside and the inside of the shoulder portions 23 and 24 as shown in the lower diagram of FIG. .

  However, as described above, the degree of contact of the conventional brush 40 with the V groove shoulders 23 and 24 is extremely low (FIG. 12B).

  Therefore, as shown in the lower diagram of FIG. 10, it is often difficult to remove zinc Zn adhering to both the outside and inside of the mold shoulders 23, 24.

  In particular, in addition to zinc Zn, it is even more difficult to remove in the case of a scraped work piece, an adhesive deposit (a deposit of a workpiece covered with vinyl), or the like.

  On the other hand, as described above (FIG. 11), the conventional brush 40 has such a shape that the top is arranged horizontally, so that the size (thickness) in the front-rear direction (Y-axis direction) is fixed. Has been.

  Therefore, when the width of the V-groove 25 (Y-axis direction) of the mold changes, it is necessary to replace the brush 40 with a brush that matches the width of the V-groove 25, which requires extra time. And the exchange operation is troublesome.

  An object of the present invention is to enable the cleaning of deposits attached to a relatively wide range such as the outside and inside of the V-groove shoulder of the mold, in particular, adhesive deposits in a bending apparatus, and the mold V-groove. A mold cleaning device that can be used as it is without being replaced even if the width of the mold changes and a cleaning method therefor are provided.

In order to solve the above problems, the present invention is an independent claim, as described in claim 1,
In a mold cleaning apparatus 9 (FIG. 1) in a bending apparatus 1 for bending a workpiece W by a mold composed of a punch P and a die D,
The mold cleaning apparatus 9 is characterized in that the rotation direction of the brush 20 constituting the mold cleaning apparatus 9 is orthogonal to the longitudinal direction of the mold (X-axis direction in FIG. 1). As described in claims 2 and 3, the shape of the brush 2 is a truncated cone. The mold cleaning device 9 according to claim 1 and the brush 20 are implanted on a side surface of a cylindrical rotating shaft 21. The mold cleaning device 9 according to claim 2, wherein the whole is cut into a truncated cone shape.
Furthermore, as described in claim 4, which is an independent claim,
A mold cleaning method using the mold cleaning device 9 according to claim 1,
(1) After arranging the brush 20 parallel to the V-groove shoulders 23, 24 of the mold,
(2) The brush 20 is lowered to contact the V-groove shoulders 23, 24,
(3) Thereafter, the brush 20 is moved in the longitudinal direction of the mold while being rotated in a state where the brush 20 is in contact with the V-groove shoulder portions 23, 24, and a dependent claim. As described in certain claims 5-8,
In the above (1), the bus K closest to the V-groove bottom 26 of the die among the buses of the truncated cone forming the brush 20 is arranged in parallel to the V-groove shoulders 23, 24. 4 and the above (2), when the brush 20 is brought into contact with the V-groove shoulders 23 and 24 of the mold, the large-diameter portion 27 of the truncated cone forming the brush 20 is The mold cleaning method according to claim 4, wherein a small-diameter portion 28 of a truncated cone forming the brush 20 is in contact with the inside of the V-groove shoulder portions 23 and 24, respectively, outside the V-groove shoulder portions 23 and 24. The diameter portion between the large-diameter portion 27 and the small-diameter portion 28 of the truncated cone forming the brush 20 is in continuous contact from the outside to the inside of the V-groove shoulder portions 23, 24. In the mold cleaning method and the above (3), the brush 20 is reciprocated along the longitudinal direction of the mold, and the forward path , After rotated forward or reverse the brush 20, the return path takes the following technical means of the mold cleaning method according to claim 4, wherein the reverse or forward the brush 20.

  According to the configuration of the present invention, the rotation direction (arrow A in FIG. 3) of the brush 20 of the mold cleaning device 9 (FIG. 1) according to the present invention is relative to the longitudinal direction (X-axis direction) of the mold D. In addition, the shape of the brush 20 is a truncated cone shape (FIG. 5) and the whole is trimmed into a truncated cone shape (FIG. 6), and the mold cleaning device 9 having such a brush 20 is used. (1) First, after arranging the brush 20 in parallel with the V-groove shoulders 23 and 24 of the mold D (FIG. 9A), (2) lowering the brush 20 (FIG. 9 (B)) and contact with the V-groove shoulders 23, 24. (3) Then, while rotating the brush 20 in contact with the V-groove shoulders 23, 24 (FIG. 9D) ( When the arrow A in FIG. 9D is moved along the longitudinal direction of the mold D (arrow B in FIG. 9D), the brush 20 is placed on the shoulder of the V groove of the mold D At the moment of contact with the portions 23 and 24 (FIG. 9B), the large-diameter portion 27 and the small-diameter portion 28 of the brush 20 are in contact with the outside and inside of the V-groove shoulder portions 23 and 24, respectively (FIG. 9). (C)) Since the diameter portion between the large diameter portion 27 and the small diameter portion 28 is continuously in contact from the outside to the inside of the V groove shoulder portions 23, 24, the brush 20 is in contact with the V groove shoulder portions 23, 24. The contact area at the moment of contact with the reference numeral is as indicated by reference numerals q1 and q2 shown in FIG. 9C, and the brush 20 having the contact areas q1 and q is rotated as described above (FIG. 9D). 9B. As shown in FIG. 9E, outer and inner contact areas Q1 and Q2 and Q3 and Q4 with respect to the V-groove shoulders 23 and 24 of the brush 20 are obtained. (FIG. 1), the ratio of the outside and inside of the V-groove shoulders 23, 24 of the mold D (FIG. 9E). A mold cleaning device that enables cleaning of deposits that adhere to a relatively wide area, particularly sticky deposits, and that can be used without replacement even if the width of the mold V-groove 25 changes, and its A cleaning method can be provided.

  Therefore, according to the present invention, in the bending apparatus, it is possible to clean deposits, particularly sticky deposits, which adhere to a relatively wide range such as the outside and inside of the V-groove shoulder of the mold. Provided is a mold cleaning device and a cleaning method therefor, which can be used continuously without being exchanged even if the width of a V-groove changes.

1 is an overall configuration diagram of the present invention. It is a block diagram of the metal mold | die cleaning apparatus 9 which concerns on this invention. It is a figure which shows the rotation direction and movement direction of the brush 20 by this invention. It is detail drawing of the truncated cone which shows the shape of the brush 20 by this invention. It is a figure which shows the shape of the brush 20 by this invention. It is a figure which shows the relationship between the brush 20 and the rotating shaft 21 by this invention. It is a figure which shows the contact state of the brush 20 by this invention, and the V-groove shoulder parts 23 and 24 of the metal mold | die D. FIG. It is a figure which shows the relationship between the rotation direction of the brush 20 by this invention, and the cleaning direction of the V-groove shoulder parts 23 and 24 of the metal mold | die D. FIG. It is operation | movement explanatory drawing of this invention. FIG. 5 is a diagram showing a general relationship between the degree of progress of bending work W and the deposits on the V-groove shoulders 23 and 24 of the mold D; It is explanatory drawing of a prior art. It is conventional subject explanatory drawing.

The present invention will now be described by way of example with reference to the accompanying drawings.
FIG. 1 is an overall configuration diagram of the present invention, and a bending apparatus 1 illustrated is, for example, a descending press brake.

  This press brake has side plates 16 and 17 on both sides of the machine main body. On the upper side of the side plates 16 and 17, for example, hydraulic cylinders 14 and 15 which are ram driving sources are provided. The upper table 12 moves up and down, and a punch P, which is one mold, is mounted on the upper table 12 via a punch holder 30.

  In addition, a lower table 13 is disposed below the side plates 16 and 17, and a die D that is the other mold is mounted on the lower table 13 via a die holder 31.

  With this configuration, for example, when an operator places the work W against the abutments 10 and 11 of the back gauge device disposed behind the lower table 13 and positions the work W, the hydraulic cylinder 14 is turned on by turning on the foot pedal 7. , 15 is lowered to lower the upper table 12 as a ram, the workpiece W is bent by the cooperation of the punch P and the die D.

  On the sides of the upper table 12 and the lower table 13, as shown in the figure, mold storage units 2 and 3 and mold exchanging devices 2A and 3A are installed (for example, disclosed in WO00 / 41824). The mold changers 2A and 3A are movable in the left-right direction (X-axis direction), and the molds P and D can be exchanged between the mold storage units 2 and 3 and the upper table 12 and the lower table 13.

  At least one of the mold exchanging apparatuses 2A and 3A, for example, a mold exchanging apparatus 3A for a die arranged on the right side, is provided with a mold cleaning apparatus 9 which will be described later.

  As shown in FIG. 2 as viewed from the front of the machine body, the mold cleaning device 9 has a brush 20 that can be rotated by a motor 22 (for example, an air motor). It is mounted (FIGS. 3 to 4 of Patent Document 1).

  With this configuration, the brush 20 of the mold cleaning device 9 (FIG. 2) can be moved toward and away from the mold D. As will be described later (FIG. 9A), the V groove of the mold D is used. After being arranged in parallel with the shoulders 23 and 24, it is lowered and brought into contact with the V-groove shoulders 23 and 24 (FIG. 9B), and then the brush 20 (FIG. 9D) is placed into the V-groove. While rotating in the direction perpendicular to the longitudinal direction (X-axis direction) of the mold D in a state of being in contact with the shoulder portions 23 and 24 (arrow A), the mold D is moved in parallel with the longitudinal direction (arrow B).

  Thus, according to the present invention, the shape of the brush 20 according to the present invention is a truncated cone (FIGS. 4 to 7), and the brush 20 has V-groove shoulders 23, 24 of the mold D. The degree of contact with the outside and inside of the box became extremely strong.

  For this reason, according to the present invention, as shown in FIG. 9 (E), the contact region has a length proportional to the moving distance of the brush 20 (FIG. 9 (D)), and the V groove shoulder of the brush 20 Outer and inner contact areas Q1 and Q2 and Q3 and Q4 with respect to the portions 23 and 24 are obtained. Therefore, in the bending apparatus 1 (FIG. 1), the V-groove shoulder 23 of the mold D (FIG. 9E). , 24 can be cleaned of deposits, particularly sticky deposits, which are attached to a relatively wide area such as outside and inside.

  Furthermore, according to the present invention, since the brush 20 is formed of a truncated cone (FIGS. 4 to 7), the brush 20 of the present invention has a large diameter portion 27 (FIG. 9B) to a small diameter portion 28. Therefore, even if the width of the mold V-groove 25 is changed, it can be continuously used without being replaced.

  As described above, the rotation direction of the brush 20 according to the present invention is orthogonal to the longitudinal direction (X-axis direction) of the mold D as shown in FIG. Arrow A), while maintaining this rotational direction, the brush 20 is moved in the longitudinal direction in contact with the V-groove shoulders 23 and 24 (arrow B).

  On the other hand, the shape of the brush 20 is a truncated cone having a large diameter portion 27 and a small diameter portion 28 as shown in FIG.

  As generally well known, the truncated cone is a solid obtained by cutting the cone along a plane parallel to the bottom surface and excluding the small cone portion including the apex T (FIG. 4). A curved surface drawn when another straight line J intersecting with this is made a circle is called a conical surface, and the straight line J is called a generatrix.

  At the beginning of the mold cleaning method according to the present invention (FIG. 9 (A)), the bus K (FIG. 5) closest to the V-groove bottom 26 of the mold D is selected from the bus J (FIG. 4). It arrange | positions in parallel with the V-groove shoulder parts 23 and 24. FIG.

  FIG. 6 is a diagram showing the relationship between the brush 20 according to the present invention and the rotating shaft 21.

  In FIG. 6, the brush 20 is implanted on the side surface of the columnar rotating shaft 21, and the entire brush 20 is trimmed into a truncated cone shape.

  FIG. 7 is a view showing a contact state between the brush 20 according to the present invention and the V-groove shoulder portions 23 and 24 of the mold D. FIG.

  In FIG. 7, the large-diameter portion 27 of the brush 20 (FIG. 7A) is in contact with the outer sides 23A and 24A of the shoulder portions 23 and 24, and the small-diameter portion 28 of the brush 20 is (see FIG. )), The shoulders 23 and 24 are in contact with the respective inner sides 23B and 24B.

  Further, the diameter portion between the large diameter portion 27 and the small diameter portion 28 of the truncated cone forming the brush 20 is continuously in contact from the outside to the inside of the V groove shoulder portions 23 and 24.

  That is, the contact area at the moment when the brush 20 contacts the V-groove shoulders 23 and 24 is as indicated by reference numerals q1 and q2 shown in FIG. When the brush 20 having a rotation is moved while being rotated (arrow A and arrow B in FIG. 9D), as shown in FIG. 9E, the outer side and the inner side of the brush 20 with respect to the V-groove shoulders 23 and 24 are shown. Contact areas Q1 and Q2, Q3 and Q4 are obtained.

  Therefore, according to the present invention, in the bending apparatus 1 (FIG. 1), deposits attached to a relatively wide range such as the outside and inside of the V-groove shoulders 23, 24 of the mold D (FIG. 9E). In particular, the adhesive 20 can be cleaned, and the brush 20 (FIGS. 4 to 7) has a diameter that continuously changes between the large diameter portion 27 and the small diameter portion 28. It is possible to provide a mold cleaning apparatus and a cleaning method thereof that can be used as they are without being replaced even if the width changes.

  FIG. 8 is a diagram showing the relationship between the rotation direction of the brush 20 according to the present invention and the cleaning direction of the V-groove shoulders 23 and 24 of the mold D.

  For example, if the counterclockwise rotation is normal (FIG. 8A), the brush 20 cleans while contacting the shoulder 23 from the outside to the inside, and the shoulder 24 from the inside to the outside. Clean while touching.

  On the other hand, for example, if the clockwise rotation is reversed (FIG. 8B), the brush 20 cleans while contacting the shoulder 23 from the inside to the outside, and the shoulder 24 from the outside to the inside. Clean while touching.

  Accordingly, when the brush 20 is moved along the longitudinal direction of the mold while being rotated in a state where it is in contact with the V-groove shoulder portions 23 and 24 (FIG. 9D), the brush 20 is moved in the longitudinal direction of the mold. By reciprocating along the direction, the brush 20 is rotated forward or reverse in the forward path, and then the brush 20 is rotated backward or forward in the return path. Improve dramatically.

  The operation of the present invention having the above configuration will be described below with reference to FIG.

(A) First, as shown in FIG. 9A, the brush 20 is arranged in parallel to the V groove shoulder portions 23 and 24 of the mold D.

  In this case, of the frustoconical buses J forming the brush 20 (FIG. 4), the bus K closest to the V-groove bottom 26 (FIG. 5) of the mold is parallel to the V-groove shoulders 23 and 24. (FIG. 9A).

(B) Next, as shown in FIG. 9B, the brush 20 is lowered and brought into contact with the V-groove shoulders 23 and 24.

  Accordingly, the large-diameter portion 27 of the truncated cone forming the brush 20 is outside the V-groove shoulder portions 23 and 24, and the small-diameter portion 28 of the truncated cone forming the brush 20 is inside the V-groove shoulder portions 23 and 24. The diameter portions between the large-diameter portion 27 and the small-diameter portion 28 of the truncated cone forming the brush 20 extend from the outside to the inside of the V-groove shoulder portions 23 and 24, respectively. Contact continuously.

  Therefore, the contact regions q1 and q2 at the moment when the brush 20 contacts the V-groove shoulders 23 and 24 are continuous regions from the outside to the inside of the shoulders 23 and 24 as shown in FIG. .

(C) Further, as shown in FIG. 9D, the brush 20 is moved along the longitudinal direction of the mold while being rotated while being in contact with the V-groove shoulder portions 23 and 24.

  As described above (FIG. 9C), when the brush 20 having the contact areas q1 and q2 at the moment of contact with the shoulder portions 23 and 24 is moved while being rotated as shown in FIG. 9D, As shown in FIG. 9E, contact areas Q1 and Q2, Q3 and Q4, which are long contact areas proportional to the moving distance and outside and inside the shoulder portions 23 and 24, are obtained.

  In this case, if the brush 20 is reciprocated along the longitudinal direction of the mold and the brush 20 is rotated forward or reverse in the forward path, and then the brush 20 is rotated backward or forward in the return path, each shoulder portion 23, 24, the forward path (FIG. 8A) and the return path (FIG. 8B) are contacted twice in the opposite direction (for example, from the outside to the inside, from inside to outside and vice versa). Since it can be cleaned, the cleaning efficiency is dramatically improved in this respect as compared with the conventional case.

  Therefore, according to the present invention, in the bending apparatus 1 (FIG. 1), deposits attached to a relatively wide range such as the outside and inside of the V-groove shoulders 23, 24 of the mold D (FIG. 9E). In particular, the present invention achieves the function and effect of providing a mold cleaning device and a cleaning method thereof capable of cleaning adhesive deposits.

  Furthermore, as described above, according to the present invention, since the brush 20 is formed of a truncated cone (FIGS. 4 to 7), the brush 20 of the present invention has a large-diameter portion 27 (FIG. 9B). ) To the small-diameter portion 28, and therefore a mold cleaning device and a cleaning method thereof that can be used continuously without replacement even if the width of the mold V-groove 25 changes. To achieve the action and effect of

  As described above, according to the present invention, in the bending apparatus, it is possible to clean deposits, particularly sticky deposits, which adhere to a relatively wide range such as the outside and inside of the V groove shoulder of the mold. Used for mold cleaning equipment and cleaning method that can be used as it is without changing even if the width of the mold V-groove changes. Furthermore, it is applicable not only to the descending press brake but also to the ascending press brake. Is extremely useful.

DESCRIPTION OF SYMBOLS 1 Bending apparatus 2, 3 Mold storage part 2A, 3B Mold exchange apparatus 7 Foot pedal 9 Mold cleaning apparatus 10, 11 Abutting 12 Upper table 13 Lower table 14, 15 Hydraulic cylinder 16, 17 Side plate 20 Brush 21 Rotation Shaft 22 Motor 23 One V-groove shoulder 24 Other V-groove shoulder 25 V-groove 26 V-groove bottom 30 Punch holder 31 Die holder D Die P Punch W Workpiece

Claims (8)

In a mold cleaning device in a bending device that bends a workpiece by a die consisting of a punch and a die,
A mold cleaning apparatus, wherein a rotation direction of a brush constituting the mold cleaning apparatus is orthogonal to a longitudinal direction of the mold.   2. The mold cleaning apparatus according to claim 1, wherein the shape of the brush is a truncated cone.   3. The mold cleaning apparatus according to claim 2, wherein the brush is planted on a side surface of a columnar rotating shaft, and the entire brush is trimmed into a truncated cone shape. A mold cleaning method using the mold cleaning device according to claim 1,
(1) After arranging the brush parallel to the V-groove shoulder of the mold,
(2) The brush is lowered and brought into contact with the shoulder of the V groove,
(3) A mold cleaning method, wherein the brush is moved along the longitudinal direction of the mold while rotating in a state where the brush is in contact with the shoulder of the V groove.   In said (1), the metal mold | die cleaning of Claim 4 which arrange | positions the bus bar nearest to the V groove bottom part of a metal mold | die among the bus bars of the truncated cone which forms a brush in parallel with this V groove shoulder part. Method.   In (2) above, when the brush is brought into contact with the V-groove shoulder of the mold, the large-diameter portion of the truncated cone forming the brush is outside the V-groove shoulder and the cone forming the brush is formed. The mold cleaning method according to claim 4, wherein the small-diameter portion of the base is in contact with the inside of the V-groove shoulder.   The mold cleaning method according to claim 6, wherein the diameter portion between the large diameter portion and the small diameter portion of the truncated cone forming the brush continuously contacts from the outside to the inside of the V groove shoulder.   5. The method according to claim 4, wherein in (3), the brush is reciprocated along the longitudinal direction of the mold, the brush is rotated forward or reverse in the forward path, and then the brush is rotated backward or forward in the return path. Mold cleaning method.

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