KR101319513B1

KR101319513B1 - Rotational movement converting device of bus bar bending machine

Info

Publication number: KR101319513B1
Application number: KR1020100108516A
Authority: KR
Inventors: 임인걸
Original assignee: 주식회사 우진정공
Priority date: 2010-11-03
Filing date: 2010-11-03
Publication date: 2013-10-21
Also published as: KR20120046948A

Abstract

The present invention can automatically set the bending angle setting work of the busbar material, very convenient and high precision, the operator does not need to manually handle the busbar material that is heavy, and the busbar bending processing device to ensure the safety of the operator To provide. To this end, the present invention includes a hydraulic mold having a fixed mold for bending a busbar material and a movable mold having a recess for bending at the tip, and a piston rod for reciprocating the movable mold with respect to the fixed mold. In the busbar processing apparatus configured, the movable mold is moved forward to reach the busbar material, starting from the time when the first close contact occurs, so that the forward linear movement of the movable mold is changed to a rotational motion proportional to the linear movement amount. Rotational movement converting means mounted to proximal portions protruding to both sides of the movable mold having a bending groove; Linear motion converting means installed above the movable mold to convert the rotational motion by the rotational motion converting means back into a linear motion; An encoder for converting and reversing the linear movement moving backward by the linear movement converting means into a rotation amount; A control means for setting a desired bending angle of the material by a numerical input method and controlling the switching direction of the hydraulic cylinder by detecting the distance that the movable mold moves forward by the feedback by the feedback by the input bending angle; It is composed.

Description

Rotational movement converting device of bus bar bending machine

The present invention relates to a device for processing bus bars used in various switchboards, distribution panels, and the like, and more specifically, in the bending (bending) processing of bus bars, the bending angle of the bus bars can be automatically set and processed. The invention relates to a bending angle setting device of a busbar bending machine, and more particularly, to a rotational motion converter of a busbar bending machine for converting a linear motion of a movable mold into a rotational motion.

In general, a connection piece called a bus bar made of a thick plate such as a copper plate or aluminum is used for a switchboard, a distribution panel, a control panel, etc., which is used for the design of a switchboard. Accordingly, various machining operations, such as cutting or bending or punching a plurality of fasteners, are required for mounting and connection with other members. Therefore, a busbar processing apparatus, which is a kind of press apparatus, is used for the processing of the busbar as described above.

Conventional busbar processing apparatus as described above is generally composed of a main body with a built-in drive device, a bending machine, a cutter, a punching machine and the like mounted on the upper portion of the main body. The bending machine, the cutter, and the punching machine are configured by attaching processing means suitable for each purpose to a plurality of presses installed on the upper portion of the main body, and operated by a driving device such as a hydraulic pump installed inside the main body.

Examples of the prior art having the above structure include the Korean Utility Model Registration No. 20-0091984 and the Utility Model Registration No. 20-357890 registered by the present inventors. A drilling unit, a bending unit, a cutting unit, and the like are formed, and a control unit including a hydraulic motor is provided on the front of the main body of the apparatus. As the user operates the control unit, the hydraulic motor provided therein is driven to each unit. Each unit can be driven by supplying hydraulic pressure.

The bending unit is a device having a function of bending the bus bar at a predetermined angle, and the upper mold moving up and down by the piston of the hydraulic cylinder installed to operate in the vertical direction is lowered while cooperating with the lower mold. The bar is bent at a certain angle. In this bending unit, the bending angle of the busbar is determined by the distance that the upper mold descends. Therefore, it is important to precisely control the lowering distance of the upper mold by the bending angle of the busbar. Due to the thick and long weight of the busbar material, the surrounding work space is required and safety risks for the operator must be considered.

In some cases, as shown in FIG. 10, a situation in which the busbar material 6 needs to be bent in two steps to have two bending points 6a and 6b is common, and the hydraulic cylinder is driven in the vertical direction. According to the conventional bending machine structure, as shown in FIG. 11, the material 6 is located in front of the worker, and thus, the length of the material 6 is bound to follow due to the interference of the work floor 40. In addition, the upper mold 41 is lowered toward the lower mold 42, the lower end of the raw material (6) during bending, the rotary motion in the direction of the arrow, the lower end of the raw material (6) as a result of hitting the worker's body safety There is a risk of causing an accident. On the contrary, when the upper mold 41 rises after the bending work, the busbar material is dropped due to the rotational motion of the busbar material falling due to the center of gravity of the busbar material 6. The worker may be injured by falling, and the busbar material 6 is formed of copper material with low current loss. There was a lot of inconvenience in handling the busbar material (6) of the copper material, which is heavy when bent at work.

On the other hand, in order to avoid the above problems, as shown in Figure 12 to work by placing the busbar material (6) in the opposite direction, the busbar material (6) is located on the top of the device to the operator to grab the material There was a problem that it was impossible to control the material at all. However, this is understood to be an unavoidable problem associated with installing the hydraulic cylinder to be driven vertically.

In general, the place where the distribution panel, distribution panel, control panel, etc. is installed is often narrow, but the conventional busbar processing apparatus as described above is provided with a driving device such as a hydraulic pump and a plurality of presses are formed thereon. Since the device is heavy and large and impossible to move the device, there is also a problem that it is difficult to immediately bend and shape according to the site situation in the installation place, such as switchboard.

In addition, due to the characteristics of the device in which the hydraulic cylinder is placed vertically, the lower mold must be a fixed mold, and the upper mold can be a movable mold for lowering operation. Since the installation of the device is unsightly and the size of the device is too large, a method of installing a hydraulic cylinder under the lower mold is widely used.

However, in this type of installation method, the piston rod of the hydraulic cylinder must be fixedly installed on the lower mold, so when the hydraulic cylinder is operated and the piston rod floats, the hydraulic cylinder must move up and down. In addition, the structure of the device is complicated and has a problem in stiffness by moving up and down with the guide of the guide, and the size of the device is increased and weighted because the supporting structure extends from the lower mold to the upper mold. .

On the other hand, the bus bar is processed, such as bending, cutting, punching, etc. through the bus bar processing apparatus is mounted on the switchboard, etc., the bus bar is bent and formed in various shapes according to the design of the switchboard, etc. In some cases, the installation of switchboards, etc., may require immediate processing and shaping of the busbars according to the site situation. Accordingly, the bending state of the busbars may vary depending on the installation of many terminals that require connection. The bending distance of the movable mold (which corresponds to the upper mold in the vertical hydraulic cylinder method) is different depending on the bending angle. Adjustment, ie the bottom dead center position that the hydraulic cylinder switches over, must be adjusted from time to time.

13 and 14 show a conventional apparatus for controlling the lowering distance of the upper mold 7, wherein the upper mold 7 is fixed on the side of the side support 7a on which the upper mold 7 is fixed at an upper and lower distance. And a vertical guide (9) rotatably fitted with the screw (10) formed on the holder (8), and one end is screwed to the vertical guide (9) so that the vertical guide (9) When the upper mold 7 is raised so that the upper sensor operating opening 12 to adjust the height up and down in accordance with the rotation direction of the upper and lower sides of the side support (7a) is guided, the middle of the vertical guide (9) The lower sensor operating port 13 in contact with the lower sensor 15 is fixedly installed.

On the side wall surface of the main body 1, a scale 16 is formed to check the bending angle of the busbar that is set corresponding to the vertical movement position of the upper sensor operating port 12, and the vertical guide 9 At the bottom of the knob, a knob 11 for rotating the vertical guide 9 is formed.

The conventional bending unit control device (falling distance control device) configured as described above, the user is holding the knob (11) to rotate the vertical guide (9) to set the target bending angle of the busbar upper sensor operating holes (12) While adjusting the height of the bus bar is set to determine the target bending angle of the bus bar is set as the number of the scale (16) indicated by the operating hole (12).

If the hydraulic pressure supplied from the hydraulic motor is supplied to the hydraulic cylinder 6 by operating a switch not shown in the state where the target bending angle of the busbar is set, the piston of the hydraulic cylinder 6 descends and the upper mold 7 This lowering is to bend the busbar, at this time, the direction of the hydraulic pressure supplied to the hydraulic cylinder (6) by the detection signal output from the upper sensor 14 when the upper sensor operating port 12 is in contact with the upper sensor 14 As the piston is raised, the piston rises and the upper mold 7 no longer descends and rises, and while the upper mold 7 rises, the lower sensor operating hole 13 formed in the vertical guide 9 is connected to the lower sensor ( The upper mold 7 is configured to stop at the initial position while the hydraulic cylinder 6 stops upon contact with 15).

However, in the above-described manner, instead of the piston rod being fixed due to the vertical installation structure of the hydraulic cylinder 6, the side support 7a includes the hydraulic cylinder 6, two side supports 7a and a lower support 7b. The structure of the descending distance control device (8-12) mounted on the reciprocating motion together with the guide device 16 supporting the lower mold is to be moved up and down together, so the overall structure of the device is very complicated, the size is large, and the noise is In particular, in the conventional descending distance adjusting device, the vertical guide 9 having the screw 10 extends so as to protrude to the lower side of the hydraulic cylinder 6 and avoids interference with the upper structure. Since the knob 11 for rotation adjustment is provided (refer to FIG. 13), the operator has to bend and operate the body severely during the rotation operation of the knob 11. Because of its location, it is inconvenient to check the scale, and there is no connection with the busbar bending angle, so when the bending angle is changed, it must be replaced with a mold with a changed bending angle. There were a number of problems, including the lack of immediate on-site verification of the accuracy of the system.

Reflecting this point, the present inventor has proposed a new type of busbar bending machine factory through Korean Patent Application No. 2010-20808.

According to the above-described invention, the operator does not need to directly handle the busbar material, which is heavy, and the safety of the operator is secured. In addition to reducing this, the stroke length of the movable mold can be easily and precisely adjusted according to the bending angle of the busbar, and the bending angle of the busbar material can be accurately measured, and it also hurts the beauty without disturbing the bending work. In addition, the present invention relates to the provision of a horizontal bar type bus bar bending processing apparatus having a rigid angle measuring means and a stroke distance adjusting means.

However, the new invention of the method proposed by the present applicant is very useful, but the structure of the stroke distance adjusting means is somewhat complicated, and when setting the busbar angle as a manual method, the hydraulic cylinder is intermittently intermittently by using the test piece first. The bending angle of the test piece is visually recognized through the goniometer embedded at the bottom of the work bench, and when the design angle is reached, the angle is set by the stroke length adjustment means, but at this time, the screw member and the forward detection block, etc. Because of the manual work, the setting work is cumbersome and there is a problem in accuracy, because the manual work has to be adjusted through several steps every time the angle is set. Inconvenient, like having to rebuild There is.

Therefore, the present invention has been proposed in view of the above problems, and its object is to rotate the linear motion of the movable mold in the bending angle setting device of the busbar processing machine used to automatically set the bending angle setting operation of the busbar material. It is to provide a rotary motion converter that converts the motion.

In order to achieve the above object, the present invention includes a movable mold having a fixed mold for bending the busbar material and a groove for bending at the tip, and a piston rod for reciprocating the movable mold with respect to the fixed mold. In the rotary motion converter for converting the linear motion of the movable mold into a rotary motion installed on the movable mold of the busbar processing machine including a hydraulic cylinder, the rotary motion converter is composed of a core member and a cam member The core member is vertically installed at both ends of the movable mold, and the movable mold is installed to rotate based on the central axis of rotation in proportion to the amount of the feed advanced from the state in which the movable mold is in close contact with the surface of the material to be bent and processed. The upper surface of the core member is formed with a bolt hole on the axis of rotation axis, the cam member is An elliptical cam surface is provided on the side thereof, and a bolt hole and a pin ball are formed at its fixed end, and the bolt hole is fastened with a bolt to coincide with the bolt hole formed at the center of rotation of the core member to fix the cam member to the core member. The pin hole may be fastened to the core member to fix the cam member so as not to be spaced apart from the core member.

In addition, according to another embodiment of the present invention is provided with a fixed mold for bending a bus bar material and a movable mold having a bent groove at the tip, and a piston rod for reciprocating the movable mold with respect to the fixed mold. In the rotary motion converter for converting the linear motion of the movable mold into a rotary motion installed on the movable mold of the busbar processing machine including a hydraulic cylinder, the rotary motion converter is composed of a core member and a cam member The core member is vertically installed at both ends of the movable mold, and the movable mold is installed to rotate based on the central axis of rotation in proportion to the amount of the feed advanced from the state in which the movable mold is in close contact with the surface of the material to be bent and processed. On the upper surface of the core member to form a bolt hole on the axis of rotation axis, the bolt hole is the nose It is formed in the center of the polygonal pillar projecting to the upper portion of the fish member, the cam member is provided with an elliptical cam surface on the outside thereof and forms a polygonal hole fitted into the polygonal pillar at the fixed end thereof, the polygonal hole of the cam member It is characterized in that it has a structure for fixing the cam member so as not to be spaced apart from the core member by fastening to the bolt hole with a bolt after mounting to the polygonal projection.

In addition, according to another embodiment of the present invention is provided with a fixed mold for bending a bus bar material and a movable mold having a bent groove at the tip, and a piston rod for reciprocating the movable mold with respect to the fixed mold. A rotational motion conversion device installed in a movable mold of a busbar processing machine including a hydraulic cylinder to convert the linear motion of the movable mold into rotational motion, wherein the rotational motion conversion device comprises a core member and a cam member. The core member is vertically installed at both ends of the movable mold, and installed so that the movable mold rotates with respect to the central axis of rotation in proportion to the amount of feed advanced from the state in which the movable mold is in close contact with the surface of the material to be bent, A fitting groove is formed in the upper surface of the core member, and the ball is placed on the center of rotation axis into the fitting groove. The cam member is provided with an elliptical cam surface on the outside thereof, and the fixed end of the cam member is fitted in the fitting groove to be airtight, so that a bolt hole corresponding to the bolt hole is formed to fit the fixed end to the fitting groove. By fastening to the cam member is characterized in that it has a structure for fixing so as not to be free from the core member.

In addition, according to another embodiment of the present invention is provided with a fixed mold for bending a bus bar material and a movable mold having a bent groove at the tip, and a piston rod for reciprocating the movable mold with respect to the fixed mold. A rotational motion conversion device installed in a movable mold of a busbar processing machine including a hydraulic cylinder to convert the linear motion of the movable mold into rotational motion, wherein the rotational motion conversion device comprises a core member and a cam member. The core member is vertically installed at both ends of the movable mold, and installed so that the movable mold rotates with respect to the central axis of rotation in proportion to the amount of feed advanced from the state in which the movable mold is in close contact with the surface of the material to be bent, A stepped groove is formed on the front upper surface of the core member, and the upper surface of the core member is disposed on the center of rotation axis. The cam member is provided with an elliptical cam surface on the outside thereof, and the cam member has a bolt hole corresponding to the bolt hole at its fixed end and has a downward bent portion protruding downward from the fixed end. After the downward bent portion of the end is supported by the stepped groove, it is characterized in that it has a structure to secure the cam member so as not to be spaced apart from the core member by fastening both bolt holes with a bolt.

According to the present invention, by inputting the desired bending angle of the busbar through the control means and operating the hydraulic cylinder, the half-moon core member of the rotational movement converting means from the moment of contact with the material while the movable mold is moving forward It rotates with the increase of the bending angle, and this rotation is represented by the linearly proportional linear motion by the linear motion converting means by the cam member having an elliptical cam surface. The linear motion is detected by the encoder and the rotation detected by the encoder When the control means switches the hydraulic cylinder at the moment corresponding to the set bending angle, the bending angle of the material can be accurately and simply set and bent, and the operation is started from the moment the movable mold contacts the material. This allows precise setting of bending angles regardless of material thickness changes.

As described above, the present invention has the characteristic that the elliptical cam surface of the cam member causes the proportional linear motion, so that the numerical control design for setting the bending angle is extremely simple.

1 is a perspective view of a bus bar bending processing apparatus having an angle setting device according to the present invention;
Figure 2 is an exploded perspective view of the major components constituting the angle setting device according to the present invention,
Figure 3 is a perspective view of the main portion showing the assembled state of the angle setting device according to the present invention.
4 is a side view showing the assembled state of the angle setting device according to the present invention;
5 is a front view showing an assembled state of the angle setting device according to the present invention.
6 is a plan view showing the shape of the first cam member, which is a main component of the angle setting device according to the present invention;
7 is a view for explaining the design method of the elliptical cam surface of the first cam member which is the main part of the angle setting device according to the present invention;
8 (a) to 8 (d) are views showing different embodiments of a method for fixing the cam member to the core member in the rotational motion converting apparatus which is the technical gist of the present invention.
9 is a diagram illustrating the operating state of the angle setting device according to the present invention divided by time zone during which the bending work of the work proceeds.
10 is a view showing a two-stage bending busbar material,
11 and 12 are views showing the state of the busbar material during the two-stage bending process of the busbar material by the conventional busbar bending machine.
13 and 14 is a view showing the structure and installation state of the lowering distance adjusting device of the upper mold under a conventional vertical hydraulic cylinder.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the present invention, bus bar bending machine factory value of the present invention will be described in detail.

As shown in FIG. 1, the bus bar bending processing apparatus 51 according to the present invention has a work table 53 having a predetermined work height having four wheels 52 at the bottom thereof, and the work table 53 is provided. The base member 54 to which the main part of the apparatus is mounted is fixedly installed on the upper part of the upper part of the base member 54, and the working plate 55 having the same plane is provided on both sides of the base member 54. The material 56 has a large planar area sufficient to support it.

A piston rod fixedly installed in a shape in which the hydraulic cylinder 57 is laid in the rear of the upper surface of the base member 54 (the piston rod is housed in the protective cover 58 in the drawing to protect the piston rod). Hidden by the cover) is reciprocated in the horizontal front and rear directions, and a movable mold 59 is fixed to the front end of the piston rod by a bolt so that the movable mold 59 operates the hydraulic cylinder 57. It is configured to slide in the front and rear direction of the device relative to the stationary mold 90 on the surface of the base member (54).

Bending groove 60 for bending up and down is formed at the front end of the movable mold 59, and the planar shape of the movable mold 59 has a U-shaped or V-shape in the front, and the movable mold 59 has a As a gist of the present invention, as shown in Figs. 2 to 4, a configuration including a rotational motion converting means 62, a linear motion converting means 63, and an encoder 64 constituting the angle setting device 61 is provided. And, as will be described in detail later, the desired bending angle of the material 56 is set by a numerical input method, and the distance detected by the movable mold 59 by the input bending angle is detected through the encoder 64 by feedback. Control means 65 for controlling to switch the operation direction of the hydraulic cylinder 57 so as to protrude high above the work table 53 with a rotational support point on the base member 54 behind the hydraulic cylinder 57. Turn the said rotation The copper converting means 62 (rotational motion converting means used in the following specification means the rotational motion converting apparatus used in the claims), and the movable mold 59 is moved forward to reach the bus bar material 56. Tip portions protruding to both sides of the movable mold 59 with the bending groove 60 so as to change the forward linear movement of the movable mold 59 into a rotational motion proportional to the linear movement amount, starting from the point where the surface contact occurs. 72 and an upper portion thereof, the linear motion converting means 63 is installed to the upper side of the movable mold 59 to convert the rotary motion by the rotary motion converting means 62 back into linear motion, The encoder 64 is installed behind the encoder 64 in conjunction with the linear motion converting means 63 to convert the reverse linear motion by the linear motion converting means into a rotation amount and detect the amount of rotation.

The rotational motion converting means 62 is a planar surface in close contact with the plane when the material 56 approaches the material 56 as opposed to the material 56 to be processed as shown in FIGS. 8A and 9 as the subject matter of the present invention. A half-moon core member 68 having a portion 66, an arc portion 67 forming a rear surface of the flat portion 66, and a core member fixed to the central axis of rotation 69 of the core member 68. (68) is installed on the upper portion of the core member (68) when the rotational movement with the rotational movement from the rotation center axis 69 as a starting point, the outer side includes a first cam member (71) having an elliptical cam surface (70) The core member 68 is installed in the rod shape formed in the both ends of the front end 72 is installed vertically on both front ends 72 of the movable mold 59 in the shape of a long rod up and down. The circular arc portion 67 having the same curvature on the surface 73 is supported in close contact with the flat portion 66. The core member 68 is configured to slide in rotation along the guide of the arc guide surface 73 starting from the rotation center axis 69 when the material moves forward in surface contact with the material 56.

The first cam member 71 forms a bolt hole 74 at its fixed end 71a on the rotational central axis 69 line, and rotates the bolt hole 74 on the upper surface of the core member 68. The first cam member to match the bolt hole 75 formed in line with the central axis 69 to be fastened by fastening with the bolt 76, and to receive the rotation moment from the rotation central axis 69 ( In addition to the bolts 74 and 75, pins 77 and 78 are added to prevent 71 from being excessively applied during rotation, thereby reducing play (in this sense, turning in a fixed state). It is formed and fastened with a pin 79 so as to form a single body by reinforcing the first cam member 71 so as not to move from the core member 68 even if the first cam member 71 receives a rotation moment caused by an external force during operation.

Figure 8 (b) is a configuration of another embodiment of the rotational motion conversion means (61a) of the present invention, the bolt member 75 is formed on the center of rotation axis 69 on the upper surface of the core member 68, The bolt hole 75 is a polygonal pillar 91 which protrudes upwardly (exactly, as much as the thickness of the first cam member) higher than the upper surface of the core member 68, and in the illustrated embodiment, a quadrangular pillar. The cam member 71 is formed at the center of the water, and the elliptical cam surface 70 is provided on the outside thereof. The cam member 71 has a polygonal hole 92 which is hermetically fitted to the polygonal pillar 91 at its fixed end 71a. Formed and the polygonal hole 92 of the first cam member 71 is fitted into the polygonal pillar 91 and then fastened to the bolt hole 75 with a bolt 76 to form the first cam member 71. ) Is fixed to the core member 68 so as not to be spaced apart.

8 (c) is a configuration of another embodiment of the rotational movement converting means 61b of the present invention, wherein the bolt hole 75 is formed on the center of rotation axis 69 on the upper surface of the core member 68, The bolt hole 75 is formed to be located in the fitting groove 93 which is recessed in the lower portion slightly lower than the upper surface of the core member 68 (exactly, as deep as the thickness height of the first cam member), the fitting groove 93, When the fixing end 71a of the first cam member 71 is inserted into the groove 93 to fasten both bolt holes 74 and 75 with the bolt 76, the first cam member 71 is the core member. (68) has a structure that is fixed so as not to play.

8 (d) is a configuration of another embodiment of the rotational motion converting means 61c of the present invention, the bolt member 75 is formed on the center of rotation axis 69 on the upper surface of the core member 68, A stepped groove 94 is formed at an upper end contacting the flat portion 66 of the core member 68, which is recessed downwardly a little lower than the upper surface (exactly, the width and height of the thickness of the first cam member). The bent portion 95 is formed by bending the end portion of the fixed end 71a of the first cam member 71 in a downward direction to form an a-shape to form the downward bent portion 95 in the stepped groove ( 94), and then fastening both bolt holes (74) and (75) with bolts (76), even if the first cam member (71) receives a large moment during operation, there is a gap from the core member (68). Is fixed.

In addition, the linear motion converting means 63 includes a second cam member 80 which performs a linear motion toward the rear in association with the rotational motion of the first cam member 71, and second cams positioned on both the left and right sides. The cam block 81 is installed so as to be in close contact with the upper or lower surface of the member 80 and fixed by a plurality of bolts (not shown), and the tip portion of the cam block 81 at the center of the cam block 81. Rotational movement which is fixed by the movement distance measuring rack gear 83 is extended to the rear and the outer side of the first cam member 71 is rotated linearly backward movement of the rack gear (83) Will appear.

The second cam member 80 has an inclined cam surface 84 which is in point contact with the elliptical cam surface 70 of the first cam member 71 through a point, thereby rotating the first cam member 71. It is pushed backward in proportion to the angle.

The encoder 64 is provided with a pinion gear 85 engaged with the rack gear 83 to rotate by the linear motion of the rack gear 83, the movable mold 59 is the material 56 The linear feed amount from the moment when it is in surface contact with the linear motion is rotated by the angle setting device 61, the rotary motion is converted into linear motion, and the linear motion is converted into rotary motion by the encoder 64. Through a series of feedback processes, the set bending angle of the material 56 is completed, and when the bending process is completed and the piston rod and the movable mold of the hydraulic cylinder are retracted, the angle setting device 61 of the reverse process The return means is returned to its original shape. As the return means, an elastic return means 86 by a tension spring having a fixed support point outside of the center of rotation 69 of the core member 68 is used. The return means 86 is It is installed to be accommodated in the mounting groove 87 formed above and below the walls of both sides of the copper mold 59, and the tension spring 86 is elongated when the movable mold 59 is advanced and the core member 68 is rotated. When the elastic force is accumulated and the movable mold 59 is retracted, the core member 68 is pulled back to its original position, and when fully returned to the original position, the planar portions 66 on both sides coincide in a straight line.

On the other hand, the reason why the cam surface 70 of the first cam member 71 is designed to be elliptical without forming a circular arc having a constant curvature radius is linear even when the circular motion is rotated at a uniform angle when converted into linear motion. When the value of the motion is divided by 5 ° along the trajectory of the rotation radius of the circle having the same angle, for example, a circle, as shown in Fig. 7 (a), the linear feed amount in which the rotation angle of 5 ° appears depending on the position is respectively This is because it is difficult to apply it as it is because it has a difficulty in numerical control design. Therefore, as shown in (b) of FIG. 7, an equiangular, for example, right angle is divided by 5 ° and a reference point on the horizontal line (this reference point is a rotational axis). A line from radiation T1 to T18, the start point S of the ellipse is set, and the length of the first arc C1 is set to 5 (for example). ° Rotate straight It means that the feed amount is 5 (if the angle is small, the length of the first arc C1 and the length 5 of the straight line may be approximately equal to each other). Draws the horizontal lines H1 to H18 at the intersection points P1 to P18 that meet the radiation T1 to T18, for example, the intersection point P7 where the radiation T7 and the horizontal line H7 meet is one point of the ellipse. By designing the trajectory, intersection points from P1 to P18 are obtained, and when the intersection points are smoothly curved, an elliptical cam surface 70 is obtained. Eventually, even if the length of the arc increases from C1 to C18 with respect to the isometric rotation of the first cam member 71, the distance that the second cam member 80 retreats in a straight line has the same value, so that the numerical control for the angle setting is performed. The design is extremely simple, and if the dividing angle is small, the number of intersection points can be obtained and the precise cam surface can be obtained.

Hereinafter, the bending angle setting operation of the material 56 will be described in more detail with reference to FIG. 8.

As shown in step ⑤ of FIG. 9, when the bus bar material 56 is to be bent at 90 ° (internal angle, 270 in external angle), first, the 90 through the keyboard 88 of the control means 65 is bent. If you input °, the value entered on the display screen 89 appears to confirm the exact angle input (if the input angle is set, the allowable amount of the rack gear is determined).

When the bending angle is set in this way, the material 56 is inserted into the rear of the fixed mold 90 so that the bending point is located at the tip of the fixed mold 90, and then the hydraulic cylinder 57 is operated. As a result, the movable mold 59 is advanced. However, in the state where the movable mold 59 falls short of the raw material 56, the angle setting device 61 has no operation, and both flat portions 66 forming the tip of the core member 68 of the movable mold are The angle setting device 61 starts to operate from the moment the surface contact is made to reach the material 56.

When the movable mold 59 is advanced in the initial surface contact state, the material 56 starts to bend (see ② in FIG. 9: refer to 160 ° bending state), and in this state, the core member 71 is forcibly made of the material ( Since the 56 is pressed, the core member 71 also rotates as much as the material 56 is bent.

When the core member 71 rotates, the first cam member 71 fixed therewith also rotates, thereby changing the contact point of the elliptical cam surface 70 with the inclined cam surface 84 of the second cam member 80. While the second cam member 80 is pushed backward to move.

When the second cam member 80 moves backward, the rack gear 83 also moves backward through the cam block 81, and the pinion gear 85 engaged with the rack gear 83. Rotates, the rotation amount (rotation angle) of the pinion gear 85 is detected by the encoder 64, and the information is input to the control means 65.

At this time, the control means 65 is a bending amount input in real time and the amount of rotation of the pinion gear 85 corresponding to when the preset bending angle reaches 90 ° (the amount of rotation is a linear movement amount of the rack gear 83). Compared with the rotation amount (or rack gear feed amount) at each 160 °, it is determined that the target angle has not yet been reached, so that the bending operation is continued. Accordingly, the movable mold 59 continues to move forward. As in ③ and ④ of 9, the material 56 gradually approaches the target bending angle in the order of 140 ° and 120 °, wherein the rotation angle of the first cam member 71 is increased and the rack gear is proportional thereto. The amount of reverse movement of 83 is also increased. Finally, the control means 65 receiving information from the encoder 64 at the moment when the material 56 is bent by 90 ° as shown in ⑤ in Fig. 9 is the current rack gear. The amount of travel (pinion gear rotation) set It is determined that the amount is equal to the amount (see ⑤ in Fig. 9, the rack gear 83 can be seen to retreat backward from the encoder 64), and the hydraulic cylinder 57 is controlled to be switched to operate. (59) will stop moving forward and start backward.

As described above, in the present invention, when the angle to be bent is input as a numerical value, the amount of backward conveyance of the rack gear 83 is determined. If it matches, it determines that the set bending angle is completed and controls to switch the hydraulic cylinder, wherein the elliptical cam surface 70 of the first cam member 71 of the present invention is the rotational motion of the second cam member 80 Inevitably causes a linear movement in proportion to, and is firmly mounted to the core member 68, the clearance is eliminated, thereby improving the reliability of the angle setting.

Embodiment of the rotational motion converter of the horizontal actuated busbar bending machine of the present invention described above is merely illustrative, and those skilled in the art to which the present invention pertains various modifications and equivalents therefrom. It will be appreciated that other embodiments are possible. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. Accordingly, the present invention has been described with respect to the case where the horizontal actuated hydraulic cylinder is installed, but not limited thereto, and the angle setting device of the present invention is equally applicable to a bus bar bending processing apparatus in which the vertical actuated hydraulic cylinder is installed. Technically obvious

51: bus bar bending machine 52: wheel
53: workbench 54: base member
55: working board 56: busbar material
57: hydraulic cylinder 58: piston rod protection cover
59: movable mold 60: groove for bending
61: angle setting device 62: rotational movement converting means
62a, 62b, 62c: rotational movement converting means
63: linear motion conversion means 64: encoder
65: control means 66: plane
67: arc part 68: half-moon core member
69: rotation axis 70: elliptical cam surface
71: first cam member 71a: fixed end
73: arc guide surface 74: bolt ball
75: Bolt ball 76: Bolt
77,78: Pin ball 79: Pin
80: second cam member 81: cam block
82: pin 83: rack gear
84: Inclined cam surface 85: Pinion gear
86: elastic means (tensile spring) 87: spring mounting groove
88: keyboard 89: display screen
90: fixed mold 91: polygon pillar
92: polygon hole 93: fitting groove
94: step groove 95: downward bent portion

Claims

Busbar processing machine comprising a hydraulic mold having a fixed mold for bending a bus bar material and a movable mold having a bending groove at the tip, and a piston rod for reciprocating the movable mold with respect to the fixed mold. A rotational motion converter for converting a linear motion of the movable mold into a rotational motion installed on the movable mold of the movable mold, wherein the rotational motion converter is composed of a core member and a cam member, the core member is on both sides of the movable mold Installed vertically at the tip, the movable mold is installed so as to rotate relative to the center of rotation in proportion to the amount of feed forward from the state in which the movable mold is in close contact with the surface of the material to be bent, and the top of the core member on the center of rotation A bolt hole is formed on the bolt hole, and a pin hole is formed at a distance spaced from the bolt hole, and the cam portion is formed. An elliptical cam surface is formed on the outside thereof, and a bolt ball and a pin ball respectively corresponding to the bolt ball and the pin ball formed on the core member are formed at the fixed end thereof, thereby forming bolt balls and pin balls on both sides of the core member and the cam member. Rotational motion converter of the busbar bending machine, characterized in that the cam member is fixed to the core member so as to fasten the bolt and pin in a matched state so as not to be spaced apart from the core member. .

Busbar processing machine comprising a hydraulic mold having a fixed mold for bending a bus bar material and a movable mold having a bending groove at the tip, and a piston rod for reciprocating the movable mold with respect to the fixed mold. A rotational motion converter for converting a linear motion of the movable mold into a rotational motion installed on the movable mold of the movable mold, wherein the rotational motion converter is composed of a core member and a cam member, the core member is on both sides of the movable mold Installed vertically at the tip, the movable mold is installed so as to rotate relative to the center of rotation in proportion to the amount of feed forward from the state in which the movable mold is in close contact with the surface of the material to be bent, and the top of the core member on the center of rotation Form a bolt hole on the bolt hole is a polygonal pillar projecting to the upper core member It is formed in the center, and the cam member is provided with an elliptical cam surface on the outside thereof and forms a polygonal hole fitted into the polygonal pillar at its fixed end to insert the polygonal hole of the cam member into the polygonal pillar. Rotational motion converter of the busbar bending machine, characterized in that the cam member is fixed to the bolt hole by a bolt so as not to be spaced apart from the core member.

Busbar processing machine comprising a hydraulic mold having a fixed mold for bending a bus bar material and a movable mold having a bending groove at the tip, and a piston rod for reciprocating the movable mold with respect to the fixed mold. A rotational motion converter for converting a linear motion of the movable mold into a rotational motion installed on the movable mold of the movable mold, wherein the rotational motion converter is composed of a core member and a cam member, the core member is on both sides of the movable mold Installed vertically at the tip, the movable mold is installed in close contact with the surface of the material to be bent and installed so as to be rotated relative to the center of rotation in proportion to the amount of advancement, and a fitting groove is formed on the upper surface of the core member. And a bolt hole on the rotation center axis line into the fitting groove, and the cam member is outside of the cam groove. The cam member is provided with an oval cam surface and is securely fitted to the fitting groove so that a bolt hole corresponding to the bolt hole is formed to fasten the fixing end to the fitting groove with a bolt. Rotational motion inverter of the busbar bending machine, characterized in that it has a structure that is fixed so as not to play.

Busbar processing machine comprising a hydraulic mold having a fixed mold for bending a bus bar material and a movable mold having a bending groove at the tip, and a piston rod for reciprocating the movable mold with respect to the fixed mold. A rotational motion converter for converting a linear motion of the movable mold into a rotational motion installed on the movable mold of the movable mold, wherein the rotational motion converter is composed of a core member and a cam member, the core member is on both sides of the movable mold Installed vertically at the tip, the movable mold is installed so as to rotate relative to the center of rotation in proportion to the forwarding amount from the state in which the movable mold is in close contact with the surface of the material to be bent, the stepped groove on the front upper surface of the core member And a bolt hole corresponding to the rotation center axis line on an upper surface thereof, and the cam member An elliptical cam surface is provided on the outside thereof, and the fixed end thereof has a bolt hole coinciding with the bolt hole, and has a downward bent portion protruding downward from the fixed end so that the downward bent portion of the fixed end is supported by the stepped groove. And then bolts to both bolts to secure the cam member so that the cam member is not spaced apart from the core member.