JPH0112573B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a forming processing device that can perform forming processing such as bending and cutting of a material to be formed, such as a connecting wire, in any desired length and direction. It can be applied to molding equipment suitable for production.

[Prior art]

Conventionally, this type of technology involves a bending process or stripping at both ends (when the material to be formed is a covered wire) of a material that has been cut to a predetermined size.
There are some products that are transferred to the next step and subjected to prescribed processing. However, with this technology, when the dimensions of cutting, bending, or stripping the material to be formed change, it is necessary to change the dimensions at each step, so it takes time to change the setup, and it is difficult to perform complicated bending processes. There was a problem.

[Purpose of the invention]

The present invention provides a molding apparatus that can easily change the molding dimensions and molding direction of a molded material.

[Summary of the invention]

The present invention provides a feed unit that feeds a predetermined amount of a material to be formed, a bending unit that is arranged in front of the feed unit and bends the material to be formed fed from the feed unit into a predetermined shape, and a bending unit that bends the material that is bent by the bending unit. The bending unit includes a cutting unit for cutting the molded material, the bending unit has a nozzle for drawing out the fed material to be molded, and a bending means for pressing and bending the material to be formed protruding from the nozzle, and the bending unit has A rotating member rotatably attached around the nozzle, and a bending member attached to the rotating member movably in a direction toward and across a passage for the material to be formed protruding from the tip of the nozzle. It is characterized by having pieces.

[Embodiments of the invention]

FIG. 1 is a front view of the entire embodiment of the present invention, and FIG. 2 is a side view thereof. Reference numeral 1 denotes a frame that supports the device, and consists of a base 1a and a tower 1b extending upward from the base. A feed unit 2 is provided on the base 1a and is composed of a feed chuck 2a for feeding the material to be formed, a return prevention chuck 2b, a cylinder 2c for reciprocating the feed chuck, and a member 2d for supporting these. Reference numeral 3 designates a bending unit for bending the material to be formed, which includes a nozzle 3a for guiding the material to be formed sent from the feed unit, a bending means 3b for bending the material to be formed protruding from this nozzle, and a cylinder 3c for driving this bending means. It consists of etc. 4 is a cutting unit for cutting a predetermined position of the part protruding from the tip of the nozzle 3a, and is composed of a cutting part 4a and a driving cylinder 4b.

Next, the configuration of each unit will be described in more detail.
As shown in FIG. 3, the feed chuck 2a and return prevention chuck 2b of the feed unit each include an electromagnet 2e, a movable core 2f, and a tube 2g for leading out the material to be formed 5 (covered wire). A fixed stopper 6 is provided at the forward end of the movement range of the feed chuck 2a, and near the backward end there are provided stoppers 7a, 7b, . still,
7, 7a to 7g are feed amount setting devices. As shown in FIG. 4, the slide table 7 is moved one pitch P at a time in the direction of the arrow by the rotation of the stepping motor 8. In FIG. 3, the feed chuck 2a and the return prevention chuck 2b alternately hold the covered wire 5 and transport it to the left. That is, the movable core 2f of the chuck 2a in FIG.
At this time, the chuck 2b is
The electromagnet is energized and moves the movable core 2f upward, not holding down the electric wire 5. Next, the chuck 2a is moved back to the right by the cylinder 2c without pressing the electric wire, and its rear end hits the stopper 7a and stops. At this time, the electromagnet 2e of the chuck 2b is in a non-excited state, and its movable core 2f presses the electric wire 5 with an excitation spring to prevent the electric wire from bunching (retreating) due to the retraction of the chuck 2a. Since the distance between the rear end of the chuck 2a in contact with the fixed stopper 6 and the feed rate setting stopper 7a is set to a,
The above-mentioned retreat distance of the chuck 2a is a. This retreat distance becomes the distance by which the chuck 2a moves forward next, and also becomes the feed amount of the electric wire 5. The slide table 7 is moved by pitches P by the stepping motor 8 in synchronization with the advance of the chuck 2a.
Sets the wire feed amount when the chuck 2a moves forward next time. Therefore, by placing the stoppers 7a to 7g at arbitrary positions, the wire feed amount can be set arbitrarily.

Figure 5 shows details of the bending unit. 3
A is a cylindrical nozzle for leading out the electric wire sent from the feed unit, and a through hole for guiding the electric wire is provided in the center. The bending means 3b has the following configuration. Reference numeral 9 denotes a joint that connects the drive shaft of the cylinder 3c and the pinion 10 so as to be slidable (rotational direction), and is attached so as to be slidable in the axial direction along the outer periphery of the nozzle 3a. The pinion 10 is attached so as to be slidable and rotatable in the axial direction along the outer periphery of the nozzle 3a. Further, the pinion 10 is provided with teeth on its outer periphery, and meshes with the teeth of a rack 11 disposed below. 12 is the nozzle 3a of the pinion 10
13 is a drive rod configured to be able to move in conjunction with the pinion 10 via the connection portion 12; 14 is a drive rod 13 and A guide 1 which is a slide rod configured to be slidable, has a movable ball 15 in the middle, and slidably guides a bending piece 18 at the front end.
It has 4a. 16 is a rotating member rotatably supported on the outer periphery of the nozzle 3a, 17 is a V-shaped lever interposed between the front end of the drive rod 13 and the bending piece 18, and the center is pivotally supported by the slide rod 14. The driving rod 13 and the rotating member 16 are provided with relief grooves 13b and 16a for the balls 15 at the interface with the slide rod 14. Further, the drive rod 13 has a biasing portion 1 that constantly presses and biases the ball 15 toward the nozzle 3a.
3a is installed.

The relationship between the rack 10 and the pinion is shown in FIG.
Reference numeral 19 is a cylinder for moving the rack 11 in the direction of the arrow, and reference numeral 20 (position setting device) is a group of stopper cylinders located at the front end of the rack. cylinder 20
A, 20b, 20c, and 20d each have a protruding drive shaft, and the front end of the rack 11 is placed on each drive shaft to stop its movement, and the bending piece 18 is rotated around the nozzle 3a to -Y, -X, +Y,
Make it standby at the +X position. Figures 8 and 9 show a state in which the drive shaft of the cylinder 20a protrudes, the rack 11 stops at that position, and the bending piece 18 waits in the -Y direction to bend the electric wire 5 in the +Y direction. There is.

Now, the operation of the bending unit with the bending piece 18 set as shown in FIGS. 8 and 9 will be described.

From the state shown in FIG. 5, the cylinder 3c causes the drive shaft to protrude in the direction of the arrow. The drive rod 13 moves in the direction of the arrow via the joint 9, pinion 10, and connecting portion 12. At this time, the ball 15 is connected to the drive rod 13.
Since the slide rod 14 is fitted across the relief groove 13b of the slide rod 14, the slide rod 14 moves together with the drive rod in the direction of the arrow, resulting in the state shown in FIG. In this state, the rear end flange portion 14b of the slide rod 14 hits the rear end of the rotating member 16, and further advancement of the slide rod 14 is prevented. Relief groove 1 of rotating member 16
6a is constructed so as to coincide with the ball 15 in the state shown in FIG. Therefore, in the case of FIG.
3a allows the ball 15 to pass through the relief groove 13b and enter the relief groove 16a. Further, in the state shown in FIG. 6, the bending piece 18 guided by the guide 14a is configured to face near the tip of the nozzle 3a.

When the cylinder 3c further protrudes the drive shaft,
As shown in FIG. 7, the drive rod 13 moves in the direction of the arrow. At this time, since the ball 15 has come out of the relief groove of the drive rod 13, only the drive rod 13 moves in the direction of the arrow. Therefore, the center pivot point of the lever 17 does not move, but the pivot point with the drive rod 13 moves in the direction of the arrow and rotates clockwise. The bending piece 18 is the lever 17
As the nozzle 3a rotates, it rises while being guided by the guide 14a, protrudes into the passage of the electric wire 5, and presses and bends the electric wire 5 protruding from the tip of the nozzle 3a upward by approximately 90 degrees. At this time, it is assumed that the electric wire is one that undergoes plastic deformation. The bending piece 18 has an inclined surface 18a on the shoulder on the nozzle 3a side at the upper end to make it easier to bend the electric wire 5. After forming the electric wire, if the cylinder 3c attracts the drive shaft, the operation is reverse to that described above, that is, from Fig. 7 to Fig. 6.
Bending piece 18 and drive shaft 13 in the order shown in Figure → Figure 5.
returns. As mentioned above, the bending unit is
It functions through two-stage operation of the drive rod and slide rod.

In the above embodiment, the electric wire 5 is bent approximately 90 degrees, but the electric wire can be bent into a pure angle by increasing the distance between the bending piece 18 shown in FIG. 6 and the tip of the nozzle 3a. Furthermore, the electric wire 5 can be bent at an acute angle if the bending piece 18 is raised so as to curve above the nozzle instead of moving in a straight line. At this time, the bending piece 18 is formed into an arc shape,
The guide groove (hole) of the guide 14a may also be formed in an arc shape.

Next, details of the cutting unit will be explained. In FIGS. 10 and 11, 26 is a fixed base that supports the cutting part 4a and the cylinder 4b, 23 is a driving body that is pressed by the cylinder 4b and moves along the base 26, and 24 is a driving body. 23 and a base 26, and has a ball 25 which is movable in the central groove by a sliding body that slides between the two. A relief groove 23 for the ball 25 is provided on the contact surface of the drive body 23 with the slide body.
b, and the push rod of the biasing portion 23a that constantly pushes the ball 25 toward the base 26 faces the bottom of the groove 23b. The base 26 is provided with an escape groove 26a for the ball 25 on the surface that comes into contact with the slide body 24.

Reference numeral 36 denotes a base on which the cutting section is placed, which is connected to the slide body 24, and slides on the base 26 with the slide body 24 sandwiching the base 26 from the left and right sides. The base 36 is formed in an L-shape, and the cutting portion 4a is mounted on the horizontal portion 36'. 32
is fixed to the base with a cylinder that drives the cutting section. Reference numeral 33 denotes a driving member moved by the cylinder 32, which is L-shaped and has wire grippers 4 on the sides.
1 and also slidably supports a pressing member 42 that drives the gripper 41 to open and close. The gripper 41 is constantly biased by a spring (not shown) to the open state shown in FIG. 43
is a roller provided at the rear end of the pressing member 42. 3
4 is the horizontal portion 3 of the base 36 together with the driving member 33
6' is a slide member slidably provided.
The slide member 34 has an L-shape, pivotally supports a cutting blade group 44 on its side portion, and slidably supports a pressing member 45 that drives the cutting blade group 44 to open and close. The cutting blade group 44 consists of two strip blades 44a and a cutting blade 44b arranged between the strip blades 44a.These three blades are attached to a pair of holders 44c that open and close, and can be opened and closed together. be done. The cutting blade group is always urged in the opening direction by a spring (not shown) in the state shown in FIG. 46 is a roller provided at the rear end of the pressing member 45.

The slide member 34 is movably inserted into the hole 3.
5. The drive member 33 has an escape groove 33b for the ball 35 on the contact surface with the slide member,
At the bottom of this escape groove 33b is a biasing portion 33a that constantly pushes the ball 35 toward the rising portion 26' of the base.
A push rod is coming.

Next, the operation of the cutting unit will be explained. After being formed into a crank shape by the action of the bending unit, the electric wire 5 is fed by the feed unit and protrudes from the nozzle 3a in the positional relationship shown in FIG.
The cutting unit starts operating from this state.

The cylinder 4b moves the driver 23 in the direction of the arrow, and the driver 23 descends. At this time, ball 25
is fitted across the clearance groove 23b of the drive shaft 23 and the slide body 24, so that the slide body 24
moves in the direction of the arrow together with the driving body 23. Accordingly, the cutting portion 4a descends together with the base connected to the slide body 24, and the gripper 41 and cutting blade group 44 approach the electric wire 5.

When the ball 25 aligns with the relief groove 26a of the base 26 due to the movement of the drive body 23 and the slide body 24, it is pushed into the relief groove 26a and connects the slide body 24 and the base 26. Therefore, depending on the subsequent operation of the cylinder, the slide body 24 may move against the base 2.
6 and does not move, and the driving body 23 moves. Although not shown, when the escape grooves 23b and 26a are aligned, the lower side 23c of the driving body 23 hits the rollers 43 and 46 of the pressing member, and the gripper 41 and the cutting blade group 44 move as shown in FIG. 15A. They are arranged opposite to each other so as to sandwich the electric wire 5 therebetween.

When the cylinder 4b further moves the driver 23 in the direction of the arrow, the lower side 23c of the driver 23 pushes the pressing members 42, 45 via the rollers 43, 46 (see FIG. 12). By pressing down the pressing member, the gripper 41 and the cutting blade group close almost simultaneously, and as shown in FIG. 15B.
The state will be as follows. Here, the gripper 41 holds the sheath of the electric wire 5, and the cutting blade 44b cuts the conductor and sheath of the electric wire 5 at the same time.
The stripping blades 44a simultaneously cut only the covering of the electric wire 5. The cylinder 4b stops moving in this state.

Next, the cylinder 32 begins to operate, and its drive shaft moves the drive member 33 in the direction of the arrow. As shown in FIG. 12, since the ball 35 is fitted into the relief groove 33b of the drive member 33 and the slide member 34 at the same time, both move simultaneously. The gripper 41 and the cutting blade group 44 simultaneously move in the direction of the arrow, resulting in the states shown in FIGS. 13 and 15C. Here, the covering of one of the electric wires 5 cut by the cutting blade 44b is removed. At this time, the relief grooves 33b and 36a of the drive body 33 and the base 36 align, the ball 35 is moved to the relief groove 36a by the biasing part 33a, and the slide body 34 is locked to the base 36.
Further movement is prevented.

The cylinder 32 continues to operate, further pressing the driver 33 in the direction of the arrow. Since only the driving body 33 slides, only the gripper 41 moves in the direction of the arrow from the state shown in FIG. The other wire of the wire 5 cut by the cutting blade 44b is pulled in the direction of the arrow by the gripper 41, and its coating remains on the cutting blade group 44, resulting in the state shown in FIG. 15D. The cylinder 32 stops in this state.

When the cylinder 4b reversely operates to move the drive shaft backward in the above state, the gripper 41 and the cutting blade group 4
4 opens, the shaped electric wire 5 falls from the gripper 41, and the sheathing stripped from the cutting blade group 44 falls.

After this, the cylinders 4b and 32 operate in reverse and each part returns to the position shown in FIG.

As mentioned above, the cutting unit is
The function is achieved by the two-stage operation of the drive member 33 and the slide member 24, and the two-stage operation of the drive member 33 and the slide member 34.

In Fig. 1, 50 is a curling unit;
Details of the tip are shown in FIG. 16. 51 and 52 are molds for curling the exposed conductor 5a, and the mold 52 has a molding piece 53 having a circular cross section. A curling lever 54 has a molded pin 55 having a circular cross section at its tip. The conductor 5a of the electric wire is sandwiched between the molds 51 and 52, and is molded into a semicircular shape as shown in FIG. 16a→b. Next, the curling lever 54 is rotated clockwise and lowered, and the molded pin 55 of the curling lever 54 is turned into a semicircular shape.
, press the remaining straight part around the molding piece 53. The conductor 5a is inserted into the molding piece 5 as shown in FIG. 16C.
It is formed into a donut shape with an inner diameter of 3.
This curling unit 50 shapes the conductor 5a of the electric wire, which has been sheathed by the cutting unit 4, as close as necessary.

FIG. 17 shows a pinboard 2 unit, shown at 60 in FIG. 2, which controls each unit of the forming apparatus. Reference numeral 61 designates a pin board on which the pins 62a to 62b can be replaced as desired, and is sent one pitch P at a time in the direction of the arrow by a pulse motor 64. Numerals 63a to 63b are microswitches corresponding to each pin, which close when a pin hits them and generate a signal.

The pulse motor 64 feeds the pin board 61 one pitch at a time corresponding to one process, and opens and closes microswitches corresponding to the cylinders, etc. of each unit. The overall movement of the device is as follows: cutting unit → (curling unit) → feed unit →
One part shown in FIGS. 18 and 19 is completed by bending unit → cutting unit. Since this part is formed into a crank shape, the above-mentioned feed unit ←→bending unit is repeated the same number of times as the bending unit.

In the above embodiment, a sliding stopper/pin board is used to control the movement of the whole and each part, but a programmable sequence controller may also be used.
The setup when changing the feed length of the material to be formed or the order of processing steps can be done in a shorter time. Further, since each unit is driven by a two-stage movement between the members with a ball interposed between the members that slide against each other, the number of driving sources can be reduced.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, it is possible to easily change the molding dimensions, molding direction, and number of times of molding of the material to be molded, which reduces setup time and increases the efficiency of flexible production. can be improved.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the present invention, and FIG. 2 is a front view of an embodiment of the present invention.
Its side view, Figure 3 is an enlarged sectional view of the feed unit, Figure 4 is a plan view of the slide table, and Figure 5 is an enlarged sectional view of the feed unit.
7 are explanatory diagrams showing the operating order of the bending unit, FIG. 8 is an explanatory diagram showing the relationship between the rack and pinion, FIG. 9 is a perspective view showing the relationship between the workpiece and the bending piece, and FIG. FIG. 10 is an enlarged view of the cutting section, FIGS. 11 to 14 are explanatory diagrams showing the order of operation of the cutting unit, FIG. 15 is a partial enlarged view showing the order of operation of the cutting section, and FIG. FIG. 17 is a partially enlarged view showing the operating order of the curling unit.
A plan view of the pinboard, FIG. 18 is a front view of the material to be formed after molding, and FIG. 19 is a side view thereof. 2: Feed unit, 3: Bending unit, 3a: Nozzle, 4: Cutting unit,
16: rotating member, 18: bending piece.

Claims (1)

[Claims] 1. A feed unit that feeds a predetermined amount of a material to be formed;
The bending unit is arranged in front of the feed unit and bends the workpiece fed from the feed unit into a predetermined shape, and the cutting unit cuts the workpiece bent by the bending unit. The unit has a nozzle for leading out the fed material to be formed, and a bending means for pressing and bending the material to be formed protruding from the nozzle, and the bending means is rotatably attached around the nozzle. A forming apparatus comprising: a rotating member; and a bending piece attached to the rotating member so as to be movable in a direction toward and across a passage for the material to be formed protruding from the tip of the nozzle. 2. The feed unit has a feed rate setter that determines the feed rate of the material to be formed, and the bending means has a position setter that determines the rotation stop position of the rotating member. molding processing equipment.