JPH0634030Y2 - Spring forming machine with conveyor - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention is used, for example, when directly supplying a work spring or a torsion spring directly from a molding machine to an automatic assembly line without using a parts feeder or the like. The present invention relates to a spring forming machine with a transfer device.

2. Description of the Related Art Conventional spring forming machines roughly divide long materials (wires, strips) into fixed lengths and intermittently feed them to a molding position, and mold them into a predetermined shape with a mold provided at the molding position. There are a work spring molding machine and a torsion spring molding machine that winds and molds into a predetermined shape with a molding spindle that is hung downward at the molding position.
In each of the molding machines, the molded product is naturally dropped downward and discharged.

Problems to be solved by the invention When the product after molding is naturally dropped downward and discharged,
Entanglement or deformation of the product occurs, which hinders automatic assembly in the next process.

The present invention has been proposed in view of the above problems of the conventional spring forming machine, and an object thereof is to prevent the product from being entangled or deformed, simplify the structure, and ensure accurate and high-speed operation. It is an object of the present invention to provide a possible spring forming machine with a conveying device.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention cuts a long material by a constant length and intermittently feeds it to a molding position, and forms a predetermined shape by a plurality of molds provided at the molding position. A forming machine of a crafted spring to be formed, a swing raising / lowering shaft supported by a machine base near the forming machine so as to be able to swing and move up and down, a first arm fixed to the upper part of the swing raising / lowering shaft, and a swing and lift together with the first arm. And a second arm attached to the swivel lifting shaft so as to be able to move up and down independently of the first arm, a clamp member openably and closably attached to the tip of the first arm, and a clamp member attached to the tip of the second arm. Of the opening / closing control member, an elevating rod which is supported by the machine base so as to be able to ascend and descend in parallel with the swing elevating and lowering shaft, and an elevating and lowering means for reciprocally rotating the swing elevating and lowering shaft. And means for raising and lowering the turning and raising and lowering axis, A clamping means for moving the lifting rod up and down, the revolving means reciprocates the clamp member between above the molding position and the next process position, and at both positions, the clamping member is moved by the lifting means. In addition to moving up and down, the clamp member is opened and closed by the clamping means in connection therewith, and the above three means are operated in association with the molding operation of the molding machine. The present invention is also applicable to a torsion spring forming machine in which a long material is cut into pieces one by one and is intermittently fed to a forming position, and is wound into a predetermined shape by a forming spindle protruding upward to the forming position. Applied to.

The work spring formed by the work machine of the work spring, the clamp member descends and the product is clamped by the lowering of the first arm and the single raising of the second arm immediately after molding by the mold. Immediately, the first arm and the second arm turn up synchronously and turn to reach the next process position, where the first arm and the second arm are lowered or the second arm alone is lowered to release the clamp. Supply the product to the next process.

In the case of the torsion spring forming machine, the conveying device is placed above the forming machine as in the case of the tampering spring forming machine by projecting the forming spindle in the opposite direction, that is, upward, from the conventional vertical structure. Can be provided.

Since the product is conveyed to each of the molding machines for each molding, entanglement and deformation are prevented.

Embodiments FIG. 1 is a side view of the case where the present invention is applied to a wrought spring forming machine, and FIG. 2 is a plan view thereof. In these drawings, the forming machine (1) is The material (2) is supplied from the reel stand (3) through the tension adjuster (4), the material feeding mechanism (5) and the material guide (6) to the pair of molds (7) and (8) at a constant length. The material (2) is molded into a predetermined shape.

As shown in FIGS. 3 and 4, the molds (7) and (8) are fixedly mounted on sliders (10) and (11) horizontally slidably mounted on a machine base (9). This slider (10) (11)
Is a cam (1 that operates in connection with the material (2) feeding operation.
2) By (13), it is possible to move horizontally toward and away from the driven rollers (14) (15), and the spring (16) is always on.
The driven rollers (14) and (15) are pressed against the cams (12) and (13) by (17).

The cams (12) (13) are from the large gear (18) to the small gear (19).
Can be linked via (20).

The material (2) is supplied through the material guide (6) from a direction orthogonal to the moving direction of the molds (7) and (8).

A swivel shaft (21) is installed on the machine base (9) near the molding machine (1). As shown in FIG. 5, the turning vertical shaft (21) has guide cylinders (23) (24) inside a support cylinder (22).
The first arm (25) is fixed to the upper part of the first arm (25), and the second arm (26) is independent of the first arm (25). It can be lifted up and down and is spline-fitted so that the swivel is integrated.

At the tip of the first arm (25), two sets of clamp members (28), (29), (30) and (31) are attached to the pivot (3
2) It is pivotally attached via the (33), (34) and (35) so that it can be opened and closed, and a clamping force is constantly applied in the closing direction by the springs (36) and (37), and these clamping members (28) ( 29) (30)
An opening / closing control member (38) is provided above the (31) so as to be able to move up and down.

The opening / closing control member (38) is fixed to the tip end of the second arm (26) and corresponds to the upper end taper portion of the clamp members (28) (29) (30) (31). ) Is formed and the second arm (26) is in the lowered position with respect to the first arm, the clamp members (28) (29) (30) are resisted against the springs (36) (37). ) (31) is opened, and the clamp members (28) (29) (30) (31) are closed by the springs (36) (37) when in the raised position.

The second arm (26) is moved up and down by an elevator rod (39) shown in FIG. 7, and this elevator rod (39) is placed parallel to the turning elevator shaft (21) on the machine base (9). Guide (40)
It is supported so as to be able to ascend and descend via the, and the positional relationship with the turning up-and-down axis (21) is such that it overlaps in the front-back direction of the paper surface in FIG.

As shown in FIG. 5, the turning lift shaft (21) is reciprocally turned by a turning cam (41) via a swing lever (42), a link (43) and a lever (44). That is, the turning up-and-down axis (2
A lever (44) is fixed to the bottom of 1), and this lever (4
4) is connected to a swing lever (42) by a link (43), and this swing lever (42) is fitted in a cam groove (not shown) of the swing cam (41) to swing back and forth. To do. By this turning cam (41), the clamp member (28) (29) at the tip of the first arm (25) fixed above the turning lifting shaft (21).
(30) (31) above the molding position of the molds (7) and (8) of the molding machine (1) and the spring supply position (6) to the next process conveyor etc.
3) to and from. In addition, in both positions,
A positioning hole (9a) is provided in a part of the machine base (9), and a positioning pin (27) corresponding to the positioning hole (9a) is fixed to the swivel lifting shaft (21). (See FIGS. 2 and 5).

As shown in FIG. 5, a roller (46) is attached to the lower end of the swivel lifting shaft (21) via a swivel seat (45), and this roller (46) is lifted by a lifting cam (47). , It contacts the upper surface of the tip of the lever (48) that swings up and down, and is lifted and lowered. The lever (48) is configured such that the spring (49) causes the driven roller (50) to come into pressure contact with the ascending / descending cam (47), and the swivel elevating shaft (21) causes the roller (46) to move due to the spring (51). The lever (48) is configured to be pressed against the upper surface of the tip.

As shown in FIG. 7, the lower end of the elevating rod (39) is brought into contact with the upper surface of the tip of the lever (53) which swings up and down by the clamp cam (52) via the roller (54) to raise and lower it. To be A spring (56) is stretched so that the lever (53) is pressed against the clamp cam (52) via a driven roller (55) and swings up and down. The elevating rod (39) is configured so that the roller (54) at the lower end is brought into pressure contact with the upper surface of the tip of the lever (53) by the spring (57). Lifting rod (39)
As shown in FIG. 5, the upper end of the upper arm is connected to the second arm (26) at the upper end of the swivel lift shaft (21) through the swivel seat (58), whereby the lift rod (39) is connected. By raising and lowering, the second arm (26) can be raised and lowered independently of the first arm (25). A spring (59) is interposed between the first arm (25) and the second arm (26) to lift the second arm (26).

The turning cam (41), the lifting cam (47), and the clamping cam (52) are, as shown in FIG. 1, provided by a reduction gear motor (60) which is a drive source of the molding machine (1), It is driven via a tuning conduction mechanism (61) such as a timing belt. Material feeding mechanism (5) and mold (7) (8) of molding machine (1)
Is driven by a cam from the motor with reduction gear (60), and FIG. 8 is a timing diagram of each cam.

In FIG. 8, (A) shows the cam curve of the material feeding mechanism (5), (B) and (C) show the cam curves of the molds (7) and (8), and (D) shows the turning cam (41). Shows a cam curve of the lifting cam (47), and (F) shows a cam curve of the clamping cam (52).

The first embodiment of the present invention is constructed as described above, and its operation will be described below.

First, the initial position of each cam is as shown in FIG.
The clamp members (28) (29) (30) (31) are in the unclamped state, and are in the initial stage of starting the return from the next process position to the molding position side. And the molds (7) and (8) are in the separated position,
In this state, the material feeding mechanism (5) feeds the material (2) by a predetermined length by the cam (62). At the end of this feeding, the molds (7) and (8) start the approaching motion, and the material (2) is formed into a predetermined shape. Immediately before the end of this molding, the turning cam (41)
As a result, the clamp members (28) (29) (30) (31) at the tip of the first arm (25) reach the molding position via the turning and lifting shaft (21), and then the lifting cam (47). ), The tip clamp member (28) (29) (30) (31) of the first arm (25) is moved to the mold (7) at the molding position via the turning up-and-down shaft (21).
Lower toward (8). In this descent, the first arm (25) and the second arm (26) are integrally lowered while still in the unclamped state, and immediately before the descent end, the elevating rod (39) is moved by the clamping cam (52). ), The opening / closing control member (38) at the tip of the second arm (26) is independently lifted upward, and the clamp members (28) (29) (30) (31).
Then, the product molded into a predetermined shape is clamped. When this clamp is completed, the first arm (25) and the second arm (26) are raised by the same amount in synchronization with each other by the lifting cam (47) and the clamping cam (52) to lift the product from the molding position. . Shortly before this point, the mold (7)
(8) is, as shown in the cam curves (B) and (C) of FIG.
The retreat separation has started, and the product can be taken out.

As soon as the first arm (25) and the second arm (26) reach the rising end, they are swung by the swivel cam (41) to supply the product to the next process, and this swirl end, that is, the next process ( 63), lift cam (47) and clamp cam (5)
2), the first arm (25) and the second arm (26) descend in synchronization with each other by the same amount, and when the lower end is reached, only the second arm (26) is independently operated by the clamp cam (52). Further lower, clamp members (28) (29) (30) (3
1) Open to release the product clamp. And
Only the first arm (25) is raised and returned by the ascending / descending cam (47), and at this return end, the swiveling cam (41) is swiveled and returned to the molding position to return to the starting state of FIG. In the turning return process from the next process position to the forming position, the first arm (25) is at the rising end and the second arm (26) is at the descending end, so the clamp members (28) (29) (30) ( 31) is
The open / close control member (38) holds the unclamped (open) state, and this state is held until the next product is gripped at the molding position.

After that, the above operation is repeated.

FIG. 9 is a side view showing a second embodiment of the present invention, in which the molding machine (1) is a torsion spring molding machine, and the clamp members (28) (29) (30) (31) are also The configuration is the same as that of the above-described first embodiment except that the torsion spring is slightly changed for gripping. That is, the molding machine (1) in this case is
As shown in FIG. 10 or FIG. 11, the forming spindle (1a) arranged so as to project upward at the forming position repeats the operation of rotating a certain amount in a certain direction and moving up or down by a certain amount.
As shown in FIG. 10, the spindle (1a) has a split groove (1d) at the upper end, and the raw material (2) is sandwiched in the split groove (1d) to rotate and rise to a predetermined torsion spring. Or having a large diameter step (1b) at the bottom as shown in FIG.
The protrusion (1c) is eccentrically provided on the step (1b), and the starting end of the material (2) is rotated and lowered while being held by the spindle (1a) and the protrusion (1c), thereby forming a predetermined shape. The torsion spring is formed. The clamp members (28), (29), (30) and (31) may be operated in the same manner as in the first embodiment in association with this molding operation.

In both of the above-mentioned embodiments, the case where the cam mechanism is used as the turning means, the raising and lowering means and the clamping means is excited, but the invention is not limited to this, and an electric actuator or a fluid pressure actuator may be used instead or in combination. The operation may be performed in association with the molding operation of the molding machine.

Effect of the Invention Since the present invention is configured as described above, it has the following effects.

In the spring forming machine with a conveying device according to claim (1), various crafted springs can be gripped for each molding and conveyed to the next step, and automatic assembly can be immediately performed to prevent entanglement and deformation of the spring. .

In the spring forming machine with a conveying device according to claim (2), the torsion spring can be gripped for each molding and conveyed to the next step, which allows automatic assembly immediately and prevents entanglement and deformation of the spring.

In the spring forming machine with a conveying device according to claim (3), the operation of each part can be accurately matched with the operation of the forming machine by the cam, and the structure can be simplified and high speed operation can be achieved.

[Brief description of drawings]

FIG. 1 is an overall side view showing a first embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is an enlarged plan view of a molding machine portion of FIG. 1, and FIG. 4 is FIG. 5 is a partially cutaway side view of FIG. 5, FIG. 5 is an enlarged vertical side view of the conveying device portion of FIG. 1, FIG. 6 is an enlarged side view of the clamp member portion of FIG. 5, and FIG. 7 is associated with FIG. FIG. 8 is an enlarged vertical side view of the clamping means, FIG. 8 is a timing diagram of a cam curve for making the respective parts perform related operations, and FIG. 9 is an overall side view showing the second embodiment of the present invention.
FIG. 11 is a perspective view for explaining a different embodiment of the forming spindle of FIG. (1) …… Molding machine, (1a) …… Molding spindle, (2) …… Material, (3) …… Reel stand, (4) …… Pressure adjusting machine, (5) …… Material feed mechanism, ( 6) …… Material guide, (7) (8) …… Mold, (9) …… Machine stand, (21) …… Swivel lifting axis, (25) …… First arm, (26) …… First 2 arms, (28) (29) (30) (31) …… Clamping member, (38) …… Opening / closing control member, (39) …… Elevating rod, (41) …… Swivel cam, (47)… … Elevation cam, (52) …… Clamping cam, (60) …… Reducer motor, (61) …… Tuning transmission mechanism.

Claims (3)

[Scope of utility model registration request] 1. A molding machine for a work spring, which cuts a long material by a predetermined length and intermittently feeds it to a molding position, and molds it into a predetermined shape by a plurality of molds provided at the molding position, and the vicinity of the molding machine. The swivel lifting shaft supported by the machine base so that it can swivel and ascend and descend, the first arm fixed to the upper part of the swivel lifting shaft, swivel and hoist with the first arm, and can be lifted independently of the first arm A second arm attached to the swivel lifting shaft, a clamp member attached to the tip of the first arm so as to be openable and closable, an opening / closing control member for the clamp member mounted to the tip of the second arm, and parallel to the swivel lifting shaft. An elevating rod which is supported on the machine base so as to be able to elevate and lower, and elevates and lowers the second arm independently of the first arm; a swivel means for reciprocally swiveling the swivel elevator shaft; Equipped with clamp means for raising and lowering the lifting rod. , The revolving means reciprocates the clamp member between above the molding position and the next process position, and at both positions, the elevating means elevates and lowers the clamp member, and in connection therewith, the clamp means According to the above, the spring forming machine with a conveying device is characterized in that the clamp member is opened and closed, and the above three means are operated in association with the forming operation of the forming machine. 2. A torsion spring molding machine for cutting a long material into a predetermined length by intermittently feeding it to a molding position and winding the material into a predetermined shape by a molding spindle projecting upward at the molding position. A swivel lift shaft supported to a machine base near the machine so that it can swivel and ascend and descend, a first arm fixed to the upper part of the swivel lift shaft, swivel and lift with the first arm, and independent of the first arm. A second arm attached to the swivel lifting shaft so that it can be lifted up and down, a clamp member that is openably and closably attached to the tip of the first arm, an opening / closing control member for the clamp member that is attached to the tip of the second arm, and a swivel lift shaft An elevating rod that is supported in parallel to the machine base in parallel and can elevate and lower, and an elevating rod that elevates and lowers the second arm independently of the first arm, a revolving means that reciprocally revolves a reciprocating and elevating shaft, and a elevating and lowering device that elevates and lowers the revolving and elevating shaft. Means and hoisting rods The clamping member is reciprocated between the upper position of the molding position and the next process position by the pivoting device, and the clamping member is moved up and down by the elevating device at both positions. A spring forming machine with a conveying device, characterized in that the clamping means is used to open and close the clamp member to operate the three means in association with the forming operation of the forming machine. 3. The turning mechanism, the raising and lowering mechanism and the clamping mechanism are constituted by a cam mechanism which is driven by the same driving source as the molding machine. A spring forming machine with a conveying device as described.