CN101513658B - One-time forming mold for commutator hook - Google Patents

Abstract

The invention discloses a commutator hook one-time forming mold, which comprises upper and lower mold frames (4, 9), and is characterized in that: a concave-convex mold (11) is installed on the lower mold frame (9), and the The punch (12) and die (13) corresponding to the concave-convex die (11) are installed on the upper die frame (4), the die (13) is fixedly connected with the described upper die frame (4), and the punch ( 12) It is movably arranged in the die, and the punch (12) is mutually locked with the die (13) through a punch locking device, and a punch return device is provided above the punch (12). The invention can realize the forming of the hook of the commutator at one time, improve the production efficiency, reduce the production cost and reduce the reject rate.

Description

One-time forming mold for commutator hook

【Technical field】

The invention relates to a stamping die, in particular to an improved invention of a commutator hook primary forming die.

【Background technique】

At present, the forming of commutator hooks is generally divided into three to four processes. Each process requires a set of molds, and each set of molds needs to be equipped with a punching machine. Each mold must be operated by a corresponding operator, resulting in equipment occupation. , wastes resources and time, greatly hinders production efficiency, increases production cost, and because the commutator hook is formed through multiple molds, the accumulation of multiple tolerances makes the tolerance of the product larger, and it is easy to produce scrap, resulting in a lower scrap rate improve.

【Content of invention】

In view of the problems existing in the current known technology, the technical problem to be solved by the present invention is to provide a commutator hook one-time forming mold, which can realize the one-time forming of the commutator hook, improve production efficiency, reduce production cost, and reduce waste products Rate.

In order to solve the problems of the technologies described above, the present invention is accomplished by taking the following technical solutions:

A commutator hook one-time molding die, including upper and lower mold frames, characterized in that: a concave-convex mold is installed on the lower mold frame, and a punch corresponding to the concave-convex mold is installed on the upper mold frame. The die is fixedly connected with the upper die frame, the punch is movably arranged in the die, the punch is locked with the die through a punch locking device, and a punch return device is arranged above the punch. A die mounting plate is provided between the upper die frame and the die, and a transverse hole and a longitudinal hole are arranged on the die mounting plate, and each set of transverse holes and longitudinal holes are partially staggered, and the punch locking device includes a punch The locking block, the locking block spring and the punch locking lever, the punch locking block and the locking block spring are set in the transverse hole of the die mounting plate, and the punch locking block leans against the upper edge of the punch under the action of the locking block spring to make the convex die The mold and the die are locked to each other, the punch lock block is provided with a gap, the punch lock lever is movably set in the longitudinal hole of the die mounting plate, and its lower end is fixed on the mount plate of the die, and the die is installed through the die The plate is fixed on the lower mold frame, and the punch lock bar passes through the gap of the punch lock block to lock the punch lock block, and the middle of the punch lock bar has a diameter-reducing part. The punch returning device includes a punching rod, which is arranged above the punch, and whose upper end stretches out from the upper die frame.

In the commutator hook forming mold of the present invention, firstly, the upper mold base moves downward, and the punch and the concave part of the concave and convex mold together preform the commutator hook, so that the commutator hook and the axis of the commutator At an angle of 90 degrees, the punch is locked by the punch locking device and is tightly connected with the die. When the upper mold frame continues to move downward, the punch locking device releases the punch, and the punch and die There is a relative movement between the dies up and down, so that the die continues to go down when the die does not move, so the die and the punch part of the die and the die form the commutator completely, thus realizing the commutator. The hook is molded in one mold at one time, which improves the production efficiency, reduces the production cost and reduces the scrap rate. Therefore, compared with the prior art, the technical solution has outstanding substantive features and remarkable progress.

【Description of drawings】

The present invention has following accompanying drawing:

Figure 1 is the appearance of the product before the commutator hook is formed

Figure 2 is the appearance of the commutator hook after forming

Fig. 3 is a structural representation of the present invention

Figure 4 is the A-A view of Figure 2

【Detailed ways】

The accompanying drawings show the technical solution of the present invention and its embodiments, and the relevant details and working principles of the embodiments will be further described below in conjunction with the accompanying drawings.

Accompanying drawing 1 and 2 have respectively represented the product appearance diagram before and after forming of the commutator crotch, with reference to accompanying drawing 3, this commutator crotch once forming mold comprises upper mold frame 4, lower mold frame 9, concave-convex mold 11, Punch 12, concave mold 13, punch locking device and punch return device, concave and convex mold 11 is fixed on the lower mold frame 9 through the concave and convex mold mounting plate 8, and the concave and convex mold 11 is provided with a commutator positioning block 10, the upper The mold base 4 is provided with a punch 12 and a die 13 corresponding to the concave and convex die 11, the die 13 is fixed on the upper mold base 4 through the die mounting plate 5, the punch 12 is movably arranged in the die 13, and the die The mounting plate 5 has a cavity 3 that can accommodate the punch 12 to move up and down. Referring to accompanying drawing 4, the die mounting plate 5 is also provided with three groups of transverse holes and longitudinal holes uniformly distributed on the circumference, and the transverse holes and the longitudinal holes are perpendicular to each other and parallel to each other. Partially staggered, the punch locking device includes a punch lock block 14, a lock block spring 15 and a punch lock lever 7, the punch lock block 14 is movably arranged in the transverse hole of the die mounting plate 5, and its inner end It is exposed to the cavity 3 of the die mounting plate 5, the outer end is in contact with the lock block spring 15, and the inner end of the punch lock block 14 is pressed against the upper edge of the punch 12 under the action of the lock block spring 15 to make the punch 12 and the die 13 are mutually locked, the adjusting screw 16 is used to adjust the tightness of the lock block spring 15, the punch lock block 14 is provided with a gap 17, and the punch lock lever 7 is movably arranged in the longitudinal hole of the die mounting plate 5 , its lower end is fixed on the concave-convex mold mounting plate 8, the convex mold locking lever 7 passes through the breach 17 of the convex mold locking block 14, and its outer circle locks the convex mold locking block 14 (to prevent the convex mold locking block from being placed on the concave mold mounting plate 5 to move in the transverse hole, so that the punch 12 and the die 13 are mutually locked), and there is a diameter-reducing part 6 in the middle of the punch lock lever 7 (when the punch 12 and the die part of the die 11 are replaced together) When the hook of the guide is preformed in place, the upper part of the reduced-diameter part 6 will enter the gap 17 of the punch lock block 14, and at this time, the punch lock block 14 can be retracted into the transverse hole of the die mounting plate 5 under the action of external force , and when the punch 12 is not locked by the punch lock block 14, there will be relative movement up and down between the punch 12 and the die 13, so that when the punch 12 does not move, the die 13 will go down further. Move and the punch part of the concave-convex mold 11 to make the commutator fully formed), the punch return device includes a punching rod 1, the punching rod 1 is arranged above the punch 12, and its upper end is vacantly sleeved on the upper die The mold handle of frame 4 is exposed to the inside of the mold handle, and a stopper (not shown) that is fixedly connected with the punch press is also provided on the top of the punching rod 1. Spring 2 is arranged, and spring 2 can guarantee that punch 12 is in the locking situation of breaking away from punch lock block 14, makes punch 12 downward all the time, can not produce rocking.

When the commutator hook molding die is working, the unformed commutator product of the crotch is placed on the commutator positioning block 10, the unformed crotch faces upward, and then the punch pushes the upper die frame 4 to move downward, Before the punch 12 contacts the unformed hook of the commutator, the outer circle of the punch lock lever 7 is located in the gap 17 of the punch lock block 14 to lock the punch lock block, and the punch lock block leans against the punch , the punch and the die are locked to each other. When the upper die frame continues downward, the punch 12 will preform the commutator hook together with the die part of the concave and convex die 11, so that the commutator hook and the commutator The axis is at an angle of 90 degrees. When the commutator hook is preformed in place, the upper end of the reduced diameter part 6 of the punch lock rod 7 enters the position of the gap 17 of the punch lock block 14. Under the action of the radial force of the die 12, it retracts into the transverse hole of the die mounting plate 5, so that the punch and die can move up and down relative to each other. When the die 12 does not move, the die 13 is further lowered. Move it together with the convex mold part of the concave and convex mold 11 to make the commutator fully formed. After the commutator hook is completely formed, the punch head of the punch press drives the upper mold frame upward, and at the same time, the punching rod 1 moves upward and hits the stopper. The mold continues upward, so the punch returns under the pressure of the punching rod 1, the punch 12 is locked again by the punch lock block 14, and then the formed commutator product is taken out to form the next commutator product .

Claims (3)

1. A commutator crotch forming mold once, comprises upper and lower mold frame (4,9), it is characterized in that: concave-convex mold (11) is installed on the described lower mold frame (9), described upper mold The punch (12) and die (13) corresponding to the die (11) are installed on the frame (4), the die (13) is fixedly connected with the upper die frame (4), and the punch (12) The activity is arranged in the die, and the punch (12) is mutually locked with the die (13) by the punch locking device, and the top of the punch (12) is provided with a punch return device. 2. The commutator crotch hook molding die as claimed in claim 1, characterized in that: a die mounting plate (5) is provided between the upper die frame (4) and the die (13), and the die mounts The mounting plate (5) is provided with transverse holes and longitudinal holes, each group of transverse holes and longitudinal holes are partially staggered, and the punch locking device includes a punch lock block (14), a lock block spring (15) and a punch lock The rod (7), the punch lock block (14) and the lock block spring (15) are arranged in the transverse hole of the die mounting plate (5), and the punch lock block (14) pushes up under the action of the lock block spring (15). Lean against the upper edge of the punch (12) to lock the punch (12) and the die (13) to each other, the punch lock block (14) is provided with a gap (17), and the punch lock lever (7) is movable In the longitudinal hole of the concave-convex mold mounting plate (5), its lower end is fixed on the concave-convex mold mounting plate (8), and the concave-convex mold (11) is fixed on the lower mold frame (9) through the concave-convex mold mounting plate (8). The locking rod (7) passes through the notch (17) of the male die locking block (14) to lock the male die locking block (14), and the middle of the male die locking rod (7) has a reduced diameter portion (6). 3. The commutator hook primary forming mold according to claim 2, characterized in that: the punch return device includes a driving rod (1), and the driving rod (1) is arranged on the punch (12) The top, its upper end stretches out upper formwork (4).

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