TWI636838B - Apparatus for multi-action forging - Google Patents

Abstract

A double-motion forming device includes a base, an upper die unit, a lower die unit, and a holding unit. The upper mold unit includes an upper table and at least one upper forming module. The at least one upper forming module includes an upper die kernel and an upper punch. The lower die unit includes a lower table and at least a lower forming module. The at least one forming module includes a die core and a punch. The lower die can move up and down relative to the lower punch. The holding unit includes a power source, a forming die pad, and a plurality of push rods projecting upward from the forming die pad and used to push the lower die kernel. The structure of the double-acting forming device is simple, and the push rods apply thrust to the lower die core by means of pushing, without relative friction or slip, so the wear of the components can be reduced and the durability can be improved, and Due to the absence of complex structural elements, the available space is increased, and products with more diverse sizes can be formed, and the multi-pass complex forming process can be carried out at the same time, and the production efficiency is greatly improved.

Description

Double-motion forming device

The invention relates to a forging die, in particular to a double-motion forming device.

Forging is a forming technology that has high material utilization and can reduce additional processing steps. A general forging die includes a lower die with a die cavity and an upper die with a punch corresponding to the die cavity. When forming by forging, the blank is first placed in the cavity, and then the upper die is driven to move down, so that the punch extends into the cavity and squeezes the blank. The squeezed blank will Start to flow and fill the cavity, and then form a workpiece corresponding to the shape of the cavity. However, this forging die can only use the punch to apply unidirectional force to the blank, which is affected by the unilateral forming flow, which is likely to cause uneven material flow filling and thus affect the dimensional accuracy of the formed workpiece.

In order to overcome the aforementioned problems, the development of double-action forming technology has begun. Referring to FIGS. 1 and 2, a general double-action forming die includes an upper die base 11 having an upper punch 110 and a pair of upper punches. The lower mold base 12 of the mold cavity 120 of the head 110, two push rods 13 extending downward from the upper mold base 11 at intervals from each other, two connecting rods 14, two which are pivotally provided at the bottom ends of the push rods 13, respectively A sliding block 15 that laterally slides and pivotally connects the connecting rods 14 respectively with an inclined surface 150, and a floating block with two sliding surfaces 160 respectively corresponding to the inclined surfaces 150 and located below the lower die base 12 16, and a lower punch 17 extending upward from the slider 16 and passing through the lower die base 12. When forming by forging, the blank is placed in the cavity 120 of the lower die base 12 first, and then the upper die base 11 and the upper punch 110 are driven to move downward toward the die cavity 120, and the upper die base 11 It will drive the push rods 13 to move down together, and then push the sliding blocks 15 through the connecting rods 14 to move laterally toward each other. When the sliding blocks 15 move toward each other, the inclined surfaces 150 will push The sliding surfaces 160 of the slider 16 cause the sliding 15 to be pushed upwards, which in turn drives the lower punch 17 to extend upward into the die cavity 120, so that the blank can be received by the upper punch 110 and the The two-way extrusion of the lower punch 17 allows the blank material to be evenly squeezed and filled in the cavity 120, thereby improving the dimensional accuracy of the finished product.

However, the multiple-motion forming mold needs to be provided with a plurality of movable elements, and involves multi-directional pushing, resulting in complicated configuration and difficult installation, and the contact sliding between the inclined surfaces 150 and the sliding surfaces 160 is also easy As a result of the wear of the sliding blocks 15 and the floating block 16, the components often need to be replaced.

Therefore, the object of the present invention is to provide a double-action forming device with a simple structure and not easy to wear.

Therefore, the double-motion forming device of the present invention includes a base, an upper mold unit, a lower mold unit, and a holding unit disposed in the base.

The upper mold unit includes an upper table that can be driven to reciprocate in the height direction, and at least one upper forming module disposed below the upper table. The at least one upper forming module includes an upper mold core disposed on the bottom surface of the upper table and defining an upper mold cavity, and a bottom mold penetrating the at least one upper mold core from the upper table and extending on the upper mold The upper punch in the hole.

The lower mold unit includes a lower table fixed in the base, and at least one lower forming module located above the lower table. The at least one lower forming module includes a lower die kernel defining a pair of lower die holes corresponding to the upper die cavity, and a lower punch penetrating the lower die kernel upward from the lower table and extending into the lower die cavity . The lower die can move up and down relative to the lower punch.

The pressure-holding unit includes a power source, a forming die pad arranged on the power source and driven by the power source to reciprocate in the height direction, and a plurality of forming die pads projecting upward from the forming die pad and passing through the lower table And is used to push the push rod of the die under the at least one forming module.

The effect of the present invention is that the lower die core is pushed up by the push rods to maintain the closed mold state, and during the downward movement of the upper table, the lower punch is kept fixed so that the upper punch and the lower punch The head moves relative to the blank to achieve the effect of double-motion forming. The structure of the double-motion forming device is simple without too many moving elements or multi-directional pushing, plus these push rods are pushed through the top It applies thrust to the lower mold core without relative friction or slip, so it can reduce the wear of the components and improve the durability. And because there are no complex structural components, the available space is increased, and more diverse sizes can be formed. Products, and achieve multi-pass compounding process simultaneously, greatly improving production efficiency.

Referring to FIG. 3, an embodiment of the compound forming apparatus of the present invention includes a base 2, an upper mold unit 3 disposed in the base 2, and an upper mold unit disposed in the base 2 and located in the upper mold unit 3 The lower die unit 4 below, and a holding unit 5 disposed in the base 2 and located below the lower die unit 4.

The upper mold unit 3 includes a driver 31 disposed in the base 2, a slider 32 connected to the bottom end of the driver 31 on the top surface, an upper table 33 connected to the bottom surface of the slider 32, and a connected upper table 33 The upper forming module 34 on the bottom surface, and a servo module 35 that controls the output stroke of the driver 31. The upper forming module 34 has an upper mold core 342 defining an upper mold cavity 341, and an upper punch extending downwardly through the upper mold core 342 from the upper table 33 and extending into the upper mold cavity 341 Head 343.

The lower mold unit 4 includes a lower table 41 fixed in the base 2 and a lower forming module 42 located on the lower table 41. The lower forming module 42 has a lower mold core 422 defining a pair of lower mold holes 421 corresponding to the upper mold cavity 341, and a lower mold core 422 passing through the lower mold core 422 upward and extending to the lower mold The lower punch 423 of the cavity 421 and the lower die core 422 can move up and down relative to the lower punch 423.

The holding unit 5 includes a power source 51, a forming die pad 52 disposed on the power source 51, and two projecting die pads 52 projecting upward through the lower table 41, and used to push the The push rod 53 of the mold core 422 under the forming module.

The forming process of this embodiment is described below. Referring to FIGS. 4, 5 and 6, first place the blank 6 as shown in FIG. 4 in the cavity 421 under the lower mold core 422 and then control the driver 31 The slider 32 drives the upper table 33 to move down in the height direction until the upper mold core 342 is pressed down against the lower mold core 422 as shown in FIG. 5, and the upper mold core 342 and the lower mold The ren 422 is closed for mold clamping. At this time, the blank 6 is located in the closed space defined by the upper mold cavity 341 and the lower mold cavity 421. The power source 51 of the holding unit 5 will continue to drive the forming die pad 52, so that the push rods 53 push the lower die core 422 upward as shown in FIG. 6, and then the upper die core 342 and the lower die core 422 is in closed mode.

Referring to FIG. 7, FIG. 8 and FIG. 9, the driver 31 continuously drives the slider 32 to move downwards, because the upper die core 342 will continue to press down against the lower die core 422, and the lower punch 423 is Maintain a fixed state, so the blank 6 in the upper die cavity 341 and the lower die cavity 421 will also move downward and be pushed by the lower punch 423, so the blank 6 is simultaneously subjected to the upper punch The downward pressure of the head 343 and the pushing force of the lower punch 423 enable the blank 6 to be filled into the upper die cavity 341 and the lower die cavity 421 more uniformly. After the forming is completed, as shown in FIG. 8, the drive 31 is used to move the upper table 33 away from the lower mold unit 4, and then the power source 51 is controlled to drive the push rods 53 to push up the lower mold core 422 , The relative displacement between the lower die core 422 and the lower punch 423 is generated, and finally the lower die core 422 pushes the finished product in the lower die cavity 421 upward as shown in FIG. 9 to complete the demolding action.

This embodiment does not have too many moving elements or multi-directional displacements. The configuration is simple and the installation is easy. The push rods 53 push the lower mold core 422 by pushing, so there is no friction due to relative sliding. It causes component wear, and because there are no complicated structural components, the available space is increased, products with more diverse sizes can be formed, and multiple simultaneous forming processes with multiple passes can be achieved simultaneously, and the production efficiency is greatly improved. Referring to FIG. 10, it should be noted that the upper mold unit 3 may also include a plurality of upper forming modules 34 as shown in FIG. 10, and the upper mold cores 342 are spaced apart on the upper table 33 in the lateral direction The bottom surface, and the lower mold unit 4 includes a plurality of lower molding modules 42 having the same number as the upper molding modules 34 and corresponding up and down. This configuration can form multiple blanks 6 at a time, which can improve the forming efficiency.

3 and FIG. 11, in addition, the servo module 35 can control the output stroke of the drive 31 and the power source 51, as shown in FIG. 11, can be controlled according to processing requirements and material properties of the blank 6 The individual and relative movement between the punch 343 and the lower punch 423 can improve the machining accuracy

In summary, the configuration of this embodiment is simple, which is conducive to miniaturization and cost reduction, and can reduce the wear of components, and because there are no complicated structural components, the available space is increased, and products with more diverse sizes can be formed. And to achieve simultaneous multi-pass forming process, the production efficiency is greatly improved, so it can indeed achieve the purpose of cost invention.

However, the above are only examples of the present invention, and should not be used to limit the scope of implementation of the present invention, any simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the contents of the patent specification are still Within the scope of the invention patent.

2‧‧‧Dock

3‧‧‧ Upper mold unit

31‧‧‧Drive

32‧‧‧slider

33‧‧‧ on the table

34‧‧‧Up forming module

341‧‧‧ Upper mold cavity

342‧‧‧ Shangmoren

343‧‧‧Punch

35‧‧‧Servo module

4‧‧‧Lower die unit

41‧‧‧Under table

42‧‧‧Lower forming module

421‧‧‧Lower mold cavity

422‧‧‧Xiamoren

423‧‧‧lower punch

5‧‧‧Pressure unit

51‧‧‧Power source

52‧‧‧Forming die pad

53‧‧‧Putter

6‧‧‧ embryo

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIGS. 1 and 2 are cross-sectional views illustrating a conventional double-action forming mold; FIG. 3 is a cross-sectional view illustrating One embodiment of the compounding forming device of the present invention; FIGS. 4 to 9 are cross-sectional views illustrating the forming process of this embodiment; FIG. 10 is a cross-sectional view illustrating another aspect of this embodiment; and FIG. 11 is a The graph shows that this embodiment can separately control the output stroke of a driver and a power source.

Claims (6)

A double-motion forming device includes: a base; an upper mold unit, including an upper table that can be driven to reciprocate in a height direction, and at least one upper forming module disposed below the upper table, the at least An upper forming module includes an upper mold core disposed on the bottom surface of the upper table and defining an upper mold cavity, and a bottom mold penetrating the at least one upper mold core from the upper table and extending into the upper mold cavity Upper punch; lower die unit, including a lower table fixed in the base, and at least one lower forming module located above the lower table, the at least one lower forming module includes a pair defining an upper die A lower die core of the lower die cavity of the cavity, and a lower punch penetrating the lower die core upward from the lower table and extending into the lower die cavity, the lower die core can move up and down relative to the lower punch; And a pressure-holding unit, disposed in the base, including a power source, a forming die pad disposed on the power source and driven by the power source to reciprocate in a height direction, and a plurality of forming die pads Protruding upward and passing through the lower table, and used to push the at least one Mold core push rod under the molding module. The double-acting forming device according to claim 1, further comprising a driver disposed in the base and used to drive the upper table. The double-acting forming device according to claim 2, wherein the upper die unit further includes a slider connected to the driver on the top surface and connected to the upper table on the bottom surface. The double-acting forming device according to claim 1, wherein the upper mold unit includes only an upper forming module, and the lower mold unit includes only a lower forming module. The complex dynamic forming apparatus according to claim 1, wherein the upper mold unit includes a plurality of upper forming modules, and the lower mold unit includes a plurality of lower forming modules. The double-action forming device according to claim 2, wherein the upper die unit further includes a servo module for controlling the output stroke of the driver and the output stroke of the power source of the holding unit.