TW201433375A - Stamping die with punch guiding unit - Google Patents

Abstract

The present invention provides a stamping die with punch guiding unit, which comprises an upper die assembly, a lower die assembly and a punch guiding unit. The stamping die is configured on a stamping machine including a platform. The punch guiding unit comprises a pivot, a guide block, a punching pin and a press-driving portion. The pivot is pivoted on one of the upper die assembly, the lower die assembly or the platform, so as to make the guide block pivoting between a still position and a punching position. Furthermore, the guide block comprises a first end and a towing portion. When one of the upper die assembly, the lower die assembly or the platform is pushed to actuate the press-driving portion, the first end of the guide block will be pivoted therewith, and the towing portion and the first end will be pivoted at a constant angular velocity to actuate the punching pin, so as to achieve the effect of stamping in different direction or multi-sequence stamping.

Description

Stamping die with guiding impact unit

The present invention relates to a stamping die, and more particularly to a stamping die having a guiding impact unit.

Stamping is a metalworking method that slams a workpiece, cuts, bends, or shapes it into the finished shape or size specified by the mold. The machine tool used for stamping is called a punch press, and the mold used is called a stamping die. Nowadays, products with repeatability, high precision and uniform specifications can be punched out. The products that are stamped and formed include the body, chassis, fuel tank, radiator plate of the automobile, the drum of the boiler, the metal casing, the steel piece of the motor and the electric appliance, etc., and the smaller ones can also manufacture surface-mounted circuit components.

As shown in Fig. 10, the conventional stamping is generally composed of upper molds 91 and lower molds 92 which correspond to each other. The upper mold 91 is provided with a molding punch 911 and a pressing punch 912; the lower mold 92 is disposed corresponding to the upper mold 91, and includes a molding slider 921 that can slide a certain distance to the left and right. When the mold is closed, the upper mold 91 moves downward, and the pressing punch 912 pushes the chamfered surface 9210 of the forming slider 921, so that the forming slider 921 slides to the right side to the side where the product needs to be punched, and is stamped by the forming punch 911. The product 90 needs to be stamped on the upper surface to complete the stamping forming operation simultaneously; when the mold is opened, the upper mold 91 moves upward, and the forming punch 911 and the pressing punch 912 are moved upward, and the forming slider 921 is returned to the original position, and finally Form the desired product.

However, such conventional stamping methods have their limitations and are limited by the inclined beveled knots. The double punching action must be perpendicular to each other, one set is punched in the up and down direction, and the other set must be punched in the left and right direction without room for change; on the other hand, the double punching must be operated synchronously, once in place, cannot wait for example After the group is pressed down, the left and right stamping is performed. That is to say, there is a sequential double stamping, which must be completed by two sets of machines or by changing the mold on the same machine. In this way, the process will be complicated and the output efficiency will be reduced. In particular, there will be a positioning problem between the two operations. Once the feeding and positioning accuracy are slightly deviated, the previous punching position and the second punching position will be offset. Significantly reduce product yields, resulting in a sharp increase in manufacturing costs.

Further, since the products produced in the conventional molds are all uniform specifications, especially for such double-punched products, even if the structure of the product is slightly changed, for example, the position of the perforation is shifted by three centimeters to the right, another set of stamping dies is needed, not to mention Double-stamped molds are more expensive to manufacture and must be redesigned and purchased with another set of stamping dies, which undoubtedly increases costs significantly.

Of course, there are already multi-axis punching machines, but because of the set of multiple punching arms, the cost and price of the machine are far higher than the traditional single-axis punching machines, and the traditional processing industry can't afford it. Therefore, in order to simplify the process, improve the output efficiency and product yield, the structural design of the stamping die becomes an important issue. At present, the industry is striving to develop various types of composite mold structures, and strives to design a suitable stamping die. It hopes to obtain high-performance and high-quality product output under the premise of minimum cost to solve the problem of traditional stamping die.

In view of this, the present invention particularly proposes a stamping die having a multi-directional or segmented stamping function. Not only can the function of multiple or segmental stamping be achieved in the same mold; it can also be fine-tuned according to the subsequent product specifications or construction, and with the technical features of the invention, multiple stamping can be performed in multiple directions without having to replace the entire group Stamping die. In summary, the present invention provides a An improved stamping die, in which a set of guiding impact units are placed in the mold to withstand the primary movement in the up and down direction, thereby providing secondary movements that change direction or timing, thereby enabling the simplest single-axis punching machine In the above, multi-stage or multi-directional stamping not only simplifies the process, but also improves product yield and output efficiency to achieve maximum economic benefits.

SUMMARY OF THE INVENTION One object of the present invention is to provide a stamping die having a guide impact unit that can perform multiple stampings of multiple angles or timings in a single pass, thereby simplifying the process.

Another object of the present invention is to provide a stamping die having a guiding impact unit, which can complete the effect of multiple stamping in a single operation and improve the output efficiency.

Another object of the present invention is to provide a stamping die having a guiding impact unit, which can complete the effect of multiple stamping in a single operation, reduce unnecessary positioning problems, and improve product yield.

Still another object of the present invention is to provide a stamping die having a guiding impact unit, which can design a guiding impact unit in the mold as an adjustable pattern, so that a single die can manufacture a plurality of specifications, reduce the cost of the mold, and improve the manufacturing flexibility.

The invention discloses a stamping die with a guiding impact unit which is arranged on a punching machine table further comprising a base for punching a workpiece to be processed. The stamping die includes a lower die assembly having a lower die body; an upper die assembly having an upper die body corresponding to the lower die body; and at least one of the upper die body and the lower die body, Providing relative movement between a relatively remote starting position and a relatively close stamping position; and at least one guiding impact unit comprising: a pivoting member of the upper mold assembly, the lower mold assembly Or one of the bases, a guide block for pivoting between a rest position and an impact position; The guiding block has a first end portion and a pulling portion, and the connecting line of the first end portion to the pivot shaft is at an angle with the connecting portion of the traction portion to the pivot shaft; one is actuated by the traction portion And the at least one guiding impact unit comprises: when the upper mold body and the lower mold body are relatively close to the punching position from the starting position, by one of the upper mold body, the lower mold body or the base The pressurized driving portion that pivots the first end of the guiding block is actuated, and the pulling portion and the first end portion are pivoted at an equal angular velocity to actuate the punch.

Based on the above, the stamping die with the guiding impact unit of the present invention can perform multi-directional or multi-stage sequential punching by the single-axis punching machine, which not only saves the process, reduces the mold cost, but also reduces the alignment. Inaccurate risk, greatly improve product yield and output efficiency; can also produce guide position impact unit with adjustable position, so that it is feasible to manufacture a variety of similar products with a single die, without the need to replace the entire set of stamping dies, greatly By expanding the scope of use of stamping products, the cost can be effectively controlled, and the output can be further improved to achieve all of the above objectives.

1‧‧‧ Stamping machine

10‧‧‧Pressing die

11, 11' ‧ ‧ upper mold components

111, 111’, 111” ‧‧‧Upper Form Body

112‧‧‧ Guide hole

113‧‧‧Return parts

12‧‧‧Down module

121, 121’, 121”‧‧‧

122‧‧‧ Guide column

13, 13', 13" ‧ ‧ guided impact unit

131, 131’, 131”‧‧‧ lead blocks

1311, 1311’, 1311” ‧ ‧ first end

1312, 1312’‧‧‧ Traction Department

1313‧‧‧ accommodating holes

132, 132’, 132”‧‧‧ punches

133, 133', 133" ‧ ‧ pressure drive department

134, 134', 134" ‧ ‧ pivot

135"‧‧‧Transmission parts

20, 20’ ‧ ‧ pedestal

90‧‧‧Products

91‧‧‧上模

911‧‧‧Forming punch

912‧‧‧ Pushing punches

92‧‧‧Down

921‧‧‧Shaping slider

9210‧‧‧Cross section

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view showing a first preferred embodiment of a stamping die of the present invention.

Fig. 2 is a schematic view showing the mold clamping of the first preferred embodiment of the stamping die of the present invention.

Fig. 3 is a schematic view showing the opening of the first preferred embodiment of the stamping die of the present invention.

4 is an enlarged schematic view of the guide impact unit of FIGS. 1 to 3.

Figure 5 is a cross-sectional view showing a second preferred embodiment of the stamping die of the present invention.

Fig. 6 is a schematic view showing the clamping of a second preferred embodiment of the stamping die of the present invention.

Figure 7 is a cross-sectional view showing a third preferred embodiment of the stamping die of the present invention.

Fig. 8 is a schematic view showing the start of clamping of a third preferred embodiment of the stamping die of the present invention.

Fig. 9 is a schematic view showing the completion of the clamping of the third preferred embodiment of the stamping die of the present invention.

The foregoing and other objects, features, and advantages of the invention are set forth in the <RTIgt;

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view showing a first preferred embodiment of a stamping die of the present invention. The stamping die 10 is disposed on the press table 1 in the same manner as the prior art, and the press table 1 further includes a base 20. The stamping die 10 mainly includes an upper die assembly 11, a lower die assembly 12, and a guide impact unit 13. In the embodiment, the upper mold assembly 11 further includes an upper mold body 111 and a plurality of returning members 113, and a plurality of guiding holes 112 are formed in the upper mold body 111; the lower mold assembly 12 includes a lower die body 121 and a plurality of guide posts 122 respectively corresponding to the guiding holes 112; the guiding impact unit 13 includes a guiding block 131, a punch 132, a pressure driving portion 133 and a pivot 134. Of course, the positions of the guide post and the guide hole can be exchanged with each other, which still does not hinder the implementation of the present case.

For convenience of explanation, it is defined herein that the upper mold assembly 11 and the lower mold assembly 12 are in a starting position away from each other before punching, and the positions close to each other at the time of punching are punching positions; in this example, the impact is guided. The unit 13 is pivotally mounted in the lower mold assembly 12 by a pivot 134, and when pressed, is pressed by the upper mold body 111 of the upper mold assembly 11 for punching. Therefore, the pressure-driven driving portion 133 in the guide impact unit 13 is interposed between the starting position and the punching position of the upper mold body 111.

When the stamping die 10 is closed, please refer to FIG. 2 together, the upper die body 111 is driven by the power source of the press machine 1 and displaced toward the lower die assembly 12, and the guiding of the impact unit 13 is guided at this time. Block 131, with the first end 1311 of the guiding block 131 as the above-mentioned pressure-driven The portion 133 is subjected to the depression of the upper mold body 111 such that the slightly L-shaped guide block 131 integrally pivots along the pivot 134 in the counterclockwise direction of the drawing, and the traction portion 1312 at the upper end of the guide block 131 is The first end portion is rotated at the same angular velocity, and the punch 132 that is pulled laterally is moved to the left to perform punching.

In this example, since the upper mold body 111 is provided with a sharp punch (not labeled), the object to be processed will be first impacted by a punch of the upper mold body 111 on the top, and then the right side. The punch 132 reaches the right side wall of the item to be treated, and instead forms another recess on the right side thereof. It can be found that, by the action of the guiding impact unit 13, the upper and the right punching can be divided into successive actions according to the time sequence, and even the right punch 132 can be arranged obliquely, so that an oblique direction can be formed on the right side of the object to be processed. The depressions provide a multi-angle stamping effect in a single impact.

Referring to FIG. 3 together, when the stamping is completed, the pressure above the upper mold assembly 11 is released, and the return member 113, which is illustrated as a spring, is sleeved on the outside of the guide post 122, and the upper mold body 111 is The restoring force of the elastic deformation caused by the pressing is reversely applied to the upper mold body 111, whereby the upper mold body 111 is pushed upward to move away from the lower mold body 121 and return to the starting position. In this example, the pivot 134 of the guiding block 131 is also provided with a torsion spring (not shown) to return the guiding block 131 to the original position, and a spring is disposed between the guiding block 131 and the punch 132 (not The label 132 will also gradually return to the starting position with the guiding block 131 to complete a stamping cycle.

As shown in FIG. 4, the length of the first end portion 1311 (i.e., the pressure-receiving portion 133 in this example) and the pivot 134 is not equal to the length of the traction portion 1312 and the pivot 134. And at an angle to each other, and the concentric arc rotation along the pivot 134, when the height of the pivot 134 is changed, the start rotation time of the pressed driving portion 133 by the contact of the upper mold body 111 can be changed. Thereby controlling the relative timing of the right side punch described above, in other words, increasing the position of the pivot 134, The original position of the guiding block 131 is relatively lowered, so that the lateral stamping delay can be started, so that the lateral punching occurs in the last period of the entire punching process; and lowering the position of the pivot 134, the original position of the guiding block 131 is relatively increased. This allows the lateral punching to be initiated early.

On the other hand, when the pivot 134 is disposed at a position closer to the left side of the guiding block 131, the connection between the first end portion 1311 (ie, the pressure driving portion 133 in this example) and the pivot 134 is shortened, and the traction portion 1312 and the pivot portion are shortened. The line of 134 is stretched such that the difference between the two is greater, that is, the traction portion 1312 will guide the punch 132 through a larger arc at the same time, and the lateral displacement speed of the lateral punch is Zoom in, so you can give a quick blow to the object to be processed at the very end of the process of punching up and down. Conversely, the pivot 134 is moved to the right relative to the guide block 131, which will lengthen the line connecting the first end 1311 and the pivot 134, and the laterally punched punch 132 thus operates relatively slowly. Of course, whether the position of the pivot 134 in the guiding block 131 is changed, or the position at which the pivot 134 is pivoted to the lower mold body is changed, a similar corresponding effect can be produced. Therefore, in this example, it is exemplified that a plurality of accommodating holes 1313 are formed in the guiding block 131 for the pivot 134 to change the setting position, whereby the same die can easily change the speed or timing of the actuation, or The position or angle of the stamping is easily adjusted, so that the flexibility of the mold is greatly improved.

A second embodiment of the present invention is illustrated in Figures 5 and 6, wherein the stamping die differs from the previous embodiment in that the guiding block 131' is pivotally mounted to the upper die assembly 11' as a pivot 134'. The shape of the guiding block 131' is changed, and the first end portion 1311' (ie, the pressure driving portion 133') is connected to the pivot 134' with respect to the traction portion 1312' and the pivot 134'. The connection becomes an obtuse angle instead of the acute angle of the previous embodiment; further, the embodiment is performed by the lower mold body 121' carrying the object to be processed moving toward the upper mold body 111' for punching; in short, the lower mold body When the stamping of the upper mold body 111' is performed, the lower mold body 121' pushes the pressure-receiving driving portion 133' of the guiding block 131' to drive the first The end portion 1311' rotates the guide block 131' and pulls the traction portion 1312' to actuate the punch 132'; therefore, it can also be stamped from the lower mold to the upper mold to illustrate the diversity of the stamping method in the present invention.

7 to 9 are schematic views showing the pressing operation of the third embodiment of the present invention. In the present embodiment, the pivot 134" of the guiding impact unit 13" is pivoted in the base 20", and the impact unit is guided. 13" additionally includes a conductive member 135", the lower end of the conductive member 135" extends to the lower mold body 121", and the upper end extends to the first end portion 1311" corresponding to the guide block 131". When the lower mold body 121" is up When punching, the pressure-receiving driving portion 133" at the lower end of the conductive member 135" is pushed forward to displace the conductive member 135" as a whole, and the conductive member 135" pushes the first end portion 1311 of the guiding block 131" with its upper end. ", the guide block 131" is further rotated, and its traction portion 1312" is pulled to actuate the punch 132" down.

Referring to the object to be processed shown in FIG. 8 and FIG. 9, the upper mold body 111" and the lower mold body 121" are first clamped and clamped, and the punch 132" is placed on the object to be processed which is clamped. The punching of a through hole in the up and down direction, such as the combination of furniture, such as table legs, leg processing, will be much more convenient than the current mold, so that the two actions in the same direction can be completed in the same mold. In this example, the upper and lower mold bodies are not clamped by the form of the guide post, but the hydraulic pump is pushed up from the bottom, for example, and the effect of the present invention can be achieved.

In particular, the guide block can be replaced by the user and can be flexibly assembled and disassembled. There is no need to replace the entire stamping assembly, and a few simple changes can be provided by changing the position of the stamping unit. Of course, as can be easily understood by those skilled in the art, the shape of the guiding block of the present invention may be differently changed; moreover, the receiving hole in the guiding block is not limited to a certain position, and the position thereof may be determined according to the location. Arranging the angles to be rotated, so that a plurality of pivots can be placed in the guiding block for the above-mentioned pivots, so that the guiding blocks can be relatively located in a plurality of dissimilar positions, thereby improving efficiency; The angle of the aforementioned guiding block is not limited to one type, and can also be matched with the matched product. The appearance of the product has changed, and the first end and the length of the traction portion can be designed as a symmetrical or asymmetrical structure without hindering the implementation of the present case. In this way, only a set of molds need to be opened, which can be adjusted according to requirements, reducing the cost of the mold.

In summary, the stamping die with the guiding impact unit of the present invention can perform multi-directional or multi-stage sequential punching by the single-axis punching machine, which not only saves the process, reduces the mold cost, but also reduces the pair. The inaccurate risk of the position greatly improves the product yield and output efficiency; it can also make the guide impact unit with adjustable position, so that it is feasible to manufacture a variety of similar products with a single die, without replacing the entire set of stamping dies. By expanding the range of use of stamping products, the cost can be effectively controlled, and the output can be further improved to achieve all of the above objectives.

The above drawings are only examples of the present invention, which can be derived from a wide range of applications, and because of the simple structure, the doubled production efficiency can also take into account the production cost, and has industrial utilization value. Any simple conversion or equivalent conversion that is the same as the technical idea of the present invention is within the scope of the patent of the present invention.

The present invention has been disclosed in the above embodiments, and is not intended to limit the present invention. Any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

1‧‧‧ Stamping machine

10‧‧‧Pressing die

11‧‧‧Upper module

111‧‧‧Upper body

112‧‧‧ Guide hole

113‧‧‧Return parts

12‧‧‧Down module

121‧‧‧Down model body

122‧‧‧ Guide column

13‧‧‧Guide impact unit

131‧‧‧guide block

132‧‧‧ punches

133‧‧‧ Pressure Drive Department

134‧‧‧ pivot

20‧‧‧ Pedestal

Claims (6)

A stamping die having a guiding impact unit for being disposed on a punching machine and stamping a workpiece to be processed, the punching machine having a base for the stamping die, the stamping die comprising: a die having a lower die a lower mold assembly of the body; an upper mold assembly having an upper mold body corresponding to the lower mold body; and at least one of the upper mold body and the lower mold body is provided at a relatively remote start a relative movement between the position and a relatively close stamping position; and at least one guiding impact unit comprising: a pivoting member of the upper mold assembly, the lower mold assembly or the base a guiding block pivoted between a rest position and an impact position; the guiding block has a first end portion and a traction portion, the first end portion to the pivot line is connected to the aforementioned traction portion to the foregoing The pivoting clip is at an angle, and the pivot pivoting the guiding block is pivoted to the lower die body; and a punch actuated by the traction portion; and the at least one guiding impact unit comprises One when above When the body and the lower mold body are relatively close to the punching position by the foregoing starting position, the first end portion of the guiding block is pivotally driven by the pushing of one of the upper mold body, the lower mold body or the base And the traction portion and the first end pivot at an equal angular velocity to actuate the punch. The stamping die of claim 1, wherein the guiding impact unit further comprises a conducting member having the pressure receiving driving portion, the conducting member contacting the leading block at an edge away from the pressurized driving portion . A stamping die according to claim 1, wherein the pressure driving portion is formed at a first end portion of the guiding block. A stamping die according to claim 1, wherein at least one of the upper die assembly or the lower die component further comprises at least one guide post, and the other of the upper die assembly or the lower die assembly is formed There are guiding holes corresponding to the number of the guiding columns and respectively corresponding to the guiding columns. The stamping die of claim 4, wherein the upper die assembly further comprises at least one sleeve that is sleeved outside the guide post for pushing the upper die body and the lower die body from the relatively close stamping position. A return member to the relatively distant starting position. The stamping die according to claim 1, wherein the guiding block of the at least one guiding impact unit is formed with a plurality of the plurality of pivots for accommodating the pivoting axis so that the guiding block can be located at a plurality of different positions. Hold the hole.