CN105215201A - Swing bending die - Google Patents

Abstract

The invention provides a swing bending die, belonging to the field of bending dies, comprising a lower die base and an upper die base; the lower die base is provided with a floating die and a floating mechanism for driving the floating die to float up and down on the lower die base, One side of the floating die is provided with a wedge, and the other side is provided with a positioning block; the upper die base is provided with a punch, one side of the punch is provided with a swing piece, one end of the swing piece is rotatably connected with the upper die base, and the other is A forming part is arranged at one end, and a forming groove is arranged on a side of the punch close to the swinging part, and the forming part can be inserted into the forming groove when the swinging part rotates. The oscillating bending die provided by the present invention can be processed and formed at one time to obtain a part of the workpiece with a bending angle and a part of the shape of a specific shape, and bending the part of a specific shape can realize the forming of a more complex shape, without using multiple molds for multiple stamping, and also There is no need to adopt a compound mold with a complex structure, thereby improving the processing efficiency and reducing the cost of the mold.

Description

swing bending die

technical field

The invention relates to the field of bending dies, in particular to a swinging bending die.

Background technique

One type of bending die is a stamping die that bends the blank into a certain angle according to the shape of the part, and the workpiece of a certain shape. For a workpiece with a part shape bending angle and another part shape bending a specific shape, when using a bending die for stamping, it is usually necessary to use multiple dies for multiple stamping, or a compound die with a more complex structure, the former requires multiple clamping Multiple stampings have low processing efficiency. Although the latter can complete the processing at one time, the mold structure is complex and the production cost is high, which is not conducive to popularization.

Contents of the invention

The present invention provides a oscillating bending die, aiming to improve the above problems.

The present invention is achieved like this:

A swing bending die, comprising a lower die base and an upper die base;

The lower die base is provided with a floating die and a floating mechanism for driving the floating die to float up and down on the lower die base, one side of the floating die is provided with a wedge, and the other side is provided with a There are positioning blocks;

A punch is arranged on the upper die base, and a swinging member is arranged on one side of the punch, one end of the swinging member is rotatably connected with the upper die base, and the other end is provided with a forming part, and the punch is close to One side of the oscillating member is provided with a forming groove, and when the oscillating member rotates, the forming portion can be inserted into the forming groove.

Further, the floating mechanism includes a top block and a spring, the top block is arranged on the floating die, and the two ends of the spring are respectively connected to the lower end surface of the top block and the upper end surface of the lower mold base.

During the stamping process, the top block can withstand the blank and play a supporting role for the blank, and after the top block floats downward, the top block and the lower mold base form a groove for forming the concave part of the product. When the top block is floating up and down, it realizes floating and reset by compressing or relaxing the spring. And when designing, rationally design the downward floating stroke of the top block to meet the requirements of the depth of the concave part of the workpiece.

Further, the floating mechanism also includes a floating backing plate, a buffer pad and several jacking columns, the lower mold base is arranged on the buffer pad, the floating backing plate is arranged on the lower mold base, and the floating concave The mold is set on the floating backing plate, the top column passes through the lower mold base and its two ends are respectively fixedly connected with the floating backing plate and the buffer pad, and the spring passes through the floating backing plate .

When stamping and forming, the floating backing plate can play a buffer role in the downward floating of the top block, the top block floats down, pushes the floating backing plate to move downward, and the floating backing plate pushes the top column to move down, and acts on the buffer pad, Buffer further. Through the floating backing plate, the buffer pad and the spring, a floating mechanism that can effectively buffer and is easy to reset is formed as a whole, so that the bending accuracy is easier to ensure, and the top block is not easy to be damaged.

Further, the lower end surface of the top block and the upper end surface of the lower mold base are respectively provided with grooves, and the two ends of the spring are respectively embedded in the grooves.

The two ends of the spring are respectively embedded in the groove of the top block and the groove of the lower mold base, so that the spring is not easy to shift during the process of repeated compression and relaxation, ensuring the normal progress of stamping and bending.

Further, a positioning pin is provided on the upper end surface of the top block, and a pin hole that can cooperate with the positioning pin is provided on the punch.

The upper end surface of the top block is provided with a positioning pin at the position of its non-working part, so that the positioning pin can extend into the pin hole on the punch when the punch is pressed into the floating die, so as to play the role of precise positioning and avoid Stamping produces shifting and skewing.

Further, an inclined surface is provided on a side of the swing member away from the forming part, and the inclined surface corresponds to the inclined surface of the wedge.

When the upper mold base moves towards the lower mold base, the inclined surface on the swinging piece contacts the inclined surface on the inclined wedge, and under the constraint of the inclined surface of the inclined wedge, the swinging piece rotates away from the inclined wedge, so that the forming part presses Put the blank into the forming groove to get the part of the curved shape on the part.

Further, the forming part is hemispherical, and the forming groove is a hemispherical groove matching the forming part.

The forming groove is a hemispherical groove, so that the curved part of the workpiece can obtain a hemispherical shape.

Further, the forming part includes rollers, the rollers are connected to the bracket, and the two sides of the bracket are respectively hinged to the swinging member.

By arranging the rollers, it is possible to form parts with more complex shapes, especially more complex curves, in the forming groove.

Further, the forming groove includes a sliding part connected to each other and an arc-shaped groove, and the arc-shaped groove can cooperate with the roller.

By setting the sliding part and the arc-shaped groove, when the roller presses the blank into the forming groove, it first passes through the sliding part and then moves into the arc-shaped groove. The sliding part forms a transition curve, and the arc-shaped groove forms an arc. Curves and arcs are smoothly connected, and finally a curved shape with smooth curvature transition and complex shape can be obtained.

Further, a return spring is provided between the bracket and the swing member.

After the forming process is completed, the roller can be easily reset by the return spring.

The beneficial effect of the oscillating bending die provided by the present invention is: when the oscillating bending die is working, the blank is placed on the floating die, and the upper die base moves toward the lower die base, so that the punch presses the blank to form on the floating die, In this process, the pendulum rotates after touching the wedge, and the forming part presses one side wall of the blank and presses it into the forming groove to obtain the preset shape. The other side wall of the blank is in the floating die Bending under the action. When the blank is bending, the floating mechanism drives the floating die to float up and down, so as to realize the flow of the blank along the floating die during stamping, and obtain the workpiece with the designed shape.

Therefore, the oscillating bending die provided by the present invention can obtain part-shaped bending angles and part-shaped workpieces of specific shapes in one-time processing, and bending parts of specific shapes can realize molding of more complex shapes. By adopting the swing bending die, it is not necessary to use multiple dies for multiple punching, and it is also unnecessary to use a composite die with a complex structure, thereby improving the processing efficiency and reducing the cost of the die.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the schematic structural view of the swing bending die provided by the first embodiment of the present invention;

Fig. 2 is a schematic structural view of the upper die holder of the swing bending die provided by the second embodiment of the present invention.

The marks in the figure are:

Lower mold base 101; floating die 102; inclined wedge 103; positioning block 104; top block 105; spring 106; floating backing plate 107; buffer pad 108;

Upper mold base 201; punch 202; swinging member 203; forming part 204; forming groove 205; roller 206; bracket 207; sliding part 208; arc groove 209;

detailed description

One type of bending die is a stamping die that bends the blank into a certain angle according to the shape of the part, and the workpiece of a certain shape. For a workpiece with a part shape bending angle and another part shape bending a specific shape, when using a bending die for stamping, it is usually necessary to use multiple dies for multiple stamping, or a compound die with a more complex structure, the former requires multiple clamping Multiple stampings have low processing efficiency. Although the latter can complete the processing at one time, the mold structure is complex and the production cost is high, which is not conducive to popularization.

In view of this, the designer of the present invention has designed a swing bending mold through long-term exploration and trial, as well as multiple experiments and efforts, and has designed a swing bending mold, which can obtain the bending angle of some shapes and the bending angle of some shapes at one time. Shaped workpieces, and bending parts of specific shapes can achieve more complex shapes. By adopting the swing bending die, it is not necessary to use multiple dies for multiple punching, and it is also unnecessary to use a composite die with a complex structure, thereby improving the processing efficiency and reducing the cost of the die.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

first embodiment

This embodiment provides a oscillating bending die, which is used to process a part of the shape of the bending angle, and another part of the shape to bend the workpiece of a specific shape. Please refer to FIG. 1 , the swing bending die includes a lower mold base 101 and an upper mold base 201 . The lower die base 101 is provided with a floating die 102 and a floating mechanism for driving the floating die 102 to float up and down on the lower die base 101. One side of the floating die 102 is provided with a wedge 103, and the other side is provided with a positioning block. 104.

A punch 202 is arranged on the upper die base 201, and a swinging member 203 is arranged on one side of the punch 202. One end of the swinging member 203 is rotationally connected with the upper die base 201, and the other end is provided with a forming part 204. The punch 202 is close to the swinging member. One side of the 203 is provided with a molding groove 205 , and when the swing member 203 rotates, the molding part 204 can be inserted into the molding groove 205 .

When the oscillating bending die is in operation, the blank is placed on the floating die 102, and the upper die base 201 moves toward the lower die base 101, so that the punch 202 presses the blank to form on the floating die 102. During this process, the swing The part 203 rotates after touching the wedge 103, and the forming part 204 presses one side wall of the blank and presses it into the forming groove 205 to obtain a preset shape. Bending under action. When the blank is bent, the floating mechanism drives the floating die 102 to float up and down, thereby realizing the flow of the blank along the floating die 102 during stamping, and obtaining a product with a designed shape.

Therefore, the oscillating bending die provided in this embodiment can obtain a partial shape bending angle and a workpiece of a specific shape through one-time processing, and bending a specific shape part can realize molding of a more complex shape. By adopting the swing bending die, it is not necessary to use multiple dies for multiple punching, and it is also unnecessary to use a composite die with a complex structure, thereby improving the processing efficiency and reducing the cost of the die.

Please refer to Fig. 1, on the basis of the technical solution of the swing bending die provided in the above-mentioned embodiment, further, the floating mechanism includes a top block 105 and a spring 106, the top block 105 is arranged on the floating die 102, and the two ends of the spring 106 They are respectively connected with the lower end surface of the top block 105 and the upper end surface of the lower mold base 101 .

During the stamping process, the top block 105 can withstand the blank to support the blank, and after the top block 105 floats downward, the top block 105 and the lower mold base 101 form a groove for forming the concave part of the product. When the top block 105 floats up and down, the spring 106 is pressed or loosened to realize floating and reset. And when designing, the stroke of the top block 105 floating downward is reasonably designed to meet the requirements of the depth of the recessed part of the workpiece.

The floating mechanism also includes a floating backing plate 107, a buffer pad 108 and some top columns 109, the lower die base 101 is arranged on the buffer pad 108, the floating backing plate 107 is arranged on the lower die base 101, and the floating die 102 is arranged on the floating backing plate 107 , the top column 109 passes through the lower mold base 101 and its two ends are respectively fixedly connected with the floating backing plate 107 and the buffer pad 108 , and the spring 106 passes through the floating backing plate 107 .

When stamping and forming, the floating backing plate 107 can play a buffering role to the downward floating of the top block 105, the top block 105 floats downward, and pushes the floating backing plate 107 to move downward, and the floating backing plate 107 pushes the top column 109 to move downward, And act on the buffer pad 108 to further buffer. Through the floating backing plate 107, the buffer pad 108 and the spring 106, a floating mechanism that can effectively buffer and is easy to reset is formed as a whole, so that the bending accuracy is easier to ensure, and the top block 105 is not easily damaged.

The lower end surface of the top block 105 and the upper end surface of the lower mold base 101 are respectively provided with grooves 110 , and the two ends of the spring 106 are embedded in the grooves 110 respectively.

The two ends of the spring 106 are respectively embedded in the groove 110 of the top block 105 and the groove 110 of the lower mold base 101, so that the spring 106 is not easy to shift during the process of repeated compression and relaxation, ensuring the normal progress of stamping and bending .

A positioning pin 111 is provided on the upper surface of the top block 105 , and a pin hole that can cooperate with the positioning pin 111 is provided on the punch 202 .

The upper end surface of the top block 105 is provided with a positioning pin 111 at the position of its non-working part, so that the positioning pin 111 can be stretched into the pin hole on the punch 202 when the punch 202 is pressed into the floating die 102, so that To achieve the role of precise positioning, to avoid stamping shift and skew.

A side of the pendulum 203 away from the forming part 204 is provided with an inclined surface corresponding to the inclined surface of the wedge 103 .

When the upper mold base 201 moves towards the lower mold base 101, the inclined surface on the swing member 203 contacts the inclined surface on the inclined wedge 103, and under the constraints of the inclined surface of the inclined wedge 103, the swing member 203 moves away from the inclined wedge 103. Rotate, so that the forming part 204 presses the blank into the forming groove 205, and obtains the part of the curved forming shape on the workpiece.

By setting the shapes of the forming part 204 and the forming groove 205, different bending forming parts 204 can be obtained. For example, in this embodiment, the forming part 204 is hemispherical, and the forming groove 205 is a hemispherical groove matching the forming part 204.

The forming groove 205 is a hemispherical groove, so that the curved part of the workpiece can obtain a hemispherical shape.

second embodiment

This embodiment provides a swing bending die, which differs from the swing bending die provided in the first embodiment in that the forming part 204 is different.

Please refer to FIG. 2 , in this embodiment, the forming part 204 includes a roller 206 connected to a bracket 207 , and two sides of the bracket 207 are respectively hinged to the swinging member 203 .

By arranging the rollers 206 , it is possible to form a more complicated shape in the forming groove 205 , especially a more complicated curve.

The forming groove 205 includes a sliding part 208 connected with each other and an arc groove 209 , and the arc groove 209 can cooperate with the roller 206 .

By setting the sliding part 208 and the arc groove 209, when the roller 206 presses the blank into the forming groove 205, it first passes through the sliding part 208 and then moves into the arc groove 209, the sliding part 208 forms a transition curve, and the arc groove 209 The arc is internally formed, and the transition curve is smoothly connected with the arc, so that a curved shape with smooth curvature transition and complex shape can finally be obtained.

A return spring 210 is disposed between the bracket 207 and the swing member 203 . The roller 206 can be easily reset by the return spring 210 after the forming process is completed.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a swing bending die, is characterized in that, comprises die shoe and upper bolster;

Described die shoe is provided with floating cavity die and the relocation mechanism for driving described floating cavity die to fluctuate on described die shoe, the side of described floating cavity die is provided with wedge, and opposite side is provided with locating piece;

Described upper bolster is provided with punch, the side of described punch is provided with swing component, one end and the described upper bolster of described swing component are rotationally connected, the other end is provided with forming part, described punch is provided with forming tank near the side of described swing component, when described swing component rotates, described forming part can embed described forming tank.

2. swing bending die according to claim 1, is characterized in that, described relocation mechanism comprises jacking block and spring, and described jacking block is arranged on floating cavity die, and the two ends of described spring are connected with the lower surface of described jacking block and the upper surface of described die shoe respectively.

3. swing bending die according to claim 2, it is characterized in that, described relocation mechanism also comprises floating plate, cushion pad and some fore-sets, described die shoe is arranged on described cushion pad, described floating plate is arranged on described die shoe, described floating cavity die is arranged on described floating plate, and described fore-set passes described die shoe and its two ends are fixedly connected with described cushion pad with described floating plate respectively, and described spring is through described floating plate.

4. swing bending die according to claim 2, is characterized in that, the lower surface of described jacking block and the upper surface of described die shoe are respectively arranged with groove, and the two ends of described spring embed in described groove respectively.

5. swing bending die according to claim 2, is characterized in that, the upper surface of described jacking block is provided with alignment pin, described punch is provided with can with the pin-and-hole of described detent fit.

6. swing bending die according to claim 1, is characterized in that, described swing component is provided with inclined plane away from the side of described forming part, and described inclined plane is corresponding with the inclined-plane of described wedge.

7. swing bending die according to claim 1, is characterized in that, described forming part is hemispherical, and described forming tank is the dome-type groove mated with described forming part.

8. swing bending die according to claim 1, is characterized in that, described forming part comprises roller, and described roller is connected with support, and the both sides of described support are hinged with described swing component respectively.

9. swing bending die according to claim 8, is characterized in that, described forming tank comprises interconnective sliding part and deep-slotted chip breaker, and described deep-slotted chip breaker can coordinate with described roller.

10. swing bending die according to claim 9, is characterized in that, is provided with back-moving spring between described support and described swing component.