阅读说明：本技术 一次折负角装置 (Once negative angle folding device ) 是由 赵俊东 刘强 于 2020-08-07 设计创作，主要内容包括：本发明涉及一种一次折负角装置,包括上模组件、下模组件,上模组件上对称设置有两个冲头组件,冲头组件间设有插刀,冲头组件包括摆动固定块和摆动冲头,摆动固定块固定连接在上模组件上,摆动冲头通过转轴与摆动固定块连接,下模组件对称设置有两个与冲头组件位置相对的摆块组件,摆块组件包括摆块固定座和成型摆块,摆块固定座固定连接在下模组件上,成型摆块通过转轴与摆块固定座连接,摆动冲头下部的设有折弯凸起成型摆块的上部设有与折弯凸起相对应的折弯槽。本发明使用时通过摆动冲头和成型摆块配合来压折板材,操作十分简单,生产效率高,产品两侧的折弯一次压制成型,一致性更好,产品的质量也更高。(The invention relates to a one-time negative angle bending device which comprises an upper die assembly and a lower die assembly, wherein two punch assemblies are symmetrically arranged on the upper die assembly, a slotting tool is arranged between the punch assemblies, each punch assembly comprises a swinging fixed block and a swinging punch, the swinging fixed block is fixedly connected to the upper die assembly, the swinging punch is connected with the swinging fixed block through a rotating shaft, the lower die assembly is symmetrically provided with two swinging block assemblies opposite to the punch assemblies, each swinging block assembly comprises a swinging block fixed seat and a forming swinging block, the swinging block fixed seats are fixedly connected to the lower die assembly, the forming swinging blocks are connected with the swinging block fixed seats through rotating shafts, and bending grooves corresponding to bending protrusions are formed in the upper parts of the forming swinging blocks, which are provided with the bending protrusions, at the lower. When the bending machine is used, the swing punch and the forming swing block are matched to fold the plate, the operation is very simple, the production efficiency is high, the bending at two sides of the product is formed by one-step pressing, the consistency is better, and the quality of the product is higher.)

1. A once negative angle folding device is characterized in that: comprises an upper die component (100) and a lower die component (200), wherein two punch components (300) are symmetrically arranged on the upper die component (100), a slotting tool (400) is arranged between the punch components (300), each punch component (300) comprises a swinging fixing block (310) and a swinging punch (320), the swinging fixing block (310) is fixedly connected to the upper die component (100), the swinging punch (320) is connected with the swinging fixing block (310) through a rotating shaft,

the lower die assembly (200) is symmetrically provided with two swinging block assemblies (500) opposite to the punch assembly, each swinging block assembly (500) comprises a swinging block fixing seat (510) and a forming swinging block (520), the swinging block fixing seats (510) are fixedly connected to the lower die assembly (200), the forming swinging blocks (520) are connected with the swinging block fixing seats (510) through rotating shafts,

the bending punch is characterized in that a bending protrusion (321) is arranged on the lower portion of the swing punch (320), a bending groove (521) corresponding to the bending protrusion (321) is formed in the upper portion of the forming swing block (520), a first slope surface (322) and a guide groove (323) are respectively arranged on two sides of the bending protrusion (321), a second slope surface (522) corresponding to the first slope surface (322) is respectively arranged on two sides in the bending groove (521), and a guide protrusion (523) corresponding to the guide groove (323).

2. The negative angle folding device according to claim 1, wherein: and a return spring (521) is mounted on the forming swing block (520), one end of the return spring (521) is mounted in a return spring hole (522) on the forming swing block (520), and the other end of the return spring is fixedly connected to the lower die holder (200).

3. The negative angle folding device according to claim 1, wherein: the swinging punch (320) is provided with a limiting protrusion (325), and the limiting protrusion (325) is located on the side portion of the swinging punch (320) and abuts against the side portion of the slotting tool (500).

4. The negative angle folding device according to claim 1, wherein: the joint of the swing fixed block (310) and the swing punch (320) is provided with a rotating gap, and the joint of the swing block fixed seat (510) and the forming swing block (520) is provided with a rotating gap.

5. The negative angle folding device according to claim 1, wherein: the slotting tool (500) comprises a fixing part (410) fixedly connected with the upper die holder (100) and a conical insertion part (420) located at the lower part of the fixing part (410), and the insertion part (420) is opposite to the gap positions of the two forming swinging blocks (520).

6. The negative angle folding device of claim 5, wherein: the molded pendulum block (520) comprises a processing area of a front half part and an insertion area of a rear half part, and the insertion part (420) corresponds to the position of the insertion area.

7. The negative angle folding device according to claim 1, wherein: the swing block fixing seats (510) of the two swing block assemblies (500) are mutually integrated and fixedly connected to the lower die seat (200) through bolts.

The technical field is as follows:

the invention relates to the technical field of stamping machinery, in particular to a one-time negative angle folding device.

Background art:

the stamping die is a special process equipment for processing materials (metal or nonmetal) into parts (or semi-finished products) in cold stamping, and is called cold stamping die (commonly called cold stamping die). Bending refers to a stamping process of bending a sheet material into a required angle and shape along a bending line. At present, the five metals structure often needs the negative angle to bend, and prior art when folding the negative angle to the product, at first will bend into 90 degrees through stamping die with the product, then secondary operation bends into the negative angle that needs again. The negative angle folding process is complex in procedure, two sets of stamping dies are required to be used, the negative angle folding process can be formed only through more than two operations, the manufacturing cost and the labor cost are high, the production and machining efficiency is low, the two sides of a plurality of products need to be symmetrically bent, however, only one side of each product needs to be machined firstly, the other side of each product needs to be machined, the symmetry of the folding angles of the two sides of each product is difficult to guarantee, and the product quality is poor.

The invention content is as follows:

the invention aims to provide a one-time negative angle folding device which is convenient to use, simple to operate, high in working efficiency and good in product quality, aiming at the defects of the prior art.

The invention is realized by the following technical scheme: a negative angle bending device for one time comprises an upper die assembly and a lower die assembly, wherein two punch assemblies are symmetrically arranged on the upper die assembly, a slotting tool is arranged between the punch assemblies, each punch assembly comprises a swing fixed block and a swing punch, the swing fixed block is fixedly connected to the upper die assembly, the swing punch is connected with the swing fixed block through a rotating shaft, the lower die assembly is symmetrically provided with two swing block assemblies opposite to the punch assemblies in position, each swing block assembly comprises a swing block fixed seat and a forming swing block, the swing block fixed seats are fixedly connected to the lower die assembly, the forming swing blocks are connected with the swing block fixed seats through rotating shafts, bending bulges are arranged at the lower part of the swing punch, bending grooves corresponding to the bending bulges are formed in the upper parts of the forming swing blocks, and first slope surfaces and guide grooves are respectively arranged on two sides of the bending bulges, and second slope surfaces corresponding to the first slope surfaces and guide protrusions corresponding to the guide grooves are respectively arranged on two sides in the bending groove.

In the technical scheme, the forming swing block is provided with the return spring, one end of the return spring is arranged in the return spring hole in the forming swing block, and the other end of the return spring is fixedly connected to the lower die base.

In the technical scheme, the swing punch is provided with a limiting bulge, and the limiting bulge is positioned on the side part of the swing punch and is abutted against the side part of the slotting tool.

In the technical scheme, a rotating gap is formed in the joint of the swing fixing block and the swing punch, and a rotating gap is formed in the joint of the swing block fixing seat and the forming swing block.

In the above technical scheme, the slotting tool includes the fixed part with upper die base fixed connection and the toper portion of inserting that is located the fixed part lower part, the portion of inserting is with two the clearance position of shaping pendulum block is relative.

In the above technical solution, the molded pendulum block includes a machining region of the front half and an insertion region of the rear half, and the insertion region is located right above the insertion region.

In the technical scheme, the swing block fixing seats of the two swing block assemblies are integrated with each other and are fixedly connected to the lower die seat through bolts.

The invention has the beneficial effects that: when the bending machine is used, the swinging punch and the forming swinging block are matched to press and fold a plate, in order to press two sides of the plate into negative angles, the swinging punch and the forming swinging block are respectively provided with a bending bulge and a bending groove with certain angles, and the opening direction of the bending groove is adjusted by controlling the distance between the two forming swinging blocks through the slotting tool, so that the bending bulge can be inserted into the bending groove.

Description of the drawings:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged view of a portion of the present invention inserted into a top-opening molded pendulum block;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a partially enlarged view illustrating a first state of a product bending process according to the present invention;

FIG. 5 is a partially enlarged view of a second state of the product bending process of the present invention;

fig. 6 is a partially enlarged schematic view of the present invention in a blanking state.

The reference numbers are as follows: an upper die assembly 100; a lower die assembly 200; a punch assembly 300; a swing fixing block 310; oscillating the punch 320; a bent boss 321; a first sloped surface 322; a guide groove 323; a slotting tool 400; a wobble block assembly 500; a swing block holder 510; a shaped pendulum block 520; a bending groove 521; a second ramp surface 522; a guide boss 523; a return spring 524; a return spring aperture 525.

The specific implementation mode is as follows:

the following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention.

As shown in fig. 1 and 2, a negative angle folding device for one time comprises an upper die assembly 100 and a lower die assembly 200, two punch assemblies 300 are symmetrically arranged on the upper die assembly 100, a slotting tool 400 is arranged between the punch assemblies 300, each punch assembly 300 comprises a swing fixed block 310 and a swing punch 320, the swing fixed block 310 is fixedly connected to the upper die assembly 100, the swing punch 320 is connected with the swing fixed block 310 through a rotating shaft, the lower die assembly 200 is symmetrically provided with two swing block assemblies 500 opposite to the punch assemblies, each swing block assembly 500 comprises a swing block fixed seat 510 and a forming swing block 520, the swing block fixed seat 510 is fixedly connected to the lower die assembly 200, the forming swing block 520 is connected with the swing block fixed seat 510 through a rotating shaft, the upper part of the swing punch 320, which is provided with a bending protrusion 321, which is provided with a bending groove 521 corresponding to the bending protrusion 321, two sides of the bending protrusion 321 are respectively provided with a first slope 322 and a guide, the bent groove 521 is provided at both sides thereof with a second slope surface 522 corresponding to the first slope surface 322 and a guide protrusion 523 corresponding to the guide groove 323.

The forming swing block 520 is provided with a return spring 524, one end of the return spring 524 is arranged in a return spring hole 525 on the forming swing block 520, and the other end is fixedly connected to a boss or other fixed structures of the lower die holder 200.

As shown in fig. 1 to 6, the swing punch 320 is provided with a limiting protrusion 325, and the limiting protrusion 325 is located at a side portion of the swing punch 320 and abuts against a side portion of the slotting tool 500, so that the swing punch 320 has a certain angle in an initial insertion state, and the bending protrusion 321 is more conveniently inserted into the bending groove 521.

As shown in fig. 1 to 6, a rotation gap is provided at the joint of the swing fixing block 310 and the swing punch 320, and a rotation gap is provided at the joint of the swing block fixing seat 510 and the forming swing block 520.

The insert 500 includes a fixing portion 410 fixedly connected to the upper die base and a tapered insertion portion 420 located at a lower portion of the fixing portion, and the insertion portion 420 is opposite to a gap position of two formed pendulums 520.

The shaped pendulum block 520 includes a machined region of the front half and an inserted region of the back half, with the insert 420 being located directly above the inserted region so that the swinging punch 320 is not affected while the slotting tool 400 pushes the shaped pendulum block 520 open.

The swing block fixing seats 510 of the two swing block assemblies 500 are integrated with each other and fixedly connected to the lower die holder 200 through bolts.

When the invention is used, the upper die assembly 100 moves downwards, firstly the slotting tool contacts the forming swing block 520 of the lower die assembly 200, and the two forming swing blocks 520 are unfolded, at the moment, the return spring 524 is compressed to a top dead state, the upper die assembly 100 drives the punch assembly 300 to move downwards, the initial contact material is bent, the bending angle alpha is 85 degrees, the bending protrusion 321 of the swinging punch of the upper die assembly 100, which inclines 320, moves along the bending groove 521 of the forming swing block 520 to continuously press the plate, the die is bent and formed until the die moves to the bottom dead center, the die is completely closed, the bending angle beta is changed to 140 degrees to complete the bending, at the moment, the upper die assembly 100 is reset upwards, the slotting tool 400 leaves the forming swing block 520 of the lower die assembly, the acting force of the slotting tool 400 is avoided, the forming swing block 520 is restored to the initial position under the acting force of the return spring 524, and the product can be taken out smoothly in the vertical direction after the.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "side", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.