Segment difference die bending die

Abstract

A section difference die bending die comprises an upper die and a lower die, the upper die is provided with an upper fixed die and an upper movable die, the top of the upper fixed die is provided with a hanging structure, an upper pull rod penetrates through an upper penetrating hole in a sliding mode, and the pull rod penetrates through the upper penetrating hole, extends out of the inner side face of a stamping end and is fixedly connected with the upper movable die. The outer sides of the lower ends of the upper fixed die and the upper movable die are inclined planes which are inclined inwards; the lower die is provided with a lower fixed die and a lower movable die, the lower fixed die is of an L-shaped base structure, and the lower end of the lower fixed die is provided with a fixing structure connected with the workbench. A lower movable die is arranged on an L-shaped platform, a lower through hole is formed in the vertical part of a lower fixed die, and a lower pull rod penetrates through the lower through hole in a sliding mode and is fixedly connected with the lower movable die; and the outer sides of the upper ends of the lower fixed mold and the lower movable mold are of inclined plane structures which are inclined outwards. By means of the section difference mode bending device, section difference mode bending machining can be directly carried out on a flanged plate with a protruding structure. And the operation of bending before hole flanging is not needed, so that the use of additional equipment is reduced, and the processing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a precision hardware processing technology, and in particular to a step-bending die. Background Technology

[0002] The use of step dies is a common technique in precision metalworking. It allows flat sheet metal to bend into a Z-shape with a smaller bend in the middle, resembling a small step. This bending process enables sheet metal to meet the needs of many special-shaped products and also strengthens the support strength of the sheet metal.

[0003] However, existing step die processing tools are primarily used for step die processing before flanging or riveting. For many products, if the sheet metal structure could be flanged or riveted before step die bending, one or two processes could be reduced, lowering manufacturing costs. However, current step die tools, due to their combined structure of two sets of moving and stationary dies, require a horizontal contact surface on the stationary die to ensure stable sheet placement. Therefore, sheets with protruding flanged holes or rivets cannot be placed on these tools for step die processing. Step die bending must be performed first, followed by specialized flanging or riveting equipment for subsequent processing, increasing costs. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a step die bending die that can perform step die bending processing on plates with rivets or rivets.

[0005] The technical solution of this utility model is:

[0006] A step die bending die includes an upper die and a lower die. The upper die has an upper fixed die and an upper movable die. The upper fixed die has a hook structure at its top and a stamping end below it. The stamping end has an upper through hole through which an upper pull rod is slidably inserted. The pull rod extends through the upper through hole to the outside of the inner side of the stamping end and is fixedly connected to the upper movable die. The lower outer sides of the upper fixed die and the upper movable die are inwardly inclined slopes.

[0007] The lower mold includes a lower fixed mold and a lower movable mold. The lower fixed mold is an L-shaped base structure with a fixed structure at its lower end that connects to the workbench. The lower movable mold is set on its L-shaped platform. The lower fixed mold has a through hole in its vertical part, and a pull rod slides through the through hole and is fixedly connected to the lower movable mold. The upper outer sides of the lower fixed mold and the lower movable mold are inclined slope structures that slope outwards.

[0008] The lower end of the inner side surface of the upper moving mold and the upper end of the inner side surface of the lower moving mold are arranged diagonally opposite each other.

[0009] As described above, in the step die bending die, a planar strip is provided on the outer side of the lower end of the upper fixed die, and the width of the planar strip is smaller than the distance between the upper fixed die and the upper moving die.

[0010] As described above, in the step die bending die, a planar strip is provided on the outer side of the upper end of the lower fixed die, and the width of the planar strip is less than the interval between the lower fixed die and the lower moving die.

[0011] As described above, in the step die bending die, a slot is provided on the outer inclined surface of the lower fixed die, a support block is installed in the slot, an elastic element is provided between the bottom of the support block and the bottom of the slot, and the top surface of the support block is flush with the highest point of the upper end of the lower fixed die.

[0012] In the step die bending die described above, the top of the support block is a circular curved surface.

[0013] As described above, in the step die bending die, a second slot is provided on the outer inclined surface of the upper fixed die, a second support block is installed in the second slot, an elastic element is provided between the top of the second support block and the second slot, and the lower end face of the second support block is flush with the lowest point of the lower end of the upper fixed die.

[0014] As can be seen from the above description, compared with the prior art, this utility model can indeed achieve the following effects:

[0015] This utility model discloses a step-bending die, which includes an upper die and a lower die. Both the upper and lower dies have inclined surfaces on their outer sides, creating clearance space. This prevents protruding parts on plates with holes or rivets placed on the lower die from hitting the fixed die. Therefore, this step-bending die can directly perform step-bending processing on plates with already-holeed protrusions. It eliminates the need for prior bending and hole-making, reducing the use of additional equipment and improving the processing efficiency of the step-bending die. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0017] Explanation of key component designations:

[0018] This utility model:

[0019] 1: Upper fixed mold; 2: Hanging structure; 3: Upper moving mold

[0020] 4: Upper tie rod; 5: Plate; 6: Lower fixed mold

[0021] 7: Lower moving mold 8: Lower pull rod Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0023] In a preferred embodiment of the step die bending mold of this utility model, please refer to... Figure 1 As shown, the step die bending mold of this utility model includes an upper die and a lower die. The upper die has an upper fixed die 1 and an upper movable die 3. The upper fixed die 1 has a hanging structure 2 at its top and a stamping end below it. The stamping end has an upper through hole, through which an upper pull rod 4 is slidably inserted. The pull rod extends through the upper through hole to the outside of the inner side of the stamping end and is fixedly connected to the upper movable die 3. The lower outer sides of the upper fixed die 1 and the upper movable die 3 are inwardly inclined slopes. Preferably, the upper die is a punch part, and the upper movable die 3 is pulled close to the upper fixed die 1 by the upper pull rod 4.

[0024] The lower mold includes a lower fixed mold 6 and a lower movable mold 7. The lower fixed mold 6 is an L-shaped base structure with a fixed structure at its lower end for connection to the worktable. The lower movable mold 7 is mounted on its L-shaped platform. The lower fixed mold 6 has a through hole in its vertical portion, through which a pull rod 8 slides and is fixedly connected to the lower movable mold 7. The upper outer sides of the lower fixed mold 6 and the lower movable mold 7 are outwardly inclined slopes. The lower end of the inner side of the upper movable mold 3 and the upper end of the inner side of the lower movable mold 7 are diagonally arranged opposite each other. Thus, by the downward pressing action of the upper mold, the lower end of the upper fixed mold 1 presses against the outer slope of the lower movable mold 7, causing it to move closer to the lower fixed mold 6. Meanwhile, the outer slope of the upper movable mold 3 is abutted by the upper end of the lower fixed mold 6. When the upper movable mold 3 is pressed down, it also moves towards the upper fixed mold 1. Therefore, when the upper die presses down instantaneously, the upper moving die 3 and the lower moving die 7 move closer together, allowing the plate 5 placed between them to be bent in a Z-shape. Since both the upper fixed die 1 and the lower fixed die 6 have inclined surface structures on their outer sides, it is equivalent to providing clearance space for the protruding parts of the plate 5, so that the plate 5 with the already perforated and protruding structure can also be placed on the step die bending mold of this utility model for step die bending and stamping processing.

[0025] In a preferred embodiment of the step die bending mold of the present invention as described above, a planar strip is provided on the outer side of the lower end of the upper fixed die 1, and the width of the planar strip is smaller than the distance between the upper fixed die 1 and the upper moving die 3. Preferably, the planar strip, that is, a planar strip with a very small width, is provided at the lower end of the upper fixed die 1 near the outer inclined surface, and this planar strip can be used to support the plane of the workpiece to be processed.

[0026] In a preferred embodiment of the step die bending mold of this invention as described above, a planar strip is provided on the outer side of the upper end of the lower fixed die 6, and the width of the planar strip is smaller than the interval between the lower fixed die 6 and the lower moving die 7. Preferably, the planar strip, that is, a planar strip with a very small width, is provided at the upper end of the lower fixed die 6 near the outer inclined surface, and this planar strip can be used to support the plane of the workpiece to be processed.

[0027] In a preferred embodiment of the step die bending mold of the present invention as described above, a slot is provided on the outer inclined surface of the lower fixed die 6, a support block is installed in the slot, an elastic element is provided between the bottom of the support block and the bottom of the slot, and the top surface of the support block is flush with the highest point of the upper end of the lower fixed die 6. Preferably, by creating a slot on the outer inclined surface of the lower fixed die 6 and installing an elastic support block, a structure is formed to support the plate 5 at a more distant position, allowing the plate 5 to be placed more stably on the mold. Of course, depending on the position of the protruding part of the plate 5, the support block can be designed as a columnar structure that avoids the protruding part of the plate, or a structure with multiple elastic support points.

[0028] In the preferred embodiment of the step die bending mold of this utility model described above, the top of the support block is a circular curved surface. Preferably, setting the top of the support block to a circular curved surface better supports the plate and prevents scratching the plate.

[0029] In a preferred embodiment of the step die bending mold of this utility model as described above, a second slot is provided on the outer inclined surface of the upper fixed mold 1, a second support block is installed in the second slot, an elastic element is provided between the top of the second support block and the second slot, and the lower end face of the second support block is flush with the lowest point of the lower end of the upper fixed mold 1. Preferably, a second support block that can press down on the plate is also provided on the outer inclined surface of the upper fixed mold 1, so that it cooperates with the support block to achieve a stable clamping of the plate.

[0030] This utility model discloses a step-bending die, which includes an upper die and a lower die. Both the upper fixed die 1 and the lower fixed die 6 have inclined surfaces on their outer sides, creating clearance space. This prevents protruding parts on plates with holes or rivets placed on the lower die from hitting the fixed die. Therefore, this utility model's step-bending die can directly perform step-bending processing on plates with already-holeed protruding structures. It eliminates the need for prior bending and hole-making, reducing the use of additional equipment and improving the processing efficiency of the step-bending die.

[0031] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A step-bending die, characterized in that, The device includes an upper die and a lower die. The upper die has an upper fixed die and an upper movable die. The upper fixed die has a hook structure at its top and a stamping end below it. The stamping end has an upper through hole through which an upper pull rod slides. The pull rod passes through the upper through hole and extends to the outside of the inner side of the stamping end, where it is fixedly connected to the upper movable die. The lower outer sides of the upper fixed die and the upper movable die are inwardly inclined slopes. The lower mold includes a lower fixed mold and a lower movable mold. The lower fixed mold is an L-shaped base structure with a fixed structure at its lower end that connects to the workbench. The lower movable mold is set on its L-shaped platform. The lower fixed mold has a through hole in its vertical part, and a pull rod slides through the through hole and is fixedly connected to the lower movable mold. The upper outer sides of the lower fixed mold and the lower movable mold are inclined slope structures that slope outwards. The lower end of the inner side surface of the upper moving mold and the upper end of the inner side surface of the lower moving mold are arranged diagonally opposite each other.

2. The step bending die as described in claim 1, characterized in that, A planar strip is provided on the outer side of the lower end of the upper fixed mold, and the width of the planar strip is smaller than the distance between the upper fixed mold and the upper moving mold.

3. The step bending die as described in claim 1, characterized in that, A planar strip is provided on the outer side of the upper end of the lower fixed mold, and the width of the planar strip is smaller than the interval between the lower fixed mold and the lower moving mold.

4. The step bending die as described in claim 1, characterized in that, A slot is provided on the outer inclined surface of the lower fixed mold, and a support block is installed in the slot. An elastic element is provided between the bottom of the support block and the bottom of the slot, and the top surface of the support block is flush with the highest point of the upper end of the lower fixed mold.

5. The step bending die as described in claim 4, characterized in that, The top of the support block is a circular curved surface.

6. The step bending die as described in claim 5, characterized in that, The outer inclined surface of the upper fixed mold is provided with a second slot, and a second support block is installed in the second slot. An elastic element is provided between the top of the second support block and the second slot, and the lower end face of the second support block is flush with the lowest point of the lower end of the upper fixed mold.

Images