A sheet metal arc angle processing technology and processing mold

Abstract

The present invention relates to a sheet metal arc angle processing technology and a processing mold. The mold structure adopted by the present invention is simple, and the stamping and forming of the right-angle arc and the right-angle vertex arc can be completed simultaneously through the cooperation of the upper die base and the lower die base for one-time stamping processing. The processing molds used are less than those of the traditional technology, thereby ensuring the forming effect of the processed product and avoiding the problem of large product processing deviation caused by multi-tool and multi-process processing. At the same time, the mold adopts a single-angle stamping processing method, that is, one mold processes one angle at a time, which can realize the processing of products of different sizes, has a wider applicability, and has a lower investment cost for mold production; the entire processing technology can be completed by controlling the stamping action of the mold once, which is simple to operate and does not require multiple people to operate, which can effectively save labor costs.

Description

Technical Field

[0001] The invention relates to the technical field of sheet metal processing, in particular to a sheet metal arc angle processing technology and a processing mold. Background Art

[0002] Sheet metal is a common processing technology, which usually refers to the processes of stamping, shearing, welding and riveting thin plates. The products processed by sheet metal technology are called sheet metal parts. Stamping is a common modeling process for sheet metal parts. For example, some products such as metal boxes, filing cabinets and their doors are processed by sheet metal. Because thinner metal plates are used for product processing, in order to ensure the beauty of the product and the smoothness of the edges without sharp corners, the arc chamfering processing method is mostly used for the corners. There are many processing technologies at present, and they all involve different processing equipment. Combined with the current actual production and the optimization of its own technical solutions, a new arc angle processing technology and processing mold are proposed. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention discloses a sheet metal arc angle processing mold, the technical scheme adopted is that it includes a lower mold base, the upper surface of the lower mold base is fixedly connected with a lower mold fixing plate by screws, and a forming pad is fixedly connected at the middle position of one side edge of the upper surface of the lower mold fixing plate, the forming pad is rectangular and its right angle and two right-angle sides corresponding positions are fixedly connected to the lower mold fixing plate by screws, and a clamping slider is slidably installed in the lower mold guide rails corresponding to the two right-angle sides of the forming pad, and an arc angle forming block is slidably installed in the lower mold guide rails corresponding to the right angles of the forming pad, the clamping slider is T-shaped and has an inclined surface above the tail, the arc angle forming block is wedge-shaped and has an arc groove at the end, and a flat push inclined surface is provided above the tail, the arc groove corresponds to the right angle of the forming pad, and an upper mold guide plate is slidably connected above the lower mold fixing plate by screws, and the upper mold guide plate can slide up and down The spherical groove is formed on one end of the upper mold guide plate and the other end is provided with a spherical groove, and the spherical groove corresponds to the spherical groove of the lower mold guide plate. The upper mold seat is slidably connected with the lower mold seat through the sliding guide rod. The upper mold seat and the lower mold seat are slidably connected. The upper mold seat can slide up and down along the sliding guide rod. The mounting screws and the mounting hole positions of the sliding guide rod are shown in the figure. In order to clearly show the overall structure of the mold, the various connecting screws and the sliding guide rod on the mold are not shown in the figure. The middle part of the upper mold guide plate is slidably connected with an arc vertex forming block, and the arc vertex forming block is triangular prism-shaped and has a spherical groove at one end. The three sides of the arc vertex forming block are protruding arc surfaces. The arc vertex forming block is tilted to point to the right-angled upper vertex position of the forming pad, and the spherical groove corresponds to the right-angled upper vertex angle of the forming pad. The side of the lower mold seat close to the forming pad is fixedly connected with a sheet metal bracket by screws.

[0004] As a preferred solution of the present invention, a guide slide hole is provided on the upper edge of the upper die seat, and a flat push knife is fixedly connected to the corresponding positions of the flat push knife guide groove on the lower surface of the upper die seat, and an oblique push knife is fixedly connected to the corresponding position of the arc vertex angle forming block. The flat push knife slides through the flat push knife guide groove and presses on the clamping slider and the arc angle forming block respectively. The inclined surface at the lower end of the flat push knife acts on the clamping slider and the arc angle forming block, so that it can be pushed horizontally to slide on the lower die guide rail.

[0005] As a preferred solution of the present invention, a positioning support block and a positioning square pin are fixedly connected to the sheet metal bracket, and the upper surface of the positioning support block is flush with the upper surface of the forming pad. The positioning support block and the positioning square pin are used to position, support and fix the sheet metal placed thereon.

[0006] A sheet metal arc corner processing process based on the sheet metal arc corner processing mold includes the following steps:

[0007] Step 1: Cut the sheet metal material according to the design, and use a bending machine to bend the cut sheet metal material into an unprocessed arc angle A1 shape;

[0008] Step 2: Place the bent sheet metal on the sheet metal bracket, and position, support and fix the sheet metal through the positioning bracket and the positioning square pin, so that the sheet metal is buckled on the forming pad, and the unprocessed arc angle A is at a right angle to the forming pad;

[0009] Step 3, press the upper die guide plate onto the sheet metal part, and then press the upper die seat downward by means of a press machine, so that the flat push insert passes through the flat push insert guide groove and is pressed against the tail inclined surfaces of the clamping slider and the arc angle forming block respectively, and the clamping slider and the arc angle forming block are pushed flat toward the sheet metal part, and at the same time, the oblique push insert is pressed against the tail of the arc vertex forming block to push it obliquely downward toward the sheet metal part, and the sheet metal part is pressed against the right angle side of the forming pad by means of the clamping slider, and the arc groove on the arc angle forming block is used to act on the right angle of the sheet metal part, and the spherical groove on the arc vertex forming block is used to act on the right angle vertex of the sheet metal part;

[0010] Step 4: The press machine applies pressure to push the upper die seat to drive the arc angle forming block and the arc top angle forming block to complete the stamping of the sheet metal part, so that it undergoes plastic deformation to form the shape of the arc angle A2 after processing, and the stamping is completed;

[0011] Step 5: The press machine drives the upper die seat to move up and open it. The upper die guide plate can be lifted to take out the stamped sheet metal part, and then the new sheet metal part to be processed can be put in to process the next product.

[0012] The beneficial effects of the present invention are as follows: the mold structure adopted in the present invention is simple, and the stamping and forming of the right-angle arc and the right-angle vertex arc can be completed simultaneously through one-time stamping and forming by the cooperation of the upper mold base and the lower mold base. The number of processing molds used is less than that of traditional technologies, thereby ensuring the forming effect of the processed products and avoiding the problem of large product processing deviation caused by multi-tool and multi-process processing. At the same time, the mold adopts a single-angle stamping processing method, that is, one mold processes one angle at a time, which can realize the processing of products of different sizes, has a wider applicability, and has a lower investment cost for mold production; the entire processing technology can be completed by controlling the mold to stamp once, and the operation is simple, does not require multiple people to operate, and can effectively save labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the upper die base and the lower die base being separated from each other according to the present invention;

[0014] Figure 2It is a schematic diagram of the pressing state of the upper die base and the lower die base of the present invention;

[0015] Figure 3 It is a cross-sectional view of the internal structure of the upper die base and the lower die base in the pressed state of the present invention;

[0016] Figure 4 It is a schematic diagram of the structure of the lower die base of the present invention;

[0017] Figure 5 It is a schematic diagram of the structure of the upper die base of the present invention;

[0018] Figure 6 This is a schematic diagram of the arc angle forming block structure of the present invention;

[0019] Figure 7 This is a schematic diagram of the structure of the arc vertex forming block of the present invention;

[0020] Figure 8 It is a schematic diagram of a sheet metal part to be processed according to the present invention;

[0021] Fig. 9 This is an enlarged view of the unprocessed arc angle of the present invention;

[0022] Fig.10 This is an enlarged view of the arc angle after processing of the present invention.

[0023] In the figure: A arc angle to be processed, A1 unprocessed arc angle, A2 arc angle after processing, 1 lower die seat, 2 lower die fixing plate, 201 forming pad, 3 lower die guide rail, 301 clamping slide block, 302 arc angle forming block, 3021 arc groove, 3022 horizontal push inclined surface, 4 upper die guide plate, 401 horizontal push insert guide groove, 5 upper die seat, 501 guide slide hole, 502 horizontal push insert, 503 oblique push insert, 6 sheet metal bracket, 601 positioning bracket, 602 positioning square pin, 7 arc vertex angle forming block, 701 spherical groove. DETAILED DESCRIPTION

[0024] Example 1

[0025] like Figures 1 to 7 As shown, a sheet metal arc angle processing mold of the present invention is mainly used for processing Figure 8 The arc angle of the sheet metal area A shown in the figure changes the structure of area A from Fig. 9 The A1 state shown is processed into Fig.10The A2 state shown, the technical scheme adopted is, comprising a lower die base 1, the upper surface of the lower die base 1 is fixedly connected with a lower die fixing plate 2 by screws, a forming pad 201 is fixedly connected at the middle position of one side edge of the upper surface of the lower die fixing plate 2, the forming pad 201 is rectangular and three groups of lower die guide rails 3 are fixedly connected with screws on the lower die fixing plate 2 at the corresponding positions of one right angle and two right angle sides, a clamping slider 301 is respectively installed with a sliding buckle in the lower die guide rails 3 corresponding to the two right angle sides of the forming pad 201, an arc angle forming block 302 is installed with a sliding buckle in the lower die guide rails 3 corresponding to the right angle of the forming pad 201, the clamping slider 301 is T-shaped and has an inclined surface above the tail, the arc angle forming block 302 is wedge-shaped and has an arc groove 3021 at the end, A horizontal push inclined surface 3022 is provided above the tail, and the arc groove 3021 corresponds to the right angle of the forming pad 201. An upper mold guide plate 4 is slidably connected to the upper mold fixing plate 2 through screws, and the upper mold guide plate 4 can slide up and down. The upper mold guide plate 4 is located above the forming pad 201 and the lower mold guide rail 3. The upper mold guide plate 4 is provided with horizontal push knife guide grooves 401 at positions corresponding to the lower mold guide rail 3. An upper mold seat 5 is slidably inserted in the horizontal push knife guide groove 401. The upper mold seat 5 and the lower mold seat 1 are slidably mounted by sliding guide rods. The upper mold seat 5 can slide up and down along the sliding guide rods. The positions of the mounting screws and the mounting holes of the sliding guide rods have been shown in the figure. In order to clearly show the overall structure of the mold, the various connecting screws and sliding guide rods on the mold are not shown in the figure.

[0026] The upper edge of the upper die seat 5 is provided with a guide slide hole 501, and the lower surface of the upper die seat 5 is fixedly connected with a flat push insert 502 at the corresponding position of the flat push insert guide groove 401, and an oblique push insert 503 is fixedly connected with the corresponding position of the arc vertex forming block 7. The flat push insert 502 slides through the flat push insert guide groove 401 and presses on the clamping slider 301 and the arc angle forming block 302 respectively. The inclined surface of the lower end of the flat push insert 502 acts on the clamping slider 301 and the arc angle forming block 302, so that it can be pushed horizontally to slide on the lower die guide rail 3, and the arc vertex forming block 7 is slidably inserted in the middle of the upper die guide plate 4. The arc vertex forming block 7 is in the shape of a triangular prism and a spherical groove 701 is provided at one end. The three side surfaces of the arc vertex forming block 7 are protruding outwards. The arc surface ensures that the annular vertex forming block 7 can slide axially in an inclined manner in the upper mold guide plate 4 without rotating, and at the same time makes the edge of the spherical groove 701 more closely fit the arc angle of the sheet metal part that needs to be stamped and formed. The arc vertex forming block 7 is tilted and arranged to point to the right-angle upper vertex position of the forming pad 201, and the spherical groove 701 corresponds to the right-angle upper vertex angle of the forming pad 201. The side of the lower mold base 1 close to the forming pad 201 is fixedly connected to the sheet metal bracket 6 by screws, and the sheet metal bracket 6 is fixedly connected with a positioning bracket 601 and a positioning square pin 602 respectively. The upper surface of the positioning bracket 601 is flush with the upper surface of the forming pad 201, and the positioning bracket 601 and the positioning square pin 602 are used to position, support and fix the sheet metal placed thereon.

[0027] A sheet metal arc corner processing process based on the sheet metal arc corner processing mold includes the following steps:

[0028] Step 1: Cut the sheet metal material according to the design, and use a bending machine to bend the cut sheet metal material into an unprocessed arc angle A1 shape;

[0029] Step 2: Place the bent sheet metal on the sheet metal bracket 6, and position, support and fix the sheet metal through the positioning bracket 601 and the positioning square pin 602, so that the sheet metal is buckled on the forming pad 201, and the unprocessed arc angle A1 is at a right angle to the forming pad 201;

[0030] Step 3, press the upper die guide plate 4 onto the sheet metal part, and then press the upper die seat 5 downward by a press machine, so that the flat push insert 502 passes through the flat push insert guide groove 401 and is pressed against the tail inclined surfaces of the clamping slider 301 and the arc angle forming block 302 respectively, and the clamping slider 301 and the arc angle forming block 302 are pushed flatly toward the sheet metal part, and at the same time, the oblique push insert 503 is pressed against the tail of the arc vertex forming block 7 to push it obliquely downward toward the sheet metal part, and the clamping slider 301 is used to press the sheet metal part onto the right angle side of the forming pad 201, and the arc groove 3021 on the arc angle forming block 302 acts on the right angle of the sheet metal part, and the spherical groove 701 on the arc vertex forming block 7 acts on the right angle vertex of the sheet metal part;

[0031] Step 4: The press machine applies pressure to push the upper die seat 5 to drive the arc angle forming block 302 and the arc vertex angle forming block 7 to complete the stamping of the sheet metal part, so that it undergoes plastic deformation to form the shape of the processed arc angle A2, and the stamping is completed;

[0032] Step 5: The press machine drives the upper die seat 5 to move upward and open it, and the upper die guide plate 4 is lifted to remove the stamped sheet metal part, and then a new sheet metal part to be processed is placed in to process the next product.

[0033] After lifting the upper die seat 5 and the upper die guide plate 4, when taking out the stamped sheet metal part, the sheet metal part can be used to push the clamping slider 301, the arc angle forming block 302 and the arc vertex angle forming block 7 back to the initial position, so that there is a certain gap between them and the forming pad 201, which is convenient for the next sheet metal part to be processed. A spring can also be connected to the tail end of the clamping slider 301, the arc angle forming block 302 and the arc vertex angle forming block 7. When the clamping slider 301, the arc angle forming block 302 and the arc vertex angle forming block 7 are pushed by the horizontal push knife 502 and the oblique push knife 503, the spring is also stretched. When the horizontal push knife 502 and the oblique push knife 503 move up and disengage from the clamping slider 301, the arc angle forming block 302 and the arc vertex angle forming block 7, the clamping slider 301, the arc angle forming block 302 and the arc vertex angle forming block 7 will be pulled back to the initial position by the spring restoring force to prepare for the next stamping process.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0036] Components not described in detail herein are prior art.

[0037] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the protection scope of the present invention.

Claims

1. A sheet metal arc corner processing mold, characterized in that: The invention comprises a lower die base (1), the upper surface of the lower die base (1) is fixedly connected to a lower die fixing plate (2) by screws, a forming pad (201) is fixedly connected to the middle position of one side edge of the upper surface of the lower die fixing plate (2), the forming pad (201) is rectangular and three groups of lower die guide rails (3) are fixedly connected to the lower die fixing plate (2) by screws at the corresponding positions of the right angle and two right angle sides, a clamping slider (301) is respectively installed in the lower die guide rails (3) corresponding to the two right angle sides of the forming pad (201) by sliding buckles, an arc angle forming block (302) is installed in the lower die guide rails (3) corresponding to the right angle of the forming pad (201) by sliding buckles, and the lower die fixing plate (201) is fixedly connected to the middle position of the upper edge of the lower die fixing plate (201), the forming pad (201) is fixedly connected to the lower die fixing plate (201) by screws, and the lower die fixing plate (201) is fixedly connected to the lower die fixing plate (201) by screws. 2) An upper die guide plate (4) is slidably connected to the upper side by screws, the upper die guide plate (4) is located above the forming pad (201) and the lower die guide rail (3), and horizontal push knife guide grooves (401) are respectively provided on the upper die guide plate (4) at positions corresponding to the lower die guide rail (3), an upper die seat (5) is slidably inserted in the horizontal push knife guide groove (401), a circular arc vertex forming block (7) is slidably inserted in the middle of the upper die guide plate (4), and the circular arc vertex forming block (7) is tilted and pointed to the right-angle upper vertex position of the forming pad (201), and a sheet metal bracket (6) is fixedly connected to the side of the lower die seat (1) close to the forming pad (201) by screws.

2. A sheet metal arc corner processing die according to claim 1, characterized in that: The clamping slide block (301) is T-shaped and has an inclined surface above the tail. The arc angle forming block (302) is wedge-shaped and has an arc groove (3021) at the end. A flat push inclined surface (3022) is provided above the tail. The arc groove (3021) corresponds to the right angle of the forming pad (201).

3. A sheet metal arc corner processing die according to claim 2, characterized in that: A guide sliding hole (501) is provided on the upper edge of the upper die seat (5); a flat push inserting knife (502) is fixedly connected to the corresponding position of the flat push inserting knife guide groove (401) on the lower surface of the upper die seat (5); and an oblique push inserting knife (503) is fixedly connected to the corresponding position of the arc vertex angle forming block (7); the flat push inserting knife (502) slides through the flat push inserting knife guide groove (401) and is pressed against the pressing slider (301) and the arc angle forming block (302) respectively.

4. A sheet metal arc corner processing die according to claim 3, characterized in that: A positioning support block (601) and a positioning square pin (602) are respectively fixedly connected to the sheet metal bracket (6), and the upper surface of the positioning support block (601) is flush with the upper surface of the forming cushion block (201).

5. A sheet metal arc corner processing die according to claim 4, characterized in that: The arc vertex corner forming block (7) is in the shape of a triangular prism and has a spherical groove (701) at one end thereof. The three side surfaces of the arc vertex corner forming block (7) are outwardly protruding arc surfaces.

6. A sheet metal arc angle processing technology, based on the sheet metal arc angle processing mold according to claim 5, characterized in that: The steps include: Step 1: Cut the sheet metal material according to the design, and use a bending machine to bend the cut sheet metal material into an unprocessed arc angle (A1) shape; Step 2: Place the bent sheet metal part on the sheet metal part bracket (6), and position, support and fix the sheet metal part by means of the positioning bracket (601) and the positioning square pin (602), so that the sheet metal part is buckled on the forming pad (201), and the unprocessed arc angle (A1) is at a right angle to the forming pad (201); Step 3, press the upper die guide plate (4) onto the sheet metal part, then press the upper die seat (5) downward by means of a press machine, so that the flat push insert (502) passes through the flat push insert guide groove (401) and then presses against the tail inclined surfaces of the clamping slider (301) and the arc angle forming block (302), respectively, pushes the clamping slider (301) and the arc angle forming block (302) horizontally toward the sheet metal part, and at the same time, the oblique push insert (503) presses against the tail of the arc vertex forming block (7) to push it obliquely downward toward the sheet metal part, uses the clamping slider (301) to press the sheet metal part onto the right angle side of the forming pad (201), uses the arc groove (3021) on the arc angle forming block (302) to act on the right angle of the sheet metal part, and uses the spherical groove (701) on the arc vertex forming block (7) to act on the right angle vertex of the sheet metal part; Step 4: The press machine applies pressure to push the upper die seat (5) to drive the arc angle forming block (302) and the arc vertex angle forming block (7) to complete the stamping of the sheet metal part, so that it undergoes plastic deformation to form the shape of the processed arc angle (A2), thereby completing the stamping; Step 5: The press machine drives the upper die seat (5) to move upward and open it, and the upper die guide plate (4) is lifted to remove the stamped sheet metal part, and then a new sheet metal part to be processed is placed in to process the next product.

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