Mold and sheet metal manufacturing system

Abstract

The present invention discloses a mold and sheet metal manufacturing system. The mold includes: a base, a lower mold, an upper mold and a driving member. The base is provided with a molding groove that opens upward; the lower mold includes a movable part, two fixed parts and a reset part. The movable part is installed in the molding groove in an up-down direction and has a molding position away from the molding groove. The upper mold is arranged above the base relative to the lower mold, and the upper mold is movable in an up-down direction. The upper mold is used to push the movable part to the molding position when it moves downward, so as to extrude the blank together with the lower mold to form it; the driving member is connected to the upper mold, and the driving member is used to drive the upper mold to move in an up-down direction. In conventional molds, the upper mold and the lower mold are fixed. The upper mold and the movable part press the blank before moving downward. Therefore, the blank has almost no movement during the molding process. In the present invention, the blank will move adaptively due to the movement of the movable part, thereby avoiding tearing.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet metal production, and in particular to a mold and a sheet metal manufacturing system. Background Art

[0002] Sheet metal parts of various types are widely used in today's machinery. The more complex the sheet metal structure, the more difficult it is to manufacture, often requiring multiple steps to fully form it. This is because when sheet metal structures are complex and have many bends, the risk of tearing the blank during forming increases, so different parts of the sheet metal need to be formed separately.

[0003] Sheet metal manufacturing systems mainly rely on molds to manufacture sheet metal parts. When sheet metal parts have many forming processes, the sheet metal manufacturing system will require multiple sets of molds to complete the manufacturing, which makes the cost too high and the process complicated. Summary of the Invention

[0004] The main purpose of the present invention is to provide a mold and sheet metal manufacturing system, which aims to solve the problem that the blank may be torn when the traditional mold is used to form sheet metal parts with relatively complex structures.

[0005] To achieve the above object, the present invention provides a mold, comprising:

[0006] The base is provided with a forming groove opening upward;

[0007] The lower mold comprises a movable portion arranged in the molding groove, two fixed portions fixedly arranged on both sides of the movable portion, and a reset member provided on the base. The movable portion is movably installed in the molding groove in the vertical direction and has an initial position close to the molding notch portion and a molding position away from the molding notch portion during the movement. The movable portion is used to jointly carry the blank with the two fixed portions in the initial position. The reset members are respectively connected to the movable portion to reset the movable portion from the molding position to the initial position.

[0008] an upper die, which is arranged above the base relative to the lower die and is movable in the up-down direction, and is used to push the movable portion to the forming position when moving downward, so as to extrude the blank together with the lower die to form the blank; and

[0009] A driving member is connected to the upper die for driving the upper die to move in an up-down direction.

[0010] Optionally, the upper mold is provided with an abutment portion toward the lower mold, and the movable portion and the two fixed portions are respectively provided with matching portions toward the abutment portion, and the abutment portion and the multiple matching portions are used to correspond to the target workpiece, so that when the upper mold pushes the movable portion to the forming position, the abutment portion and the multiple matching portions extrude the blank into the target workpiece.

[0011] Optionally, the fixed part is provided with two first matching parts corresponding to the upper mold, and the movable part is provided with second matching parts corresponding to the upper mold, wherein the two first matching parts are used to correspond to the bending area setting of the target workpiece, and the second matching parts are used to correspond to the concave area setting of the target workpiece.

[0012] Optionally, the distance between the initial position and the forming position is H;

[0013] The two first matching portions include a plurality of forming surfaces arranged corresponding to the bending area. There is a height difference between different forming surfaces, and the maximum value of the height difference is h, and h<H.

[0014] Optionally, the reset member includes a plurality of elastic members, and the plurality of elastic members are respectively arranged between the movable portion and the forming groove to elastically support the two movable portions in the up and down directions.

[0015] Optionally, the bottom of the forming groove is provided with a plurality of mounting grooves with openings facing upwards;

[0016] The reset member includes a plurality of springs, which are respectively installed in the plurality of installation slots, and each of the springs has a supporting portion extending out of the installation slot to elastically support the movable portion to the initial position.

[0017] Optionally, the lower mold further includes a limiting member movably mounted on the base in an up-down direction, and the limiting member is connected to the movable part to limit the upward movement of the movable part when the movable part is in the initial position.

[0018] Optionally, an insertion groove with an upward opening is provided at the bottom of the mounting groove, the insertion groove having a first section close to the movable portion and a second section away from the movable portion, the first section being retracted relative to the second end to form a limiting step at the connection between the first section and the second section;

[0019] The limiting member is movably arranged in the insertion slot, and the limiting member has a first end extending into the insertion slot to be connected to the movable part, and a second end arranged relative to the first end. The limiting member is provided with a limiting block at the second end, and the limiting block is used to abut against the limiting step when the limiting member moves upward.

[0020] Optionally, the base is provided with an installation area for installing the blank and a positioning member arranged around the periphery of the installation area, and the positioning member is used to position the blank in the installation area.

[0021] The present invention further provides a sheet metal manufacturing system, comprising the mold as described in any one of the above items, wherein the mold comprises:

[0022] The base is provided with a forming groove opening upward;

[0023] The lower mold comprises a movable portion arranged in the molding groove, two fixed portions fixedly arranged on both sides of the movable portion, and a reset member provided on the base. The movable portion is movably installed in the molding groove in the vertical direction and has an initial position close to the molding notch portion and a molding position away from the molding notch portion during the movement. The movable portion is used to jointly support the blank with the two fixed portions in the initial position. The reset members are respectively connected to the movable portions to reset the two movable portions from the molding position to the initial position.

[0024] an upper die, which is arranged above the base relative to the lower die and is movable in the up-down direction, and is used to push the movable portion to the forming position when moving downward, so as to extrude the blank together with the lower die to form the blank; and

[0025] A driving member is connected to the upper die for driving the upper die to move in an up-down direction.

[0026] In the technical solution of the present invention, a portion of the lower die is set as the movable part that is movably installed, and the other portion is set as the fixed part that is fixedly installed, so that during molding, the upper die will first contact the movable part when it moves downward, and then push the movable part to the molding position. In the molding position, the upper die and the fixed part will also be tightly pressed. During the movement of the movable part, the area on the blank corresponding to the movable part will bend accordingly, and the blank will also move closer to the area where the bending parts are concentrated, so that the formed sheet metal has sufficient material extension at the bending parts. In conventional molds, the upper die and the lower die are fixed, and the upper die and the movable part press the blank before moving downward. Therefore, the blank has almost no movement during the molding process. In the present invention, the blank will move adaptively due to the movement of the movable part, thereby avoiding tearing.

[0027] It should be noted that the number of the fixed parts is not necessarily two, and the movable part is not necessarily arranged between the two fixed parts. The number and position relationship of the movable parts and the fixed parts are set according to the corresponding target workpiece's own structure and can be adjusted according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0029] Figure 1 A schematic cross-sectional view of an embodiment of a mold provided by the present invention;

[0030] Figure 2 for Figure 1 A schematic cross-sectional view of the middle mold at another angle;

[0031] Figure 3 for Figure 1 A schematic cross-sectional view of the middle mold at another angle;

[0032] Figure 4 for Figure 1 Schematic diagram of the structure of the target workpiece corresponding to the mold.

[0033] Description of Figure Numbers:

[0034] Label name Label name 100 mold 1 base 11 Molding groove 12 Positioning parts 13 Mounting slot 2 lower die 21 Activities Department 211 Second matching part 22 Fixed part 221 First matching part 222 Molding surface 23 reset piece 231 spring 232 Support part 3 Socket 31 Paragraph 1 32 Second paragraph 33 Limiting steps 4 Limiting parts 41 First End 42 Second end 43 Limit block 5 Upper mold 51 Butt part 200 Blank 300 Target artifact

[0035] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] Sheet metal parts of various types are widely used in today's machinery. The more complex the sheet metal structure, the more difficult it is to manufacture, often requiring multiple steps to fully form it. This is because when sheet metal structures are complex and have many bends, the risk of tearing the blank during forming increases, so different parts of the sheet metal need to be formed separately.

[0040] Sheet metal manufacturing systems mainly rely on molds to manufacture sheet metal parts. When sheet metal parts have many forming processes, the sheet metal manufacturing system will require multiple sets of molds to complete the manufacturing, which makes the cost too high and the process complicated.

[0041] In view of this, the present invention provides a sheet metal manufacturing system, wherein the sheet metal manufacturing system includes a mold. Any sheet metal manufacturing system including the mold belongs to the sheet metal manufacturing system of the present invention. Figures 1 to 4 This is an embodiment of the mold provided by the present invention.

[0042] See also Figures 1 to 3The present invention provides a mold 100, which includes: a base 1, a lower mold 2, an upper mold 5 and a driving member. The base 1 is provided with a molding groove 11 that opens upward; the lower mold 2 includes a movable portion 21 arranged in the molding groove 11, two fixed portions 22 fixed on both sides of the movable portion 21 and a reset member 23 provided on the base 1. The movable portion 21 is movably installed in the molding groove 11 along the vertical direction, and has an initial position close to the notch of the molding groove 11 and a molding position away from the mouth of the molding groove 11 during the movement. The movable portion 21 is used to bear the load together with the two fixed portions 22 in the initial position. The blank 200, the reset member 23 is connected to the movable part 21, and is used to reset the movable part 21 from the molding position to the initial position; the upper mold 5 is arranged above the base 1 relative to the lower mold 2, and the upper mold 5 is movably arranged in the up and down directions, and the upper mold 5 is used to push the movable part 21 to the molding position when moving downward, so as to extrude the blank 200 together with the lower mold 2 to form; the driving member is drivingly connected to the upper mold 5, and the driving member is used to drive the upper mold 5 to move in the up and down directions.

[0043] In the present invention, the up-down direction is a relative direction, and the up-down direction is the relative direction of the upper mold 5 and the lower mold 2 , wherein the direction in which the upper mold 5 is located is upward.

[0044] In the technical solution of the present invention, a portion of the lower die 2 is configured as the movable portion 21, which is movably mounted, and another portion is configured as the two fixed portions 22, which are fixedly mounted. This allows the upper die 5 to first contact the movable portion 21 when it moves downward during forming, and then push the movable portion 21 to the forming position. In the forming position, the upper die 5 and the two fixed portions 22 are also in close contact. During the movement of the movable portion 21, the area of the blank 200 corresponding to the movable portion 21 will bend, and the blank 200 will also move toward the area where the bending parts are concentrated, thereby ensuring that the formed sheet metal part has sufficient material extension at the bending parts. In a conventional mold 100, the upper mold 5 and the lower mold 2 are both fixed, and the pressing part of the movable part 21 is a relatively flat surface. In the initial position, the upper mold 5 and the movable part 21 press the blank 200 and then move downward. Therefore, the blank 200 has almost no movement during the molding process. In the present invention, the molding area is redivided, and the pressing part of the movable part 21 is in a "J" shape. In the initial position, the upper mold 5 and the movable part 21 do not press the blank 200, and only the two top ends of the pressing part of the movable part 21 contact the blank 200. The blank 200 will perform adaptive movement due to the movement of the movable part 21, thereby avoiding molding tearing.

[0045] It should be noted that the number of the movable parts 21 is not necessarily one, and the two fixed parts 22 are not necessarily arranged on both sides of the movable part 21. The number and position relationship of the movable part 21 and the two fixed parts 22 are set according to the corresponding target workpiece 300's own structure, and can be adjusted according to actual needs.

[0046] Further, see Figures 1 to 4 The upper mold 5 is provided with a contact portion 51 toward the lower mold 2, and the movable portion 21 and the two fixed portions 22 are respectively provided with matching portions toward the abutment 51. The abutment 51 and the multiple matching portions are used to correspond to the target workpiece 300, so that when the upper mold 5 pushes the movable portion 21 to the forming position, the abutment 51 and the multiple matching portions extrude the blank 200 into the target workpiece 300.

[0047] In this embodiment, the abutment portion 51 is actually the contact portion of the upper mold 5 for contacting the lower mold 2, and the matching portion is the contact portion of the lower mold 2 for contacting the upper mold 5. When the upper mold 5 moves toward the lower mold 2, the abutment portion 51 will gradually approach the three matching portions. During the forming process, the abutment portion 51 will first contact the matching portions on the two movable portions 21, and push the two matching portions to the forming position, at which time it will also contact the matching portions on the two fixed portions 22. The shapes of the abutment portion 51 and the matching portion are set according to the target workpiece 300, so that when the abutment portion 51 contacts the matching portion, it will squeeze the blank 200 between the two and form it into the target workpiece 300.

[0048] Furthermore, the two fixed parts 22 are provided with two first matching parts 221 corresponding to the upper mold 5, and the movable part 21 is provided with second matching parts 211 corresponding to the upper mold 5, wherein the two first matching parts 221 are used to correspond to the bending area setting of the target workpiece 300, and the second matching parts 211 are used to correspond to the concave area setting of the target workpiece 300.

[0049] In this embodiment, during the molding process, the movable portion 21 moves downward a certain distance, so the portion of the blank 200 on the two fixed portions 22 will bend, while the portion on the movable portion 21 will not bend significantly. Therefore, the two fixed portions 22 are more suitable for being positioned to correspond to the bending area of the target workpiece 300, while the movable portion 21 is more suitable for being positioned to correspond to the concave area of the target workpiece 300, thereby achieving a better molding effect of the lower mold 2.

[0050] Furthermore, the distance between the initial position and the forming position is H; the two first matching parts 221 include multiple forming surfaces 222 arranged corresponding to the bending area, and there is a height difference between different forming surfaces 222, the maximum value of the height difference is h, and h<H.

[0051] In this embodiment, during the molding process, the upper mold 5 initially contacts the movable portion 21 and pushes the movable portion 21 to move. The distance the movable portion 21 moves is actually the distance between the initial position and the molding position. During the movement of the movable portion 21, portions of the two fixed portions 22 also come into contact with the blank 200. As the movable portion 21 moves, the upper mold 5 also moves closer to the two fixed portions 22.

[0052] When the target workpiece 300 has a complex structure, there will often be multiple planes of different heights, and this requires that different molding surfaces 222 be set on the two fixed parts 22 for molding respectively, so there will be a certain height difference between the multiple molding surfaces 222. However, it should be noted that the height difference between the multiple molding surfaces 222 cannot be too large, otherwise when the movable part 21 starts to move, the highest molding surface 222 of the two fixed parts 22 has already contacted the upper mold 5, and when the movable part 21 has moved from the initial position to the molding position, the lowest molding surface 222 may not have yet contacted the upper mold 5, which may lead to molding failure. Therefore, the maximum value of the height difference should be less than the distance between the initial position and the molding position, so as to ensure the molding success rate.

[0053] Further, see Figures 1 to 3 The reset member 23 includes a plurality of elastic members, and the plurality of elastic members are respectively arranged between the movable portion 21 and the forming groove 11 to elastically support the movable portion 21 in the up and down directions.

[0054] In this embodiment, the elastic member is arranged between the movable part 21 and the forming groove 11, and elastically supports the two movable parts 21 in the upper and lower directions, so that when the upper mold 5 pushes the movable part 21 to move, an elastic force can be applied toward the upper mold 5, thereby clamping the blank 200 between the movable part 21 and the upper mold 5, preventing the blank 200 from being dislocated to a large extent during this process.

[0055] Furthermore, the bottom of the forming groove 11 is provided with a plurality of mounting grooves 13 with openings facing upward; the reset member 23 includes a plurality of springs 231, and the plurality of springs 231 are respectively installed in the plurality of mounting grooves 13, and each of the springs 231 has a supporting portion 232 extending out of the mounting groove 13 to elastically support the movable portion 21 to the initial position.

[0056] In this embodiment, a plurality of springs 231 are provided in a plurality of mounting grooves 13, and elastically support the movable portion 21 through the support portion 232. When the upper mold 5 pushes against the movable portion 21, the plurality of springs 231 are compressed, pressing the support portion 232 into the mounting groove 13. When the movable portion 21 moves to the molding position, the movable portion 21 abuts against the bottom of the molding groove 11, and the support portion 232 is completely pressed into the mounting groove 13. When the upper mold 5 rises, the elastic force of the spring 231 itself pushes the movable portion 21 upward to the initial position, completing the reset. The spring 231 is generally configured as a nitrogen spring 231, thereby providing an elastic force that can meet industrial production requirements.

[0057] Furthermore, when the upper mold 5 rises, the reset member 23 pushes the movable portion 21 upward to the initial position, completing the reset. During the reset process, the reset member 23 may push the movable portion 21 too far, affecting subsequent molding. Therefore, in this embodiment, the lower mold 2 also includes a limiter 4 mounted on the base 1 in a vertically movable manner. The limiter 4 is connected to the movable portion 21 to limit its upward movement when the movable portion 21 is in the initial position.

[0058] In this embodiment, the limiting member 4 can limit the upward movement of the movable part 21 when the movable part 21 is in the initial position, and the reset member 23 will apply an upward reset force to the movable part 21. The two can work together to fix the movable part 21 in the initial position, which is convenient for the next molding.

[0059] Specifically, the bottom of the mounting groove 13 is provided with an insertion groove 3 with an upward opening, and the insertion groove 3 has a first section 31 close to the movable part 21 and a second section 32 away from the movable part 21, and the first section 31 is retracted relative to the second end 42 to form a limiting step 33 at the connection between the first section 31 and the second section 32; the limiting member 4 is movably provided in the insertion groove 3, and the limiting member 4 has a first end 41 extending to the insertion groove 3 to be connected to the movable part 21, and a second end 42 arranged relative to the first end 41, and the limiting member 4 is provided with a limiting block 43 at the second end 42, and the limiting block 43 is used to press against the limiting step 33 when the limiting member 4 moves upward.

[0060] In this embodiment, the limit block 43 can move freely within the second section 32, but cannot enter the first section 31 which is narrower than the second section 32. Instead, it will abut against the limit step 33 and get stuck. The first end 41 of the limit member 4 is connected to the movable portion 21, so when the movable portion 21 moves upward, the limit member 4 will move upward together. When the movable portion 21 moves to the initial position, the second end 42 of the limit member 4 will move upward to a position close to the limit step 33. At this time, the limit block 43 provided at the second end 42 will abut against the limit step 33 and get stuck, making it unable to continue to move upward. In this way, the upward movement of the movable portion 21 is limited when the movable portion 21 is in the initial position, facilitating the next molding.

[0061] Furthermore, the base 1 is provided with an installation area for installing the blank 200 and a positioning member 12 arranged around the periphery of the installation area, and the positioning member 12 is used to position the blank 200 to the installation area.

[0062] In this embodiment, the positioning member 12 is provided on the outer periphery of the installation area to confine the blank 200 within the installation area, so that the installation position of the blank 200 can be quickly located by the positioning member 12 when the blank 200 is filled before each molding, thereby facilitating the installation of the blank 200.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A mold, characterized in that: include: The base is provided with a forming groove opening upward; The lower mold comprises a movable portion arranged in the molding groove, two fixed portions fixedly arranged on both sides of the movable portion, and a reset member provided on the base. The movable portion is movably installed in the molding groove in the vertical direction and has an initial position close to the molding notch portion and a molding position away from the molding notch portion during the movement. The movable portion is used to jointly carry the blank with the two fixed portions in the initial position. The reset member is connected to the movable portion and is used to reset the movable portion from the molding position to the initial position. an upper die, which is arranged above the base relative to the lower die and is movable in the up-down direction, and is used to push the movable portion to the forming position when moving downward, so as to extrude the blank together with the lower die to form the blank; and A driving member is connected to the upper die, and is used to drive the upper die to move in an up-down direction; The upper die is provided with an abutting portion facing the lower die, and the movable portion and the two fixed portions are respectively provided with matching portions facing the abutting portion. The abutting portion and the plurality of matching portions are configured to correspond to a target workpiece, so that when the upper die pushes the movable portion to the forming position, the abutting portion and the plurality of matching portions extrude the blank into the target workpiece. The two fixed parts are provided with two first matching parts corresponding to the upper mold, and the movable parts are respectively provided with second matching parts corresponding to the upper mold, wherein the two first matching parts are used to correspond to the bending area setting of the target workpiece, and the second matching parts are set in a stepped manner, so that the second matching parts are used to correspond to the concave area setting of the target workpiece.

2. The mold according to claim 1, wherein: The distance between the initial position and the forming position is H; The two first matching portions include a plurality of forming surfaces arranged corresponding to the bending area. There is a height difference between different forming surfaces, and the maximum value of the height difference is h, and h<H.

3. The mold according to claim 1, wherein: The restoring member includes a plurality of elastic members, and the plurality of elastic members are respectively arranged between the movable portion and the forming groove to elastically support the movable portion in the up and down directions.

4. The mold according to claim 1, wherein: The bottom of the forming groove is provided with a plurality of mounting grooves with openings facing upwards; The reset member includes a plurality of springs, which are respectively installed in the plurality of installation slots, and each of the springs has a supporting portion extending out of the installation slot to elastically support the movable portion to the initial position.

5. The mold according to claim 1, wherein: The lower mold further includes a limiting member movably mounted on the base in an up-down direction, and the limiting member is connected to the movable part to limit the upward movement of the movable part when the movable part is in the initial position.

6. The mold according to claim 5, characterized in that: An insertion groove with an upward opening is provided at the bottom of the forming groove, the insertion groove having a first section close to the movable portion and a second section away from the movable portion, the first section being retracted relative to the second section to form a limiting step at the connection between the first section and the second section; The limiting member is movably arranged in the insertion slot, and the limiting member has a first end extending into the insertion slot to be connected to the movable part, and a second end arranged relative to the first end. The limiting member is provided with a limiting block at the second end, and the limiting block is used to abut against the limiting step when the limiting member moves upward.

7. The mold according to claim 1, wherein: The base is provided with an installation area for installing the blank and a positioning member arranged around the periphery of the installation area, and the positioning member is used to position the blank to the installation area.

8. A sheet metal manufacturing system, characterized in that: Comprising the mold according to any one of claims 1 to 7.

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