Aluminum alloy box punch forming equipment

Abstract

The invention discloses an aluminum alloy box punch forming device, which belongs to the field of trunk processing equipment, and comprises a male die and a female die, the edge of the bottom end of the male die is provided with a fillet, the female die is of a frame-shaped structure, the female die is positioned under the male die, and the end edge of the top end opening of the female die is provided with a fillet; the four side faces of the female die are each connected with a driving arm, each driving arm is provided with a positioning boss face attached to the side face of the aluminum alloy plate, each driving arm is connected with a driving mechanism, and the driving mechanisms drive the driving arms to be close to each other to be inserted into inserting holes in the four side faces of the female die. The driving arm is driven to move upwards so that the female die can be sleeved on the outer side of the male die in an axial sliding fit mode, and an aluminum alloy material plate located between the female die and the male die is stamped into a rectangular aluminum alloy box body. The aluminum alloy box can be rapidly and reliably subjected to punch forming, and stable and reliable quality is ensured.

Description

Technical Field

[0001] The present invention relates to the field of luggage case processing and manufacturing equipment, in particular to aluminum alloy case stamping and forming equipment. Background Art

[0002] An aluminum alloy box is a storage device that is stamped and formed. For example, the common aluminum alloy suitcase is widely used in daily life. One of the main processes in its production is stamping. The two halves of the box are each pressed using a rectangular punch and a die with a rectangular groove. During processing, the cut aluminum alloy sheet is usually placed flat on the notch of the die, and then the punch is quickly pressed downward into the die, and the aluminum alloy sheet is then stamped into a box-shaped box.

[0003] During the above processing, it is not easy to place the aluminum alloy sheet in the middle of the mold, and during the initial contact during stamping, the aluminum alloy sheet may be squeezed and shifted, resulting in unqualified shape and size of the formed aluminum alloy box. Moreover, although the structure of this stamping equipment is very simple and the operation is simple, during the forming process of the aluminum alloy box, the entire aluminum alloy sheet is instantly squeezed and depressed into a rectangular box structure, which is very prone to local wrinkles or even breakage. In addition, since the formed aluminum alloy box is embedded in the die, it is not convenient to demold, and the box is difficult to remove from the die. A specially designed demolding pin is required. When pushing the aluminum alloy box upward during demolding, it may cause the pushed part to become concave, affecting the forming quality, and manual correction is required. Summary of the Invention

[0004] In view of the above introduction to the current state of the art, the purpose of the present invention is to provide an aluminum alloy box stamping and forming equipment to better solve the technical problems of unstable forming quality, easy wrinkling and local damage of aluminum alloy suitcases during stamping and forming.

[0005] To achieve the above-mentioned purpose, the present invention adopts an aluminum alloy box stamping forming equipment, including a punch and a die, the bottom edge of the punch has a chamfered corner, the die is a frame-shaped structure, the die is located directly below the punch and the end edge of its top port has a chamfered corner; the four sides of the die are each connected to a driving arm, and the driving arm is provided with a positioning boss surface that fits with the side of the aluminum alloy sheet. The driving arm is connected to a driving mechanism, and the driving mechanism drives the driving arms to move closer to each other and insert into the jacks on the four sides of the die, so as to drive the driving arms to move upward and make the die axially slide and fit on the outside of the punch, and punch the aluminum alloy sheet between the two into a rectangular aluminum alloy box.

[0006] Furthermore, the driving mechanism includes four driving posts arranged at the left, right, front and back, each driving post being threadedly mounted in a threaded sleeve. When the driving stud rotates, all the driving arms move closer to each other.

[0007] Furthermore, the driving arm is The structure has one end for horizontally inserting into the bottom of the jack, and the other end is coaxially rotatably connected to the driving column.

[0008] Furthermore, the positioning boss surface is a side surface of a prism with an isosceles trapezoidal cross section, and the side surface is the surface where the shorter base of the isosceles trapezoid is located.

[0009] Furthermore, a rotation limiting block is fixed on the horizontal arm section at the lower part of the driving arm. The rotation limiting block is installed on a base in a sliding manner. The die is placed flat on the base.

[0010] Furthermore, a plurality of positioning holes are provided on the base, and a plurality of positioning pins are fixed to the bottom surface of the die. When the positioning pins are inserted into the positioning holes, the convex die and the concave die are aligned vertically.

[0011] Furthermore, a stud with a trapezoidal thread is vertically fixed in the center of the top of the punch, and the stud is fixedly installed; the driving mechanism also includes a main body for the stud to pass through without contact, the main body is fixedly connected to the threaded sleeve, and the driving post is rotatably inserted around the four sides of the main body; a drive disc cover is also rotatably mounted on the upper end surface of the main body, and the central thread of the drive disc cover is fitted on the stud, and an annular end gear is coaxially mounted on the bottom of the drive disc cover;

[0012] The above-mentioned main body of the present invention also has four driven gears rotatably provided therein, which are meshed with the end face gears. The driven gears are installed on the driving column through the sliding fit of the key and the keyway. When the driven gears rotate, the driving column can rotate and move axially at the same time to allow the driving arm to be inserted into the side of the die.

[0013] Furthermore, a key is fixedly provided on the inner side wall of the shaft hole of the driven gear, and the keyway is provided on the driving column.

[0014] Furthermore, only when the driving column is disengaged from the threaded engagement with the threaded sleeve, the driving arm is inserted into place on the side of the die, and only then does the positioning boss surface come into contact with the side of the aluminum alloy plate.

[0015] Furthermore, one end of the driving column inserted into the main body has a spherical groove. When the driving column and the threaded sleeve are disengaged from the thread, the spherical groove rotates with a wear-resistant steel ball fixed in the main body.

[0016] In addition, in the present invention, a top plate is vertically slidably installed on the inner side of the die, and the top plate is in a "F" shape. The top of the top plate is used to fit in contact with the bottom surface of the aluminum alloy plate, and both sides are connected to one side of the bottom of the die through a tensile spring. A guide rod is coaxially provided in the tensile spring, and the top end of the guide rod is fixed to the lower end of the die, and the top end freely passes through the side of the top plate. In the initial state, the top surface of the die is flush with the top surface of the top plate.

[0017] The aluminum alloy box stamping and forming equipment of the present invention designs the traditional die into a rectangular frame structure, which is sleeved on the outside of the fixed punch in the form of a sliding sleeve, so that when the top plate presses the aluminum alloy sheet, the outer part of the aluminum alloy sheet is squeezed upward to obtain the required aluminum alloy box. During the whole process, the side with the largest box area, that is, the bottom or front surface of the aluminum alloy box, is not prone to wrinkles or damage (for the transmission die, the larger the area of ​​the box to be formed, the more likely it is to produce local wrinkles during extrusion). Unlike the traditional movement of the punch, the present invention uses the moving die while the punch does not move, and rolls the four side edges of the aluminum alloy sheet upward to form the four side walls of the box, which is not prone to wrinkles and damage. At the same time, compared with being embedded in the die after forming, the box is easier to be pulled off from the outer surface of the punch.

[0018] In addition, in the present invention, when the die is added and moved upward, the positioning boss surface on the side of the curved arm wall can automatically push the aluminum alloy sheet to the middle position between the punch and the die, which not only can automatically position it, but also can avoid false movement due to contact or other factors during stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following are auxiliary diagrams for explaining some specific embodiments of the present invention. The drawings described are mainly the principles of the specific operation execution structure or method of some embodiments of the present invention, but this does not mean that the physical structure or operation steps of the present invention can only be as shown in the drawings.

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the matching structure between the driving mechanism and the stud;

[0022] Figure 3 This is a bottom view of the aluminum alloy box when the die moves upward;

[0023] Figure 4 A simplified top view of a drive plate cover meshing with a drive gear.

[0024] Component number description: punch 1, die 2, socket 201, drive arm 3, drive column 4, threaded sleeve 5, main body 6, smooth section 7, driven gear 8, drive disc cover 9, gear ring structure 901, threaded hole 902, base 10, rotation limit block 11, positioning pin 12, end gear 13, stud 14, key 15, keyway 16, wear-resistant steel ball 17, positioning boss surface 18, aluminum alloy plate 19, top plate 20, tensile spring 21, guide rod 22, transmission gear 23. DETAILED DESCRIPTION

[0025] The following is a comprehensive description of the embodiments of the present invention. Some core features of the embodiments are specifically illustrated in the accompanying drawings. In the drawings, the same or similar reference numerals represent the same or similar technical features, or structures, steps, or processes with similar functions. Other embodiments substituted by ordinary technicians based on these embodiments without requiring creative work also fall within the scope of protection of the present invention.

[0026] See also Figure 1 The aluminum alloy box stamping forming equipment shown in the figure has a punch 1 and a die 2, the same as the existing forming equipment. The bottom edge of the punch 1 has a rounded corner to form the rounded corner of the box. The special feature of this embodiment is that the die 2 is as follows Figure 3 The frame structure shown is a rectangular frame structure, rather than a traditional trough structure similar to a rectangular water tank. The die 2 is located directly below the punch 1 and has a rounded edge at its top end so as to cooperate with the punch 1 to form the desired aluminum alloy box. For the cooperative driving of the punch 1 and the die 2, in this embodiment, a driving arm 3 is connected to each of the four sides of the die 2, and as shown in FIG. Figure 1 As shown, the driving arm 3 is provided with a positioning boss 18 that fits with the side of the aluminum alloy sheet 19. The positioning boss 18 is a vertically arranged smooth plane that is in smooth contact with the side of the aluminum alloy sheet 19, so that the aluminum alloy sheet 19 can be placed flat on the die 2 at the beginning of processing without manual alignment. In this embodiment, the driving arm 3 is connected to a driving mechanism. The driving mechanism allows the four driving arms 3 to move closer to each other when the driving arm 3 moves, that is, they all move toward the center of the die 2. For example, the two opposite driving arms 3 move toward each other, and the two opposite driving arms 3 move toward each other, so that the ends of the four driving arms 3 are inserted into the die 2. Figure 3The sockets 201 on the four sides of the middle die 2 realize the centering of the die 2 and the punch 1, so as to drive the driving arm 3 to move upward, so that the die 2 can be axially slidably fitted on the outside of the punch 1. In the process of the die 2 moving vertically along the outside of the punch 1, the aluminum alloy sheet 19 between the two is punched into a rectangular aluminum alloy box. Compared with the traditional method of directly pressing the punch 1 into the rectangular trough-shaped lower die, the forming quality is better and it is less likely to have local wrinkles and breakage. In order to improve the stability and reliability of the forming quality, during the stamping process, an upward pushing pressure is also applied to the aluminum alloy sheet 19 to squeeze the bottom of the box to prevent it from bulging or warping. Specifically, in this embodiment, Figure 1 A top plate 20 is also installed vertically and slidably on the inner side of the die 2. The top plate 20 is in a "F"-shaped structure with L-shaped sides and a flat rectangular plate in the middle. The top of the top plate 20, that is, the rectangular plate, is used to fit in contact with the bottom surface of the aluminum alloy sheet 19 so that the aluminum alloy sheet 19 can be extruded in subsequent processing. The two sides are connected to the bottom side of the die 2 by a tension spring 21. A guide rod 22 is coaxially provided in the tension spring 21. Figure 1 The top end of the guide rod 22 is fixed to the lower end of the die 2, and its top end slides freely through the side of the top plate 20, and in the initial state, the top surface of the die 2 is flush with the top surface of the top plate 20 to place the aluminum alloy sheet 19, so that during stamping, all the driving arms 3 move synchronously to clamp the die 2 and make the aluminum alloy sheet 19 placed on the die 2 automatically in the middle position between the punch 1 and the die 2, realizing automatic alignment and installation of the aluminum alloy sheet 19, and then when the driving arms 3 move upward, the top plate 20 firmly supports or presses the aluminum alloy sheet 19, and the outer die 2 moves upward along the four sides of the punch 1, squeezing the four sides of the aluminum alloy sheet 19, and then forming the side wall of the aluminum alloy box, which effectively avoids local wrinkling, warping or damage of the aluminum alloy box during stamping.

[0027] More specifically, if Figure 1 As shown, the driving mechanism in this embodiment mainly includes four driving posts 4 arranged at the left, right, front and back. Each driving post 4 is threadedly mounted in a threaded sleeve 5. When the driving stud 14 rotates, it moves axially through the thread pair transmission action with the threaded sleeve 5, thereby realizing that all the driving arms 3 are brought closer to each other. Specifically in the production, the driving arm 3 is The drive column 4 has a shape of a structure, one end of which is used to be horizontally inserted into the bottom of the hole 201, and the other end of which is coaxially connected to the drive column 4. During manufacturing, the end of the drive column 4 can be rotatably installed within the end face of the drive arm 3. When the drive column 4 rotates and moves axially, the drive arm 3 connected to it is pulled and inserted into the corresponding side surface of the die 2.

[0028] As one of the specific implementation structures, Figure 1As shown, the positioning boss 18 mentioned above can be a side surface of a prism with an isosceles trapezoidal cross-section. This side surface is the surface where the shorter base of the isosceles trapezoid is located, so that the aluminum alloy sheet 19 can bend more freely when bent. In addition, a rotation limiter 11 needs to be fixed to the horizontal arm section at the bottom of the driving arm 3. The rotation limiter 11 is slidably mounted on a base 10. A rectangular groove is machined on the base 10 to cooperate with the rotation limiter 11. The rotation limiter 11 is inserted into the rectangular groove, thereby limiting the rotation of the driving arm 3 and the main body 6 mentioned below around the stud 14. The die 2 is placed flat on the base 10. In order to position the die 2 at the initial moment, a number of positioning holes can be provided on the base 10. Correspondingly, a number of positioning pins 12 are fixed to the bottom surface of the die 2. When the positioning pins 12 are inserted into the positioning holes, the punch 1 and the die 2 are directly opposite each other, so that the installation is centered.

[0029] In this embodiment, a stud 14 with a trapezoidal thread is vertically fixed in the center of the top of the punch 1. The stud 14 is fixedly installed, for example, fixedly installed on a frame. The driving mechanism also includes a main body 6 for the stud 14 to pass through without contact. During specific production, the main body 6 is fixedly connected to the threaded sleeve 5 as a whole, so that the driving column 4 can rotate in the threaded sleeve 5. The smooth section 7 of the driving column 4 is rotatably inserted around the main body 6. At the same time, the upper end face of the main body 6 of this embodiment is also rotatably installed with a drive disk cover 9. The central thread of the drive disk cover 9 is fitted on the stud 14, and an annular end face gear 13 is coaxially installed on its bottom. In specific practice, it can be as shown Figure 4 As shown, there is a threaded hole 902 in the center of the drive disc cover 9, and the inner wall of the threaded hole 902 is also provided with a trapezoidal thread to connect with the threaded sleeve 5 of the stud 14 to achieve high-strength thread transmission. Figure 4 The edge of the drive disc cover 9 is a gear ring structure 901, which can be engaged with a transmission gear 23, and the transmission gear 23 is connected to a motor to realize the rotation of the drive disc cover 9.

[0030] In order to realize linkage control, Figure 1-Figure 2 As shown, four driven gears 8 meshing with the end face gears 13 are rotatably provided in the main body 6. The driven gear 8 is mounted on the driving column 4 through the sliding fit of the key 15 and the keyway 16. For example, the inner side wall of the shaft hole of the driven gear 8 is fixedly provided with a key 15, and the driving column 4 is provided with a keyway 16. When the driven gear 8 rotates, the driving column 4 can rotate and move axially at the same time, so that the driving arm 3 is inserted into the side of the die 2, and in the process of movement, the relative stability of the movement is maintained due to the threaded fit of the threaded sleeve 5.

[0031] In particular, in the specific implementation, the driving column 4 is not engaged with the threaded sleeve 5 until the driving arm 3 is inserted into the side of the die 2, that is, inserted to the bottom, and the positioning boss 18 is not in contact with the side of the aluminum alloy plate 19. In this way, when the driving column 4 continues to rotate, the driving arm 3 will not continue to move because the threaded engagement has been disengaged, thus avoiding jamming. When the driving arm 3 moves into place, as shown in FIG. Figure 2 As shown, a spherical groove is provided at one end of the driving column 4 inserted into the main body 6. When the driving column 4 is disengaged from the threaded engagement with the threaded sleeve 5, the spherical groove rotates with a wear-resistant steel ball 17 fixed in the main body 6, so that the driving column 4 can rotate flexibly and reliably in situ.

[0032] The above series of specific implementation details are merely some preferred embodiments of the present invention and cannot be used to limit the scope of protection of the claims of the present invention. Ordinary technicians in this field can simply change the design ideas based on their understanding of the above embodiments and reference to the basic principles recorded in the claims of the present invention. However, these changed designs still fall within the scope of protection of the invention.

Claims

1. A stamping and forming device for an aluminum alloy box, comprising a punch (1) and a die (2), wherein the bottom edge of the punch (1) has a rounded corner, and is characterized in that: The invention also includes that the die (2) is a frame-shaped structure, the die (2) is located directly below the punch (1) and the end edge of its top port has a rounded corner; the four side surfaces of the die (2) are connected to a driving arm (3), the driving arm (3) is provided with a positioning boss (18) that fits with the side surface of the aluminum alloy material plate (19), the driving arm (3) is connected to a driving mechanism, and the driving mechanism drives the driving arms (3) to move closer to each other and insert them into the sockets (201) on the four side surfaces of the die (2), so as to drive the driving arms (3) to move upward and make the die (2) axially slide and fit on the outside of the punch (1), and punch the aluminum alloy material plate (19) between the two into a rectangular aluminum alloy box.

2. The aluminum alloy box stamping forming equipment according to claim 1, characterized in that: The driving mechanism comprises four driving columns (4) arranged at the left, right, front and back sides. Each driving column (4) is threadedly mounted in a threaded sleeve (5). When the driving stud (14) rotates, all the driving arms (3) move closer to each other.

3. The aluminum alloy box stamping forming equipment according to claim 2, characterized in that: The driving arm (3) is The structure has one end for horizontally inserting into the bottom of the insertion hole (201), and the other end is coaxially rotatably connected to the driving column (4).

4. The aluminum alloy box stamping forming equipment according to claim 3, characterized in that: The positioning boss surface (18) is a side surface of a prism with an isosceles trapezoidal cross section, and the side surface is the surface where the shorter base of the isosceles trapezoid is located.

5. The aluminum alloy box stamping forming equipment according to claim 3, characterized in that: A rotation limiting block (11) is fixed on the horizontal arm section at the lower part of the driving arm (3). The rotation limiting block (11) is mounted on a base (10) in a sliding manner. The die (2) is placed flat on the base (10).

6. The aluminum alloy box stamping forming equipment according to claim 5, characterized in that: The base (10) is provided with a plurality of positioning holes, and the bottom surface of the die (2) is fixed with a plurality of positioning pins (12). When the positioning pins (12) are inserted into the positioning holes, the convex die (1) and the die (2) are aligned vertically.

7. The aluminum alloy box stamping forming equipment according to claim 2, characterized in that: A stud (14) with a trapezoidal thread is vertically fixed at the center of the top of the punch (1), and the stud (14) is fixedly installed; the driving mechanism also includes a main body (6) for the stud (14) to pass through without contact, the main body (6) is fixedly connected to the threaded sleeve (5), and the driving column (4) is rotatably inserted around the main body (6); a driving disc cover (9) is also rotatably installed on the upper end surface of the main body (6), and the central thread of the driving disc cover (9) is fitted on the stud (14), and an annular end face gear (13) is coaxially installed on the bottom of the main body (6); Four driven gears (8) meshing with the end face gears (13) are rotatably provided in the main body (6). The driven gears (8) are mounted on the driving column (4) through the sliding fit of the key (15) and the keyway (16). When the driven gears (8) rotate, the driving column (4) can simultaneously rotate and move axially, so that the driving arm (3) is inserted into the side surface of the die (2).

8. The aluminum alloy box stamping forming equipment according to claim 7, characterized in that: When the driving column (4) and the threaded sleeve (5) are disengaged from the threaded engagement, the driving arm (3) is inserted into the side of the die (2) and the positioning boss surface (18) is in contact with the side of the aluminum alloy plate (19).

9. The aluminum alloy box stamping forming equipment according to claim 8, characterized in that: One end of the driving column (4) inserted into the main body (6) has a spherical groove. When the driving column (4) and the threaded sleeve (5) are disengaged from the threaded engagement, the spherical groove rotates with a wear-resistant steel ball (17) fixed in the main body (6).

10. The aluminum alloy box stamping forming equipment according to claim 1, characterized in that: A top plate (20) is vertically slidably installed on the inner side of the die (2), and the top plate (20) is in a "F" shape. The top of the top plate (20) is used to fit in contact with the bottom surface of the aluminum alloy plate (19), and both sides are connected to one side of the bottom of the die (2) through a tension spring (21). A guide rod (22) is coaxially provided inside the tension spring (21). The top of the guide rod (22) is fixed to the lower end of the die (2), and the top freely passes through the side of the top plate (20). In the initial state, the top surface of the die (2) is flush with the top surface of the top plate (20).

Images