Computer lower cover arc surface die extrusion molding structure and die

Abstract

The invention discloses an arc-surface die extrusion molding structure of a computer lower cover in the technical field of computer lower cover stamping. The structure comprises a stamping frame, a concave die is installed on the stamping frame, a structurally integrated molding cavity is arranged inside the concave die, arc edges are arranged around the molding cavity, a slide frame is slidably connected with a position limit located just above the concave die on the stamping frame, a structurally integrated male die is fixedly connected to the lower end of the slide frame, a side surface of the male die close to the concave die is arranged around an arc edge, a magnetic ejection sheet is slidably connected with the upper and lower limit inside the concave die, an ejection rod penetrated by the magnetic ejection sheet is slidably connected with the concave die horizontally, a guide rail column is fixedly connected to the magnetic ejection sheet, a guide rail groove of the limited sliding guide rail column is provided on the ejection rod, and a wedge is slidably connected with the upper limit of the concave die. The invention can realize the integrated molding of the computer lower cover and is convenient for taking out from the die.

Description

Technical Field

[0001] The invention relates to the technical field of computer lower cover stamping, in particular to a computer lower cover arc surface die extrusion molding structure and a die. Background Art

[0002] The computer lower cover is a snap-on cover at the bottom of the computer, which can be removed. Generally, the lower cover structure of the computer is integrated. In order to facilitate installation with the computer body, there will be upwardly bent parts on all sides, so as to facilitate snap-on or screw installation. At present, in order to ensure the appearance and the friction comfort of the hand, the upwardly bent parts on all sides often adopt an arc shape. However, in order to reduce costs during the production of the lower cover parts, they are generally not directly formed into arc surfaces on all sides. Generally, a flat plate is used and then the flat plate is stamped to form arc surfaces on all sides, so as to obtain the required arc-shaped computer lower cover.

[0003] Most of the existing stamping methods use a concave and convex mold, and the computer lower cover is placed on the concave mold. During stamping, the convex mold is squeezed into the concave mold, thereby realizing the molding of the curved surface of the computer lower cover. However, after the stamping of the computer lower cover is completed, since the convex mold squeezes the computer lower cover into the concave mold, the computer lower cover is easily embedded in the inside of the concave mold, and the computer lower cover is tightly attached to the inside of the concave mold, resulting in a large friction between the two, so it is inconvenient to take it out from the concave mold. Moreover, since the computer lower cover is thin and not rigid enough, forcibly taking it out can easily cause the computer lower cover to deform, resulting in gaps after subsequent installation on the computer body, and in severe cases, it directly breaks. Summary of the invention

[0004] The technical problem of the present invention is to provide a computer lower cover arc surface mold extrusion molding structure and a mold, which can realize the integral molding of the computer lower cover and is easy to take out from the mold.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a computer lower cover arc surface mold extrusion molding structure, including a stamping frame, a concave mold is installed on the stamping frame, a structurally integrated molding cavity is arranged inside the concave mold, and arc edges are arranged around the molding cavity; a slide connected to the position limit sliding connection directly above the concave mold on the stamping frame; a structurally integrated convex mold is fixedly connected to the lower end of the slide; a side of the convex mold close to the concave mold is arranged around an arc edge; a magnetic ejection piece is slidingly connected to the upper and lower limit inside the concave mold; an ejection rod penetrated by the magnetic ejection piece is horizontally slidingly connected to the concave mold; a guide rail column is fixedly connected to the magnetic ejection piece; a guide rail groove of a limited sliding guide rail column is provided on the ejection rod; and a wedge is slidingly connected to the concave mold with an upper limit.

[0006] As a further scheme of the present invention, it includes a frame, the stamping frame is provided with a plurality of groups in a circular array with the frame axis as the center, the frame is provided with a plurality of groups of picking mechanisms which are the same in number as the stamping frames, the picking mechanism includes a turntable rotatably connected to the frame, the arc-shaped outer wall of the turntable is fixedly connected to a rotating rod, the rotating rod is fixedly connected to a negative pressure cylinder, an inner cavity groove is provided in the negative pressure cylinder, a secondary suction cylinder is limitedly and slidably connected in the inner cavity groove, the part of the secondary suction cylinder located outside the negative pressure cylinder is connected with four suction claws in a circular array with the secondary suction cylinder axis as the center, a suction cup is provided at one end of the suction claw away from the secondary suction cylinder, the frame is also provided with a transmission mechanism which can make the secondary suction cylinder move downward, and also includes a motor fixedly connected to the frame which can drive the turntable to rotate.

[0007] As a further solution of the present invention, the transmission mechanism 1 includes a guide rail rod fixedly connected to the suction claw, and a guide rail block capable of moving the guide rail rod downward is fixedly connected to the lower surface of the frame.

[0008] As a further solution of the present invention, a negative pressure device is also provided on the negative pressure cylinder, and the negative pressure device includes a piston which is limitedly slidably connected in the negative pressure cylinder, and also includes a transmission mechanism 2 which can drive the piston to slide in the negative pressure cylinder.

[0009] As a further solution of the present invention, the second transmission mechanism includes a limit frame fixedly connected to the lower surface of the rotating rod, a slider is connected to the limit sliding inside the limit frame, and also includes a pull rope fixedly connected to the upper surface of the piston. After the pull rope extends out of the negative pressure cylinder, it passes through the rotating rod and is fixedly connected to the slider. The rotating rod is provided with a plurality of pulleys for limiting the trajectory of the pull rope, and the frame is also provided with a guide structure that can cause the slider to move toward the direction close to the negative pressure cylinder.

[0010] As a further solution of the present invention, the guide structure includes a guide rail fixedly connected to the frame, and also includes a spring arranged inside the negative pressure cylinder and capable of causing the piston to perform a reset movement toward a direction close to the auxiliary suction cylinder.

[0011] As a further solution of the present invention, a stamping device is also provided on the turntable, and the stamping device includes a stamping rod fixedly connected to the turntable, and also includes a stamping rail seat fixedly connected to the slide, the slide is provided with a slide groove and a sleeve rod is fixedly connected in the slide groove, and the outer wall of the sleeve rod is provided with a spring that can reset the slide upward.

[0012] As a further solution of the present invention, a push rod capable of moving the wedge block downward is fixedly connected to the lower surface of the rotating rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Different from the prior art, the present technology is provided with a magnetic ejector plate. By pushing the wedge block, the wedge block will push the ejector rod to move into the concave mold, so that the ejector rod passes through the guide rail groove to move the guide rail column upward, so that the guide rail column will push the magnetic ejector plate to move upward, so as to facilitate the unloading of the computer lower cover after the stamping is completed. At the same time, during the stamping process, the magnetic ejector plate can support the computer lower cover, so that the middle position of the computer lower cover is not easy to deform, and before and after stamping, the magnetic ejector plate can absorb the computer lower cover, thereby playing a fixing effect and ensuring the accuracy of stamping.

[0015] 2. Different from the existing technology, it can realize automatic unloading with high efficiency, and the computer lower cover is moved by the suction cup. Since the suction cup is relatively soft, it is not easy to damage the computer lower cover. In addition, multiple suction cups are provided to steadily suck the computer lower cover, thereby ensuring that the computer lower cover is not easy to fall when it is moved out of the stamping frame position, and multiple positions are pulled, so that the computer lower cover is not easy to deform.

[0016] 3. Different from manual picking, the picking function can be automatically realized after the stamping is completed, and through the negative pressure, it will not directly contact with the computer lower cover, so it is not easy to deform the computer lower cover, thus protecting the computer lower cover well, and through the negative pressure suction method, it is also easy to take the computer lower cover out from the concave mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0020] Figure 3 It is a schematic diagram of the structure of the concave mold and the convex mold of the present invention;

[0021] Figure 4 Schematic diagram of the internal structure of the concave mold of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure inside the negative pressure cylinder of the present invention;

[0023] Figure 6 It is a schematic structural diagram of the guide rail of the present invention.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 01. Frame; 02. Punching frame; 03. Concave mold; 04. Magnetic ejector plate; 05. Turntable; 06. Rotating rod; 07. Guide rail; 08. Negative pressure cylinder; 09. Suction claw; 10. Suction cup; 11. Motor; 12. Punching rail seat; 13. Punching rod; 14. Male mold; 15. Slide; 16. Push rod; 17. Guide block; 18. Ejector rod; 19. Wedge block; 20. Arc edge 1; 21. Arc edge 2; 22. Guide groove; 23. Guide column; 24. Guide rod; 25. Pull rope; 26. Piston; 27. Auxiliary suction cylinder; 28. Inner cavity groove; 29. ​​Limiting frame; 30. Slider; 31. Sleeve rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 6 The present invention provides a technical solution: a computer lower cover arc surface mold extrusion molding structure, including a stamping frame 02, a female mold 03 is installed on the stamping frame 02, a structurally integrated molding cavity is arranged inside the female mold 03, and arc edges 21 are arranged around the molding cavity, a slide 15 is slidably connected to the position of the stamping frame 02 just above the female mold 03, a male mold 14 with an integrated structure is fixedly connected to the lower end of the slide 15, and a side of the male mold 14 close to the female mold 03 is surrounded by an arc edge 20, a magnetic ejection piece 04 is slidably connected to the female mold 03 in an upper and lower limit position, an ejection rod 18 penetrated by the magnetic ejection piece 04 is horizontally slidably connected to the female mold 03, a guide rail column 23 is fixedly connected to the magnetic ejection piece 04, a guide rail groove 22 of the limited sliding guide rail column 23 is provided on the ejection rod 18, and a wedge block 19 is slidably connected to the female mold 03 in an upper and lower limit position.

[0028] When in use, the workpiece is placed above the female mold 03. At this time, since the workpiece has not been stamped and is entirely in a flat shape, the slide 15 is then driven downward by the driving mechanism, and the slide 15 will drive the male mold 14 to move downward into the interior of the female mold 03, thereby squeezing the computer lower cover placed on the female mold 03 into the interior of the female mold 03, thereby forcing the flat-shaped computer lower cover to deform and stick to the inner wall of the female mold 03 until the entire inner wall of the female mold 03 is completely wrapped. The distance that the slide 15 descends is just enough to make the distance between the lower surface of the male mold 14 and the lower surface of the female mold 03 and the distance between the lower surface of the male mold 14 and the inner wall of the female mold 03 equal, thereby ensuring that the thickness of each position of the entire computer lower cover will not change after the stamping is completed. Different from the prior art, the structure of the male mold 14 and the arc edge 21 of the present technology is a knot The structure is integrated, so when stamping, there will be no linear grooves or linear protrusions on the computer lower cover formed by stamping due to the existence of gaps, so that the overall appearance after molding is more beautiful. In addition, since the male mold 14 and the female mold 03 are respectively provided with arc edge 1 20 and arc edge 21, the four sides of the computer lower cover after molding will be directly arc-shaped, which is different from the prior art that each mold needs to be stamped separately. It is formed at one time, which is more efficient and has better structural consistency, so it is more beautiful and has no edges and corners. Therefore, when colliding with other objects, the four sides will not be easily deformed due to the existence of edges and corners. In addition, the smooth arc surface is not easy to scratch the hands when in use; in addition, the wedge block 19 can be pushed downward, and when the wedge block 19 moves downward, it will push the ejector rod 18 to move toward the inside of the female mold 03 (can be combined with Figure 4), since the guide rail column 23 is limitedly slidably connected in the guide rail groove 22, and the magnetic ejector piece 04 is connected to the concave mold 03 in the upper and lower limit positions, when the ejector rod 18 moves toward the concave mold 03, the guide rail column 23 will move upward through the guide rail groove 22, so that the guide rail column 23 will drive the magnetic ejector piece 04 to move upward at the same time, thereby pushing the computer lower cover stamped in the concave mold 03 upward, thereby solving the problem that the computer lower cover is stuck in the concave mold 03 after the stamping is completed and is inconvenient to take out, and since there are two magnetic ejector pieces 04, when the ejector rod 18 moves, the two magnetic ejector pieces 04 will move upward at the same time, thereby ensuring that the entire computer lower cover is evenly stressed, so that the computer lower cover is not easily deformed when it is pushed out, thereby protecting the computer lower cover. In addition, since the magnetic ejector piece 04 has magnetic force, it can continuously absorb the computer lower cover during the rising process, thereby ensuring that it will not directly slide when it is pushed out of the concave mold 03. The edge may cause the computer to break, so two magnetic ejection pieces 04 are provided to support the computer lower cover more stably, and during the stamping, the computer lower cover is placed on the magnetic ejection piece 04 and will be attracted by the magnetic ejection piece 04, so that the computer lower cover will not be deviated due to mechanical vibration and other factors, resulting in substandard stamping, thereby ensuring the accuracy of stamping, and during the stamping, when the male mold 14 pushes the computer lower cover to move into the female mold 03, the computer lower cover will push the magnetic ejection piece 04 to move into the female mold 03, and the magnetic ejection piece 04 will push the ejection rod 18 to move out of the female mold 03, and the ejection rod 18 will push the wedge 19 to reset, and this process is gradually carried out with the stamping action, so the magnetic ejection piece 04 will always support the computer lower cover when the computer lower cover moves into the female mold 03, thereby ensuring that the bottom surface is not easily deformed at the surrounding positions when the male mold 14 is stamping, and will only deform from the surrounding areas, thereby ensuring the quality of stamping;

[0029] Different from the prior art, the present technology is provided with a magnetic ejector sheet 04. By pushing the wedge block 19, the wedge block 19 will push the ejector rod 18 to move into the concave mold 03, so that the ejector rod 18 passes through the guide rail groove 22 to make the guide rail column 23 move upward, so that the guide rail column 23 will push the magnetic ejector sheet 04 to move upward, so as to facilitate the unloading of the computer lower cover after the stamping is completed. At the same time, during the stamping process, the magnetic ejector sheet 04 can support the computer lower cover, so that the middle position of the computer lower cover is not easy to deform, and before and after stamping, the magnetic ejector sheet 04 can absorb the computer lower cover, thereby playing a fixing effect and ensuring the accuracy of stamping.

[0030] As a further scheme of the present invention, it includes a frame 01, and a plurality of stamping frames 02 are arranged in a circular array with the axis of the frame 01 as the center. A plurality of picking mechanisms are arranged in a circular array with the axis of the frame 01 as the center, and the picking mechanism includes a turntable 05 rotatably connected to the frame 01, and a rotating rod 06 is fixedly connected to the arc-shaped outer wall of the turntable 05, and a negative pressure cylinder 08 is fixedly connected to the rotating rod 06. An inner cavity groove 28 is provided in the negative pressure cylinder 08, and a secondary suction cylinder 27 is limitedly slidably connected in the inner cavity groove 28. The part of the secondary suction cylinder 27 located outside the negative pressure cylinder 08 is connected with four suction claws 09 in a circular array with the axis of the secondary suction cylinder 27 as the center. A suction cup 10 is arranged on the end of the suction claw 09 away from the secondary suction cylinder 27. A transmission mechanism 1 that can move the secondary suction cylinder 27 downward is also provided on the frame 01, and also includes a motor 11 fixedly connected to the frame 01 and capable of driving the turntable 05 to rotate.

[0031] As a further solution of the present invention, the transmission mechanism 1 includes a guide rail rod 24 fixedly connected to the suction claw 09, and a guide rail block 17 capable of moving the guide rail rod 24 downward is fixedly connected to the lower surface of the frame 01.

[0032] Can be combined Figure 4 and Figure 5 as well as Figure 6 After the stamping is completed, the motor 11 will drive the turntable 05 to rotate through the output shaft to drive the rotating rod 06 to rotate. When the rotating rod 06 rotates, it will drive the negative pressure cylinder 08 to rotate (can be combined with Figure 1), when the negative pressure cylinder 08 is about to move to the top of the concave mold 03, the guide rod 24 begins to contact the guide block 17, so that the guide block 17 will push the guide rod 24 to move downward, so that the guide rod 24 will drive the suction claw 09 to make the auxiliary suction cylinder 27 move downward in the inner cavity groove 28, so that the auxiliary suction cylinder 27 will drive the suction claw 09 to drive the suction cup 10 to move toward the concave mold 03, and the suction cup 10 will rest on the lower cover of the computer, and then the auxiliary suction cylinder 27 will continue to move downward to squeeze the suction cup 10, thereby squeezing out the air inside it, so that it can generate suction, thereby sucking the lower cover of the computer, and then the auxiliary suction cylinder 27 starts to move upward, so as to suck the lower cover of the computer and take it to the top of the concave mold 03, and then turn. The movable rod 06 will continue to rotate with the turntable 05, thereby driving the auxiliary suction cylinder 27 through the negative pressure cylinder 08 to make the suction cup 10 bring the punched computer lower cover out of the position of the stamping frame 02, and then the computer lower cover can be removed from the suction cup 10, which is convenient for subsequent stamping work and completes the entire unloading action; different from the existing technology, it can realize automatic unloading with high efficiency, and the computer lower cover is moved by the suction cup 10. Since the suction cup 10 is relatively soft, it is not easy to damage the computer lower cover, and a plurality of suction cups 10 are provided, which can stably suck the computer lower cover, thereby ensuring that the computer lower cover is not easy to fall when it is moved out of the stamping frame 02, and it is pulled at multiple positions, so that the computer lower cover is not easy to deform.

[0033] As a further solution of the present invention, a negative pressure device is also provided on the negative pressure cylinder 08, and the negative pressure device includes a piston 26 which is limitedly slidably connected in the negative pressure cylinder 08, and also includes a transmission mechanism 2 which can drive the piston 26 to slide in the negative pressure cylinder 08.

[0034] As a further solution of the present invention, the second transmission mechanism includes a limit frame 29 fixedly connected to the lower surface of the rotating rod 06, and a slider 30 is connected to the limit sliding inside the limit frame 29. It also includes a pull rope 25 fixedly connected to the upper surface of the piston 26. After the pull rope 25 extends out of the negative pressure cylinder 08, it passes through the rotating rod 06 and is fixedly connected to the slider 30. The rotating rod 06 is provided with a plurality of pulleys for limiting the trajectory of the pull rope 25, and the frame 01 is also provided with a guide structure that can enable the slider 30 to move toward the direction close to the negative pressure cylinder 08.

[0035] As a further solution of the present invention, the guide structure includes a guide rail 07 fixedly connected to the frame 01, and also includes a spring arranged inside the negative pressure cylinder 08 to enable the piston 26 to perform a reset movement toward the direction close to the auxiliary suction cylinder 27.

[0036] Can be combined Figure 4 and Figure 5 as well as Figure 6When the auxiliary suction cylinder 27 drives the suction claw 09 to move downward so that the suction cup 10 is attached to the lower cover of the computer, at the same time, the rotation of the rotating rod 06 will drive the limit frame 29 to move the slider 30 to the position of the guide bar 07. As the rotating rod 06 rotates, the guide bar 07 will cause the slider 30 to move quickly toward the negative pressure cylinder 08 on the limit frame 29, so that the slider 30 will pull the pull rope 25, and the pull rope 25 will pull the piston 26 to slide upward, so that negative pressure is quickly generated in the negative pressure cylinder 08. Thereby, negative pressure is generated in the suction cup 10, thereby ensuring that the suction cup 10 can stably suck the lower cover of the computer. After the piston 26 moves to the upper end of the negative pressure cylinder 08, the guide rod 24 will abut against the guide block 17 and continue to move upward, and will not move upward directly and quickly, so it is not easy to generate vibration. Therefore, the guide rod 24 will reset upward under the action of the spring in the inner cavity groove 28, so that the auxiliary suction cylinder 27 will drive the suction claw 09 to drive the suction cup 10 to move upward, thereby driving the lower cover of the computer to separate from the concave mold. 03, then the rotating rod 06 continues to rotate, the slider 30 will move to the position of the second section of the guide bar 07 turning, and continue to stick to the guide bar 07, so the shape of the second section of the guide bar 07 is an arc, so as to ensure that only when the rotation of the rotating rod 06 drives the suction cup 10 to separate from the position of the stamping frame 02, the slider 30 will separate from the position of the guide bar 07, so that the piston 26 will quickly reset under the action of the spring in the negative pressure cylinder 08, so that there is no negative pressure in the negative pressure cylinder 08, so that the suction cup 10 loses suction, so that the computer lower cover will separate from the suction cup 10, and a material collection device can be set at the position where the computer lower cover is separated, which is convenient for collecting and storing materials; different from manual picking, the function of picking up can be automatically realized after the stamping is completed, and through the negative pressure method, it will not directly contact the computer lower cover rigidly, so that it is not easy to deform the computer lower cover, thereby protecting the computer lower cover well, and through the negative pressure suction method, it is also convenient to take the computer lower cover out from the inside of the concave female mold 03;

[0037] As a further solution of the present invention, a punching device is also provided on the turntable 05, and the punching device includes a punching rod 13 fixedly connected to the turntable 05, and also includes a punching rail seat 12 fixedly connected to the slide 15. A slide groove is provided on the slide 15 and a sleeve rod 31 is fixedly connected in the slide groove. The outer wall of the sleeve rod 31 is sleeved with a spring that can reset the slide 15 upward.

[0038] As a further solution of the present invention, a push rod 16 capable of moving the wedge block 19 downward is fixedly connected to the lower surface of the rotating rod 06 .

[0039] When the suction cup 10 moves a computer lower cover out from under the negative pressure cylinder 08, after the new computer lower cover to be punched is placed on the female mold 03, the rotating rod 06 will drive the punching rod 13 to rotate to the position of the punching rail seat 12, and then with the rotation of the turntable 05, the punching rod 13 will move along the track of the punching rail seat 12, so that the punching rail seat 12 moves downward, and the punching rail seat 12 will drive the slide 15 to move downward at the same time, so that the slide 15 can drive the male mold 14 The downward movement realizes the stamping function. After the stamping rod 13 moves out of the stamping rail seat 12, the slide 15 will reset upward under the action of the spring on the sleeve rod 31. Then the rotation of the rotating rod 06 will first cause the push rod 16 to rotate to the position of the wedge block 19, so that the rotating rod 06 will drive the push rod 16 to move and push the wedge block 19 to push the computer lower cover out of the concave mold 03. Then, the suction cup 10 moves downward to suck the computer lower cover and then take the computer lower cover out of the concave mold 03.

Claims

1. The mold for the arc surface extrusion molding structure of the computer lower cover is characterized by: The forming structure comprises a punching frame (02), a concave mold (03) is installed on the punching frame (02), a structurally integrated forming cavity is arranged inside the concave mold (03), arc edges (21) are arranged around the forming cavity, a slide (15) is provided on the punching frame (02) and is slidably connected to the position above the concave mold (03), a convex mold (14) is fixedly connected to the lower end of the slide (15), and a part of the convex mold (14) close to the concave mold (03) is provided with a convex mold (14) having an integral structure. The side surface is provided with an arc edge (20) around it, the inner upper and lower limit sliding connections of the female mold (03) are connected with a magnetic ejection plate (04), the female mold (03) is horizontally connected with an ejection rod (18) penetrated by the magnetic ejection plate (04), the magnetic ejection plate (04) is fixedly connected with a guide rail column (23), the ejection rod (18) is provided with a guide rail groove (22) for the limit sliding guide rail column (23), and the female mold (03) is connected with a wedge block (19) in an upper limit sliding connection; The mold comprises a frame (01), the punching frame (02) is provided with a plurality of groups in a circular array with the axis of the frame (01) as the center, the frame (01) is provided with a plurality of groups of picking mechanisms in a circular array with the axis of the frame (01) as the center, the picking mechanisms comprising a turntable (05) rotatably connected to the frame (01), a rotating rod (06) being fixedly connected to the arc-shaped outer wall of the turntable (05), a negative pressure cylinder (08) being fixedly connected to the rotating rod (06), and an inner portion of the negative pressure cylinder (08) being provided inside. The inner cavity (28) is connected to a secondary suction cylinder (27) in a limited sliding manner. The portion of the secondary suction cylinder (27) located outside the negative pressure cylinder (08) is connected to four suction claws (09) in a circular array with the axis of the secondary suction cylinder (27) as the center. A suction cup (10) is provided at one end of the suction claw (09) away from the secondary suction cylinder (27). The frame (01) is also provided with a transmission mechanism that can move the secondary suction cylinder (27) downward, and also includes a motor (11) fixedly connected to the frame (01) and capable of driving the turntable (05) to rotate.

2. The die for the arc-surface extrusion molding structure of the computer lower cover according to claim 1, characterized in that: The transmission mechanism 1 comprises a guide rail rod (24) fixedly connected to the suction claw (09), and the lower surface of the frame (01) is fixedly connected to a guide rail block (17) capable of moving the guide rail rod (24) downward.

3. The die for the arc-surface extrusion molding structure of the computer lower cover according to claim 1, characterized in that: The negative pressure cylinder (08) is also provided with a negative pressure device, which includes a piston (26) that is limitedly slidably connected in the negative pressure cylinder (08), and also includes a transmission mechanism 2 that can drive the piston (26) to slide in the negative pressure cylinder (08).

4. The die for the arc-surface extrusion molding structure of the computer lower cover according to claim 3, characterized in that: The second transmission mechanism includes a limit frame (29) fixedly connected to the lower surface of the rotating rod (06), and a slider (30) is slidably connected to the limit frame (29). It also includes a pull rope (25) fixedly connected to the upper surface of the piston (26). After the pull rope (25) extends out of the negative pressure cylinder (08), it passes through the rotating rod (06) and is fixedly connected to the slider (30). The rotating rod (06) is provided with a plurality of pulleys for limiting the trajectory of the pull rope (25). The frame (01) is also provided with a guide structure that can enable the slider (30) to move toward the direction close to the negative pressure cylinder (08).

5. The die for the arc-surface extrusion molding structure of the computer lower cover according to claim 4, characterized in that: The guide structure comprises a guide rail (07) fixedly connected to the frame (01), and also comprises a spring arranged inside the negative pressure cylinder (08) and capable of causing the piston (26) to perform a reset movement toward a direction close to the auxiliary suction cylinder (27).

6. The die for the arc-surface extrusion molding structure of the computer lower cover according to claim 1, characterized in that: The turntable (05) is also provided with a punching device, which includes a punching rod (13) fixedly connected to the turntable (05), and a punching rail seat (12) fixedly connected to the slide (15). The slide (15) is provided with a slide groove and a sleeve rod (31) is fixedly connected in the slide groove. The outer wall of the sleeve rod (31) is sleeved with a spring that can reset the slide (15) upward.

7. The die for the arc-surface extrusion molding structure of the computer lower cover according to claim 1, characterized in that: The lower surface of the rotating rod (06) is fixedly connected with a push rod (16) capable of moving the wedge block (19) downward.

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