Rotating device for stamping die

Abstract

The invention relates to the technical field of dies, in particular to a rotating device for a stamping die, which comprises a positioning frame, a U-shaped seat is mounted on one side of the positioning frame, two symmetrically arranged support arms are inserted into one side of the positioning frame, and a frame is mounted on the two support arms. A supporting frame used for supporting a stamping lower die is rotationally installed in the frame through supporting shafts, a first bevel gear fixedly connected with one supporting shaft is arranged on the outer side of the supporting frame, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is connected with a small chain wheel through a connecting shaft. The small chain wheel is connected with a large chain wheel driven by a motor through a chain, and hydraulic cylinders used for driving the supporting arms to move upwards or downwards are installed on the two parallel side faces of the positioning frame correspondingly. And the lower die or the upper die is damaged by the retained product.

Description

Technical Field

[0001] The invention relates to a rotating device for a stamping die, belonging to the field of dies. Background Art

[0002] Stamping dies are important tools for sheet metal forming and are widely used in home appliance production, electronic equipment and other fields. It applies external force to make the metal material plastically deform in the die, so as to obtain parts of the required shape and size. The die structure includes an upper die: installed on the slide of the press, responsible for moving downward and cooperating with the lower die to complete the stamping process; a lower die: fixed on the workbench, working together with the upper die to achieve material forming; a guide device: to ensure that the upper and lower dies are accurately aligned, usually composed of a guide pin and a guide sleeve; an ejection mechanism: to help demolding and prevent the formed product from adhering to the die. This type of stamping die adopts an ejection mechanism. After the formed product is ejected from the lower die, the formed product will remain on the surface of the lower die. When the upper die falls, the product remaining on the surface of the lower die will cause damage to the lower die or the upper die under the extrusion of the lower die and the upper die. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a rotating device for a stamping die to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a rotating device for a stamping die, including a positioning frame, a U-shaped seat is installed on one side of the positioning frame, and two symmetrically arranged support arms are inserted on one side of the positioning frame, and the two support arms are installed with a frame, and a support frame for supporting the stamping lower die is rotatably installed in the frame through a support shaft, and a first bevel gear connected and fixed to a support shaft is provided on the outside of the support frame, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is connected to a small sprocket through a connecting shaft, and the connecting shaft is rotatably connected to the support frame, and the small sprocket is connected to a large sprocket driven by a motor through a chain, and the large sprocket is rotatably installed between the frame and a support arm, and hydraulic cylinders for driving the support arm to move upward or downward are installed on two parallel side surfaces of the positioning frame.

[0005] Specifically, the side of the positioning frame facing away from the U-shaped seat is provided with two movable arms that fit with the positioning frame, one end of the support arm is connected and fixed to the movable arm, and a plug-in block is installed at the upper position of the side of the movable arm facing the positioning frame. The side of the positioning frame facing away from the U-shaped seat is provided with two vertically arranged plug-in grooves that match the plug-in blocks, and the plug-in blocks are inserted in the plug-in grooves. A part of the upper end of the movable arm extends to the side of the positioning frame, and the movable end of the hydraulic cylinder is connected and fixed to the part of the movable arm on the side of the positioning frame.

[0006] Specifically, tension rib plates which are arranged obliquely and symmetrically with respect to the support arm are provided on both the upper side and the lower side of the support arm, and both ends of the tension rib plates are respectively fixedly connected to the support arm and the movable arm.

[0007] Specifically, the cross-section of the plug-in block is "T"-shaped, and the cross-section of the plug-in slot is "T"-shaped.

[0008] Specifically, a connecting plate is fixedly connected to the part of the upper end of the movable arm outside the positioning frame. One end of the connecting plate away from the movable arm is fixedly connected to a sliding plate arranged perpendicular to the connecting plate. First rectangular slots are formed on two parallel side surfaces of the U-shaped seat. A detachable guard plate is installed in the first rectangular slots. One end of the sliding plate away from the connecting plate is inserted into the first rectangular slot, and a cushion block which is in sliding contact with the guard plate is inserted at one end of the sliding plate in the first rectangular slot.

[0009] Specifically, second rectangular slots are formed on both two parallel side surfaces of the U-shaped seat. The second rectangular slots are arranged on one side of the first rectangular slots close to the positioning frame. A plurality of vertically arranged transverse holes are formed between the first rectangular slots and the second rectangular slots. A screw rod is inserted in the transverse holes. One end of the screw rod is threadedly connected to the guard plate, and two nuts are threadedly connected to the screw rod on both sides of the transverse hole.

[0010] Specifically, a threaded sleeve is threadedly connected to one end of the screw rod close to the guard plate, and the threaded sleeve is fixedly connected to the guard plate.

[0011] Specifically, a rectangular jack is formed in the area of the sliding plate covered by the cushion block. A rectangular insertion rod is fixedly connected to the surface of the cushion block facing the jack, and the insertion rod is inserted into the jack.

[0012] Specifically, two L-shaped seats are sleeved on the connecting shaft. The L-shaped seats are fixedly connected to the frame, and the connecting shaft is rotatably connected to the L-shaped seats through bearings.

[0013] Specifically, a plurality of fixing holes for inserting bolts are formed on the surface of the U-shaped seat facing the positioning frame, and the plurality of fixing holes are uniformly arranged on the surface of the U-shaped seat facing the positioning frame.

[0014] Advantages of the present invention:

[0015] 1. When the motor drives the large sprocket to rotate, the large sprocket drives the small sprocket to rotate through the chain. After the transmission of the first bevel gear and the second bevel gear, the support frame supporting the lower die rotates around the support shaft, so that the lower die in the support frame is turned over, preventing the formed product from staying on the lower die, and preventing the staying product from damaging the lower die or the upper die during the mold closing process of the lower die and the upper die.

[0016] 2. Before the lower die in the support frame flips, control the hydraulic cylinder to contract, so that the structure formed by the movable arm and the support arm moves downward. At this time, the insertion block moves downward along the insertion slot, causing the support frame to move downward, thereby increasing the distance between the support frame and the upper die, providing sufficient space for the flipping of the support frame, avoiding position interference between the support frame and the upper die, facilitating the smooth flipping of the support frame, controlling the hydraulic cylinder to extend, and facilitating the movement of the support frame flipped to the horizontal state back to its original position.

[0017] 3. Make the cushion block installed on the slide plate slide in contact with the guard plate. At this time, the force acting on the movable arm by components such as the lower die will act on the U-shaped seat through components such as the connecting plate, slide plate, cushion block, and guard plate, preventing the insertion part of the insertion block and the positioning frame from completely bearing the reaction force generated by components such as the lower die, facilitating the smooth sliding of the movable arm, and improving the stability of the structure.

[0018] 4. Make the cushion block slide in contact with the guard plate, thereby preventing the slide plate and the inner wall of the first rectangular groove from being damaged due to sliding friction, and extending the service life of the guard plate and the U-shaped seat.

[0019] 5. When the cushion block and the guard plate become thinner due to wear, adjust the position of the screw along the transverse hole to make the guard plate and the cushion block come into contact again, and then use the two nuts on the screw to limit the relative position of the screw and the U-shaped seat, facilitating the full utilization of the cushion block and the guard plate. At the same time, after loosening the nuts, make most of the screw be in the second rectangular groove, so that a gap is generated between the cushion block and the guard plate, providing space for replacing the cushion block and the guard plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objectives, and advantages of the present invention will become more obvious:

[0021] Figure 1 It is a schematic structural diagram of a rotary device for a stamping die of the present invention;

[0022] Figure 2 It is another perspective three-dimensional view of a rotary device for a stamping die of the present invention;

[0023] Figure 3 It is an assembly schematic diagram of a screw, a guard plate, a U-shaped seat, and a positioning frame in a rotary device for a stamping die of the present invention;

[0024] Figure 4 It is an assembly schematic diagram of a U-shaped seat and a positioning frame in a rotary device for a stamping die of the present invention;

[0025] Figure 5 It is an assembly schematic diagram of a cushion block, a slide plate, a connecting plate, a movable arm, and a support arm in a rotary device for a stamping die of the present invention;

[0026] In the figure: 1, positioning frame, 2, U-shaped seat, 3, fixing hole, 4, slide plate, 5, connecting plate, 6, first rectangular groove, 7, guard plate, 8, nut, 9, second rectangular groove, 10, hydraulic cylinder, 11, movable arm, 12, tensioning plate, 13, support arm, 14, frame, 15, support frame, 16, first bevel gear, 17, second bevel gear, 18, L-shaped seat, 19, connecting shaft, 20, small sprocket, 21, chain, 22, large sprocket, 23, plug-in block, 24, plug-in groove, 25, threaded sleeve, 26, screw, 27, transverse hole, 28, plug rod, 29, cushion block. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] See also Figures 1 - 4 The present invention provides a technical solution: a rotating device for a stamping die, comprising a positioning frame 1, a U-shaped seat 2 is installed on one side of the positioning frame 1, and a plurality of evenly arranged fixing holes 3 are opened on the side of the U-shaped seat 2 facing the positioning frame 1, wherein the plurality of fixing holes 3 are on the side of the U-shaped seat 2 facing the positioning frame 1, so that bolts are passed through the fixing holes 3 and installed at the desired position, thereby completing the restriction of the position of the U-shaped seat 2, that is, the position of the positioning frame 1 is restricted.

[0029] See also Figure 1 , Figure 2 and Figure 5 Two symmetrically arranged support arms 13 are inserted on one side of the positioning frame 1, wherein the side of the positioning frame 1 away from the U-shaped seat 2 is provided with two movable arms 11 that fit with the positioning frame 1, one end of the support arm 13 is connected and fixed to the movable arm 11, and the upper side and the lower side of the support arm 13 are provided with inclined and symmetrically arranged tie bars 12 about the support arm 13, so that the two ends of the tie bars 12 are respectively connected and fixed to the support arm 13 and the movable arm 11, thereby improving the mechanical strength of the connection between the movable arm 11 and the support arm 13.

[0030] See also Figures 1 - 5 A plug-in block 23 with a T-shaped cross section is installed at the upper position of the side of the movable arm 11 facing the positioning frame 1, and two vertically arranged plug-in grooves 24 with a T-shaped cross section that match the plug-in block 23 are provided on the side of the positioning frame 1 away from the U-shaped seat 2, so that the plug-in block 23 is inserted into the plug-in groove 24, which is convenient for limiting the moving trajectory of the movable arm 11.

[0031] See also Figures 1 - 5, two support arms 13 are installed with a frame 14. Inside the frame 14, a support frame 15 for supporting the stamping lower die is rotatably installed through a support shaft. On the outside of the support frame 15, a first bevel gear 16 connected and fixed to one support shaft is provided. The first bevel gear 16 meshes with a second bevel gear 17. The second bevel gear 17 is connected with a small sprocket 20 through a connecting shaft 19. Two L-shaped seats 18 are sleeved on the connecting shaft 19. The L-shaped seats 18 are connected and fixed to the frame 14. The connecting shaft 19 is rotatably connected to the L-shaped seats 18 through bearings, so as to realize the rotational connection between the connecting shaft 19 and the support frame 15. The small sprocket 20 is connected with a large sprocket 22 driven by a motor through a chain 21. The large sprocket 22 is rotatably installed between the frame 14 and one support arm 13. Hydraulic cylinders 10 for driving the support arms 13 to move up or down are installed on both parallel side surfaces of the positioning frame 1. That is, a part of the upper end of the movable arm 11 extends to the side surface of the positioning frame 1. The movable end of the hydraulic cylinder 10 is connected and fixed to the part of the movable arm 11 located on the side surface of the positioning frame 1. When the motor drives the large sprocket 22 to rotate, the large sprocket 22 drives the small sprocket 20 to rotate through the chain 21. Then, after the transmission of the first bevel gear 16 and the second bevel gear 17, the support frame 15 supporting the lower die rotates around the support shaft, so that the lower die in the support frame 15 is turned over, preventing the formed product from staying on the lower die, and preventing the staying product from damaging the lower die or the upper die during the die closing process of the lower die and the upper die. Before the lower die in the support frame 15 is turned over, control the hydraulic cylinder 10 to contract, so that the structure formed by the movable arm 11 and the support arm 13 moves downward. At this time, the insertion block 23 moves downward along the insertion slot 24, so that the support frame 15 moves downward, thereby increasing the distance between the support frame 15 and the upper die, providing sufficient space for the turning of the support frame 15, avoiding position interference between the support frame 15 and the upper die, facilitating the smooth turning of the support frame 15, controlling the hydraulic cylinder 10 to extend, and facilitating the movement of the support frame 15 turned to the horizontal state to the original position.

[0032] Refer to Figures 1 - 5, a connecting plate 5 is fixedly connected to the part of the upper end of the movable arm 11 outside the positioning frame 1. One end of the connecting plate 5 far from the movable arm 11 is fixedly connected to a sliding plate 4 arranged perpendicular to the connecting plate 5. First rectangular grooves 6 are opened on two parallel side surfaces of the U-shaped seat 2. A detachable protective plate 7 is installed in the first rectangular groove 6. One end of the sliding plate 4 far from the connecting plate 5 is inserted into the first rectangular groove 6. A cushion block 29 in sliding contact with the protective plate 7 is inserted at one end of the sliding plate 4 in the first rectangular groove 6. A rectangular jack is opened in the area of the sliding plate 4 covered by the cushion block 29. A rectangular inserting rod 28 is fixedly connected to one side of the cushion block 29 facing the jack, so that the inserting rod 28 is inserted into the jack to complete the insertion connection between the sliding plate 4 and the cushion block 29, and the cushion block 29 installed on the sliding plate 4 is in sliding contact with the protective plate 7. At this time, the force acting on the movable arm 11 by components such as the lower die will act on the U-shaped seat 2 through components such as the connecting plate 5, the sliding plate 4, the cushion block 29 and the protective plate 7, preventing the insertion part of the insertion block 23 and the positioning frame 1 from completely bearing the reaction force generated by components such as the lower die, being beneficial to the smooth sliding of the movable arm 11, improving the stability of the structure, making the cushion block 29 in sliding contact with the protective plate 7, thereby preventing the sliding plate 4 and the inner wall of the first rectangular groove 6 from being damaged due to sliding friction, and prolonging the service life of the protective plate 7 and the U-shaped seat 2.

[0033] Refer to Figures 1 - 5 , second rectangular grooves 9 are opened on two parallel side surfaces of the U-shaped seat 2. The second rectangular grooves 9 are arranged on the side of the first rectangular groove 6 close to the positioning frame 1. A plurality of vertically arranged transverse holes 27 are opened between the first rectangular groove 6 and the second rectangular groove 9. A screw rod 26 is inserted into the transverse hole 27. A threaded sleeve 25 is threadedly connected to one end of the screw rod 26 close to the protective plate 7. The threaded sleeve 25 is fixedly connected to the protective plate 7. Two nuts 8 are threadedly connected to the screw rod 26 on both sides of the transverse hole 27. When the cushion block 29 and the protective plate 7 become thinner due to wear, the position of the screw rod 26 is adjusted along the transverse hole 27 to make the protective plate 7 and the cushion block 29 contact again, and then the relative position of the screw rod 26 and the U-shaped seat 2 is restricted by the two nuts 8 on the screw rod 26, which is convenient for the full utilization of the cushion block 29 and the protective plate 7. At the same time, after loosening the nuts 8, a large part of the screw rod 26 is in the second rectangular groove 9, so that a gap is generated between the cushion block 29 and the protective plate 7, providing space for replacing the cushion block 29 and the protective plate 7.

[0034] Although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotating device for a stamping die, comprising a positioning frame (1), characterized in that: A U-shaped seat (2) is installed on one side of the positioning frame (1), and two symmetrically arranged support arms (13) are inserted on one side of the positioning frame (1), and a frame (14) is installed on the two support arms (13). A support frame (15) for supporting a stamping lower die is rotatably installed in the frame (14) via a support shaft, and a first bevel gear (16) connected and fixed to a support shaft is provided on the outer side of the support frame (15), and the first bevel gear (16) is meshed with a second bevel gear (17), and the The second bevel gear (17) is connected to a small sprocket (20) via a connecting shaft (19), the connecting shaft (19) is rotatably connected to a support frame (15), the small sprocket (20) is connected to a large sprocket (22) driven by a motor via a chain (21), the large sprocket (22) is rotatably mounted between a frame (14) and a support arm (13), and hydraulic cylinders (10) for driving the support arm (13) to move upward or downward are mounted on two parallel side surfaces of the positioning frame (1).

2. A rotating device for a stamping die according to claim 1, characterized in that: The side of the positioning frame (1) facing away from the U-shaped seat (2) is provided with two movable arms (11) that fit with the positioning frame (1); one end of the support arm (13) is connected and fixed to the movable arm (11); a plug-in block (23) is installed at the upper position of the side of the movable arm (11) facing the positioning frame (1); the side of the positioning frame (1) facing away from the U-shaped seat (2) is provided with two vertically arranged plug-in grooves (24) that match with the plug-in blocks (23); the plug-in blocks (23) are inserted into the plug-in grooves (24); a part of the upper end of the movable arm (11) extends to the side of the positioning frame (1); and the movable end of the hydraulic cylinder (10) is connected and fixed to the part of the movable arm (11) on the side of the positioning frame (1).

3. A rotating device for a stamping die according to claim 2, characterized in that: The upper side of the support arm (13) and the lower side of the support arm (13) are both provided with a tie plate (12) which is arranged obliquely and symmetrically with respect to the support arm (13), and the two ends of the tie plate (12) are respectively connected and fixed to the support arm (13) and the movable arm (11).

4. A rotating device for a stamping die according to claim 2, characterized in that: The plug-in block (23) has a cross section in the shape of a letter "T", and the plug-in slot (24) has a cross section in the shape of a letter "T".

5. A rotating device for a stamping die according to claim 2, characterized in that: A connecting plate (5) is connected and fixed to the part of the upper end of the movable arm (11) outside the positioning frame (1); a sliding plate (4) arranged perpendicular to the connecting plate (5) is connected and fixed to the end of the connecting plate (5) away from the movable arm (11); a first rectangular groove (6) is provided on two parallel side surfaces of the U-shaped seat (2); a detachable guard plate (7) is installed in the first rectangular groove (6); an end of the sliding plate (4) away from the connecting plate (5) is inserted in the first rectangular groove (6); and a pad (29) is inserted into the end of the sliding plate (4) in the first rectangular groove (6) and in sliding contact with the guard plate (7).

6. A rotating device for a stamping die according to claim 5, characterized in that: The U-shaped seat (2) has two parallel side surfaces each provided with a second rectangular groove (9), the second rectangular groove (9) being arranged on a side of the first rectangular groove (6) close to the positioning frame (1), a plurality of vertically arranged transverse holes (27) being provided between the first rectangular groove (6) and the second rectangular groove (9), a screw rod (26) being inserted into the transverse hole (27), one end of the screw rod (26) being threadedly connected to the guard plate (7), and two nuts (8) being threadedly connected to the screw rod (26) and being located on both sides of the transverse hole (27).

7. A rotating device for a stamping die according to claim 6, characterized in that: One end of the screw rod (26) close to the guard plate (7) is threadedly connected to a threaded sleeve (25), and the threaded sleeve (25) is connected and fixed to the guard plate (7).

8. The punching die rotating device according to claim 5, characterized in that: A rectangular insertion hole is provided in the area of ​​the slide plate (4) covered by the cushion block (29); a rectangular insertion rod (28) is connected and fixed to a side of the cushion block (29) facing the insertion hole; the insertion rod (28) is inserted into the insertion hole.

9. A rotating device for a stamping die according to claim 1, characterized in that: Two L-shaped seats (18) are sleeved on the connecting shaft (19), the L-shaped seats (18) are connected and fixed to the frame (14), and the connecting shaft (19) is rotatably connected to the L-shaped seats (18) via bearings.

10. The rotating device for a stamping die according to claim 1, characterized in that: A plurality of fixing holes (3) for inserting bolts are provided on one side of the U-shaped seat (2) facing the positioning frame (1), and the plurality of fixing holes (3) are evenly arranged on the one side of the U-shaped seat (2) facing the positioning frame (1).

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