A reverse CAM mechanism

Abstract

The present invention relates to a reverse CAM mechanism, which comprises a lower die, wherein a reverse component is arranged in the lower die, wherein the reverse component comprises a mounting frame, a lower pressing seat, a moving seat, an upper pressing seat and an upward flipping insert, wherein the moving seat is slidably fitted in the mounting frame, wherein two relatively arranged pressure surfaces are arranged on the moving seat, wherein the pressure surfaces are inclinedly arranged, wherein the distance between the two pressure surfaces gradually decreases from the lowest point to the highest point of the moving seat, wherein the lower pressing seat and the upper pressing seat are both vertically slidably fitted in the mounting frame, wherein the lower pressing seat abuts against one of the pressure surfaces, wherein the upper pressing seat abuts against the other of the pressure surfaces, wherein the upward flipping insert is detachably connected to the upper pressing seat, wherein a first resetting member for resetting the lower pressing seat, a second resetting member for resetting the moving seat and a third resetting member for resetting the upper pressing seat are arranged on the mounting frame. The present invention has the effect of reducing the manufacturing cost of sheet metal processing molds.

Description

Technical Field

[0001] The invention relates to the technical field of mold processing, in particular to a reverse CAM mechanism. Background Art

[0002] Computer-aided manufacturing refers to the use of electronic digital computers in the machinery manufacturing industry through various numerically controlled machine tools and equipment to automatically complete the manufacturing processes such as processing, assembly, testing and packaging of discrete products.

[0003] Reference Figure 1 The sheet metal parts in the prior art are a kind of automobile parts. Due to the special shape limitation of automobile sheet metal parts, and for the sake of the automated efficiency of mold processing, sheet metal parts are mostly processed and manufactured by computer-controlled molds. The sheet metal parts in the prior art need to be processed with two corners according to the automobile installation requirements.

[0004] The conventional processing method is to install an upward output mechanism on the lower die to stamp the corner of the sheet metal part. However, such a design requires an additional upward output drive device on the lower die, which increases the production cost of the sheet metal processing mold. Summary of the invention

[0005] In order to reduce the manufacturing cost of sheet metal processing molds, the present application provides a reverse CAM mechanism.

[0006] The present application provides a reverse CAM mechanism adopting the following technical solution:

[0007] A reverse CAM mechanism comprises a lower die, in which a reverse component is arranged, the reverse component comprises a mounting frame, a lower pressure seat, a movable seat, an upper pressure seat and an upward flip insert, the movable seat is slidably fitted in the mounting frame, and the movable seat is provided with two oppositely arranged pressure surfaces, the pressure surfaces are inclinedly arranged, and the distance between the two pressure surfaces gradually decreases from the lowest point to the highest point of the movable seat, the lower pressure seat and the upper pressure seat are both vertically slidably fitted in the mounting frame, the lower pressure seat abuts against one of the pressure surfaces, and the upper pressure seat abuts against the other pressure surface, the upward flip insert is detachably connected to the upper pressure seat, and the mounting frame is provided with a first reset member for resetting the lower pressure seat, a second reset member for resetting the movable seat and a third reset member for resetting the upper pressure seat.

[0008] By adopting the above technical solution, when processing the corner turning of sheet metal parts, force is applied to the lower press seat to make the lower press seat descend, and the moving seat moves to make the upper press seat rise, driving the upward turning insert to rise, and the upward turning insert punches the corner turning of the sheet metal part to make the corner turning deform, thereby achieving the effect of processing the corner turning of the sheet metal part. According to the moving direction of the lower press seat, the staff can use the driving device of the upper mold to drive the upper mold to press the sheet metal part downward while applying pressure to the lower press seat, thereby achieving the effect of the upward turning insert punching the sheet metal part to turn the corner. With such a setting, there is no need to add an upward output driving device, making the design of the lower mold simpler and more compact, and reducing the production cost of the sheet metal processing mold.

[0009] Optionally, the first reset member, the second reset member and the third reset member are all retracting nitrogen cylinders, the output shaft of the first reset member is connected to the lower pressure seat, the output shaft of the second reset member is connected to the moving seat, and the output shaft of the third reset member is connected to the upward flip insert.

[0010] By adopting the above technical solution, the retracting nitrogen cylinder acts as a spring, which has a large initial spring pressure, the spring pressure remains basically constant, and the sealing performance is good, which can effectively reset the lower pressure seat, the moving seat and the upper pressure seat.

[0011] Optionally, a fixed block is connected to the installation frame, and a limiting slide is connected to the side wall of the fixed block close to the upper pressure seat. The limiting slide has a V-shaped groove, and the V-shaped groove is vertically arranged. A guide slide is connected to the upper pressure seat, and the guide slide slide is slidably fitted in the V-shaped groove.

[0012] By adopting the above technical solution, the staff uses the cooperation of the limiting slide and the guide slider to limit the moving direction of the upper press seat, reduce the possibility of the upper press seat being offset during movement, and improve the movement accuracy of the upper press seat.

[0013] Optionally, a limiting block is installed on the fixed block, and the limiting block is used to limit the rising stroke of the upper pressure seat.

[0014] By adopting the above technical solution, the staff uses the limiting block to limit the rising stroke of the upper press seat, reducing the possibility of overtravel due to inertia when the upper press seat rises.

[0015] Optionally, at least two positioning posts are connected to the upwardly turned inlay block, and positioning holes are formed on the upper pressure seat at positions corresponding to the positioning posts, and the positioning posts are plugged into the positioning holes.

[0016] By adopting the above technical solution, the staff uses the cooperation of the positioning column and the positioning hole to limit the installation position of the upward-turned insert, thereby improving the installation accuracy of the upward-turned insert.

[0017] Optionally, a plurality of locking bolts are provided on the upper flip insert, and the locking bolts pass through the upper flip insert and the upper pressure seat and cooperate with the threads of the upper pressure seat.

[0018] By adopting the above technical solution, the staff uses the cooperation between the locking bolt and the upper pressure seat to press the upward-turned insert, the operation steps are simple and fast, and the installation efficiency of the upward-turned insert is improved.

[0019] Optionally, a dovetail strip is connected to the bottom of the upward-flipped insert, a dovetail groove is formed on the upper pressure seat at a position corresponding to the dovetail strip, the dovetail strip is slidably fitted in the dovetail groove, a clamping claw is connected to the upward-flipped insert, the clamping claw is made of a deformable material, a clamping groove is formed on the upper pressure seat, and the clamping claw is clamped and fitted in the clamping groove.

[0020] By adopting the above technical scheme, the staff used the cooperation between the dovetail bar and the dovetail groove to limit the installation direction of the upturned insert, and used the cooperation between the clamping claw and the clamping groove to determine the installation position of the upturned insert and limit the upturned insert, thereby realizing the positioning and installation of the upturned insert.

[0021] Optionally, the upper flip insert is provided with a stabilizing component, which includes a stabilizing head, a tightening column, a moving ball, a tightening spring and a locking column, wherein the stabilizing head passes through the upper flip insert and the upper pressure seat, and is plugged into and cooperates with the upper flip insert and the upper pressure seat, and a tightening hole, a moving groove and a moving hole are opened in the stabilizing head, the moving ball slides in the moving groove, the locking column slides in the moving hole, the locking column is connected to the moving ball, the tightening spring is sleeved on the locking column and is located in the moving groove, and the upper pressure seat is provided with a locking hole at the position of the locking column corresponding to the locking column, the stabilizing head has a tightening hole, the tightening hole is vertically arranged and connected with the moving groove, the tightening column is threadedly engaged in the tightening hole, and a conical head is provided at the bottom of the tightening column. When the upper flip insert is stabilized, the conical head contacts the moving ball, the locking column is partially located in the locking hole, and the tightening spring is compressed.

[0022] By adopting the above technical solution, when further stabilizing the flip-up insert, the staff inserts the stabilizing head into the upper pressure seat, and then uses a tool to rotate the clamping column to lower the clamping column, and the conical head contacts the moving ball to move the moving ball, driving the locking column to move, so that the locking column is partially located in the locking hole, and the clamping spring is compressed, thereby achieving the effect of stabilizing the flip-up insert.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When processing the corner turning of sheet metal parts, apply force to the lower press seat to make it descend, and move the moving seat to make the upper press seat rise, driving the upward turning insert to rise, and the upward turning insert punches the sheet metal part to turn the corner, causing the corner to deform, thus achieving the effect of processing the corner turning of sheet metal parts. According to the moving direction of the lower press seat, the staff can use the driving device of the upper mold to drive the upper mold to press the sheet metal part downward while applying pressure to the lower press seat, thus achieving the effect of the upward turning insert punching the sheet metal part to turn the corner. With this setting, there is no need to add an upward output driving device, making the design of the lower mold simpler and more compact, and reducing the production cost of the sheet metal processing mold;

[0025] 2. The staff used the cooperation between the dovetail strip and the dovetail groove to limit the installation direction of the upturned insert, and used the cooperation between the clamping claw and the clamping groove to determine the installation position of the upturned insert and limit the upturned insert, thus realizing the positioning and installation of the upturned insert;

[0026] 3. To further stabilize the flipped insert, the staff inserts the stabilizing head into the upper pressure seat, and then uses a tool to rotate the clamping column to lower the clamping column. The conical head contacts the moving ball, causing the moving ball to move, driving the locking column to move, so that the locking column is partially located in the locking hole, and the clamping spring is compressed, thereby achieving the effect of stabilizing the flipped insert. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a sheet metal part in the prior art.

[0028] Figure 2 It is a schematic diagram of the structure of the lower mold in the embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the structure of the reverse component in the embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the structure inside the installation frame in the embodiment of the present application.

[0031] Figure 5 It is an exploded view used to reflect the structure of the limiting slide and the guide slider in the embodiment of the present application.

[0032] Figure 6 It is an exploded view used to illustrate the structure of the positioning column and the locking bolt in the embodiment of the present application.

[0033] Figure 7 It is an exploded view used to illustrate the dovetail strip and the clamping claw structure in the embodiment of the present application.

[0034] Figure 8 It is a cross-sectional view used to illustrate the structure of a stable component in an embodiment of the present application.

[0035] Fig. 9 yes Figure 8 Enlarged view of point A.

[0036] Description of reference numerals: 01, sheet metal part; 02, lower die; 1, reverse assembly; 11, mounting frame; 111, upper frame; 112, lower frame; 12, lower pressure seat; 121, first pressure surface; 122, first reset member; 13, moving seat; 131, pressure surface; 132, second reset member; 14, upper pressure seat; 141, second pressure surface; 142, guide slider; 143, third reset member; 144, snap-in groove; 145, locking hole ; 15. Upturned insert; 151. Positioning column; 152. Locking bolt; 153. Dovetail strip; 154. Snap claw; 2. Fixed block; 21. Limiting slide; 211. V-shaped groove; 3. Sliding plate; 4. Limiting block; 5. Stabilizing component; 51. Stabilizing head; 511. Tightening hole; 512. Moving groove; 513. Moving hole; 52. Tightening column; 521. Conical head; 53. Moving ball; 54. Tightening spring; 55. Locking column. DETAILED DESCRIPTION

[0037] The following is combined with Figure 2-9 This application is described in further detail.

[0038] Embodiment 1 of the present application discloses a reverse CAM mechanism. Figure 2 , Figure 3 and Figure 4 A reverse CAM mechanism includes a lower mold 02, in which two sets of reverse components 1 are arranged. The two sets of reverse components 1 are arranged opposite to each other. The reverse components 1 include a mounting frame 11, a lower pressure seat 12, a movable seat 13, an upper pressure seat 14 and an upper flip insert 15.

[0039] Reference Figure 2 and Figure 3 The mounting frame 11 includes an upper frame 111 and a lower frame 112. The lower frame 112 is connected to the lower mold 02 by bolts. A plurality of positioning bars are installed on the lower frame 112. The upper frame 111 is installed above the lower frame 112 through the positioning bars and is connected to the lower frame 112 by bolts.

[0040] Reference Figure 3 and Figure 4, a fixed block 2 is connected to the upper frame 111 by bolts, and the lower pressure seat 12 and the upper pressure seat 14 are both vertically slidably fitted in the mounting frame 11, the lower pressure seat 12 is located on one side of the fixed block 2, and the upper pressure seat 14 is located on the other side of the fixed block 2. The movable seat 13 is slidably fitted on the inner bottom wall of the lower frame 112 and is located below the fixed block 2. Two relatively arranged pressure surfaces 131 are arranged on the top of the movable seat 13, and the pressure surfaces 131 are arranged obliquely, and the distance between the two pressure surfaces 131 gradually decreases from the lowest point of the movable seat 13 to the highest point of the movable seat 13. A first pressure surface 121 matching one of the pressure surfaces 131 is arranged at the bottom of the lower pressure seat 12, and a second pressure surface 141 matching the other pressure surface 131 is arranged at the bottom of the rising seat. In this embodiment, the inner wall of the upper frame 111, the fixed block 2, the lower frame 112, the lower press seat 12, the movable seat 13 and the upper press seat 14 are all connected with a sliding plate 3 by bolts, and the sliding plate 3 is used to limit the sliding direction of the lower press seat 12, the movable seat 13 and the upper press seat 14.

[0041] Reference Figure 5 A limiting slide 21 is connected to the side wall of the fixed block 2 near the upper pressure seat 14 by bolts, and a V-shaped groove 211 is opened on the side wall of the limiting slide 21 near the upper pressure seat 14. The V-shaped groove 211 is vertically arranged, and a guide slide 142 is connected to the upper pressure seat 14 near the V-shaped groove 211 by bolts, and the guide slide 142 slides in the V-shaped groove 211.

[0042] Reference Figure 3 and Figure 4 , a first reset member 122 for resetting the lower press seat 12 is installed on the upper frame 111, and a second reset member 132 for resetting the movable seat 13 is installed on the lower frame 112. In this embodiment, the first reset member 122 and the second reset member 132 are both retracting nitrogen cylinders. Two first reset members 122 are installed on the upper frame 111, and the lower press seat 12 is located between the two first reset members 122. A lower pressing plate is fixedly connected between the two first reset members 122, and the lower pressing plate is connected to the lower press seat 12 by bolts. Two second reset members 132 are installed on the lower frame 112, and the output shaft of the second reset member 132 is fixedly connected to the movable seat 13.

[0043] Reference Figure 6 The upper flip insert 15 is arranged on the top of the upper press seat 14. At least two positioning posts 151 are fixedly connected to the upper flip insert 15. In this embodiment, two are used as an example. Positioning holes are opened at the positions of the upper press seat 14 corresponding to the positioning posts 151. The positioning posts 151 are plugged into the positioning holes. The upper flip insert 15 is also provided with a plurality of locking bolts 152. In this embodiment, four are used as an example. The locking bolts 152 pass through the upper flip insert 15 and the upper press seat 14 and are threadedly engaged with the upper press seat 14.

[0044] The upwardly-turned insert 15 is limited in the installation position by the cooperation between the positioning column 151 and the positioning hole, and the upwardly-turned insert 15 is locked by the locking bolt 152 to realize the installation of the upwardly-turned insert 15.

[0045] Reference Figure 4 The fixed block 2 is connected with a limiting block 4 by bolts. The limiting block 4 is located above the upper press seat 14. The limiting block 4 is used to limit the upward stroke of the upper press seat 14. The fixed block 2 is fixedly connected with a fixing bracket, and the fixing bracket is installed with a third reset member 143. The upper flip insert 15 is fixedly connected with a support cylinder. The output shaft of the third reset member 143 abuts against the top of the support cylinder. In this embodiment, the third reset member 143 is a retracted nitrogen cylinder. The third reset member 143 is used to reset the upper press seat 14.

[0046] The implementation principle of a reverse CAM mechanism in Example 1 of the present application is: when processing the corner of the sheet metal part 01, force is applied to the lower pressure seat 12 to make the lower pressure seat 12 descend, and the movable seat 13 moves to make the upper pressure seat 14 rise, driving the upper flip insert 15 to rise, and the upper flip insert 15 punches the sheet metal part 01 to flip the corner, causing the corner to deform, thereby achieving the effect of processing the corner of the sheet metal part 01.

[0047] According to the moving direction of the lower press seat 12, the staff can use the driving device of the upper mold to drive the upper mold to press the sheet metal part 01 downward and apply pressure to the lower press seat 12 at the same time, thereby achieving the effect of punching the corner of the sheet metal part 01 by the upward flip insert 15. With this arrangement, there is no need to add an upward output driving device, making the design of the lower mold 02 simpler and tighter, and reducing the production cost of the sheet metal part 01 processing mold.

[0048] Embodiment 2: This embodiment differs from Embodiment 1 in that the installation method of the upwardly turned insert 15 is different.

[0049] Reference Figure 7 , a plurality of dovetail bars 153 are fixedly connected to the upper flip insert 15, and two of them are taken as an example in this embodiment. A dovetail groove is provided at the position of the upper pressure seat 14 corresponding to the dovetail bar 153, and the dovetail bar 153 is slidably fitted in the dovetail groove. A plurality of clamping claws 154 are fixedly connected to the upper flip insert 15, and two of them are taken as an example in this embodiment. The clamping claw 154 is made of a deformable material, such as carbon spring steel. A tightening inclined surface is provided at one end of the clamping claw 154 away from the upper flip insert 15, and a clamping groove 144 is provided at the position of the upper pressure seat 14 corresponding to the clamping claw 154, and the clamping claw 154 is clamped and fitted in the clamping groove 144.

[0050] Reference Figure 8 and Fig. 9, a plurality of stabilizing components 5 are arranged on the upper flip insert 15, and two groups are taken as an example in this embodiment. The stabilizing component 5 includes a stabilizing head 51, a tightening column 52, a moving ball 53, a tightening spring 54 and a locking column 55. The stabilizing head 51 is a rectangular column, and the stabilizing head 51 passes through the upper flip insert 15 and the upper pressure seat 14, and is plugged and matched with the upper flip insert 15 and the upper pressure seat 14. The stabilizing head 51 is provided with a tightening hole 511, a moving groove 512 and a moving hole 513, the tightening hole 511 is arranged vertically, the moving groove 512 is arranged horizontally, and two are arranged, the tightening hole 511 is connected with the moving groove 512, the moving hole 513 is arranged on the bottom wall of the moving groove 512, and is arranged coaxially with the moving groove 512, and a locking hole 145 is arranged at the position of the upper pressure seat 14 corresponding to the moving hole 513. The tightening column 52 is threadedly engaged in the tightening hole 511, and a conical head 521 is provided at the bottom end of the tightening column 52. The moving ball 53 is slidably engaged in the moving groove 512, the locking column 55 is fixedly connected to the moving ball 53 and slidably engaged in the moving hole 513, and the tightening spring 54 is sleeved on the locking column 55 and is located in the moving groove 512.

[0051] The implementation principle of a reverse CAM mechanism in Example 2 of the present application is as follows: when installing the flip-up insert 15, the staff slides the dovetail strip 153 into the dovetail groove, so that the tightening inclined surface on the clamping claw 154 abuts against the upper pressure seat 14, causing the clamping claw 154 to deform until the clamping claw 154 completely enters the clamping groove 144, the clamping claw 154 is restored, and the clamping engagement is performed in the clamping groove 144, and then the stabilizing head 51 is plugged into the upper pressure seat 14, and the tightening column 52 is rotated with a tool to lower the tightening column 52, and the moving ball 53 abuts against the conical head 521 and then moves, driving the locking column 55 to move until the locking column 55 is partially located in the locking hole 145, and the tightening spring 54 is compressed, thereby realizing the installation of the flip-up insert 15.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A reverse CAM mechanism, characterized in that: The invention comprises a lower mold (02), wherein a reverse component (1) is arranged inside the lower mold (02), wherein the reverse component (1) comprises a mounting frame (11), a lower pressure seat (12), a movable seat (13), an upper pressure seat (14) and an upward flip insert (15), wherein the movable seat (13) is slidably fitted inside the mounting frame (11), wherein two pressure-bearing surfaces (131) arranged opposite to each other are arranged on the movable seat (13), wherein the pressure-bearing surfaces (131) are inclinedly arranged, and the distance between the two pressure-bearing surfaces (131) gradually decreases from the lowest point to the highest point of the movable seat (13), wherein the lower pressure seat (12) and the upper pressure seat (14) are both vertically slidably fitted inside the mounting frame (11), wherein the lower pressure seat (12) contacts one pressure-bearing surface (131), wherein the upper pressure seat (14) contacts the other pressure-bearing surface (131), wherein the pressure-bearing surfaces (131) are arranged opposite to each other, and wherein the pressure-bearing surfaces (131) are arranged opposite to each other. The upper flip insert (15) is detachably connected to the upper pressure seat (14); the installation frame (11) is provided with a first reset member (122) for resetting the lower pressure seat (12), a second reset member (132) for resetting the movable seat (13) and a third reset member (143) for resetting the upper pressure seat (14); a dovetail strip (153) is connected to the bottom of the upper flip insert (15); a dovetail groove is provided at a position of the upper pressure seat (14) corresponding to the dovetail strip (153); the dovetail strip (153) is slidably fitted in the dovetail groove; a clamping claw (154) is connected to the upper flip insert (15); the clamping claw (154) is made of a deformable material; a clamping groove (144) is provided on the upper pressure seat (14); the clamping claw (154) is clamped and fitted in the clamping groove (144);The upper flip insert (15) is provided with a stabilizing component (5), and the stabilizing component (5) includes a stabilizing head (51), a clamping column (52), a moving ball (53), a clamping spring (54) and a locking column (55). The stabilizing head (51) passes through the upper flip insert (15) and the upper pressure seat (14), and is plugged and matched with the upper flip insert (15) and the upper pressure seat (14). The stabilizing head (51) is provided with a clamping hole (511), a moving groove (512) and a moving hole (513). The moving ball (53) is slidably matched in the moving groove (512), and the locking column (55) is slidably matched in the moving hole (513). The locking column (55) is connected to the moving ball (53). The tightening spring (54) is sleeved on the locking column (55) and is located in the moving groove (512). The upper pressure seat (14) is provided with a locking hole (145) at the position corresponding to the locking column (55). The stabilizing head (51) is provided with a tightening hole (511). The tightening hole (511) is vertically arranged and communicated with the moving groove (512). The tightening column (52) is threadedly engaged in the tightening hole (511). The bottom of the tightening column (52) is provided with a conical head (521). When the upward flip insert (15) is stabilized, the conical head (521) abuts against the moving ball (53). The locking column (55) is partially located in the locking hole (145), and the tightening spring (54) is compressed. ; 2. A reverse CAM mechanism according to claim 1, characterized in that: The first restoring member (122), the second restoring member (132) and the third restoring member (143) are all retracting nitrogen cylinders, the output shaft of the first restoring member (122) is connected to the lower pressure seat (12), the output shaft of the second restoring member (132) is connected to the moving seat (13), and the output shaft of the third restoring member (143) is connected to the upper flip insert (15).

3. A reverse CAM mechanism according to claim 1, characterized in that: A fixed block (2) is connected inside the installation frame (11), and a limiting slide (21) is connected to the side wall of the fixed block (2) close to the upper pressure seat (14). A V-shaped groove (211) is opened on the limiting slide (21), and the V-shaped groove (211) is vertically arranged. A guide slide (142) is connected to the upper pressure seat (14), and the guide slide (142) is slidably fitted in the V-shaped groove (211).

4. A reverse CAM mechanism according to claim 3, characterized in that: A limiting block (4) is installed on the fixed block (2), and the limiting block (4) is used to limit the rising stroke of the upper pressure seat (14).

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