Stamping fixtures for bending

Abstract

The application relates to the field of industrial manufacturing, in particular to a stamping jig for bending, which comprises a jig body, a positioning groove for placing a material strip to be processed is formed in the jig body, a positioning column matched with a mounting hole on the material strip is arranged at the position of the jig body relative to the bottom of the positioning groove, and the positioning groove is slightly wider than the material strip. The application has the advantages of improving stamping precision and reducing the waste rate.

Description

Technical Field

[0001] This application relates to the field of industrial manufacturing, and in particular to a stamping fixture for bending. Background Technology

[0002] Stamping dies are special process equipment used in cold stamping to process materials into parts. The principle is to use dies installed on a press to apply pressure to the material, causing the material to separate or plastically deform.

[0003] A component for a server rack is disclosed in related technologies, comprising a long strip of material with mounting holes. During processing, the worker manually places the strip in the approximate position and then directly punches it, creating a cutting edge on the strip that facilitates bending.

[0004] Because the placement of the strip during the stamping process is roughly determined by the worker's intuition, the stamping position is inaccurate, which may cause the stamped part to overlap with the mounting hole position, resulting in obvious deficiencies. Summary of the Invention

[0005] To improve the accuracy of the stamping position of the strip, this application provides a stamping fixture for bending.

[0006] The present application provides a stamping fixture for bending, which adopts the following technical solution:

[0007] A stamping fixture for bending includes a fixture body, on which a positioning groove for placing a strip of material to be processed is formed, and a positioning post is provided on the fixture body at a position relative to the bottom of the positioning groove, which is inserted into a mounting hole on the strip of material.

[0008] By adopting the above technical solution, the worker places the material strip in the positioning groove and inserts the positioning post into the mounting hole to position the material strip on the fixture body, which helps to improve the accuracy of the punching position of the cutting edge on the material strip relative to the mounting hole.

[0009] Optionally, the positioning groove is slightly wider than the material strip.

[0010] By adopting the above technical solution, it is easier for workers to put the material strips into the positioning groove.

[0011] Optionally, a mounting groove is provided on one side of the fixture body, which is located below and communicates with the positioning groove. Two parallel rotating rods are rotatably arranged on the fixture body relative to the mounting groove. Multiple top plates are provided on the rotating rods circumferentially for rotating into the positioning groove and lifting the material strip. A drive motor electrically connected to the control system is also provided on the fixture body relative to the mounting groove. The output shaft of the drive motor is driven to the two rotating rods through a sprocket and a chain.

[0012] By adopting the above technical solution, the drive motor drives two rotating rods to rotate synchronously through a sprocket and a chain. The rotating rods drive multiple top material plates to rotate, and the multiple top material plates rotate into the positioning groove in sequence and push out the material strip in the positioning groove, thereby facilitating the workers to pick up the material.

[0013] Optionally, the top of the fixture body is provided with a button that is electrically connected to the control system.

[0014] By adopting the above technical solution, each time a worker presses a button, the drive motor controls the rotating rod to rotate through a set angle, thus facilitating material handling.

[0015] Optionally, an elastic pad is provided at the other end of the top material plate relative to the rotating rod, and two magnetic pieces are provided on the side of the elastic pad facing away from the rotating rod, with the two magnetic pieces located on both sides of the top material plate in the circumferential direction relative to the rotating rod.

[0016] By adopting the above technical solution, when the material of the strip is magnetic metal, the magnetic sheet will be attracted to the strip's magnetism during the process of the top plate pushing the strip out of the positioning groove, thereby improving the stability of the top plate pushing the strip out of the positioning groove.

[0017] Optionally, the top plate has an insertion groove at the end away from the rotating rod, and a slide bar located at the midpoint of the elastic pad slides in the insertion groove. A tension pin slides through the top plate, passing through the insertion groove and the slide bar. There are two positions on the top plate for the tension pin to slide through, and two magnetic pieces on the same elastic pad are inserted and engaged.

[0018] By adopting the above technical solution, when the material strip does not have the property of being attracted to the magnetic sheet, the worker bends the elastic pad at the midpoint of its length and inserts it into the insertion groove. The tension pin is then used to press the bend of the elastic pad together, so that the two magnetic sheets are inserted into a whole. This provides stable support for the non-magnetic material strip during its ejection.

[0019] Optionally, clearance grooves are provided on both sides of the top material piece along the depth direction of the insertion groove, and the clearance grooves are connected to the insertion grooves. A hook is provided on one side of the top material piece along its length, and a blind groove for pulling wires is provided on the other side, which is connected to the clearance groove. A pulling block slides in the blind groove for pulling wires, and a compression spring is provided between the pulling block and the closed end of the blind groove for pulling wires. A pull wire is attached to the hook, and the pull wire passes around the elastic pad and is tied to the pulling block.

[0020] By adopting the above technical solution, when the non-magnetic material strip is ejected, the worker moves the lever, which, together with the blind groove of the pull wire, squeezes the spring. The pull wire pulls the midpoint of the elastic pad length into the insertion groove and causes bending deformation. This is simpler than manually bending the elastic pad directly and inserting it into the insertion groove.

[0021] Optionally, a threading hole is provided at the midpoint of the length of the elastic pad along its width direction for the pull wire to slide through.

[0022] By adopting the above technical solution, the threading hole can limit the pull wire, reduce the pull wire deviation, and cause the worker to manually adjust the position of the pull wire before pulling the elastic pad to bend and deform.

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

[0024] 1. The worker places the strip into the positioning groove and inserts the positioning pin into the mounting hole to position the strip on the fixture body, which helps to improve the accuracy of the punching position of the cutting edge on the strip relative to the mounting hole.

[0025] 2. The drive motor drives two rotating rods to rotate synchronously through a sprocket and a chain. The rotating rods drive multiple top material plates to rotate, and the multiple top material plates rotate into the positioning groove in sequence and push out the material strip in the positioning groove, which makes it convenient for workers to pick up the material.

[0026] 3. When the material of the strip is magnetic metal, the magnetic sheet will be attracted to the strip's magnetism during the process of the top plate pushing the strip out of the positioning groove, thereby improving the stability of the top plate pushing the strip out of the positioning groove.

[0027] 4. When the material strip does not have the property of being attracted to the magnetic sheet, the worker bends the elastic pad at the midpoint of its length and inserts it into the insertion groove. The tensioning pin is then used to press the bend of the elastic pad together, so that the two magnetic sheets are inserted into a whole. This provides stable support for the non-magnetic material strip during the ejection process.

[0028] 5. When used for ejecting non-magnetic material strips, the worker moves the lever, which, in conjunction with the blind groove of the pull wire, compresses the spring. The pull wire pulls the midpoint of the elastic pad's length into the insertion groove, causing it to bend and deform. This is simpler than manually bending the elastic pad directly and inserting it into the insertion groove. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application.

[0030] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this application.

[0031] Figure 3 This is a schematic diagram showing the positional relationship between the rotating rod, chain, and sprocket in Embodiment 2 of this application.

[0032] Figure 4This is an exploded view showing the positional relationship between the slider, elastic pad, and top plate in Embodiment 2 of this application.

[0033] Figure 5 This is a cross-sectional view of the elastic pad inserted into the insertion slot after being bent in Embodiment 2 of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Fixture body; 101. Positioning groove; 102. Mounting groove; 2. Positioning post; 3. Rotating rod; 4. Ejector plate; 41. Insertion groove; 42. Clearance groove; 5. Drive motor; 6. Chain; 7. Sprocket; 9. Elastic rubber pad; 91. Threading hole; 10. Magnetic sheet; 11. Sliding bar; 12. Tensioning pin; 13. Hook; 14. Pulley; 15. Compression spring; 16. Pull line. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0036] This application discloses a stamping fixture for bending.

[0037] Example 1

[0038] Reference Figure 1 The stamping fixture for bending includes a fixture body 1. A positioning groove 101 for placing the material strip to be processed is horizontally opened on the fixture body 1. The positioning groove 101 is slightly wider than the material strip, so that the worker can conveniently put the material strip into the positioning groove 101.

[0039] Reference Figure 1 The fixture body 1 is threaded with a vertically arranged positioning pin 2 at the position relative to the bottom of the positioning groove 101. The positioning pin 2 is used to engage with the mounting hole on the material strip.

[0040] The implementation principle of Example 1 is as follows: the positioning groove 101 and the positioning cooperation position the material strip on the fixture body 1, thereby improving the accuracy of the stamping position on the material strip and reducing the scrap rate.

[0041] Example 2

[0042] Reference Figure 2 and Figure 3 The difference between this embodiment and embodiment 1 is that: the fixture body 1 has an installation groove 102 on the side opposite to the worker's operating position, and the installation groove 102 is located below the positioning groove 101 and partially communicates with it.

[0043] The fixture body 1 is rotatably mounted with two parallel rotating rods 3 in the mounting groove 102. The rotating rods 3 are evenly arranged with four material lifting blades in the circumferential direction. The material lifting blades are rotated into the positioning groove 101 through the aforementioned partially connected position and are used to lift the material strip.

[0044] The fixture body 1 is bolted with a drive motor 5 that is electrically connected to the control system at a position relative to the mounting groove 102. The output shaft of the drive motor 5 is driven to two rotating rods 3 through a sprocket 7 and a chain 6. A button (not shown in the figure) that is electrically connected to the control system is arranged on the top of the fixture body 1.

[0045] Reference Figure 2 and Figure 3 After the material strip is stamped, the worker presses the button once. At this time, the drive motor 5 drives the rotating rod 3 to rotate through the sprocket 7 and the chain 6. The rotating rod 3 drives the top material blade to rotate through a certain angle and then stops moving. The rotating blade rotates into the positioning groove 101 and pushes the material strip out of the positioning groove 101, thus making it convenient for the worker to pick up the material.

[0046] After the worker finishes taking the material, press this button again to drive the motor 5 to drive the top material piece 4 to rotate completely out of the positioning groove 101. After that, the worker manually puts the material strip to be processed into the positioning groove 101.

[0047] Reference Figure 3 , Figure 4 and Figure 5 The top plate 4 has a slot 41 at one end relative to the rotating rod 3 and an elastic pad 9 is arranged there. A slide bar 11 slides in the slot 41 and is bonded to the midpoint of the length of the elastic pad 9.

[0048] Two magnetic pieces 10 are bonded to the side of the elastic pad 9 facing away from the rotating rod 3. The two magnetic pieces 10 are located on both sides of the top material plate 4 relative to the rotating rod 3, and the two magnetic pieces 10 on the same elastic pad 9 are inserted and matched.

[0049] Reference Figure 3 , Figure 4 and Figure 5 A tensioning pin 12 is slidably inserted on the top material plate 4. There are two positions on the top material plate 4 for the tensioning pin 12 to slide through. The tensioning pin 12 also slides through the insertion groove 41 and the slide bar 11. The tensioning pin 12 is inserted at different positions to lock the elastic rubber pad 9 in different states.

[0050] Reference Figure 3 , Figure 4 and Figure 5 When the material of the strip is magnetic metal, the elastic pad 9 is completely outside the insertion slot 41. During the rotation of the elastic pad 9 driven by the top plate 4, the two pads on the elastic pad 9 will be magnetically attracted to the strip and stick tightly. This helps to improve the stability of the strip during the process of being pushed out of the positioning slot 101 and reduces the possibility of the strip falling off the top plate 4 due to inertia. When the worker picks up the material, the magnetic plate 10 will be forcefully pulled apart from the strip.

[0051] Reference Figure 3 , Figure 4 and Figure 5 When the material of the strip is non-magnetic metal, the worker bends the elastic pad 9 at the midpoint and inserts it into the insertion slot 41. The position of the elastic pad 9 is locked by changing the insertion position of the tension pin 12. At the same time, the two corresponding magnetic pieces 10 are inserted and matched.

[0052] In this case, when the top plate 4 rotates to a stop, the contact area between the two magnetic plates 10 and the material strip is exactly at its maximum, which also reduces the possibility of the material strip falling off the top plate 4.

[0053] Reference Figure 3 , Figure 4 and Figure 5 Both sides of the top material plate 4 along the length direction of the insertion groove 41 are provided with clearance grooves 42, which are connected to the insertion groove 41. One side of the top material plate 4 along the length direction is integrally formed with a hook 13, and the other side is provided with a blind groove for pulling wire (not shown in the figure) that is collinear with and connected to the clearance groove 42.

[0054] A lever 14 slides within the blind slot of the wire guide. A compression spring 15 supports the lever 14 and the closed end of the blind slot. A pull line 16 is attached to the hook 13. The pull line 16 passes around the elastic pad 9 and is tied to the lever 14.

[0055] Reference Figure 3 , Figure 4 and Figure 5 The worker slides the lever 14 to compress the spring 15, thereby pulling the wire 16 to apply tension to the midpoint of the elastic pad 9. The elastic pad 9 bends under the force and is pulled into the insertion groove 41. The operation is relatively simple.

[0056] Reference Figure 3 , Figure 4 and Figure 5 At the midpoint of the length of the elastic pad 9, a thread hole 91 is provided along its width direction for the pull wire 16 to slide through. The thread hole 91 can limit the pull wire 16 and reduce the deviation of the pull wire 16. Before the elastic pad 9 is pulled and bent, the worker needs to manually adjust the position of the pull wire 16.

[0057] The implementation principle of a stamping fixture for bending according to an embodiment of this application is as follows: After the strip is stamped, the worker presses a button once. At this time, the drive motor 5 drives the rotating rod 3 to rotate through the sprocket 7 and chain 6. The rotating rod 3 drives the ejector blade to rotate through a certain angle and then stops moving. The rotating blade rotates into the positioning groove 101 and ejects the strip from the positioning groove 101, thus facilitating the worker to pick up the material. After the worker has finished picking up the material, the button is pressed again, and the drive motor 5 drives the ejector plate 4 to rotate completely out of the positioning groove 101. After that, the worker manually puts the strip to be processed into the positioning groove 101.

[0058] When the material strip is made of magnetic metal, the elastic pad 9 is completely located within the insertion slot 41. During the process of the ejector plate 4 ejecting the material strip, the magnetic sheet 10 is magnetically attracted to the material strip. When the material is removed, the magnetic sheet 10 and the material strip are forcefully pulled apart.

[0059] When the material of the material strip is a non-magnetic metal, the worker slides the lever 14 to compress the spring 15, thereby applying tension to the midpoint of the elastic pad 9 via the pull wire 16. The elastic pad 9 bends under the force and is pulled into the insertion slot 41, where the two corresponding magnetic pieces 10 are inserted and engaged. In this case, when the top material plate 4 rotates to a stop, the contact area between the two magnetic pieces 10 and the material strip is exactly at its maximum.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stamping fixture for bending, characterized in that: The fixture includes a fixture body (1), on which a positioning groove (101) for placing a strip of material to be processed is provided. A positioning post (2) is positioned on the fixture body (1) at a position relative to the bottom of the positioning groove (101) to engage with a mounting hole on the strip. A mounting groove (102) is provided on one side of the fixture body (1) extending inwards. The mounting groove (102) is located below and communicates with the positioning groove (101). Two parallel rotating rods (3) are rotatably arranged on the fixture body (1) relative to the mounting groove (102). The rotating rod (3) is circumferentially provided with multiple top pieces (4) for rotating into the positioning groove (101) and lifting the material strip. The fixture body (1) is also provided with a drive motor (5) electrically connected to the control system at a position relative to the mounting groove (102). The output shaft of the drive motor (5) is driven to the two rotating rods (3) through a sprocket (7) and a chain (6). An elastic rubber pad (9) is provided at the other end of the top piece (4) relative to the rotating rod (3). Two magnetic pieces (10) are provided on the side of the elastic rubber pad (9) facing away from the rotating rod (3). The top plate (4) has an insertion groove (41) at one end away from the rotating rod (3). A slide bar (11) located at the midpoint of the elastic pad (9) slides in the insertion groove (41). A tension pin (12) slides through the top plate (4). The tension pin (12) slides through the insertion groove (41) and the slide bar (11). There are two positions on the top plate (4) for the tension pin (12) to slide through. Two magnets (10) on the same elastic pad (9) can be inserted and fitted together. The two magnets (10) in the length direction of the top plate (4) are... A clearance groove (42) is provided along the depth direction of the insertion groove (41) on the side. The clearance groove (42) communicates with the insertion groove (41). A hook (13) is provided on one side of the top material piece (4) along its length direction. A blind groove for pulling wires is provided on the other side, which communicates with the clearance groove (42). A lever block (14) slides in the blind groove for pulling wires. A compression spring (15) is provided between the lever block (14) and the closed end of the blind groove for pulling wires. A pull wire (16) is hung on the hook (13). The pull wire (16) passes around the elastic rubber pad (9) and is tied to the lever block (14).

2. The stamping fixture for bending according to claim 1, characterized in that: The positioning groove (101) is slightly wider than the material strip.

3. The stamping fixture for bending according to claim 1, characterized in that: The top of the fixture body (1) is provided with a button that is electrically connected to the control system.

4. The stamping fixture for bending according to claim 1, characterized in that: The elastic pad (9) has a thread hole (91) at the midpoint of its length along its width direction for the pull wire (16) to slide through.

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