A robot stamping workstation

Abstract

The present invention relates to the field of workpiece processing technology, in particular to a robot stamping workstation, comprising a connecting shaft, a punch and a sleeve vertically fixed on a frame, wherein the punch is arranged at the bottom of the connecting shaft, and the punch and the connecting shaft are located on the inner side of the sleeve, and a plurality of fixing frames are fixedly installed along the circumferential direction at the outer upper end of the sleeve, and a tube body is vertically installed at the bottom of the fixing frame, and a pressure rod is sleeved on the inner side of the tube body, and a clamping structure is arranged between the pressure rod and the connecting shaft, and when the punch and the iron sheet are in contact with each other, the pressure rods distributed in a ring array abut against the iron sheet. The present invention aims at the problem that the punch lifts up the iron sheet with a smaller thickness during the punching return stroke, thereby forming a local bulge, and is provided with a pressure rod and a pressure sheet with the same movement trend as the punch, and a vertical downward external force is applied by the pressure sheet and the periphery of the punching during the punching return stroke, so as to suppress the problem of bulge around the punching.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece processing, and in particular to a robot stamping workstation. Background Art

[0002] Punching is a stamping process that separates waste from material or process parts along a closed contour to obtain the required holes on the material or process parts;

[0003] When punching a thin iron sheet, in order to avoid the problem of the punch head colliding with the fixed clamping component during the punching process, the fixed clamping component is usually fixed to the edge of the thin iron sheet to ensure that the thin iron sheet is offset as a whole during the punching process;

[0004] refer to Figure 1 When the punch returns after punching a hole on the thin iron sheet, there will be a small gap between the punch and the punched hole, and upward friction will occur. Since the thin iron sheet itself is light and has the characteristics of ductility and deformation, the return punch will form a bulge in the iron sheet around the punched hole. When punching continuously, the next punching position cannot achieve the expected effect. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art that the return punch will form a bulge in the iron sheet around the punching hole, which will cause the next punching position to fail to achieve the expected effect during continuous punching, and a robot stamping workstation is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A robot stamping workstation is designed, comprising a connecting shaft, a punch and a sleeve vertically fixed on a frame, wherein the punch is arranged at the bottom of the connecting shaft, and the punch and the connecting shaft are located on the inner side of the sleeve, a plurality of fixing frames are fixedly installed along the circumferential direction on the outer upper end of the sleeve, a tube body is vertically installed at the bottom of the fixing frame, a pressure rod is sleeved on the inner side of the tube body, a clamping structure is arranged between the pressure rod and the connecting shaft, and when the punch contacts the iron sheet, the pressure rods distributed in a ring array abut against the iron sheet;

[0008] A water storage tank is provided at the bottom of the sleeve, and a protective structure is provided on the sleeve outside the water storage tank. The protective structure includes a connecting rope, an overflow tank, an overflow hole, a joint, a first partition and a second partition. The overflow tank is vertically provided on the outer wall of the sleeve, and the overflow hole connects the overflow tank and the water storage tank. The second partition is fixedly installed on the inner side of the overflow tank, and the first partition is movably arranged above the second partition. The joint is installed on one side of the first partition, and the two ends of the connecting rope are respectively fixed on the joint and the outside of the pressure rod.

[0009] Preferably, the clamping structure includes a first slot, a second slot, a connecting rod and a valve plate, the first slot is through-type arranged on the outside of the sleeve, the second slot is through-type arranged on the outside of the tube body, the connecting rod is vertically movable on the outer surface of the connecting shaft, the valve plate is horizontally slidingly arranged on the inner side of the tube body, and the end of the connecting rod away from the connecting shaft is fixed to the upper end of the valve plate.

[0010] Preferably, the first slots are distributed on the outer side of the sleeve in the form of an annular array, the second slots cooperate with the first slots, and the connecting rod is movably arranged between the second slots and the inner side of the first slots.

[0011] Preferably, an adjustment structure is provided between one end of the connecting rod and the connecting shaft.

[0012] Preferably, the adjustment structure includes a cavity, a moving block, a return spring and a guide rod, the cavity is vertically opened on the outer surface of the connecting shaft, the moving block is slidably arranged on the inner side of the cavity, the guide rod stands in the cavity, the moving block is sleeved on the outer side of the guide rod, and the return spring is sleeved on the outer side of the guide rod.

[0013] Preferably, the first partition plate and the second partition plate are configured in the same manner, and the first partition plate and the second partition plate integrally cover one side of the overflow hole.

[0014] Preferably, a pressing plate is installed at the bottom of the pressing rod, and a plurality of the pressing plates are distributed in a circular array in the circumference of the punch.

[0015] Preferably, positioning rods are symmetrically arranged at the bottom of the first partition, the positioning holes are opened on the second partition, and the positioning rods pass through the positioning holes and extend to the bottom of the second partition.

[0016] A robot stamping workstation proposed in the present invention has the beneficial effect that: in order to solve the problem that the punch lifts up a thin iron sheet in the process of completing the return stroke of punching, thereby forming a local bulge, the robot stamping workstation is provided with a pressure rod and a pressure sheet with the same movement trend as the punch. During the return stroke of punching, a vertical downward external force is applied by means of the pressure sheet and the periphery of the punching hole, thereby suppressing the problem of bulge around the punching hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the punching structure in the prior art proposed by the present invention.

[0018] Figure 2 This is a structural schematic diagram of a robot stamping workstation proposed by the present invention.

[0019] Figure 3 This is a bottom view of the structure of a robot stamping workstation proposed by the present invention.

[0020] Figure 4 This is an enlarged structural diagram of part A of a robot stamping workstation proposed by the present invention.

[0021] Figure 5 This is an enlarged structural diagram of a clamping structure of a robot stamping workstation proposed by the present invention.

[0022] Figure 6 This is an enlarged structural diagram of a protective structure of a robot stamping workstation proposed by the present invention.

[0023] Figure 7 This is a structural front view of a protective structure of a robot stamping workstation proposed by the present invention.

[0024] In the figure: connecting shaft 1, fixing frame 2, sleeve 3, first slot hole 4, positioning rod 5, protective structure 6, connecting rope 61, overflow groove 62, overflow hole 63, joint 64, first partition plate 65, second partition plate 66, pressure rod 7, pressing sheet 8, punch 9, tube body 10, cavity 11, second slot hole 12, moving block 13, return spring 14, guide rod 15, connecting rod 16, valve plate 17, water storage tank 18, positioning hole 19. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0026] Reference Figure 2 A robot stamping workstation includes a connecting shaft 1, a punch 9 and a sleeve 3 vertically fixed on a frame, wherein the punch 9 is arranged at the bottom of the connecting shaft 1, and the punch 9 and the connecting shaft 1 are located on the inner side of the sleeve 3, and a plurality of fixing frames 2 are fixedly installed along the circumferential direction on the outer upper end of the sleeve 3, a tube body 10 is vertically installed at the bottom of the fixing frame 2, and a pressure rod 7 is sleeved on the inner side of the tube body 10.

[0027] Reference Figure 3 A clamping structure is provided between the pressure rod 7 and the connecting shaft 1. When the punch 9 contacts the iron sheet, the pressure rods 7 distributed in a ring array abut against the iron sheet. The distribution of the ring array can ensure that the area radiating around the punching hole can be evenly stressed.

[0028] The clamping structure includes a first slot hole 4, a second slot hole 12, a connecting rod 16 and a valve plate 17. The first slot hole 4 is arranged through the outside of the sleeve 3, the second slot hole 12 is arranged through the outside of the tube body 10, the connecting rod 16 is arranged vertically on the outer surface of the connecting shaft 1, the valve plate 17 is arranged horizontally on the inner side of the tube body 10, and the end of the connecting rod 16 away from the connecting shaft 1 is fixed to the upper end of the valve plate 17. The first slot hole 4 is distributed in the form of a ring array on the outside of the sleeve 3, the second slot hole 12 cooperates with the first slot hole 4, and the connecting rod 16 is arranged between the second slot hole 12 and the inner side of the first slot hole 4.

[0029] During the punching process, the connecting shaft 1 plays the role of connecting the punch 9 and moves up and down inside the sleeve 3. When the connecting shaft 1 moves downward, the connecting shaft 1 is driven by the connecting column 16, and the valve plate 17 located inside the tube body 10 moves downward. The connecting column 16 also slides downward along the first slot 4 and the second slot 12. When the punch 9 reaches the contact with the iron sheet, the pressure rod 7 drives the pressing sheet 8 to contact the upper surface of the iron sheet. When punching, the pressing sheet 8 maintains a fitting relationship with the iron sheet to prevent the punch 9 from lifting part of the iron sheet upward due to the friction between the punch 9 and the cavity during the return stroke. Example

[0030] The connecting shaft 1 and the punch 9 will undoubtedly increase the working temperature of the punch 9 in the process of repeated friction with the inner wall of the sleeve 3, causing the temperature of the punch 9 to rise. The temperature rise will cause the punch 9 to wear more severely. The continuous spraying of the coolant on the punch 9 will not only cause a huge consumption of the coolant, but also the coolant will gather on the iron sheet, and the vibration generated during the punching will splash out the coolant.

[0031] refer to Figure 4 , Figure 6 and Figure 7The difference between this embodiment and the first embodiment is that a water storage tank 18 is provided at the bottom of the sleeve 3, and a protective structure 6 is provided on the sleeve 3 outside the water storage tank 18. The protective structure 6 includes a connecting rope 61, an overflow tank 62, an overflow hole 63, a joint 64, a first partition 65 and a second partition 66. The overflow tank 62 is vertically provided on the outer wall of the sleeve 3, the overflow hole 63 connects the overflow tank 62 and the water storage tank 18, the second partition 66 is fixedly installed on the inner side of the overflow tank 62, the first partition 65 is movably provided above the second partition 66, and the joint 64 is provided with a first partition 65 and a second partition 66. 4 is installed on one side of the first partition 65, and the two ends of the connecting rope 61 are respectively fixed to the joint 64 and the outside of the pressure rod 7. The first partition 65 and the second partition 66 are configured in the same manner, and the first partition 65 and the second partition 66 cover one side of the overflow hole 63 as a whole. A pressing plate 8 is installed at the bottom of the pressure rod 7, and a plurality of pressing plates 8 are distributed in a circular array around the punch 9. The bottom of the first partition 65 is symmetrically provided with positioning rods 5, and the positioning holes 19 are opened on the second partition 66, and the positioning rods 5 pass through the positioning holes 19 and extend to the bottom of the second partition 66.

[0032] According to the movement trend of the pressure rod 7 and the punch 9, an annular water storage tank 18 is opened inside the lower end of the sleeve 3 for containing coolant. The water storage tank 18 is connected to the conveying device through a pipeline. In the process of the pressure rod 7 descending and rising, the first partition 65 located above the second partition 66 is driven by the connecting rope 61 connected to the pressure rod 7 to descend and rise respectively. When the first partition 65 rises, a gap appears between the first partition 65 and the second partition 66, and the coolant in the water storage tank 18 flows out through the overflow hole 63. Due to its own neutrality, the coolant flows along the overflow tank 62 to the connecting shaft 1 and the punch 9, so as to cool the punch 9 in the punching hole. The intermittent discharging can save coolant and accurately control the coolant to flow to the punch 9 to suppress its temperature rise. Example

[0033] In the process of the punch 9 continuing to move downward after contacting the iron sheet, the pressing sheet 8 cannot continue to move downward due to the obstruction of the iron sheet. In order to ensure that the pressing sheet 8 at the lower end of the pressing rod 7 is always in contact with the surface of the iron sheet, the problem of the temporary asynchronism of the movement of the punch 9 and the pressing rod 7 must be met;

[0034] refer to Figure 5 The difference between this embodiment and the embodiments 1 and 2 is that an adjustment structure is provided between one end of the connecting rod 16 and the connecting shaft 1, and the adjustment structure includes a cavity 11, a moving block 13, a return spring 14 and a guide rod 15. The cavity 11 is vertically opened on the outer surface of the connecting shaft 1, the moving block 13 is slidably arranged on the inner side of the cavity 11, the guide rod 15 stands in the cavity 11, and the moving block 13 is sleeved on the outer side of the guide rod 15, and the return spring 14 is sleeved on the outer side of the guide rod 15;

[0035] The moving block 13 is arranged inside the cavity 11, and the moving trajectory of the moving block 13 is limited by the guide rod 15. Secondly, a return spring 14 is sleeved on the outer side of the guide rod 15. When the punch 9 continues to descend, the pressing sheet 8 should also move downward. However, due to the obstruction of the iron sheet, there is a misalignment between the connecting shaft 1 and the pressing rod 7. During the misalignment, the moving block 13 compresses the return spring 14 at the upper end and also pulls up the return spring 14 at the lower end. The moving block 13 moves upward as a whole, thereby ensuring that the pressing sheet 8 is always in contact with the surface of the iron sheet, while ensuring that the punch 9 will continue to move downward. During the return stroke of the punch 9, the moving block 13 returns to its initial position, but the contact between the pressing sheet 8 and the iron sheet continues until the punch 9 leaves the iron sheet.

[0036] The working principle of the device is:

[0037] During the punching process, the connecting shaft 1 plays the role of connecting the punch 9 and moves up and down inside the sleeve 3. When the connecting shaft 1 moves downward, the connecting shaft 1 is driven by the connecting column 16, and the valve plate 17 located inside the tube body 10 moves downward. The connecting column 16 also slides downward along the first slot 4 and the second slot 12. When the punch 9 reaches the contact with the iron sheet, the pressure rod 7 drives the pressing sheet 8 to contact the upper surface of the iron sheet. When punching, the pressing sheet 8 and the iron sheet maintain a fitting relationship to prevent the punch 9 from partially lifting the iron sheet upward due to the friction between the punch 9 and the cavity during the return process.

[0038] Secondly, in the process of the punch 9 continuing to move downward after contacting the iron sheet, the pressing sheet 8 cannot continue to move downward due to the obstruction of the iron sheet. In order to ensure that the pressing sheet 8 at the lower end of the pressure rod 7 is always in contact with the surface of the iron sheet, and at the same time to meet the problem of temporary asynchrony between the movement of the punch 9 and the pressure rod 7, the moving block 13 is arranged inside the cavity 11, and the moving trajectory of the moving block 13 is limited by the guide rod 15. Secondly, a return spring 14 is sleeved on the outer side of the guide rod 15. In the process of the punch 9 continuing to descend, the pressing sheet 8 should also move downward, but due to the blocking of the iron sheet, there is a misalignment between the connecting shaft 1 and the pressure rod 7. During the misalignment, the moving block 13 compresses the return spring 14 at the upper end, and also pulls up the return spring 14 at the lower end. The moving block 13 moves to the upper end as a whole, thereby ensuring that the pressing sheet 8 is always in contact with the surface of the iron sheet, and at the same time ensuring that the punch 9 will continue to move downward. During the return of the punch 9, the moving block 13 returns to its initial position, but the contact between the pressing sheet 8 and the iron sheet will continue until the punch 9 leaves the iron sheet.

[0039] According to the movement trend of the pressure rod 7 and the punch 9, an annular water storage tank 18 is opened inside the lower end of the sleeve 3 for holding coolant. The water storage tank 18 is connected to the conveying device through a pipeline. In the process of the pressure rod 7 descending and rising, the first partition 65 located above the second partition 66 is driven by the connecting rope 61 connected to the pressure rod 7 to descend and rise respectively. When the first partition 65 rises, a gap appears between the first partition 65 and the second partition 66, and the coolant in the water storage tank 18 flows out through the overflow hole 63. When the first partition 65 contacts the second partition 66, the overflow hole 63 is blocked. Due to its own gravity, the coolant flows along the overflow tank 62 to the connecting shaft 1 and the punch 9, so as to cool the punch 9 in the punching hole. The intermittent discharging can save coolant and accurately control the coolant to flow to the punch 9 to suppress its temperature rise.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A robot stamping workstation, comprising a connecting shaft (1), a punch (9) and a sleeve (3) vertically fixed on a frame, characterized in that: The punch (9) is arranged at the bottom of the connecting shaft (1), and the punch (9) and the connecting shaft (1) are located on the inner side of the sleeve (3); a plurality of fixing frames (2) are fixedly installed along the circumferential direction on the outer upper end of the sleeve (3); a tube body (10) is vertically installed at the bottom of the fixing frame (2); a pressure rod (7) is sleeved on the inner side of the tube body (10); a clamping structure is arranged between the pressure rod (7) and the connecting shaft (1); when the punch (9) and the iron sheet are in contact with each other, the pressure rods (7) distributed in a ring array abut against the iron sheet; A water storage tank (18) is provided at the bottom of the sleeve (3), and a protective structure (6) is provided on the sleeve (3) outside the water storage tank (18). The protective structure (6) comprises a connecting rope (61), an overflow tank (62), an overflow hole (63), a joint (64), a first partition (65) and a second partition (66). The overflow tank (62) is vertically provided on the outer wall of the sleeve (3), the overflow hole (63) is connected to the overflow tank (62) and the water storage tank (18), the second partition (66) is fixedly installed on the inner side of the overflow tank (62), the first partition (65) is movably arranged above the second partition (66), the joint (64) is installed on one side of the first partition (65), and the two ends of the connecting rope (61) are respectively fixed to the joint (64) and the outside of the pressure rod (7).

2. The robot stamping workstation according to claim 1, characterized in that: The clamping structure comprises a first slot (4), a second slot (12), a connecting rod (16) and a valve plate (17); the first slot (4) is arranged through the outside of the sleeve (3); the second slot (12) is arranged through the outside of the tube body (10); the connecting rod (16) is arranged vertically on the outer surface of the connecting shaft (1); the valve plate (17) is arranged horizontally on the inner side of the tube body (10); and one end of the connecting rod (16) away from the connecting shaft (1) is fixed to the upper end of the valve plate (17).

3. The robot stamping workstation according to claim 2, characterized in that: The first slot holes (4) are distributed on the outer side of the sleeve (3) in the form of an annular array, the second slot holes (12) and the first slot holes (4) cooperate with each other, and the connecting rod (16) is movably arranged between the second slot holes (12) and the inner side of the first slot holes (4).

4. The robot stamping workstation according to claim 3, characterized in that: An adjustment structure is provided between one end of the connecting rod (16) and the connecting shaft (1), the adjustment structure comprising a cavity (11), a moving block (13), a return spring (14) and a guide rod (15); the cavity (11) is vertically opened on the outer surface of the connecting shaft (1); the moving block (13) is slidably arranged on the inner side of the cavity (11); the guide rod (15) stands in the cavity (11); the moving block (13) is sleeved on the outer side of the guide rod (15); and the return spring (14) is sleeved on the outer side of the guide rod (15).

5. The robot stamping workstation according to claim 4, characterized in that: The first partition plate (65) and the second partition plate (66) are arranged in the same manner, and the first partition plate (65) and the second partition plate (66) integrally cover one side of the overflow hole (63).

6. The robot stamping workstation according to claim 5, characterized in that: A pressing sheet (8) is installed at the bottom of the pressing rod (7), and a plurality of the pressing sheets (8) are distributed in a circular array in the circumference of the punch (9).

7. The robot stamping workstation according to claim 6, characterized in that: Positioning rods (5) are symmetrically arranged at the bottom of the first partition (65), and a positioning hole (19) is opened on the second partition (66), and the positioning rods (5) pass through the positioning hole (19) and extend to the bottom of the second partition (66).

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