Auxiliary material penetrating device in die for punching machine

Abstract

The utility model relates to the technical field of steel belt conveying devices, and discloses an auxiliary material penetrating device in a die for a punching machine, which comprises a base, a movable frame, a translation mechanism, two rotating shafts and a swinging mechanism, the movable frame is slidably connected with the base; the translation mechanism is arranged on the base, and the output end of the translation mechanism is connected with the movable frame and used for driving the movable frame to do reciprocating translation in the conveying direction of the steel belt; the two rotating shafts are rotationally connected with the movable frame and symmetrically arranged on the two sides, extending in the steel belt conveying direction, of the lower die. A plurality of pressing arms are fixedly arranged on each rotating shaft, the tail ends of the pressing arms are connected with pressing blocks through first elastic assemblies, and the pressing blocks are used for pressing the side edges of the steel belt; the swing mechanism is installed on the movable frame, and the output end of the swing mechanism is connected with the two rotating shafts and used for driving the two rotating shafts to synchronously and reversely rotate. According to the auxiliary material penetrating device in the die for the punching machine, the function of automatically completing steel belt traction is achieved, time consumed by single-step traction is shortened, the device is matched with the beat of the punching machine, and production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel band conveyor device technical field, especially in a die for punch press is with auxiliary device that wears. BACKGROUND

[0002] The continuous punching process of punch press needs to be matched with progressive die (also known as continuous die) to realize multi-process continuous punching, and the upstream of its processing system is provided with an unwinding device, and the downstream is provided with a winding device, forming a complete automatic conveying and processing route. Among them, the steel band to be processed is uniformly unwound by the unwinding device, enters the progressive die along the preset path, and then completes a plurality of preset punching processes in turn, and the excess material after punching is wound synchronously by the downstream winding device, so that uninterrupted continuous punching processing is realized, and the production efficiency is effectively improved.

[0003] However, in actual production, when a roll of steel band is processed, a new steel band roll needs to be replaced to maintain the continuity of production. In order to avoid material waste, the head of the new roll needs to participate in the punching process, rather than being discarded directly. However, the head cannot independently pass through each punching station of the progressive die in the initial state, and needs to be pulled by the operator to move one punching step at a time. After the head completes multi-step punching, the excess material formed subsequently can be extended to the downstream winding device and clamped and fixed, at which time the processing system enters the automatic continuous punching state.

[0004] At present, the pulling operation of the head of the new roll still depends on manual operation, and the operator needs to repeatedly pull the head in coordination with the punch action throughout the process, which is labor-intensive and has obvious safety hazards. At the same time, the time consumed by manual pulling of a single punching step is much longer than the interval time between two adjacent punching actions during continuous punching, which causes the entire production process to be forced to stop and wait, greatly reducing the overall production rhythm and production efficiency.

[0005] It can be seen that the prior art still needs to be improved and improved. UTILITY MODEL CONTENT

[0006] In view of the shortcomings of the prior art described above, the purpose of the utility model is to provide a die auxiliary wear device for punch press to solve the above problems.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A die auxiliary wear device for punch press, comprising:

[0009] A base for mounting on the lower die;

[0010] A movable frame connected to the base by sliding;

[0011] A translation mechanism provided on the base, the output end of the translation mechanism is connected with the movable frame, and the translation mechanism is used to drive the movable frame to reciprocate along the conveying direction of the steel band;

[0012] Two rotating shafts, the two rotating shafts are respectively rotationally connected with the movable frame and are symmetrically arranged on two sides of the lower mold extending along the conveying direction of the steel belt; a plurality of pressing arms are fixedly arranged on each rotating shaft, and an end of each pressing arm is connected with a pressing block through a first elastic component, and the pressing block is used for pressing the side edge of the steel belt;

[0013] A swing mechanism is installed on the movable frame, an output end of the swing mechanism is connected with the two rotating shafts, and the swing mechanism is used for driving the two rotating shafts to synchronously and reversely rotate.

[0014] Further, an installation cavity is formed in the end of the pressing arm, and the pressing block is slidably connected with the installation cavity; the first elastic component comprises a plurality of first adjusting screws and a plurality of first springs, each first adjusting screw is screwed with the end of the pressing arm and extends into the installation cavity at a lower end, and the two ends of the first spring are respectively abutted with the first adjusting screw and the pressing block.

[0015] Further, a rubber pad is arranged on the lower surface of the pressing block; and an anti-skid pattern is arranged on the lower surface of the rubber pad.

[0016] Further, the pressing arm comprises a vertical arm, an adjusting block, a second elastic component and a horizontal arm, the vertical arm is fixedly arranged on the rotating shaft, the adjusting block is slidably connected with the vertical arm along the height direction of the vertical arm, the adjusting block is connected with the horizontal arm through the second elastic component, and the first elastic component is arranged at the end of the horizontal arm.

[0017] Further, the vertical arm has a U-shaped structure, a sliding groove is formed in each side of the vertical arm, and the two sides of the adjusting block are slidably connected with the sliding grooves and locked on the sliding grooves through first locking screws.

[0018] Further, the adjusting block has a rectangular frame structure, and the end of the horizontal arm is slidably connected with the adjusting block; the second elastic component comprises a sliding piece, a second spring and a second adjusting screw, the sliding piece is slidably connected with the adjusting block, the two ends of the second spring are respectively abutted with the sliding piece and the horizontal arm, the second adjusting screw is screwed with the top of the adjusting block and abutted with the sliding piece at an end.

[0019] Further, a groove extending along the length direction of the rotating shaft is formed in the peripheral wall of the rotating shaft; a protrusion slidably connected with the groove is arranged at the lower end of the vertical arm, a second locking screw is screwed on the protrusion, and the lower end of the second locking screw is abutted with the bottom of the groove.

[0020] Further, the swing mechanism comprises a first servo motor arranged on the movable frame and a transmission shaft rotationally connected with the movable frame, the output shaft of the first servo motor is in transmission connection with the transmission shaft; two worms rotating in opposite directions are arranged on the transmission shaft, a worm wheel is fixedly arranged on each rotating shaft, and one worm is in meshing engagement with one worm wheel in a one-to-one correspondence.

[0021] Further, the translation mechanism comprises a second servo motor arranged on the base, a lead screw arranged on an output shaft of the second servo motor, and a lead screw nut arranged on the movable frame; the lead screw is threadedly connected with the lead screw nut.

[0022] Advantages:

[0023] The utility model provides a kind of auxiliary threading device in die for punch press, is synchronously reversed by swing mechanism driving two rotating shafts, so that the pressure block on multiple pressure arms is elastically pressed in the two side edges of steel band, then it is translated a stamping step by translation mechanism driving movable frame, material head is realized and is pulled to next stamping station.This auxiliary threading device in die for punch press can replace artificial to complete the threading of steel band material head, and operator does not need to be close to the stamping area of progressive die, both eliminates potential safety hazard, and reduces labor intensity;At the same time, it shortens single-step pulling time consumption, can be adapted to the action interval of continuous stamping of punch press, effectively improves overall production rhythm. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The utility model provides the structure of auxiliary threading device in die for punch press Figure 1 ;

[0025] Figure 2 The structure of auxiliary threading device in die for punch press provided by the utility model Figure 2 ;

[0026] Figure 3 The structure diagram of pressure arm in auxiliary threading device in die for punch press provided by the utility model;

[0027] Figure 4 The side sectional view of pressure arm in auxiliary threading device in die for punch press provided by the utility model;

[0028] Figure 5 The explosion view of pressure arm in auxiliary threading device in die for punch press provided by the utility model;

[0029] Figure 6 The structure diagram of auxiliary threading device in die for punch press provided by the utility model in traction state;

[0030] Figure 7 The structure diagram of auxiliary threading device in die for punch press provided by the utility model in progressive die stamping state.

[0031] Reference numerals: Base 1, Guide rail 11, Movable frame 2, Translation mechanism 3, Second servo motor 31, Lead screw 32, Lead screw nut 33, Rotating shaft 4, Groove 41, Pressure arm 5, Mounting cavity 51, Vertical arm 52, Slide groove 521, First locking screw 522, Protrusion 523, Second locking screw 524, Holding block 525, Adjusting block 53, Boss 531, Second elastic component 54, Sliding component 541, Second spring 542, Second adjusting screw 543, Cross arm 55, First elastic component 6, First adjusting screw 61, Positioning pin 611, First spring 62, Pressure block 7, Rubber pad 71, Mounting hole 72, Swing mechanism 8, First servo motor 81, Drive shaft 82, Worm gear 83, Worm wheel 84, Synchronous belt drive mechanism 85, Progressive die 9, Lower die 91, Upper die 92, Steel belt 10. Detailed Implementation

[0032] This utility model provides an auxiliary material feeding device inside a die for a punch press. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0034] Please see Figures 1 to 7As shown, this utility model provides an auxiliary material feeding device for a punch press mold, including a base 1, a movable frame 2, a translation mechanism 3, two rotating shafts 4, and a swing mechanism 8. The base 1 is used to install on the lower die 91, specifically on the lower die seat of the lower die 91. The movable frame 2 is slidably connected to the base 1. The translation mechanism 3 is disposed on the base 1, and the output end of the translation mechanism 3 is connected to the movable frame 2, which is used to drive the movable frame 2 to reciprocate along the conveying direction of the steel strip 10. The two rotating shafts 4 are respectively rotatably connected to the movable frame 2 and are symmetrically disposed on both sides of the lower die 91 extending along the conveying direction of the steel strip 10. Several pressure arms 5 are fixed on each rotating shaft 4, and the end of the pressure arm 5 is connected to a pressure block 7 through a first elastic component 6. The pressure block 7 is used to press the side of the steel strip 10. The swing mechanism 8 is mounted on the movable frame 2, and the output end of the swing mechanism 8 is connected to the two rotating shafts 4, which is used to drive the two rotating shafts 4 to rotate synchronously in opposite directions, so as to drive the pressure arms 5 on both sides of the lower die 91 to move closer to or away from the steel strip 10 synchronously.

[0035] In the above, the progressive die 9 includes a lower die 91 and an upper die 92. The lower die 91 is fixedly installed on the worktable of the punch press, and the upper die 92 is fixedly installed on the slide of the punch press. The reciprocating motion of the slide of the punch press drives the upper die 92 to close or separate from the lower die 91, thereby realizing the stamping process.

[0036] In this embodiment, the working process of the auxiliary feeding device inside the die of the punch press is as follows: After a roll of steel strip is processed and a new roll of steel strip is replaced, the head of the new roll is manually introduced into the feeding end of the lower die 91 of the progressive die 9, so that it fits against the processing surface of the lower die 91 and is aligned with the initial stamping position. At this time, the punch press is in standby mode, and the upper die 92 is in the reset position. Then the punch press is started, and the slide of the punch press drives the upper die 92 to press down. The upper die 92 and the lower die 91 cooperate to complete the first stamping process on the head of the steel strip 10. Figure 6 As shown, after stamping is completed, the press slide drives the upper die 92 to return to its original position. After the upper die 92 disengages from the lower die 91, the swing mechanism 8 is activated, driving the two rotating shafts 4 to rotate synchronously in opposite directions. The two rotating shafts 4 rotate towards the steel strip 10, causing all the pressure arms 5 fixed on the rotating shafts 4 to swing synchronously towards the side of the steel strip 10 until the pressure blocks 7 at the ends of each pressure arm 5 are in contact with the two sides of the steel strip 10, and elastically pressed together by the first elastic component 6. After the pressure blocks 7 press the steel strip 10, the translation mechanism 3 is activated, driving the movable frame 2 to translate along the conveying direction of the steel strip 10 by a preset stroke. This stroke is completely consistent with the stamping step distance of the progressive die 9. Then, through the friction between the pressure blocks 7 and the steel strip 10, the material head is driven to move synchronously by a stamping step distance, so that the current processing area of ​​the material head is aligned with the next stamping station of the progressive die 9. Figure 7As shown, after the material head is pulled into position, the swing mechanism 8 starts again, driving the two rotating shafts 4 to rotate in the opposite direction, causing the pressure arms 5 on both sides to swing synchronously away from the steel strip 10, so that the pressure block 7 moves away from the steel strip 10, and all pressure arms 5 are removed from the stamping operation range of the upper die 92 and the lower die 91 to avoid interfering with subsequent stamping actions; after the pressure arms 5 are removed, the punch press starts again, and the slide drives the upper die 92 to press down to complete the second stamping. At the same time, the translation mechanism 3 drives the movable frame 2 to reset in the opposite direction to the initial position, waiting for the next pulling action; the above process is repeated until the material head has gone through multiple stamping processes, and the remaining material formed extends to the downstream winding device and is clamped and fixed. At this time, the device stops working, and the processing system automatically switches to continuous stamping state, with the unwinding device and the winding device working together to complete the automatic conveying and stamping of the steel strip 10.

[0037] With the above setup, the material threading and traction action of the steel strip 10 head can be replaced by manual labor. Operators do not need to approach the stamping area of ​​the progressive die 9, which eliminates the safety hazards of manual operation and reduces labor intensity. At the same time, the traction step distance is controlled by the translation mechanism 3, which can match the preset stamping step distance of the progressive die 9 and greatly shorten the single-step traction time. It can be adapted to the interval of continuous stamping action of the punch press, thereby effectively improving the overall production cycle.

[0038] In a preferred embodiment, see [reference] Figure 3 , 4 5. The end of the pressure arm 5 has a mounting cavity 51, and the pressure block 7 is slidably connected to the mounting cavity 51. The first elastic component 6 includes several first adjusting screws 61 and several first springs 62. Each first adjusting screw 61 is screwed to the end of the pressure arm 5, and its lower end extends into the mounting cavity 51. The two ends of the first spring 62 abut against the first adjusting screw 61 and the pressure block 7, respectively. During operation, the first spring 62 applies downward pressure through its own elastic force, so that the pressure block 7 is elastically pressed against the side of the steel strip 10, which ensures the friction required for traction and avoids damage to the steel strip 10 caused by rigid compression. At the same time, by screwing in or out the first adjusting screw 61, the depth of its insertion into the mounting cavity 51 can be changed, thereby compressing or relaxing the first spring 62, realizing the elastic force adjustment of the first spring 62 to adapt to steel strips 10 of different thicknesses and materials.

[0039] Specifically, see Figure 4 The first adjusting screw 61 has a positioning post 611 at its bottom. The pressure block 7 has a mounting hole 72 that is coaxial with the positioning post 611. The ends of the first spring 62 are respectively sleeved in the positioning post 611 and the mounting hole 72 to prevent the first spring 62 from shifting laterally or tilting during operation, and to ensure that the elastic force of the first spring 62 always acts accurately on the pressure block 7 in the vertical direction.

[0040] In a preferred embodiment, see [reference]Figure 4 , 5 The lower surface of the pressure block 7 is provided with a rubber pad 71. Specifically, the rubber pad 71 can be made of highly elastic and wear-resistant nitrile rubber or polyurethane material, and is fixed to the lower surface of the pressure block 7 by adhesive. The lower surface of the rubber pad 71 is provided with anti-slip texture. The anti-slip texture can be set as horizontal stripe texture, cross grid texture or sawtooth texture to increase the contact friction coefficient with the side of the steel strip 10.

[0041] In a preferred embodiment, see [reference] Figure 3 , 4 5. The pressure arm 5 includes a vertical arm 52, an adjusting block 53, a second elastic component 54, and a horizontal arm 55. The vertical arm 52 is fixed on the rotating shaft 4. The adjusting block 53 is slidably connected to the vertical arm 52 along its height direction. The adjusting block 53 is connected to the horizontal arm 55 through the second elastic component 54. The first elastic component 6 is located at the end of the horizontal arm 55. The vertical arm 52 and the horizontal arm 55 are perpendicular to each other and form a "7" shape. The vertical arm 52 swings synchronously with the rotating shaft 4. When the vertical arm 52 swings to a vertical state with the rotating shaft 4, the horizontal arm 55 is exactly in a horizontal state, so that the pressure block 7 at the end of the horizontal arm 55 can stably press against the side of the steel belt 10, making the direction of the pressing force perpendicular to the conveying direction of the steel belt 10.

[0042] By adjusting the height of the adjusting block 53 on the vertical arm 52, the height of the horizontal arm 55 and the end pressure block 7 can be adjusted simultaneously. This ensures that after the pressure block 7 swings into place with the rotating shaft 4, it can accurately act on the surface of the steel strip 10, effectively adapting to lower dies 91 of different heights or steel strips 10 of different thicknesses, with a wide range of applications. At the same time, the second elastic component 54 can apply elastic pressure to the horizontal arm 55 in the direction of the steel strip 10. In conjunction with the first elastic component 6, it further increases the clamping force applied by the pressure block 7 on the steel strip 10, ensuring that there is sufficient static friction between the pressure block 7 and the steel strip 10, and avoiding relative slippage during traction.

[0043] Furthermore, the vertical arm 52 has a U-shaped structure, see reference. Figure 5 The upright arm 52 has sliding grooves 521 on both sides. The two sides of the adjusting block 53 are slidably connected to the sliding grooves 521 and locked onto the sliding grooves 521 by the first locking screw 522. Specifically, the sliding groove 521 is a T-shaped groove. The two sides of the adjusting block 53 are integrally formed with bosses 531 that are adapted to the sliding grooves 521. The bosses 531 are embedded in the sliding grooves 521 and slide in cooperation with the inner wall of the sliding grooves 521, playing a stable guiding role. The first locking screw 522 passes through the sliding grooves 521 and screws onto the bosses 531. When the adjusting block 53 is adjusted to the target position along the height of the upright arm 52, tightening the first locking screw 522 can lock the adjusting block 53 onto the upright arm 52, and the connection stability is high.

[0044] Further, seeFigure 4 , 5 The adjusting block 53 has a rectangular frame structure, and the end of the cross arm 55 is slidably connected to the adjusting block 53. The sliding direction of the cross arm 55 is consistent with the sliding direction of the adjusting block 53. The second elastic component 54 includes a sliding member 541, a second spring 542, and a second adjusting screw 543. The sliding member 541 is slidably connected to the adjusting block 53, and the two ends of the second spring 542 abut against the sliding member 541 and the cross arm 55, respectively. The second adjusting screw 543 is screwed to the top of the adjusting block 53, and its end abuts against the sliding member 541. During adjustment, by screwing in or out the second adjusting screw 543, its vertical depth into the adjusting block 53 can be changed to adjust the elastic force of the second spring 542, thereby adjusting the clamping force of the pressure block 7 on the side of the steel strip 10. Furthermore, the second elastic component 54, in conjunction with the first elastic component 6, can flexibly adapt the required clamping force according to the different materials and thicknesses of the steel belt 10 and the different traction conditions. When the second elastic component 54 is not required to provide elastic clamping, the second spring 542 can be removed, and the second adjusting screw 543 can be screwed in to push the sliding member 541 down to directly abut against the end of the cross arm 55. At this time, the cross arm 55 and the adjusting block 53 form a rigid connection. Alternatively, by replacing the second spring 542 with a different elasticity specification, the clamping force adjustment range can be further increased, thereby further expanding the applicable range.

[0045] In a preferred embodiment, see [reference] Figure 3 , 5 The rotating shaft 4 has a groove 41 extending along its length on its peripheral wall. The lower end of the upright arm 52 has a protrusion 523 that slides through the groove 41. A second locking screw 524 is screwed onto the protrusion 523, and the lower end of the second locking screw 524 abuts against the bottom of the groove 41. Specifically, the pressure arm 5 also includes two symmetrically arranged semi-circular clamping blocks 525. The two clamping blocks 525 are detachably connected by fasteners such as bolts and nuts to form an annular clamping structure that fits the outer peripheral wall of the rotating shaft 4. One clamping block 525 is integrally formed or welded to the lower end of the upright arm 52, while the other clamping block 525 is a movable clamping block for easy disassembly and adjustment. The inner sidewall of the clamping block 525 fixed to the upright arm 52 is integrally formed with the protrusion 523. The protrusion 523 is embedded in the groove 41 and slides through the groove 41, serving as a guide along the length of the rotating shaft 4.

[0046] During adjustment, the pressure arm 5 can be pushed to slide along the length of the rotating shaft 4. Through the guide cooperation of the protrusion 523 and the groove 41, each pressure arm 5 can be moved to the preset pressing position with the side of the steel strip 10. After the position is adjusted, first tighten the fasteners of the two clamping blocks 525 so that the two clamping blocks 525 are tightly clamped on the peripheral wall of the rotating shaft 4. Then tighten the second locking screw 524. The position of the pressure arm 5 is locked by the contact force between the end of the second locking screw 524 and the bottom of the groove 41, ensuring that the pressure arm 5 will not move along the length of the rotating shaft 4 during the operation of the device, and that the rotating shaft 4 can drive the pressure arm 5 to rotate synchronously.

[0047] In a preferred embodiment, see [reference] Figure 2 The swing mechanism 8 includes a first servo motor 81 mounted on the movable frame 2 and a transmission shaft 82 rotatably connected to the movable frame 2. The output shaft of the first servo motor 81 is connected to the transmission shaft 82. The transmission shaft 82 is equipped with two worm gears 83 with opposite directions of rotation. Each shaft 4 is fixed with a worm wheel 84, and one worm gear 83 meshes with one worm wheel 84 in a one-to-one correspondence. During operation, the first servo motor 81 starts, driving the transmission shaft 82 to rotate around its own axis. Since the two worm gears 83 on the transmission shaft 82 have opposite directions of rotation, under the meshing transmission action of the worm gears 83 and worm wheels 84, the two shafts 4 rotate synchronously in opposite directions, thereby driving the pressure arms 5 on both sides to move closer to or further away from the steel belt 10 synchronously. By using a servo motor, the swing angle of the shaft 4 can be precisely controlled to ensure that the pressure block 7 can fit against the side of the steel belt 10 after the pressure arm 5 swings to the correct position, while ensuring that the movements of the pressure arms 5 on both sides are completely synchronized. In addition, the worm gear transmission has a self-locking function. When the pressure arm 5 swings to the target position, even if the first servo motor 81 stops supplying power, the rotating shaft 4 will not rotate due to external force, ensuring that the pressure block 7 presses the steel belt 10 in a stable state.

[0048] In the above-described configuration, the movable frame 2 has a rectangular frame structure. The lower die 91 is located within the movable frame 2, which not only does not affect the stamping action of the upper die 92 and the lower die 91, but also allows the pressure arms 5 on both sides to be symmetrically arranged on the movable frame 2. The swing mechanism 8 is located on the side of the movable frame 2 near the beginning of the steel strip 10 conveying process, and the translation mechanism 3 is located on the side of the movable frame 2 near the end of the steel strip 10 conveying process. This symmetrical layout avoids positional interference between the swing mechanism 8 and the translation mechanism 3. At the same time, the compact arrangement of components in this layout can adapt to the limited installation space within the mold, improving space utilization.

[0049] In the above, the transmission connection between the first servo motor 81 and the transmission shaft 82 can be a gear meshing transmission mechanism or a synchronous belt transmission mechanism 85. Both transmission methods are suitable for the compact layout of the movable frame 2 and ensure the reliability and accuracy of power transmission.

[0050] In a preferred embodiment, see [reference] Figure 2The translation mechanism 3 includes a second servo motor 31 mounted on the base 1, a lead screw 32 mounted on the output shaft of the second servo motor 31, and a lead screw nut 33 mounted on the movable frame 2; the lead screw 32 and the lead screw nut 33 are threadedly connected. Specifically, two guide rails 11 are arranged parallel to each other on the base 1 along the conveying direction of the steel strip 10, and six sliders are arranged at the bottom of the movable frame 2 corresponding to the positions of the guide rails 11. Each guide rail 11 is adapted to three sliders, and the sliders are slidably connected to the guide rails 11. During operation, the second servo motor 31 starts, driving the lead screw 32 to rotate around its own axis. Through the threaded connection between the lead screw 32 and the lead screw nut 33, the rotational motion is converted into the linear translational motion of the movable frame 2 along the guide rails 11. By controlling the rotation of the lead screw 32 and the precision of the transmission between the lead screw 32 and the lead screw nut 33 through the second servo motor 31, the translational stroke of the movable frame 2 can be precisely controlled, ensuring that it is completely matched with the preset stamping step distance of the progressive die 9.

[0051] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. An auxiliary material feeding device inside a punch press die, characterized in that, include: Base (1), used for mounting on the lower mold; The movable frame (2) is slidably connected to the base (1); Translation mechanism (3) is located on base (1). The output end of translation mechanism (3) is connected to movable frame (2) and is used to drive movable frame (2) to reciprocate along the conveying direction of steel belt. Two rotating shafts (4) are rotatably connected to the movable frame (2) and are symmetrically arranged on both sides of the lower mold extending along the steel strip conveying direction; several pressure arms (5) are fixed on each rotating shaft (4), and the end of the pressure arm (5) is connected to a pressure block (7) through the first elastic component (6). The pressure block (7) is used to press the side of the steel strip. The swing mechanism (8) is installed on the movable frame (2). The output end of the swing mechanism (8) is connected to two rotating shafts (4) to drive the two rotating shafts (4) to rotate synchronously in opposite directions.

2. The auxiliary material feeding device for a punch press die according to claim 1, characterized in that, The pressure arm (5) has an installation cavity (51) at its end, and the pressure block (7) is slidably connected to the installation cavity (51). The first elastic component (6) includes a plurality of first adjusting screws (61) and a plurality of first springs (62). Each first adjusting screw (61) is screwed to the end of the pressure arm (5) and its lower end extends into the installation cavity (51). The two ends of the first spring (62) abut against the first adjusting screw (61) and the pressure block (7) respectively.

3. The auxiliary material feeding device for a punch press die according to claim 1, characterized in that, The lower surface of the pressure block (7) is provided with a rubber pad (71); the lower surface of the rubber pad (71) is provided with anti-slip texture.

4. The auxiliary material feeding device for a punch press die according to claim 1, characterized in that, The pressure arm (5) includes a vertical arm (52), an adjusting block (53), a second elastic component (54), and a horizontal arm (55). The vertical arm (52) is fixed on the rotating shaft (4). The adjusting block (53) is slidably connected to the vertical arm (52) along the height direction of the vertical arm (52). The adjusting block (53) is connected to the horizontal arm (55) through the second elastic component (54). The first elastic component (6) is located at the end of the horizontal arm (55).

5. The auxiliary material feeding device for a punch press die according to claim 4, characterized in that, The upright arm (52) has a U-shaped structure. Slide grooves (521) are provided on both sides of the upright arm (52). The two sides of the adjusting block (53) are slidably connected to the slide grooves (521) and locked on the slide grooves (521) by the first locking screw (522).

6. The auxiliary material feeding device for a punch press die according to claim 4, characterized in that, The adjusting block (53) has a rectangular frame structure, and the end of the cross arm (55) is slidably connected to the adjusting block (53); the second elastic component (54) includes a sliding member (541), a second spring (542) and a second adjusting screw (543); the sliding member (541) is slidably connected to the adjusting block (53), the two ends of the second spring (542) abut against the sliding member (541) and the cross arm (55) respectively, and the second adjusting screw (543) is screwed to the top of the adjusting block (53) and its end abuts against the sliding member (541).

7. The auxiliary material feeding device for a punch press die according to claim 4, characterized in that, The circumferential wall of the rotating shaft (4) is provided with a groove (41) extending along its length direction; the lower end of the upright arm (52) is provided with a protrusion (523) that is slidably connected to the groove (41), and a second locking screw (524) is screwed onto the protrusion (523), the lower end of the second locking screw (524) abutting against the bottom of the groove (41).

8. The auxiliary material feeding device for a punch press die according to claim 1, characterized in that, The swing mechanism (8) includes a first servo motor (81) mounted on the movable frame (2) and a transmission shaft (82) rotatably connected to the movable frame (2). The output shaft of the first servo motor (81) is connected to the transmission shaft (82) in a transmission connection. The transmission shaft (82) is provided with two worms (83) with opposite directions of rotation. Each rotating shaft (4) is fixed with a worm wheel (84). One worm (83) and one worm wheel (84) mesh with each other in a one-to-one correspondence.

9. The auxiliary material feeding device for a punch press die according to claim 1, characterized in that, The translation mechanism (3) includes a second servo motor (31) on the base (1), a lead screw (32) on the output shaft of the second servo motor (31), and a lead screw nut (33) on the movable frame (2); the lead screw (32) and the lead screw nut (33) are threadedly connected.

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