A middle plate of a bending machine

Abstract

The present invention provides an intermediate plate of a bending machine, which belongs to the technical field of bending equipment. The present invention provides a telescopic slide groove with a lower end connected to the slot on the connecting plate and above the slot, and a slider is provided in the telescopic slide groove, and a compression spring is provided between the slider and the upper end of the telescopic slide groove, and the lower end of the slider selectively extends into the slot, so that when the connecting clip on the bending machine head is inserted into the slot, the end of the slider away from the telescopic spring abuts against the connecting clip, and when the position of the pad is adjusted to reduce the distance between the bending machine head and the intermediate body, the slider can be pushed toward the slot by the compression spring, thereby reversely pushing the connecting plate upward relative to the bending machine head, thereby realizing automatic fine-tuning of the intermediate plate on the bending machine head, without the operator having to manually support the bottom of the intermediate plate or the bottom of the bending tool to lift, the operation is more convenient, and the operation process is safer.

Description

Technical Field

[0001] The present invention relates to the technical field of bending equipment, in particular to an intermediate plate of a bending machine. Background Art

[0002] As the main equipment for sheet metal bending processing, the bending machine sets an intermediate plate between the bending machine head and the mold, and installs the bending tool through the intermediate plate, so that the bending machine head can drive the bending tool toward the mold to achieve the bending operation on the sheet metal on the mold.

[0003] At present, the existing intermediate plates on the market have a simple structure. For example, the intermediate plate of a bending machine disclosed in patent CN107812831A has a rear plate and a front plate on both sides of the intermediate plate body, a connecting plate on the upper side of the front plate, a slider on the upper side of the intermediate plate body, the slider is connected to the connecting plate, the slider and the intermediate plate body are connected through an inclined surface, and a first through hole, a second through hole and a third through hole are sequentially provided on the slider. The intermediate plate body is connected to the bending machine, and the adjusting bolts on the first through hole and the third through hole are loosened respectively, and then the adjusting bolt on the second through hole is adjusted to make the slider move parallelly through the synchronous block. After adjusting the height, the adjusting bolts on the first through hole and the third through hole are tightened respectively, and the first through hole, the second through hole and the third through hole are arranged on the same straight line, the first through hole is a first threaded hole, the second through hole is a second threaded hole, and the third through hole is a third threaded hole. The first threaded hole, the second through hole are The threaded hole and the third threaded hole are respectively provided with adjusting bolts, and the position of the slider on the middle plate body is adjusted by turning the adjusting bolts, and the filling thickness of the slider between the middle plate and the bending machine is adjusted with the help of the inclined surface between the slider and the middle plate body, so as to achieve precise adjustment of the overall size of the middle plate to meet the bending requirements. However, in actual use, the middle plate has no structure in contact with the bending machine except for the connection between the connecting plate and the bending machine and the abutment of the slider against the bending machine. Moreover, the connecting plate is only provided with a card slot that is connected to the connecting card strip on the head of the bending machine. When the middle plate is moved down a certain distance, the middle plate can move down under its own gravity, and when the middle plate is moved up a certain distance, it is necessary to manually support and lift the middle plate, which is not only cumbersome to operate and increases the burden on the staff, but also poses safety risks such as collision and injury, which is not conducive to the efficient use of the bending machine. Summary of the Invention

[0004] In response to the above-mentioned problems existing in the prior art, the present invention aims to provide an intermediate plate of a bending machine, in which a lifting and resetting member is provided on the connecting plate, which is arranged vertically downward and the lower end of which extends into the card slot. That is, when the adjustment pad moves to reduce the distance between the bending machine head and the intermediate body, the connecting plate can be automatically driven up by the lifting and resetting member, and the retraction margin between the bending machine head and the intermediate body can be automatically adaptively supplemented. There is no need to manually support the bottom of the intermediate plate or the bottom of the bending tool for lifting, which is more convenient to use.

[0005] The specific technical solutions are as follows:

[0006] A middle plate of a bending machine, comprising a connecting plate, an intermediate body, a pad, a front splint and a rear splint, one side of the upper end of the intermediate body is fixed to one side of the lower end of the connecting plate, one side of the upper end of the connecting plate is provided with a card slot and is connected to the connecting card strip on the bending machine head, the pad is arranged on the top surface of the upper end of the intermediate body and abuts against the bottom surface of the bending machine head, the bottom surface of the pad and the top surface of the intermediate body are inclined surfaces that fit each other, the front splint and the rear splint are respectively arranged on both sides of the lower end of the intermediate body, and have the following characteristics A telescopic slide is provided on the connecting plate and above the card slot in the vertical direction. The lower end of the telescopic slide is connected to the card slot and a neck is formed at the connection between the two. A slider arranged in a "T" shape is slid in the telescopic slide. The small head end of the slider selectively extends into the card slot from the neck. A compression spring is provided between the large head end of the slider and the upper end of the telescopic slide. The telescopic slide, the slider and the compression spring constitute a lifting and resetting component, and when the connecting card strip is inserted into the card slot, the small head end of the slider rests on the top surface of the connecting card strip.

[0007] The above-mentioned intermediate plate of a bending machine, wherein a locking hole and two adjusting holes are arranged at intervals in the middle of the connecting plate, the locking hole and the adjusting hole are located in the same horizontal plane, and the two adjusting holes are symmetrically arranged about the locking hole, the locking hole is a strip hole arranged in the vertical direction, and at the same time, a horizontally arranged locking bolt is passed through the locking hole, the threaded end of the locking bolt is threadedly connected to the pad, and a horizontally arranged adjusting screw is threadedly connected in each adjusting hole, and the threaded end of the adjusting screw is against one side of the pad.

[0008] The above-mentioned intermediate plate of a bending machine, wherein a pendulum hole is provided through the center of the front splint, the pendulum hole is a stepped hole, the end with a larger aperture of the pendulum hole is located on the side of the front splint away from the intermediate body, and the end with a larger aperture of the pendulum hole is arranged in a bowl shape, a pendulum bolt is installed in the pendulum hole, the edge of the connection between the large head end and the small head end of the pendulum bolt is arranged in an arc shape and fits into the end with a larger aperture of the pendulum hole, and the small head end of the pendulum bolt is threadedly connected to the intermediate body.

[0009] The above-mentioned intermediate plate of a bending machine, wherein the upper end of the front splint is threadedly connected to an adjusting rod, one end of the adjusting rod is against one side of the intermediate body, and the other end of the adjusting rod extends out of the front splint. At the same time, a rotating handle is installed on the end of the adjusting rod extending out of the front splint.

[0010] The above-mentioned intermediate plate of the bending machine, wherein avoidance holes are opened on the front splint and on both sides of the deflection hole, and connecting holes and through holes corresponding to the avoidance holes are opened on the rear splint and the intermediate body, and a locking bolt passes through the through hole and is threadedly connected to the connecting hole.

[0011] The above-mentioned intermediate plate of a bending machine, wherein reset holes are provided on the front splint and located on both sides of the deflection hole, and on the rear splint and located next to the connecting hole, and a support column is provided in the reset hole. The support column is passed through the reset hole and fixedly connected to one side of the intermediate body, and a reset spring is provided outside the support column and located between the front splint and the intermediate body, and between the rear splint and the intermediate body.

[0012] The above-mentioned intermediate plate of a bending machine, wherein the lower ends of the front and rear splints and one side close to the middle body are both provided with a first embedding groove, a limiting clip is provided in the first embedding groove, and one side of the limiting clip extends out of the first embedding groove.

[0013] The above-mentioned intermediate plate of a bending machine, wherein a second embedding groove is provided at the lower end of the front splint and the rear splint and on one side close to the intermediate body, the second embedding groove is located above the first embedding groove, and both ends of the second embedding groove are provided with protruding columns. At the same time, an auxiliary spring is provided in the second embedding groove, and the two ends of the auxiliary spring are respectively installed on the two protruding columns, and one side of the auxiliary spring protrudes outside the second embedding groove.

[0014] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut.

[0015] The above-mentioned intermediate plate of the bending machine, wherein a plurality of guide grooves are provided on the inner wall of the large end of the auxiliary adjustment hole and along its axial direction, and a plurality of protruding guide strips are provided on the outer wall of the guide sleeve along the axial direction of the rotating shaft, and a guide strip is slidably arranged in a guide groove.

[0016] The positive effects of the above technical solution are:

[0017] The above-mentioned middle plate of the bending machine is provided with a telescopic slide with a lower end connected to the slot on the connecting plate and above the slot. At the same time, a slider is provided in the telescopic slide, and a compression spring is provided between the slider and the upper end of the telescopic slide. The telescopic slide, the slider and the compression spring constitute a jacking and reset component, and when the connecting strip on the head of the bending machine is inserted into the slot, the end of the slider facing away from the telescopic spring rests on the top surface of the connecting strip, so that when the adjustment pad moves to reduce the distance between the head of the bending machine and the middle body, the connecting plate can be automatically driven up by the jacking and reset component, thereby automatically adapting to and supplementing the retraction margin between the head of the bending machine and the middle body, meeting the automatic fine-tuning requirements, and there is no need for the operator to manually support the bottom of the middle plate or the bottom of the bending tool for lifting, which is more convenient to use and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of an embodiment of a middle plate of a bending machine according to the present invention;

[0019] Figure 2 This is a schematic diagram of the installation of a lifting and resetting member according to a preferred embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation of a rotating shaft according to a preferred embodiment of the present invention;

[0021] Figure 4 A structural diagram of a rotating shaft according to a preferred embodiment of the present invention;

[0022] Figure 5 Schematic diagram of a slider according to a preferred embodiment of the present invention.

[0023] In the accompanying drawings: 1. connecting plate; 11. slot; 12. locking hole; 13. locking bolt; 14. auxiliary adjustment hole; 141. guide groove; 2. middle body; 21. reinforcement hole; 211. reinforcement block; 3. pad; 4. front splint; 41. deflection hole; 42. deflection bolt; 43. adjusting rod; 44. first embedded groove; 45. limit clamping strip; 46. second embedded groove; 47. auxiliary spring; 431. rotating handle; 5. rear splint; 51. reset hole; 52. support column; 53. reset spring; 6. lifting reset part; 61. telescopic slide; 62. slider; 63. compression spring; 64. rotating shaft; 65. guide sleeve; 621. fine-tuning hole; 641. first matching block; 642. first matching hole; 643. shift rod; 651. guide strip. Implementation Method

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments are combined with the attached Figure 1 To the attached Figure 5The technical solution provided by the present invention is described in detail, but the following content is not intended to limit the present invention.

[0025] Figure 1 FIG. 1 is a structural diagram of an embodiment of a bending machine intermediate plate of the present invention. Figure 1 As shown, the intermediate plate of the bending machine provided in this embodiment includes: a connecting plate 1, an intermediate body 2, a pad 3, a front splint 4 and a rear splint 5. At this time, one side of the upper end of the intermediate body 2 is fixed to one side of the lower end of the connecting plate 1 by a fixing bolt. At the same time, a card slot 11 is opened on one side of the upper end of the connecting plate 1 and is connected to the connecting card strip on the bending machine head, that is, the connecting plate 1 serves as a transition structure connecting the intermediate body 2 and the bending machine head. In addition, the pad 3 is set on the top surface of the upper end of the intermediate body 2. At the same time, the top surface of the pad 3 is against the bottom surface of the bending machine head. The bottom surface of the pad 3 and the top surface of the intermediate body 2 are mutually fitted inclined surfaces. That is, when the pad 3 slides on the intermediate body 2, due to the fitted inclined surfaces between the pad 3 and the intermediate body 2, the total height of the pad 3 and the intermediate body 2 will change, which satisfies the subsequent fine-tuning of the intermediate plate by adjusting the position of the pad 3. In addition, the front clamping plate 4 and the rear clamping plate 5 are respectively arranged on both sides of the lower end of the middle body 2, and the bending tool is clamped by the front clamping plate 4 and / or the rear clamping plate 5 to meet the quick disassembly requirement of the bending tool on the middle plate.

[0026] Figure 2 FIG. 1 is a schematic diagram of the installation of a lifting and resetting member according to a preferred embodiment of the present invention. Figure 1 and Figure 2As shown, a telescopic slot 61 is provided on the connecting plate 1 and above the card slot 11 in the vertical direction, so that the arrangement direction of the telescopic slot 61 is consistent with the fine-tuning direction of the middle plate, providing conditions for automatically driving the connecting plate 1 to be lifted during subsequent fine-tuning. In addition, the lower end of the telescopic slot 61 is connected to the card slot 11 and a constriction is formed at the connection point between the two, forming a structure with a larger upper portion and a smaller lower portion. At the same time, a slider 62 arranged in a "T" shape is slidably provided in the telescopic slot 61, so that the slider 62 has a structure with a larger cross-section at one end and a smaller cross-section at the other end. When the slider 62 is slid into the telescopic slot 61, the small end of the slider 62 selectively extends from the constriction into the card slot 11. At the same time, the constriction of the telescopic slider 62 prevents the slider 62 from falling out of the telescopic slot 61. When the cam 62 is in the closed position, the spring 63 is pressed against the top of the slide 62, and the spring 63 is pressed against the top of the slide 62, so that the slide 62 is pushed out of the closed position, so that the slide 62 is pressed against the top of the slide 62, so that the slide 62 is pushed up relative to the slide 62, thereby meeting the fine adjustment requirements. In addition, the telescopic slide 61, the slider 62 and the compression spring 63 constitute a lifting and resetting component 6, that is, the automatic upward fine-tuning of the middle plate relative to the bending machine head is achieved through the lifting and resetting component 6, and the operator does not need to manually support the bottom of the middle plate or the bottom of the bending tool to lift it, which is more convenient to use and safer.

[0027] More specifically, a locking hole 12 and two adjustment holes are spaced apart in the middle of the connecting plate 1. The locking hole 12 and the adjustment hole are located in the same horizontal plane, and the two adjustment holes are symmetrically arranged about the locking hole 12, ensuring that when the pad 3 is subsequently adjusted through the two adjustment holes, the pad 3 can maintain balance and the adjustment accuracy is higher. In addition, the locking hole 12 is a strip-shaped hole arranged in the vertical direction, so that the locking hole 12 has an avoidance margin in the movement direction of the connecting plate 1, so that when the pad 3 moves up or down through the inclined surface, the locking hole 12 can adapt to the movement requirements of the pad 3, and the structural design is more reasonable. At the same time, a horizontally arranged locking bolt 13 is passed through the locking hole 12, and the threaded end of the locking bolt 13 is threadedly connected to the pad 3, so that after the adjustment is completed, the pad 3 can be stably connected to the connecting plate 1 through the locking bolt 13, providing conditions for the pad 3 to be stably located between the middle body 2 and the bending machine head during processing. In addition, a horizontally arranged adjusting screw is threadedly connected in each adjusting hole, and the threaded end of the adjusting screw abuts against one side of the pad 3. That is, by turning the adjusting screw, the length of the adjusting screw abutting against the pad 3 can be adjusted, thereby adjusting the distance between the pad 3 and the connecting plate 1, thereby adjusting the position of the pad 3 on the intermediate body 2, and the structural design is more reasonable. Preferably, a scale is provided on the connecting plate 1 and on the edge of each adjusting hole. That is, when the adjusting screw is turned, the rotation angle of the adjusting screw can be obtained through the scale, thereby ensuring that the rotation angles of the two adjusting screws are consistent, ensuring the consistency of the moving distances of the two ends of the pad 3, and preventing the pad 3 from tilting during the position adjustment process, which may lead to adjustment accuracy errors.

[0028] More specifically, a pendulum hole 41 is formed through the center of the front plate 4. The pendulum hole 41 is a stepped hole, and the end with a larger diameter of the pendulum hole 41 is located on the side of the front plate 4 facing away from the center body 2. This creates a tapered structure near the end of the pendulum hole 41 near the center body 2. This prevents the front plate 4 from detaching from the pendulum bolt 42 when the front plate 4 is subsequently mounted on the center body 2 via the pendulum bolt 42. Furthermore, the larger end of the pendulum hole 41 is bowl-shaped, with the pendulum bolt 42 mounted therein. Furthermore, the edge at the junction of the larger and smaller ends of the pendulum bolt 42 is arc-shaped and fits snugly within the larger end of the pendulum hole 41. Thus, a ball joint is formed between the larger end of the pendulum bolt 42 and the larger end of the pendulum hole 41. This facilitates pendulum movement of the front plate 4 about the pendulum bolt 42, increases the contact area of ​​the pendulum structure, improves pendulum stability, prevents wear, and extends service life. In addition, the small head end of the yaw bolt 42 is threadedly connected to the middle body 2, that is, the yaw bolt 42 is fixedly connected to the middle body 2, that is, the yaw bolt 42 can not only meet the yaw requirement of the front splint 4, but also realize the installation of the front splint 4 on the middle body 2.

[0029] More specifically, the upper end of the front splint 4 is also threadedly connected to an adjustment rod 43, one end of which is against one side of the middle body 2. That is, by rotating the adjustment rod 43, the length of the front splint 4 can be extended toward one end of the middle body 2, thereby adjusting the distance between the upper end of the front splint 4 and the middle body 2, adjusting the swing angle of the front splint 4, and making the lower end of the front splint 4 close to or away from the middle body 2 to meet the requirements of clamping or loosening the bending tool. In addition, the other end of the adjustment rod 43 extends outside the front splint 4. At the same time, a rotating handle 431 is installed on the end of the adjustment rod 43 extending outside the front splint 4. That is, the end of the adjustment rod 43 facing away from the middle body 2 extends outside the front splint 4 to provide a mounting position for the rotating handle 431. At the same time, the operator can rotate the adjustment rod 43 by rotating the handle 431 to control the swing angle of the front splint 4, making the operation more convenient. Preferably, a reinforcement hole 21 is provided on the side wall of the intermediate body 2 at a position where the end of the adjusting rod 43 abuts, and a reinforcement block 211 is provided in the reinforcement hole 21. One end of the adjusting rod 43 abuts against the reinforcement block 211, so that the contact portion between the intermediate body 2 and the adjusting rod 43 is a reinforcement block 211, thereby avoiding the problem that the adjusting rod 43 directly contacts the intermediate body 2 and easily causes the intermediate body 2 to need to be replaced as a whole after wear. At the same time, by selecting a wear-resistant material as the material of the reinforcement block 211, the service life of the intermediate plate can be extended.

[0030] More specifically, avoidance holes are respectively formed on the front splint 4 and on both sides of the deflection hole 41. At this time, connecting holes and through holes corresponding to the avoidance holes are formed on the rear splint 5 and the intermediate body 2. Moreover, a locking bolt 13 is passed through the through hole and is threadedly connected to the connecting hole. That is, the passing locking bolt 13 realizes the connection between the intermediate body 2 and the rear splint 5. By turning the locking bolt 13, the distance between the rear splint 5 and the intermediate body 2 can be adjusted to meet the use requirements of the rear splint 5 to clamp or release the bending tool. In addition, when the locking bolt 13 is installed in the connecting hole and the through hole, the large end of the locking bolt 13 corresponds to the avoidance hole. That is, when the operator needs to adjust the rear splint 5 using the locking bolt 13, the operator only needs to adjust it on the side where the front splint 4 is provided, that is, the adjustment operation position of the rear splint 5 is consistent with the adjustment operation position of the front splint 4, and the front splint 4 and the rear splint 5 can be adjusted without the operator moving, which makes the structural design more reasonable.

[0031] More specifically, reset holes 51 are provided on the front splint 4 and on both sides of the deflection hole 41, and on the rear splint 5 and beside the connecting hole. Preferably, the reset hole 51 is located below the deflection hole 41, and the reset hole 51 and the connecting hole are at the same height. At this time, a support column 52 is provided in the reset hole 51. At the same time, the support column 52 is fixedly connected to one side of the middle body 2 after passing through the reset hole 51, and a reset spring 53 is provided outside the support column 52 and between the front splint 4 and the middle body 2, and between the rear splint 5 and the middle body 2. That is, the support column 52 provides a set basis for the reset spring 53, thereby ensuring the stability of the reset spring 53. When the length of the adjusting rod 43 against the middle body 2 is adjusted to a small size, the deflected front splint 4 can be reset by the corresponding reset spring 53, thereby achieving the release of the bending tool. Similarly, the rear splint 5 can also separate the rear splint 5 from the middle body 2 through the reset spring 53, thereby achieving the same release of the bending tool.

[0032] More specifically, a first embedding groove 44 is provided at the lower end of the front splint 4 and the rear splint 5 and on one side close to the middle main body 2. At the same time, a limiting clip 45 is provided in the first embedding groove 44, and one side of the limiting clip 45 extends out of the first embedding groove 44. That is, when the bending tool is installed on the middle plate, the limiting groove on the bending tool can cooperate with the limiting clip 45 to clamp the bending tool, thereby preventing the relative movement of the bending tool and the middle plate from causing insufficient bending accuracy.

[0033] In addition, a second slot 46 is provided at the lower end of each of the front and rear plates 4, 5, near the central body 2. The second slot 46 is positioned above the first slot 44. Bosses are provided at both ends of the second slot 46, with the ends of the bosses recessed within the second slot 46. An auxiliary spring 47 is also provided within the second slot 46, with its ends mounted on two bosses, ensuring that the auxiliary spring 47 is stably mounted within the second slot 46 via the bosses. In addition, one side of the auxiliary spring 47 is arranged to protrude outside the second groove 46, so that when the bending tool is subsequently installed between the front clamp 4 and the middle body 2 and between the middle body 2 and the rear clamp 5, the end of the bending tool can be pressed by the side of the auxiliary spring 47 protruding outside the second groove 46 in the initial state, which provides convenience for clamping the bending tool. In addition, since the auxiliary spring 47 itself can adjust the distance extending outside the second groove 46 through deformation, it can not only meet the temporary fixation requirement of the bending tool before clamping, but also can completely retract to the outside of the second groove 46 through its own deformation after the bending tool is clamped, thereby meeting the stable installation requirement of the bending tool.

[0034] Figure 3 This is a schematic diagram of the installation of a rotating shaft according to a preferred embodiment of the present invention; Figure 4A structural diagram of a rotating shaft according to a preferred embodiment of the present invention; Figure 5 FIG. 1 is a schematic diagram of a slider according to a preferred embodiment of the present invention. Figure 1As shown in Figure 5 , the lifting and restoring member 6 includes, in addition to the aforementioned telescopic slot 61, slider 62, and compression spring 63, a rotating shaft 64 and a guide sleeve 65. An auxiliary adjustment hole 14 is provided on the connecting plate 1, located above and parallel to the slot 11, extending through both ends of the connecting plate 1. The auxiliary adjustment hole 14 is configured as a stepped hole, with a larger diameter at one end and a smaller diameter at the other. Furthermore, the larger end of the auxiliary adjustment hole 14 communicates with the telescopic slot 61, enabling the subsequent structure within the auxiliary adjustment hole 14 to act on the slider 62 within the telescopic slot 61. The first engaging hole 642 of the second intermediate plate can be inserted into the second intermediate plate so that the second intermediate plate can be adjusted to the desired position. Furthermore, one end of the rotating shaft 64, which is provided with a first mating hole 642, is threadedly connected to the small end of the auxiliary adjustment hole 14. That is, when the operator twists the rotating shaft 64 through the first mating hole 642, the rotating shaft 64 can rotate in the circumferential direction. The threaded rotating shaft 64 can also achieve self-locking, preventing the operator from automatically reversing the rotation after releasing the rotating shaft 64, thereby preventing the adjustment from failing. This ensures the reliability of the adjustment process. It is worth noting that when the rotating shaft 64 is rotated, since the rotating shaft 64 is threadedly connected to the small end of the auxiliary adjustment hole 14, the rotating shaft 64 will move axially within the auxiliary adjustment hole 14. At this time, the guide sleeve 65 can both meet the rotation requirements of the rotating shaft 64 and adapt to the axial movement requirements of the rotating shaft 64 by sliding the guide sleeve 65 within the large end of the auxiliary adjustment hole 14. At the same time, the guide sleeve 65 can also provide support for the end of the rotating shaft 64 provided with the first mating block 641, thereby maintaining the stability of the rotation of the rotating shaft 64.At the same time, the rotating shaft 64 is located on the side wall inside the large end of the auxiliary adjustment hole 14 and is provided with a lever 643 extending into the telescopic slide 61 along its radial direction, and a strip-shaped fine-tuning hole 621 is opened on the slider 62 along the axial direction of the rotating shaft 64, so that the fine-tuning hole 621 has a certain length in the axial direction of the rotating shaft 64. At the same time, the lever 643 is inserted into the fine-tuning hole 621, that is, when the rotating shaft 64 rotates, the rotating shaft 64 drives the lever 643 to rotate. At this time, the lever 643 rotates in the circumferential direction of the rotating shaft 64 and moves in the axial direction of the rotating shaft 64. However, since the fine-tuning hole 621 has a certain length in the axial direction of the rotating shaft 64, it can provide a way for the lever 643 to move in the axial direction of the rotating shaft 64. The cam 64 is rotated in the circumferential direction of the shaft 64 to move the slider 62 in the radial direction of the shaft 64. The slider 62 is restricted by the telescopic slot 61, so that the slider 62 can be raised and lowered in the telescopic slot 61, thereby adjusting the length of the small head end of the slider 62 extending into the slot 11, thereby realizing the adjustment of the installation position of the connecting plate 1 on the bending machine head. At this time, the compression spring 63 serves as an auxiliary structure when the slider 62 extends into the slot 11. There is no need for the operator to manually support the bottom of the middle plate or the bottom of the bending tool for lifting. It is only necessary to twist the shaft 64 with a wrench, etc., which is more convenient to use.

[0035] More specifically, a plurality of guide grooves 141 are formed on the inner wall of the large end of the auxiliary adjustment hole 14 and along its axial direction. Simultaneously, a plurality of protruding guide bars 651 are provided on the outer wall of the guide sleeve 65 along the axial direction of the rotating shaft 64. When the guide sleeve 65 is sleeved on the rotating shaft 64 and installed in the large end of the auxiliary adjustment hole 14, a guide bar 651 slides in a guide groove 141. The interaction between the guide bars 651 and the guide groove 141 provides a stable guide foundation for the guide sleeve 65 to slide axially along the rotating shaft 64 in the auxiliary adjustment hole 14, thereby ensuring the stability of the rotating shaft 64 during operation. Preferably, the guide sleeve 65 is a nylon sleeve, which has better wear resistance, is lighter in weight, and has a longer service life. In addition, the cross-section of the first mating block 641 is set to a regular hexagonal structure. Similarly, the first mating hole 642 corresponding to the first mating block 641 is a hexagonal hole. The first mating hole 642 and the first mating block 641 can achieve circumferential limitation after being socketed with each other, so that the two connected rotating shafts 64 will not slip when rotating synchronously. In addition, the operator can use an hexagonal wrench to twist the rotating shaft 64, which is more convenient to operate.

[0036] The intermediate plate of the bending machine provided in this embodiment includes a connecting plate 1, an intermediate body 2, a pad 3, a front splint 4, a rear splint 5 and a lifting and resetting member 6, and the lifting and resetting member 6 includes a telescopic slide 61, a slider 62 and a compression spring 63; a telescopic slide 61 whose lower end is connected to the slot 11 is provided on the connecting plate 1 and above the slot 11, and a slider 62 is provided in the telescopic slide 61, and a compression spring 63 is provided between the slider 62 and the upper end of the telescopic slide 61, and the lower end of the slider 62 is selectively extended into the slot 11, When the connecting strip on the bending machine head is inserted into the slot 11, the slider 62 is away from the end of the telescopic spring and rests on the connecting strip. When the position of the pad 3 is adjusted to reduce the distance between the bending machine head and the middle body 2, the slider 62 can be pushed toward the slot 11 by the compression spring 63, thereby pushing the connecting plate 1 up relative to the bending machine head in the opposite direction, thereby realizing automatic fine-tuning of the middle plate on the bending machine head. There is no need for the operator to manually support the bottom of the middle plate or the bottom of the bending tool to lift it, which makes the operation more convenient and the operation process safer.

[0037] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A middle plate of a bending machine, comprising a connecting plate, a middle body, a pad, a front splint and a rear splint, wherein one side of the upper end of the middle body is fixed to one side of the lower end of the connecting plate, one side of the upper end of the connecting plate is provided with a card slot and is connected to the connecting card strip on the bending machine head, the pad is arranged on the top surface of the upper end of the middle body and rests on the bottom surface of the bending machine head, the bottom surface of the pad and the top surface of the middle body are inclined surfaces that fit each other, the front splint and the rear splint are respectively arranged on both sides of the lower end of the middle body, and are characterized in that A telescopic slide is provided on the connecting plate and above the card slot in the vertical direction, the lower end of the telescopic slide is connected to the card slot and a constriction is formed at the connection between the two, a slider arranged in a "T" shape is slidably provided in the telescopic slide, the small head end of the slider selectively extends into the card slot from the constriction, a compression spring is provided between the large head end of the slider and the upper end of the telescopic slide, the telescopic slide, the slider and the compression spring constitute a lifting and resetting member, and when the connecting card strip is inserted into the card slot, the small head end of the slider abuts against the top surface of the connecting card strip; The lifting and resetting component also includes a rotating shaft, and an auxiliary adjustment hole is provided on the connecting plate and above the card slot, and passes through both ends of the connecting plate. The auxiliary adjustment hole is a stepped hole, and the large head end of the auxiliary adjustment hole is connected to the telescopic slide slot, and the small head end of the auxiliary adjustment hole is a threaded hole. A guide sleeve is slidably provided in the large head end of the auxiliary adjustment hole along its axial direction. One end of the rotating shaft is provided with a first matching block and is rotatably installed in the guide sleeve. A first matching hole corresponding to the first matching block is provided on the end surface of the other end of the rotating shaft. The distance between the end surface of the first matching block facing away from the end of the rotating shaft and the end surface of the rotating shaft provided with the first matching hole is consistent with the length of the connecting plate, and one end of the rotating shaft provided with the first matching hole is threadedly connected to the small head end of the auxiliary adjustment hole. At the same time, the rotating shaft is located on the side wall inside the large head end of the auxiliary adjustment hole and a shift rod extending into the telescopic slide slot is provided along its radial direction. A strip-shaped fine-adjustment hole is provided on the slider along the axial direction of the rotating shaft, and the shift rod is inserted into the fine-adjustment hole.

2. The intermediate plate of the bending machine according to claim 1, characterized in that: A locking hole and two adjusting holes are provided at intervals in the middle of the connecting plate. The locking hole and the adjusting hole are located in the same horizontal plane, and the two adjusting holes are symmetrically arranged about the locking hole. The locking hole is a strip hole arranged in the vertical direction. At the same time, a horizontally arranged locking bolt is passed through the locking hole, and the threaded end of the locking bolt is threadedly connected to the pad. A horizontally arranged adjusting screw is threadedly connected in each adjusting hole, and the threaded end of the adjusting screw rests against one side of the pad.

3. The intermediate plate of the bending machine according to claim 1, characterized in that: A pendulum hole is provided through the center of the front splint, and the pendulum hole is a stepped hole. The end with a larger aperture of the pendulum hole is located on the side of the front splint away from the middle body, and the end with a larger aperture of the pendulum hole is arranged in a bowl shape. A pendulum bolt is installed in the pendulum hole, and the edge of the connection between the large head end and the small head end of the pendulum bolt is arranged in an arc shape and fits into the end with a larger aperture of the pendulum hole, and the small head end of the pendulum bolt is threadedly connected to the middle body.

4. The intermediate plate of the bending machine according to claim 1, characterized in that: An adjusting rod is threadedly connected to the upper end of the front splint, one end of the adjusting rod is against one side of the middle body, and the other end of the adjusting rod extends out of the front splint. At the same time, a rotating handle is installed on the end of the adjusting rod extending out of the front splint.

5. The intermediate plate of the bending machine according to claim 3, characterized in that: Avoidance holes are provided on the front splint and on both sides of the deflection hole, and connecting holes and through holes corresponding to the avoidance holes are provided on the rear splint and the intermediate body. A locking bolt passes through the through hole and is threadedly connected to the connecting hole.

6. The intermediate plate of the bending machine according to claim 5, characterized in that: Reset holes are provided on the front splint and on both sides of the deflection hole, and on the rear splint and beside the connecting hole. Support columns are provided in the reset holes. After the support columns are passed through the reset holes, they are fixedly connected to one side of the middle body. Reset springs are provided outside the support columns and between the front splint and the middle body, and between the rear splint and the middle body.

7. The intermediate plate of the bending machine according to claim 1, characterized in that: A first embedding groove is provided at the lower end of the front splint and the rear splint and on one side close to the middle body. A limit clip is provided in the first embedding groove, and one side of the limit clip extends out of the first embedding groove.

8. The intermediate plate of the bending machine according to claim 7, characterized in that: A second embedding groove is provided at the lower end of the front splint and the rear splint and on one side close to the middle body. The second embedding groove is located above the first embedding groove. Bosses are provided at both ends of the second embedding groove. At the same time, an auxiliary spring is provided in the second embedding groove. The two ends of the auxiliary spring are respectively installed on the two bosses, and one side of the auxiliary spring protrudes outside the second embedding groove.

9. The intermediate plate of the bending machine according to claim 1, characterized in that: A plurality of guide grooves are provided on the inner wall of the large end of the auxiliary adjustment hole and along its axial direction, and a plurality of protruding guide strips are provided on the outer wall of the guide sleeve along the axial direction of the rotating shaft, and one of the guide strips is slidably arranged in one of the guide grooves.

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