Automatic adjustable lower die structure

Abstract

The utility model discloses an automatic adjustable lower die structure, which relates to the technical field of machine tool die adjustment and comprises a lower die support, and two groups of supporting seats are mounted on the lower die support. The two sets of lower dies are arranged in parallel, an adjusting groove is formed in the lower die support, and a brace is installed in the adjusting groove. Two groups of supporting seats are mounted at the end part of the lower die support, and rotating gears are mounted on the supporting seats; a tooth-shaped strip is arranged at the bottom of the pull strip, and the tooth-shaped strip is meshed with the rotating gear; a driving motor is mounted outside the lower die support and is suitable for driving the two groups of rotating gears to rotate; and the two groups of supporting seats which are arranged in parallel are suitable for moving towards or away from each other along with the transverse movement of the brace. According to the utility model, the technical problem of deflection lag caused by overlong length due to direct traction of the supporting structure by the end part of the lower die support in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool mold adjustment technology, specifically an automatically adjustable lower mold structure. Background Technology

[0002] A bending machine die is a tool used by a bending machine to shape and process sheet metal. This tool is composed of various parts, and different dies are composed of different parts. It mainly achieves the shaping of an object by changing the physical state of the material being formed. It is a tool used to shape a blank into a part with a specific shape and size under the pressure of a bending machine.

[0003] The function of the upper die is to apply pressure, causing the metal sheet to bend and deform. During the operation of the bending machine, the metal sheet is placed on the bottom die (i.e., the lower die), and then the upper die presses down, causing the sheet to bend along the shape of the lower die through pressure.

[0004] The function of the lower die is to guide the sheet metal downwards to form a bend. When the sheet metal is placed on the lower die, the upper die applies pressure, causing the sheet metal to bend along the shape of the lower die. The precision and shape of the lower die directly affect the bending angle and shape; therefore, a high-quality lower die ensures the accuracy and consistency of the bending.

[0005] Compared to the upper die, the lower die requires more frequent adjustments. Reference CN202211692718.2 describes an automatically adjustable open-end roller lower die, which uses a motor-driven offset slide to adjust the support spacing of the split-shaft side plates. Because the adjustment method is end-traction, for long, strip-shaped lower die support structures, there is a problem where one end is adjusted while the other end remains unrotated. This can easily lead to different results in the same batch of bending operations.

[0006] To address these issues, we provide an automatically adjustable lower mold structure. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatically adjustable lower mold structure. By using a long strip of pull rod and a gear rack, it overcomes the technical problem of deflection lag caused by the excessive length of the direct traction lower mold support structure.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an automatically adjustable lower mold structure, including a lower mold support, on which two sets of support seats are installed;

[0009] The two sets of support seats are provided in parallel, and an adjustment groove is provided in the lower mold support seat, and a tie rod is installed in the adjustment groove;

[0010] Two sets of support seats are installed at the end of the lower mold support, and rotating gears are installed on the support seats; the bottom of the pull bar is provided with a toothed strip, which meshes with the rotating gear;

[0011] A drive motor is installed on the outside of the lower mold support, and the drive motor is adapted to drive two sets of rotating gears to rotate.

[0012] The two sets of support seats are adapted to move toward or away from each other as the tie rod moves laterally.

[0013] In a further technical solution, the pull bar is provided with oblique grooves, and each set of pull bars is provided with at least two sets of oblique grooves;

[0014] The bottom of the support extends into the adjustment groove and is fitted with a connecting strip, which is adapted to slide within the inclined groove.

[0015] In a further technical solution, the vertical cross-section of the inclined groove is a square groove; the angle between the inclined groove and the length direction of the pull bar is 12-15°.

[0016] In a further technical solution, the support base is fixedly connected to the lower mold support base, a steering gear is installed at the output end of the drive motor, and a transmission shaft is installed on both sides of the steering gear.

[0017] The shaft of the drive shaft is installed in the support base, and connecting bearings are installed at both ends of the support base. The inner ring of the connecting bearing is fixedly connected to the drive shaft, and the outer ring is fixedly connected to the support base.

[0018] The drive shaft located inside the support is connected to the rotating gear.

[0019] In a further technical solution, the support base is provided with a built-in groove, which is suitable for the bottom of the rotating gear to pass through;

[0020] The top height of the pull bar is lower than the top height of the inner wall of the support base.

[0021] In a further technical solution, the steering gear includes a fixed housing, a first bevel gear, and a second bevel gear. The first bevel gear is connected to the output end of the drive motor. The second bevel gear is provided in two sets and is respectively connected to the shaft end of the transmission shaft, and both are located inside the fixed housing. A second connecting bearing is installed between the transmission shaft and the fixed housing.

[0022] The drive motor is adapted to drive the rotation of two sets of electric transmission shafts.

[0023] In a further technical solution, a guide groove is provided inside the lower mold support, and the guide grooves are arranged in pairs on both sides of the horizontal axis; a T-shaped guide block is installed inside the support seat, and its end is installed in the guide groove, and the T-shaped guide block is adapted to slide in the guide groove.

[0024] In a further technical solution, the groove of the inclined strip is shaped like an inverted figure eight, extending from one end of the rotating gear meshing point to the other.

[0025] In a further technical solution, shaft blocks are installed on the opposing sides of the two sets of support seats.

[0026] Compared with existing technologies, this automatically adjustable lower mold structure has the following advantages:

[0027] This invention uses a drive motor to rotate a rotating gear, which in turn meshes with a toothed strip to move the pull bar within the lower mold support. Then, the inclined groove at the top of the pull bar drives the connecting strip at the bottom of the support base to slide along the inclined groove, thereby allowing the two sets of support bases to move closer or further apart horizontally, thus adjusting the distance between the support bases within a set range.

[0028] This invention utilizes the transmission effect of bevel gears to achieve a connection and transmission effect from the drive motor, bevel gear one, bevel gear two, transmission shaft, rotating gear, and toothed rack. Through the transmission connection structure in this embodiment, a stable transmission effect can be achieved.

[0029] This invention achieves stable guidance by installing T-shaped guide blocks in the guide groove, ensuring the certainty of the movement direction of the support seat. Attached Figure Description

[0030] Figure 1 This is a top view of the automatically adjustable lower mold structure of this utility model;

[0031] Figure 2 This is a top-section view of the automatically adjustable lower mold structure of this utility model;

[0032] Figure 3 This is a side view of the present invention located on the support base;

[0033] Figure 4 This is a schematic diagram of the structure of the pull bar of this utility model;

[0034] Figure 5 This is a schematic diagram of the two sets of pull strips of this utility model.

[0035] Figure 6 This is a cross-sectional view of the support base of this utility model;

[0036] Figure 7 for Figure 6Enlarged view of point A;

[0037] Figure 8 This is a schematic horizontal sectional view of the steering gear in this utility model;

[0038] Figure 9 This is a side cross-sectional view of the present invention located on the T-shaped guide block;

[0039] In the picture:

[0040] 1. Lower mold support; 2. Shaft block; 3. Tie bar; 4. Support seat; 5. Rotary gear; 6. Toothed rack; 7. Drive motor; 8. Steering gear; 9. Support seat; 11. Guide groove; 12. T-shaped guide block; 31. Inclined groove; 41. Connecting bearing one; 42. Internal groove; 81. Drive shaft; 82. Connecting bearing two; 83. Fixed shell; 84. Bevel gear one; 85. Bevel gear two; 91. Connecting bar. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Example 1

[0043] Please see Figure 1-5 This invention provides a technical solution, which includes an automatically adjustable lower mold structure, including a lower mold support 1, two sets of support seats 9 installed on the lower mold support 1, and shaft blocks 2 installed on the support seats 9; the shaft blocks 2 are arranged in two sets and are parallel, and an adjustment groove is opened in the lower mold support 1, and a pull bar 3 is installed in the adjustment groove; the shaft blocks 2 move relative to or away from the support seats to achieve the mold bearing effect.

[0044] like Figure 3 As shown, two sets of support seats 4 are installed at the end of the lower mold support 1, and rotating gears 5 are installed on the support seats 4; a toothed strip 6 is provided at the bottom of the pull rod 3, and the toothed strip 6 meshes with the rotating gear 5; a drive motor 7 is installed on the outside of the lower mold support 1, and the drive motor 7 is adapted to drive the two sets of rotating gears 5 to rotate; the drive motor drives the rotating gears to rotate, and the rotating gears mesh with the toothed strip to realize the movement of the pull rod within the lower mold support. Finally, the support seat is driven by the inclined groove at the top of the pull rod. Figure 3 The horizontal movement of the middle part moves closer or further away, thereby achieving an effective connection of the lower mold support.

[0045] The two sets of parallel shaft blocks 2 are adapted to move towards or away from each other as the pull bar 3 moves laterally.

[0046] like Figure 4 As shown, inclined grooves 31 are provided on the pull bar 3, and each set of pull bars 3 has at least two sets of inclined grooves 31; this embodiment uses three sets of inclined grooves 31. In this embodiment, the drive motor drives two sets of rotating gears to rotate, which can be achieved by using a structure such as a dual-axis motor.

[0047] The bottom of the shaft block 2 extends into the adjusting groove and is fitted with a connecting strip 91, which is adapted to slide within the inclined groove 31. The length of the connecting strip 91 is not shown in the figure, but it can be limited to 1 / 4 of the length of the inclined groove to ensure support. The vertical cross-section of the inclined groove 31 is a square groove. Figure 5 As shown, from one end of the rotating gear 5 meshing to the other end, the slotting direction of the inclined groove 31 is an inverted V-shape. The angle between the inclined groove 31 on one side and the length direction of the pull bar 3 is 12-15°. By sliding on the inclined groove, the two sets of support seats can move closer or further apart. Furthermore, by controlling the working time of the drive motor, the pull bar is kept inside the lower mold support 1 to prevent the toothed strip from disengaging from the rotating gear.

[0048] Example 2

[0049] like Figure 6-8 As shown, another embodiment of this utility model is presented. Based on embodiment 1, to achieve a stable transmission effect, the support base 4 is fixedly connected to the lower mold support 1. A steering gear 8 is installed at the output end of the drive motor 7, and drive shafts 81 are installed on both sides of the steering gear 8. The shaft of the drive shaft 81 is installed inside the support base 4, and connecting bearings 41 are installed at both ends connected to the support base 4. The inner ring of the connecting bearing 41 is fixedly connected to the drive shaft 81, and the outer ring is fixedly connected to the support base 4. The drive shaft 81 located inside the support base 4 is connected to the rotating gear 5. A built-in groove 42 is provided inside the support base 4, suitable for the bottom of the rotating gear 5 to pass through. The top height of the pull bar 3 is lower than the top height of the inner wall of the support base 4.

[0050] like Figure 7 and Figure 8As shown, the steering gear 8 includes a fixed housing 83, a first bevel gear 84, and a second bevel gear 85. The first bevel gear 84 is connected to the output end of the drive motor 7. Two sets of the second bevel gear 85 are provided and are respectively connected to the shaft ends of the transmission shaft 81, both located within the fixed housing 83. A second connecting bearing 82 is installed between the transmission shaft 81 and the fixed housing 83. The drive motor 7 is adapted to drive the two sets of transmission shafts 81 to rotate. The drive motor can be a geared motor. Through the transmission effect of the bevel gears, a connected transmission effect is achieved from the drive motor, the first bevel gear, the second bevel gear, the transmission shaft, the rotating gear, and the rack. Through the transmission connection structure in this embodiment, a stable transmission effect can be achieved.

[0051] Example 3

[0052] like Figure 9 As shown, another embodiment of the present invention is provided. Based on embodiment 1, the definiteness of the moving direction of the support seat is ensured. A guide groove 11 is provided in the support seat 9. The guide grooves 11 are arranged in pairs on both sides of the horizontal axis. A T-shaped guide block 12 is installed at the bottom of the shaft block 2, and the end is installed in the guide groove 11. The T-shaped guide block 12 is adapted to slide in the guide groove 11.

[0053] Working method: When needed, the drive motor drives the steering gear to rotate two sets of transmission shafts, thereby realizing the rotation of the rotating gears on the transmission shafts. The rotating gears drive the toothed strip under the tie bar, realizing the movement of the inclined groove on the tie bar. The connecting strip installed under the support seat realizes the passive sliding effect; thus realizing the relative or opposite movement of the two sets of support seats.

[0054] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. An automatically adjustable lower mold structure, characterized in that, Includes a lower mold support (1), on which two sets of support seats (9) are installed; The two sets of support seats (9) are arranged in parallel, and an adjustment groove is provided in the lower mold support (1), and a tie rod (3) is installed in the adjustment groove. Two sets of support seats (4) are installed at the end of the lower mold support (1), and a rotating gear (5) is installed on the support seat (4); a toothed strip (6) is provided at the bottom of the pull bar (3), and the toothed strip (6) meshes with the rotating gear (5); A drive motor (7) is installed on the outside of the lower mold support (1), and the drive motor (7) is adapted to drive two sets of rotating gears (5) to rotate. The two sets of support seats (9) are adapted to move toward or away from each other as the tie bar (3) moves laterally.

2. The automatically adjustable lower mold structure according to claim 1, characterized in that, The pull bar (3) is provided with a diagonal groove (31), and each set of pull bars (3) is provided with at least two sets of diagonal grooves (31); The bottom of the support (9) extends into the adjustment groove and is fitted with a connecting strip (91), which is adapted to slide within the inclined groove (31).

3. The automatically adjustable lower mold structure according to claim 2, characterized in that, The vertical cross-section of the inclined groove (31) is a square groove; the angle between the inclined groove (31) and the length direction of the tie bar (3) is 12-15°.

4. The automatically adjustable lower mold structure according to claim 1, characterized in that, The support base (4) is fixedly connected to the lower mold support (1), and the output end of the drive motor (7) is equipped with a steering gear (8), and the two sides of the steering gear (8) are equipped with transmission shafts (81). The shaft of the drive shaft (81) is installed in the support seat (4), and the two ends connected to the support seat (4) are equipped with connecting bearings (41). The inner ring of the connecting bearing (41) is fixedly connected to the drive shaft (81), and the outer ring is fixedly connected to the support seat (4). The drive shaft (81) located in the support (4) is connected to the rotating gear (5).

5. The automatically adjustable lower mold structure according to claim 4, characterized in that, The support base (4) is provided with a built-in groove (42) and is suitable for the bottom of the rotating gear (5) to pass through; The top height of the pull bar (3) is lower than the top height of the inner wall of the support base (4).

6. The automatically adjustable lower mold structure according to claim 5, characterized in that, The steering gear (8) includes a fixed housing (83), a first bevel gear (84), and a second bevel gear (85). The first bevel gear (84) is connected to the output end of the drive motor (7). The second bevel gear (85) is provided in two sets and is respectively connected to the shaft end of the transmission shaft (81), and both are located inside the fixed housing (83). A second connecting bearing (82) is installed between the transmission shaft (81) and the fixed housing (83). The drive motor (7) is adapted to drive the two sets of electric transmission shafts (81) to rotate.

7. The automatically adjustable lower mold structure according to claim 3, characterized in that, The lower mold support (1) is provided with a guide groove (11), and the guide grooves (11) are arranged in pairs on both sides of the horizontal axis; the support seat (9) is provided with a T-shaped guide block (12), and the end is installed in the guide groove (11), and the T-shaped guide block (12) is suitable for sliding in the guide groove (11).

8. The automatically adjustable lower mold structure according to claim 3, characterized in that, From one end of the rotating gear (5) at the meshing point to the other end, the groove direction of the inclined groove (31) is an inverted V-shape.

9. The automatically adjustable lower mold structure according to claim 1, characterized in that, A shaft block (2) is mounted on the support seat (9).

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