Landing leg supporting foot and forming device

Abstract

The supporting leg is a square tube, a contraction opening is machined in the lower portion of the square tube and used for being connected with a rotating shaft, the forming device of the supporting leg comprises a first punch forming device and a second punch forming device, the first punch forming device positions the supporting leg through a first inner mold, and the second punch forming device positions the supporting leg through a second inner mold. Four wrap angles of a square tube of the supporting leg are stamped into long grooves and transition fillets through a first inclined stamping die, and the two side faces of the supporting leg are formed through the second stamping forming device through the interaction of a second horizontal stamping die and a second inner die. According to the device, through two-time punch forming, closing-up of the lower portion of the supporting leg is achieved, the forming precision is high, welding is convenient, cost is saved, a quantitative production process is provided for batch production of the supporting leg, and the formed closing-up position is consistent in specification and attractive in appearance.

Description

Technical Field

[0001] The invention relates to a supporting leg and a supporting foot and a forming device. Background Art

[0002] Semi-trailer outriggers are commonly known as outriggers. They are divided into left and right outriggers. As an indispensable part of the semi-trailer, the commonly used outriggers generally have a stroke of about 45 cm, a closed height of about 90 cm, a rated load of 28 tons, and a static load of 40 tons. Their function is to support the semi-trailer after it is separated from the front of the vehicle, but the styles and types are different. Different types have basically the same structure. They all support the semi-trailer by the up and down movement of the outriggers. The bottom of the outriggers is connected by a rotating shaft as a connecting part. When the square structure of the outriggers and the circular structure of the rotating shaft are fixed and welded, the lower part of the outriggers must be closed first. The existing process is to perform plasma cutting on the outriggers and then form them. The defects of this processing technology are mainly that the cutting edge has low precision and slow processing speed, which is not suitable for mass production. Summary of the invention

[0003] In view of the shortcomings existing in the above problems, the present invention provides a support leg, support foot and a forming device.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a support leg foot, wherein the support leg is a square tube, and a contraction opening is processed at the lower part of the square tube for connecting with a rotating shaft.

[0005] The present invention provides a forming device for a leg support foot, comprising a first stamping forming device and a second stamping forming device, wherein the first stamping forming device comprises a first lower die seat and a first upper die, a first support seat is fixed on the first lower die seat by bolts, the cross-sectional shape of the first support seat matches the shape of the support foot, a first inner die is fixed at the first lower die seat by bolts, the first inner die comprises a first inner die core, the first inner die core is located in the first support seat, the support foot is placed between the first inner die core and the first support seat, and first oblique stamping dies are symmetrically installed on both sides of the first inner die core;

[0006] The second stamping and forming device comprises a second lower die base and a second upper die. A second inner die is installed at the center of the second lower die base. The second inner die comprises a second die core. Second horizontal dies are symmetrically installed on both sides of the second inner die.

[0007] As a further improvement of the present invention, a first punching block is installed at the first upper die, and a first punching action surface is processed under the first punching block.

[0008] As a further improvement of the present invention, an inner hole is processed in the first oblique punch die, the inner hole is clamped at 45° to the horizontal plane, a spring and a first oblique punch rod are installed in the inner hole, the first oblique punch rod is positioned by the end cover, and a first oblique punch knife is processed at the lower end of the first oblique punch rod, and the shape of the first oblique punch knife matches the first oblique punch groove and transition radius of the support foot.

[0009] As a further improvement of the present invention, a first inner mold cavity is processed at the first inner mold core, and the first inner mold cavity matches the first oblique punch.

[0010] As a further improvement of the present invention, a second horizontal punch is processed on the inner side of the second horizontal punch die, and the shape of the second horizontal punch matches the second stamping forming surface of the support leg.

[0011] As a further improvement of the present invention, a second mold core is processed at the second inner mold, and the second mold core matches the second horizontal punch.

[0012] As a further improvement of the present invention, a second punching block is installed on the second upper die, and the second punching block matches the second horizontal die.

[0013] The beneficial effects of the present invention are:

[0014] The device achieves the closing of the lower part of the foot through two stamping processes, with high forming precision, convenient welding, and cost savings, providing a quantitative production process for the mass production of the foot. The specifications of the closing part after forming are consistent and the appearance is beautiful. The first forming process processes the first oblique punching groove and transition fillet at the fillet transition of the square tube of the foot, so that there is enough space for the second inner mold during the first forming process, and also solves the problem that the fillet transition cannot be stamped during the second stamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a first front view of a leg support foot and a forming device of the present invention;

[0016] Figure 2 for Figure 1 Side view of

[0017] Figure 3 It is a second front view of a support leg and a forming device of the present invention;

[0018] Figure 4 for Figure 1 A magnified view of the middle A area;

[0019] Figure 5 for Figure 3 Enlarged view of the B area;

[0020] Figure 6 is a cross-sectional view of the side punch of component 121;

[0021] Figure 7 is a cross-sectional view of the punch seat on the side of component 91;

[0022] Figure 8 This is the parts drawing of the component 7 leg after the first molding;

[0023] Fig. 9 This is the part drawing of the support leg of component 7 after the second molding;

[0024] Fig.10 This is the parts drawing of the component 7 leg after final formation.

[0025] In the figure: 1. first lower die seat; 2. first support seat; 3. first inner die; 31. first inner die core; 311. first inner die cavity; 4. first oblique punch; 41. first oblique punch rod; 411. first oblique punch knife; 412. spring; 42. inner hole; 43. end cover; 5. first stamping block; 51. first stamping action surface; 6. first upper die; 7. support foot; 71. first oblique punch groove; 72. second stamping forming surface; 73. transition fillet; 8. second lower die seat; 9. second horizontal punch; 91. second horizontal punch knife; 10. second stamping block; 11. second upper die; 12. second inner die; 121. second core. DETAILED DESCRIPTION

[0026] like Figure 8-10 As shown, a support leg foot described in the present invention is a square tube, and a contraction opening is processed at the lower part of the square tube for connection with the rotating shaft.

[0027] like Figure 1-7 As shown, a forming device for a leg and foot described in the present invention includes a first stamping forming device and a second stamping forming device, wherein the first stamping forming device includes a first lower die seat 1 and a first upper die 6, a first support seat 2 is fixed on the first lower die seat 1 by bolts, a cross-sectional shape of the first support seat 2 matches the shape of the support foot 7, a first inner die 3 is fixed at the first lower die seat 1 by bolts, the first inner die 3 includes a first inner die core 31, the first inner die core 31 is located in the first support seat 2, the support foot 7 is placed between the first inner die core 3 and the first support seat 2, and a first oblique die 4 is symmetrically installed on both sides of the first inner die core; the second stamping forming device includes a second lower die seat 8 and a second upper die 11, a second inner die 12 is installed at the center of the second lower die seat 8, the second inner die 12 includes a second die core 121, and second horizontal dies 9 are symmetrically installed on both sides of the second inner die 12.

[0028] A first punch block 5 is installed at the first upper die 6, and a first punching action surface 51 is processed under the first punch block 5. An inner hole 42 is processed in the first oblique punch die 4, and the inner hole 42 is a 45° clamp with the horizontal plane. A spring 412 and a first oblique punch rod 41 are installed in the inner hole 42, and the first oblique punch rod 41 is positioned by an end cover 43. A first oblique punch knife 411 is processed at the lower end of the first oblique punch rod 41, and the shape of the first oblique punch knife 411 matches the first oblique punch groove 71 and the transition 73 radii of the support foot 7. A first inner mold cavity 311 is processed at the first inner mold core 31, and the first inner mold cavity 311 matches the first oblique punch knife 411.

[0029] A second horizontal punch 91 is processed on the inner side of the second horizontal die 9, and the shape of the second horizontal punch 91 matches the second stamping forming surface 72 of the support leg 7. A second mold core 121 is processed at the second inner mold 12, and the second mold core 121 matches the second horizontal punch 91. A second punch block 10 is installed on the second upper mold 11, and the second punch block 10 matches the second horizontal die 9.

[0030] The device achieves the closing of the lower part of the foot through two stamping processes, with high forming precision, convenient welding, and cost savings, providing a quantitative production process for the mass production of the foot. The specifications of the closing part after forming are consistent and the appearance is beautiful. The first forming process processes the first oblique punching groove and transition fillet at the fillet transition of the square tube of the foot, so that there is enough space for the second inner mold during the first forming process, and also solves the problem that the fillet transition cannot be stamped during the second stamping process.

[0031] In order to facilitate the understanding of the present invention, the following description is given in conjunction with the accompanying drawings during specific use;

[0032] like Figure 8-10 The legs shown in the figure have the lower part of the legs closed and shaped like Fig.10 As shown, the supporting function is finally achieved by welding with the rotating shaft. The forming device of the supporting leg and foot of the present invention achieves the closing function through two forming steps.

[0033] When working, put the square tubular support leg between the first inner mold core and the first support seat (such as Figure 1 As shown in the figure, the first upper die moves downward, the first punching action surface contacts the upper end surface of the first oblique punch rod, the first oblique punch rod overcomes the elastic force of the spring, the first oblique punch knife interacts with the first inner die cavity to punch the corner of the square tube, and after forming, Figure 8 The first oblique punch groove and transition fillet are shown. Punching the transition fillet facilitates the bending of the upper and lower sides in the subsequent processing flow, and can also prevent stress concentration. Similarly, the other two corners are punched after the support leg is rotated 180°.

[0034] Place the support leg for the first oblique punch groove and transition radius of the corner processing on the second stamping forming device, and put the support leg on the second mold core (such as Figure 3 As shown, the second upper die drives the second punch block downward, and after interacting with the second horizontal die, the second horizontal die moves toward the center, and the second horizontal punch 91 interacts with the second die core to shear the side of the bracket. The shape after forming is as shown in FIG. Fig. 9 Finally, the upper and lower sides of the bracket are bent manually or by a robot to form a shape as shown in Fig.10 shown.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A leg support and a forming device, characterized in that: The support leg (7) is a square tube, and a contraction opening is processed at the lower part of the square tube for connecting with the rotating shaft.

2. A forming device for a leg and foot, characterized in that: The invention comprises a first stamping and forming device and a second stamping and forming device, wherein the first stamping and forming device comprises a first lower die seat (1) and a first upper die (6), a first support seat (2) is fixed to the first lower die seat (1) by bolts, the cross-sectional shape of the first support seat (2) matches the outer shape of the support leg (7), a first inner die (3) is fixed to the first lower die seat (1) by bolts, the first inner die (3) comprises a first inner die core (31), the first inner die core (31) is located in the first support seat (2), the support leg (7) is placed between the first inner die core (31) and the first support seat (2), and a first oblique stamping die (4) is symmetrically installed on both sides of the first inner die core (31); The second stamping and forming device comprises a second lower die base (8) and a second upper die (11); a second inner die (12) is installed at the center of the second lower die base (8); the second inner die (12) comprises a second die core (121); and second horizontal dies (9) are symmetrically installed on both sides of the second inner die (12).

3. A leg and foot forming device according to claim 2, characterized in that: A first punching block (5) is installed at the first upper die (6), and a first punching action surface (51) is processed on the lower side of the first punching block (5).

4. A leg and foot and forming device according to claim 2, characterized in that: An inner hole (42) is machined inside the first oblique punch die (4), and the inner hole (42) is clamped at a 45° angle with the horizontal plane. A spring (412) and a first oblique punch rod (412) are installed in the inner hole (42), and the first oblique punch rod (412) is positioned by an end cover (43). A first oblique punch knife (411) is machined at the lower end of the first oblique punch rod (412), and the shape of the first oblique punch knife (411) matches the first oblique punch groove (71) and the transition fillet (73) of the support leg (7).

5. A leg and foot and forming device according to claim 2, characterized in that: A first inner mold cavity (311) is processed at the first inner mold core (31), and the first inner mold cavity (311) matches the first oblique punch (411).

6. A leg and foot and forming device according to claim 2, characterized in that: A second horizontal punch (91) is processed on the inner side of the second horizontal punch die (9), and the shape of the second horizontal punch (91) matches the second punching and forming surface (72) of the support leg (7).

7. A leg and foot and forming device according to claim 2, characterized in that: A second mold core (121) is processed at the second inner mold (12), and the second mold core (121) matches the second horizontal punch (91).

8. A leg and foot and forming device according to claim 2, characterized in that: A second punching block (10) is installed on the second upper die (11), and the second punching block (10) matches the second horizontal die (9).

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