CN113600664A

CN113600664A - Non-cutting forming clamping device for metal stamping processing of construction machinery

Info

Publication number: CN113600664A
Application number: CN202111173584.9A
Authority: CN
Inventors: 张懿
Original assignee: Nantong Minglang Construction Machinery Co Ltd
Current assignee: Nantong Minglang Construction Machinery Co Ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2021-11-05
Anticipated expiration: 2041-10-09
Also published as: CN113600664B

Abstract

The invention provides a non-cutting forming clamping device for metal stamping processing of construction machinery, which relates to the technical field of metal processing and aims to solve the problems that in the metal stamping processing process of the construction machinery, in order to realize rapid streamlined operation, a multi-point traditional clamp has huge obstruction to the improvement of efficiency, needs frequent operation and is easy to cause safety accidents in the clamping or loosening process; end frames are respectively and vertically and upwards fixedly installed in the middle parts of the left end and the right end of the top plane of the base; the inner edge of the top plane of the end frame is vertically and upwards fixedly provided with a vertical frame plate; a middle connecting frame capable of sliding vertically is transversely arranged between the left vertical frame plate and the right vertical frame plate; and the upper end of the middle connecting frame is clamped with a stamping sleeve. The lower end of the inner side wall of the correcting guard plate is fixedly provided with the inner cutting plate, so that the stamping part can be corrected frequently until the stamping part is corrected, the correcting guard plate also plays a role of a protective stop, and splashes generated by stamping are avoided.

Description

Non-cutting forming clamping device for metal stamping processing of construction machinery

Technical Field

The invention relates to the technical field of metal processing, in particular to a non-cutting forming clamping device for metal stamping of construction machinery.

Background

The press forming is a processing and forming method for obtaining a workpiece (stamping part) with a required shape and size by applying an external force to a plate, a strip, a pipe, a section bar and the like by a press machine and a die to cause plastic deformation or separation.

For example, in the patent application No. cn201920820514.x, a metal punch forming device with a fixing function comprises a first base, wherein a supporting column is vertically arranged on the top surface of the first base, the top surface of the supporting column is connected with a horizontally arranged cross beam, a vertically downward pressing hydraulic cylinder is penetrated and fixedly arranged at the tail end of the cross beam, and a punch is arranged at the bottom of the downward pressing hydraulic cylinder; a first base right below the punch is provided with a supporting seat, the top surface of the supporting seat is provided with a supporting plate, and the center of the supporting plate is provided with a punching die corresponding to the punch; rectangular grooves are formed in the two sides of the supporting seat, and clamping devices are arranged in the two rectangular grooves; the clamping device comprises a first driving hydraulic cylinder fixed at the bottom of the rectangular groove, the top surface of the first driving hydraulic cylinder is connected with a second base horizontally arranged, and a second T-shaped supporting rod is arranged on the second base along the length axis direction of the second base. Can punch plates and can stably punch pipe fittings.

In the process of stamping and processing metal of construction machinery, in order to realize rapid streamlined operation, the multi-point traditional clamp has huge obstruction to the improvement of efficiency, needs frequent operation, and is easy to cause safety accidents in the process of clamping or loosening.

Disclosure of Invention

In order to solve the technical problems, the invention provides a non-cutting forming clamping device for stamping processing of building machinery metal, which aims to solve the problems that in the stamping processing process of the building machinery metal, in order to realize rapid streamlined operation, a multi-point traditional clamp has huge obstruction to efficiency improvement, needs frequent operation and is easy to cause safety accidents in the clamping or loosening process.

The invention relates to a non-cutting forming clamping device for metal stamping of construction machinery, which has the purpose and the effect and is achieved by the following specific technical means:

the non-cutting forming clamping device for metal stamping processing of the construction machinery comprises a base; end frames are respectively and vertically and upwards fixedly installed in the middle parts of the left end and the right end of the top plane of the base; the inner edge of the top plane of the end frame is vertically and upwards fixedly provided with a vertical frame plate; a middle connecting frame capable of sliding vertically is transversely arranged between the left vertical frame plate and the right vertical frame plate; the upper end of the middle connecting frame is clamped with a punching sleeve; a conversion sleeve block is vertically and slidably arranged in the vertical frame plate; the outer end of the conversion sleeve block is vertically and downwards fixedly provided with a pressure rod, and the lower end of the pressure rod penetrates through the end frame in a sliding manner; and the front end and the rear end between the middle connecting frame and the punching sleeve are respectively vertically and slidably provided with a correction guard plate.

Furthermore, the end frame comprises a guide rod, the middle of the outer end of the top plane of the end frame is vertically and upwards fixedly provided with the guide rod, and the outer end of the conversion sleeve block is sleeved on the guide rod in a sliding mode.

Furthermore, the vertical frame plate comprises an adjusting opening, a guide clamping groove, a strip-shaped hole and a vertical rail, and a rectangular adjusting opening penetrating through the middle of the vertical frame plate from left to right is formed in the middle of the vertical frame plate; semicircular guide clamping grooves are vertically formed in the front port wall and the rear port wall of the adjusting port; a strip-shaped hole which penetrates through the left and the right is vertically formed in the vertical frame plate outside the guide clamping groove; vertical rails are fixedly mounted on the vertical frame plates on the outer sides of the vertical edges at the front end and the rear end of the adjusting opening respectively, and the vertical rails are of T-shaped structures.

Furthermore, the middle connecting frame comprises a fin plate, a clamping sleeve, an outer connecting rod and an inner connecting rod, the fin plate is vertically and fixedly installed at the front end and the rear end of the side wall at the left end and the right end of the middle connecting frame respectively, and the fin plate is inserted in the strip-shaped hole in a sliding manner; the outer end of the fin plate is fixedly provided with a clamping sleeve which is matched with the vertical rail in a sliding manner; an outer connecting rod is fixedly connected between the front clamping sleeve and the rear clamping sleeve on the same side; an inner connecting rod is fixedly connected between the inner ends of the front and the rear fin plates on the same side.

Further, the correcting guard plate comprises a top plate, a pull rod, a tension spring and an inner cutting plate, and the top plate is transversely and vertically fixedly installed at the upper end of the side wall of the outer end of the correcting guard plate; two bilaterally symmetrical pull rods are vertically and fixedly installed downwards on the plane of the bottom of the top plate, and the lower ends of the pull rods slide through the fixed sleeve blocks on the middle connecting frame; the pull rod is sleeved with a tension spring, the upper end of the tension spring is fixedly connected with the top plate, and the lower end of the tension spring is fixedly connected with the fixed sleeve block; the lower end of the inner side wall of the correcting guard plate is fixedly provided with an inner cutting plate, and the lower end of the inner side of the inner cutting plate is of a beveling structure.

Furthermore, the punching sleeve comprises a hanging groove, the left end and the right end of the bottom of the punching sleeve are respectively provided with a longitudinal columnar hanging groove, and the hanging grooves are matched with the inner connecting rod in a sliding manner.

Furthermore, the conversion sleeve block comprises guide clamping plates, hanging plates and hanging holes, two guide clamping plates which are symmetrical in front and back are respectively and fixedly arranged at the inner end of the conversion sleeve block vertically, and the guide clamping plates are connected in the guide clamping grooves in a sliding and clamping manner; a transverse hanging plate is vertically and upwards fixedly arranged on the plane at the bottom of the conversion sleeve block; the middle part of the hanging plate is provided with a vertical hanging hole which penetrates through the hanging plate from front to back, and the outer connecting rod longitudinally penetrates through the hanging hole.

Furthermore, the pressure lever comprises a pressure plate and a spring, the lower end of the pressure lever is fixedly provided with the pressure plate, and the bottom plane of the pressure plate is of an inclined structure with a high outer end and a low inner end; the compression bar on the upper side of the end frame is sleeved with a spring.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the inner cutting plate is fixedly arranged at the lower end of the inner side wall of the correcting guard plate, the lower end of the inner side of the inner cutting plate is of a beveling structure, when the middle connecting frame is in a suspended state, the lower end of the correcting guard plate protrudes out of the lower end of the middle connecting frame under the action of self gravity, the inner cutting plate at the lower end of the correcting guard plate is firstly contacted with a stamping part in the process of moving down the middle connecting frame, and the correcting guard plate can perform traction reciprocating action under the combined action of the pull rod and the tension spring so as to frequently correct the stamping part until the correction of the stamping part is completed, and the correcting guard plate also plays a role of protecting a stop and avoiding splashes generated by stamping.

2. When the punching head drives the punching sleeve to move downwards, the punching sleeve is driven to move downwards, the punching sleeve presses the inner connecting rod through the hanging groove, so that the middle connecting frame moves downwards, the middle connecting frame drives the conversion sleeve block to move downwards through the outer connecting rod, the pressing rod moves downwards and is firstly contacted with the punching part to be pressed, the purpose of fixing the punching part in advance is achieved, protection and clamping can be completed before the punching premise, and the punching device is convenient, rapid and one-step.

3. According to the invention, the middle part of the hanging plate is provided with the vertical hanging hole which penetrates through the front and the back, the outer connecting rod longitudinally penetrates through the hanging hole, the pressing rod can be driven to move downwards through the hanging hole to complete the clamping action, when the outer connecting rod moves upwards, the conversion sleeve block moves upwards firstly, the pressing force of the pressing rod is slowly weakened under the action of the spring until the pressing rod is driven to move upwards, the problem that the stamping part is driven by a stamping head when the stamping head is withdrawn can be avoided, meanwhile, the position cannot be changed, the secondary stamping can be conveniently and directly carried out, and the problem that the primary stamping forming is unqualified can be conveniently remedied.

Drawings

FIG. 1 is a front right upper axial view of the present invention.

Fig. 2 is a schematic diagram of an enlarged portion a of fig. 1 according to the present invention.

Fig. 3 is a front right lower axial view of the present invention.

Fig. 4 is a schematic front view of the present invention.

Fig. 5 is a schematic axial view of the split state of the present invention.

Fig. 6 is a partial axial view of the middle connecting frame and the correcting protecting plate of the invention.

Fig. 7 is a schematic axial view of the present invention in a further disassembled state.

FIG. 8 is a schematic axial view of the transition block and strut of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a base; 2. an end frame; 201. a guide bar; 3. a vertical frame plate; 301. an adjusting port; 302. a guide clamping groove; 303. a strip-shaped hole; 304. a vertical rail; 4. a middle connecting frame; 401. a fin plate; 402. a card sleeve; 403. an outer link; 404. an inner link; 5. correcting the guard plate; 501. a top plate; 502. a pull rod; 503. a tension spring; 504. an inner cutting plate; 6. punching a sleeve; 601. hanging a groove; 7. converting the sleeve block; 701. a guide clamping plate; 702. hanging the plate; 703. hanging holes; 8. a pressure lever; 801. pressing a plate; 802. a spring.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Example (b):

as shown in figures 1 to 8:

the invention provides a non-cutting forming clamping device for metal stamping processing of construction machinery, which comprises a base 1; the middle parts of the left end and the right end of the top plane of the base 1 are respectively vertically and upwards fixedly provided with an end frame 2; a vertical frame plate 3 is vertically and upwards fixedly arranged at the edge of the inner side of the top plane of the end frame 2; a middle connecting frame 4 which can slide vertically is transversely arranged between the left and the right vertical frame plates 3; the upper end of the middle connecting frame 4 is clamped with a punching sleeve 6; a conversion sleeve block 7 is vertically and slidably arranged in the vertical frame plate 3; the outer end of the conversion sleeve block 7 is vertically and downwards fixedly provided with a pressure rod 8, and the lower end of the pressure rod 8 penetrates through the end frame 2 in a sliding manner; the front end and the rear end between the middle connecting frame 4 and the punching sleeve 6 are respectively vertically and slidably provided with a correction guard plate 5, by taking fig. 7 as a reference example, the correction guard plate 5 comprises a top plate 501, a pull rod 502, a tension spring 503 and an inner cutting plate 504, and the top plate 501 is transversely and vertically fixedly arranged at the upper end of the outer end side wall of the correction guard plate 5; two bilaterally symmetrical pull rods 502 are vertically and fixedly arranged on the bottom plane of the top plate 501 downwards, and the lower ends of the pull rods 502 slide through the fixed sleeve blocks on the middle connecting frame 4; a tension spring 503 is sleeved on the pull rod 502, the upper end of the tension spring 503 is fixedly connected with the top plate 501, and the lower end of the tension spring 503 is fixedly connected with the fixed sleeve block; the lower extreme fixed mounting who corrects 5 inside walls of backplate has interior cutting plate 504, the inboard lower extreme of interior cutting plate 504 is the beveling structure, well even frame 4 is when unsettled state, correct backplate 5 under self action of gravity, the lower extreme of even frame 4 in the lower extreme protrusion, the lower extreme interior cutting plate 504 that corrects backplate 5 in the in-process that well even frame 4 moved down at first contacts with the stamping workpiece, correct backplate 5 can carry out the reciprocal action of tractive under the combined action of pull rod 502 and extension spring 503, so that frequently correct the stamping workpiece, until the completion is corrected to the stamping workpiece, correct backplate 5 still plays the effect of protection backstop, avoid the punching press to produce the splash.

By taking fig. 1 as a reference example, the end frame 2 includes a guide rod 201, the middle of the outer end of the top plane of the end frame 2 is vertically and upwardly fixedly mounted with the guide rod 201, the outer end of the conversion sleeve block 7 is slidably sleeved on the guide rod 201, and the guide rod 201 is used for vertically guiding the conversion sleeve block 7 to avoid rotation.

The vertical frame plate 3 comprises an adjusting opening 301, a guide clamping groove 302, a strip-shaped hole 303 and a vertical rail 304, and the middle part of the vertical frame plate 3 is provided with a rectangular adjusting opening 301 which penetrates through the vertical frame plate from left to right; semicircular guide clamping grooves 302 are vertically formed in the front port wall and the rear port wall of the adjusting port 301; a strip-shaped hole 303 which penetrates through the vertical frame plate 3 from left to right is vertically formed on the outer side of the guide clamping groove 302; vertical rails 304 are respectively and fixedly mounted on the vertical frame plates 3 on the outer sides of the vertical edges at the front end and the rear end of the adjusting opening 301, the vertical rails 304 are of T-shaped structures, the conversion sleeve block 7 can vertically slide in the guide clamping groove 302 in the adjusting opening 301, and the strip-shaped holes 303 and the vertical rails 304 can be used for guiding the vertical movement of the middle connecting frame 4.

Taking fig. 2 and 7 as reference examples, the middle connecting frame 4 includes a fin 401, a ferrule 402, an outer connecting rod 403 and an inner connecting rod 404, the fin 401 is vertically and fixedly mounted at the front end and the rear end of the side walls at the left and right ends of the middle connecting frame 4, and the fin 401 is slidably inserted into the strip-shaped hole 303; the outer end of the fin plate 401 is fixedly provided with a clamping sleeve 402 which is matched with the vertical rail 304 in a sliding manner; an outer connecting rod 403 is fixedly connected between the front ferrule 402 and the rear ferrule 402 on the same side; an inner connecting rod 404 is fixedly connected between the inner ends of the front and rear fin plates 401 on the same side, and the middle connecting frame 4 vertically slides in the strip-shaped hole 303 through the fin plates 401 and is sleeved on the vertical rail 304 in a sliding manner through a clamping sleeve 402 to assist in guiding vertical sliding motion.

Wherein, the punching press cover 6 includes hanging groove 601, longitudinal column string groove 601 has been seted up respectively at both ends about punching press cover 6 bottom, it suits with interior connecting rod 404 slides to hang groove 601, when the punching press head drove punching press cover 6 and moves down, punching press cover 6 is driven and moves down, punching press cover 6 oppresses interior connecting rod 404 through hanging groove 601, make well even 4 move down, well even 4 moves down through outer connecting rod 403 drive conversion sleeve piece 7 again, thereby make depression bar 8 move down, contact earlier with the stamping workpiece and compress tightly, so as to reach the purpose of fixing the stamping workpiece in advance, make protection and clamp tightly all can accomplish before the punching press prerequisite, and is convenient and fast, and is finished at one glance.

As can be seen in fig. 7 and 8, the conversion sleeve block 7 includes two guide snap-gauge boards 701, a hanging board 702 and a hanging hole 703, two front and back symmetrical guide snap-gauge boards 701 are respectively vertically and fixedly installed at the inner end of the conversion sleeve block 7, and the guide snap-gauge boards 701 are slidably clamped in the guide snap-gauge grooves 302; a transverse hanging plate 702 is vertically and upwards fixedly arranged on the plane at the bottom of the conversion sleeve block 7; vertical hanging hole 703 that runs through around link plate 702 middle part is seted up, outer connecting rod 403 then vertically passes hanging hole 703, can drive depression bar 8 through hanging hole 703 and move down and accomplish clamping action, and when moving up, conversion sleeve block 7 shifts up earlier, depression bar 8 is the pressure force slowly weakens under the effect of spring 802, shift up until depression bar 8 is driven, can avoid the problem that the punching press head drove the stamping workpiece when withdrawing from, the position can not change simultaneously, the secondary punching press of can being convenient for is directly gone on, be convenient for remedy the unqualified problem of one-time stamping forming.

The pressing rod 8 comprises a pressing plate 801 and a spring 802, the pressing plate 801 is fixedly mounted at the lower end of the pressing rod 8, and the bottom plane of the pressing plate 801 is of an inclined structure with a high outer end and a low inner end; the compression bar 8 on the upper side of the end frame 2 is sleeved with a spring 802, a pressure plate 801 of the compression bar 8 is firstly contacted with a stamping part to push the stamping part inwards and clamp the stamping part, and fixing and correcting are facilitated.

The specific use mode and function of the embodiment are as follows:

in the using process, when a punch penetrates through the punching sleeve 6 and drives the punching sleeve 6 to move downwards, the punching sleeve 6 is driven to move downwards, the punching sleeve 6 presses the inner connecting rod 404 through the hanging groove 601, so that the middle connecting frame 4 moves downwards, the middle connecting frame 4 drives the conversion sleeve block 7 to move downwards through the outer connecting rod 403, so that the pressing rod 8 moves downwards and is firstly contacted with a punching part for pressing, the purpose of fixing the punching part in advance is achieved, the protection and the clamping can be finished before the punching is realized, the operation is convenient and fast, the lower end of the inner side wall of the correcting guard plate 5 is fixedly provided with the inner cutting plate 504, the lower end of the inner side wall of the inner cutting plate 504 is of a bevel structure, when the middle connecting frame 4 is in a suspension state, the lower end of the correcting guard plate 5 protrudes out of the lower end of the middle connecting frame 4, the inner cutting plate 504 at the lower end of the correcting guard plate 5 is firstly contacted with the punching part in the process of moving downwards of the middle connecting frame 4, the correcting guard plate 5 can perform traction reciprocating action under the combined action of the pull rod 502 and the tension spring 503 so as to frequently correct the stamping part until the stamping part is corrected, and the correcting guard plate 5 also plays a role of a protective stop to avoid splashes generated by stamping;

in addition, the vertical hanging hole 703 that runs through around link plate 702 middle part is seted up, outer connecting rod 403 then vertically passes hanging hole 703, can drive depression bar 8 through hanging hole 703 and move down to accomplish clamping action, and when moving up, conversion nest block 7 shifts up earlier, depression bar 8 is the pressure force of pressure slowly weakening under the effect of spring 802, until depression bar 8 is driven to shift up, can avoid the problem that the stamping head moved the stamping workpiece when withdrawing from, the position can not change simultaneously, the secondary punching press of being convenient for is directly gone on, be convenient for remedy the unqualified problem of one-time stamping forming.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. Non-cutting forming clamping device for metal stamping of construction machinery is characterized in that: the method comprises the following steps: a base (1);

the middle parts of the left end and the right end of the top plane of the base (1) are respectively vertically and upwards fixedly provided with an end frame (2); the inner side edge of the top plane of the end frame (2) is vertically and upwards fixedly provided with a vertical frame plate (3); a middle connecting frame (4) which can slide vertically is transversely arranged between the left and the right vertical frame plates (3); the upper end of the middle connecting frame (4) is clamped with a punching sleeve (6);

a conversion sleeve block (7) is vertically and slidably mounted in the vertical frame plate (3); the outer end of the conversion sleeve block (7) is vertically and downwards fixedly provided with a pressure lever (8), and the lower end of the pressure lever (8) penetrates through the end frame (2) in a sliding manner;

the front end and the rear end between the middle connecting frame (4) and the punching sleeve (6) are respectively vertically and slidably provided with a correcting guard plate (5).

2. The non-cutting forming clamping device for metal stamping of construction machinery as claimed in claim 1, wherein: the middle part of the outer end of the top plane of the end frame (2) is vertically and upwards fixedly provided with a guide rod (201), and the outer end of the conversion sleeve block (7) is sleeved on the guide rod (201) in a sliding manner.

3. The non-cutting forming clamping device for metal stamping of construction machinery as claimed in claim 1, wherein: the middle part of the vertical frame plate (3) is provided with a rectangular adjusting opening (301) which penetrates through the left and the right; semicircular guide clamping grooves (302) are vertically formed in the front port wall and the rear port wall of the adjusting port (301);

a strip-shaped hole (303) which penetrates through the vertical frame plate (3) at the left and right is vertically formed in the outer side of the guide clamping groove (302);

vertical rails (304) are fixedly mounted on the vertical frame plates (3) on the outer sides of the vertical edges at the front end and the rear end of the adjusting opening (301), and the vertical rails (304) are of T-shaped structures.

4. The non-cutting forming clamping device for metal stamping of construction machinery as claimed in claim 3, wherein: the front end and the rear end of the side walls at the left end and the right end of the middle connecting frame (4) are respectively and fixedly provided with a fin plate (401), and the fin plates (401) are inserted in the strip-shaped holes (303) in a sliding manner; a clamping sleeve (402) which is matched with the vertical rail (304) in a sliding manner is fixedly arranged at the outer end of the fin plate (401); an outer connecting rod (403) is fixedly connected between the front ferrule and the rear ferrule (402) on the same side; an inner connecting rod (404) is fixedly connected between the inner ends of the front and the rear fin plates (401) on the same side.

5. The non-cutting forming clamping device for metal stamping of construction machinery as claimed in claim 1, wherein: a top plate (501) is transversely and vertically fixedly installed at the upper end of the outer end side wall of the correcting guard plate (5); two bilaterally symmetrical pull rods (502) are vertically and fixedly arranged on the bottom plane of the top plate (501) downwards, and the lower ends of the pull rods (502) slide through the fixed sleeve blocks on the middle connecting frame (4); the pull rod (502) is sleeved with a tension spring (503), the upper end of the tension spring (503) is fixedly connected with the top plate (501), and the lower end of the tension spring (503) is fixedly connected with the fixed sleeve block.

6. The non-cutting forming clamping device for metal stamping of construction machinery as claimed in claim 5, wherein: the lower end of the inner side wall of the correcting guard plate (5) is fixedly provided with an inner cutting plate (504), and the lower end of the inner side of the inner cutting plate (504) is of a beveling structure.

7. The non-cutting forming clamping device for metal stamping of construction machinery as claimed in claim 4, wherein: the left end and the right end of the bottom of the punching sleeve (6) are respectively provided with a longitudinal columnar hanging groove (601), and the hanging grooves (601) are matched with the inner connecting rod (404) in a sliding manner.

8. The non-cutting forming clamping device for metal stamping of construction machinery as claimed in claim 3, wherein: the inner end of the conversion sleeve block (7) is respectively vertically and fixedly provided with two guide clamping plates (701) which are symmetrical front and back, and the guide clamping plates (701) are slidably clamped in the guide clamping grooves (302).

9. The non-cutting forming clamping device for metal stamping of construction machinery as claimed in claim 4, wherein: a transverse hanging plate (702) is vertically and upwards fixedly arranged on the bottom plane of the conversion sleeve block (7); the middle part of the hanging plate (702) is provided with a vertical hanging hole (703) which penetrates through the hanging plate from front to back, and the outer connecting rod (403) longitudinally penetrates through the hanging hole (703).

10. The non-cutting forming clamping device for metal stamping of construction machinery as claimed in claim 1, wherein: the lower end of the pressure lever (8) is fixedly provided with a pressure plate (801), and the bottom plane of the pressure plate (801) is of an inclined structure with a high outer end and a low inner end; the spring (802) is further included, and the compression bar (8) on the upper side of the end frame (2) is sleeved with the spring (802).