CN114570834A

CN114570834A - Stamping die for rear floor stamping part

Info

Publication number: CN114570834A
Application number: CN202110683359.3A
Authority: CN
Inventors: 孟瑞章; 孟旭; 何涛; 乐绪刚; 姚孝伟
Original assignee: Jiangsu Ruijin Equipment Science & Technology Co ltd
Current assignee: Jiangsu Ruijin Equipment Science & Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-06-03

Abstract

The invention discloses a stamping die for rear floor stamping parts, which comprises a lower die component and an upper die component, wherein the lower die component comprises a lower base, a lower die plate is arranged on the lower base, a lower die surface is arranged on the lower die plate, a die groove and a die hole are formed in the upper surface of the lower die surface, a plurality of through holes are formed in the die groove, a plurality of support columns are arranged on the lower base in a rectangular array manner, first threads are formed at one ends of the support columns, stamping springs are sleeved on the support columns, and a material cleaning component is arranged below the lower base; the invention can quickly push out waste materials generated in the stamping process of the rear floor stamping part from the two sides of the lower base.

Description

Stamping die for rear floor stamping part

Technical Field

The invention relates to the technical field of stamping production of automobile rear floor stamping parts, in particular to a stamping die for rear floor stamping parts.

Background

The stamping die is a special process device for processing metal materials or non-metal materials into semi-finished products, parts and the like in cold stamping processing, and the die arranged on a press is utilized to apply pressure to the materials to enable the materials to generate separation or plastic deformation, so that required parts are obtained;

in the industrial production of automobiles, the existing stamping die for rear floor stamping parts can cause the plastic deformation of plates and the separation of punching and blanking to be overlapped in the stamping process, so that the plastic deformation of the rear floor stamping parts is uneven or punched holes are deformed, and the quality problem of products is more;

to this end, we propose a stamping die for rear floor stampings.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide a stamping die for rear floor stamping parts, wherein an upper base is sleeved on a support column on a lower base, and a stamping spring is sleeved on the support column, so that the stamping die can be jacked and reset through the stamping spring after the rear floor stamping parts are stamped at one time, the rear floor stamping parts can be conveniently taken out from between an upper die assembly and a lower die assembly, secondly, a die groove belongs to the extrusion part of the rear floor stamping parts, the part does not need to be stamped and cut off, for the stamping of through holes in the die groove, firstly, the die is deformed and stamped, then, a punching assembly is adopted for air pressure stamping, the part can be stamped after being effectively deformed, the stamping effect is good, and the problem that the stamping parts are not uniformly deformed or the holes are irregularly deformed when the traditional stamping parts are deformed and extruded and stamped is solved, to solve the problems in the background described above.

The purpose of the invention can be realized by the following technical scheme:

a stamping die for rear floor stamping parts comprises a lower die assembly and an upper die assembly, wherein the lower die assembly comprises a lower base, a lower die plate is arranged on the lower base, a lower die surface is arranged on the lower die plate, a die groove and a die hole are formed in the upper surface of the lower die surface, a plurality of through holes are formed in the die groove, a plurality of support columns are arranged on the lower base in a rectangular array mode, first threads are formed in one ends of the support columns, stamping springs are sleeved on the support columns, and a material cleaning assembly is arranged below the lower base;

the upper die assembly comprises an upper base, an upper die plate is arranged below the upper base, an upper die surface is arranged below the upper die plate, a module and first die nails are arranged on the lower surface of the upper die surface, a plurality of nail holes are formed in the module, a plurality of limiting holes are formed in the upper die surface in a rectangular array, a fixing assembly is arranged in each limiting hole, a punching assembly is arranged in the upper die surface, punching positions are symmetrically formed above the upper base, and a plurality of connecting holes are formed in the upper base in a rectangular array;

the upper base is sleeved and installed on the support column on the lower base through the connecting hole and is fixed through the nut.

As a further scheme of the invention: the punching assembly comprises a punching box, a plurality of nail outlet holes are formed in the lower portion of the punching box, an air inlet is formed in the upper portion of the punching box, an air cavity is formed in the punching box, a sliding cavity is formed in the lower portion of the air cavity, a punching slider is slidably mounted in the sliding cavity, a plurality of second die nails are arranged below the punching slider, a reset spring is arranged on each second die nail in a sleeved mode, and a second sealing gasket is arranged above the punching slider.

As a further scheme of the invention: the material cleaning component comprises a first push plate and a second push plate which are symmetrically arranged side by side, and further comprises a first telescopic rod and a second telescopic rod which are arranged at the bottom of the lower base in an opposite angle mode, wherein a first push block is arranged at one end of the first push plate, the first push block is connected with the end portion of the first telescopic rod, a second push block is arranged at one end of the second push plate, and the second push block is connected with the end portion of the second telescopic rod.

As a further scheme of the invention: the fixed component comprises a fixed block which is arranged in a limiting hole in an inserting mode, a limiting ring is arranged outside the fixed block, the limiting ring is slidably mounted inside the limiting hole, a buffer spring is arranged on the fixed block in a sleeved mode, one end of the buffer spring abuts against the inside of the limiting hole, and the other end of the buffer spring abuts against the limiting ring.

As a further scheme of the invention: the upper portion of the punching box is inserted into the upper die plate and is in threaded connection with a connecting air hole formed in the upper die plate through an air inlet, the central axis of the connecting air hole is overlapped with the central axis of an air hole formed in the upper base, an air receiving hole is formed above the air hole, the lower portion of the punching box is inserted into the upper die face, and the second die nail, the nail outlet hole and the nail hole are identical in diameter and overlapped with the central axis.

As a further scheme of the invention: and a blanking hole is formed below the lower die surface, a through hole is formed in the lower die plate, and the central axes of the blanking hole and the through hole are overlapped with the central axis of the die hole.

As a further scheme of the invention: the material dropping position is arranged in the middle of the lower base, the waste outlet is formed in the lower portion of the lower base, sliding grooves are formed in the two sides of the waste outlet in diagonal directions, the first pushing block and the second pushing block are respectively installed in the sliding grooves in the diagonal directions in a sliding mode, and the first telescopic rod and the second telescopic rod are fixedly installed on the two sides of the waste outlet in the bottom of the lower base.

As a further scheme of the invention: and a first sealing gasket is arranged between the air hole of the upper base and the connecting air hole of the upper template.

As a further scheme of the invention: the lower die is characterized in that a plurality of first invisible grooves are formed in the lower die plate in a rectangular array, the lower die plate is connected with the lower base through first bolts arranged in the first invisible grooves, a plurality of second invisible grooves are formed in the lower die surface in a rectangular array, and the lower die surface is connected with the lower die plate through second bolts arranged in the second invisible grooves.

As a further scheme of the invention: the module is matched with the die cavity, the first die nail is matched with the die hole, and the second die nail is matched with the through hole.

The invention has the beneficial effects that:

according to the invention, the upper base is sleeved on the support column arranged on the lower base, and the stamping spring is sleeved on the support column, so that the stamping die can be lifted and reset through the stamping spring after the rear floor stamping part is stamped at one time, the rear floor stamping part can be conveniently taken out from between the upper die assembly and the lower die assembly, and then the die cavity belongs to the extrusion part of the rear floor stamping part, the part does not need to be stamped and cut;

according to the invention, when the stamping die is used for stamping the rear floor stamping part, more waste materials are generated, wherein the punched waste materials can fall below the lower base through the blanking hole and the through hole, and when more waste materials exist, the first telescopic rod and the second telescopic rod can respectively push the first push plate and the second push plate to push the waste materials out of two ends of the sliding groove below the lower base, so that on one hand, the working effect of the stamping die is prevented from being influenced by the waste materials, on the other hand, the danger of manual cleaning is solved, the danger of workers in the operation process is prevented, and the safety of equipment is improved.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a schematic view of the connection structure of the upper mold plate and the upper base according to the present invention;

FIG. 3 is a schematic cross-sectional view of a stamped box mounting arrangement of the present invention;

FIG. 4 is a schematic cross-sectional view of the connection structure of the lower mold plate and the lower base in the present invention;

FIG. 5 is a schematic view of the construction of the lower base of the present invention;

FIG. 6 is a schematic view of a connection structure of a first push plate and a first telescopic rod according to the present invention;

FIG. 7 is a schematic cross-sectional view of the upper mold surface of the present invention;

FIG. 8 is a schematic view of the connection structure of the lower die surface and the lower die plate in the present invention.

In the figure: 1. a lower die assembly; 11. a lower base; 111. a support pillar; 112. a first thread; 113. stamping a spring; 114. a waste outlet; 115. a nut; 116. material level dropping; 117. a chute; 12. a lower template; 121. a first hidden slot; 122. a first bolt; 123. a through hole; 13. a lower die surface; 130. a die cavity; 131. perforating; 132. a second hidden slot; 133. a second bolt; 134. a die hole; 135. a blanking hole; 2. an upper die assembly; 21. an upper base; 210. punching; 211. air receiving holes; 212. connecting holes; 213. air holes; 214. a first gasket; 22. mounting a template; 221. connecting the air holes; 23. feeding a die surface; 230. a module; 231. a first die nail; 232. a limiting hole; 233. nailing holes; 3. a punching assembly; 30. an air inlet; 31. punching a box; 32. an air cavity; 33. a sliding cavity; 34. stamping a sliding block; 35. a second gasket; 36. a second die nail; 361. a nail outlet hole; 37. a return spring; 4. a material cleaning component; 41. a first push plate; 411. a first push block; 42. a second push plate; 421. a second push block; 43. a first telescopic rod; 44. a second telescopic rod; 5. a fixing assembly; 51. a fixed block; 511. a limiting ring; 52. a buffer spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a stamping die for a rear floor stamping part includes a lower die assembly 1 and an upper die assembly 2, the lower die assembly 1 includes a lower base 11, a lower die plate 12 is disposed on the lower base 11, a lower die surface 13 is disposed on the lower die plate 12, a die slot 130 and a die hole 134 are disposed on the upper surface of the lower die surface 13, a plurality of through holes 131 are disposed in the die slot 130, a plurality of support columns 111 are disposed on the lower base 11 in a rectangular array, a first thread 112 is disposed at one end of each support column 111, a stamping spring 113 is sleeved on each support column 111, a material cleaning assembly 4 is disposed below the lower base 11, and waste materials generated by the rear floor stamping part in a stamping process can be rapidly pushed out from two sides of the lower base 11;

the upper die assembly 2 comprises an upper base 21, an upper die plate 22 is arranged below the upper base 21, an upper die surface 23 is arranged below the upper die plate 22, a module 230 and first die nails 231 are arranged on the lower surface of the upper die surface 23, a plurality of nail holes 233 are formed in the module 230, a plurality of limiting holes 232 are formed in the upper die surface 23 in a rectangular array, fixing assemblies 5 are arranged in the limiting holes 232, a punching assembly 3 is arranged in the upper die surface 23, punching positions 210 are symmetrically formed above the upper base 21, a plurality of connecting holes 212 are formed in the upper base 21 in a rectangular array, the upper base 21 is sleeved on a supporting column 111 on the lower base 11 through the connecting holes 212 and is fixed through a nut 115, the upper base 21 is sleeved on the supporting column 111 on the lower base 11 and is sleeved on a punching spring 113, so that the punching die can be lifted and reset through the punching spring 113 after a rear floor is punched at one time, be convenient for take out back floor stamping workpiece from last mould subassembly 2 and lower mould subassembly 1 between, secondly, die cavity 130 belongs to the extrusion position of back floor stamping workpiece, this position need not the punching press excision, to the punching press of the inside perforation 131 of die cavity 130, make module 230 carry out the deformation punching press earlier, adopt punching assembly 3 to carry out the atmospheric pressure punching press again, can guarantee this position and carry out the punching press after effectual deformation, the punching press is effectual, solved traditional stamping workpiece and carried out making the stamping workpiece inhomogeneous or the hole deformation anomalous condition simultaneously carrying out deformation extrusion and hole punching press.

The punching component 3 comprises a punching box 31, a plurality of nail holes 361 are formed in the lower portion of the punching box 31, an air inlet 30 is arranged above the punching box 31, an air cavity 32 is formed in the punching box 31, a sliding cavity 33 is formed in the lower portion of the air cavity 32, a punching slider 34 is slidably mounted in the sliding cavity 33, a plurality of second die nails 36 are arranged below the punching slider 34, a reset spring 37 is sleeved on the second die nails 36, a second sealing gasket 35 is arranged above the punching slider 34, the punching slider 34 can generate downward impact force after receiving air pressure, so that the air tightness in the punching process is guaranteed, the second sealing gasket 35 is arranged above the punching slider 34, and the air tightness of the punching slider 34 at the initial position is guaranteed.

The material cleaning component 4 comprises a first push plate 41 and a second push plate 42 which are symmetrically arranged in parallel, and further comprises a first telescopic rod 43 and a second telescopic rod 44 which are diagonally arranged at the bottom of the lower base 11, a first push block 411 is arranged at one end of the first push plate 41, the first push block 411 is connected with the end of the first telescopic rod 43, a second push block 421 is arranged at one end of the second push plate 42, the second push block 421 is connected with the end of the second telescopic rod 44, and the first telescopic rod 43 and the second telescopic rod 44 extend out respectively, so that the first push block 411 and the second push block 421 can be pushed to the two sides of the lower base 11, and waste materials can be pushed out.

Fixed subassembly 5 sets up fixed block 51 in spacing hole 232 including pegging graft, the outside of fixed block 51 is provided with spacing ring 511, spacing ring 511 slidable mounting is in the inside of spacing hole 232, it is provided with buffer spring 52 to cup joint on fixed block 51, buffer spring 52's one end and spacing hole 232's inside butt, buffer spring 52's the other end and spacing ring 511 looks butt, when stamping contact is carried out with lower die face 13 at last die face 23, fixed block 51 at first contacts with the back floor stamping workpiece on lower die face 13, can carry out spacing fixed to it, guarantee at the in-process of quick punching press, the circumstances of skew and slip can not take place for the back floor stamping workpiece, and fixed block 51 will guarantee can not produce the influence of deformation to the back floor stamping workpiece, so fixed block 51 need adopt rubber products or the tip of fixed block 51 to adopt rubber products.

The upper part of the punching box 31 is inserted on the upper template 22 and is in threaded connection with a connecting air hole 221 formed in the upper template 22 through an air inlet 30, the central axis of the connecting air hole 221 is overlapped with the central axis of an air hole 213 formed in the upper base 21, an air receiving hole 211 is arranged above the air hole 213, the lower part of the punching box 31 is inserted on the upper template surface 23, and the second template nail 36, the nail outlet hole 361 and the nail hole 233 have the same diameter and the central axes are overlapped.

The blanking hole 135 is formed below the lower die surface 13, the through hole 123 is formed in the lower die plate 12, the central axes of the blanking hole 135 and the through hole 123 are overlapped with the central axis of the die hole 134, waste materials generated by punching of the rear floor punching part can fall below the lower base 11 conveniently, real-time cleaning is not needed, and the continuity of the punching process of the rear floor punching part can be guaranteed.

The middle part of the lower base 11 is provided with a blanking position 116, the lower part of the lower base 11 is provided with a waste outlet 114, two sides of the waste outlet 114 are provided with slide grooves 117 in opposite angles, a first push block 411 and a second push block 421 are respectively and slidably mounted in the slide grooves 117 in opposite angles, a first telescopic rod 43 and a second telescopic rod 44 are fixedly mounted at two sides of the waste outlet 114 at the bottom of the lower base 11, when the stamping die is used for stamping a rear floor stamping part, more waste materials can be generated, wherein the punched waste materials can fall into the lower part of the lower base 11 through a blanking hole 135 and a through hole 123, when the waste materials are more, a first telescopic rod 43 and a second telescopic rod 44 can respectively push a first push plate 41 and a second push plate 42 to push the waste materials out from two ends of the slide grooves 117 below the lower base 11, on one hand, the working effect of the stamping die is prevented from being influenced by too much waste materials, on the other hand, the danger of manual cleaning is solved, prevent that the workman from taking place danger in operation process, improved the security of equipment.

A first sealing gasket 214 is arranged between the air hole 213 of the upper base 21 and the connecting air hole 221 of the upper template 22, so that the sealing performance is ensured.

The lower template 12 is provided with a plurality of first hidden grooves 121 in a rectangular array, the lower template 12 is connected with the lower base 11 through first bolts 122 arranged in the first hidden grooves 121, the lower template 13 is provided with a plurality of second hidden grooves 132 in a rectangular array, the lower template 13 is connected with the lower template 12 through second bolts 133 arranged in the second hidden grooves 132, the first hidden grooves 121 and the second hidden grooves 132 are formed, so that the attractiveness of connection among the lower template 13, the lower template 12 and the lower base 11 is ensured, and the connection among the upper template 23, the upper template 22 and the upper base 21 is also realized by adopting the connection mode, so that the structure is unified, and the appearance is attractive.

The mold block 230 fits into the mold cavity 130, the first mold pin 231 fits into the mold hole 134, and the second mold pin 36 fits into the through hole 131.

The working principle of the invention is as follows:

before use, the lower base 11 is fixedly arranged on a punching table of a punching machine, then the lower template 12 and the lower die surface 13 are sequentially arranged, the punching spring 113 is sleeved on the supporting column 111, then the upper base 21, the upper template 22 and the upper die surface 23 are sequentially and fixedly arranged, the upper base 21 is arranged on the supporting column 111 through the connecting hole 212, the punching position 210 on the upper base 21 is connected with the punching column of the punching machine, and the air receiving hole 211 is connected with an air source on the punching machine;

when the punching machine is used, the rear floor punching part is placed on the lower die surface 13, the punching machine is started, the punching column of the punching machine pushes the upper base 21 to move downwards, so that the upper die surface 23 compresses the rear floor punching part, after compression, air source gas enters the air cavity 32 through the air receiving hole 211, the air hole 213 and the air inlet 30 and acts on the punching slide block 34, so that the punching slide block 34 moves downwards to punch the through hole 131 of the rear floor punching part;

after punching, the punching machine punching post resets, goes up die surface 23 and lower die surface 13 separation, takes off back floor stamping workpiece, and the fertilizer that the punching press produced falls in the below of base 11 through material level 116 that falls, then first telescopic link 43 and second telescopic link 44 stretch out to promote first push pedal 41 and second push pedal 42 and move to both sides, release the waste material by the both sides of base 11 down.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

Claims

1. The stamping die for the rear floor stamping part comprises a lower die component (1) and an upper die component (2), and is characterized in that the lower die component (1) comprises a lower base (11), a lower die plate (12) is arranged on the lower base (11), a lower die surface (13) is arranged on the lower die plate (12), a die groove (130) and a die hole (134) are formed in the upper surface of the lower die surface (13), a plurality of through holes (131) are formed in the die groove (130), a plurality of support columns (111) are arranged on the lower base (11) in a rectangular array, a first thread (112) is formed at one end of each support column (111), a stamping spring (113) is sleeved on each support column (111), and a material cleaning component (4) is arranged below the lower base (11);

the upper die assembly (2) comprises an upper base (21), an upper die plate (22) is arranged below the upper base (21), an upper die surface (23) is arranged below the upper die plate (22), a module (230) and first die nails (231) are arranged on the lower surface of the upper die surface (23), a plurality of nail holes (233) are formed in the module (230), a plurality of limiting holes (232) are formed in the upper die surface (23) in a rectangular array, a fixing assembly (5) is arranged in each limiting hole (232), a punching assembly (3) is arranged in the upper die surface (23), punching positions (210) are symmetrically formed above the upper base (21), and a plurality of connecting holes (212) are formed in the upper base (21) in a rectangular array;

the upper base (21) is sleeved on a support column (111) on the lower base (11) through a connecting hole (212) and fixed through a nut (115).

2. The stamping die for the rear floor stamping part as claimed in claim 1, wherein the punching assembly (3) comprises a stamping box (31), a plurality of nail outlet holes (361) are formed below the stamping box (31), an air inlet (30) is arranged above the stamping box (31), an air cavity (32) is formed inside the stamping box (31), a sliding cavity (33) is formed below the air cavity (32), a stamping slider (34) is slidably mounted inside the sliding cavity (33), a plurality of second die nails (36) are arranged below the stamping slider (34), a return spring (37) is sleeved on the second die nails (36), and a second sealing gasket (35) is arranged above the stamping slider (34).

3. The stamping die for the rear floor stamping part as claimed in claim 1, wherein the material cleaning assembly (4) comprises a first pushing plate (41) and a second pushing plate (42) which are symmetrically arranged in parallel, and further comprises a first telescopic rod (43) and a second telescopic rod (44) which are diagonally arranged at the bottom of the lower base (11), a first pushing block (411) is arranged at one end of the first pushing plate (41), the first pushing block (411) is connected with the end portion of the first telescopic rod (43), a second pushing block (421) is arranged at one end of the second pushing plate (42), and the second pushing block (421) is connected with the end portion of the second telescopic rod (44).

4. The stamping die for the rear floor stamping part according to claim 1, wherein the fixing component (5) comprises a fixing block (51) inserted and arranged in a limiting hole (232), a limiting ring (511) is arranged outside the fixing block (51), the limiting ring (511) is slidably arranged inside the limiting hole (232), a buffer spring (52) is sleeved on the fixing block (51), one end of the buffer spring (52) is abutted against the inside of the limiting hole (232), and the other end of the buffer spring (52) is abutted against the limiting ring (511).

5. The stamping die for the rear floor stamping part as claimed in claim 2, wherein the upper part of the stamping box (31) is inserted into the upper die plate (22) and is in threaded connection with a connecting air hole (221) formed in the upper die plate (22) through an air inlet (30), the central axis of the connecting air hole (221) is overlapped with the central axis of an air hole (213) formed in the upper base (21), an air receiving hole (211) is formed above the air hole (213), the lower part of the stamping box (31) is inserted into the upper die surface (23), and the second die nail (36), the nail outlet hole (361) and the nail hole (233) have the same diameter and the central axes are overlapped.

6. The stamping die for the rear floor stamping part as claimed in claim 1, wherein a blanking hole (135) is formed below the lower die surface (13), a through hole (123) is formed in the lower die plate (12), and the central axes of the blanking hole (135) and the through hole (123) are overlapped with the central axis of the die hole (134).

7. The stamping die for the rear floor stamping part as claimed in claim 3, wherein a material dropping position (116) is formed in the middle of the lower base (11), a waste outlet (114) is formed below the lower base (11), sliding grooves (117) are formed in opposite angles on two sides of the waste outlet (114), the first pushing block (411) and the second pushing block (421) are respectively slidably mounted in the sliding grooves (117) arranged in opposite angles, and the first telescopic rod (43) and the second telescopic rod (44) are fixedly mounted on two sides of the waste outlet (114) at the bottom of the lower base (11).

8. A press tool for rear floor stampings as claimed in claim 1 characterised in that a first gasket (214) is provided between the air hole (213) of the upper base (21) and the connecting air hole (221) of the upper die plate (22).

9. The stamping die for the rear floor stamping part as claimed in claim 1, wherein a plurality of first hidden grooves (121) are formed in the lower die plate (12) in a rectangular array, the lower die plate (12) is connected with the lower base (11) through first bolts (122) arranged in the first hidden grooves (121), a plurality of second hidden grooves (132) are formed in the lower die surface (13) in a rectangular array, and the lower die surface (13) is connected with the lower die plate (12) through second bolts (133) arranged in the second hidden grooves (132).

10. A stamping die for a rear floor stamping according to claim 2, characterized in that the die block (230) is adapted to the die cavity (130), the first die pin (231) is adapted to the die hole (134), and the second die pin (36) is adapted to the through hole (131).