CN119407005B - Car rear floor drawing die structure - Google Patents

Car rear floor drawing die structure Download PDF

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Publication number
CN119407005B
CN119407005B CN202510005771.8A CN202510005771A CN119407005B CN 119407005 B CN119407005 B CN 119407005B CN 202510005771 A CN202510005771 A CN 202510005771A CN 119407005 B CN119407005 B CN 119407005B
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China
Prior art keywords
die
upper die
lower die
plate
rear floor
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CN202510005771.8A
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CN119407005A (en
Inventor
张邦成
常笑鹏
邵昱博
柳虹亮
陈司昱
张曦予
庞在祥
高智
尹晓静
郜思洋
赵航
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Changchun University of Technology
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Changchun University of Technology
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Priority to CN202510005771.8A priority Critical patent/CN119407005B/en
Publication of CN119407005A publication Critical patent/CN119407005A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/10—Die sets; Pillar guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/003—Positioning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

本发明公开了一种轿车后地板拉延模具结构，涉及拉延模具技术领域，包括上模机构、压边机构和下模机构，所述上模机构位于下模机构的上方，所述压边机构位于下模机构的顶部，所述上模机构包括上模座，所述上模座的底部开设有若干道缓冲槽，所述压边机构包括压边圈，压边圈用于压紧板料、防止起皱和开裂，所述压边圈的顶部设置有若干个缓冲凸模，缓冲凸模用于配合缓冲槽在板料上形成缓冲区，所述下模机构包括下模座。本发明提高了轿车后地板的生产效率，同时能够对板料进行限位，避免板料受压前位置发生偏移，影响成型质量，还能够降低板料成型后反弹的概率，提高了轿车后地板成型后的质量。

The present invention discloses a drawing die structure for a rear floor of a car, and relates to the technical field of drawing dies, including an upper die mechanism, a pressure edge mechanism and a lower die mechanism, wherein the upper die mechanism is located above the lower die mechanism, the pressure edge mechanism is located at the top of the lower die mechanism, the upper die mechanism includes an upper die seat, a plurality of buffer grooves are provided at the bottom of the upper die seat, the pressure edge mechanism includes a pressure edge ring, the pressure edge ring is used to press the sheet material to prevent wrinkling and cracking, a plurality of buffer convex molds are provided at the top of the pressure edge ring, the buffer convex molds are used to cooperate with the buffer grooves to form a buffer zone on the sheet material, and the lower die mechanism includes a lower die seat. The present invention improves the production efficiency of the rear floor of the car, and can limit the sheet material to avoid the position of the sheet material being offset before being pressed, which affects the molding quality, and can also reduce the probability of rebound of the sheet material after molding, thereby improving the quality of the rear floor of the car after molding.

Description

Car rear floor drawing die structure
Technical Field
The invention relates to the technical field of drawing dies, in particular to a drawing die structure for a rear floor of a car.
Background
The drawing die structure of the rear floor of the car is an important component part in the automobile manufacturing, the design of the drawing die structure directly relates to the quality and the material utilization rate of a rear floor product, and the drawing die structure is used for manufacturing the rear floor of the car and mainly comprises an upper die mechanism and a lower die mechanism, and the rear floor of the car is obtained by matching and molding a male die and a female die, so that the integrity of the rear floor of the car is strong;
The patent document with the publication number of CN211539138U discloses a drawing die structure for a rear floor of a car, wherein a lower die base component comprises a lower die base, a first male die, a second male die, a guide slide plate, a pier dead block and a material ejector connected with a cylinder, wherein the first male die, the second male die, the guide slide plate and the pier dead block are arranged on the lower die base. Through the biconvex mould structure, the sheet size is reduced, the material utilization rate is improved, and meanwhile, the quality defect of a product generated by the flow of the sheet in the drawing process is eliminated, although the sheet size is reduced, the material utilization rate is improved, and meanwhile, the quality defect of the product generated by the flow of the sheet in the drawing process is eliminated, the floor is easy to rebound after a formed car, the floor is deformed after the car, meanwhile, a corresponding limiting mechanism is absent, manual alignment is required in the process of placing the sheet, the production efficiency is reduced, and in the process of moving down an upper die holder, the sheet possibly deviates in position, and the forming quality is influenced.
Disclosure of Invention
The invention mainly aims to provide a drawing die structure for a rear floor of a car, which can effectively solve the technical problems of the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The utility model provides a floor drawing die structure behind car, includes mould mechanism, blank holder mechanism and lower mould mechanism, mould mechanism is located the top of lower mould mechanism on, the blank holder mechanism is located the top of lower mould mechanism, mould mechanism includes the upper die base, a plurality of buffer slots have been seted up to the bottom of upper die base, the blank holder mechanism includes the blank holder, the blank holder is used for compressing tightly the sheet material, prevents wrinkling and fracture, the top of blank holder is provided with a plurality of buffer terrace dies, buffer terrace dies are used for cooperating the buffer slot and form the buffer zone on the sheet material, lower mould mechanism includes the die holder;
Limiting mechanisms are arranged at the two sides and the front end and the rear end of the blank holder, the limiting mechanisms are used for positioning the plate, a re-pressing mechanism is arranged at the top of the upper die holder and used for pressing the upper die holder in the drawing process, and the stress area of the upper die holder is increased.
Specifically, the stress area of the upper die holder is increased, the plate is further guaranteed to be subjected to uniform pressure, the plate is blocked by the buffering male die in the flowing process, the flowing speed of the plate is reduced, the plate is prevented from being too fast in flowing speed, the area with large molding surface depth of the plate is prevented from being broken and damaged, meanwhile, a buffering area is formed on the plate through the buffering male die in cooperation with the buffering groove, and the floor of the formed car is prevented from being deformed.
As a further scheme of the invention, the upper die mechanism further comprises a first female die and a second female die which are arranged at the bottom of the upper die holder, and upper die guide plates are fixedly arranged at two sides of the bottom of the upper die holder.
As a further scheme of the invention, the lower die mechanism further comprises a first male die and a second male die which are fixedly arranged at the top of the lower die holder, and guide sliding plates are fixedly arranged at the top of the lower die holder near four corners.
Specifically, the die assembly precision of the die is ensured, and meanwhile, the guide slide plate bears the lateral force in the drawing process, so that the die is prevented from being damaged.
As a further scheme of the invention, the lower die mechanism further comprises a plurality of upsetting blocks which are fixedly arranged at the top of the lower die holder and positioned at the periphery of the first male die and the second male die.
Specifically, the die clamping precision of the die is ensured, and meanwhile, the die is prevented from being deformed or broken in the die clamping process.
As a further scheme of the invention, the lower die mechanism further comprises four lifters penetrating through the top of the lower die holder.
Specifically, the ejector is conveniently driven by the air cylinder, the rear floor of the car is conveniently ejected out of the drawing die structure, and the picking-up is convenient.
As a further scheme of the invention, the edge pressing mechanism further comprises a first die avoiding groove and a second die avoiding groove which are arranged on the edge pressing ring in a penetrating mode, and two edge pressing guide plates are fixedly arranged at the bottom of the edge pressing ring close to two sides.
Specifically, the correct positioning and flowing of the plate in the die are ensured, and the blank holder compresses the plate in other areas to prevent the plate from wrinkling and cracking.
As a further scheme of the invention, the limiting mechanism comprises a limiting plate, bases are arranged on two sides of the limiting plate, and a top sliding plate is arranged on the inner side of the limiting plate.
As a further scheme of the invention, the limiting plate is movably connected with the base through the rotating shaft and the torsion spring, the base is fixedly connected with the periphery of the blank holder, and the inner side of the top sliding plate is fixedly connected with the periphery of the upper die holder and is inclined at the upper end and the outer side of the top sliding plate is inclined at the lower end.
Specifically, the plate is convenient to place and align fast, and the limiting mechanism is prevented from interfering the upper die mechanism and the lower die mechanism to complete the die assembly process while limiting.
As a further scheme of the invention, the re-pressing mechanism comprises two movable frames, two pressing rollers are movably arranged between the two movable frames near the top ends, and a supporting frame plate is arranged below the movable frames.
As a further scheme of the invention, the shaft of the movable frame is movably connected with the side surface of the upper die holder through a bearing, and the supporting frame plate is fixedly connected with the side surface of the lower die holder.
Specifically, the stress area of the upper die holder is increased, so that the plate is guaranteed to be subjected to uniform pressure, the forming quality is improved, and the probability of rebound after the plate is formed is reduced.
The invention has the beneficial effects that:
According to the invention, the limiting mechanism is arranged, in the drawing process, the plate is positioned at the top of the blank holder, the plate is limited by the limiting plate, so that the plate can be conveniently and quickly placed and aligned, the production efficiency is improved, when the upper die holder descends, the limiting plate is extruded by the top sliding plate, the limiting plate is gradually unfolded, and the limiting mechanism is prevented from interfering the upper die mechanism and the lower die mechanism to complete the die assembly process while limiting is achieved;
according to the invention, by arranging the re-pressing mechanism, in the drawing process, the supporting frame plate supports against the bottom of the movable frame along with the downward movement of the upper die mechanism, the included angle of the movable frame is gradually increased, the press roller is driven to press the upper die holder, the stress area of the upper die holder is increased, the plate is further ensured to be uniformly pressed, the forming quality is improved, and the rebound probability of the plate after being formed is reduced;
3. According to the invention, the buffer groove and the buffer male die are arranged, so that the flow speed of the plate is reduced due to the blocking of the buffer male die in the flow process of the plate, the situation that the plate is too fast in flow speed and the area with large molding surface depth is broken and damaged is avoided, meanwhile, the buffer area is formed on the plate through the matching of the buffer male die and the buffer groove, when the plate is molded and demolded, if the plate rebounds, the buffer area can be used for providing buffer, and the deformation of the floor after the molded car is avoided.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a drawing die for a rear floor of a car;
FIG. 2 is a split view of the overall structure of a drawing die structure for the rear floor of a car;
FIG. 3 is a schematic diagram of a lower die mechanism in a rear floor drawing die structure of a sedan in accordance with the present invention;
FIG. 4 is a schematic diagram of an upper die mechanism in a car rear floor drawing die structure;
FIG. 5 is a bottom view of the upper die mechanism in the rear floor drawing die structure of the sedan of the invention;
FIG. 6 is a schematic diagram of a blank pressing mechanism in a drawing die structure of a rear floor of a car;
FIG. 7 is a schematic diagram of a back pressing mechanism in a drawing die structure for a rear floor of a car;
FIG. 8 is a schematic diagram of a limiting mechanism in a rear floor drawing die structure of a sedan in accordance with the present invention;
Fig. 9 is a side view of a stop mechanism in a rear floor drawing die structure of a sedan in accordance with the present invention.
In the figure:
1. the device comprises an upper die mechanism, an upper die holder, a first female die, a second female die, an upper die guide plate, a buffer groove and a buffer groove, wherein the upper die mechanism comprises a die holder and a die;
2. edge pressing mechanism; 201, a blank holder, 202, a first die avoiding groove, 203, a second die avoiding groove, 204, a blank holder guide plate, 205, and a buffer male die;
3. a lower die mechanism; 301, a lower die holder, 302, a first male die, 303, a second male die, 304, a upsetting block, 305, a liftout device, 306, and a guide slide plate;
4.a limiting mechanism; 401, limiting plates, 402, a base, 403 and a top sliding plate;
5. The device comprises a re-pressing mechanism, 501, a movable frame, 502, a pressing roller, 503 and a supporting frame plate.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-9, referring to fig. 1,2, 5 and 6, the drawing die structure for the rear floor of a car includes an upper die mechanism 1, a blank holder mechanism 2 and a lower die mechanism 3, wherein the upper die mechanism 1 is located above the lower die mechanism 3, the blank holder mechanism 2 is located at the top of the lower die mechanism 3, the upper die mechanism 1 includes an upper die holder 101, a plurality of buffer slots 105 are formed at the bottom of the upper die holder 101, the blank holder mechanism 2 includes a blank holder 201, the blank holder 201 is used for pressing a plate material and preventing wrinkling and cracking, a plurality of buffer punches 205 are arranged at the top of the blank holder 201, the buffer punches 205 are used for forming a buffer zone on the plate material in cooperation with the buffer slots 105, and the lower die mechanism 3 includes a lower die holder 301;
both sides and front and back ends of the blank holder 201 are provided with limiting mechanisms 4, the limiting mechanisms 4 are used for positioning the plate, the top of the upper die holder 101 is provided with a re-pressing mechanism 5, and the re-pressing mechanism 5 is used for pressing the upper die holder 101 in the drawing process, so that the stress area of the upper die holder 101 is increased.
Specifically, place the sheet metal to the top of blank holder 201, and carry out spacing to the sheet metal through stop gear 4, avoid the sheet metal to receive the skew in position before the pressure, blank holder 201 receives the pressure jack-up that equipment provided, this moment blank holder 201 takes place relative movement with die holder 301, upper die base 101 and blank holder 201 cooperate and compress tightly, the rear floor profile that this in-process set up on blank holder 201 begins the shaping, afterwards upper die base 101 moves with blank holder 201 together, take place relative movement with die holder 301, the sheet metal begins flow shaping under the compaction effect of blank holder 201 and upper die base 101, and in the in-process of sheet metal shaping, back press mechanism 5 compresses tightly upper die base 101, increase the atress area of upper die base 101, and then guarantee that the sheet metal receives even pressure, the in-process of sheet metal flows receives the barrier of buffer punch 205, reduce the velocity of flow of sheet metal, avoid the sheet metal to flow too fast, lead to the sheet metal to take place fracture and damage in the great region of profile, simultaneously, through buffer punch 205 cooperation buffer 105, form the buffer zone on the sheet metal, when shaping, if the sheet metal takes place rebound, can take place through the buffer zone, after-forming is avoided the floor shaping.
Referring to fig. 5, the upper die mechanism 1 further includes a first die 102 and a second die 103 disposed at the bottom of the upper die holder 101, and an upper die guide plate 104 is fixedly mounted on two sides of the bottom of the upper die holder 101.
Referring to fig. 2 and 3, the lower die mechanism 3 further includes a first punch 302 and a second punch 303 fixedly mounted on the top of the lower die holder 301, and guide sliding plates 306 are fixedly mounted on the top of the lower die holder 301 near four corners.
Specifically, in the process of drawing the floor behind the car, the lower die mechanism 3 is fixed, the upper die mechanism 1 moves downwards, when the upper die holder 101 is in contact with a plate material in the downward movement process, the stamping forming is started, the first female die 102 is matched with the first male die 302 to form the shape of a spare tire groove in the drawing process, the second female die 103 is matched with the second male die 303 to form the specific shape of a flange surface in the drawing process, the guide slide plate 306 is matched with the upper die guide plate 104 to guide the relative movement between the upper die holder 101 and the lower die holder 301, so that the die clamping precision of the die is ensured, and meanwhile, the guide slide plate 306 bears the lateral force in the drawing process to protect the die from being damaged.
Referring to fig. 2 and 3, the lower die mechanism 3 further includes a plurality of upsetting blocks 304 fixedly mounted on top of the lower die base 301 and located at the periphery of the first punch 302 and the second punch 303.
Specifically, during the drawing process, the support is provided by the pier blocks 304, so that the die clamping precision of the die is ensured, and meanwhile, the die is prevented from deforming or cracking during the die clamping process.
Referring to fig. 2 and 3, the lower die mechanism 3 further includes four lifters 305 penetrating the top of the lower die base 301.
Specifically, in the drawing process, the ejector 305 is connected with the air cylinder, and after drawing is finished, the ejector 305 is conveniently driven by the air cylinder, so that the rear floor of the car is ejected from the drawing die structure, and the picking-up is convenient.
Referring to fig. 2 and 6, the edge pressing mechanism 2 further includes a first die avoiding groove 202 and a second die avoiding groove 203 penetrating through the edge pressing ring 201, and two edge pressing guide plates 204 are fixedly installed on two sides of the bottom of the edge pressing ring 201.
Specifically, in the drawing process, the blank holder 201 is matched with the upper die holder 101 and the lower die holder 301 through the blank holder guide plate 204, so that the die assembly action is realized, the correct positioning and flow of the plate in the die are ensured, the plate corresponding to the areas of the first punch 302 and the second punch 303 passes through the first die avoiding groove 202 and the second die avoiding groove 203 to form corresponding grooves, the blank holder 201 compresses the plate in other areas, and the wrinkling and cracking of the plate are prevented.
Referring to fig. 2, 8 and 9, the limiting mechanism 4 includes a limiting plate 401, two sides of the limiting plate 401 are respectively provided with a base 402, and a top sliding plate 403 is disposed on the inner side of the limiting plate 401.
Referring to fig. 2, 8 and 9, the limiting plate 401 is movably connected with the base 402 through a rotating shaft and a torsion spring, the base 402 is fixedly connected with the periphery of the blank holder 201, and the top sliding plate 403 is fixedly connected with the periphery of the upper die holder 101, and is disposed at an inner side of the limiting plate 401 and at an outer side of the top sliding plate 403.
Specifically, in the drawing process, the plate is located at the top of the blank holder 201, the plate is limited by the limiting plate 401, so that the plate is convenient to be placed and aligned quickly, when the upper die holder 101 descends, the limiting plate 401 is extruded by the top sliding plate 403, the limiting plate 401 is gradually unfolded, and when limiting is achieved, the limiting mechanism 4 is prevented from interfering the upper die mechanism 1 and the lower die mechanism 3 to complete the die assembly process.
Referring to fig. 2 and 7, the re-pressing mechanism 5 includes two movable frames 501, two pressing rollers 502 are movably mounted between the two movable frames 501 near the top ends, and a supporting frame plate 503 is disposed below the movable frames 501.
Referring to fig. 2 and 7, the shaft of the movable frame 501 is movably connected to the side of the upper die holder 101 through a bearing, and the supporting frame plate 503 is fixedly connected to the side of the lower die holder 301.
Specifically, in the drawing process, along with the downward movement of the upper die mechanism 1, the supporting frame plate 503 supports against the bottom of the movable frame 501, the included angle of the movable frame 501 gradually increases, the press roller 502 is driven to press the upper die holder 101, the stress area of the upper die holder 101 is increased, further, the plate is ensured to be subjected to uniform pressure, the forming quality is improved, and the probability of rebound after the plate is formed is reduced.
Working principle:
The plate is placed on the top of the blank holder 201, the cylinder is connected with the ejector 305, the plate is limited by the limiting plate 401, the plate is convenient to be placed quickly and aligned, the production efficiency is improved, the blank holder 201 is jacked up by the pressure provided by the equipment, at the moment, the blank holder 201 and the lower die holder 301 move relatively, the upper die holder 101 and the blank holder 201 are tightly matched, the rear floor profile arranged on the blank holder 201 in the process starts to be formed, then the upper die holder 101 and the blank holder 201 move together and move relatively with the lower die holder 301, the plate starts to flow and form under the tightly pressing action of the blank holder 201 and the upper die holder 101, when the upper die holder 101 descends, the limiting plate 401 is gradually unfolded by the extrusion limiting plate 403, the limiting mechanism 4 is prevented from interfering the upper die mechanism 1 and the lower die mechanism 3 to complete the die closing process while the limiting is performed, and in the process of forming the plate, with the downward movement of the upper die mechanism 1, the supporting frame plate 503 supports against the bottom of the movable frame 501, the included angle of the movable frame 501 gradually increases, the press roller 502 is driven to press the upper die holder 101, the stress area of the upper die holder 101 is increased, the plate is further ensured to be uniformly pressed, the forming quality is improved, the probability of rebound after the plate is formed is reduced, the plate is blocked by the buffer male die 205 in the flowing process, the flowing speed of the plate is reduced, the plate is prevented from being excessively fast, the region with larger forming surface depth of the plate is prevented from being broken and damaged, meanwhile, a buffer area is formed on the plate through the buffer male die 205 in cooperation with the buffer groove 105, if the plate is rebounded during the forming and demoulding of the plate, the buffer area is provided for buffering, the formed rear floor of the car is prevented from being deformed, after the drawing of the rear floor of the car is completed, the cylinder is started to drive the ejector 305, the rear floor of the car is ejected from the drawing die structure, the picking up of the workpiece is convenient.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1.一种轿车后地板拉延模具结构，其特征在于：包括上模机构（1）、压边机构（2）和下模机构（3），所述上模机构（1）位于下模机构（3）的上方，所述压边机构（2）位于下模机构（3）的顶部，所述上模机构（1）包括上模座（101），所述上模座（101）的底部开设有若干道缓冲槽（105），所述压边机构（2）包括压边圈（201），压边圈（201）用于压紧板料、防止起皱和开裂，所述压边圈（201）的顶部设置有若干个缓冲凸模（205），缓冲凸模（205）用于配合缓冲槽（105）在板料上形成缓冲区，所述下模机构（3）包括下模座（301）；1. A car rear floor drawing die structure, characterized in that it comprises an upper die mechanism (1), a side clamping mechanism (2) and a lower die mechanism (3), wherein the upper die mechanism (1) is located above the lower die mechanism (3), the side clamping mechanism (2) is located on the top of the lower die mechanism (3), the upper die mechanism (1) comprises an upper die seat (101), a plurality of buffer grooves (105) are provided at the bottom of the upper die seat (101), the side clamping mechanism (2) comprises a side clamping ring (201), the side clamping ring (201) is used to clamp a sheet material to prevent wrinkling and cracking, a plurality of buffer convex molds (205) are provided at the top of the side clamping ring (201), the buffer convex molds (205) are used to cooperate with the buffer grooves (105) to form a buffer zone on the sheet material, and the lower die mechanism (3) comprises a lower die seat (301); 所述压边圈（201）的两侧和前后端均设置有限位机构（4），限位机构（4）用于对板料进行定位，所述上模座（101）的顶部设置有复压机构（5），复压机构（5）用于在拉延过程中按压上模座（101），增大上模座（101）的受力面积；Limiting mechanisms (4) are provided on both sides and the front and rear ends of the blank holder (201), and the limiting mechanisms (4) are used to position the sheet metal. A re-pressing mechanism (5) is provided on the top of the upper die seat (101), and the re-pressing mechanism (5) is used to press the upper die seat (101) during the drawing process to increase the force-bearing area of the upper die seat (101); 所述限位机构（4）包括限位板（401），限位板（401）的两侧均设置有底座（402），限位板（401）的内侧靠上设置有顶滑板（403），所述限位板（401）通过转轴和扭簧与底座（402）活动连接，底座（402）与压边圈（201）的外周固定连接，顶滑板（403）与上模座（101）的外周固定连接，限位板（401）的内侧靠上端和顶滑板（403）的外侧靠下端均呈斜面设置；The limiting mechanism (4) comprises a limiting plate (401), bases (402) are arranged on both sides of the limiting plate (401), a top slide plate (403) is arranged on the inner side of the limiting plate (401), the limiting plate (401) is movably connected to the base (402) via a rotating shaft and a torsion spring, the base (402) is fixedly connected to the outer periphery of the pressure ring (201), the top slide plate (403) is fixedly connected to the outer periphery of the upper die seat (101), and the inner side of the limiting plate (401) and the outer side of the top slide plate (403) are both arranged in an inclined surface; 所述复压机构（5）包括两个活动架（501），两个活动架（501）之间靠顶端活动安装有两根压辊（502），活动架（501）的下方设置有抵架板（503）；The re-pressing mechanism (5) comprises two movable frames (501), two pressing rollers (502) are movably mounted between the two movable frames (501) at the top ends, and a support plate (503) is arranged below the movable frames (501); 所述活动架（501）的轴通过轴承与上模座（101）的侧面活动连接，抵架板（503）与下模座（301）的侧面固定连接。The shaft of the movable frame (501) is movably connected to the side of the upper die seat (101) via a bearing, and the support plate (503) is fixedly connected to the side of the lower die seat (301). 2.根据权利要求1所述的一种轿车后地板拉延模具结构，其特征在于：所述上模机构（1）还包括开设在上模座（101）底部的第一凹模（102）和第二凹模（103），上模座（101）的底部靠两侧均固定安装有上模导板（104）。2. A car rear floor drawing die structure according to claim 1, characterized in that: the upper die mechanism (1) also includes a first die (102) and a second die (103) opened at the bottom of the upper die base (101), and upper die guide plates (104) are fixedly installed on both sides of the bottom of the upper die base (101). 3.根据权利要求1所述的一种轿车后地板拉延模具结构，其特征在于：所述下模机构（3）还包括固定安装在下模座（301）顶部的第一凸模（302）和第二凸模（303），下模座（301）的顶部靠四角均固定安装有导滑板（306）。3. A car rear floor drawing die structure according to claim 1, characterized in that: the lower die mechanism (3) also includes a first punch (302) and a second punch (303) fixedly mounted on the top of the lower die base (301), and guide slide plates (306) are fixedly mounted on the top of the lower die base (301) near the four corners. 4.根据权利要求3所述的一种轿车后地板拉延模具结构，其特征在于：所述下模机构（3）还包括固定安装在下模座（301）顶部且位于第一凸模（302）和第二凸模（303）周边的若干个墩死块（304）。4. A car rear floor drawing die structure according to claim 3, characterized in that: the lower die mechanism (3) further comprises a plurality of dead blocks (304) fixedly mounted on the top of the lower die base (301) and located around the first punch (302) and the second punch (303). 5.根据权利要求1所述的一种轿车后地板拉延模具结构，其特征在于：所述下模机构（3）还包括贯穿下模座（301）顶部的四个顶料器（305）。5. A car rear floor drawing die structure according to claim 1, characterized in that: the lower die mechanism (3) further comprises four ejectors (305) penetrating the top of the lower die base (301). 6.根据权利要求1所述的一种轿车后地板拉延模具结构，其特征在于：所述压边机构（2）还包括贯穿设置在压边圈（201）上的第一避模槽（202）和第二避模槽（203），压边圈（201）的底部靠两侧均固定安装有两块压边导板（204）。6. A car rear floor drawing die structure according to claim 1, characterized in that: the edge pressing mechanism (2) also includes a first die avoiding groove (202) and a second die avoiding groove (203) penetrating the edge pressing ring (201), and two edge pressing guide plates (204) are fixedly installed on both sides of the bottom of the edge pressing ring (201).
CN202510005771.8A 2025-01-03 2025-01-03 Car rear floor drawing die structure Active CN119407005B (en)

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CN216501805U (en) * 2021-10-27 2022-05-13 江苏华强模具科技有限公司 Blanking die with variable locator
CN217166014U (en) * 2021-04-29 2022-08-12 南京天河汽车零部件股份有限公司 Left front door lower hinge reinforcing plate forming mechanism
CN219944351U (en) * 2023-06-01 2023-11-03 江苏锡隆冶金设备制造有限公司 Automatic stamping forming equipment for side door whole plate of railway wagon

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CN110695179A (en) * 2019-10-30 2020-01-17 一汽轿车股份有限公司 A drawing die structure for the rear floor of a car
CN217166014U (en) * 2021-04-29 2022-08-12 南京天河汽车零部件股份有限公司 Left front door lower hinge reinforcing plate forming mechanism
CN216501805U (en) * 2021-10-27 2022-05-13 江苏华强模具科技有限公司 Blanking die with variable locator
CN219944351U (en) * 2023-06-01 2023-11-03 江苏锡隆冶金设备制造有限公司 Automatic stamping forming equipment for side door whole plate of railway wagon

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