Special-shaped section full-profile integrated flanging forming die and method for pallet parts

Abstract

The present invention relates to a special-shaped section full-profile integrated flanging forming die and method for pallet parts. The flanging forming die comprises a first die and a second die. In the present invention, an original machining solution is replaced with a stamping forming solution, a flange is added at an edge of an original part, and pressed ribs are added at an arc surface, so that the axial and radial rigidity of the part is ensured after stamping. A special die for forming pallet parts is designed, so that special-shaped section full-profile integrated flanging forming of the pallet parts is realized, thereby ensuring the rigidity of the parts and improving the production efficiency.

Description

Tray part special-shaped cross-section full-contour integrated flanging forming die and forming method Technical Field

[0001] The present invention belongs to the technical field of mold forming, and in particular relates to a full-contour integrated flanging forming mold for a tray-like part with a special-shaped cross-section and a forming method. Background Art

[0002] Currently, the structure of a certain vehicle's tray parts uses a single arc surface structure, as shown in Figure 1. The forming solution for this structure is to use steel pipe material for turning. After turning, the steel pipe is cut into two parts using wire cutting. After cutting the required groove profile, the steel pipe is then machined separately.

[0003] The existing solution for pallet parts is to use 38CrSi round tube materials for processing and forming. The process includes turning, wire cutting, grinding and other steps. The process is long and inefficient. In addition, because the wall thickness of the parts is thin, the steel tube is cut by wire cutting after turning. The internal stress is released, and the parts will deform to both sides and undergo a certain amount of axial torsional deformation, which cannot be effectively controlled.

[0004] Summary of the Invention

[0005] The present invention provides a tray-like part special-shaped cross-section full-contour integrated flanging forming die and forming method, and aims to solve the problem of deformation of tray-like parts after processing.

[0006] In order to solve the above technical problems, the present invention provides a tray-like part special-shaped cross-section full-contour integrated flanging forming die, which is characterized by comprising a first die and a second die;

[0007] The first mold is mainly composed of a first lower mold frame 1, an air cushion plate 2, a ribbed and flanging punch 3, a first upper mold frame 5 and a ribbed and flanging die 6; wherein the air cushion plate 2 and the ribbed and flanging punch 3 are installed and placed inside the first lower mold frame 1, the ribbed and flanging punch 3 is fixedly connected to the first lower mold frame 1, the air cushion plate 2 is sleeved outside the ribbed and flanging punch 3, and the air cushion plate 2 can slide up and down along the slide in the first lower mold frame 1. When the air cushion plate 2 is raised, it is flush with the highest point of the ribbed and flanging punch 3, forming a fixed plane to facilitate the placement of the unfolded part material; the ribbed and flanging die 6 is fixed on the first upper mold frame 5, and is used to cooperate with the ribbed and flanging punch 3 during stamping to achieve the stamping of V-shaped ribs and lateral flanging of pallet-type parts;

[0008] The second mold is mainly composed of a second lower mold frame 7, a floating punch 8, a flanging module 9, a flaring module 10, a shaping punch 11, a second upper mold frame 13, a flanging die 14 and a shaping die 15; the floating punch 8 is installed on the left side of the second lower mold frame 7 and can slide up and down along the slide, the flanging module 9 and the flaring module 10 are respectively fixed on the second lower mold frame 7 at both ends of the floating punch 8, the shaping punch 11 is fixed on the right side of the second lower mold frame, and the limit block 12 is fixed on the second lower mold frame 7, located at one end of the shaping punch 11, for axially limiting the part; the flanging die 14 and the shaping die 15 are rigidly fixed on the second upper mold frame 13, and are used to cooperate with the floating punch 8 and the shaping punch 11 during stamping to achieve the end flanging and final shaping correction of the V-shaped ribs of tray-type parts.

[0009] A method for forming a full-contour integrated flanging of a special-shaped cross-section of a tray-like part, characterized by comprising the following steps:

[0010] Step 1: Cut the unfolded part and place it on the air cushion plate 2 on the first mold. The unfolded material must be close to the limit pin 4;

[0011] Step 2: The beading and flanging die 6 is pressed down by the first upper die frame 5. After contacting the air cushion plate 2, it is pressed against the unfolded part material and continues to be pressed down until it is tightly fitted with the beading and flanging punch 3, so as to realize the arc pressing, bead pressing and lateral contour flanging of the part.

[0012] Step 3: The beading and flanging die 6 is lifted, the air cushion plate 2 rises, and the part is ejected from the beading and flanging punch 3 to complete the unloading;

[0013] Step 4: Place the semi-finished part formed in step 3 on the floating punch 8 and use the formed V-shaped ribs to position it. At this time, the floating punch 8 is in the raised position and is flush with the upper edges of the flanging module 9 and the flaring module 10.

[0014] Step 5: The flanging die 14 and the shaping die 15 are pressed down at the same time under the drive of the second upper die frame 13. When they contact the floating punch 8, they are pressed down together. At this time, the flanging die 14 pressed down works together with the flanging module 9 and the flaring module 10 to complete the flanging of the two ends of the part.

[0015] Step 6: The flanging die 14 and the shaping die 15 are lifted, and the floating punch 8 rises to lift the part and take it out.

[0016] Step 7: Place the semi-finished part formed in step 6 on the shaping punch 11 and position it using the formed V-shaped ribs and limit blocks 12;

[0017] Step 8: The flanging die 14 and the shaping die 15 are pressed down simultaneously until the shaping punch 11, the part and the shaping die 15 are tightly fitted and reach the specified pressure;

[0018] Step 9: Lift the flanging die 14 and the shaping die 15, remove the part from the shaping punch 11, complete the part shaping correction, and realize the integrated flanging of the special-shaped cross-section of the tray-like parts.

[0019] Beneficial Effects: This invention uses stamping to replace the traditional mechanical method, adding flanges to the edges of the original part and ribs to the arc surface to ensure the axial and radial rigidity of the stamped part. A specialized mold for forming tray-like parts has been designed, achieving full-contour, integrated flange forming of special-shaped cross-sections of tray-like parts, ensuring part rigidity and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Pallet parts structure diagram

[0021] Figure 2: Design of the punch structure of the first mold

[0022] Figure 3 Design of the concave mold structure of the first mold

[0023] Figure 4: Design of the second die's punch structure

[0024] Figure 5 is the design diagram of the die structure of the second mold. DETAILED DESCRIPTION

[0025] In order to make the purpose, content and advantages of the present invention more clear, the specific embodiments of the present invention are further described in detail below.

[0026] The present invention proposes a full-contour integrated flanging forming die for a special-shaped cross-section of a tray-like part, comprising a first die and a second die, wherein the second die further comprises a flanging forming die and a shaping and correction die.

[0027] As shown in Figures 2 and 3, the first mold is mainly composed of a first lower mold frame 1, an air cushion plate 2, a ribbed and flanging punch 3, a limiting pin 4, a first upper mold frame 5 and a ribbed and flanging die 6; wherein the air cushion plate 2 and the ribbed and flanging punch 3 are installed and placed inside the first lower mold frame 1, the ribbed and flanging punch 3 is fixedly connected to the first lower mold frame 1, the air cushion plate 2 is sleeved outside the ribbed and flanging punch 3, and the air cushion plate 2 can slide up and down along the slide in the first lower mold frame 1. When the air cushion plate 2 is raised, it is flush with the highest point of the ribbed and flanging punch 3 to form a fixed plane to facilitate the placement of the unfolded part material; the limiting pin 4 is installed on the air cushion plate 2 to limit the position of the unfolded part material when it is placed; the ribbed and flanging die 6 is fixed on the first upper mold frame 5, and is used to cooperate with the ribbed and flanging punch 3 during stamping to achieve the stamping of V-shaped ribs and lateral flanging of pallet-type parts;

[0028] As shown in Figures 4 and 5, the second mold is mainly composed of a second lower mold base 7, a floating punch 8, a flanging module 9, a flaring module 10, a shaping punch 11, a limit block 12, a second upper mold base 13, a flanging die 14 and a shaping die 15;

[0029] The floating punch 8 is installed on the left side of the second lower die frame 7 and can slide up and down along the slide. The flanging module 9 and the flaring module 10 are respectively fixed on the second lower die frame 7 at both ends of the floating punch 8. The shaping punch 11 is fixed on the right side of the second lower die frame. The limit block 12 is fixed on the second lower die frame 7 and is located at one end of the shaping punch 11 for axial limitation of the part.

[0030] When the floating punch 8 is raised, its arc surface is parallel to the upper edges of the flanging module 9 and the flaring module 10. The semi-finished product formed by the first die can now be placed on it. After being pressed down, the flanging modules 9 and flaring modules 10 achieve the flanging of the ends of the part. The flanging die 14 and the shaping die 15 are rigidly fixed to the second upper die frame 13. During stamping, they cooperate with the floating punch 8 and the shaping punch 11, respectively, to achieve the flanging of the ends of the V-shaped ribs of the tray-like parts and the final shaping and correction.

[0031] Another object of the present invention is to use the above-mentioned device to provide a method for realizing the integrated flanging forming of the full contour of the special-shaped cross-section of pallet-like parts.

[0032] In order to achieve this purpose, the present invention adopts the following technical solution:

[0033] A method for forming a pallet part with a special-shaped cross-section and full-contour integrated flanging, comprising:

[0034] Step 1: Cut the unfolded part and place it on the air cushion plate 2 on the first mold. The unfolded material must be close to the limit pin 4;

[0035] Step 2: The embossing and flanging die 6 is pressed down by the first upper die frame 5. After contacting the air cushion plate 2, it is pressed tightly against the unfolded part material and continues to be pressed down until it is tightly fitted with the embossing and flanging punch 3, so as to realize the arc pressing, embossing and lateral contour flanging of the part.

[0036] Step 3: The embossing and flanging die 6 is lifted, the air cushion plate 2 rises, and the parts are ejected from the embossing and flanging punch 3 to complete the unloading.

[0037] Step 4: Place the semi-finished part formed in step 3 on the floating punch 8 and use the formed V-shaped ribs for positioning. At this time, the floating punch 8 is in the raised position and is flush with the upper edges of the flanging module 9 and the flaring module 10.

[0038] Step 5: Driven by the second upper die frame 13, the flanging die 14 and the shaping die 15 are simultaneously pressed downward. When they contact the floating punch 8, they are also pressed downward together. At this time, the downward-pressing flanging die 14 works together with the flanging module 9 and the flaring module 10 to complete the flanging of the part's ends. When the floating punch 8 and the flanging die 14 are pressed down until they are tightly fitted, the dimensional correction of the part's lateral contour flanging is complete.

[0039] Step 6: The flanging die 14 and the shaping die 15 are lifted, and the floating punch 8 rises to lift the part and take it out.

[0040] Step 7: Place the semi-finished part formed in step 6 on the shaping punch 11 and use the formed V-shaped ribs and limit blocks 12 to position it.

[0041] Step 8: The flanging die 14 and the shaping die 15 are pressed down simultaneously until the shaping punch 11, the part and the shaping die 15 are tightly fitted and reach the specified pressure.

[0042] Step 9: Lift the flanging die 14 and the shaping die 15, remove the part from the shaping punch 11, complete the part shaping correction, and realize the integrated flanging of the special-shaped cross-section of the tray-like parts.

[0043] The present invention manufactures an integrated flanged pallet part with good rigidity and reasonable spatial shape in one go through a three-step process, which can improve production efficiency and reduce production costs; the flanging and shaping correction of the part can be carried out simultaneously, with high molding efficiency, and the entire molding process can be completed within 5 minutes. The part molding rigidity is good and the consistency is high.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A forming die for integral flanging of the special-shaped cross-section of a tray-like part with a full profile, characterized in that: it includes a first die and a second die; The first die is mainly composed of a first lower die holder 1, an air cushion plate 2, a ribbing and flanging punch 3, a first upper die holder 5, and a ribbing and flanging die 6; Among them, the air cushion plate 2 and the ribbing and flanging punch 3 are installed and placed inside the first lower die holder 1. The ribbing and flanging punch 3 is fixedly connected to the first lower die holder 1. The air cushion plate 2 is sleeved outside the ribbing and flanging punch 3. The air cushion plate 2 can slide up and down in the first lower die holder 1 along the slideway. When the air cushion plate 2 rises, it is flush with the highest point of the ribbing and flanging punch 3, forming a fixed plane to facilitate the placement of the blank of the part; The ribbing and flanging die 6 is fixed on the first upper die holder 5 and is used to cooperate with the ribbing and flanging punch 3 during stamping to realize the stamping of the V-shaped rib of the tray-like part and the lateral flanging; The second die is mainly composed of a second lower die holder 7, a floating punch 8, a flanging module 9, a flaring module 10, a sizing punch 11, a second upper die holder 13, a flanging die 14, and a sizing die 15; The floating punch 8 is installed and placed on the left side of the second lower die holder 7 and can slide up and down along the slideway. The flanging module 9 and the flaring module 10 are respectively fixed on the second lower die holder 7 at both ends of the floating punch 8. The sizing punch 11 is fixed on the right side of the second lower die holder. The limit block 12 is fixed on the second lower die holder 7 and is located at one end of the sizing punch 11 for axially limiting the part; The flanging die 14 and the sizing die 15 are rigidly fixed on the second upper die holder 13 and are respectively used to cooperate with the floating punch 8 and the sizing punch 11 during stamping to realize the end flanging and final sizing and correction of the V-shaped rib of the tray-like part.

2. A forming die for integral flanging of the special-shaped cross-section of a tray-like part with a full profile according to claim 1, characterized in that: A limit pin 4 is installed on the air cushion plate 2 for limiting the blank of the part when it is placed.

3. A forming die for integral flanging of the special-shaped cross-section of a tray-like part with a full profile according to claim 1, characterized in that: When the floating punch 8 rises, its arc surface is parallel to the upper edges of the flanging module 9 and the flaring module 10. At this time, the semi-finished product formed by the first die can be placed on it. After pressing down, the flanging module 9 and the flaring module 10 realize the flanging of both ends of the part.

4. A forming method for integral flanging of the special-shaped cross-section of a tray-like part with a full profile, characterized by comprising the following steps: Step 1: Cut the blank of the part and place it on the air cushion plate 2 of the first die. The blank needs to be closely attached to the limit pin 4; Step 2: The ribbing and flanging die 6 is pressed down under the drive of the first upper die holder 5. After contacting the air cushion plate 2, it presses the air cushion plate 2 and the blank of the part tightly and continues to press down until it is in close fit with the ribbing and flanging punch 3, realizing the pressing of the arc, ribbing, and lateral profile flanging of the part; Step 3: The ribbing and flanging die 6 is lifted, and the air cushion plate 2 rises to eject the part from the ribbing and flanging punch 3 to complete the unloading; ​ Step 4: Place the semi-finished part after forming in Step 3 on the floating punch 8, and use the formed V-shaped rib for positioning. At this time, the floating punch 8 is in the rising position and is flush with the upper edges of the flanging module 9 and the flaring module 10; Step 5: The flanging female die 14 and the sizing female die 15 are simultaneously pressed down under the drive of the second upper die holder 13. When they contact the floating punch 8, they press it down together. At this time, the pressed-down flanging female die 14 and the flanging module 9 and the flaring module 10 act together to complete the flanging of both ends of the part; Step 6: The flanging female die 14 and the sizing female die 15 are lifted, and the floating punch 8 rises to lift and take out the part. Step 7: Place the semi-finished part after forming in Step 6 on the sizing punch 11, and use the formed V-shaped rib and the limit block 12 for positioning; Step 8: The flanging female die 14 and the sizing female die 15 are simultaneously pressed down until the sizing punch 11, the part and the sizing female die 15 are in close contact and reach the specified pressure; Step 9: The flanging female die 14 and the sizing female die 15 are lifted, and the part is removed from the sizing punch 11 to complete the sizing and correction of the part, realizing the integral flanging forming of the special-shaped cross-section of the tray-like part.

5. A method for integral flanging forming of the special-shaped cross-section of a tray-like part according to claim 4, characterized in that: In Step 5, when pressed down until the floating punch 8 is in close contact with the flanging female die 14, the size correction of the lateral contour flanging of the part is completed.

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