A mold for producing car body parts

Abstract

The invention relates to the technical field of automobile body parts molds, and discloses a mold for automobile body parts production, which solves the problem that the current automobile parts production molds are not convenient to disassemble and replace, and thus cannot be suitable for processing and manufacturing workpieces of different sizes. The mold comprises a base, support columns are fixedly installed at the four corners of the base, a top plate is installed between the tops of the four support columns, a lower mold base is fixedly installed on the top of the base, a lower mold body is movably installed on the top of the lower mold base, an upper mold base is provided on the upper part of the lower mold body, an upper mold body is movably installed on the bottom of the upper mold base, and movable sleeve blocks are installed between the four corners of the upper mold base and the four support columns; the mold for automobile body parts production can be conveniently and effectively disassembled and installed, and the disassembly and installation process is simple and convenient, simple to operate, and convenient for people to use, and at the same time the mold installation is stable and reliable, and has high safety, so as to meet the use requirements of processing and manufacturing workpieces of different sizes.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle body parts moulds, in particular to a mould for producing vehicle body parts. Background Art

[0002] A mold is a tool used to shape objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. In the forming processes of punching, forming stamping, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression or injection molding of engineering plastics, rubber, ceramics and other products, it is used to make the blank become a part with a specific shape and size under the action of external force. The mold is generally divided into two parts: a movable mold and a fixed mold, or a punch and a concave mold. They can be separated or combined. When separated, the blank is loaded or the part is taken out. When closed, the part is separated from the blank or formed. In the process of punching, forming stamping, die forging, cold heading, pressing and compression molding, the external force required for separation or forming is applied to the blank through the mold; molds are also used in the processing of automotive accessories, making the processing of automotive accessories faster and more convenient.

[0003] At present, most of the molds for automobile parts production on the market are not easy to disassemble and replace, and thus cannot be used for the processing and manufacturing of workpieces of different sizes. Therefore, the existing molds for automobile parts production cannot meet the use requirements of automobile parts processing. In view of the current situation, they need to be improved. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a mold for the production of auto body parts, which effectively solves the problem in the above background technology that the current molds for the production of auto parts are not easy to disassemble and replace, and thus cannot be used for the processing and manufacturing of workpieces of different sizes.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mold for producing auto body parts, comprising a base, support columns are fixedly installed at the four corners of the base, a top plate is installed between the tops of the four support columns, a lower mold base is fixedly installed at the top of the base, a lower mold body is movably installed at the top of the lower mold base, an upper mold base is provided on the upper part of the lower mold body, an upper mold body is movably installed at the bottom of the upper mold base, movable sleeve blocks are installed between the four corners of the upper mold base and the four support columns, a fixing frame is fixedly installed on the top of the upper mold base, a hydraulic cylinder is installed on the top of the top plate, and the bottom of the hydraulic cylinder extends to the bottom of the top plate and is fixedly connected to the top of the fixing frame;

[0006] Four sockets are provided on the top of the lower die base, a latch is fixedly installed on the bottom of the lower die body, and the latch is movably plugged into the inside of the sockets. Long grooves are provided on both sides of the top of the lower die base, and a supporting mechanism is installed at the bottom of the long groove. Moving mechanisms are installed on both sides of the bottom of the lower die body, and a supporting power mechanism is provided below the supporting mechanism.

[0007] The supporting mechanism includes a first cavity, a supporting plate and a first spring. The first cavity is opened at the bottom of the long groove. The supporting plate is movably installed inside the first cavity. The first spring is equidistantly installed between the two sides of the bottom of the first cavity and the two sides of the bottom of the supporting plate. The moving mechanism includes slats and moving wheels. The slats are fixedly installed on both sides of the bottom of the lower mold body. The moving wheels are equidistantly installed at the bottom of the slats. The slats are movably inserted into the inside of the long groove. The moving wheels are in rolling contact with the top of the support plate.

[0008] Preferably, the supporting power mechanism includes a second cavity, a fixed block and a rotating top block, the second cavity is opened at the top of the first cavity, the fixed block is installed at an equal distance at the bottom of the second cavity, the rotating top block is rotatably installed on the top of the fixed block, and the top of the rotating top block contacts the bottom of the support plate.

[0009] Preferably, a threaded rod is rotatably installed at the bottom of the second cavity, the threaded rod passes through the bottom of the fixed block, and a pushing block is threadedly connected at equal distances on the surface of the threaded rod. The top of the pushing block contacts one side of the rotating top block, and first motors are installed on both sides of one end of the lower mold base, and the output ends of the two first motors are respectively connected to one end of the two threaded rods.

[0010] Preferably, a limiting mechanism is installed between the lower die base and the lower die body, and the limiting mechanism includes a receiving groove, which is opened in the middle of the top of the lower die base, and a lifting block is slidably installed inside the storage groove, and a vertical rod is rotatably installed on the top of the lifting block, and torsion springs are connected between the two sides of the lower part of the vertical rod and the top of the lifting block, and a second spring is installed between the bottom of the lifting block and the bottom of the receiving groove, and a trapezoidal block is fixedly installed in the middle of the bottom of the lower die body, and the top of the vertical rod is in contact with the bottom of the trapezoidal block.

[0011] Preferably, an arc-shaped groove is formed on the inclined surface at the bottom of the trapezoidal block, a conical block is fixedly mounted on the top of the vertical rod, and the conical block is movably inserted into the inside of the arc-shaped groove.

[0012] Preferably, two slots are provided on the four sides of the bottom of the upper mold base, and two hooks are fixedly installed on the four sides of the top of the upper mold body. The hooks are inserted into the inside of the slots, and an adjustment slot is provided on one side of the upper part of the slot, and a fixing mechanism is installed inside the adjustment slot.

[0013] Preferably, the fixing mechanism includes a connecting rod, which is movably inserted in the middle of the adjusting slot, a trapezoidal fixing block is installed at one end of the connecting rod and located inside the slot, one end of the trapezoidal fixing block is movably engaged with the hook, a trapezoidal extrusion block is fixedly installed at the other end of the connecting rod, a compression spring is sleeved on the other end of the connecting rod and located on one side of the trapezoidal extrusion block, an adjusting cavity is opened between one end of the adjusting slot, and a fixed power mechanism is installed inside the adjusting cavity.

[0014] Preferably, the fixed power mechanism includes a disc, which is rotatably installed inside the adjusting cavity, and eight triangular blocks are equidistantly installed on the arc surface of the disc, and the inclined surfaces of the triangular blocks are in sliding contact with one end of the trapezoidal extrusion block. An inner tooth circle is fixedly installed on the top of the disc, and four gears are rotatably installed on the top of the adjusting cavity at equal distances, and the four gears are all meshed with the inner tooth circle. A second motor is installed on the top of the upper mold base, and the output end of the second motor is fixedly connected to the axis center of one of the gears.

[0015] Preferably, movable handles are installed at both ends of both sides of the lower mold body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) During operation, the mold for producing the vehicle body parts can be conveniently and effectively disassembled and assembled by providing a lower mold base, a lower mold body, an upper mold base, an upper mold body, a jack, a latch, a supporting mechanism, a moving mechanism, a supporting power mechanism, a fixing mechanism and a fixing power mechanism. The disassembly and assembly process is simple and convenient, the operation is simple, and it is convenient for people to use. At the same time, the mold installation is stable and reliable, and the safety is high, so that it can meet the use requirements of processing and manufacturing workpieces of different sizes;

[0018] (2) During operation, the upper mold body can be effectively disassembled, replaced and installed by providing a slot, a hook, an adjustment slot, a connecting rod, a trapezoidal fixed block, a trapezoidal extrusion block, a compression spring, an adjustment chamber, a disc, a triangular block, an inner tooth circle, a gear and a second motor. When the upper mold body needs to be disassembled and replaced, the hydraulic cylinder is first started to make the fixing frame press the upper mold base and the upper mold body downward, so that the upper mold base drives the upper mold body to contact the lower mold body, and then the second motor is started to drive the inner tooth circle to rotate through one of the gears. The rotation of the inner tooth circle will drive the disc to rotate, and the rotation of the disc will drive the eight triangular blocks to rotate. The rotation of the eight triangular blocks will separate from the trapezoidal extrusion block. At the same time, the triangular block will drive the connecting rod to move the trapezoidal fixed block to the inside of the adjustment slot through the action of the compression spring, so that the trapezoidal fixed block is separated from the hook, and then the hydraulic cylinder is started in the direction to make the upper mold base, and the hook will move out from the inside of the slot so that the upper mold body is located on the top of the lower mold body.

[0019] (3) During operation, by providing a movable handle, a long groove, a first cavity, a support plate, a first spring, a slat, a movable wheel, a second cavity, a fixed block, a rotating top block, a threaded rod, a pushing block and a first motor, the lower mold body can be effectively disassembled, replaced and installed, and the lower mold body can be effectively moved; when it is necessary to disassemble and replace the lower mold body, first start the two first motors to move the pushing block toward the fixed block on the surface of the threaded rod, and the movement of the pushing block will push the rotating top block, so that the rotating top block rotates, and the rotation of the rotating top block will push the support plate upward, so that the support plate pushes the lower mold body upward through the movable wheel and the slat, and the upward movement of the lower mold body will cause the pin to be withdrawn from the inside of the socket, and then the lower mold body is pushed to move by the movable handle and the movable wheel, so that the lower mold body drives the upper mold body to move inside the long groove, so that the lower mold body and the upper mold body are removed from the bottom of the upper mold seat for disassembly;

[0020] (4) During operation, the lower mold body can be effectively positioned by providing a storage groove, a lifting block, a vertical rod, a torsion spring, a second spring, a trapezoidal block, an arc groove and a conical block; when the lower mold body drives the upper mold body to be installed, the lower mold body is first moved by moving the handle and the moving wheel, so that the lower mold body drives the upper mold body to move inside the long groove, and the movement of the lower mold body will drive the trapezoidal block to move, and finally the trapezoidal block will push the conical block and rotate the conical block, and finally the conical block will be stuck in the arc groove and make a sound, thereby reminding people that the lower mold body drives the upper mold body to move to the specified position. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0022] In the attached picture:

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the front cross-section structure of the lower die base of the present invention;

[0025] Figure 3 It is a schematic diagram of the side section structure of the lower die base of the present invention;

[0026] Figure 4 It is a schematic diagram of the side cross-section structure of the lifting block and the trapezoidal block of the present invention;

[0027] Figure 5 It is a schematic diagram of the front cross-section structure of the upper die base of the present invention;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of the expanded structure;

[0029] In the figure: 1, base; 2, support column; 3, top plate; 4, lower die seat; 5, lower die body; 501, moving handle; 6, upper die seat; 7, upper die body; 8, movable sleeve block; 9, fixed frame; 10, hydraulic cylinder; 11, socket; 12, latch; 13, long groove; 14, support mechanism; 1401, first cavity; 1402, support plate; 1403, first spring; 15, moving mechanism; 1501, slat; 1502, moving wheel; 16, supporting power mechanism; 1601, second cavity; 1602, fixed block; 1603, rotating top block; 17, threaded rod; 18, push block; 19, first Motor; 20, limit mechanism; 2001, storage slot; 2002, lifting block; 2003, vertical rod; 2004, torsion spring; 2005, second spring; 2006, trapezoidal block; 2007, arc groove; 2008, conical block; 21, slot; 22, hook; 23, adjustment slot; 24, fixing mechanism; 2401, connecting rod; 2402, trapezoidal fixing block; 2403, trapezoidal extrusion block; 2404, compression spring; 25, adjustment chamber; 26, fixed power mechanism; 2601, disc; 2602, triangular block; 2603, inner tooth circle; 2604, gear; 2605, second motor. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, by Figures 1 to 6 The present invention comprises a base 1, support columns 2 are fixedly installed at the four corners of the base 1, a top plate 3 is installed between the tops of the four support columns 2, a lower die seat 4 is fixedly installed on the top of the base 1, a lower die body 5 is movably installed on the top of the lower die seat 4, an upper die seat 6 is provided on the upper part of the lower die body 5, an upper die body 7 is movably installed on the bottom of the upper die seat 6, a movable sleeve block 8 is installed between the four corners of the upper die seat 6 and the four support columns 2, a fixing frame 9 is fixedly installed on the top of the upper die seat 6, a hydraulic cylinder 10 is installed on the top of the top plate 3, and the bottom of the hydraulic cylinder 10 extends to the bottom of the top plate 3 and is fixedly connected to the top of the fixing frame 9;

[0032] Four plug holes 11 are provided on the top of the lower die base 4, and a plug pin 12 is fixedly installed on the bottom of the lower die body 5, and the plug pin 12 is movably plugged into the inside of the plug hole 11. Through the arrangement of the plug hole 11 and the plug pin 12, the lower die body 5 and the lower die base 4 can be effectively connected. Long grooves 13 are provided on both sides of the top of the lower die base 4, and a supporting mechanism 14 is installed at the bottom of the long groove 13. Moving mechanisms 15 are installed on both sides of the bottom of the lower die body 5, and a supporting power mechanism 16 is provided below the supporting mechanism 14;

[0033] The supporting mechanism 14 includes a first cavity 1401, a supporting plate 1402 and a first spring 1403. The first cavity 1401 is opened at the bottom of the long groove 13. The supporting plate 1402 is movably installed inside the first cavity 1401. The first spring 1403 is equidistantly installed between the two sides of the bottom of the first cavity 1401 and the two sides of the bottom of the supporting plate 1402. The moving mechanism 15 includes slats 1501 and moving wheels 1502. The slats 1501 are fixedly installed on both sides of the bottom of the lower mold body 5, and the moving wheels 1502 are equidistantly installed at the bottom of the slats 1501. The slats 1501 are movably inserted into the inside of the long groove 13, and the moving wheels 1502 are in rolling contact with the top of the supporting plate 1402, so that the lower mold body 5 can be effectively moved and adjusted.

[0034] Embodiment 2, based on embodiment 1, Figure 2 and Figure 3 It is given that the supporting power mechanism 16 includes a second cavity 1601, a fixed block 1602 and a rotating top block 1603. The second cavity 1601 is opened at the top of the first cavity 1401, the fixed block 1602 is installed at an equal distance at the bottom of the second cavity 1601, and the rotating top block 1603 is rotatably installed on the top of the fixed block 1602. The top of the rotating top block 1603 contacts the bottom of the support plate 1402, thereby being able to effectively support the support plate 1402.

[0035] Embodiment 3, based on embodiment 2, Figure 2 and Figure 3 It is shown that a threaded rod 17 is rotatably installed at the bottom of the second cavity 1601, and the threaded rod 17 passes through the bottom of the fixed block 1602. A pushing block 18 is threadedly connected to the surface of the threaded rod 17 at equal distances. The top of the pushing block 18 is in contact with one side of the rotating top block 1603. A first motor 19 is installed on both sides of one end of the lower mold base 4. The output ends of the two first motors 19 are respectively connected to one end of the two threaded rods 17, thereby providing push for the support of the rotating top block 1603.

[0036] Embodiment 4, based on embodiment 1, Figure 2 and Figure 4It is given that a limiting mechanism 20 is installed between the lower mold base 4 and the lower mold body 5, and the limiting mechanism 20 includes a receiving groove 2001, and the receiving groove 2001 is opened in the middle of the top of the lower mold base 4, and a lifting block 2002 is slidably installed inside the receiving groove 2001, and a vertical rod 2003 is rotatably installed on the top of the lifting block 2002, and torsion springs 2004 are connected between the two sides of the lower part of the vertical rod 2003 and the top of the lifting block 2002, and a second spring 2005 is installed between the bottom of the lifting block 2002 and the bottom of the receiving groove 2001, and a trapezoidal block 2006 is fixedly installed in the middle of the bottom of the lower mold body 5, and the top of the vertical rod 2003 is in contact with the bottom of the trapezoidal block 2006, thereby effectively reminding people to move the lower mold body 5 to the specified position.

[0037] Embodiment 5, based on embodiment 4, Figure 2 and Figure 4 It is shown that an arc groove 2007 is formed on the inclined surface at the bottom of the trapezoidal block 2006, and a conical block 2008 is fixedly installed on the top of the vertical rod 2003. The conical block 2008 is movably inserted into the inside of the arc groove 2007, so that accurate positioning can be performed.

[0038] Embodiment 6, based on embodiment 1, Figure 5 and Figure 6 It is shown that two slots 21 are provided on the four sides of the bottom of the upper mold base 6, and two hooks 22 are fixedly installed on the four sides of the top of the upper mold body 7. The hooks 22 are inserted into the inside of the slots 21, and an adjustment slot 23 is provided on one side of the upper part of the slot 21. A fixing mechanism 24 is installed inside the adjusting slot 23, so as to effectively fix the connection between the upper mold base 6 and the upper mold body 7.

[0039] Embodiment 7, on the basis of embodiment 6, by Figure 5 and Figure 6 It is given that the fixing mechanism 24 includes a connecting rod 2401, which is movably inserted in the middle of the adjusting slot 23, one end of the connecting rod 2401 and located inside the slot 21 is installed with a trapezoidal fixing block 2402, one end of the trapezoidal fixing block 2402 is movably engaged with the hook 22, the other end of the connecting rod 2401 is fixedly installed with a trapezoidal extrusion block 2403, the other end of the connecting rod 2401 and located on one side of the trapezoidal extrusion block 2403 is sleeved with a compression spring 2404, an adjusting cavity 25 is opened between one end of the adjusting slot 23, and a fixing power mechanism 26 is installed inside the adjusting cavity 25, so that the fixing mechanism 24 can be effectively controlled and adjusted.

[0040] Embodiment 8, based on embodiment 7, Figure 5 and Figure 6It is given that the fixed power mechanism 26 includes a disk 2601, which is rotatably installed inside the adjusting chamber 25. Eight triangular blocks 2602 are equidistantly installed on the arc surface of the disk 2601. The inclined surface of the triangular block 2602 is in sliding contact with one end of the trapezoidal extrusion block 2403. An inner tooth circle 2603 is fixedly installed on the top of the disk 2601. Four gears 2604 are rotatably installed on the top of the adjusting chamber 25 at equal distances. The four gears 2604 are all meshed with the inner tooth circle 2603. A second motor 2605 is installed on the top of the upper mold base 6. The output end of the second motor 2605 is fixedly connected to the axis center of one of the gears 2604, thereby providing effective power for fixed clamping.

[0041] Embodiment 9, based on embodiment 1, Figure 2 It is shown that movable handles 501 are installed at both ends of the lower mold body 5, so that the lower mold body 5 can be effectively moved.

[0042] Working principle: When the upper die body 7 needs to be disassembled and replaced, the hydraulic cylinder 10 is first started to make the fixing frame 9 press the upper die base 6 and the upper die body 7 downward, so that the upper die base 6 drives the upper die body 7 to contact the lower die body 5, and then the second motor 2605 is started to drive the inner tooth circle 2603 to rotate through one of the gears 2604. The rotation of the inner tooth circle 2603 will drive the disk 2601 to rotate. The rotation of the disk 2601 will drive the eight triangular blocks 2602 to rotate. The rotation of the eight triangular blocks 2602 will separate from the trapezoidal extrusion block 2403. At the same time, the triangular blocks 2602 are The block 2602 will make the connecting rod 2401 drive the trapezoidal fixed block 2402 to move to the inside of the adjusting slot 23 through the action of the compression spring 2404, so that the trapezoidal fixed block 2402 is separated from the hook 22, and then the hydraulic cylinder 10 is started in the direction to make the upper die seat 6, and the hook 22 will move out from the inside of the slot 21 so that the upper die body 7 is located on the top of the lower die body 5; when it is necessary to disassemble and replace the lower die body 5, first start the two first motors 19 to make the push block 18 move toward the fixed block 1602 on the surface of the threaded rod 17, and the movement of the push block 18 will affect the rotation The top block 1603 is pushed, so that the rotating top block 1603 rotates, and the rotation of the rotating top block 1603 pushes the support plate 1402 upward, so that the support plate 1402 pushes the lower mold body 5 upward through the moving wheel 1502 and the slat 1501, and the upward movement of the lower mold body 5 causes the pin 12 to be withdrawn from the inside of the socket 11, and then the lower mold body 5 is pushed to move by the moving handle 501 and the moving wheel 1502, so that the lower mold body 5 drives the upper mold body 7 to move inside the long groove 13, so that the lower mold body 5 and the upper mold body 7 are removed from the bottom of the upper mold base 6. Disassembly; when the lower mold body 5 drives the upper mold body 7 to be installed, first push the lower mold body 5 to move by moving the handle 501 and the moving wheel 1502, so that the lower mold body 5 drives the upper mold body 7 to move inside the long groove 13, and the movement of the lower mold body 5 will drive the trapezoidal block 2006 to move, and finally the trapezoidal block 2006 pushes the conical block 2008 and makes the conical block 2008 rotate, and finally the conical block 2008 will be stuck in the interior of the arc groove 2007 and make a sound, thereby reminding people that the lower mold body 5 drives the upper mold body 7 to move to the specified position.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold for producing vehicle body parts, comprising a base (1), characterized in that: Support columns (2) are fixedly installed at the four corners of the base (1), a top plate (3) is installed between the tops of the four support columns (2), a lower die seat (4) is fixedly installed at the top of the base (1), a lower die body (5) is movably installed at the top of the lower die seat (4), an upper die seat (6) is provided on the upper part of the lower die body (5), an upper die body (7) is movably installed at the bottom of the upper die seat (6), movable sleeve blocks (8) are installed between the four corners of the upper die seat (6) and the four support columns (2), a fixed frame (9) is fixedly installed on the top of the upper die seat (6), a hydraulic cylinder (10) is installed on the top of the top plate (3), and the bottom of the hydraulic cylinder (10) extends to the bottom of the top plate (3) and is fixedly connected to the top of the fixed frame (9); Four insertion holes (11) are provided on the top of the lower die base (4); a latch (12) is fixedly installed on the bottom of the lower die body (5); the latch (12) is movably plugged into the inside of the insertion holes (11); long grooves (13) are provided on both sides of the top of the lower die base (4); a supporting mechanism (14) is installed at the bottom of the long groove (13); a moving mechanism (15) is installed on both sides of the bottom of the lower die body (5); and a supporting power mechanism (16) is provided below the supporting mechanism (14); The support mechanism (14) comprises a first cavity (1401), a support plate (1402) and a first spring (1403); the first cavity (1401) is opened at the bottom of the long groove (13); the support plate (1402) is movably installed inside the first cavity (1401); the first spring (1403) is equidistantly installed between the two sides of the bottom of the first cavity (1401) and the two sides of the bottom of the support plate (1402); the moving mechanism (15) comprises a slat (1501) and a moving wheel (1502); the slat (1501) is fixedly installed on the two sides of the bottom of the lower mold body (5); the moving wheel (1502) is equidistantly installed at the bottom of the slat (1501); the slat (1501) is movably inserted into the inside of the long groove (13); and the moving wheel (1502) is in rolling contact with the top of the support plate (1402); The supporting power mechanism (16) comprises a second cavity (1601), a fixed block (1602) and a rotating top block (1603); the second cavity (1601) is opened at the top of the first cavity (1401); the fixed block (1602) is installed at an equal distance at the bottom of the second cavity (1601); the rotating top block (1603) is rotatably installed at the top of the fixed block (1602); the top of the rotating top block (1603 is in contact with the bottom of the supporting plate (1402); A threaded rod (17) is rotatably installed at the bottom of the second cavity (1601), and the threaded rod (17) passes through the bottom of the fixed block (1602). The surface of the threaded rod (17) is threadedly connected with a push block (18) at equal distances, and the top of the push block (18) is in contact with one side of the rotating top block (1603). First motors (19) are installed on both sides of one end of the lower mold base (4), and the output ends of the two first motors (19) are respectively connected to one end of the two threaded rods (17).

2. A mold for producing vehicle body parts according to claim 1, characterized in that: A limiting mechanism (20) is installed between the lower die base (4) and the lower die body (5), the limiting mechanism (20) comprising a receiving groove (2001), the receiving groove (2001) being arranged in the middle of the top of the lower die base (4), a lifting block (2002) being slidably installed inside the receiving groove (2001), a vertical rod (2003) being rotatably installed on the top of the lifting block (2002), torsion springs (2004) being connected between the two sides of the lower part of the vertical rod (2003) and the top of the lifting block (2002), a second spring (2005) being installed between the bottom of the lifting block (2002) and the bottom of the receiving groove (2001), a trapezoidal block (2006) being fixedly installed in the middle of the bottom of the lower die body (5), and the top of the vertical rod (2003) being in contact with the bottom of the trapezoidal block (2006).

3. A mold for producing vehicle body parts according to claim 2, characterized in that: The inclined surface at the bottom of the trapezoidal block (2006) is provided with an arc groove (2007), and a conical block (2008) is fixedly installed on the top of the vertical rod (2003), and the conical block (2008) is movably inserted into the inside of the arc groove (2007).

4. A mold for producing vehicle body parts according to claim 1, characterized in that: Two slots (21) are provided on the four sides of the bottom of the upper die seat (6), and two hooks (22) are fixedly installed on the four sides of the top of the upper die body (7), the hooks (22) are inserted into the inside of the slots (21), and an adjustment slot (23) is provided on one side of the upper part of the slot (21), and a fixing mechanism (24) is installed inside the adjustment slot (23).

5. A mold for producing vehicle body parts according to claim 4, characterized in that: The fixing mechanism (24) comprises a connecting rod (2401), the connecting rod (2401) being movably inserted in the middle of the adjusting slot (23), one end of the connecting rod (2401) being provided with a trapezoidal fixing block (2402) located inside the slot (21), one end of the trapezoidal fixing block (2402) being movably engaged with the hook (22), the other end of the connecting rod (2401) being fixedly provided with a trapezoidal extrusion block (2403), the other end of the connecting rod (2401) being provided with a compression spring (2404) sleeved on one side of the trapezoidal extrusion block (2403), an adjusting chamber (25) being provided between one end of the adjusting slot (23), and a fixing power mechanism (26) being provided inside the adjusting chamber (25).

6. A mold for producing vehicle body parts according to claim 5, characterized in that: The fixed power mechanism (26) comprises a disk (2601), which is rotatably mounted inside the adjustment chamber (25); eight triangular blocks (2602) are equidistantly mounted on the circular arc surface of the disk (2601); the inclined surfaces of the triangular blocks (2602) are in sliding contact with one end of the trapezoidal extrusion block (2403); an inner tooth circle (2603) is fixedly mounted on the top of the disk (2601); four gears (2604) are equidistantly rotatably mounted on the top of the adjustment chamber (25); the four gears (2604) are all meshed with the inner tooth circle (2603); a second motor (2605) is mounted on the top of the upper die base (6); and the output end of the second motor (2605) is fixedly connected to the axis center of one of the gears (2604).

7. A mold for producing vehicle body parts according to claim 1, characterized in that: Both ends of the lower mold body (5) are equipped with movable handles (501).

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