Mold fitting device for long and short parts

Abstract

This invention relates to the field of automotive manufacturing technology, and particularly to a mold-closing device for parts of different lengths, comprising: a drawing die and a trimming and punching die; the drawing die is positioned upstream of the trimming and punching die; the drawing die is used for drawing and forming parts of different lengths, and the trimming and punching die is used for trimming and punching parts of different lengths. This mold-closing device for parts of different lengths can complete the drawing, forming, trimming, and punching processes of parts of different lengths using a single set of molds by switching internal structures, reducing mold design and development work and corresponding mold development costs. Simultaneously, it can reduce the number of mold changes during production line operation, improving workshop production efficiency and meeting the market demand for various automotive configurations.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and in particular to a mold-closing device for long and short parts. Background Technology

[0002] With the development of the automotive industry, in order to meet the market's diverse needs for automotive functions and configurations, some automotive body stamping parts are developed with different shapes, hole positions, and lengths according to market demand to meet the market's needs for different automotive functional configurations; for example: commercial vehicle cargo bed floor, automotive underbody structural parts, and battery packs.

[0003] For example, parts A and B differ in length. During their manufacturing process, parts A and B require OP10 drawing, OP20 trimming and punching, and OP30 shaping. These processes necessitate separate molds. Therefore, changes in part shape, length, and other parameters often necessitate the development of new molds to meet requirements. As configurations become more complex, more molds are needed, leading to longer development cycles and significantly increased vehicle manufacturing costs, thus hindering the development of automotive configurations. Summary of the Invention

[0004] This invention addresses the technical problem in the prior art that the processing and manufacturing of the same type of parts of different lengths requires the separate design of drawing dies and trimming machine punching dies, resulting in long die development cycles and high manufacturing costs. It provides a die-closing device for parts of different lengths.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0006] A die-forming device for parts of different lengths includes: a drawing die and a trimming and punching die; the drawing die is located upstream of the trimming and punching die; the drawing die is used to draw and form parts of different lengths, and the trimming and punching die is used to trim and punch parts of different lengths.

[0007] Further: the drawing die includes: a first upper die, a first lower die, a first upper die cutting edge insert, a first lower die cutting edge, a pressure ring, and a first positioning component;

[0008] The first upper mold is positioned directly above the first lower mold, and the pressure ring is positioned on the outside of the first lower mold;

[0009] The first upper die cutting edge insert is fixed at the lower end of the first upper die, and the first lower die cutting edge is disposed at the upper end of the first lower die; the first upper die cutting edge insert cooperates with the first lower die cutting edge;

[0010] The first positioning component is disposed on the first lower mold, and the first positioning component is used to position parts of different lengths.

[0011] Further: the first positioning component includes: a first positioning device, a second positioning device, a third positioning device, a fourth positioning device, and a fifth positioning device;

[0012] The first positioning device is disposed on the front side of the upper end of the first lower mold and is used to position the front side of the part;

[0013] The second positioning device is disposed on the rear side of the upper end of the first lower mold and is used for positioning the rear side of long parts; the third positioning device is disposed on the inner side of the upper end of the first lower mold and is used for positioning the rear side of short parts.

[0014] The fourth positioning device is located on the left side of the upper end of the first lower mold and is used to position the left side of the part.

[0015] The fifth positioning fixture is located on the right side of the upper end of the first lower mold and is used to position the right side of the part.

[0016] Furthermore: the third positioning device includes: a first cylinder and a positioning rod;

[0017] The first cylinder is mounted on the first lower mold; the piston rod of the first cylinder is connected to the positioning rod, and the first cylinder is used to drive the positioning rod to move longitudinally.

[0018] Furthermore, it also includes: a lower mold base; the first lower mold and the pressure ring are disposed on the lower mold base.

[0019] Further: The trimming and punching die includes: an upper die base, a second upper die, a second lower die, a punching assembly, a first upper die trimming insert, a first lower die trimming insert, a second lower die trimming insert, and a second positioning assembly;

[0020] The second upper mold is fixed at the lower end of the upper mold base, and the second upper mold is positioned directly above the second lower mold;

[0021] The blanking assembly is disposed inside the second upper die, and the first lower die trimming insert is disposed at the upper end of the second lower die; the blanking assembly cooperates with the first lower die trimming insert to trim and blank short parts; the first upper die trimming insert is fixed at the lower end of the second upper die, and the second lower die trimming insert is disposed at the upper end of the second lower die; the first upper die trimming insert cooperates with the second lower die trimming insert to trim and blank long parts.

[0022] The second positioning component is disposed on the second lower mold, and the second positioning component is used to position parts of different lengths.

[0023] Further: The punching assembly includes: a cylinder mounting plate, a second cylinder, a cylinder connecting block, a hook, a first guide plate, a second guide plate, a drive guide plate, a wedge drive pad, a wedge seat body, a drive seat, a third guide plate, a first nitrogen spring, a second nitrogen spring, a third nitrogen spring, and a second upper die trimming insert.

[0024] The second cylinder is mounted on the upper mold base via the cylinder mounting plate;

[0025] The piston rod of the second cylinder is connected to the drive seat through the cylinder connecting block and the hook; the first guide plate and the second guide plate are fixed on the upper mold base to guide the drive seat to move laterally.

[0026] The drive guide plate is mounted on the drive seat, and the wedge drive pad is mounted on the wedge seat body. The drive guide plate and the wedge drive pad cooperate to convert the lateral movement into longitudinal movement.

[0027] The third guide plate is arranged longitudinally, and the wedge seat body is arranged inside the third guide plate. The third guide plate is used to guide the wedge seat body to move longitudinally.

[0028] The second upper mold trimming insert is connected to the lower end of the wedge seat body through the first nitrogen spring and the second nitrogen spring. The second upper mold trimming insert is also connected to the upper mold seat through the third nitrogen spring. The second upper mold trimming insert cooperates with the first lower mold trimming insert.

[0029] Furthermore: the upper mold base is provided with an air inlet and outlet interface, the air inlet and outlet interface having a built-in separate air inlet and air outlet, the air inlet being connected to the air inlet end of the second cylinder, and the air outlet being connected to the air outlet end of the second cylinder.

[0030] Further: the second positioning component includes: a sixth positioning device, a seventh positioning device, an eighth positioning device, a ninth positioning device, and a tenth positioning device;

[0031] The sixth positioning device is located on the front side of the upper end of the second lower mold and is used to position the front side of the part.

[0032] The seventh positioning fixture is disposed on the rear side of the upper end of the second lower mold and is used for positioning the rear side of long parts; the eighth positioning fixture is disposed on the inner side of the upper end of the second lower mold and is used for positioning the rear side of short parts.

[0033] The ninth positioning fixture is located on the left side of the upper end of the second lower mold and is used to position the left side of the part.

[0034] The tenth positioning device is located on the right side of the upper end of the second lower mold and is used to position the right side of the part.

[0035] Furthermore: the eighth positioning device includes: a third cylinder and a stop block;

[0036] The third cylinder is located inside the second lower mold; the movable end of the third cylinder is connected to the stop block, and the third cylinder is used to drive the stop block to move longitudinally.

[0037] The mold clamping device for long and short parts provided by the present invention has at least the following beneficial effects or advantages:

[0038] The present invention provides a mold-closing device for parts of different lengths, comprising a drawing die and a trimming and punching die; the drawing die is positioned upstream of the trimming and punching die; the drawing die is used for drawing and forming parts of different lengths, and the trimming and punching die is used for trimming and punching parts of different lengths. This mold-closing device for parts of different lengths can complete the drawing, forming, trimming, and punching processes of parts of different lengths using a single set of molds by switching internal structures. This reduces the design and development work of molds, cuts corresponding mold development costs, and reduces the number of mold changes during production line operation, improving workshop production efficiency and meeting the market demand for various automotive configurations. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the drawing die structure of the long and short parts clamping device provided in an embodiment of the present invention;

[0040] Figure 2 A schematic diagram of the trimming and punching die structure of the long and short parts clamping device provided in an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of long and short parts in the drawing process provided in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of long and short parts in the trimming and punching process provided in an embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram of long and short parts in the shaping process provided in an embodiment of the present invention.

[0044] The attached diagram lists the components represented by each number as follows:

[0045] 11-First upper die, 12-First lower die, 13-First upper die cutting edge insert, 14-First lower die cutting edge, 15-Pressure ring, 161-First positioning device, 162-Second positioning device, 1631-First cylinder, 1632-Positioning rod, 164-Fourth positioning device, 165-Fifth positioning device, 17-Lower die base, 21-Upper die base, 22-Second upper die, 23-Second lower die, 51-Cylinder mounting plate, 52-Second cylinder, 53-Cylinder connecting block, 54-Hook, 55-First guide plate, 56-Second guide plate, 5 7-Drive guide plate, 58-Wedge drive pad, 59-Wedge seat body, 510-Drive seat, 511-Third guide plate, 512-First nitrogen spring, 513-Second nitrogen spring, 514-Third nitrogen spring, 515-Second upper mold trimming insert, 25-First upper mold trimming insert, 26-First lower mold trimming insert, 27-Second lower mold trimming insert, 281-Sixth positioning fixture, 282-Seventh positioning fixture, 2831-Third cylinder, 2832-Stop block, 284-Ninth positioning fixture, 285-Tenth positioning fixture. Detailed Implementation

[0046] This invention addresses the technical problem in the prior art that the processing and manufacturing of the same type of parts of different lengths requires the separate design of drawing dies and trimming machine punching dies, resulting in long die development cycles and high manufacturing costs. It provides a die-closing device for parts of different lengths.

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] This invention provides a mold-closing device for parts of different lengths. Structurally, it mainly comprises two parts: a drawing die and a trimming and punching die. The drawing die is positioned upstream of the trimming and punching die in the process flow. The drawing die is used to draw and form parts of different lengths, while the trimming and punching die is used to trim and punch parts of different lengths. This mold-closing device for parts of different lengths can complete the drawing, trimming, and punching processes of parts of different lengths using a single set of molds by switching internal structures. This reduces the design and development work of the molds, lowers the corresponding mold development costs, and reduces the number of mold changes required on the production line, improving workshop production efficiency. It solves the technical problems of long mold development cycles and high manufacturing costs in existing technologies.

[0049] Specifically: such as Figure 1The drawing die includes: a first upper die 11, a first lower die 12, a lower die base 17, a first upper die cutting edge insert 13, a first lower die cutting edge 14, a blank holder 15, and a first positioning assembly. Among these, the first upper die 11, the first lower die 12, and the first blank holder 15 are existing, mature components, and their specific structures will not be described in detail here. The first upper die 11 is positioned directly above the first lower die 12, and the blank holder 15 is positioned outside the first lower die 12. The first lower die 12 and the blank holder 15 are mounted on the lower die base 17. The first upper die 11 and the first lower die 12 are the main force-applying components in the drawing process, and the blank holder 15 is a force-applying component used to fix the edge of the part during the drawing process. The first upper die cutting edge insert 13 is fixed to the lower end of the first upper die 11, and the first lower die cutting edge 14 is fixed to the upper end of the first lower die 12. The first upper die cutting edge insert 13 and the first lower die cutting edge 14 cooperate to form the part. The first positioning component is set on the first lower mold 12. The first positioning component is used to position parts of different lengths. Specifically, during the positioning process, version switching can be performed to adapt to the positioning of parts of different lengths.

[0050] In the above scheme, such as Figure 1 The first positioning component can adopt various structures; for example, the first positioning component includes: a first positioning fixture 161, a second positioning fixture 162, a third positioning fixture, a fourth positioning fixture 164, and a fifth positioning fixture 165. The first positioning fixture 161 is located on the front side of the upper end of the first lower mold 12 and is used for positioning the front side of the part. The second positioning fixture 162 is located on the rear side of the upper end of the first lower mold 12 and is used for positioning the rear side of long parts; the third positioning fixture is located on the inner side of the upper end of the first lower mold 12 and is used for positioning the rear side of short parts; specifically, the third positioning fixture includes: a first cylinder 1631 and a positioning rod 1632. The first cylinder 1631 is located on the inner side of the first lower mold 12; the movable end of the first cylinder 1631 is connected to the positioning rod 1632, and the first cylinder 1631 is used to drive the positioning rod 1632 to move longitudinally. The fourth positioning fixture 164 is located on the left side of the upper end of the first lower mold 12 and is used for positioning the left side of the part. The fifth positioning fixture 165 is located on the right side of the upper end of the first lower mold 12 and is used to position the right side of the part.

[0051] like Figure 1 and Figure 3 The working process of the drawing die is as follows:

[0052] When part A (short-sized part 3) is being produced, the air pipe on the mold is connected to the air source connector on the press workbench, providing air to the first cylinder 1631. The positioning rod 1632 is in the ejected state. When the mold is at the top dead center, the pressure ring 15 is in the lifted state, and the robot arm puts the sheet metal A into the mold cavity. The sheet metal is positioned by the positioning rod 1632 of the third positioning fixture, as well as the first positioning fixture 161, the fourth positioning fixture 164, and the fifth positioning base. As the upper die 11 descends with the upper slide of the press, 8mm before the upper die 11 contacts the pressure ring 15, the cutting edge insert 13 of the upper die, in conjunction with the cutting edge 14 of the lower die, begins to gradually pierce the sheet metal A. The upper die 11 continues to descend, and the pressure ring 15 comes into complete contact with the sheet metal, and the part begins to be drawn and formed. After descending to the bottom dead center, the sheet metal A is completely formed in the cavity of the upper die 11 and the lower die 12. The upper die 11 continues to rise with the press slide to the top dead center, and the pressure ring 15 is lifted up together with the upper die 11. At this time, the robot arm grabs the workpiece in the drawn die after it has been formed and puts it into the trimming and punching die for trimming and punching.

[0053] When part B (long part 4) is being produced, the air pipe on the mold is connected to the air source connector on the press worktable, providing a retraction air source to the first cylinder 1631, and the positioning rod 1632 is in the retraction state (the positioning rod 1632 retracts below the first lower mold 12). When the mold is at the top dead center, the pressure ring 15 is in the lifting state, and the robot arm puts the sheet metal B into the mold cavity, relying on the first positioning fixture 161, the second positioning fixture 162, the fourth positioning fixture 164, and the fifth positioning fixture 165 to position the sheet metal. As the upper die 11 descends with the upper slide of the press, 8mm before the upper die 11 contacts the pressure ring 15, the cutting edge insert 13 of the upper die, in conjunction with the cutting edge 14 of the lower die, begins to gradually pierce the sheet metal B. The upper die 11 continues to descend, and the pressure ring 15 comes into complete contact with the sheet metal, and the part begins to be drawn and formed. After descending to the bottom dead center, the sheet metal B is completely formed in the cavity of the upper die 11 and the lower die 12. The upper die 11 continues to rise with the press slide to the top dead center, and the pressure ring 15 is lifted up together with the upper die 11. At this time, the robot arm grabs the workpiece in the formed drawing die and puts it into the trimming and punching die for trimming and punching.

[0054] Trimming and punching is the next step in drawing forming. This invention further modifies the trimming and punching die, such as... Figure 2The trimming and punching die includes: an upper die base 21, a second upper die 22, a second lower die 23, a punching assembly, a first upper die trimming insert 25, a first lower die trimming insert 26, a second lower die trimming insert 27, and a second positioning assembly. The second upper die 22 is fixed to the lower end of the upper die base 21 and is positioned directly above the second lower die 23. The second upper die 22 and the second lower die 23 are existing, mature components, and their specific structures will not be described in detail here. The second upper die 22 and the second lower die 23 are the main force-applying components in the trimming and punching process. The punching assembly is an important component for trimming and punching short-sized parts. The punching assembly is located inside the second upper die 22, and the first lower die trimming insert 26 is located at the upper end of the second lower die 23. The punching assembly cooperates with the first lower die trimming insert 26 to trim and punch short-sized parts. The first upper die trimming insert 25 is fixed to the lower end of the second upper die 22, and the second lower die trimming insert 27 is disposed at the upper end of the second lower die 23. The first upper die trimming insert 25 and the second lower die trimming insert 27 cooperate to trim and punch long parts. The second positioning component is disposed on the second lower die 23 and is used to position parts of different lengths. Similarly, during the positioning process, version switching can be performed to adapt to the positioning of parts of different lengths.

[0055] like Figure 2In this embodiment, the punching assembly is specifically designed as follows: its structure mainly includes: a cylinder mounting plate 51, a second cylinder 52, a cylinder connecting block 53, a hook 54, a first guide plate 55, a second guide plate 56, a drive guide plate 57, a wedge drive pad 58, a wedge seat body 59, a drive seat 510, a third guide plate 511, a first nitrogen spring 512, a second nitrogen spring 513, a third nitrogen spring 514, and a second upper die trimming insert 515. The upper die base 21 is provided with air inlet and outlet interfaces, each containing a separate air inlet and outlet. The air inlet is connected to the air inlet end of the second cylinder 52, and the air outlet is connected to the air outlet end of the second cylinder 52. The second cylinder 52 is mounted on the upper die base 21 via the cylinder mounting plate 51. The piston rod of the second cylinder 52 is connected to the drive seat 510 via the cylinder connecting block 53 and the hook 54. The first guide plate 55 and the second guide plate 56 are fixed on the upper mold base 21 to guide the drive seat 510 to move laterally. The drive guide plate 57 is mounted on the drive seat 510, and the wedge drive pad 58 is mounted on the wedge seat body 59. The drive guide plate 57 and the wedge drive pad 58 cooperate to convert the lateral movement into longitudinal movement. The third guide plate 511 is arranged longitudinally, and the wedge seat body 59 is located inside the third guide plate 511. The third guide plate 511 is used to guide the wedge seat body 59 to move longitudinally. The second upper mold trimming insert 515 is connected to the lower end of the wedge seat body 59 via the first nitrogen spring 512 and the second nitrogen spring 513. The second upper mold trimming insert 515 is also connected to the second upper mold base 21 via the third nitrogen spring 514. The second upper mold trimming insert 515 cooperates with the first lower mold trimming insert 26.

[0056] like Figure 2 The second positioning component includes: a sixth positioning fixture 281, a seventh positioning fixture 282, an eighth positioning fixture, a ninth positioning fixture 284, and a tenth positioning fixture 285. The sixth positioning fixture 281 is located on the front side of the upper end of the second lower mold 23 and is used for positioning the front side of the part. The seventh positioning fixture 282 is located on the rear side of the upper end of the second lower mold 23 and is used for positioning the rear side of long parts. The eighth positioning fixture is located on the inner side of the upper end of the second lower mold 23 and is used for positioning the rear side of short parts; specifically, the eighth positioning fixture includes: a third cylinder 2831 and a stop block 2832; the third cylinder 2831 is located on the inner side of the second lower mold 23; the movable end of the third cylinder 2831 is connected to the stop block 2832, and the third cylinder 2831 is used to drive the stop block 2832 to move longitudinally. The ninth positioning fixture 284 is located on the left side of the upper end of the second lower mold 23 and is used for positioning the left side of the part. The tenth positioning fixture 285 is located on the right side of the upper end of the second lower mold 23 and is used for positioning the right side of the part.

[0057] like Figure 2 and Figure 4 The working process of the trimming and punching die is as follows:

[0058] When part A (short-sized part 3) is being produced, an air pipe is used to connect the air inlet of the third cylinder 2831 on the mold to the air source connector on the press worktable. At this time, an air source is supplied to the second cylinder 52, causing the piston rod of the second cylinder 52 to extend. The drive guide plate 57, along with the drive seat 510, is driven to the right by the second cylinder 52. The wedge drive pad 58 is driven downwards by the inclined surface of the drive guide plate 57. The second upper mold trimming insert 515 and the wedge seat body 59 move downwards together with the wedge drive pad 58 under the guidance of the guide plate. The second upper mold trimming insert 515 extends, completing the mold version state switch. Driven by the air source, the piston rod of the third cylinder 2831 extends, and the stop block 2832 of the eighth positioning fixture extends upwards with the drive of the third cylinder 2831, completing the external positioning switch.

[0059] When the mold is at the top dead center, the stop block 2832 of the eighth positioning fixture is in the lifted state. The robot arm puts the workpiece A into the mold cavity, and the workpiece A is positioned by the sixth positioning fixture 281, the eighth positioning fixture, the ninth positioning fixture 284, and the tenth positioning fixture 285. As the upper die 22 moves down with the upper slide of the press, the blank holder contacts the surface of the lower die 23, and the workpiece A receives the blank holder force. The upper die 22 continues to move down with the upper slide of the press, and the trimming insert 515 of the upper die begins to enter, and the workpiece A begins to be trimmed and punched. After the upper die 22 moves down to the bottom dead center, the workpiece A is completely trimmed and punched in the cavity of the blank holder and the lower die 23. The upper die 22 continues to move up with the upper slide of the press to the top dead center. At this time, the robot arm picks up the formed workpiece A and puts it into the next process mold for shaping (e.g., Figure 5 (The state shown).

[0060] When part B (long part 4) is being produced, an air pipe is used to connect the air inlet and outlet ports of the second cylinder 52 on the mold to the air source connector on the press workbench. At this time, air is supplied to the second cylinder 52, causing its telescopic rod to retract. The drive guide plate 57, along with the drive seat 510, is driven to the left by the second cylinder 52. At this time, the first nitrogen spring 512 and the second nitrogen spring 513 are in a compressed state. When the drive guide plate 57 is fully retracted, the wedge drive pad 58, the second upper mold trimming insert 515, and the wedge seat body 59 are in contact with the first nitrogen gas. Under the elastic force of spring 512 and the second nitrogen spring 513, the second upper mold trimming insert 515 is completely retracted. The force of the first nitrogen spring 512 and the second nitrogen spring 513 is greater than the weight of the third nitrogen spring 514 and the wedge seat body 59 itself, ensuring that the second upper mold trimming insert 515 will not be ejected after it is completely retracted, thus completing the mold version state switch. Driven by the air source, the piston rod of the third cylinder 2831 retracts, and the stop block 2832 of the eighth positioning fixture retracts downward to below the surface of the second lower mold 23 as driven by the cylinder, thus completing the external positioning switch.

[0061] When the mold is at the top dead center, the stop block 2832 of the eighth positioning fixture is in the retracted state. The robot arm puts the workpiece B into the mold cavity, and the workpiece B is positioned by the sixth, seventh, ninth, and tenth outer positioning fixtures. As the upper die 22 descends with the upper slide of the press, the blank holder contacts the surface of the lower die 23, and the workpiece B is subjected to the blank holder force. As the upper die 22 continues to descend with the upper slide of the press, the trimming insert 25 of the first upper die begins to enter, and the part begins to be trimmed and punched. After the upper die 22 descends to the bottom dead center, the workpiece B is completely trimmed and punched in the cavity of the blank holder and the lower die 23. The upper die 22 continues to rise with the press slide to the top dead center. At this time, the robot arm picks up the formed workpiece B and puts it into the next process mold for shaping (e.g., Figure 5 (The state shown).

[0062] The mold clamping device for long and short parts provided by the present invention has at least the following beneficial effects or advantages:

[0063] The present invention provides a mold-closing device for parts of different lengths, comprising a drawing die and a trimming and punching die; the drawing die is positioned upstream of the trimming and punching die; the drawing die is used for drawing and forming parts of different lengths, and the trimming and punching die is used for trimming and punching parts of different lengths. This mold-closing device for parts of different lengths can complete the drawing, forming, trimming, and punching processes of parts of different lengths using a single set of molds by switching internal structures. This reduces the design and development work of molds, cuts corresponding mold development costs, and reduces the number of mold changes during production line operation, improving workshop production efficiency and meeting the market demand for various automotive configurations.

[0064] In the description of this invention, it should be noted that the terms used in the various embodiments, such as "upper," "lower," "front," "rear," "left," and "right," which indicate orientation, are only used to simplify the description of the positional relationships based on the accompanying drawings and do not mean that the components and devices referred to must be operated in accordance with the specific orientations and defined operations, methods, and structures in the specification. Such directional terms do not constitute a limitation of this invention.

[0065] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mold clamping device for long and short parts, characterized in that: include: Drawing dies and trimming / punching dies; The drawing die is located upstream of the trimming and punching die; The drawing die is used to draw parts of different lengths, and the trimming and punching die is used to trim and punch parts of different lengths. The trimming and punching die includes: an upper die base (21), a second upper die (22), a second lower die (23), a punching assembly, a first upper die trimming insert (25), a first lower die trimming insert (26), a second lower die trimming insert (27), and a second positioning assembly; The second upper mold (22) is fixed at the lower end of the upper mold base (21), and the second upper mold (22) is located directly above the second lower mold (23); The blanking assembly is disposed inside the second upper die (22), and the first lower die trimming insert (26) is disposed at the upper end of the second lower die (23); the blanking assembly cooperates with the first lower die trimming insert (26) for trimming and blanking short-sized parts; the first upper die trimming insert (25) is fixed at the lower end of the second upper die (22), and the second lower die trimming insert (27) is disposed at the upper end of the second lower die (23); the first upper die trimming insert (25) cooperates with the second lower die trimming insert (27) for trimming and blanking long-sized parts; The second positioning component is disposed on the second lower mold (23), and the second positioning component is used to position parts of different lengths; The punching assembly includes: a cylinder mounting plate (51), a second cylinder (52), a cylinder connecting block (53), a hook (54), a first guide plate (55), a second guide plate (56), a drive guide plate (57), a wedge drive pad (58), a wedge seat body (59), a drive seat (510), a third guide plate (511), a first nitrogen spring (512), a second nitrogen spring (513), a third nitrogen spring (514), and a second upper die trimming insert (515). The second cylinder (52) is mounted on the upper mold base (21) via the cylinder mounting plate (51); The piston rod of the second cylinder (52) is connected to the drive seat (510) through the cylinder connecting block (53) and the hook (54); the first guide plate (55) and the second guide plate (56) are fixed on the upper mold base (21) to guide the drive seat (510) to move laterally. The drive guide plate (57) is mounted on the drive seat (510), and the wedge drive pad (58) is mounted on the wedge seat body (59). The drive guide plate (57) and the wedge drive pad (58) cooperate to convert the lateral movement into longitudinal movement. The third guide plate (511) is arranged longitudinally, and the wedge seat body (59) is arranged inside the third guide plate (511). The third guide plate (511) is used to guide the wedge seat body (59) to move longitudinally. The second upper mold trimming insert (515) is connected to the lower end of the inclined wedge seat body (59) through the first nitrogen spring (512) and the second nitrogen spring (513). The second upper mold trimming insert (515) is also connected to the upper mold seat (21) through the third nitrogen spring (514). The second upper mold trimming insert (515) cooperates with the first lower mold trimming insert (26).

2. The mold clamping device for long and short parts according to claim 1, characterized in that: The drawing die includes: a first upper die (11), a first lower die (12), a first upper die cutting edge insert (13), a first lower die cutting edge (14), a pressure ring (15), and a first positioning component; The first upper mold (11) is positioned directly above the first lower mold (12), and the pressure ring (15) is positioned on the outside of the first lower mold (12); The first upper die cutting edge insert (13) is fixed at the lower end of the first upper die (11), and the first lower die cutting edge (14) is disposed at the upper end of the first lower die (12); the first upper die cutting edge insert (13) cooperates with the first lower die cutting edge (14); The first positioning component is disposed on the first lower mold (12), and the first positioning component is used to position parts of different lengths.

3. The mold clamping device for long and short parts according to claim 2, characterized in that: The first positioning component includes: a first positioning device (161), a second positioning device (162), a third positioning device, a fourth positioning device (164), and a fifth positioning device (165). The first positioning fixture (161) is located on the front side of the upper end of the first lower mold (12) and is used to position the front side of the part; The second positioning fixture (162) is located on the rear side of the upper end of the first lower mold (12) and is used to position the rear side of long parts; the third positioning fixture is located on the inner side of the upper end of the first lower mold (12) and is used to position the rear side of short parts. The fourth positioning fixture (164) is located on the left side of the upper end of the first lower mold (12) and is used to position the left side of the part; The fifth positioning fixture (165) is located on the right side of the upper end of the first lower mold (12) and is used to position the right side of the part.

4. The mold clamping device for long and short parts according to claim 3, characterized in that: The third positioning device includes: a first cylinder (1631) and a positioning rod (1632); The first cylinder (1631) is mounted on the first lower mold (12); the piston rod of the first cylinder (1631) is connected to the positioning rod (1632), and the first cylinder (1631) is used to drive the positioning rod (1632) to move longitudinally.

5. The mold clamping device for long and short parts according to any one of claims 2-4, characterized in that: Also includes: Lower mold base (17); the first lower mold (12) and the pressure ring (15) are disposed on the lower mold base (17).

6. The mold clamping device for long and short parts according to claim 1, characterized in that: The upper mold base (21) is provided with an air inlet and outlet interface. The air inlet and outlet interface has a built-in separate air inlet and air outlet. The air inlet is connected to the air inlet end of the second cylinder (52), and the air outlet is connected to the air outlet end of the second cylinder (52).

7. The mold clamping device for long and short parts according to claim 1, characterized in that: The second positioning component includes: a sixth positioning device (281), a seventh positioning device (282), an eighth positioning device, a ninth positioning device (284), and a tenth positioning device (285); The sixth positioning fixture (281) is located on the front side of the upper end of the second lower mold (23) and is used to position the front side of the part; The seventh positioning fixture (282) is located on the rear side of the upper end of the second lower mold (23) and is used for positioning the rear side of long parts; the eighth positioning fixture is located on the inner side of the upper end of the second lower mold (23) and is used for positioning the rear side of short parts. The ninth positioning fixture (284) is located on the left side of the upper end of the second lower mold (23) and is used to position the left side of the part; The tenth positioning fixture (285) is located on the right side of the upper end of the second lower mold (23) and is used to position the right side of the part.

8. The mold clamping device for long and short parts according to claim 7, characterized in that: The eighth positioning device includes: a third cylinder (2831) and a stop block (2832); The third cylinder (2831) is located inside the second lower mold (23); the movable end of the third cylinder (2831) is connected to the stop block (2832), and the third cylinder (2831) is used to drive the stop block (2832) to move longitudinally.

Images