Cold-formed ultrahigh-strength plate springback treatment side-pushing shaping device

Abstract

The utility model provides a cold-formed ultrahigh-strength plate springback treatment side-pushing shaping device which is characterized in that a hydraulic cylinder controls a lifting platform to descend, and the lifting platform drives an upper die insert to press downwards through a plurality of nitrogen cylinders penetrating through a middle platform; the connecting rods of the multiple sets of reset stroke limiting assemblies slidably penetrate through the middle platform, the lower ends of the connecting rods are fixed to the upper die insert, the connecting rods located on the middle platform are sleeved with elastic sleeves, and the tops of the connecting rods are slidably sleeved with large gaskets. The upper end and the lower end of the elastic sleeve abut against the large gasket and the middle platform respectively. A plurality of nitrogen spring cylinders for keeping are fixedly connected with the lifting platform, and the top ends of piston rods abut against the middle platform; the base is further provided with two sets of side pushing units, and synchronous action is achieved through driving power transmitted by downward pressing of the lifting platform. According to the device, the notch of the ultra-high-strength n-shaped automobile seat cross beam can be automatically shaped, the structure is simple, mounting and dismounting are convenient, and the device has a more flexible and diversified stroke adjusting function.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-strength steel plate profile processing equipment for automobiles, and particularly relates to a side-pushing and shaping device for springback treatment of cold-formed ultra-high-strength plates. Background Art

[0002] Figure 1 It is a three-dimensional schematic diagram of a seat crossbeam for a certain electric vehicle. Its cross-section is in a shape of "several", and the material is ultra-high-strength martensitic steel with a yield strength of 1500 Mpa. It is formed by a cold-forming roll pressing process. After forming, it is necessary to cut a cut 13 passing through the bottom 10 of the through groove, the groove wall 11 and the outer wing 12 at the position shown in the figure. Since the material used for this product is very hard, springback deformation occurs at the cut 13 after cutting. Therefore, it is necessary to design a shaping device to eliminate the deformation problem of the product. Content of the Utility Model

[0003] In view of this, the utility model provides a side-pushing and shaping device for springback treatment of cold-formed ultra-high-strength plates, including:

[0004] A base, on the top of which an intermediate platform and a top platform are supported and fixedly connected. A lifting platform is located between the intermediate platform and the top platform. A hydraulic cylinder is fixed on the top platform. The piston rod of the hydraulic cylinder passes through the top platform and abuts against the lifting platform through a connecting piece;

[0005] A lower die insert is fixed on the base. An upper die insert is located directly above the lower die insert and can be clamped and separated from the lower die insert by ascending and descending;

[0006] Above the upper die insert, a plurality of nitrogen cylinders and multiple groups of reset and limit components are arranged;

[0007] Each nitrogen cylinder passes through the intermediate platform with a movable gap left therebetween. The cylinder body is fixedly connected to the lifting platform, and the piston rod abuts against the upper die insert;

[0008] Each group of reset and limit components includes a connecting rod that slidably passes through the intermediate platform; the lower end of the connecting rod is fixed to the upper die insert; an elastic sleeve is sleeved on the connecting rod above the intermediate platform. A large washer is slidably sleeved on the connecting rod at the top. A small washer that plays a role in limiting and preventing the large washer from coming off is fixedly connected to the top end of the connecting rod; the upper and lower ends of the elastic sleeve abut against the large washer and the intermediate platform respectively;

[0009] It further includes a plurality of holding nitrogen springs. The cylinder body of each holding nitrogen spring is fixedly connected to the lifting platform, and the top end of the piston rod abuts against the intermediate platform;

[0010] On both the left and right sides of the lower die insert inside the base, two groups of side-pushing units are respectively arranged. The four groups of side-pushing units synchronously act by using the driving power transmitted by the downward pressure of the lifting platform. The two groups of side-pushing units on the same side respectively correspond to the groove walls on both sides of the cut at the corresponding side of the product.

[0011] Furthermore, each set of side thrust units includes: a driving block that is slidably connected to each other and can slide in the vertical direction and a shaping block that can slide in the horizontal direction. The driving block slides through the intermediate platform and is connected to the top of an adjustment pad with replaceable thickness according to stroke requirements. The top of the driving block is in contact with the lower surface of the lifting platform through the adjustment pad; the end portion where the driving block and the shaping block are slidably connected to each other is a 45-degree inclined surface; a reset nitrogen spring is provided between the shaping block and the base, which can enable the shaping block to reset and slide in a direction away from the lower mold insert.

[0012] Preferably, the lower part of the shaping block is accommodated by the accommodating groove opened by the base, and slider protrusions are respectively provided at the bottom of both sides of the sliding direction of the shaping block, and the slider protrusions are pressed against the slider protrusions by the guide pressing pieces fixed on the base; the lower end surface of the shaping block is slidably connected with the sliding gasket fixed to the bottom of the accommodating groove of the base; the reset nitrogen spring is accommodated in the accommodating groove opened at the lower part of the shaping block, and one end of the reset nitrogen spring abuts against the shaping block, and the other end abuts against the accommodating groove of the base.

[0013] Preferably, a channel formed by the notch opened in the middle platform and the side baffles fixed to the sides of the base is used for the driving block to pass through the middle platform and guide its lifting.

[0014] Preferably, a sliding gasket fixed to the side baffle is provided between the side baffle and the driving block.

[0015] Furthermore, a blind hole for abutting against the piston rod embedding sticker of the nitrogen cylinder is provided on the upper mold insert.

[0016] Furthermore, the lower end of the connecting rod is embedded in the countersunk through hole of the upper die insert, and the lower end of the connecting rod is fixed to the upper die insert by bolts.

[0017] Furthermore, the lifting platform is also provided with an avoidance hole for accommodating and avoiding the top of the adjustment component. The avoidance hole is a step hole, the annular step of which can press against the large washer, and the fine hole section can allow the small washer and the top of the connecting rod to pass without interference.

[0018] Furthermore, the middle platform and the lifting platform are also provided with a plurality of rigid limiting columns, the bottom of each rigid limiting column is fixedly connected to the middle platform, and the top can be pressed against the lifting platform for limiting.

[0019] Furthermore, the lifting platform is fixedly connected with a sensing sheet, and the middle platform and the top platform are respectively installed with a displacement sensor via a mounting frame.

[0020] The utility model can automatically shape the cutout of an ultra-high-strength "X"-shaped automobile seat crossbeam, has a simple structure, is easy to install and disassemble, and has relatively flexible and diverse stroke adjustment functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention. A person of ordinary skill in the art can obtain other relevant drawings based on these drawings without making any creative effort.

[0022] Figure 1 A three-dimensional schematic diagram of the product to be shaped;

[0023] Figure 2 It is a three-dimensional schematic diagram of the utility model;

[0024] Figure 3 It is a side view schematic diagram of the utility model;

[0025] Figure 4 It is a schematic diagram mainly showing the structure between the middle platform and the lifting platform;

[0026] Figure 5 A cross-sectional view mainly showing the adjustment components;

[0027] Figure 6 It is a three-dimensional schematic diagram of the upper mold insert;

[0028] Figure 7 is a three-dimensional schematic diagram of the base;

[0029] Figure 8 It is a three-dimensional schematic diagram of four sets of thrust units on both sides;

[0030] Fig. 9 for Figure 8 a schematic side view of the structure shown;

[0031] Fig.10 It is a three-dimensional schematic diagram of the shaping block and its sliding assembly;

[0032] Fig.11 for Fig.10 Exploded view of the structure shown.

[0033] Reference numerals in the figures:

[0034] Product 1; groove bottom 10; groove wall 11; outer wing 12; cutout 13;

[0035] Base 21; mounting surface 213; mounting groove 2125; receiving groove 2154; mounting surface 2155;

[0036] Intermediate platform 22; lifting platform 23; avoidance hole 231; top platform 24; side baffle 25; support column 26;

[0037] Lower die insert 3; upper die insert 4; blind hole 41; countersunk through hole 42;

[0038] shaping block 51; inclined surface 511; shaping head 512; receiving groove 513; slider protrusion 514; driving block 52; inclined surface 521; adjusting pad 522; sliding gasket 53; sliding gasket 54; guide pressing piece 55; reset nitrogen spring 56;

[0039] Hydraulic cylinder 61; nitrogen cylinder 62; rigid limit column 63; nitrogen spring 64 for holding;

[0040] Reset limiter assembly 65; connecting rod 651; elastic sleeve 652; large washer 653; small washer 654; bolt 655;

[0041] Displacement sensor 71; sensor sheet 72. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0043] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the application product is usually placed when in use, or is the orientation or position relationship commonly understood by technical personnel in this field. It is only for the convenience of describing the present invention or simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] The term "plurality" in the present invention refers to more than two (including two). The terms "first", "second" and the like are only used to distinguish descriptions and should not be understood as indicating or implying relative importance.

[0045] Unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0046] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0047] The utility model includes a base 21, the top support of the base 21 is fixedly connected with an intermediate platform 22, the top of the intermediate platform 22 is supported and fixed with a top platform 24 by four support columns 26, and the lifting platform 23 is located between the intermediate platform 22 and the top platform 24; the cylinder body of the hydraulic cylinder 61 is fixed on the top platform 24, the piston rod passes through the top platform 24 and abuts against the lifting platform 23 through a connecting piece, that is, the lifting platform 23 is driven to descend by the hydraulic cylinder 61, but the hydraulic cylinder 61 is not required to directly drive the lifting platform 23 to lift.

[0048] Combination Figure 4 and Figure 5 As shown, an upper mold insert 4 and a lower mold insert 3 are provided between the intermediate platform 22 and the base 21, wherein the lower mold insert 3 is fixed to a corresponding mounting surface 213 of the base 21 (see Figure 7 ), the upper die insert 4 is located directly above the lower die insert 3, and can be raised and lowered relative to the lower die insert 3 to achieve clamping and disengagement with the lower die insert 3.

[0049] Three nitrogen cylinders 62 and two sets of reset limiter components 65 are arranged above the upper mold insert 4;

[0050] Each nitrogen cylinder 62 passes through the middle platform 22 and leaves a movable gap therebetween. The top of the cylinder body of the nitrogen cylinder 62 is fixedly connected to the lower surface of the lifting platform 23, and the piston rod is in contact with the upper mold insert 4. Preferably, a blind hole 41 is provided on the upper mold insert 4 for the piston rod of the nitrogen cylinder 62 to be embedded and abutted, so as to prevent the piston rod from falling off and reduce the height of the mechanism.

[0051] Each set of reset limit stroke assembly 65 includes a connecting rod 651, which is slidably sleeved with a bearing sleeve, and the bearing sleeve is fixed to the intermediate platform 22, that is, the connecting rod 651 slides through the intermediate platform 22; the lower end of the connecting rod 651 located below the intermediate platform 22 is embedded in the countersunk through hole 42 of the upper die insert 4, and the lower end of the connecting rod 651 is fixed to the upper die insert 4 by a bolt 655; the outer sleeve of the connecting rod 651 located above the intermediate platform 22 is provided with an elastic sleeve 652, and the top of the connecting rod 651 is slidably sleeved with a large washer 653, and a small washer 654 fixed to the top of the connecting rod 651 by bolts plays a role in limiting and preventing the large washer 653 from falling off, and the upper and lower ends of the elastic sleeve 652 are respectively abutted against the large washer 653 and the intermediate platform 22, that is, the elastic sleeve 652 is sandwiched between the large washer 653 and the intermediate platform 22. The main function of the large washer 653 is to increase the force-bearing area at the top of the elastic sleeve 652 and make it evenly stressed.

[0052] Preferably, in order to further reduce the overall height of the mechanism, a clearance hole 231 is provided on the lifting platform 23 to accommodate and avoid the top of the adjustment component 65. Further, the clearance hole 231 is a stepped hole, the annular step of which can press against the large washer 653, and the fine hole section can allow the small washer and the top of the connecting rod 651 to pass without interference.

[0053] like Figure 4 As shown, the intermediate platform 22 and the lifting platform 23 are also provided with four rigid limit columns 63 and four retaining nitrogen springs 64, wherein the bottom of each rigid limit column 63 is fixedly connected to the intermediate platform 22, and the top can be pressed against the lifting platform 23 for limit; the cylinder body of each retaining nitrogen spring 64 is fixedly connected to the lifting platform 23, and the top end of the piston rod is pressed against the intermediate platform 22.

[0054] Combination Figures 8 to 10 As shown, a pair (two groups) of side push units are provided on the left and right sides of the clamping unit composed of the upper mold insert 4 and the lower mold insert 3 in the base 21, that is, there are four groups of side push units in total. The four groups of side push units use the driving power transmitted by the downward pressure of the lifting platform 23 to move synchronously. The two groups of side push units on the same side correspond to the groove walls 11 on both sides of the side incision of the product respectively. The four groups of side push units on both sides synchronously push the groove walls 11 on both sides toward the center in the horizontal direction, thereby shaping the groove walls at the incision. Specifically:

[0055] Each set of side push units includes: a driving block 52 that is slidably connected to each other and can slide in the vertical direction and a shaping block 51 that can slide in the horizontal direction. The driving block 52 slides through the intermediate platform 22 and is connected to the top of an adjustment pad 522 whose thickness can be changed according to the travel requirements. The top of the driving block 52 abuts against the lower surface of the lifting platform 23 through the adjustment pad 522. The ends of the driving block 52 and the shaping block 51 that are slidably connected to each other are 45-degree inclined surfaces (521, 511). The end of the shaping block 51 that faces the product to be shaped (or the lower mold insert 3 of the clamping unit) is formed with a wedge-shaped shaping head 512, and the shaping head 512 is responsible for abutting against the groove wall 11.

[0056] A return nitrogen spring 56 is provided between the shaping block 51 and the base to enable the shaping block 51 to return and slide in a direction away from the lower mold insert 3 of the clamping unit. Figure 7 , Fig.10 and Fig.11 As shown, the lower part of the shaping block 51 is accommodated by the receiving groove 2154 opened by the base 21, and the bottom of both sides of the shaping block 51 in the sliding direction are respectively provided with slider protrusions 514, and the guide pressing sheet 55 fixed on the mounting surface 2155 presses against the slider protrusions 514, thereby realizing the sliding guidance and anti-dropping effect of the shaping block 51. The lower end surface of the shaping block 51 is slidably connected with the sliding gasket 54 fixed to the bottom of the receiving groove 2154 of the base to reduce wear and facilitate replacement; the reset nitrogen spring 56 is accommodated in the receiving groove 513 opened at the lower part of the shaping block 51, and one end of the reset nitrogen spring 56 abuts against the shaping block 51, and the other end abuts against the receiving groove 2154 of the base, providing a reset force for the shaping block 51.

[0057] The slots formed by the middle platform 22 and the mounting surface 2125 fixed to the side of the base 21 (see Figure 7 ) form a channel for the driving block 52 to pass through the middle platform 22 and guide its lifting. When the driving block 52 is lifted or lowered, it is pressed against the side baffle 25 by the force of the return nitrogen spring 56 transmitted by the shaping block 51, so a sliding gasket 53 fixed to the side baffle 25 is provided between the side baffle 25 and the driving block 52 to reduce wear and facilitate replacement.

[0058] like Figure 2 As shown, the lifting platform 23 is fixed with a sensing sheet 72, and the middle platform 22 and the top platform 24 are each installed with a displacement sensor 71 through a mounting frame, which is used to monitor whether the lifting stroke of the lifting platform is in place.

[0059] Working principle:

[0060] The hydraulic cylinder 61 is pressurized to drive the lifting platform 23 downward;

[0061] On the one hand, the lifting platform 23 drives the three nitrogen cylinders 62 to press down, and the nitrogen cylinders 62 drive the upper mold insert 4 to press down. The connecting rod 651 of the reset limiter assembly 65 is slidably connected with the bearing sleeve fixed to the intermediate platform 22, providing guidance for the lifting of the upper mold insert 4. The rigid limit column 63 provides a limit for the lowering stroke of the lifting platform 23. The upper mold insert 4 and the lower mold insert 3 clamp the groove bottom 10 of the product 1 to be shaped. The three nitrogen cylinders 62 provide a slightly elastic buffer downward pressure for the upper mold insert 4 to avoid the clamping damage of the upper mold insert 4 and the lower mold insert 3 to the product 1 caused by rigid direct connection conduction;

[0062] On the other hand, the lifting platform 23 descends to drive the driving blocks 52 of the side push units on both sides to press downward, and the inclined surface of the driving block 52 slides against the inclined surface of the shaping block 51, driving the shaping block 51 to move horizontally toward the lower mold insert 3, see Fig. 9 , the groove walls on both sides of the product 1 are squeezed inwards for a certain stroke through the shaping head 512;

[0063] After the extrusion shaping is completed, the hydraulic cylinder 61 is controlled to release pressure, and the four nitrogen springs 64 for holding provide power for the lifting platform 24 to rise, and provide support force to maintain the position after the lifting platform 24 rises to the right position; on the one hand, under the rebound force of the elastic sleeve 652 of the reset limit component 65, the connecting rod 651 is driven to rise through the large washer 653 and the small washer 654, and the connecting rod 651 drives the upper mold insert 4 to lift a certain stroke, and the lifting stroke only needs to meet the gap between the upper mold insert 4 and the lower mold insert 3, which is enough to extract the previous product and insert the next product;

[0064] On the other hand, under the action of the rebound force of the reset nitrogen spring 56 of each group of side thrust units, the shaping block 51 slides outward and resets until the shaping head 512 is separated from the pressure against the groove wall of the product 1, and the groove walls on both sides of the product 1 rebound to a certain extent, meeting the shaping requirements.

[0065] Regarding the reset limit stroke assembly 65: During the descent of the lifting platform 23, the annular step of the avoidance hole 231 presses against the large washer 653, the elastic sleeve 652 is compressed and retracted, and the fine hole section allows the small washer and the top of the connecting rod 651 to pass without interference. The large washer 653 and the connecting rod 651 are slidably sleeved, so the descent of the large washer 653 will not directly drive the connecting rod 651 to descend, and the connecting rod 651 only passively descends with the upper mold insert 4. During the ascent of the lifting platform 23, the nitrogen cylinder 62 is not responsible for driving the lifting of the upper mold insert 4, mainly because the nitrogen cylinder 62 is not convenient for adjusting and controlling the lifting stroke of the upper mold insert 4. Therefore, the utility model designs a reset limit stroke assembly 65 to drive the lifting of the upper mold insert 4, and the lifting stroke of the upper mold insert 4 can be adjusted by adjusting the compression of the elastic sleeve 652, the length of the connecting rod 651, the length of the bolt at the bottom of the connecting rod 651 and the screw connection with it, and other means.

[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 in the protection scope of the present invention.

Claims

1. A cold-formed ultra-high-strength plate rebound treatment side-thrust shaping device, characterized in that: include: The base has a top support fixedly connected with an intermediate platform and a top platform, the lifting platform is located between the intermediate platform and the top platform, a hydraulic cylinder is fixed on the top platform, and a piston rod of the hydraulic cylinder passes through the top platform and abuts against the lifting platform through a connecting piece; The lower die insert is fixed on the base, and the upper die insert is located directly above the lower die insert and can be clamped and separated from the lower die insert by lifting and lowering; A plurality of nitrogen cylinders and a plurality of reset limit stroke components are arranged above the upper die insert; Each nitrogen cylinder passes through the middle platform and leaves a movable gap therebetween, the cylinder body is fixedly connected to the lifting platform, and the piston rod is in contact with the upper mold insert; Each set of reset limit stroke components includes a connecting rod, which slides through the middle platform; the lower end of the connecting rod is fixed to the upper die insert; the connecting rod sleeve located above the middle platform is provided with an elastic sleeve, the top of the connecting rod is slidably sleeved with a large washer, and the top of the connecting rod is fixed with a small washer that plays a role in limiting and preventing the large washer from falling off; the upper and lower ends of the elastic sleeve are respectively in contact with the large washer and the middle platform; It also includes a plurality of nitrogen springs for holding, wherein the cylinder body of each nitrogen spring for holding is fixedly connected to the lifting platform, and the top end of the piston rod is in contact with the middle platform; Two sets of side push units are arranged on the left and right sides of the lower mold insert in the base. The four sets of side push units move synchronously using the driving power transmitted by the downward pressure of the lifting platform. The two sets of side push units on the same side correspond to the groove walls on both sides of the product incision.

2. A cold-formed ultra-high-strength plate springback treatment side-thrust shaping device according to claim 1, characterized in that: Each set of side thrust units includes: a driving block that is slidably connected to each other and can slide in the vertical direction and a shaping block that can slide in the horizontal direction. The driving block slides through the intermediate platform and is connected to the top of an adjustment pad with replaceable thickness according to the travel requirements. The top of the driving block is in contact with the lower surface of the lifting platform through the adjustment pad; the end where the driving block and the shaping block are slidably connected to each other is a 45-degree inclined surface; a reset nitrogen spring is provided between the shaping block and the base, which can reset the shaping block to slide away from the lower mold insert.

3. A cold-formed ultra-high-strength plate springback treatment side-thrust shaping device according to claim 2, characterized in that: The lower part of the shaping block is accommodated by the receiving groove opened by the base, and slider protrusions are respectively provided at the bottom of both sides of the shaping block in the sliding direction, and the slider protrusions are pressed against by the guide pressing pieces fixed on the base; the lower end surface of the shaping block is slidably connected with the sliding gasket fixed to the bottom of the receiving groove of the base; the reset nitrogen spring is accommodated in the receiving groove opened at the lower part of the shaping block, and one end of the reset nitrogen spring abuts against the shaping block, and the other end abuts against the receiving groove of the base.

4. The cold-formed ultra-high-strength plate rebound treatment side-thrust shaping device according to claim 2 is characterized in that: The channel formed by the notch opened in the middle platform and the side baffle plate fixed on the side of the base is used for the driving block to pass through the middle platform and guide the lifting of the driving block.

5. The cold-formed ultra-high-strength plate springback treatment side-thrust shaping device according to claim 4 is characterized in that: A sliding gasket fixed to the side baffle is arranged between the side baffle and the driving block.

6. The cold-formed ultra-high-strength plate springback treatment side-thrust shaping device according to claim 1 is characterized in that: The upper die insert is provided with a blind hole for contacting with the piston rod embedding sticker of the nitrogen cylinder.

7. The cold-formed ultra-high-strength plate springback treatment side-thrust shaping device according to claim 1 is characterized in that: The lower end of the connecting rod is embedded in the countersunk through hole of the upper die insert, and the lower end of the connecting rod is fixed to the upper die insert by bolts.

8. The cold-formed ultra-high-strength plate springback treatment side-thrust shaping device according to claim 1 is characterized in that: The lifting platform is also provided with an avoidance hole for accommodating and avoiding the top of the adjustment component. The avoidance hole is a step hole, and its annular step can press against the large washer, and the fine hole section can allow the small washer and the top of the connecting rod to pass without interference.

9. The cold-formed ultra-high-strength plate springback treatment side-thrust shaping device according to claim 1 is characterized in that: The middle platform and the lifting platform are also provided with a plurality of rigid limiting columns, the bottom of each rigid limiting column is fixedly connected to the middle platform, and the top can be pressed against the lifting platform for limiting.

10. The cold-formed ultra-high-strength plate springback treatment side-thrust shaping device according to claim 1, characterized in that: The lifting platform is fixed with a sensing sheet, and the middle platform and the top platform are respectively installed with a displacement sensor via a mounting frame.

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