Material supporting structure for preventing drawing die plate from collapsing

Abstract

The utility model provides a material supporting structure for preventing a drawing die plate from collapsing, which comprises a mounting plate arranged on a male die vertical rib of a lower die base; the jacking component comprises a connecting plate, a jacking connecting rod and a material supporting rod, the connecting plate is arranged on the mounting plate, the jacking connecting rod is arranged below the connecting plate and makes contact with a jacking rod of a machine tool, the material supporting rod is arranged on the connecting plate, and the top end of the material supporting rod penetrates to the position above the male die molded surface; the fixing plate is arranged below the male die molded surface and is arranged on the material supporting rod in a sleeving manner; and the reset spring is arranged on the material supporting rod in a sleeving mode and located between the fixing plate and the connecting plate. According to the drawing die, the supporting fulcrums are additionally arranged on the lower die, so that the problem that a drawing die plate collapses and a workpiece wrinkles and deforms is solved, and the product precision and the stamping part quality are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of stamping dies, and particularly relates to a material supporting structure for preventing material collapse of a drawing die. BACKGROUND

[0002] In order to meet the requirements of strength, function, shape and the like, the shape of an automobile covering part is very complex. With the rapid development of the automobile industry, stamping dies are more and more important in the development of a whole vehicle, and more and more automobile manufacturers increase preacceleration and pressure building in the stamping process of the drawing process to reduce the wear of a punch press, thereby prolonging the service life of the punch press and the die. In order to accumulate pressure in the air cushion under the punch press in advance, when the die is lowered to a certain height but has not contacted a workpiece, the punch press moves downward at a certain speed to accumulate kinetic energy in advance, so that the pressure building process is more smooth. Through preacceleration and pressure building, the punch press has accumulated a certain kinetic energy before contacting the workpiece, which makes the pressure building process more stable, reduces impact and vibration, and improves the precision and quality of stamping, so that the automobile manufacturers have the requirement of increasing a preacceleration stroke of 16 mm and a pressure building stroke of 16 mm for the drawing die. The requirement has caused some influences on the stamping forming process of the drawing die, for example, the blank holder ring is lifted out by 16+16=32 mm on the basis of the original lifting stroke, the middle position collapses due to insufficient strength of the blank before forming, and too much blank is gathered at the middle position, the excess blank gathered in the blank forming process cannot be dissipated, and the surface of the formed part appears wrinkling and deformation.

[0003] At present, in the stamping forming process of the drawing die on the blank, the following shortcomings mainly exist:

[0004] 1) The formed part is wrinkled due to the collapse of the blank in the middle, the state of the stamped part is unstable, and the die is difficult to debug;

[0005] 2) The formed part is wrinkled, the product cannot meet the requirements of customers, and the product qualification rate is low;

[0006] 3) The formed part is wrinkled, the wear of the die is increased, and the service life of the die is reduced. CONTENT OF THE UTILITY MODEL

[0007] Therefore, the application aims to provide a material supporting structure for preventing material collapse of a drawing die to solve at least one of the above problems.

[0008] To achieve the above object, the technical scheme of the application is as follows:

[0009] The application provides a material supporting structure for preventing material collapse of a drawing die, which comprises:

[0010] A mounting plate is arranged on the punch stud of the lower die seat.

[0011] The jacking member comprises a connecting plate, a jacking rod and a material supporting rod, wherein the connecting plate is arranged on the mounting plate, the jacking rod is arranged below the connecting plate and in contact with the top rod of the machine tool, and the material supporting rod is arranged on the connecting plate and penetrates above the convex model surface at the top end thereof;

[0012] The fixed plate is arranged below the convex model surface and sleeved on the material supporting rod;

[0013] The reset spring is sleeved on the material supporting rod and located between the fixed plate and the connecting plate.

[0014] Further, the number of the jacking rods is at least two, and the two jacking rods are respectively arranged at the two sides of the bottom of the connecting plate and have a gap in the middle for mounting the mounting plate.

[0015] Further, the top end of the jacking rod is threadedly connected with the connecting plate, and the bottom end of the jacking rod is in contact with the top end of the top rod of the machine tool.

[0016] Further, at least two first guide sleeves are arranged in the mounting plate, a guide rod is fitted and mounted in the first guide sleeve, the guide rod comprises a connecting column and a guide portion arranged at the top end of the connecting column, and the guide portion is in a cylindrical structure.

[0017] The bottom end of the connecting plate is provided with a guide hole matched with the guide portion.

[0018] Further, the fixed plate is fixedly arranged below the convex model surface, a second guide sleeve is arranged at the central position of the fixed plate, and the material supporting rod is fitted into the second guide sleeve.

[0019] Further, the connecting plate is in a convex structure, an inner hole is arranged at the upper end surface of the connecting plate,

[0020] The top end of the material supporting rod is arranged in an arc shape, the bottom end of the material supporting rod is provided with a protruding portion, and the protruding portion is threadedly connected with the inner hole.

[0021] Further, one end of the reset spring is in abutment with the connecting plate, and the other end is in abutment with the fixed plate.

[0022] Compared with the prior art, the material supporting structure for preventing the material from falling in the drawing die has the following beneficial effects:

[0023] The material supporting structure for preventing plate material from collapsing in a drawing die increases supporting points of the material in a lower die, solves the problems of collapsing and wrinkling of the product caused by insufficient strength, effectively improves the stability of the stamping product, the product precision and the quality of the stamping product, and meets the customer demand for the qualified rate of the processed product, and reduces the difficulty of mold debugging and service life. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The accompanying drawings should not be regarded as a limitation of the present application. In the drawings:

[0025] Figure 1 A material supporting structure for preventing plate material from collapsing in a drawing die and a lower die seat overall structure diagram according to the embodiment of the present application;

[0026] Figure 2 A material supporting structure for preventing plate material from collapsing in a drawing die and a lower die seat overall structure diagram according to the embodiment of the present application;

[0027] Figure 3 A material supporting structure for preventing plate material from collapsing in a drawing die and a lower die seat overall structure diagram according to the embodiment of the present application;

[0028] Figure 4 An installation plate, a jacking connecting rod, a first guide sleeve and a guide rod structure diagram according to the embodiment of the present application;

[0029] Figure 5 A material supporting structure for preventing plate material from collapsing in a drawing die and a lower die seat overall structure diagram according to the embodiment of the present application;

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 1 - installation plate; 2 - connecting plate; 3 - jacking connecting rod; 4 - material supporting rod; 41 - protruding part; 5 - fixed plate; 6 - reset spring; 7 - first guide sleeve; 8 - guide rod; 81 - connecting column; 82 - guide part; 9 - second guide sleeve; 10 - lower die seat. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below with reference to the embodiments and the accompanying drawings.

[0033] It should be noted that, unless otherwise defined, technical or scientific terms used in the embodiments of the present application should be understood as having the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments of the present application belong. The terms "first", "second" and similar terms used in the embodiments of the present application do not denote any order, quantity or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.

[0034] Referring to Figures 1 to 3 As shown in the drawings, the embodiments provide a blank supporting structure for preventing the middle position of the blank from collapsing in a drawing die, which comprises:

[0035] A mounting plate 1 is arranged on the punch riser of the lower die seat 10;

[0036] A jacking member comprises a connecting plate 2, a jacking rod 3 and a blank supporting rod 4, wherein the connecting plate 2 is arranged on the mounting plate 1, the jacking rod 3 is arranged below the connecting plate 2 and in contact with the top rod of the machine tool, and the blank supporting rod 4 is arranged on the connecting plate 2, with the top end of the blank supporting rod 4 penetrating above the drawing surface of the punch;

[0037] A fixing plate 5 is arranged below the drawing surface of the punch and sleeved on the blank supporting rod 4;

[0038] A reset spring 6 is sleeved on the blank supporting rod 4 and located between the fixing plate 5 and the connecting plate 2.

[0039] Specifically, in the embodiments, the jacking rod 3 is jacked up by controlling the action of the top rod of the machine tool, so as to drive the connecting plate 2 to move up and down, and thus the top of the blank supporting rod 4 lifts the middle position of the blank. Therefore, the supporting structure increases the blank supporting point on the lower die seat 10, solves the problem that the middle position of the blank collapses due to insufficient strength before the blank is formed, so that too much blank gathers at the middle position, the excess blank gathered during the forming process of the blank cannot be dissipated, and the surface of the formed blank appears wrinkling and deformation. The supporting structure effectively improves the stability of the stamped part, the product precision and the quality of the stamped part, and the qualified rate of the processed product meets the customer's demand.

[0040] In some embodiments, the number of jacking rods 3 is at least two, and the two jacking rods 3 are arranged at the two side positions of the bottom of the connecting plate 2, with a gap reserved in the middle for installing the mounting plate 1.

[0041] The top end of the jacking connecting rod 3 is threadedly connected with the connecting plate 2, and the bottom end of the jacking connecting rod 3 is in contact with the top rod of the machine tool.

[0042] Specifically, in the embodiment, as shown in Figure 3 , two jacking connecting rods 3 are taken as an example for explanation and illustration, two jacking connecting rods 3 are arranged at the bottom end of the connecting plate 2, and a gap for arranging the mounting plate 1 is reserved between the two jacking connecting rods 3, and meanwhile, the two sides of the mounting plate 1 are provided with notches matched with the outer walls of the jacking connecting rods 3, and the jacking connecting rods 3 do not affect the mounting plate 1 when the jacking connecting rods 3 act.

[0043] The top end of the jacking connecting rod 3 is threadedly connected with the connecting plate 2, and the bottom end of the jacking connecting rod 3 is in contact with the top rod of the machine tool.

[0044] In some embodiments, at least two first guide sleeves 7 are arranged in the mounting plate 1, and a guide rod 8 is fitted in the first guide sleeve 7, the guide rod 8 comprises a connecting column 81 and a guide portion 82 arranged at the top end of the connecting column 81, and the guide portion 82 is a cylindrical structure.

[0045] The bottom end of the connecting plate 2 is provided with a guide hole matched with the guide portion 82.

[0046] Specifically, in the embodiment, as shown in Figure 3 and Figure 4 , in order to ensure that the material supporting rod 4 moves stably up and down, the guide rod 8 is arranged on the mounting plate 1, and since the material supporting rod 4 is fixedly connected with the connecting plate 2, the connecting plate 2 moves stably along the guide portion 82 of the upper end of the guide rod 8 when the jacking connecting rod 3 moves up and down, thereby realizing stable movement of the whole process without deviation, ensuring that the material supporting rod 4 effectively supports the plate material and plays a role of a supporting point.

[0047] In some embodiments, the fixed plate 5 is fixedly arranged below the convex model surface, a second guide sleeve 9 (the model of the first guide sleeve 7 and the second guide sleeve 9 in the embodiment is PUNCH-PCGB 30-50-50-SP) is arranged at the central position of the fixed plate 5, and the material supporting rod 4 is fitted into the second guide sleeve 9.

[0048] The connecting plate 2 is in a convex structure, the upper end surface of the connecting plate 2 is provided with an inner hole, the top end of the material supporting rod 4 is arranged in an arc shape, the bottom end of the material supporting rod 4 is provided with a protruding portion 41, and the protruding portion 41 is threadedly connected with the inner hole (the guide hole and the inner hole arranged on the connecting plate are not shown in the drawings).

[0049] Specifically, in the embodiment, as shown in Figure 5As shown, the fixed plate 5 is fixedly arranged below the convex model surface by screws, and the second guide sleeve 9 is arranged in the inner hole of the fixed plate 5, and the material supporting rod 4 is correspondingly arranged in the second guide sleeve 9, the bottom end of the material supporting rod 4 is provided with a protruding portion 41 for threaded connection with the connecting plate 2, and in the jacking process, the material supporting rod 4 can move up and down in the guide sleeve, playing an auxiliary role.

[0050] It should be noted that the mounting plate 1, the connecting plate 2, the jacking connecting rod 3, the guide rod 8, the material supporting rod 4 and the mounting plate 1 in the embodiment are all made of 45 steel, which has certain plasticity and toughness, high strength, and good processability.

[0051] In some embodiments, one end of the reset spring 6 abuts against the connecting plate 2, and the other end abuts against the fixed plate 5.

[0052] Specifically, in the embodiment, as shown, Figure 3 In the embodiment, a reset spring 6 with an outer diameter of 38, a wire diameter of 2.5 and a length of 200 mm is used, the reset spring 6 is sleeved on the material supporting rod 4, when the top rod of the machine tool jacks up the jacking connecting rod 3, the connecting plate 2 moves upward, and at this time, the reset spring 6 is continuously compressed; after the jacking is completed, the top rod of the machine tool returns, and then under the elastic force of the reset spring 6, the connecting plate 2 is restored to the initial position to perform the next lifting process.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered in the scope of the claims and the specification of the present application.

[0054] The embodiments of the present application are intended to cover all such replacements, modifications and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A blank support structure for preventing draw die blank collapse, comprising: The utility model relates to a kind of support structures for preventing blank collapse of drawing die, including: Mounting plate, the mounting plate is arranged on the male die stud of lower die holder; Jacking component, the jacking component includes connecting plate, jacking connector and material supporting rod, wherein the connecting plate is arranged on the mounting plate, the jacking connector is arranged below the connecting plate, and is contacted with the top rod of machine tool, the material supporting rod is arranged on the connecting plate, and the top end of the material supporting rod penetrates to above the male die surface; Fixed plate, the fixed plate is arranged below the male die surface, and is sleeved on the material supporting rod; Reset spring, the reset spring is sleeved on the material supporting rod, and is located between the fixed plate and the connecting plate.

2. The support structure for preventing blank collapse of drawing die according to claim 1, wherein: The number of the jacking connector is at least two, and the two jacking connectors are arranged on both sides of the bottom of the connecting plate with a gap for installing the mounting plate in the middle.

3. The support structure for preventing blank collapse of drawing die according to claim 1, wherein: The top end of the jacking connector is threadedly connected with the connecting plate, and the bottom end of the jacking connector is contacted with the top end of the top rod of the machine tool.

4. The support structure for preventing blank collapse of drawing die according to claim 1, wherein: At least two first guide sleeves are installed in the mounting plate, a guide rod is fitted and installed in the first guide sleeve, the guide rod includes a connecting column and a guide portion arranged at the top end of the connecting column, and the guide portion is in cylindrical structure; A guide hole matched with the guide portion is formed at the bottom end of the connecting plate.

5. The support structure for preventing blank collapse of drawing die according to claim 1, wherein: The fixed plate is fixedly arranged below the male die surface, a second guide sleeve is installed at the central position of the fixed plate, and the material supporting rod is fitted into the second guide sleeve.

6. The support structure for preventing blank collapse of drawing die according to claim 1, wherein: The connecting plate is in convex structure, an inner hole is formed at the upper end face of the connecting plate, The top end of the material supporting rod is arranged in arc shape, the bottom end of the material supporting rod is provided with a protruding portion, and the protruding portion is threadedly connected with the inner hole.

7. The support structure for preventing blank collapse of drawing die according to claim 1, wherein: One end of the reset spring is abutted with the connecting plate, and the other end is abutted with the fixed plate.

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