A roll forming device

Abstract

The present application relates to the technical field of round bending stamping device, and discloses a round bending stamping device, which solves the problems of increased processing procedures and poor forming appearance of the cylindrical material caused by the springback of internal stress in the existing round bending stamping device. Through the collaborative work of the operation table, the die mechanism, the die core mechanism and the feeding mechanism, efficient round bending forming of the plate is realized. The device drives the upper die and the lower die to cooperate by using the hydraulic cylinder, and the plate is stamped into round bending one and round bending two in two steps to avoid springback. The core rod in the die core mechanism is fixed, and the core sleeve is movable, so that automatic sleeving, transfer and discharging of round bending one are realized. The support structure cooperates with the misaligned grooves to ensure the accurate misalignment and overlap of the two ends of the round bending. The feeding mechanism adopts the continuous feeding of the friction roller, and the two-step procedures are parallel, and the efficiency is equivalent to one-time forming.

Description

Technical Field

[0001] This invention relates to the field of rolling and stamping equipment, specifically to a rolling and stamping equipment. Background Technology

[0002] A rolling stamping machine is a specialized piece of equipment used to roll metal sheets or other materials into round or other shapes using a stamping process. It is widely used in industries such as automotive, home appliances, and machinery manufacturing to produce various round or cylindrical parts.

[0003] The die is an important component of the rolling stamping device, used to shape materials. The die consists of an upper die, a lower die, and a die core. The upper die is mounted on the movable base of the stamping machine, the lower die is mounted on the worktable of the stamping machine, and the die core is located between the upper and lower dies. When the three are combined, they form an annular groove. When a sheet metal is stamped and squeezed into the annular groove, it will bend into a cylindrical shape.

[0004] After the metal sheet is stamped into a cylindrical material in the annular groove, due to the internal stress of the metal, the cylindrical material will spring back after the upper die, lower die, and die core separate. Subsequently, auxiliary tools are needed to press it to form a complete circle. On the one hand, this increases the number of processing steps, and on the other hand, the auxiliary tools will cause the roundness of the cylindrical material to decrease, resulting in a poorer appearance.

[0005] Therefore, the present invention provides a rolling and stamping apparatus to solve the problems mentioned in the background art. Summary of the Invention

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rolling and stamping device, comprising an operating table, the operating table comprising a base, and a hydraulic cylinder mounted on the base via a bracket;

[0007] The mold mechanism includes a lower mold 1 and a lower mold 2 fixedly mounted on the upper surface of a base. An upper mold 1 and an upper mold 2 are correspondingly arranged above the lower mold 1 and the upper mold 2. The upper mold 1 and the upper mold 2 are mounted on the output end of a hydraulic cylinder 1 via a movable seat. When the lower mold 1 and the upper mold 1 are combined, a circular groove 1 is formed on the inner side. When the lower mold 2 and the upper mold 2 are combined, a circular groove 2 is formed on the inner side. The inner diameter of the circular groove 2 is smaller than that of the circular groove 1, and the two are coaxial. A misalignment groove is provided on the inner side of the lower mold 2.

[0008] The core mechanism is assembled in the middle of the lower mold one, the upper mold one, the lower mold two, and the upper mold two. The core mechanism includes a core rod that moves up and down. A core sleeve is movably sleeved on the surface of the core rod. The core sleeve is normally located between the lower mold one and the lower mold two.

[0009] The upper die two core rod stamping plate material, the plate material is initially bent, then, the plate material two ends are again by the lower die two stamping, staggered slot makes the plate material two ends staggered overlap, forming a round one, finally, the movable core sleeve will be sent into the lower die one, the upper die one stamping interval, stamping into a round two.

[0010] As a further description of the above technical solution: the mold core mechanism further comprises a side support seat, the side support seat is assembled on the upper surface of the pedestal through a plurality of support assemblies arranged on both sides, the side support seat supported by the support assembly moves vertically above the pedestal, and the core rod is fixedly assembled on one side of the side support seat.

[0011] As a further description of the above technical solution: the surface of the side support seat is provided with a movable groove in the horizontal direction, a sliding block is slidably arranged in the inner side of the movable groove, the sliding block is fixedly connected with the inner wall of the core sleeve sleeved on the surface of the core rod, a hydraulic cylinder two is assembled on the side of the side support seat away from the core rod, the output end of the hydraulic cylinder two extends into the inner side of the movable groove and is fixedly connected with the sliding block.

[0012] As a further description of the above technical solution: the annular port of the core sleeve close to the side support seat is provided with a tapered surface.

[0013] As a further description of the above technical solution: the arc surface of the core rod close to one end of the side support seat is fixedly provided with a limiting block, and a matching groove is formed in one end of the core sleeve.

[0014] As a further description of the above technical solution: a support structure is arranged on one side of the side support seat and below the upper die two, used for supporting the plate material, the support structure supports the plate material above the lower die one, so that when the plate material is preliminarily bent by the upper die two, one end of the plate material in contact with the staggered groove is closer to the lower side than the other end.

[0015] As a further description of the above technical solution: the support structure comprises a first supporting plate and a second supporting plate elastically rotatably assembled on both sides of the side support seat, a stop block is fixedly arranged on the upper side of the second supporting plate, the stop block is used for limiting the position of one end of the plate material when the first supporting plate and the second supporting plate support the plate material, and one positioning plate is arranged on each of the two sides of the side support seat, the positioning plate is used for limiting the first supporting plate and the second supporting plate, so that the upper surfaces of the first supporting plate and the second supporting plate elastically rotatably assembled remain in a horizontal state.

[0016] As a further description of the above technical solution: one side of the support is further provided with a feeding mechanism for continuously feeding the plate material, and the feeding mechanism is arranged on the side close to the first supporting plate.

[0017] As a further description of the above technical solution: the feeding mechanism comprises a material supporting plate fixedly assembled on one side of the support, a friction roller driven to rotate by a servo motor is arranged above the material supporting plate, and the upper surface of the material supporting plate is parallel to the upper surface of the lower support seat at the initial height.

[0018] To sum up, due to the adoption of the technical scheme, the beneficial effects of the present application are: the coiling stamping device realizes efficient coiling forming of the plate through the cooperative work of the operation table, the die mechanism, the die core mechanism and the feeding mechanism. The device drives the upper die and the lower die to cooperate by using the hydraulic cylinder, and stamps the plate into coiling one and coiling two in two steps to avoid springback. The core rod in the die core mechanism is fixed, and the core sleeve is movable, realizing automatic splicing, transferring and discharging of coiling one. The support structure cooperates with the misaligned grooves to ensure the accurate misalignment and overlap of the two ends of the coiling. The feeding mechanism adopts a friction roller for continuous feeding, and the two-step process is parallel, with the same efficiency as one-time forming. The overall structure is compact and has high automation degree. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall front structure of the present application;

[0020] Figure 2 It is a schematic diagram of the overall back structure of the present application;

[0021] Figure 3 It is a schematic diagram of the state of coiling one stamping of the present application;

[0022] Figure 4 It is a schematic diagram of the operation table and die mechanism structure of the present application;

[0023] Figure 5 It is an enlarged schematic diagram of A in the present application; Figure 4

[0024] Figure 6 It is a schematic diagram of the die core mechanism structure of the present application;

[0025] Figure 7 It is a schematic diagram of the disassembled structure of the die core mechanism of the present application;

[0026] Figure 8 It is a schematic diagram of the die closing state of the upper die one and the lower die one of the present application;

[0027] Figure 9 It is a schematic diagram of the die closing state of the upper die two and the lower die two of the present application.

[0028] ​In the figure: 10, operation platform; 11, pedestal; 12, support; 13, hydraulic cylinder one; 20, die mechanism; 21, lower die one; 22, upper die one; 23, lower die two; 231, staggered groove; 24, upper die two; 25, movable seat; 26, guide rod one; 27, ejector pin; 30, core mechanism; 31, core rod; 311, movable groove; 312, limit block; 32, side support seat; 321, support assembly; 322, positioning plate; 33, core sleeve; 331, conical surface; 332, slider; 333, fitting groove; 34, supporting plate one; 35, supporting plate two; 351, stop block; 36, hydraulic cylinder two; 40, feeding mechanism; 41, material supporting plate; 42, friction roller; 51, plate; 52, round one; 53, round two. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] In order to further understand the present application, the present application will be described in detail with reference to the drawings.

[0031] In combination with Figures 1-9 A round stamping device, comprising:

[0032] The operation platform 10 comprises the pedestal 11, and the hydraulic cylinder one 13 is assembled above the pedestal 11 through the support 12;

[0033] The die mechanism 20 comprises the lower die one 21 and the lower die two 23 fixedly assembled on the upper surface of the pedestal 11, and the upper die one 22 and the upper die two 24 correspondingly arranged above the lower die one 21 and the lower die two 23, wherein the upper die one 22 and the upper die two 24 are assembled at the output end of the hydraulic cylinder one 13 through the movable seat 25, the movable seat 25 is provided with the guide rod one 26 on both sides for guiding the movement path thereof, the lower die one 21 and the upper die one 22 are combined to form a circular groove one on the inner side, the lower die two 23 and the upper die two 24 are combined to form a circular groove two on the inner side, the inner diameter of the circular groove two is smaller than that of the circular groove one, and the two are in coaxial state, and the lower die two 23 is provided with the staggered groove 231 on the inner side;

[0034] The mold core mechanism 30 is assembled in the middle of the lower die 1, the upper die 1, the lower die 2, and the upper die 2. The mold core mechanism 30 includes an upper and lower movable core rod 31, and the core rod 31 is movably sleeved with a core sleeve 33. The core sleeve 33 is normally located in the middle of the lower die 1 and the lower die 2. The mold core mechanism 30 further includes a side support seat 32, which is assembled on the upper surface of the pedestal 11 through a plurality of support assemblies 321 arranged on both sides. The support assembly 321 is preferably a spring support member. The side support seat 32 supported by the support assembly 321 can move vertically above the pedestal 11, and the core rod 31 is fixedly assembled on one side of the side support seat 32.

[0035] Specifically, the movable seat 25 is pushed by the hydraulic cylinder 1, so that the downward moving upper die 2 cooperates with the core rod 31 to perform stamping on the plate 51 between them. The plate 51 is bent and deformed along the middle part, and is preliminarily stamped into a U shape. The two ends of the U-shaped plate 51 are downward;

[0036] It should be noted that the elastic force of the support assembly 321 supporting the side support seat 32 is much greater than the elastic resistance generated when the plate 51 is preliminarily bent, so that the core rod 31 and the upper die 2 can be smoothly matched to preliminarily bend the plate 51;

[0037] Subsequently, under the continuous pushing of the hydraulic cylinder 1, the upper die 2 pushes the core rod 31 to move downward against the elastic force of the support assembly 321, and the two ends of the plate 51 are guided by the upper side inclined surface of the lower die 2 into the arc-shaped groove, as shown in Figure 9 With the continuous advancement of the hydraulic cylinder 1, the two ends of the plate 51 slide downward along the inner wall of the arc-shaped groove of the lower die 2. When one end of the plate 51 comes into contact with the staggered groove 231, it can no longer advance, but the other end continues to advance, so that the two ends of the plate 51 are in a staggered overlapping state, forming a round 1, and the plate 51 is bent into a round 1. After the lower die 2 and the upper die 2 are released, the round 1 still has overlapping parts under the inner stress.

[0038] Finally, in the state that the lower die 2 and the upper die 2 release the round 1, the movable core sleeve 33 sleeves the round 1 on the surface and then sends it into the stamping interval of the lower die 1 and the upper die 1, as shown in Figure 8 Only the cooperation between the lower die 1, the upper die 1, and the core sleeve 33 can stamp the round 1 into a round 2 with a roundness that meets the predicted roundness. Since the inner stress of the round 1 is uniformly maintained in the process of stamping the round 1 into the round 2, the round 2 formed later will not have the phenomenon of springback.

[0039] In combination Figures 3-7 For the movement control of the core sleeve 33 on the surface of the core rod 31, the specific structure and control principle are as follows:

[0040] The side support base 32 is provided with a movable groove 311 in the horizontal direction, and a sliding block 332 is slidably arranged in the movable groove 311. The sliding block 332 is fixedly connected to the inner wall of a core sleeve 33 sleeved on the surface of the core rod 31. The side support base 32 is provided with a hydraulic cylinder two 36 on the side away from the core rod 31. The output end of the hydraulic cylinder two 36 extends into the inner side of the movable groove 311 and is fixedly connected with the sliding block 332. The sliding block 332 is controlled to slide in the inner side of the movable groove 311 by the hydraulic cylinder two 36, and the core sleeve 33 is further controlled to move on the surface of the core rod 31.

[0041] The core sleeve 33 is provided with a tapered surface 331 at the annular port close to the side support base 32. The core rod 31 is fixedly provided with a limiting block 312 at the arc surface close to the side support base 32. The core sleeve 33 is provided with an embedded groove 333 at one end, which is embedded with the limiting block 312.

[0042] When the first coiling circle 52 is sleeved on the surface of the core rod 31, the core sleeve 33 is controlled to advance towards the first coiling circle 52 by the hydraulic cylinder two 36. The first coiling circle 52 can be smoothly sleeved on the outer surface of the core sleeve 33 under the limiting action of the limiting block 312 and the guiding action of the tapered surface 331, which facilitates the subsequent movement of the first coiling circle 52 to the stamping area of the lower die one 21 and the upper die one 22 by the core sleeve 33.

[0043] In combination Figures 2-6 , the side support base 32 is provided with a support structure on one side and below the upper die two 24 for supporting the plate material 51. The support structure supports the plate material 51 to be offset above the lower die one 21, so that when the plate material 51 is preliminarily bent by the upper die two 24, one end thereof in contact with the staggered groove 231 is closer to the lower side than the other end.

[0044] The support structure includes a first supporting plate 34 and a second supporting plate 35 elastically rotatably arranged on both sides of the side support base 32. The first supporting plate 34 and the second supporting plate 35 are preferably elastically rotatably arranged on one side of the side support base 32 by torsional spring hinges. The second supporting plate 35 is fixedly provided with a stop block 351 on the upper side. When the first supporting plate 34 and the second supporting plate 35 support the plate material 51, the stop block 351 is used to limit the position of one end of the plate material 51. The side support base 32 is provided with a positioning plate 322 on each side, which is used to limit the first supporting plate 34 and the second supporting plate 35, so that the upper surfaces of the first supporting plate 34 and the second supporting plate 35 remain in a horizontal state.

[0045] Specifically, when the plate 51 is placed on the upper surface of the first supporting plate 34 and the second supporting plate 35, the stopper 351 can limit one end of the plate 51, so that the center of the plate 51 is offset to the side of the axis of the mandrel 31. Then, when the upper die 24 cooperates with the mandrel 31 to bend the plate 51 into a U shape, the end of the U-shaped plate 51 in contact with the staggered groove 231 is closer to the lower side than the other end, which ensures that the one end of the plate 51 is in contact with the staggered groove 231 first, so that the other end can be smoothly staggered with the staggered groove 231.

[0046] It should be noted that if the end of the U-shaped plate 51 not in contact with the staggered groove 231 is pushed through the position of the staggered groove 231 first, the two ends of the plate 51 will be in contact, which will prevent the plate 51 from being shaped into the round one 52.

[0047] Further, the lower side of the movable seat 25 is provided with two top rods 27, and the two top rods 27 correspond to the upper sides of the first supporting plate 34 and the second supporting plate 35, respectively. When the movable seat 25 is lowered, the lower ends of the two top rods 27 will automatically push the corresponding first supporting plate 34 and second supporting plate 35 to rotate downward, so that the two ends of the plate 51 supported by the first supporting plate 34 and the second supporting plate 35 can be smoothly lowered.

[0048] In combination Figures 1-4 The bracket 12 on one side is also provided with a feeding mechanism 40 for continuously feeding the plate 51. The feeding mechanism 40 is arranged on the side close to the first supporting plate 34. The feeding mechanism 40 includes a material supporting plate 41 fixedly assembled on one side of the bracket 12. A friction roller 42 driven by a servo motor is arranged above the material supporting plate 41. The upper surface of the material supporting plate 41 is parallel to the upper surface of the supporting seat 32 at the initial height.

[0049] Specifically, the friction roller 42 is in frictional contact with the plate 51 placed on the surface of the material supporting plate 41. The upper surface of the material supporting plate 41 is smooth. The plate 51 is pushed by the rotating friction roller 42, so that the plate 51 is pushed into the working position between the first supporting plate 34 and the second supporting plate 35 in the manner of material pushing material.

[0050] In order to improve the production efficiency of the round two 53, the stamping of the round one 52 by the lower die one 21 and the upper die one 22, and the stamping of the plate 51 by the lower die two 23 and the upper die two 24 can be performed simultaneously, that is, after the core sleeve 33 sends the round one 52 just stamped on the surface of the mandrel 31 into the middle of the lower die one 21 and the upper die one 22, the plate 51 can be directly fed onto the first supporting plate 34 and the second supporting plate 34. Although there are two steps in the machining process when the core sleeve 33 is formed (the plate 51 is formed into the round one 52, and then the round one 52 is formed into the round two 53), the two steps can be cooperated through the above-mentioned flow to make the forming efficiency of the round two 53 consistent with the existing forming efficiency of one-time stamping.

[0051] It is worth mentioning that, for the above processing flow, when the core sleeve 33 moves to the side support seat 32 direction, the roll circle two 53 originally on the surface of the core sleeve 33 is pushed by the roll circle one 52, so as to automatically exit the surface of the core sleeve 33, which also realizes the effect of automatic discharging (only in the case that the length of the core sleeve 33 is consistent with the width of the plate 51), and further improves the processing efficiency.

[0052] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A coining press device, characterized by, The utility model relates to a plate material bending device, including: Operation platform (10), operation platform (10) including pedestal (11), pedestal (11) top is equipped with hydraulic cylinder one (13) through support (12); Mold mechanism (20), including fixedly assembled on the upper surface of pedestal (11) lower mould one (21), lower mould two (23), lower mould one (21), lower mould two (23) top is provided with upper mould one (22), upper mould two (24) correspondingly, upper mould one (22), upper mould two (24) are assembled in the output end of hydraulic cylinder one (13) through movable seat (25), lower mould one (21) and upper mould one (22) combination, inside form circular groove one, lower mould two (23) and upper mould two (24) combination, inside form circular groove two, circular groove two inner diameter is less than circular groove one, and both are coaxial state, lower mould two (23) inside is provided with staggered slot (231); Mold core mechanism (30) is assembled in the middle part of lower mould one (21), upper mould one (22) and lower mould two (23), upper mould two (24), and mold core mechanism (30) includes the movable core rod (31) of up and down, the surface movable sleeve of core rod (31) is provided with core sleeve (33); Upper mould two (24) stamping plate material (51) with core rod (31), preliminary bending plate material (51), subsequently, the both ends of plate material (51) are stamped by lower mould two (23) again, and staggered slot (231) makes the both ends of plate material (51) staggered overlap, forms round one (52), finally, movable core sleeve (33) sends round one (52) into the stamping interval of lower mould one (21), upper mould one (22), and is formed as round two (53) by stamping; The mold core mechanism (30) further includes a side support seat (32), which is assembled on the upper surface of the pedestal (11) by a plurality of support assemblies (321) disposed on both sides, and the side support seat (32) supported by the support assemblies (321) moves vertically above the pedestal (11), and the core rod (31) is fixedly assembled on one side of the side support seat (32); The surface of the core rod (31) is provided with a movable groove (311) in the horizontal direction, and a sliding block (332) is slidably arranged in the movable groove (311), the sliding block (332) is fixedly connected with the inner wall of the core sleeve (33) sleeved on the surface of the core rod (31), and the side of the side support seat (32) away from the core rod (31) is provided with a hydraulic cylinder two (36), the output end of the hydraulic cylinder two (36) extends into the inner side of the movable groove (311) and is fixedly connected with the sliding block (332); The annular port of the core sleeve (33) close to the side support seat (32) is provided with a conical surface (331).

2. A roll forming device as claimed in claim 1, wherein: The arc surface of one end of the core rod (31) close to the side support seat (32) is fixedly provided with a limiting block (312), and one end of the core sleeve (33) is provided with an embedded groove (333) embedded with the limiting block (312).

3. A roll forming device as defined in claim 1, wherein: The side of the side support seat (32) and below the upper mould two (24) are provided with a support structure for supporting the plate material (51).

4. A roll forming device as defined in claim 3, wherein: The support structure comprises a first supporting plate (34) and a second supporting plate (35) which are respectively elastically rotatably arranged on both sides of the side support base (32), and the upper side of the second supporting plate (35) is fixedly provided with a stop block (351), the stop block (351) is used for limiting the position of one end of the plate material (51) when the first supporting plate (34) and the second supporting plate (35) support the plate material (51), and each side of the side support base (32) is provided with a positioning plate (322), the positioning plate (322) is used for limiting the first supporting plate (34) and the second supporting plate (35), so that the upper surfaces of the elastically rotatably arranged first supporting plate (34) and second supporting plate (35) are kept in a horizontal state.

5. A roll forming device as defined in claim 4, wherein: The support (12) is further provided with a feeding mechanism (40) for continuously feeding the plate material (51) on one side, and the feeding mechanism (40) is arranged on one side close to the first supporting plate (34).

6. A roll forming device as defined in claim 5, wherein: The feeding mechanism (40) comprises a material supporting plate (41) fixedly arranged on one side of the support (12), a friction roller (42) driven to rotate by a servo motor is arranged above the material supporting plate (41), and the upper surface of the material supporting plate (41) is parallel to the upper surface of the side support base (32) at the initial height.

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