Bending mechanism and stamping device

Abstract

The utility model provides a bending mechanism and a stamping device, and relates to the technical field of rectangular pipe machining. The bending mechanism is used for bending the ends of the rectangular pipes and comprises an upper die assembly and a lower die assembly, and the upper die assembly comprises a pressing tool; the lower die assembly comprises a pressure-bearing piece, the pressure-bearing piece is arranged below the pressing tool, and a bending groove is formed in the position, corresponding to the pressing tool, of the upper end face of the pressure-bearing piece. One end of the rectangular pipe abuts against the pressure bearing piece so that the end can be located at the open end of the bending groove, and the pressing tool can press the end in the direction close to the bending groove so that the end can be bent. According to the bending mechanism and the stamping device, the requirement for bending the ends of the rectangular pipes can be met, and the bending efficiency and the bending effect are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rectangular tube processing, in particular to a bending mechanism and a punching device. Background Art

[0002] The ends of rectangular tubes need to be bent when they are used. In the existing technology, most of the methods are manually bent. This bending method is time-consuming and labor-intensive, and due to differences in manual operation, the bending effect cannot be guaranteed. Another part uses a bending mechanism. Although it can ensure bending efficiency and bending effect, it can only bend the rectangular tube from the middle of the rectangular tube, which cannot meet the processing requirements for bending the ends of the rectangular tube. Utility Model Content

[0003] The purpose of the utility model is to provide a bending mechanism and a punching device, which can meet the demand for bending the end of a rectangular tube and ensure the bending efficiency and bending effect.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] The bending mechanism is used to bend the end of the rectangular tube, including:

[0006] an upper die assembly, including a hold-down tool;

[0007] The lower mold assembly includes a pressure-bearing member, which is arranged below the pressing tool, and the upper end surface of the pressure-bearing member is provided with a bending groove corresponding to the pressing tool;

[0008] The first end of the rectangular tube abuts against the pressure-bearing member so that the end head is located at the open end of the bending groove, and the pressing tool can press in a direction close to the bending groove so that the end head is bent.

[0009] As a further technical solution, the pressing tool is configured to be in the shape of a long strip, and the length of the pressing tool is greater than the depth of the bending groove.

[0010] As a further technical solution, the first side wall of the pressing tool and the first inner wall of the bending groove are arranged parallel to each other and are both perpendicular to the horizontal plane.

[0011] As a further technical solution, one side of the pressure-bearing member corresponding to the first inner wall extends in a direction away from the first inner wall to form an auxiliary abutment portion, and the first end of the rectangular tube can be sleeved on the auxiliary abutment portion.

[0012] As a further technical solution, the upper end surface of the auxiliary abutting portion is arranged parallel to the horizontal plane and is arranged flush with the upper end surface of the pressure-bearing member.

[0013] As a further technical solution, a transition curved surface is provided between the upper end surface of the auxiliary abutting portion and the first inner wall.

[0014] As a further technical solution, the bending mechanism also includes at least one set of guide components, the upper mold assembly also includes a mounting plate, the lower mold assembly also includes a support plate, the press is fixedly connected to the lower end surface of the mounting plate, the pressure-bearing member is fixedly connected to the upper end surface of the support plate, and the guide assembly is arranged between the support plate and the mounting plate.

[0015] As a further technical solution, the guide assembly includes a guide cylinder and a guide shaft. The first end of the guide cylinder is fixedly connected to the lower end surface of the mounting plate, and the second end extends toward the support plate. The first end of the guide shaft is fixedly connected to the upper end surface of the support plate, and the second end is movably inserted into the second end of the guide cylinder.

[0016] As a further technical solution, the guide assembly includes a guide shaft and a guide through hole, the guide through hole is arranged on the mounting plate, the first end of the guide shaft is fixedly connected to the upper end surface of the support plate, and the second end is inserted into the guide through hole.

[0017] The punching device includes a punching mechanism and a bending mechanism. The bending mechanism is arranged on the punching mechanism, and at least one of the upper mold assembly and the lower mold assembly in the bending mechanism is transmission-connected to the punching mechanism.

[0018] Compared with the existing technology, the bending mechanism and punching device provided by the present invention have the following technical advantages:

[0019] 1. Since the pressure-bearing part is provided with a bending groove, and the pressing tool can press in the direction close to the bending groove, when the end of the rectangular tube needs to be bent, the end of the rectangular tube to be bent is first placed against one side of the pressure-bearing part so that the corresponding end is located at the open end of the bending groove. Then, the pressing tool is pressed in the direction close to the bending groove. As the pressing tool is pressed, the end located at the open end of the bending groove is bent in the direction close to the bottom wall of the bending groove until the pressing tool abuts against the bottom wall of the bending groove, thereby completing the bending of the end to be bent on the rectangular tube. Then, the pressing tool is withdrawn from the bending groove, and the bent rectangular tube can be removed from the bending mechanism. During the entire process, the pressing tool and the pressure-bearing part cooperate with each other to avoid manual operation differences during the bending process, thereby ensuring the bending effect.

[0020] 2. Since at least one of the upper mold assembly and the lower mold assembly is connected to the stamping mechanism, the stamping mechanism provides bending power for the bending mechanism, which ensures the bending effect while saving manpower and improving the bending efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 This is a front view of the bending mechanism provided by the embodiment of the present utility model in a working state;

[0023] Figure 2 It is a structural schematic diagram of the bending mechanism provided by an embodiment of the utility model;

[0024] Figure 3 This is a partial structural front view of the bending mechanism provided by an embodiment of the utility model;

[0025] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0026] In the picture:

[0027] 10. Rectangular tube; 11. End;

[0028] 100, upper mold assembly; 110, press; 111, first side wall; 120, mounting plate;

[0029] 200, lower mold assembly; 210, pressure-bearing member; 220, bending groove; 221, first inner wall; 230, auxiliary abutment portion; 231, transition curved surface; 240, support plate;

[0030] 300, guide assembly; 310, guide cylinder; 320, guide shaft; 330, guide through hole. DETAILED DESCRIPTION

[0031] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the foregoing drawings.

[0032] In this application, the terms "comprises," "includes," "has," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0033] In this application, the term "and / or" describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this application generally indicates that the related objects are in an "and / or" relationship.

[0034] In this application, the terms "connect," "combine," "couple," and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without an intermediary, and an indirect connection refers to two parts or components being connected to at least one intermediary, with the two parts or components being connected via the intermediary. Furthermore, "connect" and "couple" are not limited to physical or mechanical connections or couplings and may include electrical connections or couplings.

[0035] In this application, it will be understood by those skilled in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. associated with a specific value. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0036] In this application, it will be understood by those skilled in the art that the function performed by an assembly can be performed by one assembly, multiple assemblies, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one assembly, or a combination of multiple parts.

[0037] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to the other element "upper" or "lower", but also be indirectly connected to the other element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, below can include directly below, lower left, lower right, lower front and lower back, etc.

[0038] Combine Figures 1 to 4 As shown, the bending mechanism and stamping device provided in this embodiment can meet the requirements for bending the end 11 of the rectangular tube 10, and ensure the bending efficiency and bending effect. Specifically, the bending mechanism includes an upper mold assembly 100 and a lower mold assembly 200: the upper mold assembly 100 includes a press 110; the lower mold assembly 200 includes a pressure member 210, the pressure member 210 is arranged below the press 110, and the upper end surface of the pressure member 210 is provided with a bending groove 220 corresponding to the press 110; one end of the rectangular tube 10 abuts against the pressure member 210, so that the end 11 is located at the open end of the bending groove 220, and the press 110 can press in the direction close to the bending groove 220 to bend the end 11.

[0039] Since the pressure-bearing member 210 is provided with a bending groove 220 and the pressing tool 110 can be pressed in a direction close to the bending groove 220, when the end 11 of the rectangular tube 10 needs to be bent, the end of the rectangular tube 10 to be bent is first placed against one side of the pressure-bearing member 210 so that the corresponding end 11 is located at the open end of the bending groove 220. Then, the pressing tool 110 is pressed in a direction close to the bending groove 220. As the pressing tool 110 is pressed, the end 11 located at the open end of the bending groove 220 is bent in a direction close to the bottom wall of the bending groove 220 until the pressing tool 110 abuts against the bottom wall of the bending groove 220, thereby completing the bending of the end 11 to be bent on the rectangular tube 10. Then, the pressing tool 110 is withdrawn from the bending groove 220, and the bent rectangular tube 10 can be removed from the bending mechanism. During the entire process, the pressing tool 110 cooperates with the pressure-bearing member 210 to avoid manual operation differences during the bending process, thereby ensuring the bending effect.

[0040] Preferably, the pressing tool 110 is configured as an elongated strip, and the length of the pressing tool 110 is greater than the depth of the bending groove 220. In this configuration, when the pressing tool 110 is pressed toward the bending groove 220, it is ensured that the pressing tool 110 can abut against the bottom wall of the bending groove 220, thereby ensuring the bending effect of the end piece 11 to be bent.

[0041] Furthermore, the first side wall 111 of the pressing tool 110 and the first inner wall 221 of the bending groove 220 are arranged parallel to each other and are both perpendicular to the horizontal plane.

[0042] In this embodiment, the cross-sectional shape of the press 110 in the height direction is set to be a rectangle, and the first side wall 111 and the first inner wall 221 are set parallel to each other. When the press 110 is located in the bending groove 220, the distance between the first side wall 111 and the first inner wall 221 is equal to the thickness of the end head 11 to be bent. In this way, after the end head 11 to be bent is bent, the bent end head 11 is prevented from tilting toward the inside of the rectangular tube 10 or tilting away from the rectangular tube 10, thereby further ensuring the bending effect of the end head 11 to be bent.

[0043] Preferably, one side of the pressure-bearing member 210 corresponding to the first inner wall 221 extends in a direction away from the first inner wall 221 to form an auxiliary abutment portion 230 , and one end of the rectangular tube 10 can be sleeved on the auxiliary abutment portion 230 .

[0044] With this arrangement, when the end 11 of the rectangular tube 10 needs to be bent, the corresponding end of the rectangular tube 10 is inserted into the auxiliary abutment portion 230. In the process of the pressing tool 110 pressing in the direction close to the bending groove 220, the probability of deformation of the corresponding end of the rectangular tube 10 can be reduced.

[0045] Furthermore, the upper end surface of the auxiliary abutting portion 230 is arranged parallel to the horizontal plane and is flush with the upper end surface of the pressure-bearing member 210 .

[0046] In this embodiment, the cross-sectional shape of the auxiliary abutment portion 230 is set to correspond to the cross-sectional shape of the inner side of the rectangular tube 10. In this way, when the corresponding end of the rectangular tube 10 is inserted into the auxiliary abutment portion 230, the inner side of the top wall of the rectangular tube 10 abuts against the upper end surface of the abutment portion. During the bending process of the end head 11, the corresponding end of the rectangular tube 10 can be further prevented from being deformed.

[0047] In some other embodiments, a flexible part can be provided on the outer wall of the auxiliary abutment portion 230, which can prevent the rectangular tube 10 from deforming during the bending process. At the same time, by pressing the flexible part, rectangular tubes 10 of different specifications can be inserted into the auxiliary abutment portion 230, thereby improving the applicability of the bending mechanism.

[0048] Furthermore, a transition curved surface 231 is provided between the upper end surface of the auxiliary abutment portion 230 and the first inner wall 221. The transition curved surface 231 convexly extends away from the bottom wall of the bending groove 220 and smoothly transitions to both the upper end surface of the auxiliary abutment portion 230 and the first inner wall 221. During the bending process of the end piece 11 to be bent, the transition curved surface 231 acts as a buffer for the end piece 11, preventing fractures between the end piece 11 and the rectangular tube 10 caused by the vertical bending of the end piece 11, thereby further ensuring the bending effect.

[0049] Preferably, the bending mechanism further includes at least one set of guide assemblies 300, the upper mold assembly 100 further includes a mounting plate 120, the lower mold assembly 200 further includes a support plate 240, the press 110 is fixedly connected to the lower end surface of the mounting plate 120, the pressure member 210 is fixedly connected to the upper end surface of the support plate 240, and the guide assemblies 300 are disposed between the support plate 240 and the mounting plate 120. The guide assemblies 300 guide the press 110 to always press against the pressure member 210 along a predetermined path in the height direction. The number of guide assemblies 300 can be set according to actual needs. In this embodiment, two sets of guide assemblies 300 are provided, and the two sets of guide assemblies 300 are staggered and disposed between the support plate 240 and the mounting plate 120. This prevents relative horizontal displacement between the press 110 and the pressure member 210 during the bending process, thereby further improving the bending effect.

[0050] Specifically, the guide assembly 300 includes a guide cylinder 310 and a guide shaft 320. The first end of the guide cylinder 310 is fixedly connected to the lower end surface of the mounting plate 120, and the second end extends toward the support plate 240. The first end of the guide shaft 320 is fixedly connected to the upper end surface of the support plate 240 corresponding to the guide cylinder 310, and the second end is movably inserted into the second end of the guide cylinder 310. The insertion of the guide shaft 320 into the guide cylinder 310 ensures that the press 110 always presses against the pressure member 210 along a predetermined path in the height direction, thereby ensuring the bending effect. At the same time, when the press 110 abuts the bottom wall of the bending groove 220, the second end of the guide shaft 320 passes through the guide cylinder 310 and abuts the lower end surface of the mounting plate 120. This prevents the press 110 from being overly pressed against the pressure member 210, thereby preventing the press 110 from damaging the rectangular tube 10.

[0051] Alternatively, the guide assembly 300 includes a guide shaft 320 and a guide through-hole 330, wherein the guide through-hole 330 is provided on the mounting plate 120, wherein the first end of the guide shaft 320 is fixedly connected to the upper end surface of the support plate 240 corresponding to the guide through-hole 330, and the second end is directly inserted into the guide through-hole 330. By directly cooperating with the guide through-hole 330, the press 110 is ensured to always press against the pressure-bearing member 210 along a predetermined route in the height direction, thereby ensuring the bending effect on the end head 11. In other embodiments, the guide through-hole 330 and the guide cylinder 310 can be provided on the mounting plate 120 at the same time, and the guide cylinder 310 is provided corresponding to the guide through-hole 330.

[0052] The stamping device includes a stamping mechanism (not shown in the figure) and a bending mechanism. The bending mechanism is arranged on the stamping mechanism, and at least one of the upper mold assembly 100 and the lower mold assembly 200 in the bending mechanism is transmission-connected to the stamping mechanism.

[0053] Since at least one of the upper mold assembly 100 and the lower mold assembly 200 is connected to the stamping mechanism, that is, the stamping mechanism provides bending power for the bending mechanism, while ensuring the bending effect, it can save manpower and improve bending efficiency. The stamping mechanism is set with reference to the existing technology and will not be described here in detail.

[0054] In some other embodiments, the upper mold assembly 100 or the lower mold assembly 200 can be connected to the output shaft of the drive motor with the help of a drive motor, so that the upper mold assembly 100 is pressed against the lower mold assembly 200 to complete the bending of the end 11 to be bent.

[0055] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A bending mechanism for bending the end (11) of a rectangular tube (10), characterized in that: include: An upper mold assembly (100) including a press (110); The lower mold assembly (200) includes a pressure-bearing member (210), the pressure-bearing member (210) is arranged below the pressing tool (110), and a bending groove (220) is provided on the upper end surface of the pressure-bearing member (210) corresponding to the pressing tool (110); One end of the rectangular tube (10) abuts against the pressure-bearing member (210) so that the end head (11) is located at the open end of the bending groove (220), and the pressing tool (110) can press in a direction close to the bending groove (220) so that the end head (11) is bent.

2. The bending mechanism according to claim 1, characterized in that: The pressing tool (110) is configured in a long strip shape, and the length of the pressing tool (110) is greater than the depth of the bending groove (220).

3. The bending mechanism according to claim 1, characterized in that: The first side wall (111) of the pressing tool (110) and the first inner wall (221) of the bending groove (220) are arranged parallel to each other and are both perpendicular to the horizontal plane.

4. The bending mechanism according to claim 3, characterized in that: A side of the pressure-bearing member (210) corresponding to the first inner wall (221) extends in a direction away from the first inner wall (221) to form an auxiliary abutment portion (230), and one end of the rectangular tube (10) can be sleeved on the auxiliary abutment portion (230).

5. The bending mechanism according to claim 4, characterized in that: The upper end surface of the auxiliary abutment portion (230) is arranged parallel to the horizontal plane and is flush with the upper end surface of the pressure-bearing member (210).

6. The bending mechanism according to claim 5, characterized in that: A transition curved surface (231) is provided between the upper end surface of the auxiliary abutting portion (230) and the first inner wall (221).

7. The bending mechanism according to claim 1, characterized in that: The bending mechanism further includes at least one set of guide assemblies (300), the upper mold assembly (100) further includes a mounting plate (120), the lower mold assembly (200) further includes a support plate (240), the pressing tool (110) is fixedly connected to the lower end surface of the mounting plate (120), the pressure-bearing member (210) is fixedly connected to the upper end surface of the support plate (240), and the guide assembly (300) is arranged between the support plate (240) and the mounting plate (120).

8. The bending mechanism according to claim 7, characterized in that: The guide assembly (300) includes a guide cylinder (310) and a guide shaft (320), wherein the first end of the guide cylinder (310) is fixedly connected to the lower end surface of the mounting plate (120), and the second end extends toward the support plate (240); the first end of the guide shaft (320) is fixedly connected to the upper end surface of the support plate (240), and the second end is movably inserted into the second end of the guide cylinder (310).

9. The bending mechanism according to claim 7, characterized in that: The guide assembly (300) includes a guide shaft (320) and a guide through hole (330), wherein the guide through hole (330) is provided on the mounting plate (120), a first end of the guide shaft (320) is fixedly connected to the upper end surface of the support plate (240), and a second end is inserted into the guide through hole (330).

10. Punching device, characterized in that, It comprises a stamping mechanism and a bending mechanism according to any one of claims 1 to 9, wherein the bending mechanism is arranged on the stamping mechanism, and at least one of an upper mold assembly (100) and a lower mold assembly (200) in the bending mechanism is transmission-connected to the stamping mechanism.

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