A bending device for rectangular frame profiles

Abstract

The application discloses a bending device for rectangular frame section, which is used for bending a strip-shaped section into a rectangular frame section, and comprises a middle clamping assembly clamped in the middle of the strip-shaped section, second and third bending assemblies equidistantly arranged on the two sides of the middle clamping assembly, and first and fourth bending assemblies equidistantly arranged on the outer sides of the strip-shaped section opposite to the second and third bending assemblies, wherein the first, second, third and fourth bending assemblies clamp and bend the strip-shaped section by 90 degrees to form the rectangular frame section.

Description

Technical Field

[0001] This application relates to a profile bending device, and more particularly to a bending device for a rectangular frame profile. Background Technology

[0002] Existing bending devices generally bend profiles to fixed or variable angles. Adding a limiting device to the bending assembly allows for fixed-angle bending. When the position of the limiting device is adjustable, the bending angle can be variable, allowing for multi-angle adjustment. However, current technology is often limited to bending profiles to a specific angle, rather than a specific shape. Utility Model Content

[0003] The purpose of this utility model is to provide a bending device for rectangular frame profiles, which can bend strip profiles into rectangular profiles in one go, that is, the strip is transformed into a rectangle in one go, rather than bending a single position and a single angle on the profile.

[0004] To achieve the above objectives, the present invention provides the following technical solution.

[0005] This application discloses a bending device for a rectangular frame profile, used to bend a strip profile into a rectangular frame profile. The device includes a central clamping assembly clamping the middle portion of the strip profile. A second bending assembly and a third bending assembly are equidistantly arranged on both sides of the central clamping assembly. A first bending assembly and a fourth bending assembly are equidistantly arranged on the outer sides of the strip profile opposite to the second and third bending assemblies. The first, second, third, and fourth bending assemblies respectively clamp and bend the strip profile by 90° to form the rectangular frame profile.

[0006] Preferably, in the above-mentioned bending device for rectangular frame profiles, the first bending assembly, the second bending assembly, the third bending assembly, and the fourth bending assembly each include a clamping mold, a clamping block, a wheel mold, a guide mold, and a sliding plate mold. The wheel mold is disposed between the clamping block and the guide mold, the clamping mold is disposed above the clamping block, and the sliding plate mold is disposed above the guide mold.

[0007] Initially, the bottom of the strip profile is sequentially attached to and supported on the top of the clamping block, the wheel mold, and the guide mold;

[0008] When started, the clamping mold presses down to clamp the strip profile between the clamping cavity formed with the clamping block, and the sliding plate mold descends to fit the top of the strip profile. The strip profile slides between the sliding plate mold and the guide mold in the guide cavity formed between the guide mold and the guide mold.

[0009] During bending, the clamping mold and the clamping block hold the strip profile and bend it downwards by 90°. The strip profile fits against the surface of the wheel mold to form a bending arc. The strip profile is stretched in the guide cavity. The stretched strip profile drives the slide plate mold to slide in the stretching direction.

[0010] Preferably, in the above-mentioned bending device for rectangular frame profiles, the top of the clamping mold is fixedly installed at the output end of the clamping cylinder, the top of the sliding mold has a guide rail, the extension direction of the guide rail is the same as the stretching direction of the strip profile, a slider is slidably installed on the guide rail, and the slider is fixedly installed at the output end of the pressing cylinder.

[0011] Preferably, in the above-mentioned bending device for rectangular frame profiles, the second bending component and the third bending component are symmetrically arranged with respect to the central clamping component, and the first bending component and the fourth bending component are symmetrically arranged with respect to the central clamping component.

[0012] Preferably, in the above-mentioned bending device for rectangular frame profiles, a first mounting plate is rotatably provided at one end of the guide mold of the second bending component around its axis, the clamping block of the second bending component is fixedly installed on the first mounting plate, and the fixed end of the clamping cylinder of the second bending component is installed on the first mounting plate. During bending, the first mounting plate rotates 90° around the axis of the guide mold of the second bending component.

[0013] Preferably, in the above-mentioned bending device for rectangular frame profiles, the guide mold and the wheel mold of the first bending component are simultaneously fixedly installed on the second mounting plate, the fixed end of the pressing cylinder of the first bending component is fixedly installed on the second mounting plate, the second mounting plate is fixedly installed on the first mounting plate, a third mounting plate is rotatably provided at one end of the guide mold of the first bending component around its axis, the clamping block of the first bending component is fixedly installed on the third mounting plate, and the fixed end of the clamping cylinder of the first bending component is installed on the third mounting plate. During bending, the third mounting plate rotates 90° around the axis of the guide mold of the first bending component.

[0014] Preferably, the above-mentioned bending device for rectangular frame profiles includes a frame on which a first arc groove is formed, the first arc groove being centered on the axis of the wheel mold of the second bending assembly, and a first mounting plate being rotatably supported on the first arc groove; a second arc groove is formed on the second mounting plate, the second arc groove being centered on the axis of the wheel mold of the first bending assembly, and a third mounting plate being rotatably supported on the second arc groove.

[0015] Preferably, in the above-mentioned bending device for rectangular frame profiles, one end of the strip profile abuts against the positioning plate, and multiple strip profiles are arranged side by side.

[0016] Preferably, in the above-mentioned bending device for rectangular frame profiles, the spacing between each pair of the first bending component, the second bending component, the middle clamping component, the third bending component, and the fourth bending component is adjustable.

[0017] Preferably, in the above-mentioned bending device for rectangular frame profiles, one end of the guide mold and the sliding plate mold are respectively provided with a first hot and cold air hole, which is connected to the densely distributed air holes in the guide cavity; one end of the wheel mold is provided with a second hot and cold air hole, which is connected to the air holes arranged on the surface of the wheel mold; one end of the clamping block is provided with a single cold air hole, which is connected to the air holes arranged in the clamping cavity; the first hot and cold air hole and the second hot and cold air hole are respectively connected to a hot and cold air source, and the single cold air hole is connected to a cold air source.

[0018] Compared with existing technologies, the advantage of this technical solution is that it enables the profile to change from strip to rectangle in one step, and the bending efficiency is high. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 The diagram shown is a schematic diagram of the bending device for the rectangular frame profile in the embodiment of this utility model at the initial bending stage;

[0021] Figure 2 The diagram shown is a schematic diagram of the bending device for the rectangular frame profile in an embodiment of this utility model when the bending is completed;

[0022] Figure 3 The diagram shown is a schematic diagram from another perspective of the bending device for the rectangular frame profile in an embodiment of this utility model, with the profile removed at the initial bending stage.

[0023] Figure 4 The diagram shown is a schematic representation of the bending device for the rectangular frame profile in an embodiment of this utility model, showing the profile removed after bending is completed.

[0024] Figure 5 As shown Figure 3 Enlarged view of point A in the middle.

[0025] Figure 6 As shown Figure 4 Enlarged view of section B in the middle. Detailed Implementation

[0026] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Combination Figure 1-6 As shown, the bending device 100 for rectangular frame profiles is used to bend strip profiles 200 into rectangular frame profiles 300. It includes a central clamping component 105 clamping the middle of the strip profile 200. A second bending component 102 and a third bending component 103 are equidistantly arranged on both sides of the central clamping component 105. A first bending component 101 and a fourth bending component 104 are equidistantly arranged on the outer sides of the strip profile 200 opposite to the second bending component 102 and the third bending component 103. The first bending component 101, the second bending component 102, the third bending component 103, and the fourth bending component 104 respectively clamp and bend the strip profile 200 by 90° to form the rectangular frame profile 300.

[0028] In this embodiment, four bending components are used to bend the strip profile at its four angles, achieving the bending of the rectangular frame profile in one step, which is efficient and fast.

[0029] Furthermore, the first bending assembly 101, the second bending assembly 102, the third bending assembly 103, and the fourth bending assembly 104 each include a clamping mold 106, a clamping block 107, a wheel mold 108, a guide mold 109, and a sliding plate mold 110. The wheel mold 108 is disposed between the clamping block 107 and the guide mold 109, the clamping mold 106 is disposed above the clamping block 107, and the sliding plate mold 110 is disposed above the guide mold 109.

[0030] Initially, the bottom of the strip profile 200 is sequentially attached to and supported on the top of the clamping block 107, the wheel mold 108, and the guide mold 109;

[0031] When started, the clamping mold 106 presses down to clamp the strip profile 200 between the clamping cavity 111 formed with the clamping block 107, and the sliding mold 110 descends to fit the top of the strip profile 200. The strip profile 200 slides between the sliding mold 110 and the guide mold 109 to form the guide cavity 112.

[0032] During bending, the clamping mold 106 and the clamping block 107 clamp the strip profile 200 and bend it downwards by 90°. The strip profile 200 fits against the surface of the wheel mold 108 to form a bending arc. The strip profile 200 is stretched in the guide cavity 112. The stretched strip profile 200 drives the slide mold 110 to slide in the stretching direction, keeping the shape of the stretched profile consistent with the guide cavity, thus ensuring no deformation.

[0033] In this embodiment, each bending assembly includes a clamping mold 106, a clamping block 107, a wheel mold 108, a guide mold 109, and a sliding plate mold 110. A clamping cavity is formed between the clamping mold 106 and the clamping block 107 to clamp the profile and rotate it to bend the profile. A guide cavity is formed between the guide mold 109 and the sliding plate mold 110 to keep the profile shape at the stretching point unchanged. The guide mold has a rounded corner, so that the profile is shaped into a rounded corner bend.

[0034] Furthermore, the top of the clamping mold 106 is fixedly mounted to the output end of the clamping cylinder 113, and the top of the sliding mold 110 has a guide rail 114. The extension direction of the guide rail 114 is the same as the stretching direction of the strip profile 200. A slider 115 is slidably mounted on the guide rail 114, and the slider 115 is fixedly mounted to the output end of the pressing cylinder 116. During bending, the stretching of the profile will cause the sliding mold to slide, which also better plasticizes the profile. A restoring spring is provided between the slider and the sliding mold, which will return the sliding mold to its original position when the bending is finished.

[0035] In this embodiment, initially, the clamping mold 106 and the sliding mold 110 are located above the profile. During bending, they move down synchronously and are driven by two cylinders respectively. Since the sliding mold needs to move, a slide rail is provided on the top of the sliding mold. Moving along the slide rail prevents the sliding mold from remaining stationary, which would cause the profile to break due to poor stretching and deformation.

[0036] Furthermore, the second bending assembly 102 and the third bending assembly 103 are symmetrically arranged with respect to the middle clamping assembly 105, and the first bending assembly 101 and the fourth bending assembly 104 are symmetrically arranged with respect to the middle clamping assembly 105.

[0037] In this embodiment, the two sides are symmetrically arranged so that the final bending forms the required rectangular frame profile.

[0038] Furthermore, a first mounting plate 117 is rotatably mounted on one end of the guide mold 109 of the second bending assembly 102 around its axis. The clamping block 107 of the second bending assembly 102 is fixedly mounted on the first mounting plate 117. The fixed end of the clamping cylinder 113 of the second bending assembly 102 is mounted on the first mounting plate 117. During bending, the first mounting plate 117 rotates 90° around the axis of the guide mold 109 of the second bending assembly 102.

[0039] In this embodiment, the first mounting plate rotates around the axis of the guide mold, thereby driving the rotation of the clamping block and the clamping cylinder to achieve a 90° bend.

[0040] Furthermore, the guide mold 109 and wheel mold 108 of the first bending assembly 101 are simultaneously fixedly installed on the second mounting plate 118, the fixed end of the pressing cylinder 116 of the first bending assembly 101 is fixedly installed on the second mounting plate 118, the second mounting plate 118 is fixedly installed on the first mounting plate 117, one end of the guide mold 109 of the first bending assembly 101 is rotatably provided with a third mounting plate 119 around its axis, the clamping block 107 of the first bending assembly 101 is fixedly installed on the third mounting plate 119, and the fixed end of the clamping cylinder 113 of the first bending assembly 101 is installed on the third mounting plate 119. During bending, the third mounting plate 119 rotates 90° around the axis of the guide mold 109 of the first bending assembly 101.

[0041] In this embodiment, since the second and third bending components bend the profile to a vertical state when bending, the first and second bending components need to rotate synchronously to the corresponding positions and realize their own bending synchronously. Therefore, by installing the second and third mounting plates, the first mounting plate is first installed on the first mounting plate, and the first mounting plate rotates to reach the corresponding position. Then, the third mounting plate rotates around the guide mold of the first bending component 101 to realize its own bending function.

[0042] Furthermore, the assembly includes a frame 120, on which a first arc groove 121 is formed, the first arc groove 121 being centered on the axis of the wheel mold 108 of the second bending assembly 102, and a first mounting plate 117 being rotatably supported on the first arc groove 121; a second arc groove 122 is formed on a second mounting plate 118, the second arc groove 122 being centered on the axis of the wheel mold 108 of the first bending assembly 101, and a third mounting plate 119 being rotatably supported on the second arc groove 122.

[0043] In this embodiment, two arc grooves are used to support the rotation of the first mounting plate and the third mounting plate, ensuring precise rotation.

[0044] Furthermore, one end of the strip profile 200 abuts against the positioning plate 123, and multiple strip profiles 200 are arranged side by side.

[0045] In this embodiment, the positioning plate accurately positions the bending position to prevent inaccurate bending. At the same time, since multiple profiles are arranged side by side, only the corresponding cavity holes need to be opened in each mold, which greatly improves the bending efficiency and allows multiple bends to be achieved at once.

[0046] Furthermore, the spacing between each pair of the first bending assembly 101, the second bending assembly 102, the middle clamping assembly 105, the third bending assembly 103, and the fourth bending assembly 104 is adjustable.

[0047] In this embodiment, bending of irregularly shaped rectangular frames can be achieved.

[0048] Furthermore, one end of the guide mold 109 and the slide plate mold 110 is respectively provided with a first hot and cold air hole 124, which is connected to the densely distributed air holes in the guide cavity 112 (not shown in the figure). One end of the wheel mold 108 is provided with a second hot and cold air hole 125, which is connected to the air holes arranged on the surface of the wheel mold 108 (not shown in the figure). One end of the clamping block 107 is provided with a single cold air hole 126, which is connected to the air holes arranged in the clamping cavity 111 (not shown in the figure). The first hot and cold air hole 124 and the second hot and cold air hole 125 are respectively connected to the hot and cold air source, and the single cold air hole 126 is connected to the cold air source.

[0049] In this embodiment, under normal conditions, slightly flexible profiles such as aluminum profiles can be bent. However, when bending plastic profiles, such as luggage seals, direct bending cannot achieve the desired shape. Therefore, hot air must first be introduced to heat the profile, then cold air is introduced after bending to set the shape, ultimately achieving a rectangular bend in the plastic profile. Since the clamping cavity needs to hold the profile, it does not require heating. However, hot air released from other molds will diffuse into the clamping cavity, so cold air is needed for cooling; hence, a single cold air vent is provided. The profiles in the wheel mold and guide cavity both require deformation and setting, thus requiring hot and cold air respectively for heating and cooling.

[0050] In summary, this technical solution can not only bend ordinary shaped profiles, such as aluminum profiles, into rectangular frames, but also plastic profiles into rectangular frames. Moreover, this technical solution is highly efficient and reliable.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A bending device for rectangular frame profiles, used to bend strip profiles into rectangular frame profiles, characterized in that, The device includes a central clamping assembly that clamps the middle part of the strip profile. A second bending assembly and a third bending assembly are respectively provided at equal intervals on both sides of the central clamping assembly. A first bending assembly and a fourth bending assembly are respectively provided at equal intervals on the outer sides of the second bending assembly and the third bending assembly, opposite to each other. The first bending assembly, the second bending assembly, the third bending assembly, and the fourth bending assembly respectively clamp and bend the strip profile by 90° to form the rectangular frame profile.

2. The bending device for rectangular frame profiles according to claim 1, characterized in that, The first bending assembly, the second bending assembly, the third bending assembly, and the fourth bending assembly each include a clamping mold, a clamping block, a wheel mold, a guide mold, and a sliding plate mold. The wheel mold is disposed between the clamping block and the guide mold. The clamping mold is disposed above the clamping block, and the sliding plate mold is disposed above the guide mold. Initially, the bottom of the strip profile is sequentially attached to and supported on the top of the clamping block, the wheel mold, and the guide mold; When started, the clamping mold presses down to clamp the strip profile between the clamping cavity formed with the clamping block, and the sliding plate mold descends to fit the top of the strip profile. The strip profile slides between the sliding plate mold and the guide mold in the guide cavity formed between the guide mold and the guide mold. During bending, the clamping mold and the clamping block hold the strip profile and bend it downwards by 90°. The strip profile fits against the surface of the wheel mold to form a bending arc. The strip profile is stretched in the guide cavity. The stretched strip profile drives the slide plate mold to slide in the stretching direction.

3. The bending device for rectangular frame profiles according to claim 2, characterized in that, The top of the clamping mold is fixedly installed on the output end of the clamping cylinder. The top of the sliding mold has a guide rail. The extension direction of the guide rail is the same as the stretching direction of the strip profile. A slider is slidably installed on the guide rail. The slider is fixedly installed on the output end of the pressing cylinder.

4. The bending device for rectangular frame profiles according to claim 3, characterized in that, The second bending component and the third bending component are symmetrically arranged with respect to the central clamping component, and the first bending component and the fourth bending component are symmetrically arranged with respect to the central clamping component.

5. The bending device for the rectangular frame profile according to claim 4, characterized in that, One end of the guide mold of the second bending assembly is rotatably mounted with a first mounting plate around its axis. The clamping block of the second bending assembly is fixedly mounted on the first mounting plate. The fixed end of the clamping cylinder of the second bending assembly is mounted on the first mounting plate. During bending, the first mounting plate rotates 90° around the axis of the guide mold of the second bending assembly.

6. The bending device for rectangular frame profiles according to claim 5, characterized in that, The guide mold and the wheel mold of the first bending assembly are simultaneously fixedly installed on the second mounting plate. The fixed end of the pressing cylinder of the first bending assembly is fixedly installed on the second mounting plate. The second mounting plate is fixedly installed on the first mounting plate. A third mounting plate is rotatably provided at one end of the guide mold of the first bending assembly around its axis. The clamping block of the first bending assembly is fixedly installed on the third mounting plate. The fixed end of the clamping cylinder of the first bending assembly is installed on the third mounting plate. During bending, the third mounting plate rotates 90° around the axis of the guide mold of the first bending assembly.

7. The bending device for a rectangular frame profile according to claim 6, characterized in that, The assembly includes a frame on which a first arc groove is formed, the first arc groove being centered on the axis of the wheel mold of the second bending assembly, and a first mounting plate being rotatably supported on the first arc groove; a second arc groove is formed on the second mounting plate, the second arc groove being centered on the axis of the wheel mold of the first bending assembly, and a third mounting plate being rotatably supported on the second arc groove.

8. The bending device for rectangular frame profiles according to claim 1, characterized in that, One end of the strip profile abuts against the positioning plate, and multiple strip profiles are arranged side by side.

9. The bending device for rectangular frame profiles according to claim 1, characterized in that, The spacing between each pair of the first bending component, the second bending component, the middle clamping component, the third bending component, and the fourth bending component is adjustable.

10. The bending device for rectangular frame profiles according to claim 2, characterized in that, The guide mold and the slide plate mold are respectively provided with a first hot and cold air hole at one end, and the first hot and cold air hole is connected to the densely distributed air holes in the guide cavity. The wheel mold is provided with a second hot and cold air hole at one end, and the second hot and cold air hole is connected to the air holes arranged on the surface of the wheel mold. The clamping block is provided with a single cold air hole at one end, and the single cold air hole is connected to the air holes arranged in the clamping cavity. The first hot and cold air hole and the second hot and cold air hole are respectively connected to a hot and cold air source, and the single cold air hole is connected to a cold air source.

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