Groove bending machine for production of combined valve base

Abstract

This invention discloses a channel steel bending machine for producing combined valve bases, comprising: a frame; a support plate, horizontally positioned at the top of the frame for supporting a first segment, the upper side of which has a first positioning groove distributed along a first horizontal direction for positioning the first segment, and a positioning post adjustable along a second horizontal direction on one side of the first positioning groove for inserting into a connecting hole, the second horizontal direction being perpendicular to the first horizontal direction; and a bending device, comprising an abutment portion rotatably positioned on one side of the support plate along the first horizontal direction and a driving portion for driving the abutment portion to rotate, the rotation axis of the abutment portion being distributed along the second horizontal direction, and a second positioning groove on one side of the abutment portion for positioning a second segment, the abutment portion for abutting and pushing the second segment to bend upwards by 90 degrees relative to the first segment during rotation. This invention has the advantage of high bending quality.

Description

Technical Field

[0001] This invention relates to the field of subway combination valve base production technology, and in particular to a channel steel bending machine for producing combination valve bases. Background Technology

[0002] The base of the subway combination valve is a key component to ensure the quality of the valve. The rigidity, stability, dimensional accuracy, and shape error of the component will affect the flexibility and consistency of the valve during the opening process. Therefore, it is crucial to combine the manufacturing of the component with the valve to achieve the performance requirements and quality of the combination valve. At the same time, making the manufacturing of the base simpler, the production efficiency higher, the operation more convenient for workers, and the cost lower are also core contents of production pursuit. The combination valve base has a rectangular frame structure. Usually, the base is welded together from four frame sides (channel steel). However, to reduce the deformation during welding and eliminate shape errors, it is optimized to consist of two frame sides. The production process is as follows: First, steel plate coils are extruded into special channel steel that meets the size requirements of the base. During this process, the connecting holes that need to be connected with the valve are punched at the same time. Then, the formed channel steel is punched at right angles and simultaneously stretched and bent into grooves. Two sections of channel steel are then cut out to make the two frame sides of the base. Each section of channel steel includes a first segment and a second segment located at both ends of the first segment. There is a bending groove between the first segment and the second segment. Then, the two second segments at both ends of the channel steel are bent at 90 degrees to process the frame sides. Finally, the two frame sides are welded together to form a rectangular base structure. In the above production process, bending equipment is required when bending the channel steel. However, the existing bending equipment is prone to deformation and misalignment of the channel steel during bending, resulting in low bending quality. Therefore, there is an urgent need for a channel steel bending machine for the production of combined valve bases with high bending quality. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a channel steel bending machine for the production of combined valve bases, which achieves high bending quality.

[0004] According to an embodiment of the present invention, a channel steel bending machine for producing a combined valve base is used to bend a channel steel including a first segment and a second segment. The first segment has a plurality of connecting holes on its side wall in the width direction. The channel steel bending machine for producing a combined valve base includes:

[0005] frame;

[0006] A support plate is horizontally disposed on the top of the frame to support the first segment. The upper side of the support plate is provided with a first positioning groove distributed along a first horizontal direction. The first positioning groove is used for the first segment to be embedded and positioned. A positioning post that can be adjusted along a second horizontal direction is provided on one side of the first positioning groove. The positioning post is used to be inserted into the connecting hole. The second horizontal direction is perpendicular to the first horizontal direction.

[0007] The bending device includes an abutment portion rotatably disposed on one side of the support plate along the first horizontal direction and a driving portion for driving the abutment portion to rotate. The rotation axis of the abutment portion is distributed along the second horizontal direction. A second positioning groove is provided on one side of the abutment portion for embedding and positioning the second segment. The abutment portion is used to abut against and push the second segment to bend upward at 90 degrees relative to the first segment during rotation.

[0008] The channel steel bending machine for producing combined valve bases according to embodiments of the present invention has at least the following beneficial effects:

[0009] The combined valve base production channel steel bending machine with the above-mentioned structure can support the first segment with a support plate and position the first segment with a first positioning groove and a positioning column, thereby fixing the position of the first segment and preventing it from moving randomly during bending. Furthermore, by setting a second positioning groove on one side of the abutment part for the second segment to be inserted, when the abutment part is rotated to push the second segment to bend at 90 degrees, the second positioning groove can position the second segment along the second horizontal direction, preventing the second segment from being misaligned and deformed relative to the first segment, resulting in high bending quality.

[0010] According to some embodiments of the present invention, the abutting part is configured as a push plate, which has a horizontal state during rotation such that the upper surface of the push plate is flush with the upper surface of the support plate.

[0011] According to some embodiments of the present invention, the upper side of the support plate is provided with a first positioning plate and a first clamping plate that are parallel to each other, the first positioning groove is formed between the first positioning plate and the first clamping plate, the first positioning plate is fixed to the support plate, the first clamping plate is adjustablely disposed on the upper side of the support plate along the second horizontal direction, and the positioning post is disposed on the first clamping plate and can move synchronously with the first clamping plate.

[0012] According to some embodiments of the present invention, the support plate is provided with a first mounting seat, the first clamping plate is fixedly provided with two first guide rods, the first guide rods are distributed along the second horizontal direction and slide through the first mounting seat, and a first compression spring is sleeved on the first guide rod for applying an elastic force toward the first positioning plate to the first clamping plate.

[0013] According to some embodiments of the present invention, a first linkage plate is connected between the two first guide rods. The first linkage plate is located on the side of the first mounting base away from the first clamping plate. A first pull rod distributed along the second horizontal direction is fixed on the first linkage plate. When the first pull rod moves away from the first mounting base along the second horizontal direction, it can drive the two first guide rods to move synchronously.

[0014] According to some embodiments of the present invention, a first pull plate is rotatably provided on the first pull rod, the rotation axis of the first pull plate is collinear with the center line of the first pull rod, the support plate is provided with a vertically penetrating first stop groove, the first stop groove is distributed along the first horizontal direction, wherein the first pull plate can move synchronously with the first pull rod to be vertically aligned with the first stop groove and rotate to be partially embedded in the first stop groove, when the first pull plate is partially embedded in the first stop groove, the distance between the positioning post and the first positioning plate is greater than the width dimension of the first segment.

[0015] According to some embodiments of the present invention, the positioning post is vertically adjustable on the first clamping plate; a second positioning plate and a second clamping plate are provided on one side of the abutting portion, which are parallel to each other, and a second positioning groove is formed between the second positioning plate and the second clamping plate. The second positioning plate is fixedly disposed on the abutting portion, and the second clamping plate is adjustablely disposed on the abutting portion along the second horizontal direction.

[0016] According to some embodiments of the present invention, the first clamping plate is provided with an adjustment groove that runs through its thickness direction and is vertically distributed. The positioning post includes an insertion section and an installation section that are sequentially distributed along its axial direction. A stepped surface is formed between the insertion section and the installation section. The stepped surface abuts against the first clamping plate. The installation section passes through the adjustment groove and is threadedly connected to a locking nut.

[0017] According to some embodiments of the present invention, the adjusting grooves are provided at intervals along the first horizontal direction.

[0018] According to some embodiments of the present invention, the support plate is provided with a first mounting seat, and the first clamping plate is adjustablely disposed on the first mounting seat along the second horizontal direction. The support plate is provided with slide rails distributed along the first horizontal direction, the first mounting seat is slidably disposed on the slide rails, and set screws are threaded through the slide rails for locking the first mounting seat to the slide rails. A plurality of set screws are spaced apart along the first horizontal direction.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of clamping channel steel according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the channel steel after bending according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the state when the first pull plate portion is embedded in the first stop groove according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the installation structure of the support plate and the first clamping plate according to an embodiment of the present invention;

[0026] Figure 6 This is an exploded view of the installation structure of the first clamping plate and the first mounting base according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the installation structure of the abutment part and the second clamping plate according to an embodiment of the present invention.

[0028] Icon labels:

[0029] Channel steel 100, first section 101, second section 102, connecting hole 103, bending groove 104;

[0030] 200 racks;

[0031] Support plate 300, first positioning groove 301, first stop groove 302, first positioning plate 310, first clamping plate 320, first guide rod 321, adjusting groove 322, first limit nut 323, first mounting base 330, first compression spring 340, first linkage plate 350, first pull rod 351, first mounting nut 352, first pull plate 360, slide rail 370, set screw 380;

[0032] Positioning pin 400, insertion section 410, mounting section 420, locking nut 430;

[0033] Bending device 500, abutment part 510, second positioning groove 511, second stop groove 512, drive part 520, second positioning plate 530, second clamping plate 540, second guide rod 541, second mounting base 550, second compression spring 560, second linkage plate 570, second pull rod 571, second pull plate 580. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0036] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0037] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0038] Reference Figures 1 to 7 As shown, an embodiment of the present invention discloses a channel steel bending machine for producing a combined valve base, used to bend a channel steel 100 comprising a first segment 101 and a second segment 102. The first segment 101 has a plurality of connecting holes 103 on its sidewall in the width direction. The channel steel bending machine for producing a combined valve base includes a frame 200, a support plate 300, and a bending device 500. It should be noted that the channel steel 100 processed in this embodiment includes one first segment 101 and two second segments 102, with the two second segments 102 located at both ends of the first segment 101. A bending groove 104 is pre-processed between the first segment 101 and the second segments 102. The second segments 102 at both ends are bent separately. Both the first segment 101 and the second segment 102 have a plurality of connecting holes 103 on their sidewalls in the width direction.

[0039] A support plate 300 is horizontally mounted on the top of the frame 200. The support plate 300 supports the first segment 101. A first positioning groove 301, distributed along a first horizontal direction, is provided on the upper side of the support plate 300. The first positioning groove 301 is used for embedding the first segment 101 to position it along a second horizontal direction. A positioning post 400 is provided on one side of the first positioning groove 301 along the second horizontal direction. The positioning post 400 is adjustable along the second horizontal direction and is used to insert into one of the connecting holes 103 of the first segment 101. The second horizontal direction is aligned with the first water... The horizontal direction is vertical. It can be understood that when the first segment 101 of the channel steel 100 is placed on the support plate 300, the groove of the channel steel 100 faces upward. After the channel steel 100 is placed in the first positioning groove 301, it is distributed along the first horizontal direction. The first segment 101 is positioned along the second horizontal direction through the first positioning groove 301. The first segment 101 is vertically positioned and positioned along the first horizontal direction by inserting the positioning post 400 into the connecting hole 103 of the first segment 101, thereby fixing the first segment 101 and preventing the first segment 101 from moving freely when bending.

[0040] The bending device 500 includes an abutment portion 510 and a drive portion 520. The abutment portion 510 is rotatably disposed on one side of the support plate 300 along the first horizontal direction. The drive portion 520 is connected to the abutment portion 510 and is used to drive the abutment portion 510 to rotate. The rotation axis of the abutment portion 510 is distributed along the second horizontal direction. A second positioning groove 511 is provided on one side of the abutment portion 510 for the second segment 102 to be embedded and positioned. The second positioning groove 511 is distributed along a direction perpendicular to the second horizontal direction. The second segment 102 is positioned along the second horizontal direction through the second positioning groove 511. The abutment portion 510 is used to abut and push the second segment 102 to bend upward 90 degrees relative to the first segment 101 during rotation. The second positioning groove 511 is used to accommodate the second segment 102 when the abutment portion 510 drives the second segment 102 to rotate, so as to prevent the second segment 102 from being misaligned and deformed. Specifically, the drive unit 520 is configured as a hydraulic cylinder, the fixed end of the hydraulic cylinder is hinged to the frame 200 and the hinge axis is distributed along the second horizontal direction, the telescopic end of the hydraulic cylinder is hinged to the abutment part 510 and the hinge axis is distributed along the second horizontal direction.

[0041] In use, first rotate the abutment part 510 to a position where the first segment 101 can be inserted into the first positioning groove 301 and the second segment 102 can be inserted into the second positioning groove 511. Then, place the first segment 101 of the channel steel 100 into the first positioning groove 301 and insert the second segment 102 into the second positioning groove 511 to position the first segment 101 and the second segment 102 respectively along the second horizontal direction. Then, adjust the position of the channel steel 100 along the first horizontal direction so that the bending groove 104 between the first segment 101 and the second segment 102 is in a preset bending position. Then, insert the positioning pin 400 into the corresponding connecting hole 103 to position the first segment 101 along the first horizontal direction and the vertical direction. Finally, drive the abutment part 510 to rotate, thereby abutting and pushing the second segment 102 to bend upwards by 90 degrees relative to the first segment 101. The combined valve base production channel steel bending machine with the above-described structure can support the first segment 101 with the support plate 300 and position the first segment 101 with the first positioning groove 301 and the positioning column 400, thereby fixing the position of the first segment 101 and preventing it from moving arbitrarily during bending. Furthermore, by providing a second positioning groove 511 on one side of the abutment part 510 for the second segment 102 to be inserted, when the abutment part 510 rotates to push the second segment 102 to bend at 90 degrees, the second positioning groove 511 can position the second segment 102 along the second horizontal direction, preventing the second segment 102 from being misaligned and deformed relative to the first segment 101, resulting in high bending quality.

[0042] It is understandable that when designing the position of the positioning post 400, it should be ensured that when the bending groove 104 is in the preset bending position, the positioning post 400 can be inserted into the connection hole 103 adjacent to the bending groove 104 on the first segment 101.

[0043] In some specific embodiments, the abutment portion 510 is configured as a push plate, with one end of the push plate near the support plate 300 rotatably mounted on the frame 200. During rotation, the push plate has at least one horizontal state and one vertical state. When the push plate is in the horizontal state, its upper surface is flush with the upper surface of the support plate 300. Thus, while the first segment 101 of the channel steel 100 is supported by the support plate 300, the second segment 102 of the channel steel 100 can also be supported by the push plate. This horizontal state is the initial state before bending. In the vertical position, the push plate is perpendicular to the support plate 300 and abuts against the side of the second segment 102 against the edge of the support plate 300. When the push plate rotates from the horizontal to the vertical position, it abuts against and pushes the second segment 102 to bend upwards at a 90-degree angle relative to the first segment 101. It is obvious that the abutting part 510 is set as a plate-like structure, which can increase the contact area with the second segment 102, making the force on the second segment 102 more even and less prone to deformation during bending. Furthermore, in order to limit the rotation stroke of the push plate, the frame 200 itself can be used to support the push plate when it is in the horizontal position, and a stop block can be provided on the support plate 300 to abut against the side of the push plate against the second segment 102 when the push plate is in the vertical position.

[0044] Reference Figure 1 and Figure 2 As shown, it can be understood that the upper side of the support plate 300 is provided with a first positioning plate 310 and a first clamping plate 320 that are parallel to each other. The first positioning plate 310 and the first clamping plate 320 are both perpendicular to the support plate 300 and distributed parallel to the first horizontal direction. The first positioning groove 301 is formed between the first positioning plate 310 and the first clamping plate 320, that is, the first segment 101 is positioned along the second horizontal direction by means of the first positioning plate 310 and the first clamping plate 320. The contact area is large and the structure is stable and reliable. Among them, the first positioning plate 310 is fixed on the support plate 300, the first clamping plate 320 is adjustablely provided on the upper side of the support plate 300 along the second horizontal direction, and the positioning post 400 is provided on the first clamping plate 320 and can move synchronously with the first clamping plate 320 along the second horizontal direction. The positioning post 400 is adjusted along the second horizontal direction by adjusting the first clamping plate 320 along the second horizontal direction. Since the connecting hole 103 on the first segment 101 is relatively small, the size of the positioning post 400 that matches it is also relatively small. If the positioning post 400 is adjusted along the second horizontal direction alone, the structural design is complicated and the operation is inconvenient. Therefore, the positioning post 400 is installed on the first clamping plate 320 by adjusting the first clamping plate 320 along the second horizontal direction. The structural design is simpler and easier to adjust. The first clamping plate 320 can be designed to be continuously adjusted along the second horizontal direction. In this way, the first clamping plate 320 and the first positioning plate 310 can be used to tightly clamp the first segment 101, reducing the possibility of the first segment 101 moving during bending.

[0045] For example, in some specific embodiments, refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, a first mounting base 330 is provided on the support plate 300, and two first guide rods 321 are fixedly provided on the first clamping plate 320. The two first guide rods 321 are distributed along the second horizontal direction and slide through the first mounting base 330, so that the position of the first clamping plate 320 can be continuously adjusted along the second horizontal direction. A first compression spring 340 is sleeved on the first guide rod 321. The first compression spring 340 is located between the first mounting base 330 and the first clamping plate 320, and its two ends abut against the first mounting base 330 and the first clamping plate 320 respectively. An elastic force is applied to the first clamping plate 320 in the direction of the first positioning plate 310. In this way, the elastic force is used to make the first clamping plate 320 and the first positioning plate 310 tightly clamp the first segment 101, thereby improving the positioning stability of the first segment 101. Adjusting the first clamping plate 320 in the second horizontal direction is also quick and convenient. When it is necessary to adjust the first clamping plate 320 in the second horizontal direction so that the positioning post 400 avoids the picking and placing path of the channel steel 100, it is only necessary to apply a force opposite to the elastic force of the first compression spring 340 to the first clamping plate 320.

[0046] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, it can be understood that a first linkage plate 350 is connected between the two first guide rods 321. The first linkage plate 350 is located on the side of the first mounting base 330 away from the first clamping plate 320. A first pull rod 351 distributed along the second horizontal direction is fixed on the first linkage plate 350. When the first pull rod 351 moves away from the first mounting base 330 along the second horizontal direction, it can drive the two first guide rods 321 to move synchronously. Thus, when picking up or putting down the channel steel 100, in order to make the positioning post 400 avoid the picking and putting path of the channel steel 100, the first clamping plate 320 can be moved away from the first positioning plate 310 by pulling the first pull rod 351. The first pull rod 351 provides the operator with a better position for applying force and is more convenient to use. In some specific embodiments, the first linkage plate 350 is provided with two first sliding holes, which are respectively slidably engaged with two first guide rods 321. The first guide rods 321 are also connected to a first limiting nut 323 on the side of the first linkage plate 350 away from the first mounting base 330, so as to limit the first linkage plate 350 and prevent the first guide rods 321 from disengaging from the first mounting base 330. With this arrangement, the first clamping plate 320 and the first compression spring 340 are very convenient to assemble and disassemble. It can be understood that when the first pull rod 351 moves away from the first mounting base 330 along the second horizontal direction, the first linkage plate 350 abuts against the first limiting nut 323 to pull the first guide rod 321 to move synchronously.

[0047] Reference Figures 1 to 6 As shown, it can be understood that a first pull plate 360 ​​is rotatably mounted on the first pull rod 351, and the rotation axis of the first pull plate 360 ​​is the center line of the first pull rod 351. A vertically penetrating first stop groove 302 is provided on the side of the first mounting base 330 opposite to the first clamping plate 320. The first stop groove 302 is distributed along a first horizontal direction. The first pull plate 360 ​​can move synchronously with the first pull rod 351 along a second horizontal direction. The first pull plate 360 ​​can move along the second horizontal direction until it is vertically aligned with the first stop groove 302 and rotate until it is partially embedded in the first stop groove 302. The side wall of the first stop groove 302 abuts against the first pull plate 360 ​​to prevent the first clamping plate 320 from... The first positioning plate 310 is moved to fix the position of the first clamping plate 320. When the first pull plate 360 ​​is partially embedded in the first stop groove 302, the distance between the positioning post 400 and the first positioning plate 310 is greater than the width of the first segment 101. In this way, the first segment 101 of the channel steel 100 can be placed between the first clamping plate 320 and the first positioning plate 310 or removed from between the two without the first segment 101 interfering with the positioning post 400. The advantage of the above arrangement is that when the channel steel 100 is picked up or put down before or after processing, the first stop groove 302 can be used to hook the first pull plate 360 ​​to fix the position of the first clamping plate 320, freeing the operator's hands to perform other operations. In some specific embodiments, the first pull rod 351 is threaded with two first mounting nuts 352. The distance between the two first mounting nuts 352 is slightly greater than the thickness of the first pull plate 360. The first pull plate 360 ​​is provided with a first sleeve hole and is sleeved on the first pull rod 351 through the first sleeve hole. The first pull plate 360 ​​is located between the two first mounting nuts 352, so as to realize the rotational installation of the first pull plate 360.

[0048] Reference Figures 1 to 7As shown, it can be understood that a second positioning plate 530 and a second clamping plate 540, which are parallel to each other, are provided on one side of the abutment portion 510. A second positioning groove 511 is formed between the second positioning plate 530 and the second clamping plate 540. The second positioning plate 530 is fixedly disposed on the abutment portion 510, and the second clamping plate 540 is adjustablely disposed on the abutment portion 510 along the second horizontal direction, that is, the distance between the second clamping plate 540 and the second positioning plate 530 is adjustable. In addition, a first positioning plate 310 and a first clamping plate 320, which are parallel to each other, are provided on the upper side of the support plate 300, and a first positioning groove 301 is formed in the abutment portion 510. Between the first positioning plate 310 and the first clamping plate 320, the first positioning plate 310 is fixed on the support plate 300, and the first clamping plate 320 is adjustablely disposed on the upper side of the support plate 300 along the second horizontal direction. That is, the distance between the first positioning plate 310 and the first clamping plate 320 is also adjustable. In this way, this embodiment can be applied to the processing of channel steel 100 of various sizes and specifications, with a wide processing range. Since the height of the connecting hole 103 of channel steel 100 of different sizes and specifications will also vary, the positioning post 400 is vertically adjustable and disposed on the first clamping plate 320 for matching.

[0049] In some specific embodiments, the first clamping plate 320 is provided with an adjustment groove 322 that runs through its thickness and is vertically distributed. The positioning post 400 includes an insertion section 410 and an installation section 420 that are distributed sequentially along its axial direction. A stepped surface is formed between the insertion section 410 and the installation section 420. The stepped surface abuts against the first clamping plate 320. The insertion section 410 is located between the first positioning plate 310 and the first clamping plate 320. The insertion section 410 is used to insert into the connecting hole 103. The installation section 420 passes through the adjustment groove 322 and is threadedly connected to a locking nut 430. The positioning post 400 is locked onto the first clamping plate 320 by the locking nut 430. When it is necessary to adjust the positioning post 400 vertically, first loosen the locking nut 430, then slide the positioning post 400 vertically to the corresponding position, and finally tighten the locking nut 430. The adjustment is very convenient. It should be noted that the connecting hole 103 on the channel steel 100 is usually an elliptical hole, while in this embodiment, the positioning post 400 is set as a cylinder to ensure that the positioning post 400 can be inserted into the connecting hole 103 when it rotates around its own axis to any position.

[0050] Furthermore, multiple adjustment slots 322 are spaced apart along the first horizontal direction. The positioning post 400 can be installed at different positions of the adjustment slots 322. It is understood that for channel steel 100 of different specifications, the position of the connecting hole 103 will not only differ in height, but also in position in the first horizontal direction (based on the orientation of the first segment 101 of the channel steel 100 when it is placed on the support plate 300). The distance from the connecting hole 103 of the first segment 101 adjacent to the bending groove 104 to the bending groove 104 varies in length. The bending groove 104 must be in a preset bending position to ensure that the bending is in place. Therefore, in order to be suitable for positioning of channel steel 100 of various specifications, this embodiment provides multiple adjustment slots 322 spaced apart along the first horizontal direction for matching. If there are n adjustment slots 322, this embodiment is suitable for at least n specifications of channel steel 100.

[0051] Furthermore, the support plate 300 is provided with a first mounting base 330 whose position can be continuously adjusted along the first horizontal direction. The first clamping plate 320 is adjustablely disposed on the first mounting base 330 along the second horizontal direction. By continuously adjusting the first mounting base 330 along the first horizontal direction, the positioning post 400 can be continuously adjusted along the first horizontal direction. In this way, this embodiment can be applied to more specifications of channel steel 100, rather than being limited to only a few specifications of channel steel 100. Obviously, in this embodiment, the position of the positioning post 400 in the first horizontal direction can be adjusted by installing the positioning post 400 into different adjustment slots 322, and the position of the positioning post 400 in the first horizontal direction can also be adjusted by adjusting the first mounting base 330 along the first horizontal direction. When adjusting the position of the positioning post 400, the two are performed in combination. The former is for coarse adjustment of the position of the positioning post 400, and the latter is for fine adjustment of the position of the positioning post 400. Specifically, the support plate 300 is provided with slide rails 370 distributed along the first horizontal direction. The first mounting base 330 is slidably disposed on the slide rails 370 along the first horizontal direction. Set screws 380 are threaded through the slide rails 370 to lock the first mounting base 330 to the slide rails 370. Multiple set screws 380 are spaced apart along the first horizontal direction, so that the position of the first mounting base 330 can be continuously adjusted along the first horizontal direction. It should be noted that if only one adjustment groove 322 is provided to allow the first mounting base 330 to be adjusted along the first horizontal direction, when the distance from the connecting hole 103 adjacent to the bending groove 104 on the first segment 101 to the bending groove 104 is very short, adjusting the first mounting base 330 may cause the first clamping plate 320 to extend to the bending groove 104. In this case, during the bending operation, the first clamping plate 320 will interfere with the abutment part 510 of the bending device 500. Therefore, multiple adjustment grooves 322 are required for coordinated use.

[0052] In some embodiments, the abutment portion 510 is configured as a push plate, on which a second mounting base 550 is fixedly mounted. Two second guide rods 541 are fixedly mounted on a second clamping plate 540. The two second guide rods 541 are distributed along a second horizontal direction and slidably pass through the second mounting base 550. A second compression spring 560 is sleeved on each of the second guide rods 541. The second compression spring 560 is located between the second mounting base 550 and the second clamping plate 540, and its two ends abut against the second mounting base 550 and the second clamping plate 540 respectively to apply pressure towards... The elastic force of the second positioning plate 530 is applied to the second clamping plate 540. In this way, the elastic force is used to make the second clamping plate 540 cooperate with the second positioning plate 530 to tightly clamp the second segment 102. This not only makes it suitable for channel steel 100 of various width specifications, but also improves the stability when positioning the second segment 102 of the channel steel 100. When it is necessary to adjust the second clamping plate 540 along the second horizontal direction to facilitate the placement of the channel steel 100, it is only necessary to apply a force opposite to the elastic force of the second compression spring 560 to the second clamping plate 540. Furthermore, a second linkage plate 570 is connected between the two second guide rods 541. The second linkage plate 570 is located on the side of the second mounting base 550 away from the second clamping plate 540. The second linkage plate 570 has two second sliding holes, which are slidably engaged with the two second guide rods 541 respectively. A second limiting nut is also connected to the second guide rod 541 on the side of the second linkage plate 570 away from the second mounting base 550. A second pull rod 571 is fixed on the second linkage plate 570, distributed along a second horizontal direction. When the second pull rod 571 moves away from the second mounting base 550 along the second horizontal direction, it can drive the second guide rod 541 to move synchronously. Thus, when placing the channel steel 100, the second clamping plate 540 can be moved away from the second positioning plate 530 by pulling the second pull rod 571. Furthermore, a second pull plate 580 is rotatably mounted on the second pull rod 571. The rotation axis of the second pull plate 580 is... Centerline of the second pull rod 571, the push plate on the side of the second mounting base 550 opposite to the second clamping plate 540 is provided with a second stop groove 512 that runs through the thickness direction of the push plate. The second pull plate 580 can move synchronously with the second pull rod 571 in the second horizontal direction. The second pull plate 580 can move in the second horizontal direction to align with the second stop groove 512 and rotate to partially embed into the second stop groove 512. The side wall of the second stop groove 512 abuts against the second pull plate 580 to prevent the second clamping plate 540 from moving toward the second positioning plate 530, thus fixing the position of the second clamping plate 540. When the second pull plate 580 is partially embedded in the second stop groove 512, the distance between the second clamping plate 540 and the second positioning plate 530 is greater than the width of the second segment 102. In this way, the second segment 102 of the channel steel 100 can be placed between the second clamping plate 540 and the second positioning plate 530 or removed from between the two, making it convenient to put in and take out.Specifically, the second pull rod 571 is threaded with two second mounting nuts. The distance between the two second mounting nuts is slightly greater than the thickness of the second pull plate 580. The second pull plate 580 has a second sleeve hole and is fitted onto the second pull rod 571 through the second sleeve hole. The second pull plate 580 is located between the two second mounting nuts, thus enabling the rotational installation of the second pull plate 580. It should be noted that, in order to improve the versatility of parts and reduce costs, the first clamping plate 320 and the second clamping plate 540 use the same parts, the first compression spring 340 and the second compression spring 560 use the same parts, the first linkage plate 350 and the second linkage plate 570 use the same parts, and the first pull plate 360 ​​and the second pull plate 580 use the same parts. Moreover, the mounting structures of the above parts are the same. In addition, the first mounting base 330 and the second mounting base 550 use the same parts. The difference is that the former is adjustablely mounted on the support plate 300, while the latter is fixed to the push plate.

[0053] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A channel steel bending machine for producing a combined valve base, used to bend a channel steel (100) comprising a first section (101) and a second section (102), wherein the first section (101) has a plurality of connecting holes (103) on its side wall in the width direction, characterized in that, include: Rack (200); A support plate (300) is horizontally disposed on the top of the frame (200) for supporting the first segment (101). The upper side of the support plate (300) is provided with a first positioning groove (301) distributed along a first horizontal direction. The first positioning groove (301) is used for the first segment (101) to be embedded and positioned. A positioning post (400) that can be adjusted along a second horizontal direction is provided on one side of the first positioning groove (301). The positioning post (400) is used to be inserted into the connecting hole (103). The second horizontal direction is perpendicular to the first horizontal direction. The bending device (500) includes an abutment portion (510) rotatably disposed on one side of the support plate (300) along the first horizontal direction and a driving portion (520) for driving the abutment portion (510) to rotate. The rotation axis of the abutment portion (510) is distributed along the second horizontal direction. A second positioning groove (511) is provided on one side of the abutment portion (510) for the second segment (102) to be inserted and positioned. The abutment portion (510) is used to abut against and push the second segment (102) to bend upward 90 degrees relative to the first segment (101) during rotation. The support plate (300) is provided with a first positioning plate (310) and a first clamping plate (320) that are parallel to each other on the upper side. The first positioning groove (301) is formed between the first positioning plate (310) and the first clamping plate (320). The first positioning plate (310) is fixed to the support plate (300). The first clamping plate (320) is adjustablely disposed on the upper side of the support plate (300) along the second horizontal direction. The positioning post (400) is disposed on the first clamping plate (320) and can move synchronously with the first clamping plate (320). The support plate (300) is provided with a first mounting seat (330), and the first clamping plate (320) is fixedly provided with two first guide rods (321). The first guide rods (321) are distributed along the second horizontal direction and slide through the first mounting seat (330). A first compression spring (340) is sleeved on the first guide rod (321) to apply an elastic force toward the first positioning plate (310) to the first clamping plate (320). A first linkage plate (350) is connected between the two first guide rods (321). The first linkage plate (350) is located on the side of the first mounting base (330) away from the first clamping plate (320). A first pull rod (351) is fixed on the first linkage plate (350) and distributed along the second horizontal direction. When the first pull rod (351) moves away from the first mounting base (330) along the second horizontal direction, it can drive the two first guide rods (321) to move synchronously. The first pull rod (351) is rotatably provided with a first pull plate (360), the rotation axis of the first pull plate (360) is collinear with the center line of the first pull rod (351), the support plate (300) is provided with a vertically penetrating first stop groove (302), the first stop groove (302) is distributed along the first horizontal direction, wherein the first pull plate (360) can move synchronously with the first pull rod (351) to be vertically aligned with the first stop groove (302) and rotate to be partially embedded in the first stop groove (302), when the first pull plate (360) is partially embedded in the first stop groove (302), the distance between the positioning post (400) and the first positioning plate (310) is greater than the width dimension of the first segment (101); The first clamping plate (320) is provided with a plurality of adjustment slots (322) that are vertically distributed and spaced apart along the first horizontal direction, and the positioning post (400) can be installed at different positions of the adjustment slots (322), and the positioning post (400) is vertically adjustable in the adjustment slots (322). The first mounting base (330) can be continuously adjusted in position along the first horizontal direction.

2. The channel steel bending machine for producing combined valve bases according to claim 1, characterized in that: The abutting part (510) is configured as a push plate, which has a horizontal state during rotation so that the upper surface of the push plate is flush with the upper surface of the support plate (300).

3. The channel steel bending machine for producing combined valve bases according to claim 1, characterized in that: The abutment portion (510) has a second positioning plate (530) and a second clamping plate (540) that are parallel to each other on one side. The second positioning groove (511) is formed between the second positioning plate (530) and the second clamping plate (540). The second positioning plate (530) is fixedly disposed on the abutment portion (510), and the second clamping plate (540) is adjustablely disposed on the abutment portion (510) along the second horizontal direction.

4. The channel steel bending machine for producing combined valve bases according to claim 3, characterized in that: The positioning post (400) includes an insertion section (410) and an installation section (420) distributed sequentially along its axial direction. A stepped surface is formed between the insertion section (410) and the installation section (420). The stepped surface abuts against the first clamping plate (320). The installation section (420) passes through the adjustment groove (322) and is threadedly connected to a locking nut (430).

5. The channel steel bending machine for producing combined valve bases according to claim 4, characterized in that: The support plate (300) is provided with slide rails (370) distributed along the first horizontal direction. The first mounting seat (330) is slidably disposed on the slide rails (370). Set screws (380) are threaded through the slide rails (370) for locking the first mounting seat (330) to the slide rails (370). Multiple set screws (380) are provided at intervals along the first horizontal direction.

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