A clamping fixture for rounding the edges of sheet metal

Abstract

This utility model discloses a clamping fixture for machining the rounded corners of sheet metal edges, relating to the field of machining technology. The clamping fixture includes: a base plate, a clamping cylinder, a clamping seat, a locating pin, an ejector sleeve, and a spring; the clamping seat is fixedly connected to the base plate; the clamping cylinder is fixedly connected to the base plate and located on the opposite side of the clamping seat, and a pressure plate is fixedly connected to the drive rod of the clamping cylinder; two channels are spaced apart on the side wall of the clamping seat facing the clamping cylinder; a locating pin is coaxially fixed in each channel, and the diameter of the locating pin is smaller than the inner diameter of the channel. This utility model can achieve stable clamping of sheet metal, ensuring the accuracy of rounded corner machining in machining centers; at the same time, after machining, no manual intervention or additional drive components are required, and the material can be automatically unloaded relying on the spring and ejector sleeve, which reduces labor intensity and equipment costs, avoids interruption of the machining process, and improves work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a clamping fixture for machining the rounded corners of sheet metal edges. Background Technology

[0002] In the corrugated cardboard processing industry, the corrugated cardboard crease forming mold (made from the board material) is the core component that determines the crease accuracy and forming quality of the corrugated cardboard. The smoothness of its edge rounded corners and the consistency of its dimensions directly affect the cardboard fit and crease regularity during crease forming.

[0003] To meet the precise assembly requirements of subsequent corrugated cardboard processing equipment, the rounded corners of the edges of such forming molds need to be processed by a machining center. Before the machining center starts processing, the board material to be processed for forming molds must be pre-fixed on the worktable of the machining center using clamping fixtures.

[0004] In the process of performing the above-mentioned clamping operation using traditional tooling, the inventors discovered that traditional tooling has obvious technical problems in the material unloading stage, specifically manifested as follows:

[0005] Firstly, after the rounded corners of the board are processed, it is generally necessary to manually remove the board from the tooling. This method increases the labor intensity and the manual unloading action will directly interrupt the continuous operation of the machining center, resulting in a decrease in overall processing efficiency.

[0006] Secondly, although some relatively automated tooling has a feeding mechanism, such feeding mechanisms mostly rely on additional drive components (such as independent cylinders) to realize the ejection function of the sheet metal, which not only makes the overall structure of the tooling more complex, but also increases the manufacturing cost of the equipment.

[0007] Therefore, how to solve the above-mentioned technical problems is an urgent issue that needs to be addressed by those skilled in the art.

[0008] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0009] To address the aforementioned technical problems, this utility model provides a clamping fixture for processing rounded corners on the edges of sheet metal, thereby solving the problems mentioned in the background art.

[0010] This utility model provides the following technical solution: a clamping fixture for processing the rounded corners of sheet metal edges, comprising: a base plate, a clamping cylinder, a clamping seat, a positioning pin, an ejector sleeve, and a spring;

[0011] The clamping seat is fixed to the base plate; the clamping cylinder is fixed to the base plate and located on the opposite side of the clamping seat, and a pressure plate is fixed to the drive rod of the clamping cylinder;

[0012] Two channels are spaced apart on the side wall of the clamping seat facing the clamping cylinder; a locating pin is coaxially fixed in each channel, and the diameter of the locating pin is smaller than the inner diameter of the channel.

[0013] A spring is fitted onto the locating pin inside the channel, and one side of the spring is fixed to the wall of the channel.

[0014] The ejector sleeve is fitted onto the locating pin. The inner end of the ejector sleeve is fixed to the other side of the spring, and the outer end of the ejector sleeve protrudes out of the channel.

[0015] Preferably, a limiting guide groove is formed on the wall of the channel along its axial direction; a guide block that slides in cooperation with the limiting guide groove is provided on the outer peripheral wall of the ejector bushing.

[0016] Preferably, an annular sealing plate is fixed to the inner wall of the opening of the channel; wherein the length of the guide block is less than the length of the ejector sleeve, so that the outer end of the positioning sleeve can protrude out of the channel.

[0017] Preferably, it also includes a fixing block fixed to the base plate, and the clamping cylinder is fixed to the fixing block.

[0018] Preferably, the pressure plate has a positioning groove that engages with the positioning pin.

[0019] Preferably, the clamping cylinder includes two cylinders, and a pressure plate is fixedly connected to the drive rod of each clamping cylinder.

[0020] The present invention provides a clamping fixture for processing rounded corners on the edges of sheet metal, which has the following advantages: The present invention can achieve stable clamping of sheet metal, ensuring the accuracy of rounded corner processing in the machining center; at the same time, after processing, no manual labor or additional drive components are required, and the material can be automatically unloaded by relying on springs and ejector bushings, which reduces the intensity of manual labor and equipment costs, avoids interruption of the processing flow, and improves work efficiency. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the present invention from angle one;

[0022] Figure 2 This is a schematic diagram of the structure of this utility model from angle two;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the clamping seat in this utility model.

[0024] Figure 4 This utility model Figure 3 A magnified view of part A in the image;

[0025] Figure 5 This utility model Figure 3 A magnified view of part B in the image;

[0026] in, Figure 5 This is a schematic diagram of the structure after the ejector bushing has been removed;

[0027] Figure 6 This is a schematic diagram of the ejector bushing structure in this utility model;

[0028] Figure 7 This is a schematic diagram of the structure for clamping the sheet metal according to the present invention. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described 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.

[0030] See Figures 1-7 To address the problems mentioned in the background section, this utility model provides a clamping fixture for processing rounded corners on sheet metal edges, thereby solving the aforementioned technical problems. The technical solution is as follows:

[0031] A clamping fixture for processing rounded corners of sheet metal includes: a base plate 110, a clamping cylinder 130, a clamping seat 170, a locating pin 150, an ejector bushing 160, and a spring 173.

[0032] The clamping seat 170 is fixedly connected to the base plate 110; the clamping cylinder 130 is fixedly connected to the base plate 110 and located on the opposite side of the clamping seat 170, and a pressure plate 140 is fixedly connected to the drive rod of the clamping cylinder 130.

[0033] Two channels 171 are provided at intervals on the side wall of the clamping seat 170 facing the clamping cylinder 130; a positioning pin 150 is coaxially fixed in each channel 171, and the diameter of the positioning pin 150 is smaller than the inner diameter of the channel 171.

[0034] A spring 173 is fitted on the locating pin 150 inside the channel 171, and one side of the spring 173 is fixed to the wall of the channel 171.

[0035] The ejector sleeve 160 is fitted onto the locating pin 150. The inner end of the ejector sleeve 160 is fixed to the other side of the spring 173, and the outer end of the ejector sleeve 160 protrudes out of the channel 171.

[0036] In this embodiment, a limiting guide groove 172 is formed on the wall of the channel 171 along its axial direction; a guide block 161 that slides in cooperation with the limiting guide groove 172 is provided on the outer peripheral wall of the ejector bushing 160.

[0037] It should be noted that the limiting guide groove 172 cooperates with the guide block 161 to provide precise guidance for the axial movement of the ejector sleeve 160 along the positioning pin 150, ensuring its smooth extension and retraction; on the other hand, it can limit the circumferential rotation of the ejector sleeve 160, ensuring the stability of the ejection process.

[0038] In this embodiment, an annular sealing plate 175 is fixedly connected to the inner wall of the opening of the channel 171; wherein, the length of the guide block 161 is less than the length of the ejector sleeve 160, so that the outer end of the positioning sleeve 160 can protrude out of the channel 171.

[0039] It should be noted that the annular sealing plate 175 can block the ejector sleeve 160 and limit its movement stroke, preventing it from completely dislodging from the opening of the channel 171 under the action of spring force; the guide block 161 is shorter than the ejector sleeve 160, which can reserve enough space for the ejector sleeve to extend without affecting the guide block's cooperation with the limiting guide groove to achieve guidance, ensuring that its outer end can protrude out of the channel 171.

[0040] In this embodiment, a fixing block 120 is fixedly connected to the base plate 110, and a clamping cylinder 130 is fixedly connected to the fixing block 120.

[0041] In this embodiment, the pressure plate 140 is provided with a positioning groove that engages with the positioning pin 150; preferably, the clamping cylinder 130 is a dual-axis cylinder.

[0042] In this embodiment, there are two clamping cylinders 130, and a pressure plate 140 is fixedly connected to the drive rod of each clamping cylinder 130.

[0043] The present invention provides a method for storing a clamping fixture used for rounding the edges of sheet metal, as follows:

[0044] (1) Securely install the base plate 110 on the worktable of the machining center beforehand; Figure 7 As shown, the operator / robotic arm suspends the sheet material 200 to be processed (the sheet material has two pre-set mounting holes for subsequent assembly with bending die equipment) on the positioning pin 150 of the clamping seat 170 through the mounting holes.

[0045] (2) The drive rod of the clamping cylinder 130 is extended, pushing the pressure plate 140 to move towards the clamping seat 170. As the pressure plate 140 gradually approaches the plate, the positioning groove on the pressure plate 140 is precisely engaged with the positioning pin 150 on the clamping seat 170 until the pressure plate 140 pushes the plate to press against the clamping seat 170. At this time, the ejector sleeve 160 moves along the positioning pin 150 into the channel 171 due to the pressing action of the plate and is completely pushed into the channel 171.

[0046] (3) After the tooling completes the clamping of the plate, the machining center performs rounding on the edges 210 of the plate 200 according to the preset program. After the rounding of the plate edges is completed, the drive rod of the clamping cylinder 130 is controlled to retract, driving the pressure plate 140 to move away from the clamping seat 170 until the pressure plate 140 is completely separated from the plate, releasing the clamping constraint on the plate. At this time, the compressed spring 173 in the channel 171 recovers its deformation, and the generated elastic force pushes the ejector sleeve 160 to move along the positioning pin 150 to the outside of the channel 171, ejecting the plate and disengaging it from the clamping seat 170, thus realizing automatic unloading.

[0047] The present invention provides a clamping fixture for processing rounded corners on the edges of sheet metal, which has the following advantages: The present invention can achieve stable clamping of sheet metal, ensuring the accuracy of rounded corner processing in the machining center; at the same time, after processing, no manual labor or additional drive components are required, and the material can be automatically unloaded by relying on springs and ejector bushings, which reduces the intensity of manual labor and equipment costs, avoids interruption of the processing flow, and improves work efficiency.

[0048] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims.

Claims

1. A clamping fixture for processing rounded corners on sheet metal edges, characterized in that, include: Base plate, clamping cylinder, clamping seat, locating pin, ejector bushing and spring; The clamping seat is fixed to the base plate; the clamping cylinder is fixed to the base plate and located on the opposite side of the clamping seat, and a pressure plate is fixed to the drive rod of the clamping cylinder; Two channels are spaced apart on the side wall of the clamping seat facing the clamping cylinder; a locating pin is coaxially fixed in each channel, and the diameter of the locating pin is smaller than the inner diameter of the channel. A spring is fitted onto the locating pin inside the channel, and one side of the spring is fixed to the wall of the channel. The ejector sleeve is fitted onto the locating pin. The inner end of the ejector sleeve is fixed to the other side of the spring, and the outer end of the ejector sleeve protrudes out of the channel.

2. The clamping fixture for processing the rounded corners of sheet metal edges according to claim 1, characterized in that, A limiting guide groove is formed on the wall of the duct along its axial direction; a guide block that slides in conjunction with the limiting guide groove is provided on the outer peripheral wall of the ejector bushing.

3. The clamping fixture for processing the rounded corners of sheet metal edges according to claim 2, characterized in that, An annular sealing plate is fixed to the inner wall of the opening of the channel; wherein the length of the guide block is less than the length of the ejector sleeve, so that the outer end of the positioning sleeve can protrude out of the channel.

4. The clamping fixture for processing the rounded corners of sheet metal edges according to claim 1, characterized in that, It also includes a fixing block fixed to the base plate, and the clamping cylinder is fixed to the fixing block.

5. The clamping fixture for rounding the edges of sheet metal according to claim 1, characterized in that, The pressure plate has a positioning groove that engages with the positioning pin.

6. The clamping fixture for rounding the edges of sheet metal according to claim 1, characterized in that, The clamping cylinders consist of two cylinders, and a pressure plate is fixedly connected to the drive rod of each clamping cylinder.

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