Workpiece positioning device and workpiece processing device

Abstract

The utility model discloses a work piece stop device relates to mechanical equipment field, solves the problem of low efficiency of whole process when the existing accessory is installed to work piece, adopts manual stop mode, including support part, fixed installation in the one side of workstation, is provided with height lifting cylinder on the support part, mounting panel is set up on the support part, is connected with the drive shaft of height lifting cylinder, and height lifting cylinder drives mounting panel to reciprocate in vertical direction, limit mechanism is set up on the mounting panel and includes linear guide rail and transverse cylinder, and transverse cylinder drives linear guide rail to reciprocate along horizontal direction, and the end part of linear guide rail towards workstation is provided with limit block, and when linear guide rail moves towards workstation, limit block and work piece on the workstation abut and limit. Avoid the problem of work piece movement through the use of limit block and limit, save artificial cost, and efficiency improves. The application also provides a work piece processing device.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment, and in particular to a workpiece limiting device and a workpiece processing device. Background Technology

[0002] During the assembly of a workpiece, when installing accessories onto the workpiece, a large force needs to be applied to the accessories because they need to be interference-fitted with the workpiece. The workpiece is usually installed with accessories on a workbench. This causes the workpiece to move due to the large force during installation, resulting in misalignment or incomplete installation of the accessories.

[0003] In the existing accessory installation process, one end of the workpiece is manually held in place for limitation, and then other workers install the other end. The two ends are assembled alternately using the same method. However, with the increase in product output and the shortage of labor, the method of manually holding the workpiece is not only inefficient and unable to meet actual needs, but also requires multiple people to cooperate, which is time-consuming, labor-intensive, and somewhat dangerous. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing methods of manually limiting the movement of accessories when installing them onto workpieces are inefficient, unsuitable for practical needs, require multiple people, are time-consuming and labor-intensive, and pose certain dangers. This invention provides a workpiece limiting device that uses limiting blocks to prevent workpiece movement. The entire process requires only one operator, greatly saving labor costs. Furthermore, the cylinder's movement speed is fast, significantly improving efficiency compared to manual limiting.

[0005] To solve the above-mentioned technical problems, the present invention discloses a workpiece limiting device for limiting the workpiece on the workbench. The device includes a support part, which is fixedly installed on one side of the workbench. A height lifting cylinder is provided on the support part. The device also includes a mounting plate and a limiting mechanism. The mounting plate is connected to the drive shaft of the height lifting cylinder and is used to reciprocate vertically under the drive of the height lifting cylinder. The limiting mechanism is mounted on the mounting plate. The limiting mechanism includes a transverse cylinder and a linear guide rail that moves horizontally driven by the transverse cylinder. A limiting block is provided on the linear guide rail. When the linear guide rail moves toward the worktable, the limiting block abuts against the workpiece on the worktable. The horizontal direction is the direction of movement toward the worktable.

[0006] By adopting the above technical solution, the problem of workpiece movement is avoided by using limit blocks for limiting, and the whole process only requires one person to operate, which greatly saves labor costs. In addition, the cylinder moves quickly, which greatly improves efficiency compared with manual limiting.

[0007] According to another specific embodiment of the present invention, the embodiment of the present invention discloses that a guide block is provided on the top of the mounting plate, the guide block has a guide groove that runs through in the horizontal direction, a linear guide rail passes through and extends out of the guide groove, and is guided by the guide groove.

[0008] According to another specific embodiment of the present invention, the embodiment of the present invention discloses that a transverse cylinder is disposed on the side of the mounting plate facing away from the worktable. The transverse cylinder includes a guide rod disposed in a horizontal direction. One end of the guide rod is connected to the drive shaft of the transverse cylinder, and the other end is connected to a linear guide rail through a connector to drive the linear guide rail to move.

[0009] According to another specific embodiment of the present invention, a slot is provided at the connection between the workbench and the support, and a mounting plate is disposed in the slot and can move vertically within the slot.

[0010] According to another specific embodiment of the present invention, the mounting plate is further provided with a displacement sensor, which is located at the top of the mounting plate and at the same height as the linear guide rail in the vertical direction, for detecting the vertical displacement height of the mounting plate.

[0011] According to another specific embodiment of the present invention, a pressure sensor is provided on the contact surface between the limiting block and the workpiece to detect the contact pressure when the limiting block contacts the workpiece on the worktable. When the contact pressure exceeds the pressure threshold, the pressure sensor is triggered, and the transverse cylinder stops driving the linear guide rail to move.

[0012] According to another specific embodiment of the present invention, the support part is provided with a guide groove in the vertical direction, and the mounting plate is provided with a slide rail corresponding to the guide groove. The slide rail is slidably installed in the guide groove and guided by the guide groove.

[0013] According to another specific embodiment of the present invention, the workpiece limiting device further includes a wire harness sheath, which is a chain-type sheath. The wire harness sheath is used to bundle and organize the air pipes and wire harnesses of the height lifting cylinder and the horizontal cylinder.

[0014] According to another specific embodiment of the present invention, the embodiment of the present invention discloses that it also includes a fixing claw, which is hinged to both ends of the limiting block. The fixing claw is used to clamp the workpiece on both sides after the limiting block abuts against the workpiece on the worktable, thereby limiting the workpiece.

[0015] The present invention also discloses a workpiece processing device, which includes a worktable, and workpiece limiting devices as described in the above specification are respectively provided at both ends of the worktable, with the two workpiece limiting devices arranged opposite to each other on the worktable.

[0016] The beneficial effects of this application are as follows: It provides a workpiece limiting device, which can avoid the problem of workpiece movement by using limiting blocks, and the whole process only requires one person to operate, which greatly saves labor costs. In addition, the cylinder moves quickly, which greatly improves the efficiency compared with manual limiting. Attached Figure Description

[0017] Figure 1 This diagram shows the overall structure of the workpiece limiting device according to an embodiment of the present invention. Figure 2 This is a partially enlarged view of the workpiece limiting device according to an embodiment of the present invention; Figure 3 This diagram shows the structure of the workpiece limiting device according to an embodiment of the present invention.

[0018] in: 1. Support section; 11. Guide groove; 2. Mounting plate; 21. Slide rail; 22. Guide block; 221. Guide groove; 3. Height lifting cylinder; 4. Lateral cylinder; 41. Guide rod; 5. Linear guide rail; 6. Limit block; 7. Connectors; 8. Workbench; 9. Wire harness sheath. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0020] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0022] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] Example 1: Reference Figures 1 to 3 This application provides a workpiece limiting device for limiting the workpiece on the worktable 8. It includes a support part 1, which is fixedly installed on one side of the worktable 8. A height lifting cylinder 3 is provided on the support part 1. It also includes a mounting plate 2 and a limiting mechanism. Mounting plate 2 is connected to the drive shaft of height lifting cylinder 3, and is used to move vertically under the drive of height lifting cylinder 3. Figure 1 (As shown in the Y direction) reciprocates; The limiting mechanism is mounted on the mounting plate 2, and includes a transverse cylinder 4 and a mechanism driven by the transverse cylinder 4 to move horizontally ( Figure 1 The linear guide 5 moves in the X direction (as shown in the middle). A limit block 6 is provided on the linear guide 5. When the linear guide 5 moves toward the worktable 8, the limit block 6 abuts against the workpiece on the worktable 8. The horizontal direction is the direction of movement toward the worktable 8.

[0025] In this embodiment, the support part 1 is made of metal and has a rectangular frame structure. The bottom is fixedly connected to one side of the workbench 8 by high-strength bolts to ensure the stability of the connection and to withstand the forces generated during the movement and limiting of subsequent components.

[0026] Mounting holes are machined on the inner frame of the support part 1, and the cylinder body of the height lifting cylinder 3 is fixed in the corresponding position by bolt and nut assembly. A buffer rubber pad is provided at the mounting position of the cylinder body. The buffer rubber pad is used to reduce the vibration generated when the cylinder is working and to prevent the vibration from being transmitted to the support part 1 and the worktable 8, which would affect the stability of the overall device and the machining accuracy of the workpiece.

[0027] Mounting plate 2 is made of metal, or optionally, of alloy. Alloy plates can reduce overall weight while maintaining strength. Mounting plate 2 is rigidly connected to the drive shaft of height lifting cylinder 3. A special coupling enables height lifting cylinder 3 to precisely drive mounting plate 2 to move smoothly back and forth in the vertical direction when the drive shaft is extended or retracted.

[0028] Alternatively, the mounting plate 2 can also be connected to the drive shaft of the height lifting cylinder 3 via a connector with a slot and bolt fixing.

[0029] In one feasible embodiment, linear guide devices are installed on the two side frames of the support part 1. The linear guide devices enable the straightness of the mounting plate 2 when it moves in the vertical direction. The linear guide devices can be a combination of linear slide rail 21 and slider. The slider is fixedly installed on the corresponding positions on both sides of the mounting plate 2. The linear slide rail 21 is installed on the frame of the support part 1 in the vertical direction. Under the drive of the height lifting cylinder 3, the mounting plate 2 can move smoothly and accurately back and forth along the linear slide rail 21, avoiding deviation, shaking and other situations.

[0030] The limiting mechanism is installed on the top of the mounting plate 2, and the linear guide rail 5 is fixed to the frame of the limiting mechanism by bolts.

[0031] The cylinder body of the transverse cylinder 4 is fixed to the frame of the limiting mechanism via a mounting base. Its drive shaft is connected to the slider or transmission component of the linear guide rail 5, enabling the transverse cylinder 4 to effectively drive the linear guide rail 5 to reciprocate horizontally during extension and retraction. Flow regulating valves are installed at the air inlet and outlet of the transverse cylinder 4. By adjusting the gas flow rate, the extension and retraction speed of the transverse cylinder 4 can be precisely controlled, thereby controlling the speed at which the limiting block 6 approaches the workpiece and preventing impact on the workpiece due to excessive speed.

[0032] The limiting block 6 is made of a material with a certain degree of elasticity, and its shape is customized according to the shape of the contact part of the workpiece. The limiting block 6 can be flat or arc-shaped to ensure good contact with the workpiece surface, increase the contact area, and more stably achieve the limiting function. At the connection between the limiting block 6 and the linear guide rail 5, a structure is provided for easy disassembly and replacement, such as by threaded connection or slot engagement. When the limiting block 6 is worn, it can be easily replaced to ensure the continuous effectiveness of the limiting function.

[0033] By adopting the above technical solution, the problem of workpiece movement is avoided by using the limit block 6 for limiting, and the whole process only requires one person to operate, which greatly saves labor costs. In addition, the cylinder moves quickly, which greatly improves efficiency compared with manual limiting.

[0034] Example 2: Reference Figure 2 and Figure 3 In one feasible embodiment, a guide block 22 is provided on the top of the mounting plate 2. The guide block 22 has a guide groove 221 that runs horizontally through it. The linear guide rail 5 passes through and extends out of the guide groove 221 and is guided by the guide groove 221.

[0035] In this embodiment, the guide block 22 is made of metal to maintain its shape accuracy and stably perform its guiding function during long-term use. Its overall shape can be a cuboid block structure, which is fixedly installed at a suitable position near the top of the mounting plate 2 by welding or bolting to ensure the connection is firm and that it will not loosen or shift when subjected to the force of the linear guide rail 5.

[0036] The inner wall of the guide groove 221 is polished to reduce the friction of the linear guide rail 5 during its passage and movement, and to prevent wear on the guide rail due to surface roughness. The openings at both ends of the through hole are rounded to prevent collisions or scratches between the linear guide rail 5 and the opening edges during reciprocating movement, thus ensuring smooth movement of the guide rail.

[0037] In one feasible embodiment, when the transverse cylinder 4 drives the linear guide 5 to move in the horizontal direction, the guide groove 221 continuously guides the linear guide 5, limiting its displacement in directions other than the horizontal direction.

[0038] Example 3: Continue to refer to Figure 3In one feasible embodiment, the transverse cylinder 4 is disposed on the side of the mounting plate 2 facing away from the worktable 8. The transverse cylinder 4 includes a guide rod 41 disposed in the horizontal direction. One end of the guide rod 41 is connected to the drive shaft of the transverse cylinder 4, and the other end is connected to the linear guide rail 5 through the connector 7 to drive the linear guide rail 5 to move.

[0039] In this embodiment, the transverse cylinder 4 is located on the side of the mounting plate 2 facing away from the worktable 8, and is fastened by welding or high-strength bolts to ensure that the cylinder will not loosen or shift during operation.

[0040] The drive shaft of the transverse cylinder 4 is threaded at one end, and the guide rod 41 is also threaded with a matching internal thread at one end. The drive shaft and the guide rod 41 are tightly connected by the threaded connection, and an anti-loosening nut is installed at the connection. After tightening, it can effectively prevent the connection from loosening due to vibration or other reasons during repeated movement, ensuring the stability of the connection between the two, so that the drive shaft can stably drive the guide rod 41 to move synchronously.

[0041] The guide rod 41 is made of metal and is shaped like a slender cylinder. Its surface is finely polished to ensure it is smooth and burr-free, so as to reduce friction during movement.

[0042] The connector 7 is a specially designed metal connecting block. One side of it has a mounting hole adapted to the guide rod 41. It is fitted to the guide rod 41 via an interference fit or by inserting a bushing into the mounting hole, and then further secured with a locating pin or set screw to prevent rotation or axial displacement of the guide rod 41 relative to the connector 7. The other side of the connector 7 is fixed to the slider or a specific connecting part of the linear guide rail 5 through welding, bolting, or a slotted fit, thereby accurately transmitting the movement of the guide rod 41 to the linear guide rail 5, driving the linear guide rail 5 to reciprocate horizontally.

[0043] When the transverse cylinder 4 starts working after being vented, the drive shaft extends and retracts. Because it is firmly connected to the guide rod 41, the extension and retraction of the drive shaft directly drives the guide rod 41 to move linearly in the horizontal direction. The guide rod 41 then transmits this movement to the linear guide rail 5 through the connector 7, so that the linear guide rail 5 can move smoothly and accurately back and forth in the horizontal direction under the drive of the guide rod 41.

[0044] Example 4: Reference Figure 1 and Figure 2 In one feasible embodiment, the support part 1 is a plate-shaped support plate, and a slot is provided at the connection between the workbench 8 and the support part 1. The mounting plate 2 is disposed in the slot and can move back and forth in the vertical direction within the slot.

[0045] In this embodiment, the support part 1 is made of metal plate, and its shape is designed as a suitable plate shape, such as a rectangular plate structure, according to the actual layout of the workbench 8 and the overall stress of the limiting device. The edges of the support part 1 are rounded to avoid safety hazards such as personnel injury caused by sharp edges, and to reduce stress concentration and improve the overall durability of the support part 1.

[0046] Multiple evenly distributed mounting holes are pre-machined on the support part 1 corresponding to the connection point of the worktable 8. The diameter of these mounting holes matches the size of the bolts used for connection. The dimensional accuracy of the slot opened at the connection between the worktable 8 and the support part 1 must be strictly controlled. The length of the slot is along the vertical direction, and the width is slightly larger than the thickness of the mounting plate 2 to ensure that the mounting plate 2 can move smoothly within the slot. By passing high-strength bolts through the mounting holes of the support part 1 and screwing them into the corresponding bolt holes of the worktable 8, and tightening the bolts with appropriate torque, a tight and stable fixed connection is achieved between the support part 1 and the worktable 8, ensuring that the entire support part 1 will not loosen or shift relative to the worktable 8 during the operation of the device.

[0047] The grooving is performed on the workbench 8 using a cutting process to ensure the flatness of the inner wall of the groove and its straightness in the vertical direction. The inner wall of the groove is ground to reduce its surface roughness, which reduces the friction experienced by the mounting plate 2 when it moves back and forth within the groove, preventing it from moving poorly or wearing out too quickly due to excessive friction. Simultaneously, the ends of the groove are appropriately flared to form small chamfers or rounded transitions, preventing the mounting plate 2 from violently colliding with the groove ends when it reaches its extreme position, thus providing a certain degree of buffering protection.

[0048] The dimensions of mounting plate 2 are determined by the size of the slot; its thickness is less than the width of the slot, and its length and width ensure sufficient room for movement within the slot without interference. The bottom and sides of mounting plate 2 are flush with the inner wall of the slot.

[0049] In one feasible embodiment, reinforcing ribs are distributed on key stress-bearing parts such as the top of the mounting plate 2. Triangular or trapezoidal metal ribs are fixed to the mounting plate 2 by welding or other methods to enhance the strength of the mounting plate 2 and prevent deformation during long-term reciprocating movement and bearing the weight and force of components such as the limiting mechanism.

[0050] Example 5: In one feasible embodiment, a displacement sensor is also provided on the mounting plate 2, located at the top of the mounting plate 2 and at the same height in the vertical direction as the linear guide rail 5. The displacement sensor is used to detect the vertical displacement height of the mounting plate 2. A pressure sensor is also included on the contact surface between the limiting block 6 and the workpiece. The pressure sensor is used to detect the contact pressure when the limiting block 6 contacts the workpiece on the worktable 8. When the pressure sensor detects that the contact pressure exceeds the pressure threshold, the pressure sensor is triggered, and the transverse cylinder 4 stops moving the linear guide rail 5.

[0051] In this embodiment, the base of the displacement sensor has mounting holes, and the displacement sensor is fixed to the mounting surface at the top of the mounting plate 2 using bolts.

[0052] The displacement sensor connects to an external control unit, such as a programmable logic controller (PLC), via its built-in signal cable. The signal cable is shielded to reduce the impact of external electromagnetic interference on signal transmission. Sealing and securing measures are taken at the connection points to prevent loosening or poor contact due to prolonged use.

[0053] When mounting plate 2 moves vertically, the displacement sensor collects displacement height data in real time and converts it into a corresponding electrical signal, which is then transmitted to the control unit via a signal line. The control unit has a built-in algorithm program that analyzes and processes the received signal. On one hand, it can display the displacement height value on a human-machine interface such as a touch screen for easy viewing by operators. On the other hand, it can make judgments based on preset displacement range parameters. If the displacement exceeds the normal range, the control unit can promptly issue an alarm signal to remind staff to check and adjust the device.

[0054] The external dimensions of the pressure sensor are adapted to the structural characteristics of the limiting block 6. An installation groove that matches the shape of the pressure sensor is pre-machined inside the limiting block 6. The depth and shape of the groove ensure that the pressure sensor is fully embedded and that its sensing surface is on the same plane as the contact surface between the limiting block 6 and the workpiece after installation, thus ensuring that it can sense the contact pressure.

[0055] When the limit block 6 comes into contact with the workpiece on the worktable 8, the pressure sensor monitors the contact pressure in real time and converts the pressure signal into an electrical signal, which is then transmitted to the control unit. Once the pressure value corresponding to the pressure sensor signal received by the control unit exceeds the set pressure threshold, the control unit immediately sends a stop signal to the control circuit of the transverse cylinder 4, causing the transverse cylinder 4 to stop moving the linear guide rail 5. This prevents damage to the workpiece due to excessive compression and also protects the relevant components of the entire limit device, extending its service life.

[0056] Example 6: Continue to refer to Figure 2In one feasible embodiment, the support part 1 has a guide groove 11 in the vertical direction, and the mounting plate 2 has a slide rail 21 corresponding to the guide groove 11. The slide rail 21 is slidably installed in the guide groove 11 and guided by the guide groove 11.

[0057] In this embodiment, the guide groove 11 is formed on the support part 1, and its length extends vertically to accommodate the subsequent movement requirements of the support part 1 in this direction. The guide groove 11 is designed as a rectangular groove, and its width is matched with the size of the slide rail 21 on the mounting plate 2 to ensure that there is a suitable gap between the two. This allows the mounting plate 2 to slide smoothly in the guide groove 11 via the slide rail 21, and also effectively guides the mounting plate 2 to avoid excessive shaking or offset.

[0058] The edges of the guide groove 11 are rounded or beveled to prevent the slide rail 21 from rubbing against the edge of the guide groove 11 during the installation and movement of the mounting plate 2, which would affect the normal operation and service life of the device.

[0059] The depth of the guide groove 11 is related to the thickness of the support part 1 and the force that the entire device bears during operation. In order to ensure the strength of the guide groove 11 itself, a reinforcing rib structure is added to the periphery of the support part 1 corresponding to the guide groove 11. The reinforcing rib is connected to the main body of the support part 1 by welding or other means to enhance the ability of this part to withstand lateral forces and ensure that the guide groove 11 will not affect its guiding function due to deformation under force during long-term use.

[0060] The slide rail 21 on the mounting plate 2 is made of metal. The slide rail 21 is a long, narrow boss structure. Its cross-sectional shape matches the cross-sectional shape of the guide groove 11, and is generally rectangular. The surface of the slide rail 21 is polished to reduce surface roughness, thereby reducing the friction between it and the inner wall of the guide groove 11, making the movement of the mounting plate 2 in the guide groove 11 smoother.

[0061] On both sides of the slide rail 21, small chamfers or rounded corners can be provided to further prevent jamming during movement in conjunction with the guide groove 11, and also to reduce wear caused by local stress concentration.

[0062] In one feasible embodiment, the mounting plate 2 is installed into the guide groove 11 of the support part 1 via a slide rail 21, ensuring that the slide rail 21 can be smoothly aligned with the guide groove 11 and fully embedded. During actual operation, when the height lifting cylinder 3 drives the mounting plate 2 and other components such as the limiting mechanism to move, the mounting plate 2, through the cooperation of the slide rail 21 and the guide groove 11 of the support part 1, can effectively limit the displacement of the mounting plate 2 in directions other than the vertical direction, ensuring that the movement trajectory of the entire device remains straight along the vertical direction.

[0063] Example 7: Reference Figure 3 In one feasible embodiment, the system also includes a wiring harness sheath 9, which is a chain-type sheath used to bundle and organize the air pipes and wiring harnesses of the height lifting cylinder 3 and the lateral cylinder 4.

[0064] In this embodiment, the chain-type wire harness sheath 9 is composed of multiple chain links connected by a flexibly rotating link structure. This chain-like structure provides excellent flexibility, allowing it to bend in any direction, thus meeting the layout requirements of the air tube and wire harness in different installation positions and movement states. Each chain link is injection molded from engineering plastics such as nylon, ensuring its own strength and preventing easy damage or deformation during long-term use. It can withstand the weight of the air tube and wire harness, as well as the pulling and bending forces generated during device operation.

[0065] Based on the actual situation of the total number and thickness of the air pipes and wiring harnesses of the lifting cylinder 3 and the lateral cylinder 4, a suitable specification of chain-type wiring harness sheath 9 is selected. The sheath has a large inner diameter to ensure that all air pipes and wiring harnesses can be easily accommodated. During the selection process, a certain margin is reserved to facilitate the accommodation of any small number of air pipes or wiring harnesses that may be added later. The margin is controlled within a reasonable range to avoid affecting the overall neatness of the sheath.

[0066] On the support part 1 and mounting plate 2 and other related components, mounting points for fixing the wire harness sheath 9 are pre-planned and machined, and threaded holes are drilled or small fixing clips are welded at appropriate positions. One end of the chain-type wire harness sheath 9 is firmly fixed to the starting position near the cylinder body of the height lifting cylinder 3 by means of bolts, buckles, etc., and the sheath is gradually extended and fixed along the direction of the air pipe and wire harness to ensure that it can cover the main distribution path of the air pipe and wire harness, and is reliably fixed to the position of the transverse cylinder 4, so that the sheath is tightly integrated with the overall structure of the device and will not loosen or shift due to the movement of the device.

[0067] Example 8: In one feasible embodiment, a fixing claw is also included, hinged to both ends of the limiting block 6. The fixing claw is used to clamp the workpiece on both sides after the limiting block 6 abuts against the workpiece on the worktable 8, thereby limiting the workpiece.

[0068] In this embodiment, the fixing claw is made of metal to ensure it can withstand certain external forces and will not easily deform or be damaged during workpiece clamping. Its shape can be designed to resemble a hook, with one end connected to the limiting block 6 via a hinge structure, and the other end being a free end. The inner side of the free end is provided with anti-slip textures or a serrated structure, which increases friction when in contact with the workpiece, thus clamping it more securely. The main body of the fixing claw is made as thin as possible while ensuring strength to reduce its own weight and avoid causing excessive unnecessary obstruction or interference to the workpiece.

[0069] Symmetrical mounting holes are pre-machined at both ends of the limiting block 6 for mounting the hinge shaft. The fixing claw is fitted onto the hinge shaft through the corresponding mounting holes to achieve a hinged connection with the limiting block 6. When the limiting block 6 abuts against the workpiece on the worktable 8, as the transverse cylinder 4 continues to apply a certain thrust pressure without exceeding the set threshold, the fixing claw will rotate around the hinge shaft under the combined action of the thrust and the workpiece reaction force, gradually approaching both sides of the workpiece and finally clamping it against both sides of the workpiece.

[0070] Example 9: The present invention also discloses a workpiece processing device, which includes a worktable, and workpiece limiting devices as described above are respectively provided at both ends of the worktable, with the two workpiece limiting devices arranged opposite to each other on the worktable.

[0071] In this embodiment, the worktable is made of cast iron and is usually designed to be rectangular. Its size is determined according to the actual size of the workpiece and the processing requirements. It is necessary to ensure that there is enough space to place the workpiece and accommodate the workpiece limiting devices set at both ends, while avoiding the worktable being too large, which would result in wasted space and increased material costs.

[0072] Multiple mounting screw holes are pre-machined at both ends of the worktable, corresponding to the mounting holes on the support part 1 of the workpiece limiting device. The support part 1 of the workpiece limiting device is then firmly fixed to the worktable by using bolts.

[0073] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A workpiece limiting device for limiting a workpiece on a worktable (8), comprising a support (1) fixedly installed on one side of the worktable (8), wherein a height lifting cylinder (3) is provided on the support (1), characterized in that, It also includes: mounting plate (2) and limiting mechanism; The mounting plate (2) is connected to the drive shaft of the height lifting cylinder (3) and is used to reciprocate in the vertical direction under the drive of the height lifting cylinder (3); The limiting mechanism is mounted on the mounting plate (2). The limiting mechanism includes a transverse cylinder (4) and a linear guide rail (5) driven by the transverse cylinder (4) to move in the horizontal direction. A limiting block (6) is provided on the linear guide rail (5). When the linear guide rail (5) moves toward the worktable (8), the limiting block (6) abuts against the workpiece on the worktable (8). The horizontal direction is the direction of movement toward the worktable (8).

2. The workpiece limiting device as described in claim 1, characterized in that, The mounting plate (2) is provided with a guide block (22) on the top. The guide block (22) has a guide groove (221) that runs through the horizontal direction. The linear guide rail (5) passes through and extends out of the guide groove (221) and is guided by the guide groove (221).

3. The workpiece limiting device as described in claim 1, characterized in that, The transverse cylinder (4) is disposed on the side of the mounting plate (2) facing away from the worktable (8). The transverse cylinder (4) includes a guide rod (41) disposed along the horizontal direction. One end of the guide rod (41) is connected to the drive shaft of the transverse cylinder (4), and the other end is connected to the linear guide rail (5) through a connector (7) to drive the linear guide rail (5) to move.

4. The workpiece limiting device as described in claim 1, characterized in that, A slot is provided at the connection between the workbench (8) and the support (1), and the mounting plate (2) is disposed in the slot and can move in the vertical direction within the slot.

5. The workpiece limiting device as described in claim 1, characterized in that, The mounting plate (2) is also equipped with a displacement sensor, which is located at the top of the mounting plate (2) and at the same height as the linear guide rail (5) in the vertical direction, for detecting the displacement height of the mounting plate (2) in the vertical direction.

6. The workpiece limiting device as described in claim 1, characterized in that, A pressure sensor is provided on the contact surface between the limiting block (6) and the workpiece to detect the contact pressure when the limiting block (6) contacts the workpiece on the worktable (8). When the contact pressure exceeds the pressure threshold, the pressure sensor is triggered and the transverse cylinder (4) stops driving the linear guide (5) to move.

7. The workpiece limiting device as described in claim 1, characterized in that, The support part (1) has a guide groove (11) along the vertical direction, and the mounting plate (2) has a slide rail (21) corresponding to the guide groove (11). The slide rail (21) is slidably installed in the guide groove (11) and guided by the guide groove.

8. The workpiece limiting device as described in claim 1, characterized in that, The workpiece limiting device also includes a wire harness sheath (9), which is a chain sheath. The wire harness sheath (9) is used to bundle and organize the air pipes and wire harnesses of the height lifting cylinder (3) and the horizontal cylinder (4).

9. The workpiece limiting device as described in claim 1, characterized in that, The limiting block (6) is provided with fixing claws at both ends. The fixing claws are hinged to both ends of the limiting block (6). When the limiting block (6) abuts against the workpiece on the worktable (8), the fixing claws clamp the workpiece on both sides to limit the workpiece.

10. A workpiece processing apparatus, characterized in that, It includes a worktable, and two ends of the worktable are respectively provided with workpiece limiting devices as described in any one of claims 1-9, with the two workpiece limiting devices being disposed opposite to each other on the worktable.

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