Guide rail gap adjusting mechanism
Patent Information
- Application Number
- CN202522094646.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-09-29
AI Technical Summary
[0003]而国内机械压力机在做厚板的冲裁时，由于板材较厚，冲头会比冲裁薄板时更早接触板材，滑块因此更早受力，这样就会造成连杆压力角β增大，就会对压力机左右的中导轨就会产生更大的侧向分力，而普通的导轨调节机构是用平端紧定螺钉作导轨的顶出结构，在实际使用的过程中发现会造成只有局部的螺钉接触，不足以抵抗连杆在水平方向对中导轨产生的分力，就会造成部分零件出现微变形，从而造成冲床的局部侧向力刚度不够的问题
[0013]与现有技术相比，本实用新型的有益效果是：本实用新型使用时，中导轨通过多个螺钉垫圈组合A拉紧固定在机架上，机架对应位置的顶销经螺钉垫圈组合B固定，顶销对中导轨起顶紧作用，通过拉紧与顶紧二者协同，实现中导轨的间隙调节，增强侧向力刚度，顶销与中导轨的贯通过油孔相通，油脂顺利由接头经过油孔流入中导轨的摩擦副面，形成润滑油膜。
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Figure CN224827907U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, specifically to a guide rail clearance adjustment mechanism. Background Technology
[0002] Currently, most domestic mechanical presses adopt a crank-slider structure, and the crankshaft is mostly longitudinally placed. The crankshaft is eccentrically connected to the connecting rod, and the other end of the connecting rod is a ball joint structure that connects to the slider. The slider moves mostly in the vertical direction. When the press performs machining to punch the sheet metal, the connecting rod will produce a certain angle with the vertical direction of the slider's movement, which we call the connecting rod pressure angle β.
[0003] When domestic mechanical presses are used for punching thick plates, the punch contacts the plate earlier than when punching thin plates due to the thickness of the plate. As a result, the slide is stressed earlier, which increases the pressure angle β of the connecting rod. This leads to a greater lateral force on the left and right guide rails of the press. Ordinary guide rail adjustment mechanisms use flat-end set screws as the ejection structure of the guide rails. In actual use, it has been found that this results in only local screw contact, which is insufficient to resist the horizontal force generated by the connecting rod on the guide rails. This causes slight deformation of some parts, resulting in insufficient local lateral stiffness of the press.
[0004] In addition, because the connecting rod generates a larger lateral force in the horizontal direction, the slider will generate a larger surface pressure on the central guide rail when it moves. Conventional single-point lubrication may sometimes fail to form an effective oil film between the friction pair of the central guide rail and the slider, resulting in heat generation on the friction pair surface during slider operation. In severe cases, it may even cause the machine to burn out and eventually fail. Utility Model Content
[0005] This utility model aims to solve at least one of the technical problems existing in the prior art.
[0006] Therefore, one objective of this utility model is to provide a guide rail gap adjustment mechanism. This guide rail gap adjustment mechanism can use multiple screws and washers combined A to tighten the middle guide rail fixed on the frame, and the top pin plays a pressing role on the middle guide rail. Through the synergy of tightening and pressing, the gap of the middle guide rail can be adjusted, thereby enhancing the lateral stiffness.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a guide rail gap adjustment mechanism, including a frame, a rear guide rail installed on the rear side of the frame, a front guide rail installed on the front side of the frame, and middle guide rails installed on both sides of the frame. The middle guide rails are tightened and fixed to the frame by a combination of multiple screws and washers (A). The frame is also equipped with multiple top pins corresponding to the positions of the middle guide rails. The top pins are flange structures, and the ends of the top pins are used to press against the middle guide rails. The front guide rail, rear guide rail, and middle guide rails enclose each other to form a closed six-sided area, and a slider is slidably installed in the six-sided area.
[0008] Preferably, a sealing groove is provided on the end face of the top pin that is pressed against the middle guide rail, and an O-ring is fitted in the sealing groove.
[0009] Preferably, the middle guide rail and the top pin are provided with through oil passage holes.
[0010] Preferably, the top pins are spaced apart along the length of the central guide rail.
[0011] Preferably, the flange of the top pin is symmetrically fixed to the frame by a combination of four screws and washers (B).
[0012] Preferably, the top pin has a thread on its end face away from the middle guide rail and located at the opening of the oil passage hole.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When this utility model is used, the middle guide rail is tightened and fixed to the frame by a combination of multiple screws and washers A, and the top pin at the corresponding position of the frame is fixed by a combination of screws and washers B. The top pin plays a tightening role on the middle guide rail. Through the synergy of tightening and tightening, the gap of the middle guide rail can be adjusted, and the lateral stiffness can be enhanced. The top pin and the middle guide rail are connected by a through oil hole, and the grease flows smoothly from the joint through the oil hole into the friction pair surface of the middle guide rail to form a lubricating oil film. Attached Figure Description
[0014] Figure 1 This is a top cross-sectional view of the guide rail clearance adjustment mechanism according to an embodiment of the present utility model. Figure 2 This is an embodiment of the present utility model. Figure 1 A magnified structural diagram of part A in the middle.
[0015] In the diagram: 1. Frame; 2. Rear guide rail; 3. Front guide rail; 4. Middle guide rail; 5. Screw and washer assembly A; 6. Top pin; 7. Screw and washer assembly B; 8. O-ring; 9. Slider; 10. Oil passage hole. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1 An embodiment of this utility model provides a guide rail gap adjustment mechanism, including: a frame 1.
[0018] Among them, such as Figures 1-2 As shown, a rear guide rail 2 is installed on the rear side of the frame 1, a front guide rail 3 is installed on the front side of the frame 1, and middle guide rails 4 are installed on both sides of the frame 1. The middle guide rails 4 are tightened and fixed to the frame 1 by a combination of multiple screws and washers A5. The frame 1 is also equipped with multiple top pins 6 at the positions corresponding to the middle guide rails 4. The top pins 6 are flange structures and the ends of the top pins 6 are used to tighten the middle guide rails 4.
[0019] In use, the front guide rail 3, the rear guide rail 2, and the middle guide rail 4 enclose each other to form a closed six-sided area, and the slider 9 is slidably installed in the six-sided area. When the gap of the middle guide rail 4 is adjusted, the middle guide rail 4 is tightened and fixed to the frame 1 by a combination of multiple screws and washers A5. The top pin 6 at the corresponding position of the frame 1 is fixed by a combination of screws and washers B7. The top pin 6 plays a pressing role on the middle guide rail 4. Through the synergy of tightening and pressing, the gap of the middle guide rail 4 can be adjusted, and the lateral stiffness can be enhanced.
[0020] Furthermore, refer to Figure 2 The top pins 6 are spaced apart along the length of the middle guide rail 4, so that the clamping force is evenly applied to the entire length of the middle guide rail 4. This avoids bending deformation of the middle guide rail 4 due to uneven force caused by single-point or local clamping. Together with the tensioning force of the screw and washer combination A5, the gap between the middle guide rail 4 and the slider 9 can be evenly adjusted, ensuring that the slider 9 is subjected to stable force during sliding and avoiding jamming or displacement.
[0021] In addition, the flange of the top pin 6 is symmetrically fixed to the frame 1 by a combination of four screws and washers B7. The combination of screws and washers B7 can evenly fix the flange of the top pin 6 to the frame 1, so that the flange is subjected to symmetrical force and prevent the top pin 6 from tilting during the fixing process.
[0022] In this embodiment, as Figure 2As shown, a sealing groove is provided on the end face where the top pin 6 and the middle guide rail 4 are pressed together. An O-ring 8 is installed in the sealing groove. The sealing groove plays a role in positioning and fixing the O-ring 8. The O-ring 8 uses its own elastic deformation to tightly fit the contact surface between the top pin 6 and the middle guide rail 4, which can effectively seal the gap between the two and prevent the lubricating grease in the oil hole 10 from leaking from the pressing part, ensuring that all the grease flows to the friction pair surface between the middle guide rail 4 and the slider 9.
[0023] Furthermore, the top pin 6 has a thread on its end face away from the middle guide rail 4 and located at the opening of the oil passage hole 10. The thread at the opening of the oil passage hole 10 can be used to connect external oil supply components (such as oil nozzles, oil pipe joints, etc.), so as to realize the detachable connection between the oil supply device and the oil passage hole 10, and facilitate the connection or disconnection of the oil supply equipment as needed.
[0024] like Figure 2 As shown, the middle guide rail 4 and the top pin 6 are provided with through oil holes 10. After the top pin 6 and the middle guide rail 4 are pressed together, the through oil holes 10 form a continuous oil supply channel, which facilitates the introduction of lubricating grease from the outside through the oil holes 10 of the top pin 6 into the oil holes 10 of the middle guide rail 4, and delivers it to the friction pair surface between the middle guide rail 4 and the slider 9 to form an effective lubricating oil film.
[0025] Based on the above technical solution, the working steps of this solution are summarized as follows: In use, the rear guide rail 2 on the rear side of the frame 1, the front guide rail 3 on the front side, and the middle guide rails 4 on both sides form a closed six-sided area, which provides guidance for the up and down movement of the slider 9. When the gap of the middle guide rail 4 is adjusted, the middle guide rail 4 is tightened and fixed to the frame 1 by multiple screw washers combination A5. The top pin 6 at the corresponding position of the frame 1 is fixed by screw washers combination B7, and the top pin 6 plays a pressing role on the middle guide rail 4. Through the synergy of tightening and pressing, the gap of the middle guide rail 4 is adjusted, and the lateral stiffness is enhanced.
[0026] In addition, the top pin 6 is connected to the through oil hole 10 of the middle guide rail 4, and an O-ring 8 is installed on the end face of the top pin 6 and the middle guide rail 4 that are pressed together, so as to ensure that the grease flows smoothly from the joint through the oil hole 10 into the friction pair surface of the middle guide rail 4, thereby enabling multi-point lubrication of the middle guide rail 4 and forming an effective lubricating oil film.
[0027] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A guide rail clearance adjustment mechanism, characterized in that, Including rack (1): The rear guide rail (2) is installed on the rear side of the frame (1), the front guide rail (3) is installed on the front side of the frame (1), and the middle guide rail (4) is installed on both sides of the frame (1). The middle guide rail (4) is tightened and fixed to the frame (1) by a combination of multiple screw washers A (5). The frame (1) is also equipped with multiple top pins (6) at the position corresponding to the middle guide rail (4). The top pin (6) is a flange structure and the end of the top pin (6) is used to press against the middle guide rail (4). The front guide rail (3), the rear guide rail (2) and the middle guide rail (4) enclose each other to form a closed six-sided area, and the six-sided area is slidably installed with a slider (9).
2. The guide rail clearance adjustment mechanism according to claim 1, characterized in that: A sealing groove is provided on the end face of the top pin (6) that is pressed against the middle guide rail (4), and an O-ring (8) is installed in the sealing groove.
3. The guide rail clearance adjustment mechanism according to claim 1, characterized in that: The middle guide rail (4) and the top pin (6) are provided with through oil holes (10).
4. The guide rail clearance adjustment mechanism according to claim 2, characterized in that: The top pins (6) are spaced apart along the length of the middle guide rail (4).
5. The guide rail clearance adjustment mechanism according to claim 1, characterized in that: The flange of the top pin (6) is symmetrically fixed to the frame (1) by a combination of four screws and washers B (7).
6. The guide rail clearance adjustment mechanism according to claim 3, characterized in that: The top pin (6) is threaded at the end face away from the middle guide rail (4) and at the opening of the oil passage hole (10).