A punch accessory machining guide rail bending resistance drilling equipment

Abstract

The present application relates to punch accessory processing field, specifically is related to a punch accessory processing is with the guide rail bending resistance drilling equipment. Including frame, the frame is equipped with conveying mechanism and drilling mechanism, the frame is equipped with the position of bending resistance mechanism corresponding drilling mechanism, the bending resistance mechanism includes the support plate and the lifting plate, the support plate is fixedly arranged on the support and is located directly below the drilling mechanism, the lifting plate is movably arranged on the support and is located directly above the support plate, the lifting plate bottom is equipped with two vertical downward extending limit plates, the transverse limiting gap is formed between the two limit plates, the limit roller is rotatably arranged on each limit plate along the guide rail conveying direction, the vertical limiting gap is formed between the limit roller and the support plate. The present application forms vertical limiting through the limit roller and the support plate, two limit plates form horizontal limiting, cooperate with the lining plate to fit the guide rail, realize internal and external collaborative adaptive limiting, continuously inhibit the guide rail warping, improve the drilling precision.

Description

Technical Field

[0001] This invention relates to the field of punch press parts processing, specifically to a guide rail anti-bending drilling device for punch press parts processing. Background Technology

[0002] Drilling is a crucial step in the production and processing of guide rails, ensuring their secure installation. Since guide rails are typically five meters long in their initial machining stage, and are characterized by a high slenderness ratio and low rigidity, insufficient support during the feeding process of the drilling equipment can easily cause the front end to warp or the entire rail to bend and deform, affecting machining accuracy and even causing equipment jamming. Current technology generally uses an extended feeding platform to support the guide rail throughout the entire process to prevent warping. However, this solution significantly increases the overall length of the drilling equipment, not only substantially increasing manufacturing costs but also occupying a large amount of production space.

[0003] A currently published Chinese patent authorization announcement number CN110802249B discloses an anti-tilting drilling device for guide rail production, comprising a processing table, a horizontally arranged feeding track on the processing table, take-up and release components at both ends of the processing table, an anti-tilting component above the feeding track, the anti-tilting component including an anti-tilting guide component capable of contacting the top of the guide rail, a horizontal moving component above the anti-tilting component, a driving clamping component capable of clamping the inside of the guide component at the working end of the horizontal moving component, drilling components on both sides of the feeding track, a horizontal stepping component below each drilling machine, the working end of each horizontal stepping component being fixedly connected to the inside of the drilling component, each drilling component including a drilling machine, the working end of each drilling machine being capable of extending into the inside of the feeding track, rectangular cuts for each drilling machine to pass through on both sides of the feeding track, and a rectangular through-hole for each drilling machine to pass through on the processing table.

[0004] According to the aforementioned patent, the patent achieves dynamic clamping and following limit of the warping end during the guide rail feeding process through liftable abutment rollers and synchronously moving actuating plates and sliding blocks. Combined with the screw-driven clamping mechanism and the flipping actuating plate, it achieves end warping prevention and stable material discharge, effectively preventing warping during the processing of long guide rails.

[0005] However, the sliding block relies on the end of the guide rail to follow the direction of movement, and there is a gap in the anti-tilting process during the initial feeding stage, which may cause the front end to tilt slightly upwards. Although a dynamic clamping mechanism is set up, local instability occurs in the processing area during each adjustment, affecting the accuracy of subsequent positioning and drilling. Therefore, there is a need for an anti-bending drilling device that can continuously maintain the overall stability of the guide rail during the feeding process. Summary of the Invention

[0006] To address the problems existing in the prior art, a guide rail anti-bending drilling device for punch press parts processing is provided. The device uses a limiting roller and a support plate to form a vertical limit, and two limiting plates to form a horizontal limit. With the inner liner plate fitting the guide rail, it achieves internal and external coordinated adaptive limiting, continuously suppressing guide rail warping and improving drilling accuracy.

[0007] To address the problems of existing technologies, this invention provides a guide rail anti-bending drilling device for punch press parts processing, comprising a frame, a conveying mechanism and a drilling mechanism disposed at the front end along the conveying direction of the frame, and an anti-bending mechanism disposed on the frame corresponding to the position of the drilling mechanism. The anti-bending mechanism includes a support plate and a lifting plate. The support plate is fixedly disposed on the bracket and located directly below the drilling mechanism, and the lifting plate is movably disposed on the bracket and located directly above the support plate. The lifting plate can move up and down relative to the support plate. Through holes matching the drilling points are coaxially opened on the surfaces of the support plate and the lifting plate. Two vertically downward extending limiting plates are symmetrically disposed at the bottom of the lifting plate, forming a transverse limiting gap between the two limiting plates. Each limiting plate is rotatably disposed with a limiting roller along the conveying direction of the guide rail, forming a vertical limiting gap between the limiting roller and the support plate.

[0008] Preferably, the anti-bending mechanism further includes an inner liner assembly disposed between the two limiting plates. The bottom of the lifting plate is provided with a guide sleeve for the drilling mechanism to pass through the through hole. The inner liner assembly includes inner liner plates symmetrically disposed on both sides of the guide sleeve. The inner liner plates are fitted to the inner side of the guide rail to form a sliding fit.

[0009] Preferably, the inner liner is a thin plate structure capable of elastic deformation, and the inner liner assembly further includes a drive element for driving the two inner liners to adaptively conform to the inner contour of the guide rail.

[0010] Preferably, one end of the inner liner is fixedly connected to the lower end of the guide sleeve, and the other end extends outward. The lower end of the guide sleeve is provided with a support for fixing the two inner liners. When the two inner liners deform under the action of the driving member, the inner liners are in an outward deformation state with the support as the fulcrum.

[0011] Preferably, the driving component is a ring-shaped closed airbag, which is fitted on the lower half of the guide sleeve. An internal cavity for accommodating the airbag is formed between the two inner lining plates. The airbag is provided with an inflation port that communicates with the outside. When the airbag is inflated, the two inner lining plates are in a state of synchronous deformation, so that the inner lining plates are tightly attached to the inner wall of the guide rail.

[0012] Preferably, each limiting plate has an elastic buffer pad on its inner side that fits against the outer surface of the guide rail. When the guide rail enters the drilling station and is clamped, the guide rail is in an adaptive centering state between the two elastic buffer pads.

[0013] Preferably, the drilling mechanism is provided with the limiting rollers at both the front and rear ends along the conveying direction of the guide rail. Each limiting roller is made of metal. When the guide rail enters the drilling station and is clamped, the guide rail is in a limited and unpressurized state between the limiting roller and the support plate.

[0014] Preferably, a channel is formed between the guide sleeve and the two through holes. The lower half of the guide sleeve is provided with an air inlet communicating with the airbag, and the upper half of the guide sleeve is provided with an air outlet communicating with the outside. When the airbag is inflated, some airflow continuously enters the channel, forming a cooling airflow from bottom to top.

[0015] Preferably, the drilling mechanism includes a drill rod coaxially disposed in the channel, and the drill rod and the channel are clearance-fitted.

[0016] Preferably, the conveying mechanism includes a rubber roller disposed at the front end of the drilling mechanism and a roller disposed at the rear end. Two rubber rollers are symmetrically arranged on the frame along the height direction of the guide rail to form an upper and lower clamping drive structure. Multiple rollers are evenly distributed on the frame along the conveying direction of the guide rail to form a continuous horizontal support structure.

[0017] The advantages of this application compared to the prior art are:

[0018] 1. This invention utilizes an anti-bending mechanism consisting of a support plate and a lifting plate, combined with upper and lower clamping rollers and continuously supporting rollers, to achieve stable conveying and anti-warping protection throughout the entire guide rail feeding process. Before drilling, the guide rail is rigidly supported and dynamically clamped in tandem, and with the adaptive fit of the limiting rollers and elastic buffer pads, bending and vibration are effectively suppressed.

[0019] During drilling, the clearance fit between the drill rod and the channel ensures smooth drilling operation. At the same time, the cooling airflow flows from bottom to top along the outer wall of the drill rod to dissipate heat in time, reduce the impact of thermal deformation, and further improve the positioning accuracy and overall machining stability of long guide rail drilling.

[0020] 2. This invention controls the inner liner assembly through a driving component, utilizing the outward bending deformation of the inner liner plate with the guide sleeve support as the fulcrum to achieve adaptive fitting to the inner side of the guide rail. During drilling, it continuously provides internal support pressure, effectively compensating for guide rail dimensional tolerances and positional fluctuations, and suppressing lateral deformation and warping tendencies.

[0021] The inner liner plate and the inner wall of the guide rail form a sliding fit, which not only ensures smooth feed, but also realizes full-process inner guidance and dynamic limiting, enhances the bending stiffness of the machining area, and improves the positioning accuracy and overall stability of multi-hole continuous drilling.

[0022] 3. This invention uses an airbag to drive the synchronous deformation of two inner lining plates, achieving uniform fit and adaptive limiting of the inner side of the guide rail. It utilizes air pressure regulation to ensure stable contact pressure, effectively adapting to dimensional tolerances and enhancing lateral constraints.

[0023] Meanwhile, an elastic buffer pad is installed on the inner side of the limiting plate to provide flexible contact and centering guidance to the outer side of the guide rail. The elastic deformation compensates for width deviations and avoids damage caused by rigid compression. The synergistic effect of the inner and outer double elastic fit structure ensures smooth feed of the guide rail, improves centering and stability during clamping, and enhances the bending resistance and machining accuracy of the drilling area. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a guide rail anti-bending drilling device for punch press parts processing according to the present invention.

[0025] Figure 2 This is a partial three-dimensional cross-sectional view of a bending-resistant drilling device for a punch press parts processing guide rail according to the present invention. Figure 1 .

[0026] Figure 3 This is a partial planar sectional view of a guide rail anti-bending drilling device for punch press accessory processing according to the present invention.

[0027] Figure 4 This is a partial three-dimensional cross-sectional view of a bending-resistant drilling device for a punch press parts processing guide rail according to the present invention. Figure 2 .

[0028] Figure 5 This is a partial three-dimensional cross-sectional view of a bending-resistant drilling device for a punch press parts processing guide rail according to the present invention. Figure 3 .

[0029] Figure 6 This is a partial three-dimensional structural diagram of the guide rail and rollers of a punch press accessory processing guide rail anti-bending drilling device according to the present invention.

[0030] Figure 7 This is a partial three-dimensional structural diagram of the guide rail and anti-bending mechanism of a guide rail anti-bending drilling device for punch press parts processing according to the present invention. Figure 1 .

[0031] Figure 8 This is a partial three-dimensional structural diagram of the guide rail and anti-bending mechanism of a guide rail anti-bending drilling device for punch press parts processing according to the present invention. Figure 2 .

[0032] Figure 9 This is a partial planar sectional view of the guide rail and anti-bending mechanism of a guide rail anti-bending drilling device for punch press parts processing according to the present invention.

[0033] Figure 10 This is a partial three-dimensional structural cross-sectional view of the guide rail and anti-bending mechanism of a guide rail anti-bending drilling device for punch press parts processing according to the present invention.

[0034] The following are the labels in the diagram: 1. Frame; 11. Guide rod; 12. Sliding sleeve; 2. Drill rod; 3. Rubber roller; 4. Roller; 5. Guide rail; 6. Anti-bending mechanism; 61. Support plate; 62. Lifting plate; 621. Limiting plate; 6211. Elastic buffer pad; 622. Limiting roller; 63. Inner liner assembly; 631. Inner liner plate; 632. Airbag; 6321. Inflation port; 7. Guide sleeve; 71. Support part; 72. Air inlet; 73. Air outlet. Detailed Implementation

[0035] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0036] See Figures 1-8 As shown, a guide rail anti-bending drilling device for punch press parts processing includes a frame 1. The frame 1 is provided with a conveying mechanism and a drilling mechanism arranged at the front end along its conveying direction. An anti-bending mechanism 6 is provided on the frame 1 at the position corresponding to the drilling mechanism. The anti-bending mechanism 6 includes a support plate 61 and a lifting plate 62. The support plate 61 is fixedly arranged on the bracket and located directly below the drilling mechanism. The lifting plate 62 is movably arranged on the bracket and located directly above the support plate 61. The lifting plate 62 can move up and down relative to the support plate 61. Through holes matching the drilling points are coaxially opened on the surfaces of the support plate 61 and the lifting plate 62. Two vertically downward extending limiting plates 621 are symmetrically arranged at the bottom of the lifting plate 62. A transverse limiting gap is formed between the two limiting plates 621. Each limiting plate 621 is rotatably provided with a limiting roller 622 along the conveying direction of the guide rail 5. A vertical limiting gap is formed between the limiting roller 622 and the support plate 61.

[0037] A guide rod 11 is fixedly connected to each corner of the lifting plate 62 on the frame 1. A sliding sleeve 12 is provided on each guide rod 11 on the lifting plate 62. The driving source for driving the lifting plate 62 to move up and down is not shown in the figure.

[0038] When the guide rail 5 enters the conveying mechanism of the anti-bending drilling equipment for punch press parts processing and is conveyed forward to the drilling station, the anti-bending mechanism 6 is immediately activated to ensure that the guide rail 5 remains stable throughout the feeding process, effectively preventing bending and warping caused by its own weight or processing stress. First, the guide rail 5 gradually approaches the anti-bending area below the drilling mechanism under the push of the conveying mechanism. At this time, the lifting plate 62 is in its initial standby position, sliding along the guide rod 11. The precise fit between the sliding sleeve 12 and the guide rod 11 ensures the smooth vertical movement of the lifting plate 62, avoiding skewing. The transverse limiting gap formed between the two symmetrical limiting plates 621 at its bottom and the vertical limiting gap formed between the limiting roller 622 and the support plate 61 are all pre-set in place, providing precise spatial guidance for the entry of the guide rail 5.

[0039] As the front end of the guide rail 5 enters the area below the lifting plate 62, its bottom surface smoothly adheres to the surface of the fixed support plate 61, and its upper surface adheres to the limiting roller 622. The guide rail 5 is firmly clamped between the support plate 61 and the limiting roller 622, forming a bidirectional constraint. At the same time, the lateral limiting gaps formed by the limiting plates 621 on both sides constrain the lateral displacement of the guide rail 5. The support plate 61 provides continuous and rigid bottom support for the guide rail 5 throughout the drilling process, fundamentally avoiding sagging or local deformation caused by lack of support. The limiting roller 622 is arranged along the conveying direction of the guide rail 5, enabling rolling contact during the feeding process of the guide rail 5. This effectively suppresses the upward warping tendency of the guide rail 5 without hindering the continuous conveying of the guide rail 5.

[0040] During drilling operations, specific drilling points on the guide rail 5 are precisely aligned with the coaxial through holes on the support plate 61 and the lifting plate 62. This ensures that when the drill bit passes through the through holes to drill the guide rail 5, there is no vibration or displacement in the surrounding structure of the machining area, greatly improving the positioning accuracy and hole position consistency of the drilling.

[0041] After a drilling operation is completed, the conveying mechanism continues to advance the guide rail 5 to the next drilling point. The lifting plate 62 can maintain a constant pressing state as the guide rail 5 moves, ensuring that the guide rail 5 is always constrained during movement and pauses. Especially in the initial feeding stage, since the anti-bending mechanism 6 does not rely on the end of the guide rail 5 to push to activate the pressing action, but instead uses the independently driven lifting plate 62 to be in place in advance and actively press down, the anti-warping gap existing in the traditional structure is completely eliminated, realizing continuous anti-warping protection from the moment the guide rail 5 enters.

[0042] Throughout the entire anti-bending drilling process, the guide rail 5 always operates under the combined action of the rigid support of the support plate 61 and the dynamic pressing of the lifting plate 62, effectively resisting the elastic deformation and end warping that are prone to occur during the processing of the long guide rail 5, and ensuring high-precision and continuous drilling operations.

[0043] See Figures 1-5 As shown, the anti-bending mechanism 6 also includes an inner lining assembly 63 disposed between two limiting plates 621. The bottom of the lifting plate 62 is provided with a guide sleeve 7 for the drilling mechanism to pass through the through hole. The inner lining assembly 63 includes inner lining plates 631 symmetrically disposed on both sides of the guide sleeve 7. The inner lining plates 631 are attached to the inner side of the guide rail 5 to form a sliding fit.

[0044] When the guide rail 5 enters the drilling position of the anti-bending mechanism 6 during the conveying process, the lifting plate 62 moves down along the guide rod 11 under the driving action. The guide sleeve 7 set at its bottom provides a passage for the drill bit of the drilling mechanism to ensure that the drill bit is aligned with the through hole on the support plate 61 and the lifting plate 62.

[0045] When the lifting plate 62 is pressed down to the working position, the inner lining components 63 located on both sides of the guide sleeve 7 descend accordingly. The symmetrically arranged inner lining plates 631 are attached to the inner wall of the guide rail 5, forming a sliding fit with the guide rail 5, providing inner lateral support during the drilling process.

[0046] When the drilling mechanism performs drilling operations, as the drill bit passes through the guide sleeve 7 and the through hole into the guide rail 5, the inner liner plate 631 continuously adheres to the inner side of the guide rail 5, sliding synchronously with the feed of the guide rail 5, maintaining contact and limiting the inner wall of the guide rail 5. This adhesion is not rigidly fixed, but forms a precise sliding fit, allowing the guide rail 5 to move smoothly under the action of the conveying force, while effectively suppressing the slight twisting or lateral displacement of the guide rail 5 caused by local stress or the release of internal stress in the material. This achieves uninterrupted inner guidance and support throughout the entire process, ensuring the constant posture of the guide rail 5 during multi-hole continuous machining, and effectively avoiding hole spacing deviations caused by lateral instability.

[0047] See Figures 2-5 As shown, the inner liner 631 is a thin plate structure that can undergo elastic deformation. The inner liner assembly 63 also includes a drive component for driving the two inner liner plates 631 to adaptively conform to the inner contour of the guide rail 5.

[0048] When the guide rail 5 enters the drilling position of the anti-bending mechanism 6, the lifting plate 62 moves downward and drives the inner lining assembly 63 to approach the inner side of the guide rail 5. As a thin plate structure that can undergo elastic deformation, the inner lining plate 631 generates an inward preload under the action of the driving component.

[0049] When the two inner lining plates 631 contact the inner wall of the guide rail 5, the driving component pushes them to move laterally relative to each other, forcing the inner lining plates 631 to conform to the actual contour of the inner side of the guide rail 5, while using their own elastic deformation capability to adapt to the small size deviations or irregular shapes that exist on the inner side of the guide rail 5.

[0050] When the guide rail 5 experiences slight positional fluctuations during processing or when there are tolerances between different batches of guide rail 5, the driving component continues to operate, enabling the two inner lining plates 631 to adaptively adjust their contact pressure, ensuring effective contact with the inner side of the guide rail 5 at all times, and achieving dynamic contact limiting. When the guide rail 5 is subjected to external forces during feeding or drilling, it effectively suppresses torsion or lateral bending deformation caused by uneven local stress, preventing warping or vibration at the processing position. It also improves the bending stiffness of the guide rail 5 in the processing area, thereby ensuring the drilling accuracy of the guide rail 5.

[0051] See Figures 3-5 , Figure 9 and Figure 10As shown, one end of the inner liner 631 is fixedly connected to the lower end of the guide sleeve 7, and the other end extends outward. The lower end of the guide sleeve 7 is provided with a support part 71 for fixing the two inner liner plates 631. When the two inner liner plates 631 deform under the action of the driving member, the inner liner plates 631 are in an outward deformation state with the support part 71 as the fulcrum.

[0052] When the driving component applies an outward driving force to the two inner liner plates 631, the inner liner plates 631 use the support part 71 at the lower end of the guide sleeve 7 as a fixed fulcrum, and the other end of the inner liner plates 631 bends and deforms outward around the support part 71 under the action of external force, forming an outward deformation state, thereby increasing the distance between the two inner liner plates 631.

[0053] When the inner wall of the guide rail 5 enters between the two inner lining plates 631, the inner lining plates 631 begin to move. The outwardly bent inner lining plates 631 adhere to the inner side of the guide rail 5, using deformation force to achieve adaptive contact and limitation of the guide rail 5. This allows the inner lining plates 631 to dynamically adjust the contact pressure according to the actual size of the guide rail 5, ensuring that the inner lining plates 631 quickly adhere and continuously apply stable constraint force, enhancing the resistance to lateral deformation of the guide rail 5 and the possibility of vertical warping, thereby improving the overall bending stability.

[0054] See Figures 3-5 , Figure 9 and Figure 10 As shown, the driving component is specifically an annular closed airbag 632. The airbag 632 is sleeved on the lower half of the guide sleeve 7. An internal cavity for accommodating the airbag 632 is formed between the two inner lining plates 631. The airbag 632 is provided with an inflation port 6321 that communicates with the outside. When the airbag 632 is inflated, the two inner lining plates 631 are in a state of synchronous deformation, so that the inner lining plates 631 are tightly attached to the inner wall of the guide rail 5.

[0055] When the airbag 632 is connected to an external air source through the inflation port 6321 and begins to inflate, the annular closed airbag 632 gradually expands in the built-in cavity of the lower half of the guide sleeve 7, and its circumferential expansion deformation directly acts on the inner lining plates 631 on both sides.

[0056] As the airbag 632 continues to inflate, the uniform pressure applied to the inner sides of the two inner lining plates 631 causes them to undergo synchronous outward elastic deformation. The inner lining plates 631 expand outward with the support portion 71 at the lower end of the guide sleeve 7 as the fulcrum, thereby increasing the distance between the two inner lining plates 631 and thus adapting to the guide rail 5. When the inner wall of the guide rail 5 is supported by the two inner lining plates 631, the airbag 632 maintains the set air pressure, realizing flexible adaptive contact and limiting based on air pressure regulation.

[0057] See Figures 3-5 , Figure 9 and Figure 10As shown, each limiting plate 621 has an elastic buffer pad 6211 on its inner side that fits against the outer surface of the guide rail 5. When the guide rail 5 enters the drilling station and is clamped, the guide rail 5 is in an adaptive centering state between the two elastic buffer pads 6211.

[0058] When the guide rail 5 enters the drilling station and is clamped by the lifting plate 62 and the support plate 61, its outer wall surface simultaneously contacts the elastic buffer pad 6211 located inside the two limiting plates 621, and the elastic buffer pad 6211 deforms under pressure.

[0059] As the guide rail 5 continues to move forward and is positioned in the center, the elastic buffer pads 6211 on both sides generate opposing elastic restoring forces due to the force applied, and adhere to the outer surface of the guide rail 5, compensating for the slight dimensional deviations in the width direction of the guide rail 5 through deformation coordination.

[0060] When the guide rail 5 is in the clamped state and drilling is being performed, the two elastic buffer pads 6211 continuously provide flexible contact pressure, so that the guide rail 5 can achieve adaptive centering between the two pads, avoiding surface damage caused by rigid contact.

[0061] See Figure 5 As shown, the drilling mechanism is equipped with the limiting rollers 622 at both the front and rear ends along the conveying direction of the guide rail 5. Each limiting roller 622 is made of metal. When the guide rail 5 enters the drilling station and is clamped, the guide rail 5 is in a limited and unpressurized state between the limiting roller 622 and the support plate 61.

[0062] The lifting plate 62 is provided with a distance sensor on the support plate 61 to detect the distance between the limiting roller 622 and the support plate 61. The distance sensor is not shown in the figure.

[0063] When the guide rail 5 enters the drilling station and is clamped, its upper surface contacts the limiting rollers 622 distributed at the front and rear ends of the drilling mechanism. Each limiting roller 622 is made of metal and has high rigidity and wear resistance, which can provide stable rolling support during the conveying process of the guide rail 5.

[0064] When the guide rail 5 is pressed against the support plate 61 by the lifting plate 62, the front and rear limiting rollers 622 simultaneously form contact with the upper surface of the guide rail 5. The guide rail 5 is constrained between the limiting rollers 622 and the support plate 61. However, since the limiting rollers 622 can rotate freely and are arranged outside the drilling area, the guide rail 5 is in a state of being limited and not subject to vertical clamping force in this area, ensuring that there is no additional stress interference near the drilling point.

[0065] When the relative position between the limiting roller 622 and the support plate 61 changes, the distance sensor set on the lifting plate 62 detects the distance between them in real time and obtains the thickness of the guide rail 5, providing feedback for the limiting accuracy.

[0066] See Figures 3-5 , Figure 9 and Figure 10 As shown, a channel is formed between the guide sleeve 7 and the two through holes. The lower half of the guide sleeve 7 is provided with an air inlet 72 that communicates with the airbag 632, and the upper half of the guide sleeve 7 is provided with an air outlet 73 that communicates with the outside. When the airbag 632 is inflated, some airflow continuously enters the channel, forming a cooling airflow from bottom to top.

[0067] When the airbag 632 is inflated through the inflation port 6321, some of the gas enters the channel formed between the guide sleeve 7 and the two through holes through the air inlet 72 provided in the lower half of the guide sleeve 7.

[0068] As airflow accumulates and continues to flow into the channel, the gas flows upward along the channel, passing through the through-hole path in the borehole area.

[0069] When the gas reaches the air outlet 73 in the upper part of the guide sleeve 7, it is continuously discharged to the outside, forming a stable cooling airflow from bottom to top, which generates airflow heat dissipation effect on the contact area between the drill bit and the guide rail 5 during the drilling process, while the airbag 632 remains in a stable pressure state.

[0070] See Figure 3 , Figure 4 , Figure 9 and Figure 10 As shown, the drilling mechanism includes a drill rod 2 coaxially arranged in the channel, and the drill rod 2 and the channel are clearance fit.

[0071] The drive source used to drive the borehole to move up and down and rotate is not shown in the figure.

[0072] When the drill rod 2 enters the drilling position along the channel, its outer periphery maintains a clearance fit with the inner wall of the channel formed by the guide sleeve 7 and the through hole, leaving a uniform gap between the two.

[0073] When the drill rod 2 is fed and rotated along the channel axis under the drive of the drilling mechanism, the clearance fit ensures that the drill rod 2 does not rub against the guide sleeve 7.

[0074] When the drill rod 2 passes through the channel to drill the guide rail 5, the gap provides a flow path for the cooling airflow, allowing the airflow from bottom to top to pass smoothly along the outer wall of the drill rod 2, thus enhancing the heat dissipation effect.

[0075] See Figure 1 , Figure 2 and Figure 6 As shown, the conveying mechanism includes a rubber roller 3 set at the front end of the drilling mechanism and a roller 4 set at the rear end. Two rubber rollers 3 are symmetrically arranged on the frame 1 along the height direction of the guide rail 5 to form an upper and lower clamping drive structure. Multiple rollers 4 are evenly distributed on the frame 1 along the conveying direction of the guide rail 5 to form a continuous horizontal support structure.

[0076] When the guide rail 5 enters the front end of the conveying mechanism, the two rubber rollers 3, which are symmetrically arranged on the upper and lower sides, form an upper and lower clamping drive structure on the frame 1. The guide rail 5 is clamped between them, and active feeding is achieved by the rotational friction of the rubber rollers 3.

[0077] When the guide rail 5 is driven forward by the rubber roller 3, its rear part gradually enters a continuous horizontal support structure composed of multiple rollers 4 evenly distributed along the conveying direction. The rollers 4 provide stable support to ensure that the guide rail 5 maintains a straight posture during the conveying process.

[0078] As the guide rail 5 continues to move to the drilling station, the front roller 3 completes its driving task, and the rear roller 4 continues to provide rolling support, ensuring that the guide rail 5 smoothly transitions to the clamping area of ​​the anti-bending mechanism 6.

[0079] This invention utilizes an anti-bending mechanism 6 composed of a support plate 61 and a lifting plate 62, combined with upper and lower clamping rubber rollers 3 and continuously supporting rollers 4, to achieve stable conveying and anti-warping control throughout the entire feeding process of the guide rail 5. Before drilling, the guide rail 5 is rigidly supported and dynamically pressed to achieve upper and lower limits, and the flexible fit between the limit roller 622 and the elastic buffer pad 6211 effectively suppresses vibration and deformation. During drilling, the clearance between the drill rod 2 and the channel ensures smooth operation, supplemented by cooling airflow from bottom to top to dissipate heat, reduce thermal deformation, and improve processing stability.

[0080] During drilling, the airbag 632 drives the inner liner 631 to bend outward synchronously with the guide sleeve 7 support 71 as the fulcrum, achieving uniform and adaptive fit to the inner side of the guide rail 5. Air pressure is used to regulate pressure and compensate for dimensional tolerances and positional fluctuations. The inner liner 631 slides against the inner wall of the guide rail 5, ensuring smooth feed and providing continuous lateral support, enhancing bending stiffness. Simultaneously, the elastic buffer pad 6211 on the inner side of the limiting plate 621 applies flexible pressure to the outer side of the guide rail 5, achieving adaptive centering and preventing surface damage. The combined effect of the inner and outer double elastic limiting structures improves the centering, posture stability, and drilling accuracy of the guide rail 5 during multi-hole continuous drilling.

[0081] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A guide rail anti-bending drilling device for punch press parts processing, comprising a frame, a conveying mechanism and a drilling mechanism disposed at the front end along the conveying direction of the frame; Its features are, A bending resistance mechanism is provided on the frame at the position corresponding to the drilling mechanism. The bending resistance mechanism includes a support plate and a lifting plate. The support plate is fixedly mounted on the bracket and located directly below the drilling mechanism; The lifting plate is movably mounted on the bracket and located directly above the support plate; The lifting plate can move up and down relative to the support plate, and the support plate and the lifting plate have through holes coaxially opened on their surfaces to match the drilling points; The bottom of the lifting plate is symmetrically provided with two vertically downward extending limiting plates, and a lateral limiting gap is formed between the two limiting plates; Each limiting plate is equipped with a limiting roller that rotates along the conveying direction of the guide rail, and a vertical limiting gap is formed between the limiting roller and the support plate; The anti-bending mechanism also includes an inner liner assembly disposed between two limiting plates. The bottom of the lifting plate is provided with a guide sleeve for the drilling mechanism to pass through the through hole. The inner liner assembly includes inner liner plates symmetrically disposed on both sides of the guide sleeve. The inner liner plates are attached to the inner side of the guide rail to form a sliding fit. The inner liner is a thin plate structure that can undergo elastic deformation. The inner liner assembly also includes a drive unit for driving the two inner liners to adaptively conform to the inner contour of the guide rail. One end of the inner liner is fixedly connected to the lower end of the guide sleeve, and the other end extends outward. The lower end of the guide sleeve is provided with a support for fixing the two inner liners. When the two inner liners deform under the action of the driving component, the inner liners are in an outward deformation state with the support as the fulcrum. The driving component is a ring-shaped closed airbag. The airbag is fitted on the lower half of the guide sleeve. An internal cavity for accommodating the airbag is formed between the two inner lining plates. The airbag has an inflation port that communicates with the outside. When the airbag is inflated, the two inner lining plates are in a state of synchronous deformation, so that the inner lining plates are tightly attached to the inner wall of the guide rail.

2. The anti-bending drilling equipment for guide rails used in punch press parts processing according to claim 1, characterized in that, Each limiting plate has an elastic buffer pad on its inner side that fits against the outer surface of the guide rail. When the guide rail enters the drilling station and is clamped, the guide rail is in an adaptive centering state between the two elastic buffer pads.

3. The anti-bending drilling equipment for guide rails used in punch press parts processing according to claim 1, characterized in that, The drilling mechanism is equipped with limiting rollers at both the front and rear ends along the conveying direction of the guide rail. Each limiting roller is made of metal. When the guide rail enters the drilling station and is clamped, the guide rail is in a limited and unpressurized state between the limiting roller and the support plate.

4. The anti-bending drilling equipment for guide rails used in punch press parts processing according to claim 1, characterized in that, A channel is formed between the guide sleeve and the two through holes. The lower half of the guide sleeve is provided with an air inlet that communicates with the airbag, and the upper half of the guide sleeve is provided with an air outlet that communicates with the outside. When the airbag is inflated, some airflow continuously enters the channel, forming a cooling airflow from bottom to top.

5. The anti-bending drilling equipment for guide rails used in punch press parts processing according to claim 4, characterized in that, The drilling mechanism includes a drill rod coaxially arranged in the channel, with a clearance fit between the drill rod and the channel.

6. The anti-bending drilling equipment for guide rails used in punch press parts processing according to claim 1, characterized in that, The conveying mechanism includes a rubber roller at the front end of the drilling mechanism and a roller at the rear end. Two rubber rollers are symmetrically arranged on the frame along the height direction of the guide rail to form an upper and lower clamping drive structure. Multiple rollers are evenly distributed on the frame along the conveying direction of the guide rail to form a continuous horizontal support structure.

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