Multi-hole sliding rail type perforating machine

Abstract

The invention belongs to the technical field of machining equipment, and particularly relates to a porous sliding rail type perforating machine which comprises a cutter core seat, a cutter core, a positioning piece, a sliding block and a fixing block. The cutter core seat is a bearing foundation; the positioning piece is embedded in the cutter core seat, and a zigzag-form piece on the positioning piece is inserted into the cutter core limiting groove and is matched with an S-shaped arc-shaped groove surface at the bottom of the cutter core limiting groove to guide the cutter core to reset; two sliding blocks are symmetrically arranged on the two sides of the cutter center base, slide along the cutter center base in a directional mode and are fixedly connected with the fixing block. When the fixing block drives the sliding block to slide, the V-shaped sliding groove of the sliding block presses the cutter core to move up and down. The multiple sets of U-shaped grooves and the corresponding T-shaped cutter cores are formed in the cutter core seat, when the fixing block drives the sliding block to slide along the limiting strip, the V-shaped sliding grooves of the sliding block synchronously press the multiple sets of cutter cores to move up and down, frequent adjustment of workpieces or stations is not needed, multi-specification multi-hole-site synchronous continuous machining can be achieved, and the requirement for batch production is met.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mechanical processing equipment, and in particular relates to a multi-hole sliding rail type punch. BACKGROUND

[0002] In the fields of mechanical processing, stationery manufacturing, furniture assembly, etc., workpiece punching is a basic process that guarantees subsequent assembly precision and product quality, and its processing efficiency and precision directly determine the production cycle and product qualification rate. Therefore, the research and development of high-performance punching equipment has always been one of the core technical directions in the related fields.

[0003] At present, there are various punching devices on the market to meet different processing needs, such as a "multi-station high-efficiency punching device" with a patent number CN118492994A. This device sets two groups of cutter core assemblies in parallel and optimizes the transmission link to reduce the work station switching time, which to some extent improves the operation limitations of traditional single-hole intermittent punch machines. In addition, traditional punching devices also include single-cutter core reciprocating adjustment type, multi-cutter core step-by-step alignment type, etc., which all try to optimize the punching operation from the dimensions of processing efficiency, hole precision, etc. However, the existing punching devices including CN118492994A still have many technical defects in actual industrial application, and it is difficult to meet the processing needs of high efficiency, high precision, long service life and high stability. The specific technical problems are as follows: I. Punching efficiency bottleneck, insufficient continuous processing capacity Traditional punch machines generally adopt a single-hole intermittent operation mode, which can only complete the processing of a single hole at a time. The workpiece position or equipment work station needs to be frequently adjusted during the processing, and the operation continuity is poor, especially when facing batch multi-hole workpieces, the efficiency is extremely low. Even the multi-station device disclosed in CN118492994A, which sets two independent cutter core assemblies, and each cutter core needs to be adjusted and aligned manually or semi-automatically, cannot realize the synchronous continuous processing of multiple specifications and multiple hole positions. II. Punching precision control is insufficient, and hole position deviation risk is high Punching precision depends on the double protection of cutter core reset accuracy and workpiece limiting reliability, but the existing devices have defects in these two aspects: 1. Low cutter core reset accuracy: Traditional devices mostly rely on linear guide grooves to reset the cutter core. The groove wall is easy to wear after long-term sliding, causing horizontal deviation of the cutter core during reciprocating motion. CN118492994A uses a spring assisted reset structure, but the spring is prone to fatigue deformation after long-term compression and rebound, causing unstable reset travel, and further causing longitudinal deviation of the hole position, which cannot meet the processing requirements of precision parts. 2. Unreliable workpiece limiting: Existing equipment (including CN118492994A) generally lacks a dedicated limiting structure that is compatible with multiple workpiece specifications. Most of them use simple blocks or manual clamping methods. During the processing, the workpiece is prone to slippage due to the impact force of the cutting core or the vibration of the equipment. This is especially true for thin stationery boards or irregularly shaped furniture parts, where the hole position deviation caused by slippage is more significant, resulting in a high scrap rate.

[0004] Third, severe wear and tear on components leads to short equipment lifespan and high maintenance costs. The contact friction between the cutting edge and the tool holder (or slide rail) is the core factor causing component wear: In traditional equipment, the cutter core and the cutter holder are mostly in direct, rigid metal contact. During reciprocating sliding, the frictional resistance is high. After long-term use, scratches easily appear on the surface of the cutter core and dents easily appear in the guide groove of the cutter holder, requiring the replacement of the cutter core or cutter holder, resulting in high component replacement costs. Although CN118492994A coats the surface of the cutter core with a ceramic wear-resistant coating to alleviate wear, the coating is prone to peeling off under high-frequency impact and friction, and the wear rate in the area where the coating has peeled off is significantly accelerated.

[0005] IV. Poor structural stability affects operational reliability. The existing equipment has two key shortcomings in its structural design: 1. Weak resistance to deformation of the tool holder: Traditional punching machine tool holders are mostly integral casting structures, which are prone to integral bending deformation when subjected to punching pressure for a long time; Although CN118492994A splits the tool holder into left and right sections, it is rigidly connected by bolts. After long-term use, gaps are prone to appear at the connection, resulting in asynchronous guide trajectories of the two sections of the tool holder. 2. Poor synchronization of transmission components: The transmission components such as sliders and fixed blocks in existing equipment are mostly connected by simple bolts or clips. After long-term operation, they are prone to loosening, resulting in inconsistent sliding speeds of various components, which intensifies equipment vibration and further affects drilling accuracy and operational safety.

[0006] In summary, given the shortcomings of existing technologies in terms of drilling efficiency, precision control, component wear, and structural stability, there is an urgent need to develop a drilling equipment that can achieve continuous synchronous multi-hole processing, ensure precise tool center repositioning and reliable workpiece positioning, effectively reduce component friction and wear, and significantly improve structural deformation resistance and transmission synchronization. This would meet the pressing needs of current machining, stationery manufacturing, and furniture assembly industries for efficient, high-precision, and long-life drilling operations. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the purpose of this invention is to provide a multi-hole sliding rail type punching machine.

[0008] A multi-hole sliding rail type punching machine according to the present invention includes a core holder, a core, a positioning plate, a slider, and a fixing block; The knife core seat is a bearing base; The positioning sheet is embedded in the knife core seat, the folding piece on the positioning sheet is inserted into the knife core limiting groove, and the knife core is guided to reset through cooperation with the S-shaped arc groove surface at the bottom of the knife core limiting groove; Two symmetrical sliding blocks are arranged on the two sides of the knife core seat, the sliding blocks slide along the knife core seat, and the sliding blocks are fixedly connected with the fixed blocks; When the fixed blocks drive the sliding blocks to slide, the V-shaped sliding groove of the sliding blocks presses the up-down movement of the knife core.

[0009] Further, the vertical section of the knife core seat is H-shaped, a plurality of groups of U-shaped grooves are arranged in the top center, each group of U-shaped grooves is composed of symmetrical U-shaped grooves in the front wall and the rear wall of the knife core seat, limit strips are fixed in the middle of the front and rear ends of the knife core seat, the limit strips are located between the small triangular blocks of the sliding blocks and the bottoms of the sliding blocks, a base is arranged at the bottom of the knife core seat, a clamping groove matched with the knife core seat is arranged in the middle of the base, limit clamping openings are arranged on the front and rear sidewalls of the clamping groove, clamping blocks corresponding to the limit clamping openings are arranged at the bottom of the knife core seat, the left and right sides of the knife core seat are fixed with the base through two second screws, an upper cover shell is arranged outside the knife core seat, extension parts are symmetrically arranged on the front side, and the extension parts are fixed with the base through first screws; installation ears are arranged at the left and right ends of the knife core seat, and the installation ears are fixed with the base and the upper cover shell through third screws.

[0010] Further, the positioning sheet is C-shaped and arranged in the interior of the knife core seat, a sliding hole corresponding to the knife core is arranged in the middle of the transverse partition plate of the knife core seat, a fixing hole coinciding with the sliding hole is arranged at the bottom of the positioning sheet, and a long groove for limiting the to-be-punched part is arranged in the middle of the front side of the transverse partition plate; symmetric C-shaped windows are arranged on the front and rear sides of the positioning sheet, the bottom of the window is bent to form a folding piece to the side of the knife core, a symmetric limiting groove matched with the folding piece is arranged in the middle of the knife core, and the bottom wall surface of the limiting groove is an S-shaped arc groove surface.

[0011] Further, the knife core is T-shaped, U-shaped slot openings are arranged at the top front and rear ends, and the knife core can freely slide up and down in the U-shaped slot; sleeve sleeves are axially arranged at the left and right ends of the top of the knife core, buckles are arranged on the outer side of the knife core of the sleeve sleeves, and the buckles are used to limit the axial sliding of the sleeve sleeves along the knife core.

[0012] Further, the sliding blocks are two and symmetrically arranged on the front and rear sides of the knife core seat and are C-shaped; a large triangular block is arranged at the top of the side of the sliding block close to the fixed block, two small triangular blocks are arranged below the large triangular block at intervals, and the three form a V-shaped sliding groove.

[0013] Further, the fixed block is inverted C-shaped, grooves are arranged in the middle of the front and rear side wall plates, clamping blocks matched with the grooves are fixed in the middle of the side of the sliding block close to the fixed block; a long strip-shaped screw seat is arranged at the top of the fixed block, a long sliding hole is arranged at the top of the upper cover shell, and the screw seat movably penetrates through the long sliding hole.

[0014] Furthermore, the blade holder includes a left blade holder and a right blade holder. The connecting ends of the left and right blade holders are provided with openings, and two connecting pieces are provided between them. The connecting pieces are fixedly connected to the left and right blade holders by passing through the openings with flat-head rivets. The positioning piece can be divided into several pieces, and multiple positioning pieces are sequentially installed inside the left and right blade holders.

[0015] Furthermore, it also includes a cover plate, which is located directly above the blade holder. Several deformable right-angled locking blocks are provided at the front and back of the bottom. The blade holder has a slot that matches the right-angled locking blocks. The cover plate is fixed to the blade holder by connecting the right-angled locking blocks with the slots.

[0016] Furthermore, it also includes a sliding sleeve seat and a sliding sleeve cover. The sliding sleeve seat is C-shaped with an upward opening and is located on the outside of the upper cover shell. The sliding sleeve seat is fixedly connected to the screw seat of the fixing block by a plurality of fourth screws. The sliding sleeve seat has a locking opening in the middle of the front and rear walls. The inner wall of the sliding sleeve cover is equipped with a locking block corresponding to the locking opening. The sliding sleeve cover is fixed to the sliding sleeve seat by locking the locking block and locking the locking opening.

[0017] Furthermore, a garbage cover is fitted to the bottom of the base, and multiple arc-shaped springs are provided at the front end of the garbage cover. The arc-shaped springs are used to make the garbage cover tightly fit the bottom of the base. Several foot pads are fixed to the bottom of the base, and multiple dry foot pads are respectively set at the four corners of the bottom of the base.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention uses multiple sets of U-shaped grooves and corresponding T-shaped cutter cores on the cutter core seat. When the fixed block drives the slider to slide along the limit strip, the V-shaped groove of the slider synchronously presses multiple sets of cutter cores to move up and down. It can realize synchronous and continuous processing of multiple specifications and multiple holes without frequent adjustment of the workpiece or station, and is suitable for batch production needs.

[0019] 2. This invention uses a folded positioning piece inserted into the tool core limiting groove, which, together with the S-shaped arc groove at the bottom of the limiting groove, guides the tool core to accurately reset, avoiding the reset deviation caused by the fatigue of existing springs; the long groove of the tool core seat transverse partition plate reliably limits the workpiece to be drilled, preventing workpiece slippage and hole position deviation, thus meeting the requirements of precision machining.

[0020] 3. The present invention uses a sleeve fitted on the top of the blade core and a retaining ring to limit it, which transforms the direct friction between the blade core and the U-shaped groove into low-friction contact with the sleeve, eliminating the need for frequent recoating of the wear-resistant coating; the blade core seat is divided into left and right sections to distribute the drilling pressure, increasing its service life.

[0021] 4. In this invention, the blade holder and the upper cover are fixed by multiple sets of screws, and the left and right blade holders are connected by connecting plates and flat-head rivets to avoid the problem of gaps in the blade holder connection; the cover plate prevents the blade from detaching, the base pads buffer the impact, control the synchronous deviation of the transmission components, significantly reduce the vibration of the equipment during operation, and greatly improve the stability of operation. Attached Figure Description

[0022] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is an exploded view of Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the assembly structure of the positioning piece and the cutting core of the present invention; Figure 5 This is an exploded view of Embodiment 2 of the present invention; Figure 6 This is an exploded view of Embodiment 3 of the present invention.

[0023] The following are the labeling elements in the figure: Detailed Implementation

[0024] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0025] Example 1 This embodiment discloses a multi-hole sliding rail type punching machine, including a core holder 6, a positioning piece 9, a core 10, a slider 12, and a fixing block 13; The core holder 6 is a sleeve with an H-shaped vertical cross section. Several U-shaped grooves are opened in the center of the top of the core holder 6. The front and rear walls of the core holder 6 are symmetrically arranged with U-shaped grooves. The symmetrical U-shaped grooves on the front and rear walls of the core holder 6 form a group. A core 10 is set in each group of U-shaped grooves. The blade core 10 is T-shaped, with U-shaped slots extending from both the front and rear ends of the top of each blade core 10, allowing the blade core 10 to be mounted in the U-shaped slots and slide freely up and down within the corresponding U-shaped slots. C-shaped positioning piece 9 is set inside the blade holder 6. The middle of the transverse partition of the blade holder 6 has a through-hole that runs vertically through the blade. The through-hole corresponds one-to-one with the blade 10, which facilitates continuous drilling of the workpiece by the blade 10. The bottom of the positioning piece 9 has a fixing hole that coincides with the through-hole on the blade holder 6, which ensures that the blade 10 can perform drilling operations smoothly. The front middle of the transverse partition of the blade holder 6 has a long groove, which is used to limit the placement of the workpiece to be drilled and prevent displacement during the drilling process. The positioning plate 9 has symmetrical C-shaped windows on the front and back sides. The bottom part of the window is bent towards the blade core 10 to form a folded part. Each blade core 10 has two limiting grooves in the middle. The two limiting grooves are symmetrically arranged. The blade core 10 can slide back and forth by the directional sliding of the limiting groove and the folded part. The bottom wall of the limiting groove is provided with an S-shaped arc groove surface. The arc groove surface can abut against the folded part, so that the blade core 10 can be reset and locked after being lifted. There are two sliders 12, which are respectively set on the front and rear sides of the core holder 6. The two sliders 12 are symmetrically arranged and are C-shaped. A large triangular block is installed on the top of the slider 12 on the side near the fixed block 13. Two small triangular blocks are arranged at intervals below the large triangular block. The large triangular block and the two small triangular blocks form a V-shaped groove. The V-shaped groove can press the core 10 to slide. Limiting strips are fixedly installed in the middle of the front and rear ends of the core holder 6. The limiting strips are set between the small triangular blocks and the bottom of the sliders 12, so that the sliders 12 can slide along the limiting strips. The fixing block 13 is an inverted C-shaped base. The front and rear side panels of the fixing plate 13 have grooves in the middle. The slider 12 is fixedly installed with a corresponding locking block on the middle of the other side of the fixing block 13. The two sliders 12 can be engaged with the grooves of the fixing block 13 through the locking blocks, so that the two sliders 12 can slide synchronously with the fixing plate 13.

[0026] The base 1 is located at the bottom of the blade holder 6. A corresponding slot for the blade holder 6 is located in the middle of the base 1, and limit slots are provided on both the front and rear sides of the slot. A corresponding locking block is located at the bottom of the blade holder 6. The blade holder 6 is positioned on the base 1 by engaging the locking block with the limit slot. Two second screws 7 are located on the left and right sides inside the blade holder 6, allowing for a secure connection between the blade holder 6 and the base 1. A waste cover 3 is fitted over the bottom of the base 1. Multiple arc-shaped springs are located at the front end of the waste cover 3. The deformation of these springs allows the waste cover 3 to completely cover the base 1 and seal the bottom of the blade holder 6, thus collecting waste material after drilling. Several foot pads are fixedly installed at the bottom of the base 1. These foot pads cushion the pressure during drilling, reducing deformation and increasing the base's lifespan.

[0027] The base 1 is covered by an upper cover shell 2, which covers the outside of the blade holder 6. The front side of the upper cover shell 2 has symmetrical extensions on the left and right sides. The extensions are fixedly connected to the base 1 by a first screw 5. The blade holder 6 has mounting ears at both ends, and the mounting ears are equipped with corresponding third screws 8. The blade holder 6 is fixedly connected to the base 1 and the upper cover shell 2 by the third screws 8 passing through the mounting ears, so as to prevent the blade holder 6 from shifting during the drilling process.

[0028] A cover plate 11 is provided directly above the core holder 6. Several deformable right-angled blocks are provided at the bottom front and back of the cover plate 11. The right-angled blocks can be engaged with the slots opened on the core holder 6 to completely fix the cover plate 11 on the core holder 6, thereby covering the U-shaped groove of the core holder 6, restricting the sliding stroke of the core 10, and preventing the core 10 from resetting and detaching.

[0029] The top of the fixing block 13 is provided with a screw seat, which is elongated and moves through the long sliding hole opened on the top of the upper cover 2. The fixing block 13 can slide in the long sliding hole through the screw seat. A sliding sleeve seat 14 is provided directly above the fixing block 13. The sliding sleeve seat 14 is located on the outside of the upper cover 2. Multiple fourth screws 15 are provided on the sliding sleeve seat 14. The sliding sleeve seat 14 and the screw seat of the fixing block 13 are fixedly connected by the fourth screws 15. The sliding sleeve seat 14 is an upward-opening C-shaped seat. The front and rear walls of the sliding sleeve seat 14 are provided with a locking opening. A sliding sleeve cover 16 is provided on the sliding sleeve seat 14. The inner wall of the sliding sleeve cover 16 is equipped with a locking block corresponding to the locking opening, thereby fixing the sliding sleeve cover 16 on the sliding sleeve seat 14.

[0030] Example 2 The structure of this embodiment of the multi-hole sliding rail type punch is the same as that of embodiment 1. The main improvement is that sleeves 21 are axially sleeved on both the left and right ends of the top of the core 10, and a retaining ring 22 is provided on the outer side of the sleeve 21. The retaining ring 22 restricts the sleeve 21 from sliding along the axis on the top of the core 10. The sleeve 21 makes sliding contact with the U-shaped groove on the core seat 6, reducing the friction between the core 10 and the core seat 6 and ensuring the smooth movement of the core 10.

[0031] Example 3 The structure of this embodiment of the multi-hole sliding rail type punching machine is the same as that of embodiment 2. The main improvement is that the core holder 6 is divided into a left core holder 17 and a right core holder 18. The left core holder 17 and the right core holder 18 have openings at the connecting ends. Two connecting pieces 19 are provided between the left core holder 17 and the right core holder 18. The connecting pieces 19 are equipped with flat-head rivets 20. The positioning piece 9 is divided into six pieces and is installed on the left core holder 17 and the right core holder 18 in sequence. The flat-head rivets 20 pass through the connecting pieces 19 and the openings to fix the left core holder 17 and the right core holder 18. This can effectively avoid the deformation of the core holder 6 and the positioning piece 9 caused by the pressure of punching for a long time, which would affect the punching efficiency and integrity.

[0032] Working principle When the present invention performs the drilling operation, the operator pushes the sliding sleeve cover 16 to drive the sliding sleeve seat 14. The sliding sleeve seat 14 drives the fixing block 13 to slide in a direction along the long sliding hole of the upper cover shell 2. The fixing block 13 further drives the two sliders 12 that are engaged with it to slide in a direction along the limiting strip of the blade seat 6. The right half of the V-shaped groove on the slider 12 gradually contacts the top protruding end of the blade 10 during the sliding process and generates pressure, so that the blade 10 slides vertically downward along the U-shaped groove of the blade seat 6. During the downward movement, the blade 10 passes through the fixing hole of the positioning piece 9, the sliding hole of the blade seat 6 and the workpiece to be drilled in sequence, thus completing the drilling operation. The waste generated by drilling falls into the base 1 under the action of gravity and is collected by the garbage cover 3. After drilling is completed, continue to push the sliding sleeve 14. The sliding sleeve 14 drives the fixed block 13 and the slider 12 to slide. The left half of the V-shaped groove lifts the top of the knife core 10. Under the reset force of the folded part on the positioning piece 9, the knife core 10 slides upward along the U-shaped groove. The folded part of the copper wire positioning piece 9 slides along the limiting groove of the knife core 10. When the knife core 10 rises to the initial upper position, the lowest point of the S-shaped arc groove surface is tightly abutted with the folded part to achieve reset and locking. At the same time, the cover plate 11 restricts the knife core 10 from moving too high to avoid it from falling out of the U-shaped groove. If a sleeve 21 is axially sleeved at the top left and right ends of the blade core 10 and the outer side of the sleeve 21 is limited by the buckle 22, then when the blade core 10 slides along the U-shaped groove, the sleeve 21 contacts the wall of the U-shaped groove, which transforms the direct friction between the blade core 10 and the blade core seat 6 into a low-friction contact between the sleeve 21 and the U-shaped groove, reducing component wear and ensuring smooth sliding. If the core holder 6 is divided into a left core holder 17 and a right core holder 18 and fixed by a connecting piece 19 and a flat-head rivet 20, and the positioning piece 9 is divided into six corresponding installation pieces, the drilling pressure can be distributed, the core holder 6 and the positioning piece 9 can be prevented from deforming due to long-term pressure, the sliding trajectory of the core 10 can be stabilized, and the drilling accuracy can be guaranteed.

[0033] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 this application.

[0034] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A multi-hole sliding rail type punching machine, characterized in that, It includes a core holder (6), a core (10), a positioning plate (9), a slider (12), and a fixing block (13); The blade holder (6) serves as the load-bearing foundation; The positioning piece (9) is embedded in the blade holder (6), and the folded part on the positioning piece (9) is inserted into the limiting groove of the blade (10). The blade (10) is guided to reset by cooperating with the bottom S-shaped arc groove surface of the limiting groove of the blade (10). Two sliders (12) are symmetrically arranged on both sides of the blade holder (6). The sliders (12) slide along the blade holder (6) in a directional manner, and the sliders (12) are fixedly connected to the fixing block (13). When the fixed block (13) drives the slider (12) to slide, the V-shaped groove of the slider (12) presses the knife core (10) to move up and down.

2. The multi-hole sliding rail type punching machine according to claim 1, characterized in that, The blade seat (6) has an H-shaped vertical cross section and several sets of U-shaped grooves are provided in the center of the top. Each set of U-shaped grooves is composed of symmetrical U-shaped grooves on the front and rear walls of the blade seat (6). Limiting strips are fixed in the middle of the front and rear ends of the blade seat (6). The limiting strips are located between the small triangular block of the slider (12) and the bottom of the slider (12). A base (1) is provided at the bottom of the blade seat (6). A slot adapted to the blade seat (6) is provided in the middle of the base (1). Limiting slots are provided on the front and rear side walls of the slot. A locking block corresponding to the limiting slot is provided at the bottom of the blade seat (6). The left and right sides of the inside of the blade seat (6) are fixed to the base (1) by two second screws (7). An upper cover shell (2) is provided on the outside of the blade seat (6). An extension is provided symmetrically on the left and right sides of the front side. The extension is fixed to the base (1) by a first screw (5). Mounting ears are provided at the left and right ends of the blade seat (6). The mounting ears are fixed to the base (1) and the upper cover shell (2) by a third screw (8).

3. The multi-hole sliding rail type punching machine according to claim 2, characterized in that, The positioning piece (9) is C-shaped and is located inside the blade holder (6). The middle part of the transverse partition of the blade holder (6) has a sliding hole that corresponds to the blade (10). The bottom of the positioning piece (9) has a fixing hole that coincides with the sliding hole. The middle part of the front side of the transverse partition has a long groove for limiting the part to be drilled. The positioning piece (9) has symmetrical C-shaped windows on the front and rear sides. The bottom of the window is bent towards the blade (10) to form a folded part. The middle part of the blade (10) has a symmetrical limiting groove that matches the folded part. The bottom wall of the limiting groove is an S-shaped arc groove surface.

4. The multi-hole sliding rail type punching machine according to claim 1, characterized in that, The blade core (10) is T-shaped, with U-shaped slots extending from the front and rear ends of the top, allowing it to slide freely up and down within the U-shaped slots; sleeves (21) are axially fitted on both the left and right ends of the top of the blade core (10), and a retaining ring (22) is provided on the blade core (10) outside the sleeve (21), the retaining ring (22) being used to restrict the sleeve (21) from sliding along the axial direction of the blade core (10).

5. The multi-hole sliding rail type punching machine according to claim 1, characterized in that, The sliders (12) are two in number and are symmetrically arranged on the front and rear sides of the core seat (6), forming a C shape. A large triangular block is installed on the top of the slider (12) on the side near the fixed block (13), and two small triangular blocks are arranged at intervals below the large triangular block, forming a V-shaped groove.

6. The multi-hole sliding rail type punching machine according to claim 2, characterized in that, The fixing block (13) is in the shape of an inverted C, and the front and rear side panels are provided with grooves in the middle. The slider (12) is fixed with a card block that matches the groove in the middle of the side of the fixing block (13). The top of the fixing block (13) is provided with a long strip screw seat, and the top of the upper cover (2) is provided with a long sliding hole. The screw seat moves through the long sliding hole.

7. The multi-hole sliding rail type punching machine according to claim 2, characterized in that, The blade holder (6) includes a left blade holder (17) and a right blade holder (18). The connecting ends of the left blade holder (17) and the right blade holder (18) are provided with openings, and two connecting pieces (19) are provided between them. The connecting pieces (19) are fixedly connected to the left blade holder (17) and the right blade holder (18) by passing through the openings with flat-head rivets (20). The positioning pieces (9) can be divided into several pieces, and multiple positioning pieces (9) are installed in sequence inside the left blade holder (17) and the right blade holder (18).

8. The multi-hole sliding rail type punching machine according to claim 1, characterized in that, It also includes a cover plate (11), which is located directly above the core holder (6). Several deformable right-angled locking blocks are provided at the bottom front and back. The core holder (6) has a slot that matches the right-angled locking blocks. The cover plate (11) is fixed to the core holder (6) by connecting the right-angled locking blocks with the slot.

9. The multi-hole sliding rail type punching machine according to claim 2, characterized in that, It also includes a sliding sleeve seat (14) and a sliding sleeve cover (16). The sliding sleeve seat (14) is C-shaped with an upward opening and is located on the outside of the upper cover shell (2). The sliding sleeve seat (14) is fixedly connected to the screw seat of the fixing block (13) by a plurality of fourth screws (15). The sliding sleeve seat (14) has a locking opening in the middle of the front and rear walls. The inner wall of the sliding sleeve cover (16) is equipped with a locking block corresponding to the locking opening. The sliding sleeve cover (16) is fixed to the sliding sleeve seat (14) by locking the locking block and locking the locking opening.

10. The multi-hole sliding rail type punching machine according to claim 2, characterized in that, The bottom of the base (1) is covered with a garbage cover (3), and the front end of the garbage cover (3) is provided with multiple arc-shaped springs. The arc-shaped springs are used to make the garbage cover (3) tightly cover the bottom of the base (1). Several foot pads (4) are fixed at the bottom of the base (1), and multiple dry foot pads (4) are respectively set at the four corners of the bottom of the base (1).

Images