Automatic hole puncher for round pipe line

Abstract

The utility model relates to round pipe perforating technical field especially relates to a kind of round pipe line automatic puncher, including external frame, the inside of external frame is provided with discharge assembly, round pipe is transported to leave work area after processing completion, the top of discharge assembly is provided with feeding assembly, feeding assembly grabs and hoists round pipe, it is moved from feeding position and placed on the discharge assembly below, make good preparation for subsequent processing, the both sides of the position of external frame close to its discharge port are provided with processing assembly, processing assembly intercepts the round pipe hoisted to round pipe, makes it stop in preset processing position, and in turn from radial and end axial positioning, realize the restriction of the radial movement, axial movement of round pipe, ensure that round pipe is stably fixed in correct position and posture before processing, after completing positioning, processing assembly carries out punching to the round pipe both ends sidewall that has been fixed simultaneously, realizes the accurate automatic processing of round pipe.

Description

Technical Field

[0001] This utility model relates to the field of circular pipe drilling technology, and in particular to an automatic drilling machine for circular pipes. Background Technology

[0002] In the installation of plastic piping systems or the manufacture of plastic components (such as furniture and railings), it is often necessary to drill holes in the end sidewalls of plastic round pipes. Compared to round pipes with rectangular cross-sections, round pipes with circular cross-sections are more prone to rotation under torsional torque. However, most drilling devices, designed to drill holes in round pipes, are not specifically designed for round pipes. They rely solely on applying radial clamping force from the top or side of the round pipe, using static friction between the contact surfaces to prevent rotation during drilling. This can lead to relative slippage between the round pipe and the fixture when the impact force is generated during punching. This slippage causes hole position deviation, affecting the final drilling quality. Utility Model Content

[0003] The purpose of this invention is to provide an automatic drilling machine for circular pipelines to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An automatic drilling machine for circular pipes includes an outer frame, an inner discharge component, an upper feed component, and processing components on both sides of the outer frame near its discharge port. The processing components intercept the circular pipe being transported and position it radially and axially at the ends, while preventing its circumferential rotation. Finally, the machine drills holes in the side walls at both ends of the circular pipe.

[0006] Preferably, the processing assembly includes a mounting bracket fixedly mounted on an external frame, with a position sensor mounted on one side of the mounting bracket; a fourth cylinder is fixedly mounted on the bottom of the mounting bracket, the fourth cylinder is located on the side near the circular tube, and the piston rod of the fourth cylinder is set to face upward and is fixedly mounted with a stop block;

[0007] A third cylinder is fixedly installed above the mounting bracket. The piston rod of the third cylinder is set to face downwards and a rubber block is fixedly installed on it. The rubber block has an inverted V-shaped groove facing downwards.

[0008] The second cylinder is fixedly mounted on one side of the mounting bracket perpendicular to the third cylinder. The piston rod of the second cylinder is set to face the end of the round tube and a top block is fixedly mounted thereon. A pressure block matching the internal shape of the round tube is fixedly mounted on the side of the top block near the round tube.

[0009] The fifth cylinder is fixedly installed below the mounting bracket. The piston rod of the fifth cylinder is set to face upwards and a punch is fixedly installed thereon.

[0010] Preferably, the discharge assembly includes two stop bars fixedly installed on the outer frame, and rubber seats are installed on the side wall of the stop bars near the processing position.

[0011] Preferably, a pair of coaxially connected synchronous pulleys are rotatably mounted at both ends of the two stop levers, and the two pairs of synchronous pulleys are connected to two synchronous belts from both ends. A second motor is fixedly mounted at one end of one of the synchronous pulleys.

[0012] Preferably, the feeding assembly includes a first motor fixedly mounted on an external frame, the first motor's shaft being connected to a screw, the screw being threadedly connected to a movable seat, and the movable seat having optical shafts passing through its ends at both ends; two first cylinders are fixedly mounted on the bottom of the movable seat, and cylinder grippers are connected below the first cylinders.

[0013] Preferably, the rubber block is covered with a protective sleeve.

[0014] Compared with the prior art, the advantages of this utility model are as follows:

[0015] 1. The round tube is axially intercepted by the stop block driven by the fourth cylinder, radially pressed by the rubber block with V-groove driven by the third cylinder, and end-tightened by the top block and pressure block driven by the second cylinder. This multi-directional positioning of the round tube ensures radial and axial stability during drilling and guarantees hole position accuracy.

[0016] 2. By setting a rubber seat on the baffle of the discharge component, which cooperates with the rubber block with V-groove, the round tube is circumferentially limited, preventing the round tube from rotating circumferentially during drilling, thus further improving the stability of the drilling process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0019] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the feeding assembly structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the material discharge component structure of this utility model;

[0022] Figure 5This is a schematic diagram of the processing component structure of this utility model;

[0023] Figure 6 This is an enlarged schematic diagram of the structure at point A of this utility model.

[0024] The attached figures are labeled as follows:

[0025] 1. Feeding assembly; 11. Optical shaft; 12. Screw; 13. First motor; 14. First cylinder; 15. Cylinder gripper; 16. Moving seat;

[0026] 2. Processing components; 21. Mounting bracket; 22. Second cylinder; 221. Top block; 222. Pressure block; 23. Third cylinder; 231. Rubber block; 232. Protective sleeve; 24. Fourth cylinder; 241. Stop block; 25. Fifth cylinder; 251. Punching tool;

[0027] 3. Discharge assembly; 31. Baffle bar; 32. Synchronous belt; 33. Synchronous pulley; 34. Second motor; 35. Rubber seat;

[0028] 4. External frame; 5. Position sensor. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] An automatic hole punching machine for circular pipes, such as Figures 1-6 As shown, the machine includes an outer frame 4, inside which is a discharge assembly 3. After processing, the discharge assembly 3 transports the round tube away from the working area. Above the discharge assembly 3 is a feeding assembly 1, which grabs and lifts the round tube, moving it from the loading position to the processing station. On both sides of the outer frame 4 near its discharge port, processing assemblies 2 are arranged. The processing assemblies 2 intercept the lifted round tube, stopping it at a preset processing position, and sequentially position it radially and axially at the ends, thus restricting the radial and axial movement of the round tube. This ensures that the round tube is stably fixed in the correct position and posture before processing. After positioning, the processing assembly 2 simultaneously punches holes in the side walls of both ends of the fixed round tube (using a punching process that does not generate dust when punching the round tube), enabling this punching machine to achieve efficient, precise, and automated processing of both ends of the round tube.

[0031] The processing component 2 includes a mounting bracket 21 fixedly installed on the outer frame 4. A position sensor 5 is installed on one side of the mounting bracket 21. The sensor is used to detect the round tube conveyed by the feeding component 1 and the discharging component 3. When the position sensor 5 detects that the round tube has reached the predetermined position, it transmits the signal to the PLC control center, which controls other components to stop the round tube at the processing position.

[0032] A fourth cylinder 24 is fixedly installed at the bottom of the mounting bracket 21. The fourth cylinder 24 is located on the side close to the round tube. The piston rod of the fourth cylinder 24 is set to face upward and a stop block 241 is fixedly installed. When the round tube is identified by the position sensor 5 and is in the processing position, the fourth cylinder 24 pushes the stop block 241 to move upward, mechanically blocking it from the discharge direction of the round tube to prevent it from leaving the processing position.

[0033] A third cylinder 23 is fixedly installed above the mounting bracket 21. The piston rod of the third cylinder 23 is set to face downward and a rubber block 231 is fixedly installed thereon. The rubber block 231 has an inverted V-shaped groove facing downward. The third cylinder 23 drives the rubber block 231 to move downward. The V-shaped groove is used to press the top of the side wall of the round tube from above. The rubber material provides sufficient friction to effectively prevent the round tube from rotating circumferentially during the drilling process, while achieving radial pressing and fixing.

[0034] A second cylinder 22 is fixedly installed on one side of the mounting bracket 21 perpendicular to the third cylinder 23. The piston rod of the second cylinder 22 is set to face the end of the round tube, and a top block 221 is fixedly installed thereon. The top block 221 axially presses against the end of the round tube. A pressure block 222 matching the internal shape of the round tube is fixedly installed on the side of the top block 221 close to the round tube. When the drilling is completed and the third cylinder 23 drives the rubber block 231 to retract upward, this matching pressure block 222 can prevent the round tube from being lifted up by the friction between it and the rubber block 231, ensuring that the round tube can remain stably on the discharge assembly 3, thus ensuring smooth discharge.

[0035] A fifth cylinder 25 is fixedly installed below the mounting bracket 21. The piston rod of the fifth cylinder 25 is set to face upward and a punching cutter 251 is fixedly installed. When the round tube is positioned and clamped, the fifth cylinder 25 drives the punching cutter 251 to move upward and punch holes in the side walls of the round tube near both ends from below.

[0036] The discharge assembly 3 includes two stop bars 31 fixedly installed on the outer frame 4. During the conveying process, the two ends of the round tube rely on the two stop bars 31 respectively and move along the stop bars 31 until they reach the preset processing position. A rubber seat 35 is installed on the side wall of the stop bar 31 near the processing position. When the round tube is hoisted above the processing position, the feeding assembly 1 lowers it and cooperates with the discharge assembly 3 to accurately convey it to the processing position. The bottom side of the end of the round tube falls exactly into the rubber seat 35. The rubber seat 35 provides radial bottom support and positioning for the round tube. The rubber seat 35 cooperates with the rubber block 231 with V-groove that is pressed from above. The lower rubber seat 35 supports and constrains the bottom of the round tube, and the upper V-groove is pressed from the top. The two form a radial clamping of the round tube, thereby limiting the circumferential rotation of the round tube when subjected to punching force, thus improving the positional accuracy and processing quality during punching.

[0037] Both ends of the two stop levers 31 are rotatably mounted with a pair of coaxially connected synchronous pulleys 33. The two pairs of synchronous pulleys 33 are connected to two synchronous belts 32 from both ends. An anti-slip layer is provided on the outer side of the synchronous belts 32, which contacts the cylindrical tube wall to facilitate subsequent material discharge. A second motor 34 is fixedly mounted on one end of each synchronous pulley 33. When the second motor 34 runs, it drives the synchronous pulley 33 connected to it and transmits power to the entire conveying system through the synchronous belts 32, causing all the synchronous pulleys 33 to rotate synchronously. The use of two synchronous belts 32 driven by coaxial synchronous pulleys 33 for conveying provides a stable and symmetrical driving force for the cylindrical tube, avoiding… This eliminates deviation or jamming during the conveying process, ensuring that both ends of the round tube are stably and synchronously fed onto the discharge assembly 3. The round tube is transported by the meshing of the teeth of the synchronous belt 32 and the tooth grooves of the synchronous pulley 33. When the synchronous pulley 33 rotates, its teeth mesh and pull the belt teeth, forming tension on the tight side of the synchronous belt 32. This tension transmits torque to the synchronous pulley 33 at the other end through meshing, thereby driving the synchronous belt 32 and the two synchronous pulleys 33 to run synchronously. Furthermore, since the round tube is relatively light and the force points at both ends are on the stop bar 31 during the unloading stage, the synchronous belt 32 can synchronously drive both ends of the round tube to discharge.

[0038] The feeding assembly 1 includes a first motor 13 fixedly mounted on the outer frame 4. The shaft of the first motor 13 is connected to a screw 12, and the screw 12 is threadedly connected to a movable seat 16. The first motor 13 drives the movable seat 16 to move along the feeding direction through the shaft and the screw 12. The movable seat 16 has optical shafts 11 passing through its ends at both ends. When the first motor 13 starts, its output shaft drives the screw 12 to rotate. Since the optical shafts 11 pass through both ends of the movable seat 16, these optical shafts 11 restrict the movable seat 16 so that it cannot rotate with the screw 12. Therefore, under the rotation drive of the screw 12, the movable seat 16 slides along the feeding direction under the drive of the screw 12 thread.

[0039] Two first cylinders 14 are fixedly installed at the bottom of the moving seat 16. A cylinder gripper 15 is connected below the first cylinder 14. The first cylinder 14 drives the cylinder gripper 15 to perform opening or clamping actions by controlling the extension and retraction of the piston rod. After the cylinder gripper 15 clamps the round tube at the loading position, the first motor 13 drives the moving seat 16 to carry the clamped round tube and move along the optical axis 11 to the designated position above the discharge assembly 3. Then, the first cylinder 14 controls the cylinder gripper 15 to release, and accurately place the round tube on the synchronous belt 32 below, completing the automatic loading. In the mechanical field, the cylinder gripper 15 is a common automated actuator. Its basic working principle is: using compressed air as a power source, driving the piston inside the cylinder to move. The piston converts the linear motion into the parallel opening and closing or swinging motion of the gripper fingers through a specific mechanical structure such as a wedge, connecting rod or gear rack, thereby realizing the gripping and releasing of the workpiece.

[0040] The rubber block 231 is covered with a protective sleeve 232. The rubber block 231 limits the elastic deformation range of the V-groove opening when it is subjected to radial compression, preventing it from being too open and causing insufficient clamping force on the round tube. This ensures that when the third cylinder 23 is pressed down, the V-groove of the rubber block 231 can make stable contact with the outer wall of the round tube, thereby improving the stability and processing accuracy of the drilling process.

[0041] The motor model is FISCHER PF-30-24 / 1, the cylinder model is SMC CY1S 32-50-M5, the position sensor 5 model is Omler E2B-M12KS08-WZ-B1, the cylinder gripper 15, and the connection and logic between the cylinder, solenoid valve, and PLC control center are all widely used technical means in this field. Their specific structure and working principle belong to the prior art in this field and will not be described in detail here.

[0042] The working principle of the automatic hole-drilling machine for circular pipes provided by this utility model is as follows:

[0043] The first motor 13 drives the screw 12 to rotate, and the movable seat 16, which is threadedly engaged with the screw 12, moves linearly and drives the first cylinder 14 and cylinder gripper 15 at its bottom to move to the loading station. At this time, the first cylinder 14 drives the cylinder gripper 15 to move and clamp the round tube to be processed.

[0044] Subsequently, the first motor 13 continues to drive the moving seat 16 to move the round tube above the discharge assembly 3. Once in position, the cylinder gripper 15 releases, placing the round tube on the synchronous belt 32. The second motor 34 drives the two synchronous belts 32 to rotate synchronously through the synchronous pulley 33, cooperating with the cylinder gripper 15 to accurately deliver the round tube.

[0045] When the round tube is hoisted by the feeding assembly 1 and transported to the processing station in conjunction with the discharging assembly 3, the bottom of both ends of the tube falls onto the rubber seat 35. At this time, the upper end face of the stop bar 31 is flush with the upper end face of the synchronous belt 32 and the rubber seat 35. Simultaneously, the position sensor 5 detects that the round tube has reached its position and transmits the signal to the PLC control system.

[0046] The PLC sequentially controls the fourth cylinder 24 to push the stop block 241 upward, blocking the round tube from the discharge side; controls the third cylinder 23 to drive the V-shaped groove at the bottom of the rubber block 231 to tightly press the top of the round tube. The rubber material and the V-shaped groove structure provide friction, which, in conjunction with the bottom rubber seat 35, completely restricts the radial movement and circumferential rotation of the round tube from both the top and bottom directions; controls the second cylinder 22 to drive the top block 221 to move towards the end of the round tube, and the pressure block 222 at its front end presses against the end face of the round tube to achieve axial positioning.

[0047] Next, the fifth cylinder 25 drives the punching cutter 251 to move upward, and punches the bottom sidewalls at both ends of the round tube simultaneously (it adopts a punching and drilling process, which does not generate dust when drilling the round tube).

[0048] After drilling is completed, the above steps are reset in the following order: the fifth cylinder 25 drives the punching cutter 251 to retract; then, the second cylinder 22 and the third cylinder 23 release the clamping and pressing of the round tube respectively; finally, the fourth cylinder 24 drives the stop block 241 to descend, and the processed round tube is conveyed out of the equipment under the drive of the synchronous belt 32. The whole process is controlled by PLC, realizing the full automation of round tube feeding, conveying, positioning, drilling and unloading.

[0049] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An automatic punching machine for circular pipes, comprising an outer frame (4), wherein a discharge assembly (3) is disposed inside the outer frame (4), characterized in that, The discharge assembly (3) is provided with a feeding assembly (1) above it. The outer frame (4) is provided with processing assemblies (2) on both sides near its discharge port. The processing assembly (2) intercepts the round tube and the hoisted round tube, and positions it in the radial and axial directions at the ends in sequence, while preventing it from rotating in the circumference. Finally, it drills holes in the side walls at both ends of the round tube.

2. The automatic drilling machine for circular pipelines according to claim 1, characterized in that, The processing component (2) includes a mounting bracket (21) fixedly mounted on an external frame (4), a position sensor (5) is mounted on one side of the mounting bracket (21); a fourth cylinder (24) is fixedly mounted on the bottom of the mounting bracket (21), the fourth cylinder (24) is located on the side close to the round tube, and the piston rod of the fourth cylinder (24) is set to face upward and a stop block (241) is fixedly mounted on it; A third cylinder (23) is fixedly installed above the mounting bracket (21). The piston rod of the third cylinder (23) is set to face downward and a rubber block (231) is fixedly installed. The rubber block (231) has an inverted V-shaped groove facing downward. The mounting bracket (21) is fixedly mounted on one side of the third cylinder (23) with the second cylinder (22) facing the end of the round tube and fixedly mounted with the top block (221). The top block (221) is fixedly mounted on the side of the round tube with the pressure block (222) matching the internal shape of the round tube. A fifth cylinder (25) is fixedly installed below the mounting bracket (21). The piston rod of the fifth cylinder (25) is set to face upward and a punch (251) is fixedly installed thereon.

3. An automatic drilling machine for circular pipelines according to claim 1, characterized in that, The discharge assembly (3) includes two baffles (31) fixedly installed on the outer frame (4), and rubber seats (35) are installed on the side wall of the baffles (31) near the processing position.

4. An automatic drilling machine for circular pipelines according to claim 3, characterized in that, Both ends of the two levers (31) are rotatably mounted with a pair of coaxially connected synchronous pulleys (33). The two pairs of synchronous pulleys (33) are connected to two synchronous belts (32) from both ends. A second motor (34) is fixedly mounted on one end of one synchronous pulley (33).

5. An automatic drilling machine for circular pipelines according to claim 1, characterized in that, The feeding assembly (1) includes a first motor (13) fixedly mounted on an outer frame (4). The shaft of the first motor (13) is connected to a screw (12). The screw (12) is connected to a movable seat (16) by a thread. The movable seat (16) has optical shafts (11) passing through its ends at both ends. Two first cylinders (14) are fixedly mounted on the bottom of the movable seat (16). Cylinder grippers (15) are connected below the first cylinders (14).

6. An automatic drilling machine for circular pipelines according to claim 2, characterized in that, The rubber block (231) is covered with a protective sleeve (232).

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