Pre-drilling equipment for internal high-pressure formed pipe fitting

By designing an inclined pre-drilling platform and sliding frame system in the processing of internal high-pressure forming pipe fittings, the extrusion ring and rubber pads are used to fix and push the pipe fittings, the problems of unfixed and complicated operation of the pipe fittings during the drilling process are solved, and the processing stability is improved and simplicity of the process.

CN222199718UActive Publication Date: 2024-12-20NANJING HUAMAI AUTOMOTIVE PARTS MFG CO LTD
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Patent Information

Application Number
CN202421042559.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-13
Publication Date
2024-12-20
Estimated Expiration
2034-05-13

AI Technical Summary

Technical Problem

During the processing of internal high-pressure forming pipe fittings, the pipe fittings cannot be fixed during drilling, resulting in rotation affecting the drilling effect. The pushing process after drilling is cumbersome, which increases the operational complexity.

Method used

A pre-drilling equipment is designed, including a pre-drilling platform with an inclined configuration, equipped with a material stop frame, a sliding frame, an extrusion ring and a rubber pad. The sliding frame is driven by a motor to tilt and slide to fix and push the pipe fittings, using an extrusion ring Perform first extrusion and then thrust operation with the rubber pad to ensure stable fixation and smooth movement of the pipe fittings.

Benefits of technology

It improves the stability and simplicity of drilling, reduces the movement stroke of the drill bit, and simplifies the processing flow of pipe fittings.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses pre-drilling equipment for internal high-pressure formed pipe fittings, which comprises a pre-drilling platform, the pre-drilling platform is obliquely arranged, one end of the pre-drilling platform is fixedly provided with a material blocking frame, one side of one end, close to the material blocking frame, of the pre-drilling platform is rotatably provided with a baffle through a hinge, and the other end of the pre-drilling platform is fixedly provided with a hydraulic cylinder. The sliding frame is driven to obliquely slide and descend along the guide rail through operation of the motor, the extrusion ring and the rubber pad make contact with and extrude the pipe fitting in sequence, the position of the pipe fitting can be fixed, the pre-drilling stability of the drilling assembly on the pipe fitting is improved, abutting of a baffle on the pipe fitting is omitted, and the drilling efficiency is improved. And then a motor operates to drive a sliding frame to obliquely slide and rise along a guide rail, a rubber pad cancels contact extrusion on the pipe fitting, due to the fact that no baffle abuts against the pipe fitting, an extrusion ring instantly generates thrust on the pipe fitting through pulling of a first reset spring on a sliding block, and the pipe fitting is driven to move to the next machining platform.
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Description

Technical Field

[0001] The utility model relates to the technical field of internal high pressure forming pipe fitting processing, in particular to a pre-drilling device for internal high pressure forming pipe fittings. Background Art

[0002] Internal high pressure forming, also known as hydraulic forming or hydroforming, is a material forming process that uses liquid as a forming medium and controls internal pressure and material flow to achieve the purpose of forming hollow parts. During the processing of internal high pressure forming pipe fittings, they need to be heated in a heating furnace, and then a center hole needs to be punched to improve the quality of the finished product.

[0003] In the "Heating and Drilling of Internal High-Pressure Formed Pipe Fittings" with the authorization announcement number "CN207533996U", the pre-drilling device is arranged between the heating furnace and the drilling station, and the pipe fittings heated by the heating furnace are transported to the screening platform, which is inclined, and a pushing cylinder is provided on one side of the end of the screening platform. The pushing cylinder pushes the last pipe fitting on the screening platform onto the feeding track, and the feeding track transports the pipe fittings to the pre-drilling platform, which is inclined, and a baffle plate is provided at the end of the pre-drilling platform, and a pre-drilling device is fixed on one side of the baffle plate. The pre-drilling device includes The drill rod has two ends connected with the drill bit and the oil cylinder respectively. The drill bit is aimed at the pipe end next to the baffle plate, and the pipe is transported to the pre-drilling platform through the feeding track. Then, a blind hole can be pre-drilled at the pipe end through the drill bit, which is used as a positioning hole for drilling the center hole. However, during the drilling process, the pipe is not fixed, and the pipe will be driven to rotate when drilling, affecting the drilling effect. At the same time, when the pre-drilling is completed, the pipe is pushed to the rotating platform next to the drilling platform through the pre-drilling device, and the pipe is pushed by the drill bit, which increases the moving stroke of the drill bit and the operation is more cumbersome. Utility Model Content

[0004] The utility model aims to provide a pre-drilling device for internal high pressure forming pipe fittings to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pre-drilling device for internal high-pressure forming pipe fittings, comprising a pre-drilling platform, the pre-drilling platform is inclined, a material stop frame is fixedly installed on one end of the pre-drilling platform, a baffle is rotatably installed on one side of the end of the pre-drilling platform close to the material stop frame through a hinge, a drilling assembly is installed on the side of the end of the pre-drilling platform close to the material stop frame away from the baffle, a sliding frame is slidably installed on the inner side of the material stop frame, the sliding frame slides at an angle, an extrusion ring for pre-extruding the pipe fitting is slidably installed on one end of the bottom of the sliding frame, and a rubber pad for post-extrusion and fixing the pipe fitting is fixedly installed on the other end of the bottom of the sliding frame.

[0006] As a further preferred embodiment of the present technical solution, an electric push rod is rotatably mounted on the outer side of the material blocking rack via an axle pin, and the moving end of the electric push rod is rotatably connected to one side of the baffle via the axle pin.

[0007] As a further preferred embodiment of the present technical solution, a motor is fixedly installed on the top of the material stopping frame, a turntable is fixedly installed on the output end of the motor, a connecting rod is eccentrically installed on one side of the turntable through an axle pin, and the end of the connecting rod away from the turntable is rotatably connected to the top of the sliding frame through an axle pin, and a guide rail is fixedly installed on the inner side of the material stopping frame, and the guide rail is slidably connected to the sliding frame.

[0008] As a further preferred embodiment of the present technical solution, a sliding groove is provided at one end of the sliding frame, a sliding block is slidably installed inside the sliding groove, a first limiting hole is provided in the middle of the sliding block, a first limiting rod is fixedly installed at the position of the sliding frame corresponding to the first limiting hole, the first limiting rod is slidably connected to the first limiting hole, a first return spring is sleeved on the outer side of the first limiting rod, one end of the first return spring is fixedly connected to one end of the sliding block, and the other end of the first return spring is fixedly connected to the sliding frame, a second limiting hole is symmetrically provided in the middle portion of the first limiting hole, a second limiting rod is slidably installed inside the second limiting hole, the bottoms of the two second limiting rods are fixedly connected to the extrusion ring, a second return spring is sleeved on the outer side of the top end of the second limiting rod, one end of the second return spring is fixedly connected to the top of the second limiting rod, and the other end of the second return spring is fixedly connected to the top of the sliding block.

[0009] As a further preferred embodiment of the present technical solution, an arc groove for limiting the position of the pipe is provided on the inner side of the bottom end of the material blocking rack.

[0010] As a further preferred embodiment of the present technical solution, a stopper rod for preventing the pipe from falling off is symmetrically fixedly installed on the top of the pre-drilling platform.

[0011] The utility model provides a pre-drilling device for internal high pressure forming pipe fittings, which has the following beneficial effects:

[0012] (1) The pipe in the utility model will be moved to the position of the material stop rack by the action of gravity, the baffle will abut against one end of the pipe, and the motor will drive the sliding rack to slide down along the guide rail. The extrusion ring and the rubber pad will contact and extrude the pipe in turn, which can fix the position of the pipe and improve the stability of the drilling assembly in pre-drilling the pipe.

[0013] (2) The utility model eliminates the pressure of the baffle plate on the pipe fitting, and then drives the sliding frame to slide and rise along the guide rail through the operation of the motor. The rubber pad will eliminate the contact and extrusion of the pipe fitting. Since there is no pressure of the baffle plate on the pipe fitting, the first return spring pulls the slider, and the extrusion ring will instantly generate a thrust on the pipe fitting, which will drive the pipe fitting to move to the next processing platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is one of the overall structural diagrams of the utility model;

[0015] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the overall explosion structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the partial explosion structure of the utility model;

[0018] In the figure: 1. pre-drilling platform; 2. material stop frame; 3. baffle; 4. drilling assembly; 5. sliding frame; 6. extrusion ring; 7. rubber pad; 8. electric push rod; 9. motor; 10. turntable; 11. connecting rod; 12. guide rail; 13. slide groove; 14. slider; 15. first limit hole; 16. first limit rod; 17. first return spring; 18. second limit hole; 19. second limit rod; 20. second return spring; 21. arc groove; 22. gear lever. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] The utility model provides a technical solution: Figures 1 to 4 As shown, in the present embodiment, a pre-drilling device for internal high-pressure forming pipe fittings comprises a pre-drilling platform 1, which is arranged at an angle, and a material stop frame 2 is fixedly installed at one end of the pre-drilling platform 1, and a baffle 3 is rotatably installed on one side of the end of the pre-drilling platform 1 close to the material stop frame 2, and a drilling assembly 4 is installed on the side of the end of the pre-drilling platform 1 close to the material stop frame 2 away from the baffle 3, a sliding frame 5 is slidably installed on the inner side of the material stop frame 2, and the sliding frame 5 slides at an angle, and an extrusion ring 6 for pre-extruding the pipe fitting is slidably installed at one end of the bottom of the sliding frame 5, and a rubber pad 7 for post-extrusion and fixing the pipe fitting is fixedly installed at the other end of the bottom of the sliding frame 5.

[0021] like Figures 1 to 4 As shown, an electric push rod 8 is rotatably mounted on the outer side of the material blocking rack 2 via an axle pin, and the moving end of the electric push rod 8 is rotatably connected to one side of the baffle 3 via an axle pin.

[0022] The baffle plate 3 is driven to rotate by the operation of the electric push rod 8 to realize whether the baffle plate 3 presses against the pipe fitting.

[0023] like Figures 1 to 4As shown, a motor 9 is fixedly installed on the top of the material stopping frame 2, a turntable 10 is fixedly installed on the output end of the motor 9, a connecting rod 11 is eccentrically installed on one side of the turntable 10 through an axle pin, and the end of the connecting rod 11 away from the turntable 10 is rotatably connected to the top of the sliding frame 5 through an axle pin, and a guide rail 12 is fixedly installed on the inner side of the material stopping frame 2, and the guide rail 12 is slidably connected to the sliding frame 5.

[0024] The motor 9 drives the turntable 10 to rotate, and the rotation of the turntable 10 drives the sliding frame 5 to slide down along the guide rail 12 through the connection of the connecting rod 11, so as to fix the extrusion ring 6 and the rubber pad 7 to the pipe fitting.

[0025] like Figures 1 to 4 As shown, a slide groove 13 is provided at one end of the sliding frame 5, and a slider 14 is slidably installed inside the slide groove 13. A first limiting hole 15 is provided in the middle of the slider 14. A first limiting rod 16 is fixedly installed at the position of the sliding frame 5 corresponding to the first limiting hole 15. The first limiting rod 16 is slidably connected to the first limiting hole 15. A first return spring 17 is sleeved on the outer side of the first limiting rod 16. One end of the first return spring 17 is fixedly connected to one end of the slider 14, and the other end of the first return spring 17 is fixedly connected to the sliding frame 5. A second limiting hole 18 is symmetrically provided in the middle part of the first limiting hole 15. A second limiting rod 19 is slidably installed inside the second limiting hole 18. The bottoms of the two second limiting rods 19 are fixedly connected to the extrusion ring 6. A second return spring 20 is sleeved on the outer side of the top end of the second limiting rod 19. One end of the second return spring 20 is fixedly connected to the top of the second limiting rod 19, and the other end of the second return spring 20 is fixedly connected to the top of the slider 14.

[0026] When the sliding frame 5 descends, the extrusion ring 6 will first contact and extrude the pipe fitting. As the sliding frame 5 continues to descend, the slider 14 connected to the extrusion ring 6 will slide inside the slide groove 13, and then the rubber pad 7 will contact and extrude the pipe fitting and finally fix the position of the pipe fitting. At this time, the first return spring 17 and the second return spring 20 are both in an elongated state. After the drilling is completed, the operation of the motor 9 drives the sliding frame 5 to slide up along the guide rail 12, and the rubber pad 7 will cancel the contact and extrusion of the pipe fitting. Through the pulling of the slider 14 by the first return spring 17, the extrusion ring 6 will instantly generate a thrust on the pipe fitting, which will drive the pipe fitting to move to the next processing platform to facilitate the unloading of the pipe fitting.

[0027] like Figures 1 to 4 As shown, a circular arc groove 21 for limiting the position of the pipe is provided on the inner side of the bottom end of the material blocking frame 2.

[0028] The pipe can be positioned inside the circular arc groove 21 .

[0029] like Figures 1 to 4As shown, a stopper rod 22 for preventing the pipe from falling off is symmetrically fixedly installed on the top of the pre-drilling platform 1.

[0030] Prevent the pipe from slipping out of the pre-drilled platform 1.

[0031] The utility model provides a pre-drilling device for internal high pressure forming pipe fittings, and the specific working principle is as follows:

[0032] When the device is in use, the pipes heated by the heating furnace are transported to the pre-drilling platform 1, and the pipes will move to the position of the material stopper 2 by the action of gravity, and the baffle 3 will abut against one end of the pipes, and the operation of the motor 9 will drive the turntable 10 to rotate. The rotation of the turntable 10 will drive the sliding frame 5 to slide and descend along the guide rail 12 through the connection of the connecting rod 11. When the sliding frame 5 descends, the extrusion ring 6 will first contact and extrude the pipes, and the extrusion ring 6 will fix the position of the pipes. As the sliding frame 5 continues to descend, the slider 14 connected to the extrusion ring 6 will slide inside the slide groove 13, and at the same time, the extrusion ring 6 will slide relative to the slider 14, and at this time the first return spring 17 and the second return spring The springs 20 are all in an elongated state until the rubber pads 7 contact and squeeze the pipe fittings and finally fix the position of the pipe fittings. The pipe fittings are pre-drilled by the drilling assembly 4. After the drilling is completed, the baffle 3 is driven to rotate by the electric push rod 8 to cancel the pressure of the baffle 3 on the pipe fittings. Then, the turntable 10 is driven to rotate continuously by the operation of the motor 9. The sliding frame 5 is driven to slide and rise along the guide rail 12 through the connection of the connecting rod 11. The rubber pads 7 will cancel the contact and squeezing of the pipe fittings. Since there is no pressure of the baffle 3 on the pipe fittings, the first return spring 17 pulls the slider 14, and the extrusion ring 6 will instantly generate a thrust on the pipe fittings, which will drive the pipe fittings to move to the next processing platform.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-drilling device for internal high-pressure forming pipe fittings, comprising a pre-drilling platform (1), the pre-drilling platform (1) is arranged in an inclined manner, a material stop frame (2) is fixedly installed on one end of the pre-drilling platform (1), a baffle (3) is rotatably installed on one side of the end of the pre-drilling platform (1) close to the material stop frame (2) through a hinge, and a drilling assembly (4) is installed on the side of the end of the pre-drilling platform (1) close to the material stop frame (2) away from the baffle (3), characterized in that: A sliding frame (5) is slidably mounted on the inner side of the material blocking frame (2), and the sliding frame (5) slides in an inclined manner. An extrusion ring (6) for pre-extruding the pipe fitting is slidably mounted on one end of the bottom of the sliding frame (5), and a rubber pad (7) for post-extruding and fixing the pipe fitting is fixedly mounted on the other end of the bottom of the sliding frame (5).

2. The pre-drilling device for high pressure forming pipe fittings according to claim 1, characterized in that: An electric push rod (8) is rotatably mounted on the outer side of the material blocking frame (2) via an axle pin, and the movable end of the electric push rod (8) is rotatably connected to one side of the baffle plate (3) via the axle pin.

3. The pre-drilling device for high pressure forming pipe fittings according to claim 2, characterized in that: A motor (9) is fixedly mounted on the top of the material blocking frame (2), a turntable (10) is fixedly mounted on the output end of the motor (9), a connecting rod (11) is eccentrically rotatably mounted on one side of the turntable (10) via an axle pin, an end of the connecting rod (11) away from the turntable (10) is rotatably connected to the top of the sliding frame (5) via an axle pin, a guide rail (12) is fixedly mounted on the inner side of the material blocking frame (2), and the guide rail (12) is slidably connected to the sliding frame (5).

4. The pre-drilling device for high pressure forming pipe fittings according to claim 1, characterized in that: A slide groove (13) is provided at one end of the sliding frame (5), a slider (14) is slidably installed inside the slide groove (13), a first limiting hole (15) is provided in the middle of the slider (14), a first limiting rod (16) is fixedly installed at a position of the sliding frame (5) corresponding to the first limiting hole (15), the first limiting rod (16) is slidably connected to the first limiting hole (15), a first return spring (17) is sleeved on the outer side of the first limiting rod (16), one end of the first return spring (17) is fixedly connected to one end of the slider (14), and the first return spring (17) is fixedly connected to one end of the slider (14). ) is fixedly connected to the sliding frame (5), a second limiting hole (18) is symmetrically opened in the middle of the first limiting hole (15), a second limiting rod (19) is slidably installed inside the second limiting hole (18), the bottoms of the two second limiting rods (19) are fixedly connected to the extrusion ring (6), a second return spring (20) is sleeved on the outer side of the top end of the second limiting rod (19), one end of the second return spring (20) is fixedly connected to the top of the second limiting rod (19), and the other end of the second return spring (20) is fixedly connected to the top of the slider (14).

5. The pre-drilling device for high pressure forming pipe fittings according to claim 1, characterized in that: The inner side of the bottom end of the material blocking frame (2) is provided with an arc groove (21) for limiting the position of the pipe.

6. The pre-drilling device for high pressure forming pipe according to claim 1, characterized in that: A stopper rod (22) for preventing the pipe from falling off is symmetrically fixedly mounted on the top of the pre-drilling platform (1).