Production equipment for square tube round hole forming

Abstract

The production equipment for square tube round hole forming comprises a blanking device, a feeding box, a pushing device and a square tube discharging device, when a positioning channel positions a square tube, a supporting block penetrates through the other end opening of the positioning channel and is arranged in an inner hole of the square tube, so that at least part of the peripheral side of the supporting block is in contact with the inner wall of the inner hole of the square tube, and the square tube is positioned through the square tube discharging device. The round through hole in the supporting block, the round through holes in the blanking female die and the round through hole in the lower die are coaxial, and then the blanking male die moves downwards to conduct blanking on the square pipe to form a round hole. A to-be-machined square tube can be clamped and placed in a placing cavity of a feeding box by adopting a handheld long clamping tool, then the square tube in the placing cavity is pushed into a positioning channel by utilizing the movement of a material pushing block, so that a station hand part is prevented from being positioned below an upper die, safety accidents are avoided, meanwhile, the clamping action is automatic work clamping, and the working efficiency is greatly improved. The working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of round hole forming on metal parts, in particular to production equipment for round hole forming on square tubes. Background Art

[0002] A circular hole is punched out on a metal square tube so that the circular hole can be docked with a corresponding circular accessory. During stamping, a clamp that needs to be manually unlocked or manually locked is set below the stamping punch, generally a bench vise, and then the square tube is clamped and locked. Since this method requires a long time to clamp and unlock the square tube, the punching processing efficiency is low, and it is also easy to cause a safety accident during manual clamping or unlocking due to misoperation. Therefore, there is an urgent need for a production equipment for square tube circular hole forming that can solve the above technical problems. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the above-mentioned technology and to design a square tube round hole forming production equipment, the specific method is as follows.

[0004] The utility model is designed to produce a square tube round hole forming production equipment, comprising:

[0005] A punching device, comprising a punching hydraulic cylinder and a punching die, wherein the punching die comprises an upper die and a lower die which are distributed up and down, wherein a cylindrical punch for forming a circular hole is installed on the bottom surface of the upper die, and a punching die corresponding to the position of the cylindrical punch is installed on the top surface of the lower die, wherein a positioning channel adapted to the outer shape of the positioning square tube and circular through holes which are respectively located at the upper and lower sides of the positioning channel and are coaxially arranged are arranged on the punching die; a telescopic rod of the punching hydraulic cylinder is connected to the upper die, and each circular through hole is coaxially arranged with the cylindrical punch;

[0006] A loading box, the loading box is located at one end of the positioning channel, the loading box is provided with a placement cavity adapted to the square tube, and square holes respectively located at the left and right ends of the placement cavity, the two square holes are located correspondingly and coaxially, and the shape and size of the square holes are the same as those of the positioning channel;

[0007] A material pushing device, comprising a material pushing block and a first telescopic mechanism, wherein the material pushing block is located at the square hole outside the loading box, and a telescopic rod of the first telescopic mechanism is connected to the material pushing block;

[0008] A square tube unloading device, comprising a support block adapted to the inner hole of the square tube, a second telescopic mechanism and a sliding drive mechanism, a telescopic rod and a support block of the second telescopic mechanism, and the second telescopic mechanism is installed on a slider of the sliding drive mechanism;

[0009] Wherein, when the positioning channel positions the square pipe, the support block penetrates into the square pipe from the other port of the positioning channel and is placed in the inner hole of the square pipe, so that at least part of the outer peripheral side of the support block contacts the inner wall of the inner hole of the square pipe, and the circular through holes on the support block, the circular through holes on the blanking female die and the circular through hole of the lower die are coaxial. A collection box is arranged below the circular through hole of the lower die.

[0010] Further preferably, the support block has a stepped structure, so that the support block has a support section, a first limiting section and a second limiting section. The outer peripheral side of the support section contacts the inner wall of the inner hole of the square pipe, the end face of the first limiting section abuts against the end face of the square pipe, and the end face of the second limiting section abuts against the end face of the blanking female die.

[0011] Further preferably, the support block further has a friction sleeve wrapped around the outer peripheral side of the support section. When the support section is placed in the inner hole of the square pipe, the outer peripheral side of the friction sleeve abuts against the inner wall of the inner hole of the square pipe, and the circular through holes on the upper and lower sides of the friction sleeve are coaxially arranged with the circular through hole on the support section.

[0012] Further preferably, it further includes a frame. The lower die is fixed on the table board of the frame, the blanking hydraulic cylinder is installed on the frame body of the frame, and the circular through hole on the table board of the frame is coaxially arranged with the circular through hole of the lower die.

[0013] Further preferably, a support plate is fixed between two support columns below the lower die on the frame, and the collection box is placed on the support plate.

[0014] Further preferably, the feeding box includes a frame body with a "U" - shaped cross - section and side plates respectively fixed at both ends of the frame body. Two square holes are respectively formed on the two side plates.

[0015] The production equipment for forming round holes in square pipes designed by the utility model has the following beneficial effects:

[0016] 1. A long - shaped clamping tool can be used to clamp and place the square pipe to be processed into the placement cavity of the feeding box, and then the square pipe in the placement cavity is pushed into the positioning channel by the movement of the pushing block, so as to avoid the working position hand being located below the upper die, thus avoiding safety accidents.

[0017] 2. When positioning the square pipe, the square pipe in the placement cavity is pushed into the positioning channel by the movement of the pushing block, and then the support block displaces relative to the pushing block, so that the support section is located inside the square pipe, and the end faces of the first limiting section and the second limiting section respectively abut against the end face of the square pipe and the end face of the blanking female die, so as to complete the automatic clamping and positioning of the square pipe. This operation does not require manual labor, and both the first telescopic mechanism and the second telescopic mechanism adopt cylinders, so as to increase the speed of clamping the square pipe, thereby improving the working efficiency. Description of the Drawings

[0018] Figure 1It is a schematic diagram of the overall structure (I);

[0019] Figure 2 It is a schematic diagram of the blanking die structure (I);

[0020] Figure 3 It is a schematic diagram of the blanking die structure (II);

[0021] Figure 4 It is a schematic diagram of the blanking die structure (III);

[0022] Figure 5 It is a schematic diagram of the overall structure (II);

[0023] Figure 6 It is a schematic diagram of the structure of the support block;

[0024] Figure 7 It is Figure 1 The enlarged view in.

[0025] In the figure, 1 is the frame; 10 is the circular through-hole; 11 is the platen; 12 is the frame body; 13 is the support column; 14 is the support plate; 15 is the collection box; 2 is the blanking device; 21 is the blanking hydraulic cylinder; 22 is the upper die; 221 is the cylindrical punch; 222 is the guide sleeve; 23 is the lower die; 231 is the blanking die; 232 is the guide post; 233 is the positioning channel; 3 is the material pushing device; 31 is the feeding box; 310 is the placement cavity; 311 is the side plate; 312 is the frame; 313 is the square hole; 32 is the material pushing block; 33 is the first telescopic mechanism; 4 is the square pipe blanking device; 41 is the support block; 411 is the support section; 412 is the friction sleeve; 413 is the first limiting section; 414 is the second limiting section; 42 is the second telescopic mechanism; 43 is the sliding driving mechanism. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0027] Embodiment:

[0028] As Figures 1-7 shown, a production device for forming round holes in square pipes described in this embodiment includes a frame 1, a blanking device 2, a feeding box 31, a material pushing device 3, and a square pipe blanking device 4.

[0029] The blanking device 2 includes a blanking hydraulic cylinder 21 and a blanking die. The blanking die includes an upper die 22 and a lower die 23 which are distributed vertically. A cylindrical punch 221 for circular hole forming is installed on the bottom surface of the upper die 22. A blanking die cavity 231 corresponding to the position of the cylindrical punch 221 is installed on the top surface of the lower die 23. A positioning channel 233 adapted to the outer shape of the positioning square tube and circular through holes 10 which are coaxially arranged on the upper and lower sides of the positioning channel 233 respectively are provided on the blanking die cavity 231. The telescopic rod of the blanking hydraulic cylinder 21 is connected to the upper die 22. Each circular through hole 10 is coaxially arranged with the cylindrical punch 221. The lower die 23 is fixed on the table plate 11 of the frame 1. The blanking hydraulic cylinder 21 is installed on the frame body 12 of the frame 1. The circular through holes 10 on the table plate 11 of the frame 1 are coaxially arranged with the circular through holes 10 of the lower die 23.

[0030] Further, a support plate 14 is fixed between two support columns 13 below the lower die 23 on the frame 1. A collection box 15 is placed on the support plate 14, and the collection box 15 is located below the circular through hole 10 of the lower die 23, and can collect the circular pieces punched down due to the formed circular holes on the square tube.

[0031] The feeding box 31 is located at one port of the positioning channel 233. The feeding box 31 is provided with a placement cavity 310 adapted to the square tube and square holes 313 respectively located at the left and right ends of the placement cavity 310. The two square holes 313 are in corresponding positions and coaxially arranged. The shape and size of the square holes 313 are the same as the shape and size of the positioning channel 233. The feeding box 31 includes a frame body 312 with a cross-section in a "U" shape and side plates 311 respectively fixed at both ends of the frame body 312. The two square holes 313 are respectively formed on the two side plates 311. The side plates 311 and the frame body 312 can be fixed by welding or bolts. The square frame body 312 and the bottom plate are both made of metal materials.

[0032] The pushing device 3 includes a pushing block 32 and a first telescopic mechanism 33. The pushing block 32 is located at the square hole 313 outside the feeding box 31. The telescopic rod of the first telescopic mechanism 33 is connected to the pushing block 32. The first telescopic mechanism 33 preferably uses a cylinder, and the first telescopic mechanism 33 is installed on the table plate 11 of the frame 1 through a bracket.

[0033] The square pipe blanking device 4 includes a support block 41 adapted to the inner hole of the square pipe, a second telescopic mechanism 42, and a sliding drive mechanism 43. The telescopic rod of the second telescopic mechanism 42 is connected to the support block 41, and the second telescopic mechanism 42 is installed on the slider of the sliding drive mechanism 43. The second telescopic mechanism 42 preferably uses a cylinder, and the second telescopic mechanism 42 is installed on the table 11 of the frame 1 through a bracket. The support block 41 has a stepped structure, so that the support block 41 has a support section 411, a first limiting section 413, and a second limiting section 414. The support block 41 also has a friction sleeve 412 wrapped around the outer peripheral side of the support section 411. The circular through holes 10 on the upper and lower sides of the friction sleeve 412 are coaxially arranged with the circular through holes 10 on the support section 411. The shape of the support section 411 and the friction sleeve 412 combined is adapted to the inner hole of the square pipe. The sliding drive mechanism 43 uses a servo sliding table.

[0034] In this embodiment, an operator uses a long clamping tool to pick up the square pipe 100 from the material box and place it into the placement cavity 310. Then, the first telescopic mechanism 33 and the second telescopic mechanism 42 respectively push the pusher block 32 and the support block 41 to displace towards the blanking concave die 231, so as to push the square pipe in the placement cavity 310 into the positioning channel 233. At the same time, the support section 411 of the support block 41 penetrates from the other port of the positioning channel 233 and is placed in the inner hole of the square pipe, so that the outer peripheral side of the friction sleeve 412 on the support section 411 abuts against the inner wall of the inner hole of the square pipe 100, and the end face of the first limiting section 413 abuts against one end face of the square pipe, and the end face of the second limiting section 414 abuts against the end face of the blanking concave die 231. Moreover, the pusher block 32 always abuts against the other end face of the square pipe 100 to form clamping of the square pipe. At this time, the circular through holes 10 on the support block 41, the circular through holes 10 on the blanking concave die 231, and the circular through holes 10 on the lower die 23 are coaxial. Finally, the blanking hydraulic cylinder 21 works to drive the cylindrical punch 221 to move downward to punch circular holes in the square pipe 100, and the punching waste falls into the collection box 15 through the circular through holes 10. After the processing is completed, all components are reset. When the support block 41 is reset, due to the large friction force between the friction sleeve 412 and the square pipe, the processed square pipe 100 is removed from the positioning channel 233, and then the sliding drive mechanism 43 is used to displace the second telescopic mechanism 42 to the end of the sliding drive mechanism 43, so as to facilitate the operator to remove the square pipe on the support block 41 for blanking.

[0035] Preferably, the pusher block 32 has a sleeve structure, so that the shape and size of the ring body on the pusher block 32 are the same as those of the square frame.

[0036] Preferably, a guide sleeve 222 is fixed to the bottom surface of the upper die, and a guide post 232 is fixed to the top surface of the lower die. When the upper die and the lower die approach each other, the guide post 232 is inserted into the guide sleeve 222, so that the upper die and the lower die are linearly guided and displaced.

Claims

1. A production equipment for forming round holes in square tubes, characterized in that: include: A punching device (2) comprises a punching hydraulic cylinder (21) and a punching die, wherein the punching die comprises an upper die (22) and a lower die (23) which are arranged in an upper and lower manner, the bottom surface of the upper die (22) being provided with a cylindrical punch (221) for forming a circular hole, the top surface of the lower die (23) being provided with a punching die (231) corresponding to the position of the cylindrical punch (221), the punching die (231) being provided with a positioning channel (233) adapted to the outer shape of a positioning square tube, and circular through holes (10) which are respectively located on the upper and lower sides of the positioning channel (233) and are coaxially arranged, the telescopic rod of the punching hydraulic cylinder (21) being connected to the upper die (22), and each circular through hole (10) being coaxially arranged with the cylindrical punch (221); A loading box (31), the loading box (31) is located at one end of the positioning channel (233), the loading box (31) is provided with a placement cavity (310) adapted to the square tube, and square holes (313) respectively located at the left and right ends of the placement cavity (310), the two square holes (313) are located in corresponding positions and are coaxially arranged, and the shape and size of the square hole (313) are the same as those of the positioning channel (233); A material pushing device (3), comprising a material pushing block (32) and a first telescopic mechanism (33), wherein the material pushing block (32) is located at a square hole (313) outside the material loading box (31), and a telescopic rod of the first telescopic mechanism (33) is connected to the material pushing block (32); A square tube feeding device (4), comprising a support block (41) adapted to the inner hole of the square tube, a second telescopic mechanism (42) and a sliding drive mechanism (43), a telescopic rod of the second telescopic mechanism (42) and the support block (41), and the second telescopic mechanism (42) is mounted on a slider of the sliding drive mechanism (43); When the positioning channel (233) positions the square tube, the support block (41) is inserted from the other end of the positioning channel (233) and placed in the inner hole of the square tube, so that at least part of the outer peripheral side of the support block (41) contacts the inner wall of the inner hole of the square tube, and the circular through hole (10) on the support block (41), each circular through hole (10) on the punching die (231) and the circular through hole (10) of the lower die (23) are coaxial, and a collection box (15) is arranged below the circular through hole (10) of the lower die (23).

2. A production equipment for forming round holes in square tubes according to claim 1, characterized in that: The support block (41) is in a stepped structure, so that the support block (41) has a support section (411), a first limiting section (413) and a second limiting section (414); the outer peripheral side of the support section (411) contacts the inner wall of the inner hole of the square tube, the end face of the first limiting section (413) abuts against the end face of the square tube, and the end face of the second limiting section (414) abuts against the end face of the punching die (231).

3. A production equipment for forming round holes in square tubes according to claim 2, characterized in that: The support block (41) further has a friction sleeve (412) wrapped around the outer peripheral side of the support section (411). When the support section (411) is placed in the inner hole of the square tube, the outer peripheral side of the friction sleeve (412) abuts against the inner wall of the inner hole of the square tube, and the circular through holes (10) on the upper and lower sides of the friction sleeve (412) are coaxially arranged with the circular through holes (10) on the support section (411).

4. The production equipment for forming round holes in square tubes according to claim 3, characterized in that: It further includes a frame (1), the lower die (23) is fixed on the table board (11) of the frame (1), the blanking hydraulic cylinder (21) is installed on the frame body (12) of the frame (1), and the circular through holes (10) on the table board (11) of the frame (1) are coaxially arranged with the circular through holes (10) of the lower die (23).

5. The production equipment for forming round holes in square tubes according to claim 4, characterized in that: A support plate (14) is fixed between two support columns (13) below the lower die (23) on the frame (1), and a collection box (15) is placed on the support plate (14).

6. The production equipment for forming round holes in square tubes according to claim 5, characterized in that: The feeding box (31) includes a frame body (312) with a "凵"-shaped cross-section and side plates (311) respectively fixed at both ends of the frame body (312), and two square holes (313) are respectively formed on the two side plates (311).

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