Machining device for bushing outer pipe

Abstract

The utility model discloses a bushing outer pipe machining device, and relates to the technical field of bushing outer pipe machining, the bushing outer pipe machining device comprises a punching machine body, a workbench located on the punching machine body, a sliding block arranged below the punching machine body, and a first fixing base, a second fixing base and a third fixing base which are arranged above the workbench and used for containing to-be-machined pipe fittings; fixing columns attached to the inner side wall of a to-be-machined pipe fitting are arranged above the three fixing bases, a first punching base, a second punching base and a third punching base which correspond to the first fixing base, the second fixing base and the third fixing base respectively are arranged below the sliding block, a forming groove is formed below the first punching base, and a flattening punch is arranged below the second punching base. A cutting punch is arranged below the third punching base. The first stamping seat is used for stamping and necking a pipe fitting, the second stamping seat is used for flattening the necking, then the pipe fitting is placed on the third fixing seat, the cutting punch is used for blanking the necking, the sliding block drives the three stamping seats to press downwards, machining of different working procedures of the lining outer pipe can be completed, and the machining efficiency of the lining outer pipe is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the bushing outer tube processing technical field, in particular to a bushing outer tube processing device. BACKGROUND

[0002] Punching production can make blanking, punching, forming, drawing, trimming, fine punching, shaping, riveting and extrusion parts and the like through a die, and is widely applied to various fields. At present, bushing outer tube production is mostly processed and produced by punching equipment.

[0003] When the bushing outer tube is processed, a puncher is used to first punch and form the necking of the pipe fitting, then the necking of the pipe fitting is punched and flattened, and then the necking of the bushing outer tube is cut, so that the size of the bushing outer tube is uniform, and the processing of the bushing outer tube is completed.

[0004] According to the related technology in the above, the inventors consider that most of the existing punchers are single-mold structures, different molds need to be used for processing the bushing outer tube, and multiple punchers need to be used, so that the cost is large. CONTENT OF THE UTILITY MODEL

[0005] The application aims to provide a bushing outer tube processing device to improve the problem that most of the existing punchers are single-mold structures, different molds need to be used for processing the bushing outer tube, multiple punchers need to be used, so that the cost is large and the processing efficiency is low.

[0006] The bushing outer tube processing device provided by the application adopts the following technical scheme:

[0007] The bushing outer tube processing device comprises a puncher body, a workbench located on the puncher body, a sliding block located on the puncher body and above the workbench, a first fixing seat, a second fixing seat and a third fixing seat for placing pipe fittings to be processed are arranged above the workbench, fixing columns are arranged above the first fixing seat, the second fixing seat and the third fixing seat and are in close contact with the inner side walls of the pipe fittings to be processed, puncher seats one, two and three corresponding to the first fixing seat, the second fixing seat and the third fixing seat are arranged below the sliding block, forming grooves corresponding to the pipe fittings are arranged below the puncher seats one, two and three, a flattening punch corresponding to the necking of the pipe fitting is arranged below the puncher seat two, and a cutting punch corresponding to the necking of the pipe fitting is arranged below the puncher seat three.

[0008] By adopting the technical scheme, the pipe is placed on the fixed seat two, the pipe is pressed by the flattening punch of the stamping seat two to flatten the necking of the pipe, the pipe is placed on the fixed seat three, the necking of the pipe is punched by the cutting punch on the stamping seat three to ensure that the size is relatively uniform, the slider of the stamping machine body drives the three stamping seats to press downward to press the pipe with different processing degrees on the three fixed seats, the processing of different processes of the bushing outer pipe can be completed, and the processing efficiency of the bushing outer pipe is improved.

[0009] Optionally, an arc surface corresponding to the pipe opening is arranged on the inner side wall of the forming groove of the stamping seat one, and the stamping seat one is provided with a positioning column corresponding to the pipe on the inner side wall of the forming groove.

[0010] By adopting the technical scheme, the pipe opening of the pipe is extruded along the arc surface to form the necking during stamping, the positioning column of the inner side wall of the forming groove of the stamping seat one passes through the pipe and abuts against the fixing column when the stamping seat one moves downward, the pipe abuts against the circumferential side wall of the positioning column during necking, the necking of the pipe is blocked, and the possibility of cracking of the pipe due to excessive necking is reduced.

[0011] Optionally, a limiting groove is arranged below the stamping seat two, the flattening punch is arranged to slide in the up-down direction of the limiting groove, a connecting rod moving in the length direction of the stamping seat two is arranged on the side of the flattening punch close to the inner side wall of the limiting groove, and an elastic member one connected with the inner side wall of the forming groove and the flattening punch is arranged on the outer side of the connecting rod.

[0012] By adopting the technical scheme, when the stamping seat two is pressed downward, the flattening punch first abuts against the necking of the pipe on the fixed seat two, the fixing column of the fixed seat two abuts against the pipe to enter the limiting groove of the stamping seat two, the connecting rod moves away from the workbench, the elastic member one is contracted, when the connecting rod moves to the limit position, the flattening punch flattens the necking of the pipe, the inner side wall of the limiting groove of the stamping seat two blocks the circumferential side wall of the pipe, and deformation of the side wall of the pipe during stamping is avoided as much as possible; when the stamping is finished and the stamping seat two moves away from the fixed seat two, the elastic member one rebounds to push the flattening punch to push the pipe in the limiting groove out, and the pipe is prevented from being stuck in the limiting groove as much as possible.

[0013] Optionally, the positioning column and the flattening punch are coaxially arranged with the fixing column arranged above the fixed seat one and the fixed seat two, and the diameter size of the flattening punch is not less than the diameter size of the fixing column.

[0014] By adopting the technical scheme, the possibility of deviation of the necking of the pipe during stamping is reduced, the diameter size of the flattening punch is not less than the diameter size of the fixing column, the flattening punch can flatten the necking of the pipe as a whole, and the possibility of turning of the necking of the pipe during flattening is avoided as much as possible.

[0015] Optionally, the fixing seat one and the fixing seat two are provided with a mounting seat in contact with the pipe, the mounting seat is provided with a through hole corresponding to the fixing column, the fixing seat one and the fixing seat two are provided with a plurality of fixing holes around the fixing column, a top rod is inserted into the inner side wall of the fixing hole and abuts against the mounting seat, and the top rod is provided below the elastic member two which pushes the top rod to abut against the mounting seat.

[0016] By adopting the above technical scheme, the mounting seat is lifted by the top rod pushed by the elastic member two after the pipe on the outer side of the fixing column on the mounting seat is punched, and the punched pipe is partially lifted from the fixing column, so that the pipe can be conveniently taken down and replaced.

[0017] Optionally, the fixing column on the fixing seat three is provided with a shearing groove corresponding to the cutting punch, the shearing groove penetrates through the workbench, the moving seat corresponding to the fixing seat three is arranged below the punching seat three, the moving seat is provided with a positioning groove abutting against the cutting punch, and the elastic member three is arranged between the moving seat and the punching seat three.

[0018] By adopting the above technical scheme, the cutting punch can continue to move downward along the inner side wall of the shearing groove of the fixing column of the fixing seat three, so that the pipe is prevented from being cut after the necking and still being connected together; when the punching seat three is pressed down by the driving end of the sliding block, the moving seat abuts against the necking of the pipe on the fixing seat three, the elastic member three is contracted, the cutting punch of the punching seat three continues to move downward to cut the excess part of the necking of the pipe, and the size of the necking of the pipe is kept consistent; and the shearing groove penetrates through the workbench, so that the cut material can fall conveniently.

[0019] Optionally, the moving seat is provided below with a pressing ring corresponding to the top edge position of the pipe above the fixing seat three, and the pressing ring is provided as a concave arc surface towards the center of the circle.

[0020] By adopting the above technical scheme, when the punching seat three is pressed down to make the moving seat abut against the necking of the pipe on the fixing column, the pressing ring is pressed down and fixed by abutting against the edge position of the top of the pipe, so that the possibility of the necking of the pipe being misaligned during the blanking is reduced.

[0021] Optionally, the outer side of the fixing seat one and the fixing seat two is provided with a circular arc baffle abutting against the side wall of the fixing seat one and the fixing seat two, and the height of the circular arc baffle is higher than the height of the fixing column.

[0022] By adopting the above technical scheme, the circular arc baffle higher than the fixing column is inserted and fixed on the outer side of the fixing seat one and the fixing seat two, so that the pipe ejected after the punching is blocked, and the possibility that the processed pipe is ejected far away from the workbench and cannot be quickly replaced is reduced.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The tube port of the pipe is extruded along the arc surface to form a neck when punching, the positioning column of the inner wall of the forming groove of the punching seat one passes through the pipe and abuts against the fixed column when the punching seat one moves down, so that the pipe abuts against the circumferential side wall of the positioning column when the neck is formed, the neck of the pipe is blocked, and the possibility of cracking of the pipe due to excessive necking is reduced;

[0025] 2. When the second punching seat is pressed down, the flattening punch first abuts against the neck of the pipe on the second fixed seat, the fixed column of the second fixed seat enters the limiting groove of the second punching seat, the connecting rod moves away from the workbench, the first elastic member is contracted, when the connecting rod moves to the limit position, the flattening punch flattens the neck of the pipe, the circumferential side wall of the pipe is blocked by the inner wall of the limiting groove of the second punching seat, and deformation of the side wall of the pipe during punching is avoided as much as possible, when the second punching seat moves away from the second fixed seat at the end of punching, the first elastic member rebounds to push the flattening punch to push the pipe in the limiting groove out, and the pipe is prevented from being stuck in the limiting groove as much as possible;

[0026] 3. When the third punching seat is pressed down to make the moving seat abut against the neck of the pipe on the fixed column, the pressure ring is pressed down to fix the edge position on the top of the pipe, and the possibility of misalignment of the neck of the pipe during blanking is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall processing device of the bushing outer pipe;

[0028] Figure 2 is a partial sectional view of the processing device of the bushing outer pipe.

[0029] In the figure, 1 is a workbench, 11 is a first fixed seat, 111 is a fixed hole, 112 is a top rod, 113 is a second elastic member, 12 is a second fixed seat, 13 is a third fixed seat, 14 is a fixed column, 141 is a shearing groove, 15 is a mounting seat, 151 is a through hole, 2 is a punching machine body, 21 is a first punching seat, 211 is a positioning column, 22 is a second punching seat, 221 is a flattening punch, 222 is a connecting rod, 223 is a first elastic member, 224 is a limiting groove, 23 is a third punching seat, 231 is a cutting punch, 232 is a moving seat, 233 is a positioning groove, 234 is a pressure ring, 24 is a forming groove, 241 is an arc surface, 25 is a third elastic member, 3 is a sliding block, 4 is a pipe, and 5 is a circular arc baffle. DETAILED DESCRIPTION

[0030] The following will be described in combination with the Figure 1 - the Figure 2 The present application will be further described in detail.

[0031] The processing device of the bushing outer pipe is described with reference toFigure 1 The punch machine body 2, the workbench 1 mounted on the punch machine body 2, the slide 3 arranged on the punch machine body 2 and above the workbench 1, the fixed seat one 11, the fixed seat two 12 and the fixed seat three 13 are fixed above the workbench 1 by bolts respectively, the cylindrical fixed column 14 is welded above the three fixed seats, the pipe fitting 4 to be processed is sleeved on the fixed column 14, the punch seat one 21, the punch seat two 22 and the punch seat three 23 corresponding to the fixed seat one 11, the fixed seat two 12 and the fixed seat three 13 respectively are fixed below the driving end of the slide 3 by bolts, three working procedures of the pipe fitting 4 are arranged in the same working position, the slide 3 is driven to be pressed down by the punch machine body 2 to complete the processing of three different working procedures of the bushing outer pipe, and the processing efficiency of the bushing outer pipe is improved.

[0032] With reference to Figure 1 and Figure 2 The forming groove 24 corresponding to the outer side wall of the pipe fitting 4 is arranged below the punch seat one 21, the arc surface 241 corresponding to the pipe opening of the pipe fitting 4 is arranged on the inner side wall of the forming groove 24 of the punch seat one 21, the pipe opening of the pipe fitting 4 is extruded to form a necking when being punched along the arc surface 241, the positioning column 211 is welded on the inner side wall of the forming groove 24 of the punch seat one 21, the positioning column 211 passes through the pipe fitting 4 and abuts against the fixed column 14 when the punch seat one 21 moves downward, the pipe fitting 4 abuts against the circumferential side wall of the positioning column 211 when necking, the necking of the pipe fitting 4 is blocked, and the possibility that the pipe fitting 4 is cracked when the necking of the pipe fitting 4 is too large is reduced.

[0033] With reference to Figure 1 and Figure 2 The limiting groove 224 is arranged below the punch seat two 22, the flattening punch 221 is arranged on the inner side wall of the limiting groove 224 in a sliding mode, the connecting rod 222 moving along the length direction of the punch seat two 22 is welded on the side of the flattening punch 221 close to the inner side wall of the limiting groove 224, the elastic member one 223 connected with the inner side wall of the limiting groove 224 and the flattening punch 221 is arranged on the outer side of the connecting rod 222, the fixed column 14 on the fixed seat two 12 enters the limiting groove 224 of the punch seat two 22 when the punch seat two 22 is pressed down, the spring as the elastic member one 223 is contracted, the connecting rod 222 moves to the limit position, and the flattening punch 221 flattens the necking of the pipe fitting 4; the positioning column 211 and the flattening punch 221 are coaxially arranged with the fixed column 14 on the fixed seat one 11 and the fixed seat two 12, the possibility that the necking of the pipe fitting 4 deviates during the necking processing of the pipe fitting 4 is reduced, the diameter of the flattening punch 221 is not less than the diameter of the fixed column 14, and the flattening punch 221 can flatten the necking of the pipe fitting 4 as a whole.

[0034] With reference to Figure 1 and Figure 2A moving seat 232 corresponding to the fixed seat three 13 is arranged below the punching seat three 23, the moving seat 232 is positioned by a metal vertical rod passing through the moving seat 232 below the punching seat three 23, a cutting punch 231 corresponding to the neck of the pipe fitting 4 is welded below the punching seat three 23, the moving seat 232 is provided with a positioning groove 233 matched with the cutting punch 231, the elastic member three 25 is fixedly connected between the moving seat 232 and the punching seat three 23, the elastic member three 25 is a spring, when the driving end of the sliding block 3 drives the punching seat three 23 to be pressed downward, the moving seat 232 abuts against the neck of the pipe fitting 4 on the fixed seat three 13, the elastic member three 25 is contracted, the cutting punch 231 of the punching seat three 23 continues to move downward to cut the excess part of the neck of the pipe fitting 4, and the size of the neck of the pipe fitting 4 is kept consistent.

[0035] With reference to Figure 1 And Figure 2 The shearing groove 141 corresponding to the cutting punch 231 is arranged on the fixed column 14 of the fixed seat three 13, the shearing groove 141 penetrates the fixed seat three 13 and the workbench 1, so that the cutting punch 231 can continue to move downward along the inner side wall of the shearing groove 141, and the neck of the pipe fitting 4 is prevented from being cut together.

[0036] With reference to Figure 2 A plurality of fixed holes 111 are arranged on the fixed seat one 11 and the fixed seat two 12 around the fixed column 14, the top rod 112 is inserted into the fixed hole 111, the elastic member two 113 is installed below the top rod 112, the elastic member two 113 is a spring installed in the hole of the workbench 1, the through hole 151 corresponding to the fixed column 14 is arranged on the mounting seat 15, so that the mounting seat 15 is in contact with the top rod 112, the punching seat one 21 and the punching seat two 22 are pressed against the mounting seat 15, the pipe fitting 4 sleeved outside the fixed column 14 on the mounting seat 15 is punched, then the top rod 112 is pushed by the elastic member two 113 to lift the mounting seat 15, and the punched pipe fitting 4 is lifted from the fixed column 14, so that the pipe fitting 4 is convenient to take down and replace; the circular arc baffle 5 higher than the fixed column 14 is inserted and fixed outside the fixed seat one 11 and the fixed seat two 12, and the pipe fitting 4 ejected after punching is blocked.

[0037] The implementation principle of the embodiment of the application is as follows:

[0038] In actual operation, the pipe 4 to be processed is sleeved on the fixing column 14 of the fixing seat one 11 for fixation, the punch seat one 21 is pressed down, the pipe 4 is punched along the arc surface 241 in the forming groove 24 of the punch seat one 21 to form a necked portion; the pipe 4 after the necked portion is processed is sleeved on the fixing column 14 of the fixing seat two 12, the punch seat two 22 is pressed down, the necked portion of the pipe 4 is flattened by the flattening punch 221; the pipe 4 after the necked portion is flattened is placed on the fixing column 14 of the fixing seat three 13, the punch seat three 23 is pressed down, the necked portion of the pipe 4 is punched by the punching punch 231 of the punch seat three 23, the size of the necked portion is ensured to be more uniform; the three punch seats are driven to be pressed down by the slider 3 of the punch machine body 2 above the workbench 1, the processing of different procedures of the bushing outer pipe is completed, and the processing efficiency of the bushing outer pipe is improved.

[0039] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A processing apparatus for bushing outer tubes, comprising a press body (2), a worktable (1) located on the press body (2), and a slider (3) disposed on the press body (2) and located above the worktable (1), characterized in that: The workbench (1) is provided with a fixed seat one (11), a fixed seat two (12) and a fixed seat three (13) above which the pipe fittings (4) to be processed are placed, the fixed seat one (11), the fixed seat two (12) and the fixed seat three (13) are provided with fixed columns (14) which are in close contact with the inner side walls of the pipe fittings (4) to be processed, the slider (3) is provided with a punch seat one (21), a punch seat two (22) and a punch seat three (23) below which the fixed seat one (11), the fixed seat two (12) and the fixed seat three (13) correspond respectively, the punch seat one (21) is provided with a forming groove (24) below which the pipe fittings (4) correspond, the punch seat two (22) is provided with a flattening punch (221) below which the pipe fittings (4) correspond, and the punch seat three (23) is provided with a cutting punch (231) below which the pipe fittings (4) correspond.

2. The apparatus for processing a bushing outer tube according to claim 1, characterized by: The inner side wall of the forming groove (24) of the punch seat one (21) is provided with an arc surface (241) which corresponds to the pipe opening of the pipe fittings (4), and the punch seat one (21) is provided with a positioning column (211) on the inner side wall of the forming groove (24) which corresponds to the pipe fittings (4).

3. The apparatus of claim 2, wherein: The punch seat two (22) is provided with a limiting groove (224) below which the flattening punch (221) slides up and down, and the flattening punch (221) is provided with a connecting rod (222) which moves along the length direction of the punch seat two (22) on the side close to the inner side wall of the limiting groove (224), and the outer side of the connecting rod (222) is provided with an elastic member one (223) which is connected with the inner side wall of the limiting groove (224) and the flattening punch (221).

4. The apparatus for processing a bushing outer tube according to claim 3, wherein: The positioning column (211) and the flattening punch (221) are coaxially arranged with the fixed column (14) above the fixed seat one (11) and the fixed seat two (12), and the diameter size of the flattening punch (221) is not less than the diameter size of the fixed column (14).

5. The apparatus of claim 1 wherein: The fixed seat one (11) and the fixed seat two (12) are provided with a mounting seat (15) above which the pipe fittings (4) are in contact, the mounting seat (15) is provided with a through hole (151) which corresponds to the fixed column (14), the fixed seat one (11) and the fixed seat two (12) are provided with a plurality of fixed holes (111) around the fixed column (14), the inner side wall of the fixed hole (111) is provided with a jack (112) which abuts against the mounting seat (15), and the lower side of the jack (112) is provided with an elastic member two (113) which abuts against the mounting seat (15).

6. The apparatus of claim 5, wherein: The fixed column (14) on the fixed seat three (13) is provided with a shearing groove (141) which corresponds to the cutting punch (231), the shearing groove (141) penetrates through the workbench (1), the punch seat three (23) is provided with a moving seat (232) below which the fixed seat three (13) corresponds, the moving seat (232) is provided with a positioning groove (233) which is in close contact with the cutting punch (231), and the moving seat (232) and the punch seat three (23) are connected with an elastic member three (25).

7. The apparatus of claim 6 wherein: The mobile seat (232) is provided with a compression ring (234) corresponding to the position of the top edge of the pipe (4) above the fixed seat three (13), which is provided with a concave arc surface towards the center of the circle.

8. The apparatus of claim 5 wherein: The fixed seat one (11) and the fixed seat two (12) are provided with a circular arc baffle (5) which is attached to the side wall of the fixed seat one (11) and the fixed seat two (12), and the height of the circular arc baffle (5) exceeds the height of the fixed column (14).

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