Automobile hinge profile lug convex material removing equipment

Abstract

The invention belongs to the field of metal machining equipment, and particularly relates to automobile hinge profile lug convex material removing equipment which comprises a workbench, a front feeding part, a milling part, a grinding part and a rear feeding part are sequentially arranged on the table top of the workbench from front to back, the milling part is used for milling lugs on the arc surface of a profile, and the grinding part is used for grinding the lugs on the arc surface of the profile. The grinding part is used for grinding the position, subjected to grinding treatment, of the arc surface of the profile; the rear feeding part and the front feeding part have the same driving frequency and are used for ensuring that the conveying speeds of the rear feeding part and the front feeding part to the sectional material are consistent, and the sectional material is clamped by the rotating upper / lower molded surface feeding wheels to reach a feeding station and a milling station, so that lug convex materials on the upper molded surface are processed by taking the outer molded surface of the sectional material as a positioning reference; therefore, the processing effect of the whole profile is stable and consistent and is not influenced by the thickness change of the section of the profile, and the working efficiency can be greatly improved by a mode of mechanically realizing continuous processing of the whole profile.

Description

Technical Field

[0001] The invention belongs to the field of metal processing equipment, and in particular relates to a device for removing convex material of an ear of an automobile hinge profile. Background Art

[0002] As an important component connecting the car door and the car body, the car hinge enables the car door to open and close relative to the car body, and provides stable support for the car door during the opening and closing process to ensure that the car door can remain in the correct position.

[0003] Usually, the metal billet is rolled after being heated at high temperature to form a car hinge profile with a specific shape and size. High-temperature rolling can produce profiles with larger size and longer length, with high production efficiency, which can meet the needs of large-scale production. However, after the hot rolling of the profile, there are protruding ears left by the rolling process. Now it is generally processed by manual milling and grinding using electric tools. Due to the long length of the rolled profile, the profile is fixed before processing. After fixing, the ear protrusions on the surface of the profile are manually ground and polished using electric tool milling tools or grinding tools. During this period, the electric tool needs to move along the length direction of the profile many times to complete the processing of the entire profile. Because the thickness of the profile section varies, manual grinding is likely to cause uneven profile surface, different depths of processing marks, and high labor intensity, labor and time.

[0004] In order to avoid the labor-intensive problem of manual milling and improve the appearance quality of the processed profile, the present invention provides a device for removing the protruding material of the ear of an automobile hinge profile. Summary of the invention

[0005] In view of the above problems, an embodiment of the present application provides a device for removing ear protrusions from automobile hinge profiles. The device takes the outer surface of the profile as a reference, clamps the profile through rotating upper / lower profile feeding wheels, and drives the profile to move at a preset frequency. The device cooperates with the adjusted tool to stably and evenly remove the ear protrusions remaining on the outer surface of the profile, thereby achieving the effect of improving efficiency and ensuring the quality of the profile appearance.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solutions: a device for removing protrusions from ears of automobile hinge profiles, comprising a workbench, on the surface of which a front feeding part, a milling part, a grinding part and a rear feeding part are arranged in sequence from front to back, wherein the milling part is used to mill the ears on the arc surface of the profile, and the grinding part is used to grind the position of the arc surface of the profile after grinding; the rear feeding part and the front feeding part have the same driving frequency to ensure that the conveying speeds of the profiles by the two are consistent.

[0007] The front feeding part includes a square frame arranged on the workbench, a material frame is arranged on the upper end of the square frame, and a lower profile feeding wheel and an upper profile feeding wheel are respectively arranged inside the material frame for rotation from bottom to top, and the upper profile feeding wheel and the lower profile feeding wheel cooperate with each other to fit with the upper profile and the lower profile of the profile respectively; a driving gear is fixedly arranged on the outer wall of the shaft head at one end of the lower profile feeding wheel and the outer wall of the shaft head at one end of the upper profile feeding wheel, and the two driving gears are meshed with each other in the working state; a transmission system for driving the lower profile feeding wheel to rotate is arranged inside the material frame, and the transmission system adopted in this embodiment is driven by a sprocket in combination with a motor.

[0008] The milling part includes a positioning component for positioning the profile, an executing tool holder for processing the ear protrusions on the surface of the profile, and an executing component for adjusting the executing tool holder to fit the ear protrusions on the surface of the profile. The positioning component and the executing component are both arranged in the middle of the workbench by bolts, and the executing component is provided with an executing tool holder, on which a milling processing tool is installed.

[0009] According to a favorable embodiment, the positioning assembly includes a lower positioning support and an upper positioning support respectively fixed to the workbench by bolts, the lower positioning support and the upper positioning support are arranged in the left and right directions, the lower positioning support is equipped with a lower profile positioning wheel controlled by an electric cylinder for lifting, and the upper positioning support is equipped with an upper profile positioning wheel, the upper profile positioning wheel and the lower profile positioning wheel both cooperate with the profile and both can rotate circumferentially.

[0010] According to a favorable embodiment, the execution component includes a guide rail fixedly arranged on the upper end of the workbench, a support base which can be moved laterally by an electric cylinder is slidably arranged on the guide rail, a lifting plate is rotatably arranged on the end of the support base close to the positioning component through an ear plate cooperating with a pin shaft, an angle adjustment unit is arranged on the end of the lifting plate away from the positioning component, a height adjustment unit is arranged on the lifting plate, a power head is connected to the height adjustment unit, and the power head is connected to the execution tool seat.

[0011] According to a favorable embodiment, the angle adjustment unit includes two side panels arranged on the front and rear side walls of the support seat, both side panels are provided with arc grooves, and the outer wall of the lower end of the lifting plate is symmetrically fixed with a connecting seat with a bolt at one end, and the bolt passes through the corresponding arc groove and is fixed by a nut; a clamping plate is arranged on the right side of the lifting plate, and the angle adjustment unit also includes a fine-tuning screw whose lower end is rotatably arranged on the support seat through a bearing, the top end of the fine-tuning screw is connected to an operating handle, and the middle part of the fine-tuning screw is threaded with a frame-type clamping frame, and the frame-type clamping frame support seat is slidably connected through a limiting column, and the clamping plate is clamped in the frame-type clamping frame.

[0012] According to a favorable embodiment, the grinding part and the milling part are identical in structure except for the specific components installed on the tool holder; a louver grinding wheel is installed on the tool holder on the grinding part, and specifically a silicon carbide grinding wheel, an alumina grinding wheel, etc. may be selected.

[0013] According to an advantageous embodiment, the upper profile feeding wheel is arranged inside the material frame in a manner of sliding up and down, and the two driving gears are always in a meshing state during the upper profile feeding wheel sliding up and down.

[0014] According to a favorable embodiment, an electric push rod with a driving end facing downward is provided at the top of the material frame, and the lower end of the electric push rod is connected to an inverted U-shaped frame. The two shaft heads of the upper profile feeding wheel are respectively installed between the inner walls of the inverted U-shaped frame through bearings, and the left and right side walls of the material frame are provided with limiting grooves for guiding the inverted U-shaped frame to slide up and down.

[0015] According to a favorable embodiment, compared with the front feeding part, the rear feeding part has a material drag assembly for auxiliary feeding of profiles provided on the rear outer wall of the material frame, and the rest of the structure is exactly the same as that of the front feeding part.

[0016] According to an advantageous embodiment, a vertical strip groove is provided on the upper positioning support, and the upper profile positioning wheel can be fixed at any position in the strip groove by bolts.

[0017] According to a favorable embodiment, a plurality of guide plates for guiding the left and right inner and outer walls of the inverted U-shaped frame are provided at the limiting groove.

[0018] Compared with the prior art, an embodiment of the present invention provides a device for removing ear protrusions from automobile hinge profiles, which has the following beneficial effects: 1. The present invention can use the outer surface of the profile as a reference, clamp the profile by rotating the upper / lower profile feeding wheels, and drive the profile to move at a preset frequency, and cooperate with the adjusted tool to stably and evenly remove the ear protrusions remaining on the outer surface of the profile, thereby achieving the effect of improving efficiency and ensuring the quality of the profile appearance.

[0019] 2. In the present invention, the profile is clamped by the rotating upper / lower profile feeding wheels, and after reaching the feeding station and the milling station, the ear protrusions on the upper profile are processed based on the profile outer surface as the positioning reference. Therefore, the processing effect of the entire profile is stable and consistent, and is not affected by the thickness change of the profile cross section. In addition, the mechanized continuous processing of the entire profile can greatly improve the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is an operation diagram of processing the ear protrusions on the surface of the profile by cooperating with the existing positioning and conveying equipment.

[0021] Figure 2 This is a front view stereoscopic structural diagram of the present invention (after removing the internal motor structure of the power head).

[0022] Figure 3 This is a rear stereoscopic structural diagram of the present invention (after removing the internal motor structure of the power head).

[0023] Figure 4 It is a three-dimensional structural diagram of the rear side of the milling part of the present invention.

[0024] Figure 5 It is a three-dimensional structural diagram of the milling part of the present invention (after removing the motor structure inside the power head) in a side view.

[0025] Figure 6 It is a structural diagram of the square frame of the present invention and the profile feeding wheel thereon.

[0026] Figure 7 It is a structural diagram of the profile targeted by the present invention.

[0027] Figure 8 This is a state diagram in which the lower profile feeding wheel and the upper profile feeding wheel of the present invention are both fitted with the profile.

[0028] Reference numerals in the figure: 1, workbench; 2, front feeding part; 3, milling part; 4, grinding part; 5, rear feeding part; 21, square frame; 22, material frame; 221, lower profile feeding wheel; 222, upper profile feeding wheel; 23, driving gear; 24, transmission system; 223, electric push rod; 224, inverted U-shaped frame; 225, limit groove; 226, guide plate; 25, material drag assembly; 31, positioning assembly; 32, execution knife seat; 33, execution assembly; 3 11. Lower positioning support; 312. Upper positioning support; 313. Lower profile positioning wheel; 314. Strip groove; 315. Upper profile positioning wheel; 331. Guide rail; 332. Support seat; 333. Lifting plate; 334. Angle adjustment unit; 335. Height adjustment unit; 336. Power head; 3341. Two side panels; 3342. Arc groove; 3343. Connecting seat; 3344. Card plate; 3345. Fine-tuning screw; 3346. Frame-type card bracket. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-8 The present application is further described in detail.

[0030] Please refer to Figure 1 , Figure 2 , Figure 6 and Figure 7A device for removing convex material from ears of automobile hinge profiles comprises a workbench 1, on the surface of which a front feeding part 2, a milling part 3, a grinding part 4 and a rear feeding part 5 are arranged in sequence from front to back, the front feeding part 2 comprises a lower profile feeding wheel 221, an upper profile feeding wheel 222 and a driving gear 23, wherein the milling part 3 is used for milling the ears on the arc surface of the profile, and the grinding part 4 is used for grinding the position of the arc surface of the profile after grinding; the rear feeding part 5 and the front feeding part 2 have the same driving frequency to ensure that the two have the same conveying speed for the profile.

[0031] When working, it needs to be used in conjunction with the existing positioning and conveying equipment. First, set various parameters such as the profile conveying speed, press the start button, and the lifting mechanism of the positioning and conveying equipment will push the profile to the appropriate position. When the rack sensor senses that the profile is in the appropriate position, the air claw gripper starts to clamp the profile to between the lower profile feeding wheel 221 and the upper profile feeding wheel 222 of the front feeding part 2, and control the upper profile feeding wheel 222 to press down and clamp the profile with the lower profile feeding wheel 221 (see Figure 8 ), the upper profile feeding wheel 222 and the lower profile feeding wheel 221 are driven by the driving gear 23 with the same module and the same number of teeth, so the rotation speed is the same, and the profile can be stably conveyed backward; the profile passes through the milling part 3 and the grinding part 4 in turn to complete the ear convex material processing process, and finally is sent out through the rear feeding part 5.

[0032] See also Figure 1 and Figure 6 The front feeding part 2 also includes a square frame 21 arranged on the workbench 1, and a material frame 22 is arranged at the upper end of the square frame 21. A lower profile feeding wheel 221 and an upper profile feeding wheel 222 are respectively arranged inside the material frame 22 to rotate from bottom to top. The upper profile feeding wheel 222 and the lower profile feeding wheel 221 cooperate with each other to fit the upper profile and the lower profile of the profile respectively, so as to ensure that the profile is not affected by the thickness change of the profile cross section during processing, and ensure that the profile can remain stable during processing during the conveying process. The outer wall of the shaft head at one end of the lower profile feeding wheel 221 and the outer wall of the shaft head at one end of the upper profile feeding wheel 222 are fixedly provided with a driving gear 23, and the two driving gears 23 are meshed with each other in the working state; a transmission system 24 for driving the lower profile feeding wheel 221 to rotate is arranged inside the material frame 22. The transmission system 24 used in this embodiment is driven by a sprocket in combination with a motor, and of course it can also be driven by a pulley in combination with a motor.

[0033] See also Figure 6 and Figure 8The upper profile feeding wheel 222 is arranged inside the material frame 22 by sliding up and down, and the two driving gears 23 are always in a meshing state during the upper profile feeding wheel 222 sliding up and down, so as to ensure that the upper profile feeding wheel 222 and the lower profile feeding wheel 221 keep moving at the same frequency, thereby ensuring stable transportation of the profile, thereby ensuring the effect of the milling part 3 and the grinding part 4 on the surface processing of the profile.

[0034] Continue reading Figure 6 The top of the material frame 22 is provided with an electric push rod 223 with the driving end facing the lower side, and the lower end of the electric push rod 223 is connected to an inverted U-shaped frame 224. The two shaft heads of the upper profile feeding wheel 222 are respectively installed between the inner walls of the inverted U-shaped frame 224 through bearings, and the left and right side walls of the material frame 22 are provided with limiting grooves 225 for guiding the inverted U-shaped frame 224 to slide up and down; the limiting grooves 225 are provided with a plurality of guide plates 226 for guiding the left and right inner and outer walls of the inverted U-shaped frame 224.

[0035] Specifically, the electric push rod 223 drives the inverted U-shaped frame 224 to move up and down, thereby further driving the upper surface feeding wheel 222 to move up and down to adjust its position. It should be noted that the telescopic movement stroke of the electric push rod 223 is controlled within the range of a tooth root height of the driving gear 23, thereby ensuring that the two driving gears 23 are always in a meshing state during the up and down movement of the upper surface feeding wheel 222.

[0036] See also Figure 2 , wherein the rear feeding part 5 is compared with the front feeding part 2, except that it is provided with a material drag assembly 25 for auxiliary feeding of the profile, and the rest of the structure is exactly the same as the structure on the front feeding part 2; the purpose of setting the material drag assembly 25 on the rear feeding part 5 is: to further support it during the transportation process after the ear protrusions on the profile have been completely processed, to reduce its cantilever support strength, thereby preventing the profile from being deformed or damaged at the end of transportation; the material drag assembly 25 used in this embodiment is mainly composed of a material seat fixedly set on the material frame 22 and a push rod installed on the material seat by threaded rotation to achieve height adjustment, and the top end of the push rod is cooperated with a ball that rolls against the lower surface of the profile to ensure smooth transportation of the profile.

[0037] See also Figure 3 The milling part 3 includes a positioning component 31 for positioning the profile, an execution tool holder 32 for processing the ear protrusions on the surface of the profile, and an execution component 33 for adjusting the execution tool holder 32 to fit the ear protrusions on the surface of the profile. The positioning component 31 and the execution component 33 are both arranged in the middle of the workbench 1 by bolts, and the execution tool holder 32 is arranged on the execution component 33. The execution tool holder 32 is installed with a milling tool. In this embodiment, a face milling cutter is used.

[0038] The positioning component 31 is provided to further ensure circumferential support at the processing position of the profile, fully eliminate the lateral force of the tool on the profile, thereby preventing the profile from jumping up and down and ensuring stability; the execution component 33 controls the execution tool holder 32 to drive the face milling cutter connected to it to complete the milling and removal of the ear protrusions on the outer wall of the profile.

[0039] See also Figure 2 The grinding part 4 and the milling part 3 are identical in structure except for the specific components installed on the execution tool holder 32. The execution tool holder 32 on the grinding part 4 is equipped with a common abrasive grinding wheel. In this embodiment, a louver grinding wheel is used. Specifically, a silicon carbide grinding wheel, an alumina grinding wheel, etc. can also be selected. The specific operation process of the grinding part 4 is the same as that of the milling part 3.

[0040] See also Figure 5 The positioning assembly 31 includes a lower positioning support 311 and an upper positioning support 312 respectively fixed to the workbench 1 by bolts, the lower positioning support 311 and the upper positioning support 312 are arranged in the left and right directions, and a lower profile positioning wheel 313 controlled by an electric cylinder is installed on the lower positioning support 311, a vertical strip groove 314 is opened on the upper positioning support 312, and an upper profile positioning wheel 315 is arranged on the upper positioning support 312. The upper profile positioning wheel 315 can be fixed by bolts at any position in the strip groove 314, and the upper profile positioning wheel 315 and the lower profile positioning wheel 313 both cooperate with the profile and both can rotate circumferentially.

[0041] See also Figure 4 The upper profile positioning wheel 315 in the positioning assembly 31 is fixed by bolts after the initial position is adjusted, and its position remains unchanged. During the processing, the upper profile positioning wheel 315 is used as a reference for the profile to ensure the stability of the profile.

[0042] See also Figure 3 and Figure 5 The execution component 33 includes a guide rail 331 fixedly arranged on the upper end of the workbench 1, and a support seat 332 which can be moved laterally by an electric cylinder is slidably arranged on the guide rail 331. A lifting plate 333 is rotatably arranged on the end of the support seat 332 close to the positioning component 31 through an ear plate cooperating with a pin shaft, and an angle adjustment unit 334 is arranged on the end of the lifting plate 333 away from the positioning component 31. A height adjustment unit 335 is arranged on the lifting plate 333, and a power head 336 is connected to the height adjustment unit 335, and the power head 336 is connected to the execution tool seat 32.

[0043] The electric cylinder can control the moving position of the support seat 332, thereby indirectly adjusting the face milling cutter connected to the end of the tool holder 32 to fit the ear protrusion at the front end of the profile to complete the grinding; when making specific adjustments, it is also necessary to cooperate with the operation of the angle adjustment unit 334 and the height adjustment unit 335 to ensure that the ear protrusion can be completely cut off during the tool grinding work.

[0044] See also Figure 5 The angle adjustment unit 334 used in this embodiment includes two side plates 3341 arranged on the front and rear side walls of the support seat 332, and arc grooves 3342 are opened on the two side plates 3341, and a connecting seat 3343 with a bolt at one end is symmetrically fixed on the outer wall of the lower end of the lifting plate 333, and the bolt passes through the corresponding arc groove 3342 and is fixed by a nut; a clamping plate 3344 is arranged on the right side of the lifting plate 333, and the angle adjustment unit 334 also includes a fine-tuning screw 3345 rotatably arranged on the support seat 332 at the lower end through a bearing, and an operating handle is connected to the top of the fine-tuning screw 3345, and a frame-type clamping frame 3346 is threadedly arranged on the middle part of the fine-tuning screw 3345, and the frame-type clamping frame 3346 is slidably connected to the support seat 332 through a limiting column, and the clamping plate 3344 is clamped in the frame-type clamping frame 3346.

[0045] When the angle adjustment unit 334 is operated, the frame-type clamping frame 3346 can be moved up and down by hand-cranking the operating handle in cooperation with the limiting guiding function of the limiting column. During the up and down movement of the frame-type clamping frame 3346, the limiting clamping card 3344 is driven to move accordingly, thereby driving the lifting plate 333 to fine-tune the angle (after the adjustment is completed, the nut on the bolt side of the connecting seat 3343 needs to be tightened to fix the angle), and further driving the execution tool seat 32 to tilt, so that the face milling cutter / louver grinding wheel can better fit the outer surface of the profile, thereby making the outer surface of the profile smooth.

[0046] It should be noted that the card plate 3344 is not in a clamped state in the frame-type clamping frame 3346. When the card plate 3344 moves up and down with the frame-type clamping frame 3346, the card plate 3344 can move relative to the frame-type clamping frame 3346 to adapt to the position changes of the card plate 3344 in the lateral and vertical directions due to the angle changes.

[0047] See also Figure 5 The power head 336 in this embodiment is internally driven by a motor and a sprocket to drive the execution tool holder 32 to operate. The height adjustment unit 335 in this embodiment adopts the currently common spiral fine-tuning structure for fine-tuning, which will not be described in detail in this embodiment.

[0048] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for removing the protruding material of the ear of an automobile hinge profile, comprising a workbench, on the workbench surface of which a front feeding part, a milling part, a grinding part and a rear feeding part are arranged in sequence from front to back, characterized in that: The milling part is used to mill the ears of the arc surface of the profile, and the grinding part is used to grind the position of the arc surface of the profile after grinding; the rear feeding part and the front feeding part have the same driving frequency; The front feeding part comprises a square frame arranged on the workbench, a material frame is arranged at the upper end of the square frame, a lower profile feeding wheel and an upper profile feeding wheel are arranged inside the material frame for rotation from bottom to top, and a driving gear is fixedly arranged on the outer wall of the shaft head at one end of the lower profile feeding wheel and the outer wall of the shaft head at one end of the upper profile feeding wheel, and the two driving gears are meshed with each other in the working state; a transmission system for driving the lower profile feeding wheel to rotate is arranged inside the material frame; The upper profile feeding wheel and the lower profile feeding wheel cooperate with each other to fit the upper profile and the lower profile of the profile respectively; The milling part includes a positioning component for positioning the profile, an executing tool holder for processing the ear protrusions on the surface of the profile, and an executing component for adjusting the executing tool holder to fit the ear protrusions on the surface of the profile. The positioning component and the executing component are both arranged in the middle of the workbench by bolts, and the executing component is provided with an executing tool holder, on which a milling processing tool is installed.

2. The device for removing the ear protrusion of an automobile hinge profile according to claim 1, characterized in that: The positioning assembly includes a lower positioning support and an upper positioning support which are respectively fixed to the workbench by bolts. The lower positioning support and the upper positioning support are arranged in the left and right directions. The lower positioning support is provided with a lower profile positioning wheel which is controlled to rise and fall by an electric cylinder. The upper positioning support is provided with an upper profile positioning wheel. The upper profile positioning wheel and the lower profile positioning wheel both cooperate with the profile and both can rotate circumferentially.

3. The device for removing the ear protrusion of an automobile hinge profile according to claim 1, characterized in that: The execution component includes a guide rail fixedly arranged on the upper end of the workbench, a support base which can be moved laterally by an electric cylinder is slidably arranged on the guide rail, a lifting plate is arranged on the end of the support base close to the positioning component through an ear plate and a pin shaft, an angle adjustment unit is arranged on the end of the lifting plate away from the positioning component, a height adjustment unit is arranged on the lifting plate, a power head is connected to the height adjustment unit, and the power head is connected to the execution tool seat.

4. The device for removing the ear protrusion of an automobile hinge profile according to claim 3, characterized in that: The angle adjustment unit includes two side panels arranged on the front and rear side walls of the support seat, and arc grooves are opened on the two side panels, and a connecting seat with a bolt at one end is symmetrically fixed on the outer wall of the lower end of the lifting plate, and the bolt passes through the corresponding arc groove and is fixed by a nut; a clamping plate is arranged on the right side of the lifting plate, and the angle adjustment unit also includes a fine-tuning screw which is rotatably arranged on the support seat at the lower end through a bearing, an operating handle is connected to the top end of the fine-tuning screw, and a frame-type clamping frame is threadedly arranged on the middle part of the fine-tuning screw, and the frame-type clamping frame is slidably connected to the support seat through a limiting column, and the clamping plate is clamped in the frame-type clamping frame.

5. The device for removing the ear protrusion of an automobile hinge profile according to claim 1, characterized in that: The grinding part and the milling part are identical in structure except for the specific components installed on the execution tool holder. A common abrasive grinding wheel is installed on the execution tool holder on the grinding part.

6. The device for removing the ear protrusion of an automobile hinge profile according to claim 1, characterized in that: The upper profile feeding wheel is arranged inside the material frame in a manner of sliding up and down, and the two driving gears are always in a meshing state during the upper profile feeding wheel sliding up and down.

7. The device for removing the ear protrusion of an automobile hinge profile according to claim 1, characterized in that: The top of the material frame is provided with an electric push rod with the driving end facing downward, and the lower end of the electric push rod is connected to an inverted U-shaped frame. The two shaft heads of the upper surface feeding wheel are respectively installed between the inner walls of the inverted U-shaped frame through bearings, and the left and right side walls of the material frame are provided with limiting grooves for guiding the inverted U-shaped frame to slide up and down.

8. The device for removing the ear protrusion of an automobile hinge profile according to claim 1, characterized in that: Compared with the front feeding part, the rear feeding part has the same structure as the front feeding part, except that a material drag assembly for auxiliary feeding of profiles is provided on the rear outer wall of the material frame.

9. The device for removing the ear protrusion of an automobile hinge profile according to claim 2, characterized in that: A vertical strip groove is provided on the upper positioning support, and the upper profile positioning wheel can be fixed at any position in the strip groove by bolts.

10. The device for removing the ear protrusion of an automobile hinge profile according to claim 7, characterized in that: The limiting groove is provided with a plurality of guide plates for guiding the left and right inner and outer walls of the inverted U-shaped frame.

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