CN113927087B

CN113927087B - Device for cutting off rim charge at head of wiper arm

Info

Publication number: CN113927087B
Application number: CN202111519589.2A
Authority: CN
Inventors: 孙艺华
Original assignee: Ningbo Ikd Precision Parts Co ltd
Current assignee: Ningbo Ikd Precision Parts Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-03-11
Anticipated expiration: 2041-12-14
Also published as: CN113927087A

Abstract

The invention discloses a wiper arm head rim charge cutting device, which comprises a frame with a working platform, a rotary cutter and a movable bottom plate, wherein the rotary cutter and the movable bottom plate are arranged on the working platform and driven by a motor; the movable bottom plate is provided with at least one adjustable base, and the adjustable base is provided with a clamp assembly for clamping the wiper arm; the adjustable base comprises a lower adjusting plate adjusted by the first adjusting device and an upper adjusting plate adjusted by the second adjusting device, and the first screw is screwed to drive the lower adjusting plate to move on the movable bottom plate in the front-back position; the second screw is screwed to drive the upper adjusting plate to move on the lower adjusting plate in the left-right position, in the machining process, an operator can drive the moving bottom plate to enable the head of the wiper arm to be basically close to and opposite to the rotary cutter, and then the accurate adjustment of the position is achieved by adjusting the first screw or the second screw.

Description

Device for cutting off rim charge at head of wiper arm

Technical Field

The invention relates to aluminum die casting machining equipment, in particular to a device for cutting off rim charge of a head of a wiper arm.

Background

The aluminum die casting is widely applied to various industries such as automobile manufacturing, internal combustion engine production, motorcycle manufacturing, motor manufacturing, oil pump manufacturing, transmission machinery manufacturing, precision instruments, landscaping, electric power construction, building decoration and the like. In automobile manufacturing, automobile parts such as automobile transmission cases, steering wheel cases, wiper arms, and the like are all aluminum die-cast parts.

CN108672749A discloses an aluminum die-casting wiper arm and punching equipment;

CN109677361A discloses an adjustable mixed material wiper arm;

CN109848651A discloses a method for manufacturing an aluminum automobile wiper driving arm.

After the wiper arm is die-cast, its rim charge needs to be cut off. The wiper arm is in an irregular long and narrow structure, so that the fixing and cutting of the wiper arm are difficult. The traditional regular aluminum die casting machining equipment is difficult to be suitable for further fine machining of the wiper arm.

Disclosure of Invention

The invention aims to provide a device for cutting off the rim charge at the head of a wiper arm, which can clamp the head of the wiper arm and simultaneously realize the accurate positioning of a cutting position.

The technical scheme adopted by the invention for solving the technical problems is as follows: the wiper arm head rim charge cutting device comprises a frame with a working platform, a rotary cutter and a movable bottom plate, wherein the rotary cutter and the movable bottom plate are arranged on the working platform and driven by a motor;

the movable bottom plate can move in the front-back direction, so that the positioning seat is integrally close to the rotary cutter and far away from the rotary cutter;

a rotating shaft of the rotary cutter is parallel to the working platform, a cutting edge of the rotary cutter is arranged on the peripheral surface, and the section of the rotary cutter is parallel to the moving track of the moving bottom plate;

the movable bottom plate is provided with at least one adjustable base, and the adjustable base is provided with a clamp assembly for clamping the wiper arm;

the adjustable base comprises a lower adjusting plate adjusted by the first adjusting device and an upper adjusting plate adjusted by the second adjusting device;

the first adjusting device comprises a first fixing base and a first screw, and a first threaded hole for screwing the first screw is formed in the rear end of the lower adjusting plate; the first fixing base is provided with a first limiting groove for limiting the movement of the first screw;

the second adjusting device comprises a second fixing base and a second screw, a second threaded hole for the second screw to be screwed in is formed in the side part of the upper adjusting plate, and a second limiting groove for limiting the movement of the second screw is formed in the second fixing base;

the first fixing base is fixed on the movable bottom plate through a screw, and the second fixing base is fixed on the lower adjusting plate through a screw;

the first screw is screwed to drive the lower adjusting plate to move on the front and back positions on the movable bottom plate; the second screw is screwed to drive the upper adjusting plate to move on the lower adjusting plate at the left and right positions.

The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the first screw or the second screw comprises a screw head, a cylindrical section connected with the screw head and a threaded section; the cylindrical section is provided with a necking part, and the necking part is embedded into the limiting groove to limit the screw to move back and forth without influencing the rotation of the screw.

The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the lower adjusting plate is provided with a first waist-shaped hole in the front-back direction; a third screw penetrates through the first kidney-shaped hole to fix the lower adjusting plate on the movable bottom plate;

and a second waist-shaped hole in the left-right direction is formed in the upper adjusting plate, and a fourth screw penetrates through the second waist-shaped hole to fix the upper adjusting plate on the lower adjusting plate.

The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the clamp assembly comprises a clamp bottom plate fixed on the upper adjusting plate, a positioning assembly and an upper clamp driven by an air cylinder;

the positioning assembly comprises a front positioning assembly and a rear positioning assembly which are positioned on the clamp bottom plate;

the front positioning assembly comprises a first height base plate, a first positioning seat and a first positioning pin which are sequentially distributed from bottom to top, and the first positioning pin is used for being inserted into a front hole of the wiper arm;

the rear positioning assembly comprises a second height base plate, a second positioning seat and a second positioning pin which are sequentially distributed from bottom to top, and the second positioning pin is used for being inserted into a rear hole of the wiper arm;

the upper clamp comprises a support rod and a pressing arm which are connected with an output shaft of the air cylinder; the pressure arm is connected to the support rod;

and a first elastic pressing block and a second elastic pressing block are arranged below the pressing arm and respectively pressed at the front part and the rear part of the upper surface of the wiper arm.

The preferred technical scheme adopted by the invention for solving the technical problems is as follows: a plurality of mounting positions for mounting a first height base plate and a second height base plate are distributed on the clamp bottom plate in an array mode.

The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the clamp bottom plate is connected to the upper adjusting plate through a quick-disassembly type structure.

The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the clamp bottom plate is positioned on the lower adjusting plate through a front positioning pin and a rear positioning pin.

The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the movable bottom plate is driven by a linear lead screw to move back and forth on the working platform.

The preferred technical scheme adopted by the invention for solving the technical problems is as follows: two linear guide rails are arranged between the movable bottom plate and the working platform.

The preferred technical scheme adopted by the invention for solving the technical problems is as follows: the number of the rotary cutters driven by the motor is two, and the rotary cutters are distributed along the working platform in a bilateral symmetry manner; the rotary cutter comprises five coaxially distributed disc cutters, and the outer edges of the disc cutters are saw-tooth-shaped cutting edges; the five disc cutters cut the rough materials at different positions of the head of the wiper arm.

Compared with the prior art, the invention has the advantages that in the processing process of the rim charge of the head of the wiper arm, an operator can drive the movable bottom plate to enable the head of the wiper arm to be basically close to the rotary cutter and opposite to the cutting edge of the rotary cutter, then the accurate adjustment of the position of a clamp for clamping the wiper arm is realized by adjusting the first adjusting device or the second adjusting device, and in addition, the first adjusting device or the second adjusting device realizes the adjustment through the thread matching, so the adjustment precision can be controlled by utilizing the thread pitch of the thread, and the fixing effect is also realized in the adjusting process.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a first schematic structural view of a wiper arm head rim charge cutting device;

FIG. 2 is a second schematic structural view of a wiper arm head rim charge cutting device;

FIG. 3 is a partial view of the structure of the wiper arm head rim charge cutting device;

FIG. 4 is a first schematic view of the clamping base (excluding the movable base plate);

FIG. 5 is a second schematic view of the clamping base (excluding the movable base plate);

FIG. 6 is an exploded view of the holder (excluding the moving baseplate);

FIG. 7 is a schematic view of a first or second adjustment device;

FIG. 8 is a schematic view of the wiper arm in cooperation with a rotary cutter;

fig. 9 is a schematic view of the installation of a wiper arm having a longer length.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the descriptions are illustrative only, exemplary, and should not be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, and are only for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "coupled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, the wiper arm head rim charge cutting apparatus includes a frame 100 having a working platform f, a rotary cutter 300 driven by a motor 200 and disposed on the working platform f, and a holder 400 for holding a wiper arm O and movable in a plane.

Wherein the axis of rotation a of the rotary cutter 300 is parallel to the work platform f. The blade e of the rotary cutter 300 is provided on the outer circumferential surface, and the cross section of the rotary cutter 300 is parallel to the movement path of the holder 400.

As shown in fig. 1 to 3, wherein the cartridge 400 includes a movable base plate 1 movable in a back and forth direction so that the cartridge 400 is integrally close to the rotary cutter 300 and away from the rotary cutter 300.

As shown in fig. 3-6, further, the movable base plate 1 is provided with adjustable bases 2 matching with the number of the rotary cutters 300, and the adjustable bases 2 are provided with clamp assemblies 21 for clamping the wiper arm. The adjustable base 2 comprises a lower adjustment plate 22 adjusted by a first adjustment means 24 and an upper adjustment plate 23 adjusted by a second adjustment means 25. The first and second adjusting

devices

24 and 25 control the lower and

upper adjusting plates

22 and 23, respectively.

The first adjusting device 24 includes a first fixing base 241 and a first screw 242, and a first screw hole Q for screwing the first screw 242 is opened at the rear end of the lower adjusting plate 22; the first fixing base 241 is provided with a first limiting groove W for limiting the movement of the first screw 242; the first screw 242 is screwed to drive the lower adjustment plate 22 to move back and forth on the movable base plate 1.

The second adjusting device 25 comprises a second fixing base 251 and a second screw 252, a second threaded hole for screwing the second screw 252 is formed in the side of the upper adjusting plate 23, and a second limiting groove V for limiting the movement of the second screw 252 is formed in the second fixing base 251; the second screw 252 is screwed to drive the upper regulating plate 23 to move in the left-right position on the lower regulating plate 22.

It should be understood that during the process of processing the rim charge of the wiper arm head, the operator can first move the base plate 1 to make the wiper arm head substantially close to and opposite to the rotary cutter 300, and then adjust the first adjusting device 24 or the second adjusting device 25 to achieve the precise position adjustment.

In this embodiment, since the first screw 242 or the second screw 252 is limited by the limiting groove on the respective fixing base and can only rotate, when the first screw 242 or the second screw 252 is rotated, the radial rotation of the screw can be converted into the axial movement of the upper adjusting plate 23 or the lower adjusting plate 22. Furthermore, the first adjusting device 24 or the second adjusting device 25 can be adjusted by means of a thread fit, so that the thread pitch of the thread can be used to control the precision of the adjustment and at the same time a positioning effect is achieved during the adjustment.

In addition, in this embodiment, set up fore-and-aft regulation and control respectively in two regulating plates, avoided the mutual interference between two adjusting device in addition, when adjusting one of them direction, the precision of another direction is fixed and not changed by the interference in the regulation direction, has consequently further improved and has carried out accurate adjustment to the anchor clamps position of holding the arm of scraping the rain.

As shown in fig. 7, preferably, the first screw 242 or the second screw 252 includes a screw head k, a cylindrical section n connected with the screw head k, and a threaded section m; the cylindrical section n is provided with a necking part m1, and the necking part is embedded into the limit groove to limit the screw to move back and forth without influencing the rotation of the screw. The constricted portion m1 means that its diameter is smaller than the large cylindrical portion m2 or the screw head k attached to one end of the screw head k, and its diameter is also smaller than the diameter of the threaded portion m attached to the adjusting plate. When the first screw 242 or the second screw 252 is disposed on the first fixing base 241 and the second fixing base 251, respectively, the inner end surface of the large cylindrical portion m2 or the screw head k is caught on the outer surface of the fixing base, and the outer end surface of the threaded portion m is caught on the inner surface of the fixing base, so that the first screw 242 or the second screw 252 is axially fixed on the corresponding fixing base.

Preferably, the first fixing base 241 is fixed to the moving base plate 1 by screws, and the second fixing base 251 is fixed to the lower adjustment plate 22 by screws. Therefore, the mutual correlation of the three position adjusting relations of the movable bottom plate 1, the upper adjusting plate 23 and the lower adjusting plate 22 is realized, and the adjustment is more convenient.

As shown in fig. 6, it is further preferable that the lower adjusting plate 22 is provided with a first kidney-shaped hole R in the front-rear direction; a third screw passes through the first kidney-shaped hole R to fix the lower adjustment plate 22 to the moving base plate 1. A second waist-shaped hole T in the left-right direction is formed in the upper adjusting plate 23, and a fourth screw passes through the second waist-shaped hole T to fix the upper adjusting plate 23 on the lower adjusting plate 22. The setting in waist type hole not only starts the guide effect to the removal of each regulating plate, also plays limiting displacement to the removal simultaneously, avoids the excessive displacement of regulating plate.

As shown in fig. 4-6, the clamp assembly 21 in this embodiment includes a clamp base plate 211 fixed to the upper adjustment plate 23, and a positioning assembly and an upper clamp driven by a cylinder. Wherein the positioning assembly comprises a front positioning assembly and a rear positioning assembly located on the fixture base plate 211. The front positioning assembly comprises a first height base plate u, a first positioning seat y and a first positioning pin p which are sequentially distributed from bottom to top, and the first positioning pin p is used for being inserted into a front hole of the wiper arm. The rear positioning assembly comprises a second height base plate h, a second positioning seat j and a second positioning pin z which are sequentially distributed from bottom to top, and the second positioning pin z is used for being inserted into a rear hole of the wiper arm.

It should be noted that, in this embodiment, the first positioning seat y and the first positioning pin p are integrally disposed, and the first positioning seat y is detachably connected to the first height pad u, and the first height pad u is further detachably connected to the fixture base plate 211. The second positioning seat j and the second positioning pin z are integrally arranged, the second positioning seat j is detachably connected with a second height backing plate h, and the second height backing plate h is further detachably connected with the clamp bottom plate 211. Therefore, the universal matching performance of the equipment is improved, the positioning height of the lower part of the clamp assembly 21 can be adjusted according to the wiper arms with different structures, and the clamping force and the clamping precision are ensured to meet the requirements.

Preferably, a plurality of mounting positions for mounting the first height shim plate u and the second height shim plate h are distributed on the clamp base plate 211 in an array manner. Be equipped with first installation screw thread punch combination on the high backing plate, first installation screw thread punch combination includes the screw of central line and last regulating plate 23 moving direction syntropy, and then when anchor clamps bottom plate 211 along a plurality of screws of array distribution on all around the vertical direction, and when distance, aperture setting and first installation screw thread punch combination match, can realize the suitability installation of high backing plate and anchor clamps bottom plate 211 multiple position.

Fig. 9 shows that the second clamp assembly 21 'is replaced to be suitable for another second wiper arm O' with a longer length.

As shown in fig. 4-6, further, the upper clamp includes a strut 10 and a pressing arm 20 connected to the output shaft of the cylinder; the pressing arm 20 is connected to the support rod 10; the pressing arm 20 comprises a transverse pressing part 20a provided with a first elastic pressing block 201 and a second elastic pressing block 202, and the first elastic pressing block 201 and the second elastic pressing block 202 are respectively pressed on the front part and the rear part of the upper surface of the wiper arm. The elastic pressing block is adopted firstly to avoid clamping damage to the wiper arm, and secondly, the elastic pressing block can be used for adjusting the clamping height.

As shown in fig. 5, the jig base plate 211 is coupled to the upper adjustment plate 23 by a quick-release structure. The clamp base plate 211 is positioned on the lower adjustment plate 22 by a front positioning pin L1 and a rear positioning pin L2.

As shown in fig. 1 to 3, the movable base plate 1 is preferably movable back and forth on the work platform f by a linear screw drive 500. Or the movable bottom plate 1 is driven by the pen type air cylinder to move back and forth. Two linear guide rails 80 are arranged between the movable bottom plate 1 and the working platform f. The moving base plate 1 moves forward and backward along the linear guide 80. Preferably, the working platform f is provided with a starting switch. More preferably, the left side and the right side of the working platform f are provided with the starting switches G, so that the operation of operators at different positions is facilitated.

As shown in fig. 1 to 8, the rotary tools 300 and the motors are disposed on a supporting platform protruding from the working platform f, and the number of the rotary tools 300 driven by the motors 200 is two, and the rotary tools are symmetrically distributed along the working platform f. The rotary cutter 300 comprises a plurality of coaxially distributed disc cutters 301, in the embodiment, according to the structural characteristics, the number of the disc cutters is five, and the outer edges of the disc cutters are saw-tooth-shaped cutting edges e; the disc cutters are mutually overlapped, so that the cutting edge e of each disc cutter forms an irregular surface matched with the head of the wiper arm, and the five disc cutters cut the rough materials at different positions of the head of the wiper arm.

The present invention provides a wiper head edge trim cutting device, which is described in detail above, and the principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the examples is only used to help understanding the present invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The device for cutting off the rim charge at the head of the wiper arm is characterized by comprising a frame with a working platform, a rotary cutter and a movable bottom plate, wherein the rotary cutter and the movable bottom plate are arranged on the working platform and driven by a motor;

the first screw is screwed to drive the lower adjusting plate to move on the front and back positions on the movable bottom plate; the second screw is screwed to drive the upper adjusting plate to move on the left and right positions on the lower adjusting plate;

the lower adjusting plate is provided with a first waist-shaped hole in the front-back direction; a third screw penetrates through the first kidney-shaped hole to fix the lower adjusting plate on the movable bottom plate;

a second waist-shaped hole in the left-right direction is formed in the upper adjusting plate, and a fourth screw penetrates through the second waist-shaped hole to fix the upper adjusting plate on the lower adjusting plate;

the rotary cutter is formed by mutually overlapping a plurality of coaxially distributed disc cutters, the outer edges of the disc cutters are saw-tooth-shaped cutting edges, and the cutting edges of the disc cutters form an irregular surface matched with the head of the wiper arm.

2. The wiper arm head rim charge cut-off device of claim 1, wherein the first or second screw comprises a screw head, a cylindrical section connected to the screw head, and a threaded section; the cylindrical section is provided with a necking part, and the necking part is embedded into the limiting groove to limit the screw to move back and forth without influencing the rotation of the screw.

3. The wiper arm head scrap cutting apparatus in accordance with claim 1 wherein said clamp assembly comprises a clamp base plate secured to an upper adjustment plate, a positioning assembly and an upper clamp driven by a cylinder;

4. The device for cutting off the rim charge at the head of the wiper arm as claimed in claim 3, wherein a plurality of mounting positions for mounting the first height pad and the second height pad are distributed on the bottom plate of the fixture in an array.

5. The wiper arm head trim cut out apparatus of claim 4, wherein the clip base plate is attached to the upper adjustment plate by a quick disconnect construction.

6. The wiper arm head edge trim cut-off device of claim 5, wherein the clamp base plate is positioned on the lower adjustment plate by a front positioning pin and a rear positioning pin.

7. The device for cutting off the rim charge at the head of the wiper arm as claimed in claim 1, wherein the movable base plate is driven by a linear lead screw to move back and forth on the working platform.

8. The device for cutting off the rim charge at the head of the wiper arm as claimed in claim 7, wherein two linear guides are provided between the movable base plate and the working platform.

9. The device for cutting off the rim charge at the head of the wiper arm as claimed in claim 1, wherein the number of the rotary cutters driven by the motor is two, and the rotary cutters are symmetrically distributed along the working platform.