CN217749102U

CN217749102U - Wiper swing arm crotch mould of roughly bending

Info

Publication number: CN217749102U
Application number: CN202221962671.2U
Authority: CN
Inventors: 黄伟津
Original assignee: Guangdong Haojing Precision Parts Co ltd
Current assignee: Guangdong Haojing Precision Parts Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-11-08
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a thick mould of bending of wiper swing arm crotch, its lower bolster has along the first movable mold insert and the second movable mold insert of X axle direction translation action in opposite directions, first movable mold insert is equipped with the arc groove unanimous with the radian of the excircle arc wall of crotch towards a side end face of the movable mold insert of second, the second movable mold insert has the wire rod extrusion of pushing away the original wire rod section of wiper swing arm towards the arc groove and pushes away and insert, the head that the wire rod extrusion was pushed away and is inserted has the arc end unanimous with the radian of the interior arc wall of crotch, the lower bolster has along the third movable mold insert and the fourth movable mold insert of Y axle direction translation action in opposite directions, first movable mold insert is pushed away by the hydro-cylinder drive towards the second movable mold insert translation back that targets in place, push away by the wire rod extrusion wiper swing arm wire rod, the third simultaneously, fourth movable mold insert action restricts the restraint to the wiper swing arm wire rod from both sides respectively, make the wiper swing arm pushed away by the wire rod extrusion and insert and bend in crotch shaping district and form the U-shaped crotch.

Description

Wiper swing arm crotch mould of roughly bending

Technical Field

The utility model belongs to the technical field of wiper swing arm production and processing, concretely relates to wiper swing arm punching press machine-shaping's crotch mould of bending.

Background

When the oscillating arm of the windscreen wiper is produced and processed by a spring machine, the bending and hook forming of the oscillating arm of the windscreen wiper are finished by sequentially and step-by-step actions of all mechanical arms on the spring machine, the forming mode is specifically bending through single-point acting force of the mechanical arms of the spring machine during the bending forming, and the hook at the front section of the oscillating arm of the windscreen wiper has poor structural stability and needs to be improved in structural strength under the forming mode; in order to solve the problem, the production and processing steps of the oscillating arm of the windscreen wiper can be decomposed, all the processing steps are completed in a step-by-step stamping mode through a punch press, after an original wire rod section with a required length before the oscillating arm of the windscreen wiper is bent and molded is cut and cut on a continuous wire rod in a punching mode, hook processing and molding at the front end of the oscillating arm of the windscreen wiper is performed in a stamping mode, the hook processing and molding link is specifically decomposed into three independent and separated stamping processing steps of hook rough bending, fine bending and side pressure shaping, in the hook rough bending step, the front end of the original wire rod section of the oscillating arm of the windscreen wiper needs to be bent and molded into a U-shaped hook in a stamping mode through a stamping die, and a hook rough bending die needs to be designed correspondingly.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a install wiper swing arm crotch mould of bending thick of being used for on the punch press bending the shaping out the U-shaped crotch of the front end punching press of the original wire rod section of wiper swing arm.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a wiper swing arm hook rough bending die comprises a lower die assembly and an upper die assembly, wherein the lower die assembly is mounted on a workbench at the lower part of a punch press, the upper die assembly is mounted on a punching mechanism at the upper part of the punch press, a lower die plate is arranged at the top of the lower die assembly, an upper die plate is arranged at the bottom of the upper die assembly, a guide column is connected between the upper die plate and the lower die plate, the lower die plate is provided with a first movable insert and a second movable insert which move in a translational motion along the X-axis direction in an opposite direction, an arc groove with the same radian as that of an outer arc wall of a hook is arranged on one side end face of the first movable insert facing the second movable insert, the second movable insert is provided with a wire extruding and pushing insert which extrudes and pushes an original wire section of a wiper swing arm towards the arc groove, the head of the wire extruding and pushing insert is provided with an arc end with the same radian as that of an inner arc wall of the hook, and two sides of the arc end are extended with plane walls; the lower template is provided with a third movable insert and a fourth movable insert which move in a translation manner along the Y-axis direction in the opposite direction, a hook forming area is formed among the first movable insert, the second movable insert, the third movable insert and the fourth movable insert, the opposite end surfaces of the third movable insert and the fourth movable insert are provided with lateral pushing flat walls, one sides of the third movable insert and the fourth movable insert, which face the wire pushing insert, are respectively provided with a wire supporting flat wall, spring thimbles protruding out of the wire supporting flat wall are respectively embedded in the third movable insert and the fourth movable insert, and an arc corner is formed between the wire supporting flat wall and the lateral pushing flat walls; the method comprises the steps that an original wire section of a swing arm of the windscreen wiper is placed and positioned between an arc end and a spring thimble, after a first movable insert is driven by an oil cylinder to translate towards a second movable insert in place, a stamping mechanism drives an upper die plate to press and push the second movable insert downwards to translate towards the first movable insert, and pushes a third movable insert and a fourth movable insert to translate towards each other, an inserting block is pushed by a wire rod to extrude the wire rod of the swing arm of the windscreen wiper, the wire rod of the swing arm of the windscreen wiper is limited and restrained from two sides by the actions of the third movable insert and the fourth movable insert respectively, the wire rod of the swing arm of the windscreen wiper is extruded and bent in a bent hook forming area to form a U-shaped bent hook, the U-shaped bent hook is arranged on a punch press and can be formed at the front end of the original wire section of the swing arm of the windscreen wiper in a stamping and bending mode, and the method is suitable for the rough bending processing link of the bent hook in multi-step stamping production of the bent arm bent hook of the windscreen wiper.

Preferably, the second movable insert, the third movable insert and the fourth movable insert are respectively and elastically connected and slidably arranged on the lower template, the second movable insert, the third movable insert and the fourth movable insert protrude above the plate surface of the lower template, the outer ends of the second movable insert, the third movable insert and the fourth movable insert are provided with first inclined surface walls, the bottom surface of the upper template is respectively provided with a lower extrusion push block corresponding to the second movable insert, the third movable insert and the fourth movable insert in a downward protruding mode, and the inner end of the lower extrusion push block is provided with a second inclined surface wall matched with the first inclined surface wall; when the punch presses to perform stamping action, the lower pressing and extruding push block of the upper template acts on the first inclined wall of the lower template through the second inclined wall of the upper template to push the second movable insert, the third movable insert and the fourth movable insert to perform translational action so as to bend the front end of the original wire section of the oscillating arm of the windscreen wiper.

Preferably, the second movable insert, the third movable insert and the fourth movable insert are respectively embedded in the lower template and are respectively fixedly installed on the spring rods, the spring rods penetrate out of the lower template, the outer side of the lower template is sleeved with the return spring, the end part of the outer end of the spring rod is provided with a spring stop part, and the return spring is positioned between the spring stop part and the lower template; after the front end of the original wire section of the oscillating arm of the windscreen wiper is punched and bent, the upper die assembly is lifted and reset, the second movable insert, the third movable insert and the fourth movable insert automatically reset under the action of a reset spring, the first movable insert resets under the driving of the oil cylinder, the first movable insert, the second movable insert, the third movable insert and the fourth movable insert are separated again, and therefore a windscreen wiper oscillating arm workpiece with a roughly bent U-shaped hook can be taken out conveniently.

Preferably, the second movable insert further comprises a pushing insert seat fixedly connected with the spring rod, the pushing insert seat is slidably arranged on the lower template, the first inclined wall is arranged on the pushing insert seat, the wire rod pushing insert is embedded and connected to the pushing insert seat, a stop corner is formed at a connecting part of the pushing insert seat and the wire rod pushing insert, a limit block is arranged on the lower template, the limit block is matched with the stop corner in a positioning manner after the wire rod pushing insert moves in place in a translation direction towards the first movable insert, and the limit block can limit the stroke of the second movable insert pushing swing arm of the windscreen wiper.

Preferably, the lower die assembly further comprises a lower die base positioned at the bottom end and a lower cushion plate fixedly arranged between the lower die base and the lower die plate, and the upper die assembly is provided with a damping spring connected to the upper die plate on the back of the upper die plate; the damping spring is arranged to buffer the reaction force of the movable insert when the downward extrusion push block acts on the second movable insert, the third movable insert and the fourth movable insert, so that the downward extrusion push block and the upper template are prevented from being damaged by impact, and the maintenance cost and frequency are increased.

The utility model discloses following beneficial effect has:

the utility model discloses thick mould of bending of wiper swing arm crotch, after first movable mold insert put in place by oil cylinder drive towards the translation of second movable mold insert, crowded push of wire rod by the movable mold insert of second extrudees the extrusion wiper swing arm wire rod of inserting, simultaneously carry out restriction restraint to wiper swing arm wire rod from both sides respectively by the action of third movable mold insert and fourth movable mold insert, make wiper swing arm wire rod crowded push away insert the extrusion in crotch shaping district and bend and form the U-shaped crotch, install and to go out the U-shaped crotch with the punching press mode shaping in the front end that can be used for at the original wire rod section of wiper swing arm on the punch press, can be applicable to the thick processing link of bending of crotch of wiper swing arm crotch substep punching press production.

Drawings

Fig. 1 is a top view of the rough bending die for the swing arm hook of the windscreen wiper of the present invention;

fig. 2 is a front view of the rough bending die for the swing arm hook of the windscreen wiper of the utility model;

FIG. 3 is a side view of the rough bending die for the swing arm hook of the wiper of the present invention;

fig. 4 is the utility model discloses wiper swing arm crotch thick mould of bending's local structure chart.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments so as to more clearly understand the technical idea claimed in the invention.

The wiper arm swing hook rough bending die shown in fig. 1-4 comprises a lower die assembly 1 mounted on a lower workbench of a punch press and an upper die assembly 2 mounted on a punching mechanism on the upper part of the punch press, the type of the punch press which is particularly applicable is not limited, the punching mechanism for driving the upper die assembly 2 belongs to a driving mechanism of the punch press, the installation and the fixation of the punching mechanism and the upper die assembly 2 belong to conventional technical means, and no additional statement is made herein. The top of the lower die assembly 1 is provided with a lower die plate 11, the bottom of the upper die assembly 2 is provided with an upper die plate 21, a guide post 3 is connected between the upper die plate 21 and the lower die plate 11, the lower die plate 11 is provided with a first movable insert 12 and a second movable insert 13 which perform opposite translation motion along the X-axis direction shown by the coordinates in fig. 1, one side end face of the first movable insert 12 facing the second movable insert 13 is provided with an arc groove 14 consistent with the radian of the outer arc wall of the hook, the second movable insert 13 is provided with a wire extruding and pushing insert 15 which extrudes and pushes the original wire section 100 of the swing arm of the windscreen wiper towards the arc groove 14, the head of the wire extruding and pushing insert 15 is provided with an arc end 16 consistent with the radian of the inner arc wall of the hook, and two sides of the arc end 16 are extended with plane walls 17.

The lower template 11 further has a third movable insert 18 and a fourth movable insert 19 which are moved in a translational motion in a Y-axis direction shown by a coordinate in fig. 1, a hook forming area 110 is formed between the first movable insert 12, the second movable insert 13, the third movable insert 18 and the fourth movable insert 19, lateral pushing flat walls 111 are arranged on the facing end surfaces of the third movable insert 18 and the fourth movable insert 19, spring ejector pins 113 protruding out of the wire supporting flat walls 112 are respectively embedded in the third movable insert 18 and the fourth movable insert 19, and an arc corner 114 is formed between the wire supporting flat walls 112 and the lateral pushing flat walls 111; the original wire section 100 of the swing arm of the wiper is placed and positioned between the arc end 16 and the spring thimble 113, after the first movable insert 12 is driven by the oil cylinder 115 to translate towards the second movable insert 13 in place, the stamping mechanism drives the upper template 21 to press and push the second movable insert 13 downwards to translate towards the first movable insert 12, and pushes the third movable insert 18 and the fourth movable insert 19 to translate towards each other, the wire pushing insert 15 extrudes the swing arm wire of the wiper, and the third movable insert 18 and the fourth movable insert 19 respectively limit and restrict the swing arm wire of the wiper from two sides, so that the swing arm wire of the wiper is extruded and pushed by the wire pushing insert 15 in the hook forming area 110 to form a U-shaped hook, and the swing arm original wire section 100 of the wiper is arranged on a punch press and can be used for forming the U-shaped hook at the front end of the original wire section 100 of the swing arm of the wiper in a stamping and bending way, and can be suitable for a hook rough bending link of the step-by the swing arm hook of the wiper.

In this embodiment, the second removable insert 13, the third removable insert 18, and the fourth removable insert 19 are respectively elastically connected and slidably disposed on the lower mold plate 11, for example, an insert groove is formed on the top surface of the lower mold plate 11, and a press block insert is tightly attached to the top surface of the lower mold plate 11 to insert and slidably connect the respective removable inserts to the lower mold plate 11, the second removable insert 13, the third removable insert 18, and the fourth removable insert 19 are protruded on the surface of the lower mold plate 11, and a first inclined wall 116 is formed at the outer end of the second removable insert 13, the third removable insert 18, and the fourth removable insert 19, respectively, a lower extrusion pusher 22 is protruded from the bottom surface of the upper mold plate 21 corresponding to the second removable insert 18, the third removable insert 18, and the fourth removable insert 19, and a second inclined wall 23 matched with the first inclined wall 116 is formed at the inner end of the lower extrusion pusher 22, and the second inclined wall 23 of the lower extrusion pusher 22 is used to push the second removable insert 13, the third removable insert 18, and the fourth removable insert 19 to be translated and bend the front end of the wire segment 100 of the wiper blade segment of the original movable insert. The lower die assembly 1 further comprises a lower die base 1110 located at the bottom end and a lower cushion 1111 fixedly arranged between the lower die base 1110 and the lower die plate 11, a damping spring 24 connected to the upper die plate 21 is arranged on the back surface, located on the upper die plate 21, of the upper die assembly 2, and the damping spring 24 is arranged to buffer the reaction force of the movable inserts when the lower extrusion push block 22 acts on the second movable insert 13, the third movable insert 18 and the fourth movable insert 19, so that the lower extrusion push block 22 and the upper die plate 21 are prevented from being damaged due to impact, and the maintenance cost and frequency are increased.

The second movable insert 13, the third movable insert 18 and the fourth movable insert 19 are further respectively mounted and fixed on a spring rod 117, the spring rod 117 penetrates out of the lower die plate 11, a return spring 118 is sleeved on the outer side of the lower die plate 11, a spring stop portion 119 is arranged at the end portion of the outer end of the spring rod 117, the return spring 118 is positioned between the spring stop portion 119 and the lower die plate 11, after the front end of the original wire section 100 of the swing arm of the windscreen wiper is punched and bent, the upper die assembly 2 is lifted and reset, the second movable insert 13, the third movable insert 18 and the fourth movable insert 19 automatically reset under the action of the return spring 118, the first movable insert 12 resets under the driving of an oil cylinder 115, the first movable insert 12, the second movable insert 13, the third movable insert 18 and the fourth movable insert 19 are separated again, and therefore a windscreen wiper swing arm workpiece with a roughly bent U-shaped hook can be conveniently taken out.

The wire extruding and pushing insert 15 of the second movable insert 13 is specifically embedded and connected to the extruding and pushing insert seat 151, the extruding and pushing insert seat 151 is fixedly connected with the spring rod 117, the extruding and pushing insert seat 151 is slidably arranged on the lower template 11, the first inclined surface wall 116 is also arranged on the extruding and pushing insert seat 151, a stop corner 152 is formed at the connecting part of the extruding and pushing insert seat 151 and the wire extruding and pushing insert 15, a limit block 153 is arranged on the lower template 11, the limit block 153 is in positioning fit with the stop corner 152 after the wire extruding and pushing insert 15 moves in place towards the first movable insert 12 in a translation manner, and the limit block 153 can limit the stroke of the second movable insert 13 for extruding and pushing the wiper wire swing arm.

Various other changes and modifications may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such changes and modifications should fall within the scope of the present invention.

Claims

1. A wiper swing arm hook rough bending die comprises a lower die assembly and an upper die assembly, wherein the lower die assembly is mounted on a workbench at the lower part of a punch press, the upper die assembly is mounted on a punching mechanism at the upper part of the punch press, a lower die plate is arranged at the top part of the lower die assembly, an upper die plate is arranged at the bottom part of the upper die assembly, and a guide column is connected and arranged between the upper die plate and the lower die plate; the lower template is provided with a third movable insert and a fourth movable insert which move in a translation manner in the Y-axis direction, a hook forming area is formed among the first movable insert, the second movable insert, the third movable insert and the fourth movable insert, lateral pushing flat walls are arranged on the opposite end faces of the third movable insert and the fourth movable insert, wire supporting flat walls are respectively arranged on one sides, facing the wire pushing insert, of the third movable insert and one side, facing the wire pushing insert, of the fourth movable insert, spring ejector pins protruding outwards from the wire supporting flat walls are respectively embedded in the third movable insert and the fourth movable insert, and arc corners are formed between the wire supporting flat walls and the lateral pushing flat walls; and after the original wire section of the oscillating arm of the windscreen wiper is positioned between the arc end and the spring thimble, the first movable insert is driven by the oil cylinder to translate towards the second movable insert in place, and the stamping mechanism drives the upper template to press and push the second movable insert to translate towards the first movable insert and pushes the third movable insert and the fourth movable insert to translate towards each other.

2. The rough bending die for the swing arm hooks of the windscreen wiper of claim 1, wherein the second movable insert, the third movable insert and the fourth movable insert are respectively and elastically connected and slidably disposed on the lower die plate, the second movable insert, the third movable insert and the fourth movable insert protrude from the surface of the lower die plate, first bevel walls are disposed at the outer ends of the second movable insert, the third movable insert and the fourth movable insert, lower extrusion push blocks are respectively protruded from the bottom surface of the upper die plate corresponding to the second movable insert, the third movable insert and the fourth movable insert, and second bevel walls matched with the first bevel walls are disposed at the inner ends of the lower extrusion push blocks.

3. The rough bending die for the wiper swing arm hook of claim 2, wherein the second movable insert, the third movable insert and the fourth movable insert are respectively embedded in the lower die plate and are respectively mounted and fixed on a spring rod, the spring rod penetrates out of the lower die plate, a return spring is sleeved on the outer side of the lower die plate, a spring stop portion is arranged at the end portion of the outer end of the spring rod, and the return spring is positioned between the spring stop portion and the lower die plate.

4. The wiper swing arm hook rough bending die of claim 3, wherein the second movable insert further comprises a push-out insert seat fixedly connected with the spring rod, the push-out insert seat is slidably disposed on the lower die plate, the first inclined wall is disposed on the push-out insert seat, the wire push-out insert is embedded and connected to the push-out insert seat, a stop corner is formed at a connecting portion of the push-out insert seat and the wire push-out insert, and a limit block is mounted on the lower die plate and is positioned and matched with the stop corner after the wire push-out insert is translated in place towards the first movable insert.

5. The rough bending die for the hooks of the oscillating arm of the windscreen wiper as claimed in any one of claims 1 to 4, wherein the lower die assembly further comprises a lower die holder positioned at the bottom end and a lower cushion plate fixedly arranged between the lower die holder and the lower die plate, and the upper die assembly is provided with a damping spring connected to the upper die plate on the back surface of the upper die plate.