CN117259604B

CN117259604B - Cage type elastic sheet forming equipment and forming method thereof

Info

Publication number: CN117259604B
Application number: CN202311286283.6A
Authority: CN
Inventors: 胡安; 袁全港; 王韦韦; 王成
Original assignee: Suzhou Zhaoneng Precision Spring Hardware Co ltd
Current assignee: Suzhou Zhaoneng Precision Spring Hardware Co ltd
Priority date: 2023-10-07
Filing date: 2023-10-07
Publication date: 2026-01-23
Anticipated expiration: 2043-10-07
Also published as: CN117259604A

Abstract

This invention belongs to the field of spring sheet processing and relates to a cage-type spring sheet forming equipment, including a mold base, a modular assembly mounted on the mold base, and multiple forming components distributed around the modular assembly. The modular assembly includes a main module and an auxiliary module that can be driven to retract into the mold base. The multiple forming components cooperate with the main module and the auxiliary module respectively to bend pre-formed flat wire into a cage-type spring sheet. The main module has a forming wall 1 for forming the left bend of the cage-type spring sheet, a forming wall 2 for forming the back of the cage-type spring sheet, and a forming wall 3 for forming the right bend of the cage-type spring sheet. The auxiliary module is located to the side and below the main module. The auxiliary module has an auxiliary forming wall for forming the tail fold of the cage-type spring sheet and a apex opposite to the auxiliary forming wall. The distance between the apex and the main module is less than the thickness of the flat wire. This invention has a compact structure, allows multiple processes to be carried out simultaneously, and has high processing efficiency.

Description

Cage type elastic sheet forming equipment and forming method thereof

Technical Field

The invention belongs to the technical field of spring piece processing, and particularly relates to cage spring piece forming equipment and a forming method thereof.

Background

The cage spring is a common accessory product for completing electrical connection, and is electrically connected with the cage spring to realize the functions of locking and fixing electrical elements such as cables, conducting plates and the like, conducting circuits and the like.

Fig. 1 illustrates a conventional cage spring, which comprises a head folding edge 11, a back 12 and a tail folding edge 13, wherein an arc-shaped right elbow 14 is arranged at the joint of the head folding edge 11 and the back 12, an arc-shaped left elbow 15 is arranged at the joint of the tail folding edge 13 and the back 12, a rectangular window 16 is arranged at the tail folding edge 13, the width of the end part of the head folding edge 11 is narrowed and is inserted into the window 16, and a certain gap is reserved between the end part and two sides of the window 16, so that the head folding edge has no friction phenomenon with the two sides of the window in the moving process.

The utility model discloses a traditional cage type spring sheet forming machine, for example, an utility model patent disclosed by CN208099049U, which comprises a machine base of a spring forming machine, wherein a fixed end plate is arranged on the machine base of the spring forming machine, fixed guide frames are arranged on the front surface of the fixed end plate at intervals along the circumference, a movable frame is arranged on each fixed guide frame and is in sliding fit with the fixed guide frames, an operation head is arranged at the inner end of each movable frame, the outer end of each movable frame is connected with a cam plate, each cam plate is connected with a rotary disc, each rotary disc is connected with a rotary shaft penetrating through the fixed end plate, and a mandrel is arranged in the middle of the fixed end plate. However, the forming machine is provided with the cutter head, the plurality of bending heads and the plurality of buckling heads respectively to realize respective functions, for example, the cutter head 17 is matched with the cushion block 24 to realize cutting of the steel belt, the bending head I18, the bending head II 19, the bending head III 20, the bending head IV 21 are matched with the mandrel 11 to realize arc pressing and bending operation, the buckling head I22 is matched with the buckling head II 23 to complete buckling operation, the working procedure is complicated, the processing beat is slow, the efficiency is low, the equipment structure is complex and heavy, the manufacturing cost is high, and popularization and use are not facilitated.

Disclosure of Invention

Aiming at the prior art, the invention provides cage type elastic sheet forming equipment with high processing efficiency and compact structure.

A cage type elastic sheet forming device comprises a die holder, a module assembly arranged on the die holder and a plurality of forming assemblies distributed around the module assembly;

the module assembly comprises a main module and an auxiliary module which can be driven to retract into the die holder, the forming assemblies are respectively matched with the main module and the auxiliary module to fold the preformed flat wire into a cage-shaped elastic sheet, and the forming assemblies are used for forming the cage-shaped elastic sheet by bending the preformed flat wire, wherein:

the main module is provided with a first forming wall for forming a left elbow of the cage-type elastic sheet, a second forming wall for forming the back of the cage-type elastic sheet and a third forming wall for forming a right elbow of the cage-type elastic sheet;

The auxiliary module is located the side below of main module, the auxiliary module is equipped with the auxiliary shaping wall that is used for shaping the afterbody hem of cage shell fragment and with the apex angle that auxiliary shaping wall is relative, the apex angle with the interval of main module is less than flat wire's thickness.

Preferably, the die holder is provided with a jack post in a telescopic manner, the top angles of the jack post and the auxiliary module are respectively positioned at the left lower part and the right upper part of the main module, and the jack post and the auxiliary module can simultaneously extend out of the die holder to eject the cage-shaped elastic sheet sleeved on the main module.

Preferably, the forming assembly comprises a forming assembly I with a bending blade I and a bending blade II;

In a first stroke of the first forming assembly, the first bending blade and the auxiliary module are matched to form a tail flanging, and after the first stroke is finished, the auxiliary module is retracted into the die holder;

In the second stroke of the first forming assembly, the second bending blade and the main module are matched to form a left elbow.

Preferably, the forming assembly further comprises a forming assembly II with a bending blade III and a bending blade IV, and a forming assembly III with a bending blade V and a cutting blade, wherein the forming assembly II is oppositely arranged with the forming assembly III;

In a third stroke of the three-phase movement of the second forming assembly and the forming assembly, the cutting edge cuts off the flat wire, and the bending edge five and the bending edge three are matched to form the head folded edge of the cage-shaped elastic sheet;

in a fourth continuous descending stroke of the second forming assembly, the fourth bending blade is matched with the third forming wall of the main module to form a right elbow in a preformed mode.

Preferably, the forming assembly further comprises a forming assembly four with a bending blade six, and the bending blade six can be matched with a forming wall three of the main module to form a right elbow;

The forming assembly further comprises a forming assembly five of a bending blade seven, and the bending blade seven can be matched with the forming wall two of the main module to form the back of the cage-type elastic sheet.

Further, a supporting block is arranged on the die holder in a telescopic manner relative to the die holder, and the supporting block is provided with a first supporting wall used for supporting the main module and a second supporting wall used for supporting the auxiliary module;

the back of the supporting block is provided with an avoidance cavity for avoiding the tail folded edge;

The support block is pushed forward or pulled backward by the auxiliary module.

Preferably, the support block is also provided with a force-bearing part extending to the front of the auxiliary module, and the force-bearing part is made of ferromagnetic material;

When the support block is required to support the main module and the auxiliary module, the electromagnet of the auxiliary module is tensioned and clings to the stress part, so that the first support wall of the support block is supported below the main module, and the second support wall is supported on the side edge of the auxiliary module;

When the cage spring plate is required to be jacked from the main module, the electromagnet of the auxiliary module pushes the supporting block forwards, so that the supporting block is far away from the main module.

Preferably, a ball spring pin is arranged on the die holder, a pushing positioning groove and a pulling positioning groove are correspondingly arranged on the supporting block, when the electromagnet pushes the supporting block in place, a ball of the ball spring pin is inserted into the pushing positioning groove, and when the electromagnet pulls the supporting block in place, the ball is inserted into the pulling positioning groove.

Another object of the present invention is to disclose a method for forming a cage spring, comprising the steps of:

the main module and the auxiliary module extend out of the die holder, and the preformed flat wire is fed above the main module;

The first forming assembly is matched with the auxiliary module to form the tail folded edge and the left elbow of the cage-type elastic sheet respectively, wherein:

in a second stroke of the first forming assembly, the second bending blade and the main module are matched to form a left elbow;

The other forming assemblies are matched with the main module to form a right elbow of the cage-type elastic sheet, and the head folded edge is inserted into a window of the tail folded edge to obtain the cage-type elastic sheet;

the auxiliary module and the jacking column push the lower left corner and the upper right corner of the cage-type elastic sheet forward at the same time, and jack the cage-type elastic sheet away from the main module.

Preferably, a supporting block is arranged on the die holder in a telescopic manner relative to the die holder, and is provided with a first supporting wall for supporting the main module and a second supporting wall for supporting the auxiliary module;

The front side of the auxiliary module is provided with an electromagnet, and the magnetic poles of the electromagnet can be changed so as to alternately push and pull the stress part;

The method for forming the cage spring further comprises the step that the supporting block is pushed forward or pulled backward by the auxiliary module, wherein:

The electromagnet of the auxiliary module extending out of the die holder is tensioned and clings to the stress part, so that the first supporting wall of the supporting block is supported below the main module, and the second supporting wall is supported on the side edge of the auxiliary module;

After the cage-type elastic sheet is obtained by molding, the current of the electromagnet is commutated to enable the magnetic pole to be changed, the auxiliary module and the jacking column are pushed forward by the driving mechanism at the same time, the supporting block is synchronously pushed away from the lower part of the main module, and the cage-type elastic sheet is jacked from the main module.

The beneficial effects of the invention are as follows:

The invention is provided with two modules, namely the main module and the auxiliary module, which are used for forming the cage-type elastic sheet, the auxiliary module is telescopically assembled on the die holder, the auxiliary module can extend out of the die holder to be matched with the forming knife to bend the tail folded edge of the cage-type elastic sheet, and can retract into the die holder to avoid interference with the forming knife, and the cage-type elastic sheet is automatically jacked from the main module when the auxiliary module extends out again, so that multiple processes are performed simultaneously, and the processing efficiency is improved. The structure also solves the problem that two driving devices are difficult to simultaneously install in a narrow space to respectively drive the main module and the auxiliary module to stretch out and draw back.

The invention is provided with two modules, namely a main module and an auxiliary module, which are used for forming the cage-shaped elastic sheet, the two modules are matched with the first forming cutter, and the tail folded edge and the left elbow are respectively formed by the first bending edge and the first bending edge of the first forming cutter, namely, the work of the two forming cutters in the conventional equipment is completed in two continuous strokes of the first forming cutter, and the processing time is obviously shortened.

The forming assembly II and the forming assembly III are oppositely arranged, the forming assembly II is provided with the bending blade III and the bending blade IV, and the forming assembly III is provided with the bending blade five and the cutting blade, so that in a third stroke of opposite movement of the forming assembly II and the forming assembly III, the cutting blade cuts off a flat wire, and simultaneously the bending blade five and the bending blade III are matched with each other to form the head hem of the cage-type elastic sheet, and in a fourth stroke of continuous descending of the forming assembly II, the bending blade IV and the forming wall III of the main module are matched with each other to perform a right elbow, so that the functions of cutting off, forming the head hem and performing the right elbow of conventional equipment can be realized in a reciprocating movement process by only two forming blades.

According to the invention, the supporting block is arranged below the main module, so that the main module and the auxiliary module can be supported simultaneously, and the main module can also be supported independently, and the module assembly is prevented from being deformed by stamping of the forming knife. The supporting block is pushed forward or pulled backward by the electromagnet on the auxiliary module, so that the switching between a non-working state and a working state is realized, the stroke of the supporting block moving back and forth is small, the switching action of the non-working state and the action of the auxiliary module pushing the cage-type elastic sheet are carried out simultaneously, the processing beat of a product is further shortened, and the processing efficiency is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

FIG. 1 is a diagram of the cage spring of the present invention;

FIG. 2 is a top view block diagram of a preformed flat wire of the present invention;

FIG. 3 is a schematic front view of the head flange according to embodiment 1 of the present invention;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

FIG. 5 is a schematic view of the front view of the present invention when forming the tail folds;

FIG. 6 is an enlarged schematic view of portion B of FIG. 5;

FIG. 7 is a schematic view of the main and auxiliary modules of the present invention on a die holder;

FIG. 8 is a schematic diagram of the front view of the auxiliary module and the jack to simultaneously push the cage spring;

FIG. 9 is a schematic perspective view of the other view of FIG. 8;

Fig. 10 is a schematic diagram showing a front view of the supporting block for supporting the main module and the auxiliary module in embodiment 2;

FIG. 11 is a schematic cross-sectional view of the support block supporting the main module and the auxiliary module as seen in the direction C-C in FIG. 10;

Fig. 12 is a schematic sectional view in the direction D-D in fig. 11.

1. Cage spring plate, 11, head edge, 12, back, 13, tail edge, 14, right elbow, 15, left elbow, 16, window, 17, elbow intermediate;

2. pre-formed flat wire, 21, pre-broken wire;

3. a die holder; 31, positioning holes, 32, ball spring pins;

41. primary module 411, molded wall one, 412, molded wall two, 413, molded wall three, 42, auxiliary module 421, auxiliary molded wall, 422, vertex angle 423, electromagnet;

51. a first forming cutter, 511, a first bending blade, 512, a second bending blade;

52. 521, bending edge III, 522, bending edge IV;

53. 531, bending the blade five, 532, cutting edge;

54. 541, bending blade six;

55. 551, bending the blade seven;

6. A top column;

7. the device comprises a supporting block, a pushing positioning groove, a pulling and moving positioning groove, a first supporting wall, a second supporting wall, a avoiding cavity, a force bearing part and a force bearing part.

Detailed Description

Example 1

The cage type spring piece forming device of the embodiment is used for forming the cage type spring piece 1 shown in fig. 1. The preformed flat wire 2 shown in fig. 2 has been press-formed into the planar shape of the elastic piece, and has been processed with a pre-break line 21 at the cut-off.

As shown in fig. 3 to 9, the molding apparatus includes a mold base 3, a module assembly is installed on the mold base 3 at a position near the middle, and a plurality of molding assemblies are installed around the module assembly, and the molding assemblies press the preformed flat wire 2 onto the molding wall of the module assembly according to a set time sequence, thereby bending and molding the cage spring 1.

The constituent structure of the module assembly is described below.

Referring to fig. 6 to 9, the module assembly includes a main module 41 and an auxiliary module 42, the main module 41 is fixed on the die holder 3, a sliding hole adapted to the auxiliary module 42 is provided on the die holder 3, the auxiliary module 42 is driven by a telescopic driving device on the back of the die holder 3, and performs telescopic action in the sliding hole along the front-back direction, i.e. when the module is required to work, the telescopic driving device drives the module to extend out of the die holder 3, and when other forming components are required to be avoided, the telescopic driving device drives the module to retract back into the die holder 3.

Specifically, referring to fig. 7, the main module 41 is provided with a first forming wall 411 for forming the left elbow 15 of the cage spring, a second forming wall 412 for forming the back 12 of the cage spring 1, and a third forming wall 413 for forming the right elbow 14 of the cage spring 1.

Referring to fig. 7 and 8, the auxiliary module 42 is located at the lower left of the main module 41, an auxiliary forming wall 421 for forming the tail flange 13 of the cage spring is provided at the upper left corner of the auxiliary module 42, a vertex angle 422 opposite to the auxiliary forming wall 421 is provided at the upper right corner, and the distance between the vertex angle 422 and the main module 41 is smaller than the thickness of the flat wire.

The constitution of the molding assembly is described below.

Each forming assembly comprises a forming driving device and a forming cutter, and the forming driving device drives the corresponding forming cutter to squeeze the flat wire rods towards the direction of the module assembly. The forming driving device adopts the existing linear driving device, such as a linear motor, a hydraulic cylinder, an air cylinder and the like.

Referring to fig. 6 and 7, the molding assembly includes a first molding assembly located at the upper left of the auxiliary module 42, and the first molding assembly includes a first molding blade 51 having a first bending blade 511 and a second bending blade 512. The process of moving the forming tool one 51 toward the auxiliary module 42 includes a first stroke and a second stroke.

In the first stroke, the bending edge I511 of the first forming cutter 51 cooperates with the auxiliary forming wall 421 of the auxiliary module 42 to form the tail flange 13, and after the first stroke is finished, the auxiliary module 42 is retracted into the die holder 3 to avoid the first forming cutter 51 of the second stroke.

In the second stroke, the bending edge two 512 of the first forming blade 51 cooperates with the forming wall one 411 of the main module 41 to form the left elbow 15.

Referring to fig. 3 and 4, the forming assembly further includes a forming assembly two and a forming assembly three disposed opposite to the right side of the main module 41, the forming assembly two includes a forming blade two 52 having a bending blade three 521 and a bending blade four 522, and the forming assembly three includes a forming blade three 53 having a bending blade five 531 and a cutting blade 532. The second forming assembly and the third forming assembly can be matched with each other to cut off continuous flat wires and form the head folded edge 11 of the cage type elastic sheet 1, after the third forming cutter 53 is reset, the second forming cutter 52 can continue to move downwards, and the fourth bending edge 522 of the second forming cutter is matched with the third forming wall 413 of the main module to preform the upper half part of the right elbow 14 of the cage type elastic sheet 1.

Specifically, the process of moving the second forming blade 52 and the third forming blade 53 toward each other is a third process in which the flat wire is cut by the cutting blade 532 (the flat wire is provided with the pre-cut wire 21 at the cut portion), and the head flange 11 of the cage type spring 1 is formed by the bending blade five 531 and the bending blade three 521 in cooperation. And then the third forming cutter 53 is retracted and reset to avoid other forming cutters.

The continuing down stroke of the second forming assembly is a fourth stroke in which the fourth bending edge 522 of the second forming blade 52 cooperates with the third forming wall 413 of the main module 41 to preform the upper half of the right elbow 14 defining the bent portion as the elbow intermediate 17, as shown in fig. 6.

Referring again to fig. 6, the forming assembly further includes a fourth forming assembly located at the lower right of the main module 41, the fourth forming assembly including a fourth forming blade 54 having a sixth bending edge 541, the sixth bending edge 541 being configured to cooperate with the third forming wall 413 of the main module 41 to compress the elbow intermediate 17 to form the right elbow 14.

Referring to fig. 5 and 6, the molding assembly further includes a molding assembly five located directly above the main module 41, the molding assembly five includes a molding knife five 55 having a bending edge seven 551, and the bending edge seven 551 can cooperate with the molding wall two 412 of the main module 41 to mold the back 12 of the cage spring 1.

In this embodiment, since the molded cage spring 1 is wrapped on the main module 41, the wrapping between the two is tight, and in order to stably eject the product (the product herein refers to the cage spring 1), the main module 41 is mounted on the die holder 3 in a telescopic manner like the auxiliary module 42 in a conventional manner, so that the product can be smoothly separated from the main module 41 to finish unloading when the main module 41 is retracted into the die holder 3. However, since the main module 41 and the auxiliary module 42 are closely arranged, there is no extra space on the back of the die holder 3 for installing the telescopic driving device of the main module 41, so in this embodiment, the main module 41 is fixedly installed, the specific process that the auxiliary module 42 needs to be extended out of the die holder 3 again when the next product is processed after being reset is utilized, and the distance between the vertex angle 422 of the auxiliary module 42 and the main module 41 is set to be smaller than the thickness of the flat wire, so when one product is processed, the auxiliary module 42 is extended forward, the cage spring 1 wrapped on the main module 41 is pushed forward from the main module 41 by the vertex angle 422, and at this time, the auxiliary module 42 is ready to provide a forming cooperation work for the next product.

The top posts 6 on the die holder 3 and the top corners 422 of the auxiliary modules 42 are respectively positioned at the left lower side and the right upper side of the main module 41. Because the distance between the top post 6 and the auxiliary module 42 is larger, enough space is available to conveniently install another telescopic driving device on the back of the die holder 3 to drive the top post 6 to move. During discharging, the top corners 422 of the top column 6 and the auxiliary module 42 extend out of the die holder 3 at the same time, the cage type spring sheet 1 sleeved on the main module 41 is ejected, the top column 6 and the auxiliary module 42 are respectively arranged at the left lower part and the right upper part of the main module 41, and the cage type spring sheet 1 can be pushed to move along the main module 41 more stably, so that deformation of the cage type spring sheet during discharging is avoided.

Each driving device in the embodiment is in communication connection with a control system, and the control system sends driving instructions to the corresponding driving devices according to a set program to complete driving actions.

In the embodiment, the two sides of each forming cutter are positioned by the positioning blocks, so that the forming cutters can accurately complete bending actions.

The working process of the embodiment is as follows:

The main module 41 and the auxiliary module 42 extend out of the die holder 3, and one end of the preformed flat wire 2 is fed above the main module 41 and supported by the main module 41;

In the third stroke, the forming cutter III 53 is driven to ascend, the forming cutter II 52 is driven to descend, the forming cutter II and the forming cutter II are matched with each other to squeeze flat wires, the cutting edge 532 on the right side of the forming cutter III 53 is used for cutting off the flat wires, and meanwhile, the head folded edge 11 of the cage-shaped elastic sheet 1 is formed;

in the fourth stroke, the second forming knife 52 continues to move downward, the fourth bending edge 522 of the second forming knife cooperates with the third forming wall 413 of the main module 41 to preform the upper part of the right elbow 14, so as to form the elbow intermediate 17, and the fifth forming knife 55 is driven to move downward, and the seventh bending edge 551 cooperates with the second forming wall 412 of the main module 41 to bend and form the back 12 of the cage elastic sheet 1;

The first forming assembly is matched with the auxiliary module 42 to form the tail folded edge 13 and the left elbow 15 of the cage-type elastic sheet 1, and the fourth forming assembly is matched with the main module 41 to form the right elbow 14;

The specific process of the first molding assembly is as follows:

The first forming knife 51 is driven to move towards the auxiliary module 42, the first bending edge 511 of the first forming knife 51 is matched with the auxiliary module 42 to form the tail flange 13 in a first stroke, and the auxiliary module 42 is retracted into the die holder 3 immediately after the first stroke is finished;

the first forming blade 51 continues to move, and the second bending blade 512 cooperates with the main module 41 to form the left elbow 15 in the second stroke of the first forming blade 51.

The specific process of the molding assembly IV is as follows:

the bending edge six 541 of the fourth forming blade 54 cooperates with the forming wall three 413 of the main module 41 to press the elbow intermediate 17 upward and leftward, thereby forming the right elbow 14.

In the forming process of the left elbow 15 and the right elbow 14, the end part of the right elbow 14 is automatically inserted into the window 16 of the left elbow 15 to obtain the cage-shaped spring sheet 1, and the forming knife I51, the forming knife II 52, the forming knife IV 54 and the forming knife V55 are retracted and reset;

the auxiliary module 42 and the jacking column 6 push the lower left corner and the upper right corner of the cage-shaped spring plate 1 forwards at the same time to jack the cage-shaped spring plate 1 away from the main module 41, and the auxiliary module 42 is kept, and the jacking column 6 is retracted and reset;

repeating the above actions to process the next product.

Example 2

Because the cage spring 1 has a large width, a module assembly of a sufficient length is required to form the cage spring 1, i.e., as shown in fig. 9, the front portion of the module assembly is suspended, and when it receives a large impact force from the forming knife, the front portion of the module assembly is easy to shake or deform. Based on this, the present embodiment provides the supporting block 7 for supporting the main module 41 and the auxiliary module 42 on the basis of embodiment 1, so as to avoid deformation of the module assembly when being impacted.

Referring to fig. 10 to 12, the die holder 3 is provided with a positioning hole 31, the support block 7 is slidably mounted in the positioning hole 31, a ball spring pin 32 is mounted in the positioning hole 31, a pushing positioning groove 71 and a pulling positioning groove 72 adapted to the ball spring pin 32 are correspondingly arranged on the support block 7, and balls of the ball spring pin 32 can be respectively inserted into the pushing positioning groove 71 and the pulling positioning groove 72, so that the support block 7 is positioned in a pushing state and a pulling state.

As shown in fig. 12, the support block 7 is provided with a first support wall 73 for supporting the front suspended portion of the main module 41 and a second support wall 74 for supporting the auxiliary module 42, the first support wall 73 being shaped to follow the bottom of the main module 41 and to be in close contact with the main module 41, and the second support wall 74 being in close contact with the right side wall of the auxiliary module 42. The back 12 of the support block 7 is provided with a relief cavity 75 for the relief of the tail folds 13 and the head folds 11, so that the two folds can be bent in the relief cavity 75.

The support block 7 is driven by the auxiliary module 42, specifically, as shown in fig. 10 and 11, the support block 7 is provided with a force receiving portion 76 extending to the front of the auxiliary module 42, and the force receiving portion 76 is embedded with a ferromagnetic material. The electromagnet 423 is embedded in the front side of the auxiliary module 42, and the current direction of the electromagnet 423 can be alternately changed by the control circuit, so that the magnetic poles of the electromagnet 423 are changed, and the stress part 76 of the supporting block 7 is alternately pushed and pulled.

Other structures of this embodiment are the same as those of embodiment 1.

The working process of the embodiment is as follows:

Before the bending forming work starts, the auxiliary module 42 extends out of the die holder 3, the electromagnet 423 of the auxiliary module 42 is electrified and then is tensioned and clung to the stress part 76, so that the supporting block 7 simultaneously supports the main module 41 and the auxiliary module 42, at the moment, the supporting block 7 in the pulled-in state is positioned in the pulling and moving positioning groove 72 by the balls of the ball spring pin 32, then the electromagnet 423 is powered off, and after the tail folding 13 is completed, the auxiliary module 42 is retracted into the die holder 3. The support blocks 7 continue to provide support to the primary module 41 as the forming assemblies, such as forming knife five 55 and forming knife two 52, apply downward pressure to the primary module 41.

When the cage spring 1 needs to be lifted off the main module 41, although the auxiliary module 42 is still in a position retracted in the die holder 3 and a distance is kept between the auxiliary module 42 and the force receiving portion 76 of the supporting block 7, after the electromagnet 423 is electrified to change the current direction, the force receiving portion 76 can still be pushed to overcome the resistance of the ball spring pin 32 and move forward, and as the auxiliary module 42 moves forward, the supporting block 7 is pushed to a position away from the main module 41 and is positioned in a pushing-out state by the pushing-out positioning groove 71 and the ball spring pin 32, and at the moment, the cage spring 1 is just pushed away from the main module 41 by the auxiliary module 42 to finish automatic discharging, so that the supporting block 7 does not obstruct product discharging.

The supporting blocks 7 of the embodiment can simultaneously support the main module 41 and the auxiliary module 42, so as to avoid deformation of the module assembly and improve the stability of bending action and consistency of product quality. Compared with a common forming cutter which moves the supporting block in a plane parallel to the die holder 3, the supporting block 7 occupies smaller space and has a more compact structure, the stroke of the forward and backward movement of the supporting block 7 is smaller, the conversion action of the non-working state of the supporting block and the action of pushing the product by the auxiliary module 42 are carried out simultaneously, the processing time of the product is more compact, the processing efficiency is improved, the driving mechanism of the supporting block 7 is integrated on the auxiliary module 42, no additional linear driving devices such as a motor and an air cylinder are needed, and no positioning block is needed to position the movement of the supporting block 7 like the forming cutter, so that the equipment structure is further simplified.

The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The cage type elastic sheet forming equipment is characterized by comprising a die holder, a module assembly arranged on the die holder and a plurality of forming assemblies distributed around the module assembly;

The auxiliary module is positioned below the side of the main module, the auxiliary module is provided with an auxiliary forming wall for forming the tail folded edge of the cage-type elastic sheet and a vertex angle opposite to the auxiliary forming wall, and the distance between the vertex angle and the main module is smaller than the thickness of the flat wire; when one product is processed, the auxiliary module extends forwards, the cage-shaped elastic sheet wrapped on the main module is propped down forwards from the main module by the vertex angle, and the auxiliary module is ready for providing forming cooperation for the next product;

the molding assembly comprises a molding assembly I with a bending blade I and a bending blade II;

The die holder is also provided with a supporting block in a telescopic manner relative to the die holder, and the supporting block is provided with a first supporting wall for supporting the main module and a second supporting wall for supporting the auxiliary module;

The supporting block is pushed forward or pulled backward by the auxiliary module;

When the cage spring plate is required to be jacked off the main module, the electromagnet of the auxiliary module pushes the supporting block forwards, so that the supporting block is far away from the main module;

the die holder is provided with a ball spring pin, the supporting block is correspondingly provided with a pushing positioning groove and a pulling positioning groove, when the electromagnet pushes the supporting block in place, a ball of the ball spring pin is inserted into the pushing positioning groove, and when the electromagnet pulls the supporting block in place, the ball is inserted into the pulling positioning groove.

2. The device for forming cage-type elastic pieces according to claim 1, wherein the die holder is provided with a jack post in a telescopic manner, the top angles of the jack post and the auxiliary module are respectively positioned at the left lower part and the right upper part of the main module, and the jack post and the auxiliary module can extend out of the die holder at the same time to eject the cage-type elastic pieces sleeved on the main module.

3. Cage-type dome forming apparatus as claimed in any one of claims 1 to 2, characterized in that,

The forming assembly further comprises a forming assembly II with a bending blade III and a bending blade IV, and a forming assembly III with a bending blade V and a cutting blade, wherein the forming assembly II and the forming assembly III are oppositely arranged;

4. Cage-type dome forming apparatus as claimed in any one of claims 1 to 2, characterized in that,

The forming assembly further comprises a forming assembly IV provided with a bending blade six, and the bending blade six can be matched with a forming wall III of the main module to form a right elbow;

5. A method for forming a cage spring by the forming device as claimed in claim 4, which comprises the following steps:

The fourth forming assembly is matched with the main module to form a right elbow of the cage-shaped elastic sheet, and the head folded edge is inserted into a window of the tail folded edge to obtain the cage-shaped elastic sheet;

6. The method of forming a cage spring of claim 5 wherein:

The die holder is provided with a first supporting wall for supporting the main module and a second supporting wall for supporting the auxiliary module, and the back of the supporting block is provided with an avoidance cavity for avoiding the tail flanging;