Cage spring forming apparatus and forming method thereof

Abstract

The present application belongs to the field of bullet processing, and relates to a cage bullet forming equipment, which comprises a die holder, a die assembly installed on the die holder, and a plurality of forming assemblies distributed around the die assembly; the die assembly comprises a main die and an auxiliary die which can be driven to retract into the die holder, and the plurality of forming assemblies are respectively matched with the main die and the auxiliary die to bend a preformed flat wire into a cage bullet; the main die is provided with a forming wall one for forming a left elbow of the cage bullet, a forming wall two for forming a back of the cage bullet, and a forming wall three for forming a right elbow of the cage bullet; the auxiliary die is located below and on the side of the main die, and is provided with an auxiliary forming wall for forming a tail edge of the cage bullet and a top corner opposite to the auxiliary forming wall; the distance between the top corner and the main die is less than the thickness of the flat wire. The present application has a compact structure, multiple processes are performed synchronously, and the processing efficiency is high.

Description

Technical Field

[0001] This invention belongs to the field of spring processing technology, and specifically relates to a cage-type spring forming equipment and its forming method. Background Technology

[0002] Cage springs are a common accessory for completing electrical connections. They are connected to electrical components to lock, fix, and conduct electrical circuits such as cables and conductive plates.

[0003] Figure 1 An example of a conventional cage-type spring includes a head flange 11, a back flange 12, and a tail flange 13. The connection between the head flange 11 and the back flange 12 is provided with an arc-shaped right bend 14, and the connection between the tail flange 13 and the back flange 12 is provided with an arc-shaped left bend 15. The tail flange 13 is provided with a rectangular window 16. The end of the head flange 11 is narrowed and inserted into the window 16. There is a certain gap between the end and the two sides of the window 16, so there is no friction between the head flange and the two sides of the window during the movement.

[0004] Existing cage-type spring forming machines, such as the utility model patent disclosed in CN208099049U, disclose that: a fixed end plate is provided on the base of the spring forming machine, and fixed guide frames are arranged at intervals along the circumference on the front side of the fixed end plate. Each fixed guide frame is provided with a movable frame, and the two are slidably engaged. An operating head is provided at the inner end of each movable frame, and the outer end of each movable frame is connected to a cam plate. Each cam plate is connected to a turntable, and each turntable is connected to a rotating shaft that passes through the fixed end plate. A mandrel is installed in the middle of the fixed end plate. This utility model is reasonably designed and, by setting multiple operating heads on the spring forming machine, forms corresponding molds to realize arc pressing, bending, and fastening operations. However, this forming machine is equipped with cutter heads, multiple bending heads, and multiple fastening heads to perform their respective functions. For example, cutter head 17 works with pad block 24 to cut the steel strip, bending head one 18, bending head two 19, bending head three 20, and bending head four 21 work with mandrel 11 to perform arc pressing and bending operations, and fastening head one 22 and fastening head two 23 work together to complete the fastening operation. The process is cumbersome, the processing cycle is slow, the efficiency is low, and the equipment structure is complex and bulky, resulting in high manufacturing costs, which is not conducive to its widespread use. Summary of the Invention

[0005] In contrast to existing technologies, this invention provides a cage-type spring forming device with high processing efficiency and a compact structure.

[0006] A cage-type spring forming device includes a mold base, a modular assembly mounted on the mold base, and a plurality of forming components distributed around the modular assembly;

[0007] The modular assembly includes a main module and an auxiliary module that can be driven to retract into the mold base. Multiple forming components respectively cooperate with the main module and the auxiliary module to bend the pre-formed flat wire into a cage-like spring sheet; wherein:

[0008] The main module is provided with 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.

[0009] The auxiliary module is located to the side and below the main module. The auxiliary module is provided with an auxiliary forming wall for forming the tail fold of the cage-like spring sheet and a top corner opposite to the auxiliary forming wall. The distance between the top corner and the main module is less than the thickness of the flat wire.

[0010] Preferably, a top post is retractably mounted on the mold base, and the top corners of the top post and the auxiliary module are located at the lower left and upper right of the main module, respectively, and can extend out of the mold base at the same time to push out the cage-like spring sheet fitted on the main module.

[0011] Preferably, the forming component includes a forming component one having a bending blade one and a bending blade two;

[0012] During the first stroke of the forming component, the bending blade cooperates with the auxiliary module to form the tail fold, and after the first stroke is completed, the auxiliary module retracts into the mold base;

[0013] In the second stroke of the forming component one, the bending blade two cooperates with the main module to form a left bend.

[0014] Preferably, the forming component further includes a forming component two having a bending blade three and a bending blade four, and a forming component three having a bending blade five and a cutting blade, wherein the forming component two and the forming component three are arranged opposite to each other;

[0015] During the third stroke of the relative movement of the second and third forming components, the cutting blade cuts the flat wire, and the fifth and third bending blades cooperate to form the head fold of the cage-like spring sheet.

[0016] During the fourth stroke of the forming component two as it continues to descend, the bending blade four cooperates with the forming wall three of the main module to pre-form the right bend.

[0017] Preferably, the forming component further includes a forming component four with a bending blade six, the bending blade six being able to cooperate with the forming wall three of the main module to form a right bend;

[0018] The forming component also includes a forming component five for a bending blade seven, which can cooperate with the forming wall two of the main module to form the back of the cage-like spring sheet.

[0019] Furthermore, a support block is also retractably mounted on the mold base relative to the mold base. The support block is provided with a support wall one for supporting the main module and a support wall two for supporting the auxiliary module.

[0020] The back of the support block is provided with a clearance cavity for avoiding the tail fold;

[0021] The support block is pushed forward or pulled backward by the auxiliary module.

[0022] Preferably, the support block is further provided with a force-receiving part extending to the front of the auxiliary module, the force-receiving part being made of ferromagnetic material; an electromagnet is installed on the front side of the auxiliary module, the magnetic poles of the electromagnet being changeable, thereby alternately pushing and pulling the force-receiving part;

[0023] When the support block needs to support the main module and the auxiliary module, the electromagnet of the auxiliary module is pulled tight and pressed against the force-bearing part, so that the first support wall of the support block supports the bottom of the main module and the second support wall supports the side of the auxiliary module.

[0024] When it is necessary to push the cage-like spring sheet off the main module, the electromagnet of the auxiliary module pushes the support block forward, moving the support block away from the main module.

[0025] Preferably, a ball spring pin is installed on the mold base, and a push positioning groove and a pull positioning groove are correspondingly provided on the support block. When the electromagnet pushes the support block into place, the ball of the ball spring pin is inserted into the push positioning groove; when the electromagnet pulls the support block into place, the ball is inserted into the pull positioning groove.

[0026] Another object of the present invention is to disclose a method for molding a cage-like spring, comprising the following steps:

[0027] Both the main module and the auxiliary module extend outside the mold base, and the pre-formed flat wire is fed into the top of the main module;

[0028] The forming component, in conjunction with the main module, bends and forms the back of the cage-like spring sheet; the forming component one, in conjunction with the auxiliary module, forms the tail fold and left bend of the cage-like spring sheet, wherein:

[0029] During the first stroke of the forming component, the bending blade cooperates with the auxiliary module to form the tail fold, and after the first stroke is completed, the auxiliary module retracts into the mold base;

[0030] In the second stroke of the forming component one, the bending blade two cooperates with the main module to form a left bend;

[0031] Other molding components work together with the main module to form the right bend of the cage-like spring sheet, and insert the head folded edge into the window of the tail folded edge to obtain the cage-like spring sheet.

[0032] The auxiliary module and the top column simultaneously push the lower left and upper right corners of the cage-like spring sheet forward, pushing the cage-like spring sheet away from the main module.

[0033] Preferably, a support block is telescopically mounted on the mold base relative to the mold base. The support block is provided with a support wall one for supporting the main module and a support wall two for supporting the auxiliary module. The back of the support block is provided with a clearance cavity for avoiding the tail fold.

[0034] The support block is also provided with a force-receiving part extending to the front of the auxiliary module. The force-receiving part is made of ferromagnetic material. An electromagnet is installed on the front side of the auxiliary module. The magnetic poles of the electromagnet can be changed, thereby alternately pushing and pulling the force-receiving part.

[0035] The method for forming the cage-like spring sheet further includes: the support block being pushed forward or pulled backward by the auxiliary module, wherein:

[0036] The electromagnet of the auxiliary module extending out of the mold base is pulled tight and pressed against the force-bearing part, so that the first support wall of the support block supports the bottom of the main module and the second support wall supports the side of the auxiliary module; then the electromagnet is de-energized, the auxiliary module retracts into the mold base, and the support block continues to support the main module.

[0037] After the cage-shaped spring is formed, the current of the electromagnet is reversed, causing the magnetic poles to change. The auxiliary module and the top column are simultaneously pushed forward by the driven mechanism, and the support block is pushed away from the bottom of the main module. The cage-shaped spring falls off the main module.

[0038] The beneficial effects of this invention are as follows:

[0039] This invention employs two modules: a main module and an auxiliary module, for forming cage-like spring sheets. The auxiliary module is telescopically mounted on a mold base. It can extend from the mold base to cooperate with the forming blade to bend the tail edge of the cage-like spring sheet, or it can retract into the mold base to avoid interfering with the forming blade. Furthermore, when it extends again, it automatically pushes the cage-like spring sheet off the main module. Therefore, multiple processes can be performed simultaneously, improving processing efficiency. This structure also solves the problem of difficulty in simultaneously installing two drive devices to drive the main module and auxiliary module telescopically in a confined space.

[0040] This invention features two modules, a main module and an auxiliary module, for forming cage-like spring sheets. These two modules work in conjunction with forming blade one, utilizing the bending blade one and bending blade two of forming blade one to form the tail fold and left bend respectively. In other words, the work of two forming blades in conventional equipment is completed in two consecutive strokes of one forming blade, significantly shortening the processing cycle.

[0041] In this invention, forming components two and three are arranged facing each other. Forming component two is equipped with bending blade three and bending blade four, while forming component three is equipped with bending blade five and cutting blade. Therefore, in the third stroke when the two move towards each other, the cutting blade cuts the flat wire, while bending blade five and bending blade three cooperate to form the head fold of the cage-like spring. In the fourth stroke when forming component two continues to move downward, bending blade four cooperates with the forming wall three of the main module to pre-form the right bend. Therefore, only two forming blades are needed to achieve the functions of cutting, forming head fold, and pre-forming the right bend in one reciprocating motion. Compared with conventional equipment that needs to complete the above three actions separately, this equipment further shortens the processing cycle and simplifies the equipment structure.

[0042] This invention features a support block installed below the main module, which can support both the main and auxiliary modules simultaneously, or support the main module alone, preventing the module components from being deformed by the forming blade. The support block is pushed forward or pulled backward by an electromagnet on the auxiliary module, switching between non-working and working states. The support block has a small stroke, and the transition to the non-working state occurs simultaneously with the auxiliary module's pushing of the cage-like spring, further shortening the product processing cycle and improving processing efficiency. Attached Figure Description

[0043] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0044] Figure 1 This is a structural diagram of the cage-type spring sheet of the present invention;

[0045] Figure 2 This is a top view of the preformed flat wire of the present invention;

[0046] Figure 3 This is a schematic diagram of the main view structure of the formed head during the folding process in Embodiment 1 of the present invention;

[0047] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle;

[0048] Figure 5 This is a schematic diagram of the main structure when the tail edge of the present invention is folded.

[0049] Figure 6yes Figure 5 Enlarged schematic diagram of part B in the middle;

[0050] Figure 7 This is a schematic diagram of the main module and auxiliary module of the present invention on the mold base;

[0051] Figure 8 This is a schematic diagram of the main structure where the auxiliary module and the top column simultaneously push the cage-type spring sheet.

[0052] Figure 9 yes Figure 8 A three-dimensional structural diagram from another perspective;

[0053] Figure 10 This is a front view diagram of the support block supporting the main module and auxiliary module in Embodiment 2;

[0054] Figure 11 Figure 10 A cross-sectional view of the support block supporting the main module and auxiliary module from the CC direction;

[0055] Figure 12 yes Figure 11 Cross-sectional view along the DD direction.

[0056] 1. Cage-type shrapnel; 11. Head folded edge; 12. Back; 13. Tail folded edge; 14. Right bend; 15. Left bend; 16. Window; 17. Middle part of the bend;

[0057] 2. Pre-formed flat wire; 21. Pre-cut wire;

[0058] 3. Mold base; 31. Positioning hole; 32. Ball spring pin;

[0059] 41. Main module; 411. Forming wall one; 412. Forming wall two; 413. Forming wall three; 42. Auxiliary module; 421. Auxiliary forming wall; 422. Top corner; 423. Electromagnet;

[0060] 51. Forming blade one; 511. Bending blade one; 512. Bending blade two;

[0061] 52. Forming blade two; 521. Bending blade three; 522. Bending blade four;

[0062] 53. Forming blade three; 531. Bending blade five; 532. Cutting blade;

[0063] 54. Forming blade four; 541. Bending blade six;

[0064] 55. Forming blade five; 551. Bending blade seven;

[0065] 6. Top column;

[0066] 7. Support block; 71. Push positioning groove; 72. Pull positioning groove; 73. Support wall one; 74. Support wall two; 75. Clearance cavity; 76. Force-bearing part. Detailed Implementation

[0067] Example 1

[0068] The cage-type spring forming equipment in this embodiment is used to form such as... Figure 1 The cage-type shrapnel 1 is shown. (As shown) Figure 2 The preformed flat wire 2 shown has been stamped into the planar shape of a spring sheet, and a pre-cut wire 21 is processed at the cut point.

[0069] like Figures 3 to 9 As shown, the molding equipment includes a mold base 3, a module assembly is installed on the mold base 3 near the center, and multiple molding components are installed around the module assembly. The molding components press the pre-formed flat wire 2 onto the molding wall of the module assembly in a set sequence, thereby bending and forming the cage-type spring sheet 1.

[0070] The following describes the composition structure of the module components.

[0071] Please refer to Figures 6 to 9 The module component includes a main module 41 and an auxiliary module 42. The main module 41 is fixed on the mold base 3. The mold base 3 is provided with a sliding hole that is adapted to the auxiliary module 42. The auxiliary module 42 is driven by a telescopic drive device on the back of the mold base 3 and moves in the front-back direction within the sliding hole. That is, when the module needs to work, the telescopic drive device drives the module to extend forward out of the mold base 3. When it needs to avoid other molding parts, the telescopic drive device drives the module to retract backward into the mold base 3.

[0072] For details, please refer to Figure 7 The main module 41 is provided with a forming wall 411 for forming the left bend 15 of the cage spring sheet, a forming wall 412 for forming the back 12 of the cage spring sheet 1, and a forming wall 413 for forming the right bend 14 of the cage spring sheet 1.

[0073] Please refer to Figure 7 and Figure 8 The auxiliary module 42 is located to the lower left of the main module 41. The upper left corner of the auxiliary module 42 is provided with an auxiliary forming wall 421 for forming the tail fold 13 of the cage-type spring sheet. The upper right corner is provided with a apex 422 opposite to the auxiliary forming wall 421. The distance between the apex 422 and the main module 41 is less than the thickness of the flat wire.

[0074] The following describes the composition and structure of the molding component.

[0075] Each forming component includes a forming drive and a forming blade. The forming drive drives the corresponding forming blade to extrude the flat wire toward the module component. The forming drive uses existing linear drive devices, such as linear motors, hydraulic cylinders, and pneumatic cylinders.

[0076] Please refer to the following: Figure 6 , Figure 7 The forming assembly includes a forming assembly one located at the upper left of the auxiliary module 42. The forming assembly one includes a forming blade 51 having a bending blade 511 and a bending blade 512. The process of the forming blade 51 moving towards the auxiliary module 42 includes a first stroke and a second stroke.

[0077] In the first stroke, the bending blade 511 of the forming blade 51 cooperates with the auxiliary forming wall 421 of the auxiliary module 42 to form the tail fold 13. After the first stroke, the auxiliary module 42 retracts into the mold base 3 to avoid the forming blade 51 in the second stroke.

[0078] In the second stroke, the bending blade 512 of the forming blade 51 cooperates with the forming wall 411 of the main module 41 to form the left bend 15.

[0079] Please refer to Figure 3 and Figure 4 The forming components also include forming components two and three located to the right of the main module 41 and arranged opposite each other. Forming component two includes forming blade two 52 with bending blade three 521 and bending blade four 522, and forming component three includes forming blade three 53 with bending blade five 531 and cutting blade 532. Forming components two and three can cooperate to cut continuous flat wire and form the head fold 11 of the cage spring 1. After forming blade three 53 is reset, forming blade two 52 can continue to move downward, and its bending blade four 522 cooperates with the forming wall three 413 of the main module to pre-form the upper half of the right bend 14 of the cage spring 1.

[0080] Specifically, the process of forming blade 2 52 and forming blade 3 53 moving towards each other is the third stroke. In the third stroke, the cutting blade 532 cuts the flat wire (the flat wire has a pre-cut wire 21 pre-processed at the cut point), and the bending blade 531 and bending blade 3 521 cooperate to form the head fold 11 of the cage-type spring 1. Then the forming blade 3 53 retracts and resets, avoiding other forming blades.

[0081] The process of the second forming component continuing downward is the fourth stroke. In the fourth stroke, the bending blade 522 of the second forming blade 52 cooperates with the forming wall 413 of the main module 41 to pre-form the upper part of the right bend 14. This bent part is defined as the bend intermediate body 17. Figure 6 As shown.

[0082] See again Figure 6The molding assembly also includes a molding assembly four located at the lower right of the main module 41. The molding assembly four includes a molding blade four 54 with a bending blade six 541. The bending blade six 541 can cooperate with the molding wall three 413 of the main module 41 to extrude the elbow intermediate body 17 to form a right elbow 14.

[0083] Please refer to Figure 5 and Figure 6 The molding assembly also includes a molding assembly five located directly above the main module 41. The molding assembly five includes a molding blade five 55 with a bending blade seven 551. The bending blade seven 551 can cooperate with the molding wall two 412 of the main module 41 to mold the back 12 of the cage-type spring sheet 1.

[0084] In this embodiment, since the formed cage-type spring sheet 1 is wrapped around the main module 41, and the two are tightly wrapped, in order to smoothly eject the product (the product in this article refers to the cage-type spring sheet 1), the conventional method is to telescopically install the main module 41 on the mold base 3 like the auxiliary module 42. In this way, when the main module 41 is retracted into the mold base 3, the product can be smoothly detached from the main module 41 to complete the unloading. However, since the main module 41 and the auxiliary module 42 are close together, there is no extra space on the back of the mold base 3 to install the telescopic drive device of the main module 41. Therefore, in this embodiment, the main module 41 is set to be fixed. When the auxiliary module 42 is processed for the next product, it needs to extend out of the mold base 3 again. The distance between the top corner 422 of the auxiliary module 42 and the main module 41 is set to be less than the thickness of the flat wire. Therefore, when a product is processed, the auxiliary module 42 extends forward, and its top corner 422 pushes the cage-like spring 1 wrapped on the main module 41 forward from the main module 41. At this time, the auxiliary module 42 is ready to provide molding fit for the next product.

[0085] The top post 6 on the mold base 3 and the top corner 422 of the auxiliary module 42 are located at the lower left and upper right of the main module 41, respectively. Because the distance between the top post 6 and the auxiliary module 42 is relatively large, there is sufficient space to easily install another telescopic drive device on the back of the mold base 3 to drive the movement of the top post 6. During unloading, the top post 6 and the top corner 422 of the auxiliary module 42 extend out of the mold base 3 simultaneously, pushing out the cage-like spring 1 fitted on the main module 41. The top post 6 and the auxiliary module 42 are positioned at the lower left and upper right of the main module 41, allowing for a smoother movement of the cage-like spring 1 along the main module 41 and preventing deformation of the cage-like spring during unloading.

[0086] In this embodiment, each driving device is communicatively connected to the control system. The control system sends driving commands to the corresponding driving devices according to the set program to complete the driving action.

[0087] In this embodiment, each forming blade is positioned on both sides by positioning blocks, enabling them to accurately complete the bending action.

[0088] The working process of this embodiment is as follows:

[0089] Both the main module 41 and the auxiliary module 42 extend out of the mold base 3. One end of the pre-formed flat wire 2 is fed into the top of the main module 41 and supported by the main module 41.

[0090] In the third stroke, forming blade 3 53 is driven upward and forming blade 2 52 is driven downward. The two work together to compress the flat wire. The cutting edge 532 on the right side of forming blade 3 53 cuts the flat wire, and at the same time, the head edge 11 of the forming cage spring 1 is folded. Then forming blade 3 53 returns to its original position.

[0091] In the fourth stroke, the forming blade 2 52 continues to descend, and its bending blade 4 522 cooperates with the forming wall 3 413 of the main module 41 to pre-form the upper part of the right bend 14, forming the bend intermediate body 17. At the same time, the forming blade 55 is driven to descend, and its bending blade 7 551 cooperates with the forming wall 2 412 of the main module 41 to bend and form the back 12 of the cage-type spring sheet 1.

[0092] The molding component 1 and the auxiliary module 42 cooperate to form the tail fold 13 and the left bend 15 of the cage-type spring sheet 1, while the molding component 4 cooperates with the main module 41 to form the right bend 14.

[0093] The specific process for molding component one is as follows:

[0094] The forming blade 51 is driven to move toward the auxiliary module 42. During the first stroke of the forming blade 51, its bending blade 511 cooperates with the auxiliary module 42 to form the tail fold 13. After the first stroke ends, the auxiliary module 42 immediately retracts into the mold base 3.

[0095] The forming blade 51 continues to move. During the second stroke of the forming blade 51, the bending blade 512 cooperates with the main module 41 to form the left bend 15.

[0096] The specific process for molding component four is as follows:

[0097] The bending blade 541 of the forming blade 44 cooperates with the forming wall 413 of the main module 41 to press the intermediate body 17 of the bend to the upper left to form the right bend 14.

[0098] During the formation of the left bend 15 and the right bend 14, the end of the right bend 14 is automatically inserted into the window 16 of the left bend 15 to obtain the cage-type spring 1; the forming blade 1 51, forming blade 2 52, forming blade 4 54, and forming blade 55 retract and reset.

[0099] The auxiliary module 42 and the top post 6 simultaneously push the lower left and upper right corners of the cage-type spring 1 forward, pushing the cage-type spring 1 away from the main module 41; the auxiliary module 42 remains in place, and the top post 6 retracts to reset.

[0100] Repeat the above steps to process the next product.

[0101] Example 2

[0102] Because the cage-type spring 1 is relatively wide, a sufficiently long modular component is required to form the cage-type spring 1, i.e., as shown below. Figure 9 As shown, the front of the module component is suspended, and when it is subjected to a large impact force from the forming blade, the front of the module component is prone to shaking or deformation. Based on this, this embodiment provides a support block 7 on the basis of embodiment 1 to support the main module 41 and the auxiliary module 42, so as to prevent the module component from deforming when it is subjected to impact.

[0103] Please refer to Figures 10 to 12 The support block 7 is telescopically mounted on the mold base 3. The specific structure is as follows: the mold base 3 is provided with a positioning hole 31, the support block 7 is slidably installed in the positioning hole 31, the positioning hole 31 is installed with a ball spring pin 32, and the support block 7 is provided with a push positioning groove 71 and a pull positioning groove 72 that are adapted to the ball spring pin 32. The balls of the ball spring pin 32 can be inserted into the push positioning groove 71 and the pull positioning groove 72 respectively, thereby positioning the support block 7 in the pushed-out state and the pulled-in state.

[0104] like Figure 12 As shown, the support block 7 has a first support wall 73 for supporting the suspended front part of the main module 41 and a second support wall 74 for supporting the auxiliary module 42. The shape of the first support wall 73 is similar to the bottom of the main module 41 and is in close contact with the main module 41. The second support wall 74 is in close contact with the right side wall of the auxiliary module 42. The back 12 of the support block 7 has a clearance cavity 75 for avoiding the tail fold 13 and the head fold 11. Therefore, the two folds can be bent within the clearance cavity 75.

[0105] The extension and retraction of support block 7 is driven by auxiliary module 42, specifically, as follows: Figure 10 and Figure 11 As shown, the support block 7 has a force-receiving part 76 extending to the front of the auxiliary module 42, and the force-receiving part 76 is embedded with ferromagnetic material. An electromagnet 423 is embedded in the front side of the auxiliary module 42. The direction of the current in the electromagnet 423 can be alternately changed by the control circuit, thereby changing the magnetic poles of the electromagnet 423, and thus alternately pushing and pulling the force-receiving part 76 of the support block 7.

[0106] The other structures in this embodiment are the same as in Embodiment 1.

[0107] The working process of this embodiment is as follows:

[0108] Before the bending and forming process begins, the auxiliary module 42 extends out of the mold base 3. After the electromagnet 423 of the auxiliary module 42 is energized, it is pulled tight and pressed against the force-bearing part 76, so that the support block 7 simultaneously supports the main module 41 and the auxiliary module 42. At this time, the support block 7, which is in the pulled-in state, is positioned in the pull-out positioning groove 72 by the balls of the ball spring pin 32. Then, the electromagnet 423 is de-energized, and after the tail folding 13 is completed, the auxiliary module 42 retracts into the mold base 3. When the forming components, such as forming blade 55 and forming blade 2 52, apply downward pressure to the main module 41, the support block 7 continues to provide support force to the main module 41.

[0109] When the cage spring 1 needs to be pushed off the main module 41, although the auxiliary module 42 is still retracted inside the mold base 3 and there is a distance between it and the force-bearing part 76 of the support block 7, the electromagnet 423 can still apply a pushing force to the force-bearing part 76 after changing the current direction and energizing it, so that it can overcome the resistance of the ball spring pin 32 and move forward. As the auxiliary module 42 moves further forward, the support block 7 is pushed to a position away from the main module 41 and is positioned in the ejection state by the push positioning groove 71 and the ball spring pin 32. At this time, the cage spring 1 is also pushed away from the main module 41 by the auxiliary module 42, completing the automatic unloading. Therefore, the support block 7 will not hinder the unloading of the product.

[0110] In this embodiment, the support block 7 can simultaneously support the main module 41 and the auxiliary module 42, preventing deformation of the module components and improving the stability of the bending action and the consistency of product quality. The support block 7 moves in the front-back direction to switch between the push-out state and the pull-in state (i.e., non-working state and working state). Compared with a support block that moves in a plane parallel to the mold base 3, similar to a common forming cutter, the support block 7 in this embodiment occupies less space and has a more compact structure. The stroke of the support block 7 is shorter, and the switching action of the support block in the non-working state is carried out simultaneously with the action of the auxiliary module 42 pushing the product, making the product processing cycle more compact and improving processing efficiency. The drive mechanism of the support block 7 is integrated on the auxiliary module 42, eliminating the need for additional linear drive devices such as motors and cylinders, and eliminating the need for positioning blocks to position the movement of the support block 7 like a forming cutter, further simplifying the equipment structure.

[0111] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cage-type spring forming device, characterized in that, It includes a mold base, a modular assembly mounted on the mold base, and a plurality of molding 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. Multiple forming components respectively cooperate with the main module and the auxiliary module to bend the pre-formed flat wire into a cage-like spring sheet; wherein: The main module is provided with 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-like 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. When a product is processed, the auxiliary module extends forward, and its apex pushes the cage-like spring sheet wrapped on the main module forward from the main module. At this time, the auxiliary module is ready to provide forming cooperation for the next product. The forming component includes a forming component one having a bending blade one and a bending blade two; During the first stroke of the forming component, the bending blade cooperates with the auxiliary module to form the tail fold, and after the first stroke is completed, the auxiliary module retracts into the mold base; In the second stroke of the forming component one, the bending blade two cooperates with the main module to form a left bend; The mold base is also equipped with a support block that can be telescopically installed relative to the mold base. The support block is provided with a support wall one for supporting the main module and a support wall two for supporting the auxiliary module. The back of the support block is provided with a clearance cavity for avoiding the tail fold; The support block is pushed forward or pulled backward by the auxiliary module; The support block is also provided with a force-receiving part extending to the front of the auxiliary module. The force-receiving part is made of ferromagnetic material. An electromagnet is installed on the front side of the auxiliary module. The magnetic poles of the electromagnet can be changed, thereby alternately pushing and pulling the force-receiving part. When the support block needs to support the main module and the auxiliary module, the electromagnet of the auxiliary module is pulled tight and pressed against the force-bearing part, so that the first support wall of the support block supports the bottom of the main module and the second support wall supports the side of the auxiliary module. When it is necessary to push the cage-like spring sheet off the main module, the electromagnet of the auxiliary module pushes the support block forward, so that the support block is away from the main module; The mold base is equipped with a ball spring pin, and the support block is correspondingly provided with a push positioning groove and a pull positioning groove. When the electromagnet pushes the support block into place, the ball of the ball spring pin is inserted into the push positioning groove; when the electromagnet pulls the support block into place, the ball is inserted into the pull positioning groove.

2. The cage-type spring forming equipment according to claim 1, characterized in that: The mold base is retractably mounted with a top post. The top corners of the top post and the auxiliary module are located at the lower left and upper right of the main module, respectively. The top post can extend out of the mold base at the same time to push out the cage-like spring sheet fitted on the main module.

3. The cage-type spring forming equipment according to any one of claims 1 to 2, characterized in that, The forming assembly further includes a forming assembly two having a bending blade three and a bending blade four, and a forming assembly three having a bending blade five and a cutting blade, wherein the forming assembly two and the forming assembly three are arranged opposite to each other. During the third stroke of the relative movement of the second and third forming components, the cutting blade cuts the flat wire, and the fifth and third bending blades cooperate to form the head fold of the cage-like spring sheet. During the fourth stroke of the forming component two as it continues to descend, the bending blade four cooperates with the forming wall three of the main module to pre-form the right bend.

4. The cage-type spring forming equipment according to any one of claims 1 to 2, characterized in that, The forming component also includes a forming component four with a bending blade six, which can cooperate with the forming wall three of the main module to form a right bend. The forming component also includes a forming component five for a bending blade seven, which can cooperate with the forming wall two of the main module to form the back of the cage-like spring sheet.

5. A method for forming a cage-type spring sheet using the forming equipment described in claim 4, characterized in that: Includes the following steps: Both the main module and the auxiliary module extend outside the mold base, and the pre-formed flat wire is fed into the top of the main module; The forming component, in conjunction with the main module, bends and forms the back of the cage-like spring sheet; the forming component one, in conjunction with the auxiliary module, forms the tail fold and left bend of the cage-like spring sheet, wherein: During the first stroke of the forming component, the bending blade cooperates with the auxiliary module to form the tail fold, and after the first stroke is completed, the auxiliary module retracts into the mold base; In the second stroke of the forming component one, the bending blade two cooperates with the main module to form a left bend; The molding component four works with the main module to form the right bend of the cage-like spring sheet, and inserts the head folded edge into the window of the tail folded edge to obtain the cage-like spring sheet; all molding components are reset. The auxiliary module and the top column simultaneously push the lower left and upper right corners of the cage-like spring sheet forward, pushing the cage-like spring sheet away from the main module.

6. The method for forming a cage-like spring sheet according to claim 5, characterized in that: The support block is telescopically mounted on the mold base. The support block is provided with a support wall one for supporting the main module and a support wall two for supporting the auxiliary module. The back of the support block is provided with a clearance cavity for avoiding the tail fold. The support block is also provided with a force-receiving part extending to the front of the auxiliary module. The force-receiving part is made of ferromagnetic material. An electromagnet is installed on the front side of the auxiliary module. The magnetic poles of the electromagnet can be changed, thereby alternately pushing and pulling the force-receiving part. The method for forming the cage-like spring sheet further includes: the support block being pushed forward or pulled backward by the auxiliary module, wherein: The electromagnet of the auxiliary module extending out of the mold base is pulled tight and pressed against the force-bearing part, so that the first support wall of the support block supports the bottom of the main module and the second support wall supports the side of the auxiliary module; then the electromagnet is de-energized, the auxiliary module retracts into the mold base, and the support block continues to support the main module. After the cage-shaped spring is formed, the current of the electromagnet is reversed, causing the magnetic poles to change. The auxiliary module and the top column are simultaneously driven by the mechanism to push the cage-shaped spring forward. The support block is pushed away from the bottom of the main module at the same time, and the cage-shaped spring falls off the main module.

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