Forming die and forming method of ABS accumulator bellows

Abstract

The present application discloses a forming die and forming method for an ABS accumulator bellows. When the forming die is used for extrusion forming, the operator inserts a guide into the inner cavity of a tube blank as a raw material to support and position the tube blank. At the same time, the operator operates to fix the beam-shaped component to the deformed portion of the tube blank (i.e., the portion of the tube blank that does not contact the first die and the second die). The operation of the driving mechanism drives the first die and the second die to close the mold for extrusion forming. In this way, during the extrusion forming process, the deformed portion of the tube blank is constrained by the beam-shaped component and can only deform along the active direction of the beam-shaped component, while deformation in other directions is restricted. This effectively reduces the uncertainty of deformation of the tube blank during the extrusion forming process, and ensures the product quality of the finished smart car ABS accumulator bellows.

Description

Technical Field

[0001] The present application relates to the technical field of bellows processing and forming, and in particular to a forming die and a forming method for an ABS accumulator bellows. Background Art

[0002] The ABS system controls the wheel slip rate to maintain the directional stability and steering control ability of the car during driving. It is indispensable in today's vehicles and is also a research hotspot for future new energy vehicles and smart driving vehicles. At present, the springs of most accumulators are made of rubber, which has high elasticity, low cost, light weight, and is widely used. However, it also has the disadvantages of poor high and low temperature performance, easy aging and breakage, and poor explosion resistance. Once the spring is aged and broken, the vehicle will not be able to stop quickly when braking, which is easy to cause accidents. Therefore, the industry needs an accumulator with more reliable performance. The metal bellows accumulator with a special laminated structure made of ultra-thin stainless steel has the advantages of high pressure resistance, high explosion resistance, high energy storage, and high reliability.

[0003] In the related art, during the process of extruding the tube blank to obtain the finished ABS accumulator bellows, the finished ABS accumulator bellows is inevitably deformed and misaligned. Summary of the invention

[0004] In view of this, the present application provides a forming die and a forming method for an ABS accumulator bellows, which can effectively reduce the deformation error during the extrusion forming process.

[0005] In a first aspect, the present application provides a forming die for an ABS accumulator bellows of an intelligent vehicle, comprising:

[0006] a guide member for supporting the tube blank by inserting the inner cavity of the tube blank to be formed;

[0007] - first model;

[0008] - Second model;

[0009] A driving mechanism, used for driving the first die and the second die to close the die to extrude the tube blank to obtain a corrugated tube;

[0010] and a beam-shaped component configured to be movable along a straight line, wherein the beam-shaped component is operatively fixed to the deformed portion of the tube blank during the tube blank extrusion forming process to constrain the deformation direction of the deformed portion to be the movable direction of the beam-shaped component.

[0011] Optionally, the beam-shaped component includes a movable rod that can be movably arranged along a straight line, and an adsorption component is fixed to the movable rod to be fixed to the deformation part by adsorption force.

[0012] Optionally, the adsorbent is a suction cup.

[0013] Optionally, an elastic member is further included, one end of which is fixed and the other end is connected to the beam assembly.

[0014] Optionally, a locking assembly for locking the movement of the beam-shaping assembly is also included.

[0015] Optionally, the locking member is a latch member.

[0016] Optionally, the guide member is provided with a pushing member for pushing the tube blank to move along the insertion direction of the guide member.

[0017] Optionally, a limit block can be slidably configured on the guide member.

[0018] In a second aspect, the present application provides a forming method for an ABS accumulator bellows, which uses the above-mentioned forming mold to form a tube blank to be formed.

[0019] In the forming die and forming method provided above, when performing the extrusion forming operation, the operator inserts the guide into the inner cavity of the tube blank as the raw material to support and position the tube blank. At the same time, the operator operates to fix the beam-shaped component to the deformed part of the tube blank (i.e., the part of the tube blank that does not contact the first mold and the second mold). The operation of the driving mechanism will drive the first mold and the second mold to close the mold to produce extrusion forming. In this way, during the extrusion forming process, the deformed part of the tube blank is constrained by the beam-shaped component and can only deform along the active direction of the beam-shaped component, while deformation in other directions is restricted. This effectively reduces the deformation inaccuracy of the tube blank during the extrusion forming process, and ensures the product quality of the finished smart car ABS accumulator bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0021] Figure 1 A schematic diagram of the structure of the bellows formed when the first section of the bellows reaches the processing position is provided for the embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of the bellows forming when the first section of the bellows processing is completed is provided for the embodiment of the present application;

[0023] Figure 3 A schematic diagram of the structure of the bellows forming when the second section of the bellows reaches the processing position is provided for the embodiment of the present application;

[0024] Figure 4 A structural schematic diagram of a locking assembly in a suction cup is provided for an embodiment of the present application.

[0025] Figure 5A schematic structural diagram of a limit block is provided for an embodiment of the present application.

[0026] The components in the figure are marked as follows:

[0027] 1-driving mechanism; 2-beam-forming assembly; 3-first die; 4-limiting block; 5-guide member; 6-push rod; 7-tube blank; 8-second die; 201-locking assembly; 501-sliding groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0032] Before introducing the technical solution of the present application, it is necessary to explain the background of the invention of the present application.

[0033] It is common that in the related art, during the process of extruding the tube blank to obtain the finished product of the smart car ABS accumulator bellows, the tube blank usually deforms at its deformation part (i.e., the part of the tube blank that does not contact the first die and the second die, such as the middle position of the tube section constituting the tube blank). The deformation is non-directional, not only in the vertical direction of the extrusion direction (i.e., the insertion direction of the guide, or the axial direction of the tube blank), i.e., the predetermined direction, but also in other non-predetermined directions such as the extrusion direction. The deformation in these non-predetermined directions will cause serious misalignment of the shape of the formed bellows, resulting in defects in the finished product.

[0034] When faced with the above-mentioned difficulty of reducing deformation in non-predetermined directions during the tube billet extrusion forming process, the usual means used by technical personnel in the relevant field is to adjust the shape of the cavity of the first die 3 and the second die 8, that is, to design the shape of the cavity into the predetermined shape of the finished product, so as to achieve the correction of the deformation of the deformed part of the tube billet in non-predetermined directions through the constraint of the cavity with a pre-designed shape.

[0035] However, the inventors have found through experimental research that the above means are limited in their effect on eliminating deformation in non-predetermined directions. The reason is that the direction in which the first die 3 and the second die 8 extrudes the tube blank is usually along the axial direction of the tube blank, and the contact surface between the cavity of the first die 3 and the second die 8 and the tube blank is usually inclined to the extrusion direction. This results in that the deformed portion of the tube blank is not strictly constrained according to the contact surface determined by the cavity of the first die 3 and the second die 8 when it is deformed, and ultimately the cavity can only constrain the deformation of the local position of the deformed portion, but is powerless against the deformation of non-all positions of the deformed portion.

[0036] Based on the above inventors' creative awareness of the misalignment of the deformed part of the tube blank, and to overcome the shortcomings of the usual means of technicians in the field, the inventors have proposed a forming die. When implementing the extrusion forming operation, the operator inserts the guide 5 into the inner cavity of the tube blank as the raw material to support and position the tube blank. At the same time, the operator operates to fix the beam component 2 on the deformed part of the tube blank (that is, the part of the tube blank that does not contact the first mold 3 and the second mold 8). The operation of the drive mechanism 1 will drive the first mold 3 and the second mold 8 to close the mold to produce extrusion forming. In this way, during the extrusion forming process, the deformed part of the tube blank is constrained by the beam component 2, and can only deform along the active direction of the beam component 2, while the deformation in other directions is restricted. This effectively reduces the deformation misalignment of the tube blank during the extrusion forming process, and ensures the product quality of the finished smart car ABS accumulator bellows. Thus, the present invention was created.

[0037] See also Figure 1-3The present application provides a forming die for an ABS accumulator bellows of a smart car, comprising:

[0038] a guide member 5 for supporting the tube blank by inserting it into the inner cavity of the tube blank to be formed;

[0039] - First model 3;

[0040] - Second module 8;

[0041] A first driving mechanism 1, used for driving the first die 3 and the second die 8 to close the die to extrude the tube blank to obtain a corrugated tube;

[0042] And a beam-shaped component 2 is configured to be movable along a straight line. The beam-shaped component 2 is operatively fixed to the deformation portion of the tube blank during the tube blank extrusion forming process to constrain the deformation direction of the deformation portion to the movable direction of the beam-shaped component 2.

[0043] It should be understood that the term "mold closing" refers to the first mold 3 and the second mold 8 being close to each other to form the combination of their respective mold cavities. It should not be misunderstood that the mold closing here can be for the entire tube blank or for one of the tube sections constituting the tube blank. In the former implementation, the number of the first mold 3 and the second mold 8 is one; in the latter case, the number of the first mold 3 and the second mold 8 can be multiple or one.

[0044] The above statement that "the beam assembly 2 is configured to be movable along a straight line" can be implemented in a manner that is easily conceivable by a person skilled in the art. An exemplary manner can be listed, in which a fixed seat is configured to allow the beam assembly 2 to move. The fixed seat can be a hollow rod or sleeve, etc., and the cavity is used for the beam assembly 2 to be inserted for its movement. Of course, a movable groove can also be opened on a rod-shaped member or a block-shaped member, and the movable groove is used to accommodate the beam assembly 2 for it to slide therein. The fixed seat can be assembled on a frame, and the drive mechanism 1 is assembled on the frame.

[0045] The above statement "the beam assembly 2 is operatively fixed to the deformation portion of the tube blank" means that the beam assembly 2 is fixed to the deformation portion in an operative manner according to the needs of the operator, that is, the fixing or releasing of the beam assembly 2 to the deformation portion can be operatively selected. As an example, the beam assembly 2 is detachably fixed to the deformation portion of the tube blank.

[0046] As an implementation method of the beam-shaped component 2 being operatively fixed, the beam-shaped component 2 includes a movable rod movably arranged along a straight line, and an adsorption member fixed to the movable rod for being fixed to the deformation portion by adsorption force.

[0047] In this way, when the adsorption force of the adsorption member is lost, the movable rod cannot be fixed on the deformed portion; when the adsorption force is generated, the movable rod can be fixed on the deformed portion by adsorption.

[0048] It should be conceivable that the adsorption element can be in the form of magnetic attraction and the negative pressure of gas.

[0049] For the magnetic attraction, an electromagnet assembly can be used, that is, two mutually cooperating sets constituting a magnet assembly are installed on the movable rod and the deformation part respectively. When the magnetic attraction of the electromagnet assembly is generated (that is, when powered), the movable rod is adsorbed on the deformation part; when the magnetic attraction of the electromagnet assembly is lost, the movable rod will contact the fixed part of the deformation part.

[0050] As for the form of utilizing the negative pressure effect of gas, a suction cup can be used. The suction cup can be equipped with a suction mechanism and a connecting pipeline, etc., to suck the gas in the inner cavity of the suction cup so that the suction cup generates negative pressure.

[0051] As another implementation method of the beam assembly 2 being operatively fixed, a detachable connection mechanism may be configured to connect the beam assembly 2 and the deformation portion. The detachable connection mechanism includes but is not limited to a snap connection, a screw connection or a pin connection.

[0052] In a typical technical solution, the forming mold further comprises an elastic member (not shown in the figure), one end of the elastic member is fixed, and the other end is connected to the beam assembly 2.

[0053] The design consideration of the elastic member here is: the elastic force generated by the elastic member can drive the beam-shaped component 2 to return to its original position so that the beam-shaped component 2 can automatically contact and fix on other deformation parts, when the first mold 3 and the second mold 8 are closed for one section of the tube section constituting the tube blank and the number of the first mold 3 and the second mold 8 is one.

[0054] Here, the elastic member may be telescopic elastic, etc. The elastic member may be disposed in the fixing seat mentioned above.

[0055] See also Figure 4 In a typical technical solution, the forming mold further includes a locking component 201 for locking the movement of the beam component 2.

[0056] The design consideration of the locking assembly 201 is that, when the tube blank is loaded into the guide member 5, it may accidentally touch the beam assembly 2, causing the beam assembly 2 to move to a position where it is difficult to contact the deformed portion. At this time, the beam assembly 2 needs to be adjusted to a predetermined initial position to ensure that it can contact the deformed portion. However, such adjustment of the beam assembly 2 is operationally troublesome.

[0057] In order to save this trouble, the locking assembly 201 can lock the activity of the beam assembly 2. When the extrusion molding is about to be implemented, the locking can be released.

[0058] As one implementation of the locking assembly 201, the locking member is a latch member. Of course, as another implementation, the locking member may be a screw member or the like.

[0059] In the case where the first die 3 and the second die 8 are closed for one section of the tube that constitutes the tube blank and the number of the first die 3 and the second die 8 is one, in order to facilitate the processing of the tube section to be formed, a pushing member is provided on the guide member 5 to push the above-mentioned tube blank to move along the insertion direction of the guide member 5.

[0060] Like this, can operate pushing piece, after one of pipe sections is extruded and formed.

[0061] The pusher can be manual, or can be an electric push rod 6.

[0062] The pushing member may be slidably disposed on the guide member 5 to better constrain the pushing action generated by the pushing member to be linear.

[0063] In a typical technical solution, a limiting block 4 is slidably disposed on the guide member 5 .

[0064] Here, the design consideration of the limit block 4 is: the limit block 4 is used to fix the position of the pipe section during processing and forming, so as to prevent the pipe section from sliding along the guide member 5 during the extrusion forming process and causing forming defects.

[0065] See also Figure 5 It is implicitly disclosed that the above statement "the limit block 4 is slidably arranged" indicates that a sliding groove 501501 is provided on the guide member 5. As for the shape of the sliding groove 501501, it can be a straight strip groove.

[0066] It should be easy to imagine that a bolt fastener (not shown in the figure) is configured in the sliding groove 501501 to lock the limit block 4 in the adjusted position.

[0067] Regarding the specific structure of the aforementioned guide member 5, it can be a square rod or a square block, etc.

[0068] The driving mechanism 1 mentioned above can be any power mechanism for linear reciprocating motion of paper, such as an electric push rod 6, a hydraulic push rod 6 or a cylinder.

[0069] Please refer again Figure 1-Figure 3 , the following is a forming process for the metal bellows using the above-mentioned forming die.

[0070] Taking the metal bellows material as 304 stainless steel as an example, the forming process is:

[0071] The tube blank has four sections. During forming, the preformed tube blank is placed on the guide member 5, and the push rod 6 pushes the tube blank to the limit block 4. At this time, the first section of corrugation reaches the processing position (such as Figure 1 As shown, only one set of the first die 3, the second die 8 and the beam-shaped component 2 are drawn in the schematic diagram); then the first die 3 and the second die 8 are attached to the upper and lower ends of the first corrugation under the drive of the driving mechanism 1, and the beam-shaped component 2 is adsorbed on the middle section of the corrugation to prevent the middle section from shifting during the corrugation forming; then the locking component 201 in the beam-shaped component 2 is opened, and the first die 3 and the second die 8 compress the tube blank by 6.5 mm within 1.5 s to complete the processing of the first section of the corrugation (as shown in FIG. Figure 2 Then the locking assembly 201 in the beam assembly 2 is locked, the first die 3, the second die 8 and the beam assembly 2 leave the tube, and the limit block 4 moves; finally, the push rod 6 continues to push the tube, and the second section of the corrugation reaches the processing position (as shown in FIG. Figure 3 The above steps are repeated three times to complete the forming process.

[0072] Taking the metal bellows material as QBe2 beryllium bronze as an example, the forming process is:

[0073] The tube blank has seven sections. During forming, the preformed tube blank is placed on the guide member 5, and the push rod 6 pushes the tube blank to the limit block 4, at which time the first section of the corrugation reaches the processing position; then the first die 3 and the second die 8 are driven by the driving mechanism 1 to fit the upper and lower ends of the first corrugation, and the beam component 2 is adsorbed on the middle section of the corrugation to prevent the middle section from shifting during corrugation forming; then the locking component 201 in the beam component 2 is opened, and the first die 3 and the second die 8 compress the tube blank by 6.5mm within 2s to complete the processing of the first section of the corrugation; then the locking component 201 in the beam component 2 is locked, the first die 3, the second die 8 and the beam component 2 leave the tube blank, and the limit block 4 moves; finally, the push rod 6 continues to push the tube blank, and the second section of the corrugation reaches the processing position, and then the above steps are repeated six times, and the forming is completed.

[0074] Taking the metal bellows material as 304 stainless steel as an example, the forming process is:

[0075] The tube blank has four sections. During forming, the preformed tube blank is placed on the guide 5, and the push rod 6 pushes the tube blank to the limit block 4. At this time, the first section of the corrugation reaches the processing position; then the first die 3 and the second die 8 are driven by the driving mechanism 1 to fit the upper and lower ends of the first corrugation, and the beam component 2 is adsorbed on the middle section of the corrugation to prevent the middle section from shifting during corrugation forming; then the locking component 201 in the beam component 2 is opened, and the first die 3 and the second die 8 compress the tube blank by 7mm within 1s to complete the processing of the first section of the corrugation; then the locking component 201 in the beam component 2 is locked, the first die 3, the second die 8 and the beam component 2 leave the tube blank, and the limit block 4 moves; finally, the push rod 6 continues to push the tube blank, and the second section of the corrugation reaches the processing position, and then the above steps are repeated three times, and the forming is completed. A model for the forming of metal bellows was established based on Abaqus.

[0076] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A forming die for an ABS accumulator bellows, characterized in that: include: a guide member for supporting the tube blank by inserting the inner cavity of the tube blank to be formed; - first model; - Second model; A driving mechanism, used for driving the first die and the second die to close the die to extrude the tube blank to obtain a corrugated tube; and a beam assembly configured to be movable along a straight line, wherein the beam assembly is operatively fixed to a deformed portion of the tube blank during the tube blank extrusion forming process to constrain the deformation direction of the deformed portion to be the movable direction of the beam assembly; The beam-shaped component comprises a movable rod which can be movably arranged along a straight line, and an adsorption member which is fixed to the deformation part by adsorption force is fixed to the movable rod.

2. The forming die for the ABS accumulator bellows according to claim 1, characterized in that: The adsorption component is a suction cup.

3. The forming die for the ABS accumulator bellows according to claim 1, characterized in that: It also includes an elastic member, one end of which is fixed, and the other end of which is connected to the beam assembly.

4. The forming die for the ABS accumulator bellows according to claim 1, characterized in that: Also included is a locking assembly for locking the movement of the beam-shaping assembly.

5. The forming die for the ABS accumulator bellows according to claim 4, characterized in that: The locking assembly is a latch member.

6. The forming die for the ABS accumulator bellows according to claim 1, characterized in that: The guide member is provided with a pushing member for pushing the tube blank to move along the inserting direction of the guide member.

7. The forming die for the ABS accumulator bellows according to claim 1, characterized in that: A limiting block is slidably arranged on the guide member.

8. A method for forming an ABS accumulator bellows, characterized in that: The tube blank to be formed is formed using the forming die for the ABS accumulator bellows as claimed in claim 1.

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