Automobile rear overhang support blanking equipment

Abstract

The invention relates to the technical field of rear suspension support manufacturing, in particular to automobile rear suspension support blanking equipment which comprises an equipment body, the equipment body comprises a workbench, a blanking support is fixedly installed at the top of the middle end of the workbench, a blanking groove is formed between the bottom of the blanking support and the workbench, and a plurality of table plates are laid on the surface of the workbench. The multiple platens are connected with the working table in a clamping mode, falling holes are formed among the platens and communicate with the falling grooves, a blanking mechanism is arranged in the blanking support and comprises a shell and a hydraulic punch structure, one end of the hydraulic punch structure is fixedly installed at the top of the blanking support, and the other end of the hydraulic punch structure is fixedly installed on the working table. The shell is connected to the end, away from the blanking support, of the hydraulic punch structure in a covering mode, the top of the shell is connected with the bottom of the blanking support through an elastic piece, a covering and pressing structure is rotationally arranged in the shell, and the bottom end of the covering and pressing structure is flush with the bottom of the shell.

Description

Technical Field

[0001] The invention relates to the technical field of rear suspension bracket preparation, in particular to a punching device for a rear suspension bracket of an automobile. Background Art

[0002] The rear suspension bracket of the automobile is a key component of the automobile suspension system. Fig.11 As shown in , it is usually made of high-strength metal materials, has a complex and precise structure, and needs to withstand various forces from the road surface as well as vibrations and impacts during vehicle driving;

[0003] The preparation processes of automobile rear suspension brackets include casting, forging, stamping, welding, etc. In the stamping process, the order of punching first and then stamping has special considerations. If stamping is performed first, the complex structure that has been formed will hinder the subsequent punching, making the punching difficulty greatly increased. Therefore, when preparing the automobile rear suspension bracket nowadays, punching will be performed first, and then stamping will be performed;

[0004] However, in the punching process, the characteristics of the material have a significant impact on the punching quality. When the material hardness is high, although the strength of the rear suspension bracket can be guaranteed, the strong impact force will easily cause the overall deformation of the rear suspension bracket due to the difficulty of punching the material, affecting its dimensional accuracy and the accuracy of the installation position; when the material toughness is good, the material near the punching position will be subjected to excessive local force and unable to disperse the stress in time, resulting in local deformation such as bulges and depressions, which will not only affect the appearance, but also have an adverse effect on the coordination between the rear suspension bracket and other components;

[0005] Based on this, the invention discloses a punching device for a rear suspension bracket of an automobile. Summary of the invention

[0006] In order to solve the problems raised in the background technology, the present invention provides a punching device for automobile rear suspension bracket, which includes a device body, the device body includes a workbench, a punching bracket is fixedly installed on the top of the middle end of the workbench, a blanking trough is formed between the bottom of the punching bracket and the workbench, a plurality of table plates are laid on the surface of the workbench, and the plurality of table plates are connected to the workbench by a snap-fitting manner, and drop holes are formed between the plurality of table plates, and the drop holes are connected to the blanking trough;

[0007] A punching mechanism is arranged inside the punching bracket, and the punching mechanism includes a shell and a hydraulic punch structure, one end of which is fixedly mounted on the top of the punching bracket, and the shell is connected to the end of the hydraulic punch structure away from the punching bracket, and the top of the shell is connected to the bottom of the punching bracket through an elastic member, and a covering structure is rotatably arranged inside the shell, and the bottom end of the covering structure is flush with the bottom of the shell;

[0008] In the punching bracket, a plurality of the punching mechanisms are provided, and the plurality of the punching mechanisms are all independently controlled.

[0009] Preferably, the hydraulic punch structure includes a multi-stage hydraulic component installed on the top of the punching bracket, and a piston rod is slidably provided inside the multi-stage hydraulic component. The piston rod passes through the top plate of the punching bracket and extends into the interior of the punching bracket. The shell is fixedly installed at the middle end of the piston rod, and the end of the piston rod away from the multi-stage hydraulic component is located inside the shell.

[0010] As a further improvement of the technical solution, a punch head is installed at one end of the piston rod away from the multi-stage hydraulic component, and the punch head is connected to the end of the piston rod by a clamping connection.

[0011] As a further improvement of the present technical solution, the covering structure includes a pressing platform located at the lower end of the inner cavity of the shell, and the pressing platform is a hollow structure. A driving member is provided at the middle end of the inner cavity of the shell, one side of the driving member is connected to the inner wall of the shell, and the other end of the driving member is connected to the surface of the pressing platform.

[0012] As a further improvement of the present technical solution, the driving member includes a fixed support ring fixedly installed on the inner wall of the shell, the installation position of the fixed support ring is higher than the press platform, a driving motor is fixedly installed on the top of one side of the fixed support ring, the output shaft of the driving motor is fixedly connected to the rotating shaft of the gear, and a gear ring is fixedly installed on the outer wall of the upper end of the press platform, and the gear ring is meshingly connected to the gear.

[0013] Preferably, a limiting cavity is formed in the middle of the pressing platform, and the inner wall of the limiting cavity and the bottom of the pressing platform are both paved with grinding discs, and the surface of the grinding discs is rough.

[0014] Preferably, the grinding disc installed inside the limiting cavity is in a vertical state, and the grinding disc installed at the bottom of the pressing platform is in a horizontal state.

[0015] As a further improvement of the technical solution, the outer wall of the punch head is in contact with the surface of the grinding plate inside the limiting cavity.

[0016] As a further improvement of the technical solution, a middle ring plate is fixedly installed on the surface of the press table, the installation position of the middle ring plate is lower than the gear ring, the inner wall of the shell is provided with a side groove, and the middle ring plate is slidably supported inside the side groove.

[0017] Preferably, a baffle is installed on the inner wall of the lower end of the inner cavity of the shell, the pressing platform rotates inside the baffle, and the cross section of the baffle is in an inclined state.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the punching equipment of the rear suspension bracket of an automobile, the effect of enhancing the plasticity of the material is achieved: with the help of the covering and pressing structure, before punching, the driving motor is started, driving the gear to rotate the pressing table, and the bottom grinding plate and the rear suspension bracket body plate to be punched frictionally generate heat, thereby increasing the plate temperature and enhancing the plasticity of the material, which is beneficial to the deformation of the plate during subsequent punching, reducing brittle fracture, obtaining a flat punching section, reducing the punching force, and improving the punching quality.

[0020] 2. In this automobile rear suspension bracket punching equipment, the effect of improving punching accuracy is achieved: the inner wall grinding disc of the limiting cavity of the covering structure is in contact with the outer wall of the punch head. When the press table rotates, the grinding disc rotates accordingly to grind the protrusions and impurities on the surface of the punch head, maintain the shape accuracy of the punch head, ensure the punching accuracy, extend the service life of the punch head, and ensure the long-term stability of the punching quality.

[0021] 3. In this automobile rear suspension bracket punching equipment, the effect of deburring the hole mouth is achieved: after the punching is completed, the grinding disc at the bottom of the press table contacts the edge of the hole where burrs are generated due to the plastic deformation of the material during the rotation process, and the burrs are removed by friction using the rough surface of the grinding disc, making the edge of the hole smooth and flat, thereby improving the overall quality of the rear suspension bracket and ensuring the safety and stability of vehicle driving.

[0022] 4. In this automobile rear suspension bracket punching equipment, an auxiliary punching head sliding balance effect is achieved: the middle ring plate installed on the surface of the press table slides with the side groove of the inner wall of the shell below the gear ring. When the press table rotates, the middle ring plate slides smoothly in the side groove, providing additional support and guidance for the press table, limiting its radial shaking and axial displacement, ensuring the stable rotation of the press table, and then assisting the punching head to slide stably during punching, avoiding deviation or shaking, ensuring the punching accuracy and quality, and improving the operation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the installation structure of the punching mechanism of the present invention;

[0025] Figure 3 It is an overall front view of the present invention;

[0026] Figure 4 A cutaway top view of the blanking bracket of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the punch head of the present invention before starting;

[0028] Figure 6 It is a structural schematic diagram of the punch head of the present invention during the pressing process;

[0029] Figure 7 For the present invention Figure 6 A schematic diagram of the structure at A;

[0030] Figure 8 It is a schematic diagram of the internal structure of the housing of the present invention;

[0031] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure at B;

[0032] Fig.10 A cutaway bottom view of the housing of the present invention;

[0033] Fig.11 It is a schematic diagram of the finished installation structure of the rear suspension bracket body of the present invention.

[0034] The meaning of each number in the figure is:

[0035] 1. Equipment body; 11. Workbench; 12. Punching bracket; 13. Blanking chute; 10. Rear suspension bracket body;

[0036] 2. Blanking mechanism; 21. Platen; 22. Hydraulic punch structure; 23. Shell; 24. Pressing structure;

[0037] 221. Multi-stage hydraulic parts; 222. Punch head; 223. Piston rod;

[0038] 241, press table; 242, driving member; 243, limit cavity;

[0039] 2421, gear ring; 2422, gear; 2423, fixed support ring;

[0040] 3. Grinding disc;

[0041] 4. Middle ring plate; 41. Side groove;

[0042] 5. Page stop. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The existing stamping process of automobile rear suspension brackets mostly adopts the order of punching first and then forming, because forming first will hinder punching. The problems of this process are: the material properties have a great influence on punching, too high hardness, strong impact force can easily deform the bracket as a whole, affecting the accuracy; too good toughness will cause local deformation at the punching point, affecting the appearance and component matching.

[0045] To this end, the present invention provides a vehicle rear suspension bracket punching device, see Figure 1-Figure 4 As shown, it includes an equipment body 1, which includes a workbench 11. A punching bracket 12 is fixedly installed on the middle top of the workbench 11. A blanking trough 13 is formed between the bottom of the punching bracket 12 and the workbench 11. A plurality of table plates 21 are laid on the surface of the workbench 11. These table plates 21 are connected to the workbench 11 in a snap-fit ​​manner. Drop holes formed between the table plates 21 are connected to the blanking trough 13, so that waste generated during the punching process can pass through the drop holes and smoothly fall into the blanking trough 13, thereby realizing efficient collection of waste;

[0046] A punching mechanism 2 is arranged inside the punching bracket 12, and the punching mechanism 2 includes a shell 23 and a hydraulic punch structure 22. One end of the hydraulic punch structure 22 is fixed on the top of the punching bracket 12, and the shell 23 is connected to the end of the hydraulic punch structure 22 away from the punching bracket 12, so as to protect the internal structure. The top of the shell 23 is connected to the bottom of the punching bracket 12 through an elastic member. This elastic connection method enables the shell 23 to adaptively adjust its position according to the actual situation of the sheet during punching, thereby enhancing the stability of punching. The covering structure 24 is rotatably arranged inside the shell 23, and its bottom end is flush with the bottom of the shell 23. Before punching, the covering structure 24 can assist in fixing the sheet to be punched placed below, and can also grind the sheet through its own rotation in cooperation with the grinding disc 3 during the punching process, thereby improving the punching effect.

[0047] It is worth mentioning that in the punching bracket 12, a plurality of punching mechanisms 2 are provided, and these punching mechanisms 2 are independently controlled, which means that in actual production, each punching mechanism 2 can be flexibly controlled according to the punching requirements of different parts of the rear suspension bracket body 10 to achieve punching of complex shapes, greatly improving the processing flexibility and production efficiency of the equipment.

[0048] In the preparation of the rear suspension bracket of an automobile, a punching device is used to punch and cut the plate of the rear suspension bracket body 10, and the hydraulic punch structure 22 is a necessary structure for punching and cutting the plate of the rear suspension bracket body 10. The specific structure of the hydraulic punch structure 22 is disclosed below. The hydraulic punch structure 22 includes a multi-stage hydraulic component 221 installed on the top of the punching bracket 12. The multi-stage hydraulic component 221 is internally slidably provided with a piston rod 223. The piston rod 223 passes through the top plate of the punching bracket 12 and extends into the interior of the punching bracket 12. The shell 23 is fixedly installed at the middle end position of the piston rod 223, and the end of the piston rod 223 away from the multi-stage hydraulic component 221 is located inside the shell 23.

[0049] After long-term punching of the rear suspension bracket body 10 plate, the punching end will be worn, so it is necessary to replace the punching end. A punch head 222 is installed at the end of the piston rod 223 away from the multi-stage hydraulic component 221, and the punch head 222 and the end of the piston rod 223 are connected by a clip.

[0050] Specifically, refer to Figure 3 , Figure 4 and Figure 5 As shown, the hydraulic punch structure 22 is installed on the top of the punching bracket 12, and its core component is a multi-stage hydraulic component 221. The multi-stage hydraulic component 221 works through the internal hydraulic system. When the hydraulic oil is injected into different cavities inside the multi-stage hydraulic component 221, the multi-stage telescopic movement of the piston rod 223 can be realized according to the pressure change of the hydraulic oil. The piston rod 223 penetrates the top plate of the punching bracket 12 and extends to the inside of the punching bracket 12. In the middle position of the multi-stage hydraulic component 221, the housing 23 is fixedly installed on the piston rod 223;

[0051] It should be noted that: before the punching operation, the position of the platen 21 needs to be adjusted first. By adjusting the platen 21, the drop hole can be enlarged or reduced so that the waste generated by the punching can smoothly enter the drop groove 13. Then, the part of the rear suspension bracket body 10 that needs to be punched is placed under the shell 23;

[0052] When the multi-stage hydraulic component 221 is working, according to the preset punching force and stroke, the expansion and contraction of the piston rod 223 is accurately controlled by injecting and discharging the hydraulic oil. The expansion and contraction movement of the piston rod 223 directly drives the punch head 222 installed at its end to reciprocate up and down, thereby performing a punching and punching operation on the plate of the rear suspension bracket body 10;

[0053] It is worth mentioning that the punch head 222 is connected to the end of the piston rod 223 by a clamping method, such as a clamping groove and a clamping block structure. A clamping block (such as a ring or a block) protruding outward is provided at the end of the piston rod 223, and a matching clamping groove is provided at the connecting end of the punch head 222. When installing, the clamping groove is aligned with the clamping block and pushed axially. The clamping block is inserted into the clamping groove to complete the connection. When disassembling, it can be pulled out in the opposite direction; or an elastic clamping ring structure is adopted. An annular groove is machined at the end of the piston rod 223, and an elastic clamping ring installation groove is provided at the connecting end of the punch head 222, and an elastic clamping ring made of an elastic material such as spring steel is installed. When installing, the elastic clamping ring is compressed to reduce its diameter, and the punch head 222 is put on the piston rod 223. When the elastic clamping ring reaches the position of the annular groove, it returns to its original state, thereby realizing the clamping connection. It should be noted that for the clamping groove and the clamping block structure, from a mechanical point of view, According to the degree analysis, during the punching process, the punch head 222 is subjected to instantaneous high impact force, the card slot and the card block are closely matched, and can provide stable constraints in multiple directions. The card block is embedded in the card slot, and the contact area between the two is large, which can effectively disperse the punching force; and the elastic clamping ring is made of elastic materials such as spring steel, and has good elastic recovery ability and high strength. During installation, the compressed elastic clamping ring enters the annular groove at the end of the piston rod 223, and uses its elastic recovery force to tightly hold the piston rod 223. During the punching process, the elastic clamping ring can adapt to the slight deformation and vibration between the piston rod 223 and the punch head 222 caused by the impact force. When impacted, the elastic deformation of the elastic clamping ring can buffer part of the impact force and avoid the stress concentration problem caused by the rigid connection, thereby ensuring the reliability of the connection and ensuring that the punch head 222 stably performs the punching task.

[0054] When the rear suspension bracket body 10 is punched and punched, the plate of the rear suspension bracket body 10 can be assisted in fixing by the covering and pressing structure 24. The specific structure of the covering and pressing structure 24 is disclosed below. The covering and pressing structure 24 includes a pressing platform 241 located at the lower end of the inner cavity of the shell 23. The pressing platform 241 is a hollow structure. A driving member 242 is provided at the middle end of the inner cavity of the shell 23. One side of the driving member 242 is connected to the inner wall of the shell 23, and the other end of the driving member 242 is connected to the surface of the pressing platform 241.

[0055] Specifically, Figure 8 As shown, the driving member 242 includes a fixed support ring 2423 fixedly installed on the inner wall of the shell 23, the installation position of the fixed support ring 2423 is higher than the pressure platform 241, a driving motor is fixedly installed on the top of one side of the fixed support ring 2423, the output shaft of the driving motor is fixedly connected to the rotating shaft of the gear 2422, and a gear ring 2421 is fixedly installed on the outer wall of the upper end of the pressure platform 241, and the gear ring 2421 is meshingly connected with the gear 2422.

[0056] A limiting cavity 243 is formed in the middle of the pressing platform 241 , and the inner wall of the limiting cavity 243 and the bottom of the pressing platform 241 are both paved with grinding discs 3 , and the surface of the grinding discs 3 is in a rough state.

[0057] Since different positions on the surface of the press platform 241 contact different objects, the grinding disc 3 installed in the limiting cavity 243 is in a vertical state, and the grinding disc 3 installed at the bottom of the press platform 241 is in a horizontal state.

[0058] The outer wall of the punch head 222 fits the surface of the grinding plate 3 inside the limiting cavity 243 .

[0059] Further, combined with Figure 2 , Figure 8 and Fig.10 As shown, the driving member 242 is composed of a fixed support ring 2423 fixedly mounted on the inner wall of the shell 23 and positioned higher than the press platform 241, a driving motor fixed on the top of one side of the fixed support ring 2423, and a gear 2422 connected to the output shaft of the driving motor, and a gear ring 2421 mounted on the outer wall of the upper end of the press platform 241 and meshing with the gear 2422. A limiting cavity 243 is formed in the middle of the press platform 241, and the inner wall and the bottom of the press platform 241 are paved with grinding discs 3. Due to different contact objects, the grinding disc 3 inside the limiting cavity 243 is in a vertical state, and the grinding disc 3 at the bottom of the press platform 241 is in a horizontal state. The outer wall of the punch head 222 fits the surface of the grinding disc 3 inside the limiting cavity 243.

[0060] When performing blanking operations, refer to Figure 5 It can be seen that, first, the shell 23 and the press plate 241 will cover the surface of the rear suspension bracket body 10 plate to provide physical protection for it. The multi-stage hydraulic component 221 can adjust the drive amount according to the thickness of the rear suspension bracket body 10 plate to avoid excessive extrusion (this is the prior art and will not be elaborated here). Before the punch head 222 operates, the drive motor is started, and the motor drives the gear 2422 to rotate, thereby driving the press plate 241 connected to the gear ring 2421 to rotate synchronously. The grinding disc 3 at the bottom of the press plate 241 grinds the rear suspension bracket body 10 plate near the punching position during rotation. The friction heat generated by grinding can improve the punching effect. This is because when the metal material is heated, its internal atomic activity increases and the plasticity of the material increases, making it easier to plastically deform during the punching process and reducing brittle fracture, thereby making the punching section smoother, reducing the punching force, and improving the punching quality.

[0061] At the same time, the shell 23 and the press plate 241 attached to the surface of the plate of the rear suspension bracket body 10 can balance the stress generated by punching. During the punching process, the plate will be subjected to the impact force of the punch head 222, resulting in stress concentration. The shell 23 and the press plate 241 are evenly distributed on the surface of the plate, which can disperse the stress to a larger area. According to the principle of mechanics, when the area of ​​action of the force increases, the stress per unit area will decrease, thereby effectively reducing the deformation of the material caused by stress concentration and ensuring the punching accuracy of the rear suspension bracket body 10.

[0062] Further, combined with Figure 5 and Figure 6 The limiting cavity 243 in the middle of the pressing platform 241 plays an important role in the punching process. On the one hand, the rotating pressing platform 241 combined with the grinding disc 3 in the limiting cavity 243 can grind the punch head 222. Since the grinding disc 3 is adapted to the surface of the punch head 222, it can only remove excess protrusions or impurities on the surface of the punch head 222, and will not cause excessive grinding, thereby ensuring the shape accuracy of the punching head and further ensuring the accuracy of punching; on the other hand, the limiting cavity 243 can accurately locate the punching position. Before punching, the part of the rear suspension bracket body 10 plate to be punched is aligned with the limiting cavity 243. The shape and position of the limiting cavity 243 provide a clear reference for punching, which greatly limits the possibility of deviation of the punch head 222 during the punching process. During punching, the punch head 222 moves along the central axis direction of the limiting cavity 243, which effectively reduces the probability of skewness in punching and ensures the position accuracy of the punching hole, which is very important for the punching of components such as automobile rear suspension brackets that require extremely high structural accuracy.

[0063] In addition, since the limiting cavity 243 is adapted to the punch head 222, the grinding disc 3 installed at the bottom of the press table 241 can deburr the hole opening after the punching is completed. During the punching process, burrs will be generated on the edge of the hole due to the plastic deformation of the material. The grinding disc 3 contacts the edge of the hole when the press table 241 rotates, and uses its rough surface to rub and remove the burrs. For the rear suspension bracket of the automobile, the burrs at the hole may affect the assembly accuracy and connection reliability of subsequent parts. Through the deburring operation of the grinding disc 3, the edge of the hole can be made smoother and flatter, thereby improving the overall quality of the rear suspension bracket and ensuring that the components of the rear suspension bracket are tightly connected during the driving of the automobile, and the safety and stability of the vehicle will not be affected by stress concentration or assembly problems caused by burrs.

[0064] During the operation of the covering structure 24, in order to ensure that the pressing platform 241 has good balance when rotating, a middle ring plate 4 is fixedly installed on the surface of the pressing platform 241. The installation position of the middle ring plate 4 is lower than the gear ring 2421. A side groove 41 is opened on the inner wall of the shell 23, and the middle ring plate 4 is slidably supported inside the side groove 41.

[0065] The improvements are: See Figure 8 Combined with Fig. 9 As shown, the middle ring plate 4 is fixedly installed on the surface of the pressing platform 241, and the installation position of the middle ring plate 4 is set below the gear ring 2421. At the same time, a side groove 41 is opened on the inner wall of the shell 23, and the middle ring plate 4 is slidably supported inside the side groove 41. In this way, when the pressing platform 241 rotates, the middle ring plate 4 can slide smoothly in the side groove 41, providing additional support and guiding for the pressing platform 241. When the driving member 242 drives the pressing platform 241 to rotate, the cooperation between the middle ring plate 4 and the side groove 41 can effectively limit the radial shaking and axial displacement of the pressing platform 241 during the rotation process, ensuring that the pressing platform 241 always rotates stably around the predetermined central axis, thereby ensuring the balance of the rotation of the pressing platform 241, and ultimately ensuring the smooth progress and high-quality completion of the entire blanking and punching operation.

[0066] Since impurities are generated during the grinding or stamping process, if the impurities enter the shell 23, they may enter the driving member 242, causing problems such as jamming and increased wear between the rotating parts of the driving member 242. Therefore, a baffle 5 is installed on the inner wall of the lower end of the inner cavity of the shell 23, and the pressing platform 241 rotates inside the baffle 5, and the cross-section of the baffle 5 is inclined.

[0067] Furthermore, it is possible to Figure 6 and Figure 7 As can be seen, a baffle 5 with an inclined cross-section is installed on the inner wall of the lower end of the inner cavity of the shell 23, and the pressing platform 241 rotates inside the baffle 5. The inclined baffle 5 can make impurities more easily slide away from the driving member 242 under the action of gravity and its own inclined structure, thereby reducing the impurities entering the interior of the shell 23 during the grinding or stamping process and reducing the influence of impurities on the rotation of the driving member 242.

[0068] In summary, by providing a clamping-connected table plate 21 on the workbench 11, a drop hole connected to the blanking trough 13 is formed between the table plates 21, so that efficient collection of punching waste can be achieved. During the punching process, the waste can directly fall into the blanking trough 13 through the drop hole, ensuring smooth punching work.

[0069] Secondly, in combination with the punching mechanism 2 in the punching bracket 12, the hydraulic punch structure 22 provides punching power, and the multi-stage hydraulic component 221 accurately controls the extension and contraction of the piston rod 223 through the internal hydraulic system. The piston rod 223 drives the punch head 222 to complete the punching operation of the plate. The shell 23 is connected to the end of the hydraulic punch structure 22 away from the punching bracket 12 to protect the internal structure. At the same time, the top of the shell 23 is connected to the punching bracket 12 through an elastic member, so that the shell 23 can adjust its position adaptively according to the actual situation of the plate to enhance the punching stability;

[0070] Then, combined with the covering structure 24, it drives the press table 241 to rotate through the driving member 242. Before punching, the press table 241 rotates, and its bottom grinding disc 3 grinds the plate near the position to be punched. The heat generated by grinding can improve the plasticity of the plate, make the punching section smoother, reduce the punching force, and improve the punching quality. The limiting cavity 243 can not only grind the punch head 222, remove its surface impurities, and ensure the accuracy of punching, but also accurately locate the punching position to reduce the probability of skew in punching. After the punching is completed, the grinding disc 3 at the bottom of the press table 241 can remove burrs at the opening of the hole to improve the overall quality of the rear suspension bracket. In order to ensure the rotation balance of the press table 241, the middle ring plate 4 is provided to cooperate with the side groove 41 to limit the shaking and displacement of the press table 241 when it rotates. At the same time, the stopper 5 is installed on the inner wall of the lower end of the inner cavity of the shell 23. Its inclined design can make the impurities generated by grinding or punching slide away from the driving member 242 under the action of gravity, reducing the influence of impurities on the rotation of the driving member 242.

[0071] Finally, through multiple independently controlled punching mechanisms 2, each mechanism can be flexibly controlled according to the punching requirements of different parts of the rear suspension bracket of the automobile, which greatly improves the flexibility of equipment processing;

[0072] Finally, efficient, accurate and stable blanking and punching operations of automobile rear suspension brackets were achieved, which improved the preparation quality and production efficiency of rear suspension brackets. Efficient waste collection, stable blanking power, fine press 241 assistance and flexible blanking control jointly ensured the high-quality production of rear suspension brackets.

[0073] Working principle:

[0074] When in use, the sheet material of the automobile rear suspension bracket body 10 to be punched is placed on the workbench 11 composed of the table plates 21 connected by snap-fitting. At the same time, the punching mechanism 2 in the punching bracket 12 is ready. The multi-stage hydraulic component 221 in the punching mechanism 2 can accurately control the extension and retraction of the piston rod 223 according to the preset punching force and stroke through the internal precise hydraulic system. In addition, the shell 23 is connected to the end of the hydraulic punch structure 22 away from the punching bracket 12, which not only provides protection for the internal structure to prevent debris from entering and affecting the punching accuracy, but also the design of the top of the shell 23 being connected to the bottom of the punching bracket 12 through an elastic member can also enable the shell 23 to adaptively adjust its position according to the actual situation of the sheet material during punching, thereby enhancing the stability of punching.

[0075] Then, the equipment is started, and the driving member 242 drives the press plate 241 to rotate, and the grinding disc 3 laid on the bottom of the press plate 241 and the inner wall of the limiting cavity 243 starts to work. Before punching, the grinding disc 3 at the bottom of the press plate 241 grinds the plate near the position to be punched. The friction heat generated during the grinding process can improve the plasticity of the plate, making the punching section smoother, reducing the punching force, and improving the punching quality. After the punching is completed, the grinding disc 3 at the bottom of the press plate 241 can also deburr the hole opening to improve the overall quality of the rear suspension bracket. In this process, the middle ring plate 4 and the side groove 41 are closely matched to ensure the balance of the press plate 241 when rotating, and avoid affecting the punching effect due to shaking or displacement. At the same time, the inclined cross-sectional design of the baffle 5 allows the impurities generated during the grinding or stamping process to slide away from the driving member 242 under the action of gravity, reducing the impurities from entering the shell 23 and reducing the impact on the rotation of the driving member 242. Since a plurality of independently controlled punching mechanisms 2 are provided in the punching bracket 12, each punching mechanism 2 can be flexibly controlled according to the punching requirements of different parts of the rear suspension bracket of the automobile, so as to achieve punching of complex shapes, greatly improving the processing flexibility and production efficiency of the equipment. Finally, efficient, accurate and stable punching and punching operations of the rear suspension bracket of the automobile are realized, which significantly improves the preparation quality and production efficiency of the rear suspension bracket.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A punching device for automobile rear suspension bracket, characterized in that: The device comprises a device body (1), wherein the device body (1) comprises a workbench (11), a punching bracket (12) is fixedly mounted on the top of the middle end of the workbench (11), a blanking trough (13) is formed between the bottom of the punching bracket (12) and the workbench (11), a plurality of table plates (21) are laid on the surface of the workbench (11), the plurality of table plates (21) are connected to the workbench (11) by snapping, a drop hole is formed between the plurality of table plates (21), and the drop hole is connected to the blanking trough (13); A punching mechanism (2) is arranged inside the punching bracket (12), and the punching mechanism (2) comprises a shell (23) and a hydraulic punch structure (22), one end of the hydraulic punch structure (22) is fixedly mounted on the top of the punching bracket (12), the shell (23) is connected to the end of the hydraulic punch structure (22) away from the punching bracket (12), the top of the shell (23) is connected to the bottom of the punching bracket (12) through an elastic member, and a covering structure (24) is rotatably arranged inside the shell (23), and the bottom end of the covering structure (24) is flush with the bottom of the shell (23); In the punching bracket (12), a plurality of the punching mechanisms (2) are provided, and the plurality of the punching mechanisms (2) are all independently controlled.

2. The automobile rear suspension bracket punching equipment according to claim 1, characterized in that: The hydraulic punch structure (22) comprises a multi-stage hydraulic component (221) mounted on the top of the punching bracket (12); a piston rod (223) is slidably arranged inside the multi-stage hydraulic component (221); the piston rod (223) passes through the top plate of the punching bracket (12) and extends into the inside of the punching bracket (12); the housing (23) is fixedly mounted at the middle end of the piston rod (223); and one end of the piston rod (223) away from the multi-stage hydraulic component (221) is located inside the housing (23).

3. The automobile rear suspension bracket punching equipment according to claim 2, characterized in that: A punch head (222) is installed at one end of the piston rod (223) away from the multi-stage hydraulic component (221), and the punch head (222) is connected to the end of the piston rod (223) by clamping.

4. The automobile rear suspension bracket punching equipment according to claim 3, characterized in that: The covering structure (24) comprises a pressing platform (241) located at the lower end of the inner cavity of the shell (23); the pressing platform (241) is a hollow structure; a driving member (242) is provided at the middle end of the inner cavity of the shell (23); one side of the driving member (242) is connected to the inner wall of the shell (23); and the other end of the driving member (242) is connected to the surface of the pressing platform (241).

5. The automobile rear suspension bracket punching equipment according to claim 4, characterized in that: The driving member (242) comprises a fixed support ring (2423) fixedly mounted on the inner wall of the housing (23); the mounting position of the fixed support ring (2423) is higher than the pressing platform (241); a driving motor is fixedly mounted on the top of one side of the fixed support ring (2423); the output shaft of the driving motor is fixedly connected to the rotating shaft of the gear (2422); a gear ring (2421) is fixedly mounted on the outer wall of the upper end of the pressing platform (241); the gear ring (2421) is meshingly connected to the gear (2422).

6. The automobile rear suspension bracket punching equipment according to claim 5, characterized in that: A limiting cavity (243) is formed in the middle of the pressing platform (241), and grinding discs (3) are laid on the inner wall of the limiting cavity (243) and the bottom of the pressing platform (241), and the surface of the grinding discs (3) is in a rough state.

7. The automobile rear suspension bracket punching equipment according to claim 6, characterized in that: The grinding disc (3) installed inside the limiting cavity (243) is in a vertical state, and the grinding disc (3) installed at the bottom of the pressing platform (241) is in a horizontal state.

8. The automobile rear suspension bracket punching equipment according to claim 5, characterized in that: The outer wall of the punch head (222) is in contact with the surface of the grinding plate (3) inside the limiting cavity (243).

9. The automobile rear suspension bracket punching equipment according to claim 5, characterized in that: A middle ring plate (4) is fixedly mounted on the surface of the press platform (241), and the mounting position of the middle ring plate (4) is lower than the gear ring (2421). A side groove (41) is formed on the inner wall of the housing (23), and the middle ring plate (4) is slidably supported inside the side groove (41).

10. The automobile rear suspension bracket punching equipment according to claim 4, characterized in that: A baffle (5) is installed on the inner wall of the lower end of the inner cavity of the shell (23), and the pressing platform (241) rotates inside the baffle (5), and the cross section of the baffle (5) is in an inclined state.

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