Blanking preforming die

Abstract

The utility model provides a blanking preforming die which comprises a cutting assembly, a double-floating assembly, an upper die set and a lower die set, the upper die set and the lower die set are oppositely arranged, the upper die set can move in the direction close to or away from the lower die set so as to machine a material belt located between the upper die set and the lower die set, and the cutting assembly synchronously cuts off the material belt along with die assembly of the upper die set and the lower die set; the upper die set is provided with a material pressing face, a runner forming face and a punching face, the position of the material pressing face in the height direction of the punching face can be adjusted through the double-floating assembly, and the position of the runner forming face in the height direction of the punching face can be adjusted through the double-floating assembly. By adopting the scheme, the blanking procedure and the pre-processing procedure are integrated on the same die, the preparation cost of the metal pole plate is reduced, the preparation efficiency and the product stability are improved, the separation of the material belt from the punching surface and / or the runner forming surface in the die splitting process is realized through the relative movement of the material pressing surface, the runner forming surface and the punching surface, and the production efficiency is improved. And the discharging effect that the material belt falls off from the upper die set is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pole plate forming, in particular to a blanking preforming die. Background Art

[0002] The prior art preparation scheme for metal plates includes the following steps: blanking - preforming - forming - trimming - punching. Each step requires a corresponding mold for stamping. The number of stamping machines matches the stamping steps. The increase in the number of stamping machines leads to higher mold costs, especially for blanking and preforming, which are usually achieved with two independent molds. The cost is high, the efficiency is low, and the product stability is poor. It is easy for the material strip to be difficult to fall off from the upper mold assembly, making it difficult for subsequent processing to proceed normally. Utility Model Content

[0003] The utility model provides a blanking preforming die to solve the problems in the prior art that the blanking process and the preforming process are independent of each other, the cost is high, the efficiency is low, the product stability is poor, and the material strip is difficult to fall off from the upper die set after the mold is closed.

[0004] In order to solve the above problems, the utility model provides a blanking preforming mold, which includes a cutting component, a double floating component, and an upper mold group and a lower mold group arranged relatively. The upper mold group can move in a direction close to or away from the lower mold group to process the material strip located therebetween. The cutting component is located between the upper mold group and the lower mold group and cuts off the material strip synchronously with the closing of the upper mold group and the lower mold group. The upper mold group has a pressing surface, a flow channel forming surface and a punching surface. The double floating component is arranged in the upper mold group. The position of the pressing surface relative to the punching surface in the height direction can be adjusted by the double floating component, and the position of the flow channel forming surface relative to the punching surface in the height direction can be adjusted by the double floating component to facilitate the material strip to fall off from the flow channel forming surface and the punching surface.

[0005] Furthermore, the blanking preforming die has an initial state, a pressing state and a forming and punching state as the upper die group moves in the mold closing movement; when the blanking preforming die is in the initial state, the punching surface, the runner forming surface and the pressing surface are sequentially spaced in the direction of the mold closing movement of the upper die group; when the blanking preforming die is in the pressing state, the pressing surface and the runner forming surface are flush, and the punching surface is located above the pressing surface and the runner forming surface; when the blanking preforming die is in the forming and punching state, the pressing surface is located above the runner forming surface, and the punching surface is located below the runner forming surface.

[0006] Furthermore, the double floating component includes a first elastic component and a second elastic component. The first elastic component is used to drive the movement of the pressing surface, and the second elastic component is used to drive the movement of the runner forming surface. When the blanking preforming mold is in the initial state, the first elastic component and the second elastic component are both in a pre-compression state; when the blanking preforming mold is in the pressing state, the first elastic component is further compressed; when the blanking preforming mold is in the forming and punching state, the first elastic component and the second elastic component are both further compressed.

[0007] Furthermore, the first elastic component includes a plurality of first spring push rods, which are distributed along the circumference of the pressing surface; the second elastic component includes a plurality of second spring push rods, which are distributed along the circumference of the flow channel forming surface.

[0008] Furthermore, the upper mold group includes an upper mold base, an upper forming plate and an upper forming mold core embedded in the upper forming plate. The bottom surface of the upper forming plate forms a pressing surface, and the bottom surface of the upper forming mold core forms a runner forming surface. The upper mold base is located above the upper forming plate. The upper forming plate and the upper mold base can be arranged relatively close to or far away from each other. The double floating assembly is arranged on the upper mold base. The blanking preforming mold has an initial state, a pressing state and a forming and punching state as the upper mold group moves. The gap between the upper forming plate and the upper mold base remains unchanged during the process of the blanking preforming mold switching from the initial state to the pressing state, and the gap between the upper forming plate and the upper mold base gradually decreases during the process of the blanking preforming mold switching from the pressing state to the forming and punching state.

[0009] Furthermore, the upper forming plate has a limiting hole, and the side of the upper mold base facing the upper forming plate has a limiting groove corresponding to the limiting hole, and the upper forming mold core is movably arranged in the limiting hole and the limiting groove, and the double floating component includes a first elastic component and a second elastic component, the bottom end of the first elastic component protrudes from the bottom of the upper mold base and abuts against the upper forming plate, and the bottom end of the second elastic component protrudes from the bottom wall of the limiting groove and abuts against the upper forming mold core, and when the blanking preforming mold is in a forming and punching state, the upper forming mold core abuts against the bottom wall of the limiting groove.

[0010] Furthermore, in the closing movement direction of the upper mold group, the upper mold base includes a base body, a pad plate and a fixed plate stacked in sequence, the pad plate and / or the fixed plate are used to connect with the upper forming plate, the fixed plate has an avoidance hole, the inner wall of the avoidance hole and the surface of the pad plate form a limiting groove, and when the blanking preforming mold is in a forming and punching state, the upper forming mold core abuts against the pad plate.

[0011] Furthermore, the upper mold group also includes a transfer assembly, and the transfer assembly or the upper forming plate has a limiting guide groove extending along the movement direction of the upper mold group. The upper forming plate is connected to the upper mold base through the transfer assembly and is movably arranged along the extension direction of the limiting guide groove to limit the movement of the upper forming plate relative to the upper mold base.

[0012] Furthermore, the upper mold group also includes a connecting component, one end of the connecting component is movably arranged in the upper mold base, and the other end of the connecting component is fixedly connected to the top surface of the upper molding core. A stop step is provided in the upper mold base, and a corresponding stop member is provided on the connecting component, and the bottom surface of the stop member and the top surface of the stop step are stop-matched.

[0013] Furthermore, the upper die assembly also includes a punch fixedly arranged on the upper die seat, the upper forming die core has a penetrating avoidance hole, the punch is inserted in the avoidance hole, and the bottom surface of the punch forms a punching surface. When the blanking preforming die is in an initial state or a pressing state, the punching surface is located in the avoidance hole. When the blanking preforming die is in a forming punching state, the punching surface protrudes out of the avoidance hole and passes through the material strip to abut against the lower die assembly.

[0014] Furthermore, the upper forming plate includes a pressure plate and a stop plate stacked on each other, and a part of the double floating assembly is connected to the side of the stop plate away from the pressure plate; the upper forming mold core includes an upper mold core body and a stop seat stacked on each other, and another part of the double floating assembly is connected to the side of the stop seat away from the upper mold core body.

[0015] Furthermore, the runner forming surface has a preformed structure for processing the runner on the material strip, and the bottom of the preformed structure has an exhaust hole, which is used to discharge the compressed air in the enclosed space formed between the preformed structure of the runner forming surface and the material strip during the closing process of the blanking preformed mold.

[0016] Furthermore, the blanking preforming mold also includes a cutting component, the blanking preforming mold has a material strip inlet, the cutting component is located on the side of the upper mold group and the lower mold group close to the material strip inlet, the cutting component includes an upper shearing knife and a lower shearing knife respectively arranged on the upper mold group and the lower mold group, the upper shearing knife has a first step surface, the lower shearing knife has a second step surface, the first step surface and the second step surface are opposite in the height direction, during the closing process of the blanking preforming mold, the first step surface and the second step surface abut to form a bending protrusion at the position where the material strip is cut.

[0017] Furthermore, the shearing lower knife has a forming protrusion arranged on the edge, and the shearing upper knife has a corresponding forming groove, the forming groove and the forming protrusion respectively form a first step surface and a second step surface, and the shearing lower knife can be raised and lowered in the lower mold group. During the closing process of the blanking preforming mold, the forming groove and the forming protrusion cooperate and clamp part of the material strip between them, and the shearing upper knife presses down the shearing lower knife and moves downward as a whole to cut the material strip through the height difference between the surface where the forming groove and the forming protrusion cooperate and the top surface of the lower mold group, and the cutting position of the material strip is located on one side of the bending protrusion.

[0018] Furthermore, the blanking preforming mold also includes a lifting assembly, which is arranged on the side of the cutting assembly close to the material strip entrance. The lifting assembly includes a plurality of elastic floating pins arranged in the lower mold group. Before the blanking preforming mold is closed, the top ends of the plurality of elastic floating pins protrude from the top surface of the lower mold group to lift up the material strip on the lower mold group; during the closing process of the blanking preforming mold, the top ends of the plurality of elastic floating pins are gradually compressed into the lower mold group.

[0019] By applying the technical solution of the utility model, a blanking preforming mold is provided, which includes a cutting component, a double floating component, and an upper mold group and a lower mold group arranged relatively to each other. The upper mold group can move toward or away from the lower mold group to process the material strip located therebetween. The cutting component is located between the upper mold group and the lower mold group and cuts the material strip synchronously with the closing of the upper mold group and the lower mold group. The upper mold group has a pressing surface, a flow channel forming surface, and a punching surface. The double floating component is arranged in the upper mold group. The position of the pressing surface relative to the punching surface in the height direction can be adjusted by the double floating component. The position of the flow channel forming surface relative to the punching surface in the height direction can be adjusted by the double floating component, and the position of the flow channel forming surface relative to the punching surface in the height direction can be adjusted by the double floating component to facilitate the material strip to fall off from the flow channel forming surface and the punching surface.

[0020] By adopting this solution, the blanking process and the pre-processing process are integrated into the same mold, avoiding the situation in the prior art where the two processes are implemented by two independent molds, which is beneficial to reducing the preparation cost of metal plates and improving the preparation efficiency and product stability of metal plates. Through the double floating assembly, any two of the three surfaces, namely, the pressing surface, the flow channel forming surface and the punching surface, can move relative to each other in the height direction during the mold closing process and the mold separation process. This arrangement facilitates the separation of the material strip from the punching surface and / or the flow channel forming surface during the mold separation process through the relative movement of the three surfaces, which is beneficial to improving the unloading effect of the material strip falling off the upper mold assembly, avoiding the situation where the material strip is difficult to fall off from the upper mold assembly, resulting in the obstruction of the operation of the blanking preforming mold, and ensuring the reliability and stability of the operation of the blanking preforming mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 A schematic structural diagram of a blanking preforming die provided in an embodiment of the utility model is shown;

[0023] Figure 2 Shows Figure 1 A sectional view of an upper die assembly of a blanking preforming die;

[0024] Figure 3 Shows Figure 1 Schematic diagram of the internal structure of the blanking preforming die;

[0025] Figure 4 Shows Figure 3 A magnified view of a selected location in ;

[0026] Figure 5 Shows Figure 3 A schematic diagram of a partial structure of a blanking preforming die in an initial state;

[0027] Figure 6 Shows Figure 5 A magnified view of a selected location in ;

[0028] Figure 7 Shows Figure 3 A schematic diagram of a partial structure of a blanking preforming die in a material pressing state;

[0029] Figure 8 Shows Figure 7 A magnified view of a selected location in ;

[0030] Fig. 9 Shows Figure 3 A schematic diagram of a portion of the structure of the blanking preforming die in the forming and punching state;

[0031] Fig.10 Shows Fig. 9 A magnified view of a selected location in ;

[0032] Fig.11 Shows Figure 1 A schematic diagram of the structure of the runner forming surface in the blanking preforming die;

[0033] Fig.12 Shows Figure 3 Schematic diagram of the cutting of the material sheet by the cutting component in the blanking preforming die;

[0034] Fig.13 Shows Figure 1 A diagram showing a process of a cutting component cutting a material strip in a blanking preforming die;

[0035] Fig.14 Shows Fig.10 Diagram of the cutting and forming of the material sheet by the center-cut material component.

[0036] The above drawings include the following reference numerals:

[0037] 1. Material strip;

[0038] 10. Upper die set; 101. Pressing surface; 102. Runner forming surface; 1021. Preforming structure; 1022. Exhaust hole; 103. Punching surface; 104. Material strip inlet; 11. Upper die seat; 111. Seat body; 112. Backing plate; 113. Fixing plate; 12. Upper forming plate; 121. Pressing plate; 122. Stop plate; 13. Upper forming core; 131. Upper core body; 132. Stop seat; 14. Connecting assembly; 141. Stopper; 15. Punch; 16. Drawbead insert;

[0039] 20. lower die assembly; 21. lower forming die core; 22. lower forming plate; 23. lower die base;

[0040] 30. Cutting component; 31. Upper shearing knife; 32. Lower shearing knife;

[0041] 40. Double floating assembly; 41. First spring push rod; 42. Second spring push rod;

[0042] 50. Adapter assembly;

[0043] 60, ejector assembly; 61, elastic floating pin; 611, stop screw; 612, return spring; 613, ejector pin; 614, floating pin;

[0044] 70. Guide assembly; 71. Bidirectional cross ball guide column; 72. Guide column groove;

[0045] 80. Buffer assembly; 81. Nitrogen spring component; 82. Limit seat. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0047] like Figures 1 to 14As shown, an embodiment of the utility model provides a blanking preforming mold, which includes a cutting component 30, a double floating component 40, and an upper mold group 10 and a lower mold group 20 arranged relatively. The upper mold group 10 can move in a direction close to or away from the lower mold group 20 to process the material strip 1 located therebetween. The cutting component 30 is located between the upper mold group 10 and the lower mold group 20 and cuts off the material strip 1 synchronously with the clamping of the upper mold group 10 and the lower mold group 20; the upper mold group 10 has a pressing surface 101, a flow channel forming surface 102 and a punching surface 103, and the double floating component 40 is arranged in the upper mold group 10. The position of the pressing surface 101 relative to the punching surface 103 in the height direction can be adjusted by the double floating component 40, and the position of the flow channel forming surface 102 relative to the punching surface 103 in the height direction can be adjusted by the double floating component 40, so as to facilitate the material strip 1 to fall off from the flow channel forming surface 102 and the punching surface 103.

[0048] In this embodiment, the blanking process and the pre-processing process are integrated into the same mold, which avoids the situation in the prior art where the two processes are implemented by two independent molds, which is beneficial to reducing the preparation cost of the metal plate, improving the preparation efficiency of the metal plate and the product stability. Through the double floating component 40, any two of the three, the pressing surface 101, the flow channel forming surface 102 and the punching surface 103, can move relative to each other in the height direction during the mold closing process and the mold separation process. This arrangement facilitates the separation of the material strip 1 from the punching surface 103 and / or the flow channel forming surface 102 during the mold separation process through the relative movement of the three, which is beneficial to improving the unloading effect of the material strip 1 falling off from the upper mold assembly 10, avoiding the situation where the material strip 1 is difficult to fall off from the upper mold assembly 10, resulting in the operation of the blanking preforming mold being blocked, and ensuring the reliability and stability of the operation of the blanking preforming mold.

[0049] The cutting assembly 30 is used to cut the material strip into plate segments after each mold closing. The plate segments are transported to the next process for processing the metal plate structure, and then the material strip continues to move for the next blanking-preforming.

[0050] like Figures 1 to 10 As shown, the blanking preforming die has an initial state, a pressing state and a forming and punching state as the upper die set 10 moves in the mold closing direction; when the blanking preforming die is in the initial state, the punching surface 103, the runner forming surface 102 and the pressing surface 101 are sequentially spaced in the mold closing direction of the upper die set 10; when the blanking preforming die is in the pressing state, the pressing surface 101 and the runner forming surface 102 are flush, and the punching surface 103 is located above the pressing surface 101 and the runner forming surface 102; when the blanking preforming die is in the forming and punching state, the pressing surface 101 is located above the runner forming surface 102, and the punching surface 103 is located below the runner forming surface 102.

[0051] In this embodiment, during the mold closing movement of the upper mold assembly 10, the pressing surface 101 first contacts the top surface of the material strip 1 and presses the material strip 1 downward, and the pressing surface 101 and the runner forming surface 102 gradually become flush during the mold closing process. When the pressing surface 101 and the runner forming surface 102 are flush, both press the material strip 1 downward, and then the runner forming surface 102 and the punching surface 103 continue to move with the mold closing movement of the upper mold assembly 10 and descend relative to the pressing surface 101, and the runner forming surface 10 2 will move to the bottom of the pressing surface 101 and be used to process the plate flow channel. When the flow channel forming surface 102 can no longer move relative to the pressing surface 101, the punching surface 103 will continue to move with the mold closing movement of the upper mold assembly 10 and continue to descend relative to the flow channel forming surface 102. The punching surface 103 will move from above the pressing surface 101 and the flow channel forming surface 102 to below the pressing surface 101 and the flow channel forming surface 102 and pass through the material strip 1 to realize pre-punching of the material strip 1. On the contrary, during the mold separation movement of the upper die set 10, the punching surface 103 will first move up to above the material pressing surface 101 and the runner forming surface 102. Since the material strip 1 is still pressed on the lower die set 20 by the material pressing surface 101 and the runner forming surface 102, the punching surface 103 will be pulled out from the material strip 1 during the upward movement to achieve the separation of the two. Then, as the upper die set 10 continues to move up, the runner forming surface 102 will first move up relative to the material pressing surface 101. Since the material strip 1 is still pressed on the lower die set 20 by the material pressing surface 101 at this time, the runner forming surface 102 will move up relative to the material strip 1 and separate from the surface of the material strip 1. This arrangement is conducive to improving the unloading effect of the material strip 1 falling off the upper die set 10.

[0052] like Figures 1 to 10 As shown, the double floating component 40 includes a first elastic component and a second elastic component, the first elastic component is used to drive the pressing surface 101 to move, and the second elastic component is used to drive the flow channel forming surface 102 to move. When the blanking preforming mold is in the initial state, the first elastic component and the second elastic component are both in a pre-compression state; when the blanking preforming mold is in the pressing state, the first elastic component is further compressed; when the blanking preforming mold is in the forming punching state, the first elastic component and the second elastic component are further compressed. In this embodiment, when the blanking preforming mold is in the forming punching state, the compressed first elastic component will provide a stable downward pressure on the pressing surface 101, and the compressed second elastic component will provide a stable downward pressure on the flow channel forming surface 102; in the process of the blanking preforming mold switching from the forming punching state to the initial state (mold separation movement), the compressed first elastic component and the second elastic component will gradually return to the pre-compression state, and the second elastic component will return to the pre-compression state before the first elastic component. Among them, the pre-compression state can be understood as being compressed but with a small compression amplitude.

[0053] Preferably, the first elastic component includes a plurality of first spring push rods 41, which are distributed along the circumference of the binder surface 101; the second elastic component includes a plurality of second spring push rods 42, which are distributed along the circumference of the flow channel forming surface 102. This arrangement is conducive to ensuring the reliability and stability of the movement of the binder surface 101 and the flow channel forming surface 102 relative to the punching surface 103.

[0054] Specifically, the upper mold group 10 includes an upper mold base 11, an upper molding plate 12 and an upper molding core 13 embedded in the upper molding plate 12. The bottom surface of the upper molding plate 12 forms a pressing surface 101, and the bottom surface of the upper molding core 13 forms a flow channel molding surface 102. The upper mold base 11 is located above the upper molding plate 12. The upper molding plate 12 and the upper mold base 11 can be arranged relatively close to or far away from each other. The double floating assembly 40 is arranged on the upper mold base 11. The blanking preforming mold has an initial state, a pressing state and a forming and punching state as the upper mold group 10 moves in the mold closing movement. The gap between the upper molding plate 12 and the upper mold base 11 remains unchanged during the process of the blanking preforming mold switching from the initial state to the pressing state. The gap between the upper molding plate 12 and the upper mold base 11 gradually decreases during the process of the blanking preforming mold switching from the pressing state to the forming and punching state.

[0055] In this embodiment, the lower die set 20 includes a lower die seat 23, a lower forming plate 22, and a lower forming core 21 embedded in the lower forming plate 22. The upper forming plate 12 is directly opposite to the lower forming plate 22 and is used to process the main body of the metal plate. The upper forming core 13 and the lower forming core 21 are directly opposite to each other and are used to process the middle flow channel area of ​​the metal plate. On the other hand, there is a certain gap between the upper forming plate 12 and the upper die seat 11 to reserve a movement area for the relative movement between the two, thereby ensuring the effect of the double floating assembly 40 and the reliability of unloading the material strip 1.

[0056] Furthermore, the upper forming plate 12 has a limiting hole, and the side of the upper mold base 11 facing the upper forming plate 12 has a limiting groove corresponding to the limiting hole, and the upper forming mold core 13 is movably arranged in the limiting hole and the limiting groove. The double floating component 40 includes a first elastic component and a second elastic component. The bottom end of the first elastic component protrudes from the bottom of the upper mold base 11 and abuts against the upper forming plate 12, and the bottom end of the second elastic component protrudes from the bottom wall of the limiting groove and abuts against the upper forming mold core 13. When the blanking preforming mold is in a forming and punching state, the upper forming mold core 13 abuts against the bottom wall of the limiting groove.

[0057] In this embodiment, any two of the upper forming mold core 13, the upper mold base 11, and the upper forming plate 12 can be arranged to move relative to each other. The upper forming mold core 13 will gradually move upward during the process of the blanking preforming mold switching from the pressing state to the forming punching state until it abuts against the bottom wall of the limiting groove, and the blanking preforming mold switches to the forming punching state. In this way, the mold closing movement of the upper mold group 10 is restricted. Specifically, in the mold closing movement direction of the upper mold group 10, the upper mold base 11 includes a seat body 111, a pad 112, and a fixed plate 113 stacked in sequence, the pad 112 and / or the fixed plate 113 are used to connect with the upper forming plate 12, and the fixed plate 113 has an avoidance hole, and the inner wall of the avoidance hole and the surface of the pad 112 form a limiting groove around it. When the blanking preforming mold is in the forming punching state, the upper forming mold core 13 abuts against the pad 112. Such an arrangement is beneficial to ensuring the pressing effect of the upper molding core 13 on the material strip 1 and is beneficial to the molding of the electrode plate flow channel.

[0058] like Figures 1 to 10 As shown, the upper mold group 10 also includes a transfer assembly 50, and the transfer assembly 50 or the upper forming plate 12 has a limiting guide groove extending along the movement direction of the upper mold group 10. The upper forming plate 12 is connected to the upper mold base 11 through the transfer assembly 50 and is movably arranged along the extension direction of the limiting guide groove to limit the movement of the upper forming plate 12 relative to the upper mold base 11.

[0059] In this embodiment, the limiting guide groove is set in the upper forming plate 12, and the adapter assembly 50 includes an adapter block and a plurality of fasteners. The adapter block has adapter protrusions distributed on both sides of the adapter block in the height direction. The upper adapter block is fixedly penetrated on the pad 112, and the lower adapter block is penetrated in the limiting guide groove and slidably arranged along the extension direction of the limiting guide groove. The adapter block is fixedly connected to the fixed plate 113 through fasteners, and the lower adapter block is fixedly arranged on the lower side of the adapter block through fasteners. In this way, while realizing the connection between the upper forming plate 12 and the upper mold base 11, the relative movement of the two is guaranteed.

[0060] Specifically, the upper mold group 10 also includes a connecting component 14, one end of which is movably inserted into the upper mold base 11, and the other end of the connecting component 14 is fixedly connected to the top surface of the upper molding core 13. A stop step is provided in the upper mold base 11, and a corresponding stop member 141 is provided on the connecting component 14. The bottom surface of the stop member 141 and the top surface of the stop step are stop-matched.

[0061] In this embodiment, the connecting assembly 14 includes a bolt connector, the stopper 141 is a gasket and is sleeved under the bolt head of the bolt connector, the base body 111 has a first hole section, the pad 112 has a second hole section connected to the first hole section, and the upper forming mold core 13 has a threaded hole coaxial with the first hole section and the second hole section, wherein the radial dimension of the first hole section is greater than the radial dimension of the second hole section, and the connection position of the two hole sections forms a stop step, the size of the gasket is adapted to the first hole section, the size of the bolt connector is adapted to the second hole section, the radial dimension of the bolt head is greater than the radial dimension of the second hole section, the lower end of the bolt connector passes through the first hole section and the second hole section and is threadedly connected to the threaded hole of the upper forming mold core 13, the bolt connector and the gasket are movably arranged in the first hole section and the second hole section, and when the blanking preforming mold is in the initial state and the pressing state, the upper forming mold core 13 sags under the action of its own weight and is hung on the upper mold base 11 through the stop of the gasket and the stop step. This arrangement facilitates the connection between the upper molding die core 13 and the upper die base 11, while not affecting the relative movement between the two.

[0062] It should be noted that the upper forming plate 12 in this embodiment is connected to the upper die seat 11 through the adapter assembly 50 to limit the relative position of the upper forming plate 12 and the upper die seat 11, and the upper forming core 13 is connected to the upper die seat 11 through the connecting assembly 14 to limit the relative position of the upper forming core 13 and the upper die seat 11. The first spring push rod 41 is arranged on the upper die seat and abuts against the upper forming plate 12, and the second spring push rod 42 is arranged on the upper die seat and abuts against the upper forming core 13. In the initial state, the first spring push rod 41 and the second spring push rod 42 are both slightly compressed and in a pre-tightened state. Figure 2 As shown, the first spring push rod 41 and the second spring push rod 42 in this embodiment are formed by the abutment of a spring and a limit push rod. Preferably, the connection component 14 may also include an elastic member such as a spring, one end of which abuts against the bolt head and the other end abuts against the bottom wall of the first hole section to buffer the movement of the bolt connection member in the first hole section and provide an elastic reset force. Furthermore, the number of the connection components 14 can be set according to actual conditions and is not specifically limited.

[0063] like Figures 1 to 10 As shown, the upper die assembly 10 also includes a punch 15 fixedly arranged on the upper die seat 11, the upper forming die core 13 has a penetrating avoidance hole, the punch 15 is inserted into the avoidance hole, and the bottom surface of the punch 15 forms a punching surface 103. When the blanking preforming die is in the initial state or the pressing state, the punching surface 103 is located in the avoidance hole. When the blanking preforming die is in the forming punching state, the punching surface 103 protrudes out of the avoidance hole and passes through the material strip 1 to abut against the lower die assembly 20.

[0064] In this embodiment, the punch 15 always moves with the movement of the upper die holder 11, and when the upper forming plate 12 and the upper forming die core 13 are both pressed against the material strip 1, the punch 15 moves downward relative to the two and punches the material strip 1 to achieve pre-processing of the holes on the material strip 1. Furthermore, the movement of the punch 15 is not affected by the double floating assembly 40, so during the movement, the punch 15 is easy to unload due to the positions of the upper forming plate 12 and the upper forming die core 13 affected by the double floating assembly 40.

[0065] Specifically, the upper molding plate 12 includes a press plate 121 and a stop plate 122 stacked on each other, and a part of the double floating assembly 40 is connected to a side of the stop plate 122 away from the press plate 121; the upper molding core 13 includes an upper core body 131 and a stop seat 132 stacked on each other, and another part of the double floating assembly 40 is connected to a side of the stop seat 132 away from the upper core body 131. This arrangement prevents the double floating assembly 40 from directly acting on the press plate 121 and the upper core body 131, which may easily cause damage to the press plate 121 and the upper core body 131 after long-term use.

[0066] like Fig.11 As shown, the runner forming surface 102 has a preformed structure 1021 for processing the runner on the material strip 1, and the bottom of the preformed structure 1021 has an exhaust hole 1022, and the exhaust hole 1022 is used to discharge the compressed air in the closed space formed between the preformed structure 1021 of the runner forming surface 102 and the material strip 1 during the process of closing the blanking preformed mold. This arrangement avoids the situation where the mold closing is difficult due to compressed air, and ensures the reliability of the mold closing.

[0067] like Figure 12 to Figure 14 As shown, the blanking preforming mold also includes a cutting component 30, the blanking preforming mold has a material strip inlet 104, the cutting component 30 is located on one side of the upper mold group 10 and the lower mold group 20 near the material strip inlet 104, and the cutting component 30 includes a shearing upper knife 31 and a shearing lower knife 32 respectively arranged on the upper mold group 10 and the lower mold group 20, the shearing upper knife 31 has a first step surface, and the shearing lower knife 32 has a second step surface, the first step surface and the second step surface are directly opposite in the height direction, and during the closing process of the blanking preforming mold, the first step surface and the second step surface abut to form a bending protrusion at the cutting position of the material strip 1. In this way, a rectangular bending protrusion is set at the cutting position of the material strip 1, which increases the strength of the plate obtained after cutting, and avoids the situation in the prior art that when two offset rectangular surfaces are directly used for cutting, the end of the plate obtained after cutting the material strip 1 is an inclined surface, which causes the plate to be easily concave in the middle and warped on both sides due to gravity, and the positioning of the plate is inaccurate.

[0068] Specifically, the shearing lower blade 32 has a forming protrusion set on the edge, and the shearing upper blade 31 has a corresponding forming groove. The forming groove and the forming protrusion form a first step surface and a second step surface respectively. The shearing lower blade 32 can be raised and lowered in the lower mold assembly 20. During the process of closing the blanking preforming mold, the forming groove and the forming protrusion cooperate and clamp the part of the material strip 1 between them. The shearing upper blade 31 presses down the shearing lower blade 32 and moves downward as a whole to cut the material strip 1 through the height difference between the surface where the forming groove and the forming protrusion cooperate and the top surface of the lower mold assembly 20. The cutting position of the material strip 1 is located on one side of the bending protrusion. This arrangement is conducive to the forming of the bending protrusion and increases the strength of the edge of the plate obtained after cutting.

[0069] In this embodiment, the top surface of the lower forming plate 22 has a mounting groove for placing the shearing lower blade 32 and avoiding the shearing upper blade 31. The cutting assembly 30 also includes an elastic lifting member, one end of which extends from the bottom wall of the mounting groove into the mounting groove and abuts against the shearing lower blade 32. The shearing lower blade 32 and the inner wall of the mounting groove have a limiting structure to limit the lifting height of the elastic lifting member on the shearing lower blade 32. Before the blanking preforming mold is closed, the shearing upper blade 31 and the shearing lower blade 32 are spaced apart. During the closing process of the blanking preforming mold, the shearing upper blade 31 will move toward the shearing lower blade 32 and clamp the material strip 1 between the two. During the clamping process, the forming groove and the forming protrusion cooperate to form a bending protrusion. After that, the shearing upper blade 31 will continue to move downward with the closing process and press the shearing lower blade 32 downward. The elastic lifting member is compressed, and the material strip 1 is cut by the height difference between the surface of the forming groove and the forming protrusion and the top surface of the lower mold assembly 20. During the parting process of the blanking preforming mold, the shearing lower knife 32 will rise and reset under the action of the elastic lifting member.

[0070] like Figures 1 to 4 As shown, the blanking preforming mold also includes a material lifting component 60, which is arranged on the side of the cutting component 30 close to the material strip inlet 104. The material lifting component 60 includes a plurality of elastic floating pins 61 arranged in the lower die set 20. Before the blanking preforming mold is molded, the top ends of the plurality of elastic floating pins 61 protrude from the top surface of the lower die set 20 to lift the material strip 1 on the lower die set 20; during the mold closing process of the blanking preforming mold, the top ends of the plurality of elastic floating pins 61 are gradually compressed into the lower die set 20. This arrangement is conducive to ensuring the conveying effect of the material strip 1 without affecting the mold closing movement. Specifically, the elastic floating pin 61 includes a stop screw 611, a return spring 612, a material lifting pin 613 and a floating pin 614 connected in sequence from bottom to top.

[0071] In this embodiment, the upper die set 10 further includes a drawbead insert 16, which is detachably arranged on the material holding surface 101 and surrounds the runner forming surface 102. This arrangement avoids the problem of machining the blank holder ring directly on the upper die set 10 and the lower die set 20 by a CNC machine tool in the prior art, which is difficult to debug, and allows operators to disassemble and assemble appropriate drawbead inserts according to actual conditions to mold a blank holder ring of a suitable size, which is conducive to improving the applicability of the blanking preforming mold.

[0072] Specifically, a guide assembly 70 is further included between the upper die set 10 and the lower die set 20. The guide assembly 70 includes a bidirectional cross ball guide pin 71 and a guide pin groove 72 respectively arranged on the upper die set 10 and the lower die set 20. During the mold closing process of the upper die set 10 and the lower die set 20, the bidirectional cross ball guide pin 71 gradually penetrates into the guide pin groove 72 and cooperates with the inner wall of the guide pin groove 72. Such an arrangement is conducive to ensuring the accuracy of mold closing.

[0073] Furthermore, the blanking preforming mold further includes a buffer assembly 80, which includes a nitrogen spring component 81 and a stopper 82 arranged opposite to the nitrogen spring component 81. During the mold closing process of the upper mold assembly 10 and the lower mold assembly 20, the nitrogen spring component 81 and the stopper 82 cooperate and are gradually compressed. This arrangement provides a certain buffer for mold closing and reduces the impact of the impact load on the material strip 1 during the mold closing process.

[0074] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0075] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0076] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0077] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0078] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0079] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A blanking preforming die, characterized in that: The blanking preforming die comprises a cutting assembly (30), a double floating assembly (40), and an upper die set (10) and a lower die set (20) arranged relatively to each other. The upper die set (10) can move in a direction close to or away from the lower die set (20) to process a material strip (1) located between the upper die set (10) and the lower die set (20). The cutting assembly (30) is located between the upper die set (10) and the lower die set (20) and cuts off the material strip (1) synchronously with the closing of the upper die set (10) and the lower die set (20). The upper die set (10) has a pressing surface (10 1), a flow channel forming surface (102) and a punching surface (103), the double floating component (40) is arranged in the upper mold group (10), the position of the pressing surface (101) relative to the punching surface (103) in the height direction can be adjusted by the double floating component (40), and the position of the flow channel forming surface (102) relative to the punching surface (103) in the height direction can be adjusted by the double floating component (40), so as to facilitate the detachment of the material strip (1) from the flow channel forming surface (102) and the punching surface (103).

2. The blanking preforming die according to claim 1, characterized in that: The blanking preforming die has an initial state, a material pressing state and a forming and punching state as the upper die set (10) moves in a closing motion; When the blanking preforming die is in the initial state, the punching surface (103), the runner forming surface (102) and the pressing surface (101) are sequentially spaced in the mold closing movement direction of the upper die assembly (10); When the blanking preforming die is in the pressing state, the pressing surface (101) and the flow channel forming surface (102) are flush, and the punching surface (103) is located above the pressing surface (101) and the flow channel forming surface (102); When the blanking preforming die is in the forming and punching state, the pressing surface (101) is located above the flow channel forming surface (102), and the punching surface (103) is located below the flow channel forming surface (102).

3. The blanking preforming die according to claim 2, characterized in that: The double floating component (40) comprises a first elastic component and a second elastic component, wherein the first elastic component is used to drive the material holding surface (101) to move, and the second elastic component is used to drive the flow channel forming surface (102) to move. When the blanking preforming die is in the initial state, the first elastic component and the second elastic component are both in a pre-compression state; When the blanking preforming die is in the material pressing state, the first elastic component is further compressed; When the blanking preforming die is in the forming and punching state, both the first elastic component and the second elastic component are further compressed.

4. The blanking preforming die according to claim 3, characterized in that: The first elastic component comprises a plurality of first spring push rods (41), and the plurality of first spring push rods (41) are distributed along the circumference of the pressing surface (101); the second elastic component comprises a plurality of second spring push rods (42), and the plurality of second spring push rods (42) are distributed along the circumference of the flow channel forming surface (102).

5. The blanking preforming die according to claim 1, characterized in that: The upper die assembly (10) comprises an upper die seat (11), an upper molding plate (12) and an upper molding core (13) embedded in the upper molding plate (12); the bottom surface of the upper molding plate (12) forms the material pressing surface (101); the bottom surface of the upper molding core (13) forms the flow channel molding surface (102); the upper die seat (11) is located above the upper molding plate (12); the upper molding plate (12) and the upper die seat (11) can be arranged relatively close to or far from each other; the double floating assembly (40 ) is arranged on the upper die seat (11), and the blanking preforming mold has an initial state, a pressing state and a forming and punching state as the upper die group (10) moves in a mold-closing manner. The gap between the upper forming plate (12) and the upper die seat (11) remains unchanged during the process of the blanking preforming mold switching from the initial state to the pressing state, and the gap between the upper forming plate (12) and the upper die seat (11) gradually decreases during the process of the blanking preforming mold switching from the pressing state to the forming and punching state.

6. The blanking preforming die according to claim 5, characterized in that: The upper forming plate (12) has a limiting hole, and the upper die seat (11) has a limiting groove corresponding to the limiting hole on one side facing the upper forming plate (12). The upper forming die core (13) is movably arranged in the limiting hole and the limiting groove. The double floating component (40) includes a first elastic component and a second elastic component. The bottom end of the first elastic component protrudes from the bottom of the upper die seat (11) and abuts against the upper forming plate (12), and the bottom end of the second elastic component protrudes from the bottom wall of the limiting groove and abuts against the upper forming die core (13). When the blanking preforming mold is in the forming and punching state, the upper forming die core (13) abuts against the bottom wall of the limiting groove.

7. The blanking preforming die according to claim 6, characterized in that: In the mold closing movement direction of the upper mold assembly (10), the upper mold base (11) includes a base body (111), a pad (112) and a fixed plate (113) stacked in sequence, the pad (112) and / or the fixed plate (113) are used to connect with the upper forming plate (12), the fixed plate (113) has an avoidance hole, the inner wall of the avoidance hole and the surface of the pad (112) surround to form the limiting groove, and when the blanking preforming mold is in the forming punching state, the upper forming mold core (13) abuts against the pad (112).

8. The blanking preforming die according to claim 5, characterized in that: The upper mold assembly (10) further comprises a transfer assembly (50), wherein the transfer assembly (50) or the upper molding plate (12) has a limiting guide groove extending along the movement direction of the upper mold assembly (10), and the upper molding plate (12) is connected to the upper mold base (11) via the transfer assembly (50) and is movably arranged along the extension direction of the limiting guide groove to limit the movement of the upper molding plate (12) relative to the upper mold base (11).

9. The blanking preforming die according to claim 5, characterized in that: The upper mold assembly (10) further comprises a connecting component (14), one end of which is movably inserted into the upper mold base (11), and the other end of which is fixedly connected to the top surface of the upper molding core (13). A stop step is provided in the upper mold base (11), and a corresponding stop member (141) is provided on the connecting component (14), wherein the bottom surface of the stop member (141) is stop-matched with the top surface of the stop step.

10. The blanking preforming die according to claim 5, characterized in that: The upper die assembly (10) further comprises a punch (15) fixedly arranged on the upper die seat (11); the upper forming die core (13) has a through avoidance hole; the punch (15) is inserted into the avoidance hole; the bottom surface of the punch (15) forms the punching surface (103); when the blanking preforming die is in the initial state or the pressing state, the punching surface (103) is located in the avoidance hole; when the blanking preforming die is in the forming punching state, the punching surface (103) protrudes out of the avoidance hole and passes through the material strip (1) to abut against the lower die assembly (20).

11. The blanking preforming die according to claim 5, characterized in that: The upper molding plate (12) includes a pressure plate (121) and a stop plate (122) stacked on each other, and a portion of the double floating component (40) is connected to a side of the stop plate (122) facing away from the pressure plate (121); the upper molding mold core (13) includes an upper mold core body (131) and a stop seat (132) stacked on each other, and another portion of the double floating component (40) is connected to a side of the stop seat (132) facing away from the upper mold core body (131).

12. The blanking preforming die according to claim 1, characterized in that: The flow channel forming surface (102) has a preformed structure (1021) for processing the flow channel on the material strip (1), and the bottom of the preformed structure (1021) has an exhaust hole (1022), and the exhaust hole (1022) is used to discharge the compressed air in the closed space formed between the preformed structure (1021) of the flow channel forming surface (102) and the material strip (1) during the closing process of the blanking preformed mold.

13. The blanking preforming die according to claim 1, characterized in that: The blanking preforming die has a material strip inlet (104), and the cutting component (30) is located on one side of the upper die group (10) and the lower die group (20) close to the material strip inlet (104). The cutting component (30) includes an upper shearing knife (31) and a lower shearing knife (32) respectively arranged on the upper die group (10) and the lower die group (20), the upper shearing knife (31) has a first step surface, and the lower shearing knife (32) has a second step surface, the first step surface and the second step surface are opposite in height direction, and during the closing process of the blanking preforming die, the first step surface and the second step surface abut against each other to form a bending protrusion at the position where the material strip (1) is cut.

14. The blanking preforming die according to claim 13, characterized in that: The shearing lower knife (32) has a forming protrusion arranged on the edge, and the shearing upper knife (31) has a corresponding forming groove, and the forming groove and the forming protrusion respectively form the first step surface and the second step surface, and the shearing lower knife (32) can be raised and lowered in the lower mold assembly (20). During the closing process of the blanking preforming mold, the forming groove and the forming protrusion cooperate and clamp the part of the material strip (1) between them, and the shearing upper knife (31) presses down the shearing lower knife (32) and moves downward as a whole to cut the material strip (1) through the height difference between the surfaces where the forming groove and the forming protrusion cooperate and the top surface of the lower mold assembly (20), and the cutting position of the material strip (1) is located on one side of the bending protrusion.

15. The blanking preforming die according to claim 13, characterized in that: The blanking preforming mold also includes a lifting component (60), which is arranged on a side of the cutting component (30) close to the material strip inlet (104), and the lifting component (60) includes a plurality of elastic floating pins (61) arranged in the lower mold group (20). Before the blanking preforming mold is closed, the top ends of the plurality of elastic floating pins (61) protrude from the top surface of the lower mold group (20) to lift up the material strip (1) on the lower mold group (20); during the closing process of the blanking preforming mold, the top ends of the plurality of elastic floating pins (61) are gradually compressed into the lower mold group (20).

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