A split-type forming hardware mold and forming process thereof

Abstract

The present invention relates to the field of hardware processing technology, and in particular to a split-type forming hardware mold and a forming process thereof. The present invention comprises a base, a lower mold base is fixed on the top of the base, a plurality of first elastic telescopic rods are embedded in a circular array on the top of the lower mold base, and a punch is fixedly connected to the top of the plurality of first elastic telescopic rods. The present invention arranges an electric telescopic rod, and the two electric telescopic rods drive arc plates to move toward each other the same distance, clamping a circular steel plate at the center of the top of the punch, so that the circular steel plate is evenly stressed during stamping. Subsequently, the motor is started, and in the process of the motor driving the cross bar to move, the stamping oil in the oil storage tank can be drawn out and sprayed on the top of the circular steel plate, which is beneficial to reducing the friction between the circular steel plate and the upper mold during stamping, and can also help prevent the stamped workpiece from adhering to the inner wall of the upper mold.

Description

Technical Field

[0001] The invention relates to the technical field of hardware processing, and in particular to a split-type forming hardware mold and a forming process thereof. Background Art

[0002] A split stamping die is a cold stamping process in which an upper die and a lower die are separately set up, and the plastic material between the upper die and the lower die is squeezed by closing the upper die and the lower die to cause plastic deformation, thereby obtaining the required parts. This process is often used for stamping and forming of hardware structural parts.

[0003] In the patent with publication number CN117299976B, a split-type precision metal mold is disclosed, including an annular punch, a left mold flap, a right mold flap and a lower mold base. The annular punch can move in the up and down directions, the left mold flap is located at the lower left of the annular punch, and the right mold flap is located at the lower right of the annular punch.

[0004] During the stamping process of the stainless steel basin, the staff is required to place the round steel plate on the lower mold. However, it is inconvenient to place the round steel plate in the center of the lower mold due to manual operation, which will cause the edge of the stainless steel basin formed by the stamping process to be uneven. At the same time, the mold will generate heat during the continuous stamping process. As the mold temperature increases, when the mold temperature is too high, there is a risk of scalding due to manual oiling. Therefore, it is inconvenient for the staff to apply stamping oil when the mold temperature is too high, which may cause the mold to be difficult to demold due to lack of stamping oil. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art that it is inconvenient to place the circular steel plate in the exact center of the lower mold due to manual operation, which will cause the edge of the stainless steel basin formed by the stamping process to be uneven. At the same time, the mold will generate heat during the continuous stamping process, which is inconvenient for the staff to apply stamping oil, which may lead to the mold being difficult to demold due to lack of stamping oil. A split-type molding hardware mold and its molding process are proposed.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: a split-type forming hardware mold, including a base, a lower mold base is fixed on the top of the base, a plurality of first elastic telescopic rods are embedded in a circular array on the top of the lower mold base, a punch is fixedly connected to the top of the plurality of first elastic telescopic rods, a clamping mechanism for clamping a circular steel plate above the punch is provided on the top of the base, an upper mold for stamping the circular steel plate is provided on the top of the base, an oil storage tank for storing stamping oil is provided on the top of the base, and a spraying mechanism is provided on the top of the base, and the spraying mechanism is used to spray the stamping oil in the oil storage tank onto the surface of the circular steel plate.

[0007] In a further embodiment, a cavity is opened inside the base, and a plurality of second elastic telescopic rods are embedded in a circular array at the inner bottom of the cavity, and a circular plate is fixed to the telescopic ends of the plurality of second elastic telescopic rods, and a plurality of vertical rods are fixed to the circular array at the top of the circular plate, and the top ends of the vertical rods pass through the top of the base, and a circular ring is fixed to the top ends of all the vertical rods, which is slidably connected to the outer wall of the punch.

[0008] In a further embodiment, the clamping mechanism includes two support rods, which are symmetrically arranged on the top of the base. An electric telescopic rod is fixed on the side of the support rod facing the punch. An arc plate is fixed to the telescopic end of the electric telescopic rod. The two arc plates are symmetrically arranged on the outside of the circular plate.

[0009] In a further embodiment, a plurality of exhaust pipes are fixed in a circular array on the top of the lower mold seat, the bottom ends of the exhaust pipes pass through the top of the lower mold seat and the base, the bottoms of the exhaust pipes are connected to the interior of the cavity, a plurality of exhaust holes are opened through the interior of the punch, the tops of the exhaust pipes are slidably inserted into the exhaust holes, and the exhaust holes and exhaust pipes are arranged one-to-one.

[0010] In a further embodiment, the spraying mechanism includes two support frames, which are symmetrically arranged on the top of the base and located on both sides of the oil storage tank. A sliding groove is opened on the side of the support frame facing the oil storage tank. A motor is fixed on one side wall of the support frame, and the output shaft of the motor passes through the side wall of the support frame. A threaded rod is fixed to the output shaft of the motor, and the other end of the threaded rod is rotatably connected to the inner wall of the sliding groove. A sliding block is threadedly connected to the outer wall of the threaded rod, and the sliding block is slidably connected to the sliding groove.

[0011] In a further embodiment, a cross bar is fixed between the two sliding blocks, a chamber is opened inside the cross bar, a plurality of nozzles are fixed in a linear array on the side of the cross bar facing the circular ring, the nozzles are connected to the chamber, a brush is fixed at the bottom of the cross bar, and a conveying assembly is arranged on the top of the base, and the conveying assembly is used to convey the stamping oil in the oil storage tank to the inside of the chamber.

[0012] In a further embodiment, the conveying assembly includes two hollow cylinders, which are symmetrically arranged on the top of the base through supporting columns, a second connecting pipe is fixedly connected on the outer wall of the end of the hollow cylinder away from the punch, and the other end of the second connecting pipe is fixedly connected to the interior of the end of the hollow cylinder close to the punch, a first connecting pipe is symmetrically fixedly connected on the side wall of the oil storage tank, the end of the first connecting pipe away from the oil storage tank penetrates the outer wall of the second connecting pipe and is fixedly connected to the interior of the second connecting pipe, a third connecting pipe is fixedly connected on the outer wall of the end of the hollow cylinder away from the punch, and the outlet end of the third connecting pipe penetrates the side wall of the oil storage tank and is fixedly connected to the interior of the oil storage tank.

[0013] In a further embodiment, the interior of the hollow cylinder is slidably connected to a second slider, a hollow rod is fixed to one side of the second slider, one end of the hollow rod near the punch penetrates the side wall of the hollow cylinder, a connecting plate is fixed to the end of the hollow rod near the punch, the bottom end of the connecting plate is fixedly connected to the top of the cross plate, a feed port is provided on the outer wall of the end of the hollow rod near the second slider, a connecting pipe is fixedly connected to the outer wall of the end of the hollow rod near the punch, and the other end of the connecting pipe is fixedly connected to the chamber.

[0014] In a further embodiment, a plurality of cylinders are fixed to a circular array on the top of the base, the cylinders are slidably connected to the outer wall of the vertical rod, a first slider is slidably connected to the inside of the cylinder, the first slider is slidably connected to the outer wall of the vertical rod, a spring is fixed to the top of the first slider, the top of the spring is fixedly connected to the inner wall of the cylinder, a convex strip is fixed to the outer wall of the vertical rod, an oil inlet pipe is fixedly connected to the top side wall of the cylinder, an oil outlet pipe is fixedly connected to the top side wall of the cylinder, a connecting hole is opened inside the punch, and the discharge end of the oil outlet pipe is slidably inserted into the inside of the connecting hole.

[0015] In a further embodiment, the working method of the spraying mechanism during the stamping process is specifically as follows:

[0016] Step 1: First, place the round steel plate on the top of the punch and use the clamping mechanism to clamp the round steel plate in the center of the lower die;

[0017] Step 2: The spraying mechanism sprays stamping oil onto the top of the circular steel plate;

[0018] Step 3: Control the upper die to move downward to complete the stamping process of the circular steel plate;

[0019] Step 4: The spraying mechanism adds stamping oil to the inside of the gap between the punch and the stainless steel basin.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention arranges electric telescopic rods. Two electric telescopic rods drive the arc plates to move toward each other the same distance, and clamp the circular steel plate at the center of the top of the punch, so that the circular steel plate is evenly stressed during the stamping process. Then, the motor is started. In the process of the motor driving the cross bar to move, the stamping oil in the oil storage tank can be extracted and sprayed on the top of the circular steel plate, which is beneficial to reduce the friction between the circular steel plate and the upper mold during the stamping process, and can also help prevent the stamped workpiece from adhering to the inner wall of the upper mold.

[0022] 2. The present invention arranges the cross bar. In the process that the motor drives the cross bar to move in the direction away from the motor, the cross bar drives the hollow rod to move, thereby squeezing the stamping oil in the front end space in the hollow cylinder into the inside of the cavity, and then spraying it on the upper surface of the circular steel plate through the nozzle. Then the cross bar drives the brush to evenly spread the stamping oil on the circular steel plate, which is beneficial to evenly distribute the friction force generated by the circular steel plate being squeezed by the upper mold during the stamping process on the circular steel plate. After the stamping process is completed and the upper mold is reset, the motor drives the cross bar to move in the direction toward the motor, and the formed and demolded workpiece is pushed onto the conveying platform through the cross bar.

[0023] 3. The present invention provides a circular ring. When the upper mold moves upward and the upper mold and the circular ring are still in contact, the circular ring moves upward, driving the circular plate to move upward, which can push the air inside the cavity into the gap between the formed workpiece and the outer wall of the punch. The formed workpiece and the punch are demoulded and separated by increasing the air pressure. The circular ring moves upward and can also push the first slider to move upward, thereby squeezing the stamping oil inside the cylinder into the gap between the formed workpiece and the outer wall of the punch, further promoting the separation of the formed workpiece and the punch. The stamping oil squeezed from the inside of the cylinder into the gap between the formed workpiece and the outer wall of the punch can be evenly spread on the outer wall of the punch along the gap, which is beneficial to the punch's stamping processing of the next workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall structure of the side surface of the present invention;

[0026] Figure 3 It is a structural cross-sectional view of the base of the present invention;

[0027] Figure 4 For the present invention Figure 3 A magnified view of the structure at center A;

[0028] Figure 5 For the present invention Figure 3 A magnified view of the structure at B in the middle;

[0029] Figure 6 For the present invention Figure 3 A magnified view of the structure at C in the middle;

[0030] Figure 7 It is a structural schematic diagram of the oil storage tank of the present invention;

[0031] Figure 8 For the present invention Figure 7 A magnified view of the structure at D in the middle;

[0032] Fig. 9 For the present invention Figure 7 A magnified view of the structure at E in the middle;

[0033] Fig.10 It is a structural cross-sectional view of the hollow tube of the present invention;

[0034] Fig.11 For the present invention Fig.10 A magnified view of the structure at F in the middle;

[0035] Fig.12 For the present invention Fig.10 A magnified view of the structure at G in the middle;

[0036] Fig.13 The present invention is a flow chart of the working method of the spraying mechanism during the stamping process.

[0037] In the figure: 1, base; 2, lower mold base; 3, first elastic telescopic rod; 4, punch; 5, upper mold; 6, cavity; 7, second elastic telescopic rod; 8, round plate; 9, vertical rod; 10, ring; 11, electric telescopic rod; 12, arc plate; 13, exhaust pipe; 14, exhaust hole; 15, oil storage tank; 16, cylinder; 17, first slider; 18, spring; 19, convex strip; 20, oil inlet pipe; 21, oil outlet pipe; 22, connecting hole; 23, support frame; 24, sliding groove; 25, motor; 26, threaded rod; 27, sliding block; 28, cross bar; 29, brush; 30, nozzle; 31, hollow cylinder; 32, second slider; 33, hollow rod; 34, first connecting pipe; 35, second connecting pipe; 36, third connecting pipe; 37, connecting pipe; 38, L-shaped joint pipe. DETAILED DESCRIPTION

[0038] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0039] like Figures 1 to 12 A split-type forming hardware mold shown in the figure includes a base 1, a lower mold base 2 is fixed on the top of the base 1, a plurality of first elastic telescopic rods 3 are embedded in a circular array on the top of the lower mold base 2, a punch 4 is fixedly connected to the top of the plurality of first elastic telescopic rods 3, a clamping mechanism for clamping a circular steel plate above the punch 4 is arranged on the top of the base 1, an upper mold 5 for stamping the circular steel plate is arranged on the top of the base 1, an oil storage tank 15 for storing stamping oil is arranged on the top of the base 1, and a spraying mechanism is arranged on the top of the base 1, and the spraying mechanism is used to spray the stamping oil in the oil storage tank 15 onto the surface of the circular steel plate.

[0040] It should be noted that stamping oil is a metal processing oil made of sulphurized lard as the main agent, with various additives such as refined oiliness agent and rust inhibitor added. It is an extreme pressure lubricant. It is used in metal stamping processing to form a lubricating film between the workpiece and the mold to reduce friction, reduce energy consumption, improve the finish and precision of the workpiece, and effectively protect the mold and extend its service life. This lubricant usually plays multiple roles in the stamping process, such as lubrication, cooling and cleaning.

[0041] In stamping processing, if stamping oil is not added, the friction coefficient between the die and the workpiece will increase, requiring greater force for demolding, which increases the difficulty of demolding. During the stamping process, the metal material will undergo plastic deformation. Without the lubrication of stamping oil, the heat and stress generated during the deformation process may cause the material surface to become rough, increase the adhesion between the die and the material, and make demolding difficult.

[0042] Specifically, it is inconvenient to place the round steel plate in the exact center of the lower mold by manual operation, which will cause uneven edges of the stainless steel basin formed by the stamping process. At the same time, the mold will generate heat during the continuous stamping process, which makes it inconvenient for the staff to apply stamping oil, which may lead to difficulty in demolding due to lack of stamping oil.

[0043] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows. First, the staff places the circular steel plate to be stamped on the top of the punch 4, and then starts the clamping mechanism to clamp the circular steel plate at the center of the top of the punch 4, which is beneficial to make the force on the circular steel plate uniform during the stamping process, thereby helping to reduce the stress generated during the stamping process and the heat generated by friction.

[0044] Subsequently, the staff starts the spraying mechanism to spray stamping oil on the top surface of the circular steel plate. The sprayed stamping oil can reduce the friction between the circular steel plate and the upper mold 5 during the stamping process, and can also promote the demolding of the formed workpiece and the upper mold 5.

[0045] After the stamping process is completed, the spraying mechanism sprays stamping oil from the inside of the punch 4 to the contact surface between the punch 4 and the formed workpiece, and the stamping oil promotes the demoulding and separation of the formed workpiece and the punch 4. At the same time, the stamping oil can be evenly distributed on the surface of the punch 4 along the contact surface between the punch 4 and the formed workpiece. Coating the surface of the punch 4 with stamping oil is beneficial to the stamping process of the next workpiece.

[0046] In the further implementation process, a cavity 6 is opened inside the base 1, and a plurality of second elastic telescopic rods 7 are embedded in a circular array at the inner bottom of the cavity 6. A circular plate 8 is commonly fixed to the telescopic ends of the plurality of second elastic telescopic rods 7, and a plurality of vertical rods 9 are fixed to the top circular array of the circular plate 8. The top ends of the vertical rods 9 pass through the top of the base 1, and a circular ring 10 is commonly fixedly connected to the top ends of all the vertical rods 9, which is slidably connected to the outer wall of the punch 4.

[0047] In a specific implementation process, an annular protrusion is fixed on the bottom side wall of the upper mold 5 , the outer diameter of the annular protrusion is the same as the outer diameter of the ring 10 , and the inner diameter of the annular protrusion is greater than the inner diameter of the ring 10 .

[0048] Specifically, under the action of the first elastic telescopic rod 3 and the second elastic telescopic rod 7, after the circular steel plate is placed on the top of the punch 4, the top of the ring 10 and the top of the punch 4 are on the same plane, so that the ring 10 can support the circular steel plate. Because the inner diameter of the annular protrusion is larger than the inner diameter of the ring 10, the edge of the stainless steel basin formed during the stamping process is located at the top of the ring 10. After the stamping is completed, the second elastic telescopic rod 7 pushes the ring 10 to move upward to demold the formed stainless steel basin from the punch 4.

[0049] In the further implementation process, the clamping mechanism includes two support rods, which are symmetrically arranged on the top of the base 1. An electric telescopic rod 11 is fixed on the side of the support rod facing the punch 4. An arc plate 12 is fixed to the telescopic end of the electric telescopic rod 11. The two arc plates 12 are symmetrically arranged on the outside of the circular plate 8.

[0050] Specifically, after the staff places the circular steel plate on the top of the punch 4, the two electric telescopic rods 11 are started, and the two electric telescopic rods 11 extend toward the position of the punch 4, driving the two arc plates 12 to move toward the position of the punch 4. The two arc plates 12 are clamped on the opposite sides of the circular steel plate, so that the circular steel plate can be clamped, which is beneficial to prevent the circular steel plate from moving when the spraying mechanism sprays stamping oil on the top of the circular steel plate. The two electric telescopic rods 11 move toward each other by the same distance, so that the circular steel plate can be clamped in the center of the top of the punch 4, thereby interfering and facilitating uniform force on the circular steel plate during the stamping process.

[0051] In the further implementation process, a plurality of exhaust pipes 13 are fixed to the top circular array of the lower mold base 2, the bottom ends of the exhaust pipes 13 pass through the tops of the lower mold base 2 and the base 1, the bottoms of the exhaust pipes 13 are connected to the interior of the cavity 6, a plurality of exhaust holes 14 are opened through the interior of the punch 4, the tops of the exhaust pipes 13 are slidably inserted into the interiors of the exhaust holes 14, and the exhaust holes 14 and the exhaust pipes 13 are arranged one-to-one.

[0052] In the specific implementation process, the circular plate 8 divides the interior of the cavity 6 into two parts, an upper part and an lower part. After the bottom of the upper mold 5 is pressed on the top of the circular steel plate, a sealed space is formed between the circular steel plate, the ring 10 and the punch 4.

[0053] Specifically, in the process of the upper mold 5 moving downward to stamp the circular steel plate, the upper mold 5 pushes the ring 10, the punch 4 and the circular steel plate to move downward, the ring 10 moves downward to push the vertical rod 9 to move downward, and the vertical rod 9 moves downward to push the circular plate 8 to move downward. Inside the cavity 6, after the circular plate 8 moves downward, the space in the upper half of the cavity 6 increases, so that the air in the sealed space can be drawn into the exhaust hole 14, and the gas enters the exhaust pipe 13 along the exhaust hole 14, and finally enters the upper half of the cavity 6.

[0054] By extracting the gas in the sealed space, the air pressure in the sealed space is made lower than the external atmospheric pressure, so that the circular steel plate is pressed downward under the action of the external atmospheric pressure, which is beneficial to increase the stability of the circular steel plate and prevent the circular steel plate from displacement. At the same time, after the gas in the sealed space is discharged, it is beneficial to reduce the occurrence of depression of the inner wall of the workpiece caused by the presence of gas during stamping and forming of the workpiece.

[0055] After the stamping process is completed, the upper mold 5 moves upward and resets, and the circular plate 8 moves upward and resets under the elastic force of the second elastic telescopic rod 7. The upward movement of the circular plate 8 can transport the air in the upper half of the cavity 6 to the exhaust pipe 13, and the air flow enters the exhaust hole 14 from the exhaust pipe 13, and then enters the gap between the molded workpiece and the punch 4 from the exhaust hole 14, thereby further promoting the demoulding of the molded workpiece and the punch 4.

[0056] In a further implementation process, the spraying mechanism includes two support frames 23, which are symmetrically arranged on the top of the base 1 and located on both sides of the oil storage tank 15. The support frame 23 is provided with a sliding groove 24 on the side facing the oil storage tank 15. A motor 25 is fixed on one side wall of the support frame 23. The output shaft of the motor 25 passes through the side wall of the support frame 23. The output shaft of the motor 25 is fixed with a threaded rod 26. The other end of the threaded rod 26 is rotatably connected to the inner wall of the sliding groove 24. A sliding block 27 is threadedly connected to the outer wall of the threaded rod 26, and the sliding block 27 is slidably connected to the sliding groove 24.

[0057] A cross bar 28 is fixed between the two sliding blocks 27, and a chamber is opened inside the cross bar 28. A plurality of nozzles 30 are fixed in a linear array on the side of the cross bar 28 facing the ring 10, and the nozzles 30 are connected to the chamber. A brush 29 is fixed at the bottom of the cross bar 28, and a conveying assembly is provided on the top of the base 1, which is used to convey the stamping oil in the oil storage tank 15 to the inside of the chamber.

[0058] In a specific implementation process, a conveying platform is provided on the top of the base 1, and the conveying platform is used to convey the stamped workpiece to a storage position.

[0059] Specifically, after the circular steel plate is clamped in the center of the punch 4, the motor 25 is started to drive the threaded rod 26 to rotate, and the rotation of the threaded rod 26 drives the sliding block 27 to move inside the sliding groove 24. The two sliding blocks 27 jointly drive the cross bar 28 to move. At this time, the conveying component conveys the stamping oil in the oil storage tank 15 to the chamber inside the cross bar 28. In the process of the motor 25 driving the cross bar 28 to move, the stamping oil in the chamber is sprayed onto the upper surface of the circular steel plate through the nozzle 30.

[0060] After the nozzle 30 sprays the stamping oil, the cross bar 28 drives the brush 29 to evenly spread the stamping oil sprayed on the surface of the circular steel plate, which helps to prevent the occurrence of large friction between the circular steel plate and the upper mold 5 due to uneven application of the stamping oil on the upper surface of the circular steel plate.

[0061] After the motor 25 drives the cross bar 28 to move to one end away from the motor 25, the motor 25 is paused and the upper mold 5 is started to stamp the circular steel plate. After the stamping process is completed, the two motors 25 reverse and synchronously drive the cross bar 28 to reset. During the resetting and movement of the cross bar 28, the side wall of the cross bar 28 contacts the formed stainless steel basin workpiece, and the formed workpiece can be pushed onto the conveying platform.

[0062] In the further implementation process, the conveying assembly includes two hollow cylinders 31, and the two hollow cylinders 31 are symmetrically arranged on the top of the base 1 through supporting columns. A second connecting pipe 35 is fixedly connected on the outer wall of the end of the hollow cylinder 31 away from the punch 4, and the other end of the second connecting pipe 35 is fixedly connected to the interior of the end of the hollow cylinder 31 close to the punch 4. A first connecting pipe 34 is symmetrically fixedly connected on the side wall of the oil storage tank 15, and the end of the first connecting pipe 34 away from the oil storage tank 15 passes through the outer wall of the second connecting pipe 35 and is fixedly connected to the interior of the second connecting pipe 35. A third connecting pipe 36 is fixedly connected on the outer wall of the end of the hollow cylinder 31 away from the punch 4, and the outlet end of the third connecting pipe 36 passes through the side wall of the oil storage tank 15 and is fixedly connected to the interior of the oil storage tank 15.

[0063] The hollow cylinder 31 is slidably connected to the inside of the hollow cylinder 31, and a hollow rod 33 is fixed to one side of the second slider 32. The end of the hollow rod 33 close to the punch 4 passes through the side wall of the hollow cylinder 31, and a connecting plate is fixed to the end of the hollow rod 33 close to the punch 4. The bottom end of the connecting plate is fixedly connected to the top of the cross bar 28. A feed port is provided on the outer wall of the end of the hollow rod 33 close to the second slider 32, and a connecting pipe 37 is fixedly connected to the outer wall of the end of the hollow rod 33 close to the punch 4, and the other end of the connecting pipe 37 is fixedly connected to the chamber.

[0064] In the specific implementation process, the two connecting ports of the second connecting pipe 35 are both fixed with a first one-way valve, so that the stamping oil can only enter the interior of the hollow cylinder 31 from the interior of the second connecting pipe 35, and the feed port on the hollow rod 33 is provided with a second one-way valve, so that the stamping oil can only enter the interior of the hollow cylinder 31 from the interior of the hollow rod 33, and the third connecting pipe 36 is provided with a third one-way valve, so that the stamping oil can only enter the interior of the oil storage tank 15 through the third connecting pipe 36, and one end of the third connecting pipe 36 and the adjacent first connecting pipe 34 located inside the oil storage tank 15 are fixedly connected with an L-shaped joint pipe 38.

[0065] Specifically, when the motor 25 drives the cross bar 28 to move, the cross bar 28 drives the connecting plate to move, the connecting plate drives the hollow rod 33 to move, and the hollow rod 33 drives the second slider 32 to move inside the hollow cylinder 31 .

[0066] The second slider 32 divides the interior of the hollow cylinder 31 into two spaces, the space close to the motor 25 is the front end space, and the space away from the motor 25 is the end space. When the second slider 32 moves in the direction of the hollow cylinder 31 toward the cross bar 28, the stamping oil in the oil storage tank 15 enters the interior of the second connecting tube 35 along the first connecting tube 34, and then enters the end space of the hollow cylinder 31 from the second connecting tube 35. The stamping oil in the front end space of the hollow cylinder 31 enters the interior of the hollow rod 33, and then enters the chamber inside the cross bar 28 from the hollow rod 33 along the connecting tube 37, so as to lubricate the top of the circular steel plate.

[0067] During the movement of the second slider 32 in the direction away from the cross bar 28 inside the hollow cylinder 31, the stamping oil in the oil storage tank 15 enters the interior of the second connecting tube 35 along the first connecting tube 34, and then enters the front end space of the hollow cylinder 31 from the second connecting tube 35. The stamping oil in the end space of the hollow cylinder 31 enters the interior of the third connecting tube 36, and then returns to the interior of the oil storage tank 15 from the third connecting tube 36. Through the L-shaped joint tube 38, the stamping oil inside the oil storage tank 15 is extracted from the first connecting tube 34, and then returns to the interior of the oil storage tank 15 from the third connecting tube 36, so that the stamping oil inside the oil storage tank 15 flows in a ring shape, which is beneficial to increase the fluidity of the stamping oil, so that the stamping oil is always in good performance, which is beneficial to improve the lubrication effect of the stamping oil.

[0068] In the further implementation process, a plurality of cylinders 16 are fixed to the top circumferential array of the base 1, and the cylinder 16 is slidably connected to the outer wall of the vertical rod 9, and a first slider 17 is slidably connected to the inside of the cylinder 16, and the first slider 17 is slidably connected to the outer wall of the vertical rod 9, and a spring 18 is fixed to the top of the first slider 17, and the top of the spring 18 is fixedly connected to the inner wall of the cylinder 16, and a convex strip 19 is fixed to the outer wall of the vertical rod 9, and an oil inlet pipe 20 is fixedly connected to the top side wall of the cylinder 16, and an oil outlet pipe 21 is fixedly connected to the top side wall of the cylinder 16, and a connecting hole 22 is opened inside the punch 4, and the discharge end of the oil outlet pipe 21 is slidably inserted into the inside of the connecting hole 22.

[0069] Specifically, in the process of the upper mold 5 moving downward, first, the upper mold 5 pushes the ring 10 and the punch 4 to move downward synchronously. After the punch 4 moves downward until the punch 4 contacts the lower mold seat 2, the punch 4 stops moving downward, and the ring 10 continues to move downward. After the stamping is completed, in the process of the upper mold 5 moving upward, the ring 10 and the punch 4 move upward for a distance synchronously. After the punch 4 moves to the initial position, the punch 4 stops moving, and the ring 10 continues to move upward to the initial position first.

[0070] During the downward movement of the circular ring 10, the circular ring 10 drives the vertical rod 9 to move downward, and the vertical rod 9 drives the convex strip 19 to move downward to release the limit on the spring 18. The spring 18 pushes the first slider 17 to move downward, and the stamping oil in the oil storage tank 15 enters the interior of the cylinder 16 along the oil inlet pipe 20. The interior of the oil inlet pipe 20 is provided with a one-way valve for preventing the stamping oil inside the cylinder 16 from entering the oil storage tank 15 from the oil inlet pipe 20.

[0071] During the upward movement of the ring 10, the convex strip 19 pushes the first slider 17 to move upward, and the stamping oil inside the cylinder 16 enters into the connecting hole 22 along the oil outlet pipe 21. A one-way valve is provided inside the oil outlet pipe 21 to prevent the stamping oil inside the oil outlet pipe 21 from flowing back into the cylinder 16, and then enters into the gap between the formed stainless steel basin workpiece and the punch 4 from the inside of the connecting pipe 37, which is beneficial for demolding and separating the formed workpiece from the punch 4. At the same time, the outer surface of the punch 4 can also be lubricated for subsequent continuous processing.

[0072] like Fig.13 The forming process of a split-type hardware mold shown in the figure, the working method of the spraying mechanism during the stamping process is specifically as follows:

[0073] Step 1: First, place the circular steel plate on the top of the punch 4 and use the clamping mechanism to clamp the circular steel plate in the center of the lower die;

[0074] Step 2: The spraying mechanism sprays stamping oil onto the top of the circular steel plate;

[0075] Step 3: Control the upper die 5 to move downward to complete the stamping process of the circular steel plate;

[0076] Step 4: The spraying mechanism adds stamping oil into the gap between the punch 4 and the stainless steel basin.

[0077] Specifically, the staff places the circular steel plate to be stamped on the top of the punch 4, then starts the electric telescopic rod 11 to drive the arc plate 12 to clamp the circular steel plate in the center of the punch 4, and then starts the motor 25 to drive the cross bar 28 to move. During the movement of the cross bar 28, the stamping oil in the oil storage tank 15 is extracted and sprayed on the top of the circular steel plate, and then the upper mold 5 is controlled to descend for stamping. When the stamping process is completed and the upper mold 5 moves upward, the stamping oil in the oil storage tank 15 is sucked into the gap between the punch 4 and the formed workpiece, which promotes the demolding of the workpiece and lubricates the surface of the punch 4.

[0078] Working principle of the present invention:

[0079] When the present invention is in use, first, the staff places the circular steel plate to be stamped on the top of the punch 4, and then starts the two electric telescopic rods 11 to drive the arc plate 12 to move toward each other the same distance, clamping the circular steel plate at the center of the top of the punch 4, so that the circular steel plate is evenly stressed during the stamping process, and then starts the motor 25. In the process of the motor 25 driving the cross bar 28 to move, the stamping oil in the oil storage tank 15 can be extracted and sprayed on the top of the circular steel plate, which is beneficial to reduce the friction between the circular steel plate and the upper mold 5 during the stamping process, and can also help prevent the stamped workpiece from adhering to the inner wall of the upper mold 5.

[0080] Through the provided cross bar 28, when the motor 25 drives the cross bar 28 to move in the direction away from the motor 25, the cross bar 28 drives the hollow rod 33 to move, so as to squeeze the stamping oil in the front end space in the hollow cylinder 31 into the interior of the chamber, and then spray it on the upper surface of the circular steel plate through the nozzle 30. Then the cross bar 28 drives the brush 29 to spread the stamping oil on the circular steel plate evenly, which is beneficial to evenly distribute the friction force generated by the circular steel plate being squeezed by the upper mold 5 during the stamping process on the circular steel plate. After the stamping process is completed and the upper mold 5 is reset, the motor 25 drives the cross bar 28 to move in the direction of the motor 25, and the formed and demolded workpiece is pushed onto the conveying platform through the cross bar 28.

[0081] In the process of the cross bar 28 driving the hollow rod 33 to move back and forth, the stamping oil in the oil storage tank 15 can be sucked into the end space of the hollow cylinder 31, and then sent back to the interior of the oil storage tank 15 from the third connecting pipe 36, so that the stamping oil inside the oil storage tank 15 circulates, which is beneficial to prevent the stamping oil from being statically stratified and can also promote the heat dissipation of the stamping oil to the stamping die.

[0082] In the process that the upper mold 5 is squeezed on the upper surface of the circular steel plate and pushes the punch 4 to move downward, the upper mold 5 pushes the ring 10 down, and the downward movement of the ring 10 drives the circular plate 8 to move downward, so that the air between the punch 4 and the circular steel plate can be drawn into the interior of the cavity 6, so that a negative pressure is formed between the punch 4, the circular steel plate and the ring 10, thereby increasing the clamping force on the circular steel plate, further promoting the stability of the circular steel plate, and preventing the circular steel plate from being offset due to the separation of the circular steel plate and the arc plate 12. At the same time, it can also reduce the influence of gas during stamping processing and prevent the formation of pores on the inner wall of the formed workpiece. The first elastic telescopic rod 3 can also play a role in vibration reduction and buffering.

[0083] Through the provided ring 10, when the upper mold 5 moves upward and the upper mold 5 and the ring 10 are still in contact, the ring 10 moves upward to drive the circular plate 8 to move upward, which can push the air inside the cavity 6 into the gap between the formed workpiece and the outer wall of the punch 4, and promote the demoulding and separation of the formed workpiece and the punch 4 by increasing the air pressure. The upward movement of the ring 10 can also push the first slider 17 to move upward, thereby squeezing the stamping oil inside the cylinder 16 into the gap between the formed workpiece and the outer wall of the punch 4, further promoting the separation of the formed workpiece and the punch 4, and the stamping oil squeezed from the inside of the cylinder 16 to the gap between the formed workpiece and the outer wall of the punch 4 can be evenly spread on the outer wall of the punch 4 along the gap, which is beneficial to the punch 4 for stamping the next workpiece.

[0084] 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 to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A split-type forming hardware mold, comprising a base (1), characterized in that: A lower die seat (2) is fixed on the top of the base (1); a plurality of first elastic telescopic rods (3) are embedded in a circular array on the top of the lower die seat (2); a punch (4) is fixedly connected to the tops of the plurality of first elastic telescopic rods (3); a clamping mechanism for clamping a circular steel plate above the punch (4) is provided on the top of the base (1); an upper die (5) for performing stamping processing on the circular steel plate is provided on the top of the base (1); an oil storage tank (15) for storing stamping oil is provided on the top of the base (1); and a spraying mechanism is provided on the top of the base (1); the spraying mechanism is used to spray the stamping oil in the oil storage tank (15) onto the surface of the circular steel plate; The spraying mechanism comprises two support frames (23), the two support frames (23) are symmetrically arranged on the top of the base (1) and located on both sides of the oil storage tank (15), a sliding groove (24) is opened on the side of the support frame (23) facing the oil storage tank (15), a motor (25) is fixed on one side wall of the support frame (23), the output shaft of the motor (25) passes through the side wall of the support frame (23), a threaded rod (26) is fixed on the output shaft of the motor (25), the other end of the threaded rod (26) is rotatably connected to the inner wall of the sliding groove (24), a sliding block (27) is threadedly connected to the outer wall of the threaded rod (26), and the sliding block (27) is slidably connected to the sliding groove (24); A cross bar (28) is fixed between the two sliding blocks (27), a chamber is provided inside the cross bar (28), a plurality of nozzles (30) are fixed in a linear array on one side of the cross bar (28) facing the ring (10), the nozzles (30) are connected to the chamber, a brush (29) is fixed at the bottom of the cross bar (28), and a conveying assembly is provided at the top of the base (1), the conveying assembly is used to convey the stamping oil in the oil storage tank (15) to the inside of the chamber; The conveying assembly comprises two hollow cylinders (31), the two hollow cylinders (31) being symmetrically arranged on the top of the base (1) via a support column, a second connecting pipe (35) being fixedly connected to the outer wall of one end of the hollow cylinder (31) away from the punch (4), the other end of the second connecting pipe (35) being fixedly connected to the interior of one end of the hollow cylinder (31) close to the punch (4), a first connecting pipe (34) being symmetrically fixedly connected to the side wall of the oil storage tank (15), the end of the first connecting pipe (34) away from the oil storage tank (15) penetrating the outer wall of the second connecting pipe (35) and being fixedly connected to the interior of the second connecting pipe (35), a third connecting pipe (36) being fixedly connected to the outer wall of one end of the hollow cylinder (31) away from the punch (4), the outlet end of the third connecting pipe (36) penetrating the side wall of the oil storage tank (15) and being fixedly connected to the interior of the oil storage tank (15); The hollow cylinder (31) is slidably connected to a second slider (32) inside, a hollow rod (33) is fixed to one side of the second slider (32), one end of the hollow rod (33) close to the punch (4) penetrates the side wall of the hollow cylinder (31), one end of the hollow rod (33) close to the punch (4) is fixed to a connecting plate, the bottom end of the connecting plate is fixedly connected to the top of the cross bar (28), a feed port is provided on the outer wall of the end of the hollow rod (33) close to the second slider (32), a connecting pipe (37) is fixedly connected to the outer wall of the end of the hollow rod (33) close to the punch (4), and the other end of the connecting pipe (37) is fixedly connected to the chamber; The base (1) has a cavity (6) formed inside, a plurality of second elastic telescopic rods (7) are embedded in a circular array at the bottom of the cavity (6), a circular plate (8) is fixed to the telescopic ends of the plurality of second elastic telescopic rods (7), a plurality of vertical rods (9) are fixed to the top of the circular plate (8), the top ends of the vertical rods (9) pass through the top of the base (1), a circular ring (10) is fixed to the top ends of all the vertical rods (9), and the circular ring (10) is slidably connected to the outer wall of the punch (4); A plurality of cylinders (16) are fixed in a circular array on the top of the base (1), the cylinders (16) are slidably connected to the outer wall of the vertical rod (9), a first slider (17) is slidably connected inside the cylinder (16), the first slider (17) is slidably connected to the outer wall of the vertical rod (9), a spring (18) is fixed on the top of the first slider (17), the top of the spring (18) is fixedly connected to the inner wall of the cylinder (16), a convex strip (19) is fixed on the outer wall of the vertical rod (9), an oil inlet pipe (20) is fixedly connected to the top side wall of the cylinder (16), an oil outlet pipe (21) is fixedly connected to the top side wall of the cylinder (16), a connecting hole (22) is opened inside the punch (4), and the discharge end of the oil outlet pipe (21) is slidably inserted into the inside of the connecting hole (22); During the downward movement of the circular ring (10), the circular ring (10) drives the vertical rod (9) to move downward, and the vertical rod (9) drives the convex strip (19) to move downward to release the limit of the spring (18). The spring (18) pushes the first slider (17) to move downward, and the stamping oil in the oil storage tank (15) enters the interior of the cylinder (16) along the oil inlet pipe (20). The forming process of the hardware mold for split forming, the working method of the spraying mechanism during the stamping process is specifically as follows: Step 1: firstly, place the circular steel plate on the top of the punch (4) and use the clamping mechanism to clamp the circular steel plate at the center of the lower die seat (2); Step 2: The spraying mechanism sprays stamping oil onto the top of the circular steel plate; Step 3: Control the upper die (5) to move downward to complete the stamping process of the circular steel plate; Step 4: The spraying mechanism adds stamping oil to the inside of the gap between the punch (4) and the formed stainless steel basin.

2. A split-type forming hardware mold according to claim 1, characterized in that: The clamping mechanism comprises two support rods, the two support rods are symmetrically arranged on the top of the base (1), an electric telescopic rod (11) is fixed to the side of the support rod facing the punch (4), an arc plate (12) is fixed to the telescopic end of the electric telescopic rod (11), and the two arc plates (12) are symmetrically arranged on the outside of the circular plate (8).

3. A split-type forming hardware mold according to claim 2, characterized in that: A plurality of exhaust pipes (13) are fixed in a circular array on the top of the lower mold base (2); the bottom ends of the exhaust pipes (13) penetrate the tops of the lower mold base (2) and the base (1); the bottoms of the exhaust pipes (13) are connected to the interior of the cavity (6); a plurality of exhaust holes (14) are formed through the interior of the punch (4); the tops of the exhaust pipes (13) are slidably inserted into the interiors of the exhaust holes (14); and the exhaust holes (14) and the exhaust pipes (13) are arranged in a one-to-one correspondence.

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