A stamping and forming device for a fire-fighting butterfly valve assembly

Abstract

The present invention relates to the technical field of fire fighting butterfly valve production, specifically to a stamping and forming device for a fire fighting butterfly valve assembly, including a fuselage. A lower support plate is fixedly installed on the upper end surface of the fuselage. Four corner positions of the upper end surface of the lower support plate are fixedly installed with limit sliding columns. The upper ends of the limit sliding columns are jointly fixedly installed with an upper support plate. A driving mechanism for providing power to a stamping tooth disc is arranged on the upper support plate. An integrated operation model of positioning, flat pressing, and stamping is adopted to complete the three-stage stamping and forming operation of the handle tooth disc of the fire fighting butterfly valve. During the stamping and forming operations in the three stages, fitting support, expansion positioning and fitting with the bearing plate, and locking of the rectangular limit frame are respectively provided, which can evenly disperse the stamping force, prevent excessive deformation of the material, improve the flatness and overall shape of the tooth disc, ensure that the tooth disc maintains the correct position during stamping, and further enhance the locking stability, improve the structural integrity and fatigue resistance of the tooth disc, and finally ensure that the stamping quality of each tooth disc meets the predetermined standard.

Description

Technical Field

[0001] The present invention relates to the technical field of fire butterfly valve production, and specifically to a stamping forming device for a fire butterfly valve assembly. Background Art

[0002] A fire butterfly valve is a commonly used fire-fighting equipment, widely used in fire water supply systems, fire hydrant systems, etc. In case of a fire, it is necessary to manually operate the fire butterfly valve through the handle of the fire butterfly valve to control the water flow, so as to achieve the purpose of extinguishing the fire or cutting off the water source. The handle of the fire butterfly valve consists of a handle body, a toothed disc (see Figure 9 ), and connecting parts, etc. Among them, the toothed disc is a key component for locking the handle of the fire butterfly valve, mainly used for fixing the position of the handle at multiple angles. Since the ear seat of the toothed disc needs to bear a certain load and stress during use, in order to ensure that it will not deform or break during long-term use to ensure the stability of the valve, therefore, in order to mass-produce the toothed disc and improve the durability of the ear seat of the toothed disc, it is necessary to perform precise stamping forming operations on the toothed disc to ensure that the ear seat obtains good mechanical properties and precise shape, so as to ensure the correct assembly and smooth transmission between the handle and the valve stem, and meet the requirements of the fire butterfly valve for its reliability and durability.

[0003] Currently, there are the following disadvantages when stamping and forming the toothed disc of the fire butterfly valve handle: 1. When performing stamping and forming operations on the toothed disc, it is necessary to first place the toothed disc to be stamped on the corresponding lower die, and position the through hole of the toothed disc through the positioning rod. Subsequently, start the hydraulic cylinder to cooperate with the upper die and the lower die to complete the stamping and forming operation of the toothed disc. However, during the above operation process, the toothed disc is only positioned through the positioning rod, and there is no tight fit between the positioning rod and the through hole of the toothed disc, resulting in slight displacement or rotation of the toothed disc during stamping, thereby affecting the dimensional accuracy and tooth profile quality of the final product; 2. When performing stamping and forming operations on the toothed disc, the part of the toothed disc to be stamped is not supported. Therefore, the part to be stamped will bear excessive pressure during stamping, causing excessive deformation of this part of the material, thereby changing the shape and size of the toothed disc, affecting the fitting accuracy between the toothed disc and the locking device. And in the case of no support, the punching force will cause stress concentration at the connection between the toothed disc and the part to be stamped, resulting in local cracking or tearing of the toothed disc, thereby affecting the integrity and strength of the toothed disc. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a stamping and forming device for a fire fighting butterfly valve assembly, which is achieved by the following specific technical means: A stamping and forming device for a fire fighting butterfly valve assembly includes a fuselage, on the upper end face of which a lower support plate is fixedly installed. At the four corners of the upper end face of the lower support plate, limit sliding columns are fixedly installed. The upper ends of the limit sliding columns are jointly fixedly installed with an upper support plate. On the upper support plate, a driving mechanism for providing power to a stamping tooth disc is provided. On the driving mechanism, an upper die mechanism and a lower die mechanism that cooperate with the upper die mechanism to perform stamping operations are provided.

[0005] The upper die mechanism includes a main body part arranged on the driving mechanism. On the main body part, a positioning part for docking with the lower die mechanism is provided. On the main body part, a connecting part and a supporting part that cooperate with the connecting part to provide a fitting support for the upper end face of the part to be stamped of the tooth disc according to the main body part are also provided.

[0006] The lower die mechanism includes a guiding part arranged on the driving mechanism and cooperating with the main body part to provide guidance for the stamping tooth disc and protect the tooth teeth of the tooth disc. On the guiding part, a bearing part for loading the tooth disc is provided. On the bearing part, a flat pressing part for cooperating with the main body part to fit the tooth disc and the bearing part and an expanding part for expanding and positioning the through holes of the tooth disc are provided. On the driving mechanism, a rectangular limit frame located inside the guiding part and cooperating with the positioning part is provided.

[0007] The driving mechanism, the upper die mechanism and the lower die mechanism cooperate to perform a three-stage stamping operation on the tooth disc, and the rectangular limit frame limits the positioning part in a rectangular manner to further maintain the locking of the expanding part on the tooth disc.

[0008] As a preferred technical solution of the present invention, the driving mechanism includes a hydraulic cylinder fixedly installed on the upper end face of the upper support plate. On the limit sliding columns at the four corners, a support plate located between the lower support plate and the upper support plate is slidably installed in common. The upper end face of the support plate is fixedly connected with the telescopic end of the hydraulic cylinder. At the center of the upper end face of the lower support plate, a lower die base is fixedly installed. At the lower end face of the support plate, an upper die base corresponding to the lower die base is fixedly installed.

[0009] As a preferred technical solution of the present invention, the main body part includes an upper die fixedly installed at the center of the lower end face of the upper die base. At the center of the lower end face of the upper die, a first circular groove is opened. At the axial center of the first circular groove, a positioning cylinder is fixedly installed.

[0010] As a preferred technical solution of the present invention, the positioning part includes four positioning rods fixedly installed on the lower end face of the upper die along its circumferential direction. The positioning rods are composed of an upper cylinder, a middle platform cylinder and a lower cylinder. The lower ends of the positioning rods are rounded off.

[0011] As a preferred technical solution of the present invention, the connecting portion includes first sliding grooves symmetrically opened in the front and rear of the lower end face of the upper mold. The first sliding grooves penetrate through the outer ring wall of the upper mold and the inner ring wall of the first circular groove. A first slider is slidably installed in the first sliding grooves through a spring provided therein. One end of the first slider close to the alignment cylinder is fixedly installed with a connecting rod, and the other end of the connecting rod away from the corresponding first slider is fixedly installed with a pressing arc block.

[0012] As a preferred technical solution of the present invention, the supporting portion includes a support rod hinged to the side wall of the first slider away from the alignment cylinder through a torsion spring provided. One end of the support rod away from the corresponding first slider is hinged with a fitting plate through a torsion spring provided. A plurality of suction cups are evenly distributed in an array on the lower end face of the fitting plate.

[0013] As a preferred technical solution of the present invention, the guiding portion includes a lower mold fixedly installed on the upper end face of the lower mold base and corresponding to the upper mold. A stamping groove corresponding to the first sliding groove is opened on the inner ring wall of the lower mold. A maintaining groove for protecting the teeth of the tooth disc is opened on the inner ring wall of the lower mold and located between the front and rear two stamping grooves. A rectangular limiting frame located inside the lower mold is fixedly installed on the upper end face of the lower mold base. Insertion holes for mating with the lower ends of the alignment rods are opened at the four corners of the rectangular limiting frame. A cross-shaped support frame is fixedly installed inside the rectangular limiting frame.

[0014] As a preferred technical solution of the present invention, the bearing portion includes a bearing plate arranged inside the lower mold. The bearing plate, the upper mold and the lower mold are coaxial. A plurality of sliding rods evenly distributed along its circumference are fixedly installed on the lower end face of the bearing plate. Sliding holes corresponding to the sliding rods one by one and slidably connected to them are opened on the upper end face of the lower mold base. A spring sleeved on the sliding rods is fixedly installed between the bearing plate and the lower mold base.

[0015] As a preferred technical solution of the present invention, the flat pressing portion includes a second circular groove opened at the center of the upper end face of the bearing plate. A sliding column for mating with the alignment cylinder is fixedly installed on the upper end face inside the second circular groove. A sliding sleeve is slidably installed on the outer ring wall of the sliding column. A spring sleeved on the sliding column is fixedly installed between the sliding sleeve and the second circular groove. A plurality of second sliding grooves extending radially along its circumference are evenly opened on the upper end face inside the second circular groove. A second slider is slidably installed in the second sliding grooves. One end of the second slider close to the sliding column is hinged with a hinged rod, and the upper end of the hinged rod is hinged with the sliding sleeve through a pin shaft provided. An L-shaped pressing block is fixedly installed at the upper end of the second slider. The side wall of the horizontal section of the L-shaped pressing block away from the sliding column is an inclined surface.

[0016] As a preferred technical solution of the present invention, the expansion part includes third circular grooves opened on the upper end surface of the bearing plate and corresponding to the alignment rods one by one. A fitting hole penetrating through the lower end surface of the bearing plate is opened at the center of the inner part of the third circular groove. A plurality of third sliding grooves penetrating through the inner ring wall of the fitting hole are uniformly opened along the circumferential direction on the upper end surface of the inner part of the third circular groove. Third sliders are slidably installed in the third sliding grooves through springs arranged therein. One ends of the third sliders in the same third circular groove close to each other are fixedly installed with extrusion rods, and extrusion bumps are fixedly installed on the upper ends of the third sliders.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. For this stamping and forming device of a fire butterfly valve assembly, through the mutual cooperation of the driving mechanism, the upper die mechanism and the lower die mechanism, an integrated operation model of positioning, flat pressing and stamping is adopted to complete the three-stage stamping and forming operation of the handle tooth disc of the fire butterfly valve. In the stamping and forming operations of the three stages, fitting support, expansion positioning and fitting with the bearing plate, and locking of the rectangular limiting frame are respectively provided, which can evenly disperse the stamping force, prevent the material from being excessively deformed, improve the flatness and overall shape of the tooth disc, enhance the positioning stability, ensure that the tooth disc maintains the correct position during the stamping process, improve the overall quality of the tooth disc, and further enhance the locking stability, maintain the consistency of the stamping process, improve the structural integrity and fatigue resistance of the tooth disc, and finally ensure that the stamping quality of each tooth disc meets the predetermined standards.

[0018] 2. For this stamping and forming device of a fire butterfly valve assembly, through the mutual cooperation of the driving mechanism and the upper die mechanism, when the upper die descends, fitting support is provided for the upper end surface of the part to be stamped of the tooth disc, so as to complete the stamping and forming operation of the first stage. Among them, the fitting support can evenly disperse the stamping force and provide continuous and stable supporting force for the part to be stamped, thereby preventing the material from being excessively deformed, maintaining the flatness and overall shape of the tooth disc, and ensuring that the final product meets the dimensional and shape tolerance requirements.

[0019] 3. For this stamping and forming device of a fire butterfly valve assembly, through the mutual cooperation of the upper die mechanism and the lower die mechanism, during the process of the upper die fitting the tooth disc with the bearing plate, the positioning and fixing of the tooth disc are completed through the expansion positioning of the through hole, and at the same time, the tooth disc is further fitted on the bearing plate, so as to complete the stamping and forming operation of the second stage, thereby enhancing the positioning stability of the tooth disc during the stamping process, ensuring that the tooth disc maintains the correct position during the stamping process, and the full fitting of the bottom surface of the tooth disc with the bearing plate can provide better support for the tooth disc, reduce deformation or warping during the stamping process, and improve the overall quality of the tooth disc.

[0020] 4. The stamping and forming device for the fire butterfly valve assembly enables the upper die and the lower die to cooperate to complete the stamping operation on the toothed disc through the provided lower die mechanism, thereby completing the stamping and forming operation in the third stage. Among them, the rectangular limiting frame further maintains the locking of the toothed disc in a rectangular limiting manner through the alignment rod, further enhancing the stability of the locking, maintaining the consistency of the stamping process, ensuring that the stamping quality of each toothed disc meets the predetermined standards, and at the same time, the stamping force can be evenly distributed, improving the structural integrity and fatigue resistance of the toothed disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a three-dimensional structural schematic diagram of the present invention during operation.

[0022] Figure 2 FIG. is a partial three-dimensional structural schematic diagram of the driving mechanism of the present invention.

[0023] Figure 3 FIG. is a three-dimensional structural schematic diagram of the upper die mechanism of the present invention.

[0024] Figure 4 FIG. is a three-dimensional structural schematic diagram of the guiding part of the present invention.

[0025] Figure 5 FIG. is a partial three-dimensional structural schematic diagram of the lower die mechanism of the present invention.

[0026] Figure 6 is Figure 5 an enlarged structural schematic diagram of part A in

[0027] Figure 7 FIG. is a sectional three-dimensional structural schematic diagram of the upper die mechanism and the lower die mechanism of the present invention during operation.

[0028] Figure 8 FIG. is a partial sectional three-dimensional structural schematic diagram of the upper die mechanism and the lower die mechanism of the present invention.

[0029] Figure 9 FIG. is a three-dimensional change diagram of the flat toothed disc formed into a toothed disc with two-sided protrusions through stamping.

[0030] In the figure: 1, fuselage; 2, lower support plate; 3, upper support plate; 4, drive mechanism; 411, support plate; 412, hydraulic cylinder; 413, lower die base; 414, upper die base; 5, upper die mechanism; 51, main body part; 511, upper die; 512, first circular groove; 513, alignment cylinder; 52, alignment part; 521, alignment rod; 53, connecting part; 531, first slideway; 532, first slider; 533, connecting rod; 54, support part; 541, support rod; 542, fitting plate; 6, lower die mechanism; 61, guiding part; 611, lower die; 612, stamping groove; 613, maintaining groove; 62, bearing part; 621, bearing plate; 622, slide bar; 623, slide hole; 63, flat pressing part; 631, second circular groove; 632, slide column; 633, slide sleeve; 634, second slideway; 635, second slider; 64, expanding part; 641, third circular groove; 642, mating hole; 643, third slider; 644, extrusion rod; 7, rectangular limiting frame. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figure 1 and Figure 2 , a stamping and forming device for a fire butterfly valve assembly, including a fuselage 1. A lower support plate 2 is fixedly installed on the upper end surface of the fuselage 1. Limiting slide columns are fixedly installed at the four corners of the upper end surface of the lower support plate 2. An upper support plate 3 is fixedly installed on the upper ends of the limiting slide columns together. A drive mechanism 4 for providing power for the stamping gear disc is arranged on the upper support plate 3. An upper die mechanism 5 and a lower die mechanism 6 that cooperate with the upper die mechanism 5 to perform stamping operations are arranged on the drive mechanism 4.

[0033] Please refer to Figure 2 and Figure 3 , the upper die mechanism 5 includes a main body part 51 arranged on the drive mechanism 4. An alignment part 52 for docking with the lower die mechanism 6 is arranged on the main body part 51. A connecting part 53 and a support part 54 that cooperate with the connecting part 53 to provide a fitting support for the upper end surface of the part to be stamped of the gear disc according to the main body part 51 are also arranged on the main body part 51.

[0034] Please refer to Figure 1 , Figure 2 and Figure 4, the lower die mechanism 6 includes a guiding part 61 which is arranged on the driving mechanism 4 and cooperates with the main body part 51 to provide guidance for the stamping gear disc and protect the teeth of the gear disc. A bearing part 62 for loading the gear disc is arranged on the guiding part 61. A flat pressing part 63 for cooperating with the main body part 51 to fit the gear disc with the bearing part 62 and an expanding part 64 for expanding and positioning the through holes of the gear disc are arranged on the bearing part 62. A rectangular limiting frame 7 which is located inside the guiding part 61 and cooperates with the alignment part 52 is arranged on the driving mechanism 4.

[0035] The driving mechanism 4, the upper die mechanism 5 and the lower die mechanism 6 cooperate to perform a three-stage stamping operation on the gear disc, and the rectangular limiting frame 7 limits the alignment part 52 in a rectangular manner, further maintaining the locking of the expanding part 64 to the gear disc.

[0036] Please refer to Figure 1 and Figure 2 , the driving mechanism 4 includes a hydraulic cylinder 412 fixedly installed on the upper end face of the upper support plate 3. A support plate 411 which is located between the lower support plate 2 and the upper support plate 3 is slidably installed together on the limiting sliding columns at the four corners. The upper end face of the support plate 411 is fixedly connected with the telescopic end of the hydraulic cylinder 412. A lower die base 413 is fixedly installed at the center of the upper end face of the lower support plate 2. An upper die base 414 corresponding to the lower die base 413 is fixedly installed on the lower end face of the support plate 411.

[0037] Please refer to Figure 3 , Figure 7 and Figure 8 , the main body part 51 includes an upper die 511 fixedly installed at the center of the lower end face of the upper die base 414. A first circular groove 512 is opened at the center of the lower end face of the upper die 511. An alignment cylinder 513 is fixedly installed at the axis center inside the first circular groove 512.

[0038] Please refer to Figure 3 and Figure 7 , the alignment part 52 includes four alignment rods 521 which are uniformly fixedly installed on the lower end face of the upper die 511 along its circumferential direction. The alignment rod 521 is composed of an upper cylinder, a middle table column and a lower cylinder. The lower end of the alignment rod 521 is processed with a chamfered corner.

[0039] Please refer to Figure 3 and Figure 8 , the connecting part 53 includes first sliding grooves 531 which are symmetrically opened on the front and rear of the lower end face of the upper die 511. The first sliding grooves 531 penetrate through the outer ring wall of the upper die 511 and the inner ring wall of the first circular groove 512. A first slider 532 is slidably installed in the first sliding grooves 531 through a spring. One end of the first slider 532 close to the alignment cylinder 513 is fixedly installed with a connecting rod 533. The other end of the connecting rod 533 far from the corresponding first slider 532 is fixedly installed with an extrusion arc block.

[0040] Please refer to Figure 3 andFigure 8 The supporting part 54 includes a rod 541 hinged to the side wall of the first slider 532 away from the alignment cylinder 513 through a torsion spring provided, and one end of the rod 541 away from the corresponding first slider 532 is hinged with a fitting plate 542 through a torsion spring provided. A plurality of suction cups are evenly distributed on the lower end surface of the fitting plate 542 in an array manner.

[0041] Please refer to Figure 2 、 Figure 4 、 Figure 7 and Figure 8 The guiding part 61 includes a lower die 611 fixedly installed on the upper end surface of the lower die base 413 and corresponding to the upper die 511. A stamping groove 612 corresponding to the first slideway 531 is formed on the inner ring wall of the lower die 611. A maintenance groove 613 for protecting the teeth of the gear disk is formed on the inner ring wall of the lower die 611 and located between the front and rear two stamping grooves 612. A rectangular limiting frame 7 is fixedly installed on the upper end surface of the lower die base 413 and located inside the lower die 611. Insertion holes for mating with the lower ends of the alignment rods 521 are formed at the four corners of the rectangular limiting frame 7. A cross-shaped support frame is fixedly installed inside the rectangular limiting frame 7.

[0042] Please refer to Figure 2 、 Figure 4 、 Figure 5 and Figure 8 The bearing part 62 includes a bearing plate 621 arranged inside the lower die 611. The bearing plate 621, the upper die 511 and the lower die 611 are coaxial. A plurality of sliding rods 622 are fixedly installed on the lower end surface of the bearing plate 621 and evenly distributed along its circumference. Slide holes 623 corresponding to the sliding rods 622 one by one and slidably connected to them are formed on the upper end surface of the lower die base 413. A spring sleeved on the sliding rods 622 is fixedly installed between the bearing plate 621 and the lower die base 413.

[0043] During specific operation, when stamping the gear disk is required, first place the gear disk to be stamped on the upper end surface of the bearing plate 621 and make the through hole of the gear disk be at the expansion part 64. Then start the hydraulic cylinder 412 to make its telescopic end drive the upper die base 414 to descend through the support plate 411, and the upper die base 414 will drive the upper die 511 to approach the lower die 611.

[0044] When the upper die 511 drives the fitting plate 542 to contact the upper end surface of the part of the gear disk to be stamped through the first slider 532, the suction cups on the fitting plate 542 will adsorb it at the position of the gear disk to be stamped. Therefore, the fitting plate 542 will give a downward supporting force to the upper end surface of the part of the gear disk to be stamped, thereby completing the first-stage stamping and forming operation of the gear disk.

[0045] Subsequently, the upper die 511 continues to move downward to fit the toothed disc against the upper end surface of the bearing plate 621. During this process, the spring between the bearing plate 621 and the lower die base 413 provides a supporting force for the bearing plate 621, so that the upper die 511 will not push the bearing plate 621 downward when it has not contacted the toothed disc. And during this process, the upper die mechanism 5 and the lower die mechanism 6 cooperate to calibrate the position of the toothed disc, thereby completing the stamping and forming operation in the second stage.

[0046] When the upper die 511 contacts the toothed disc, the continuous downward movement of the upper die 511 will push the bearing plate 621 downward, thereby compressing the spring between the bearing plate 621 and the lower die base 413. The cooperation between the sliding holes 623 and the sliding rods 622 ensures that the bearing plate 621 drives the toothed disc to descend always in a horizontal state. During the downward movement of the upper die 511, the upper die 511, the bearing plate 621 and the lower die 611 cooperate to deform the part of the toothed disc to be stamped along the guidance of the stamping groove 612. At this time, the alignment rod 521 will insert into the jack of the rectangular limiting frame 7, and the rectangular limiting frame 7 and the cross-shaped support frame cooperate to limit the alignment rod 521 in a rectangular manner to further maintain the locking of the expansion part 64 to the toothed disc, thereby further enhancing the stability of the locking and evenly distributing the punching force at the same time.

[0047] When the upper die 511 and the bearing plate 621 drive the toothed disc to move to the lowermost end of the lower die 611, the stamping and forming operation in the third stage is completed. And during this process, the teeth of the toothed disc are always in the maintaining groove 613, thus ensuring the integrity of the teeth of the toothed disc.

[0048] During the deformation of the part of the toothed disc to be stamped, the fitting plate 542 will give it a reverse supporting force through the spring on the first slider 532 following the change of the angle of the stamping part. At the same time, the fitting plate 542 will push the first slider 532 towards the alignment cylinder 513 through the support rod 541. And after the stamping is completed, at this time the angle of the stamping part is in the vertical state, and at this time the first slider 532 will drive the extrusion arc block to press against the outer ring wall of the alignment cylinder 513 through the connecting rod 533, so as to provide a fitting support for the upper end surface of the part of the toothed disc to be stamped when the upper die 511 descends, to evenly disperse the punching force and provide continuous and stable supporting force for the part to be stamped, thereby preventing the material from deforming excessively and maintaining the flatness and overall shape of the toothed disc.

[0049] Subsequently, the hydraulic cylinder 412 can be reversely started to drive the upper die 511 to reset, and the bearing plate 621 will reset under the action of the spring below it, thus completing the stamping operation on the toothed disc.

[0050] Please refer to Figure 2 、 Figure 5 and Figure 7, the flat pressing part 63 includes a second circular groove 631 opened at the center of the upper end surface of the bearing plate 621. A sliding column 632 that is fitted and inserted with the alignment cylinder 513 is fixedly installed on the upper end surface inside the second circular groove 631. A sliding sleeve 633 is slidably installed on the outer circumferential wall of the sliding column 632. A spring sleeved on the sliding column 632 is fixedly installed between the sliding sleeve 633 and the second circular groove 631. A plurality of second sliding grooves 634 extending radially along its circumference are evenly opened on the upper end surface inside the second circular groove 631. A second sliding block 635 is slidably installed in the second sliding groove 634. One end of the second sliding block 635 close to the sliding column 632 is hinged with a hinge rod. The upper end of the hinge rod is hinged with the sliding sleeve 633 through a pin shaft provided. An L-shaped pressing block is fixedly installed at the upper end of the second sliding block 635. The side wall of the horizontal section of the L-shaped pressing block away from the sliding column 632 is an inclined surface.

[0051] During specific operation, when the upper die 511 continues to move downward to fit the toothed disc on the upper end surface of the bearing plate 621, the alignment cylinder 513 will push the sliding sleeve 633 downward, and at the same time, push the surrounding second sliding blocks 635 to the side away from the sliding column 632 through the hinge rod, so that the surrounding L-shaped pressing blocks expand synchronously in all directions. And when the inclined surface of the L-shaped pressing block contacts the inner circumferential wall of the central through hole of the toothed disc, the toothed disc will be extruded onto the bearing plate 621, so that the toothed disc is further fitted on the bearing plate 621, so that the bottom surface of the toothed disc is fully fitted with the bearing plate 621, which can provide better support for the toothed disc, reduce deformation or warping during the stamping process, and improve the overall quality of the toothed disc.

[0052] Please refer to Figure 2 , Figure 5 , Figure 6 and Figure 7 , the expansion part 64 includes third circular grooves 641 opened on the upper end surface of the bearing plate 621 and corresponding to the alignment rods 521 one by one. A matching hole 642 penetrating the lower end surface of the bearing plate 621 is opened at the center of the third circular groove 641. A plurality of third sliding grooves penetrating the inner circumferential wall of the matching hole 642 are evenly opened on the upper end surface inside the third circular groove 641 along its circumference. Third sliding blocks 643 are slidably installed in the third sliding grooves through springs provided. One ends of the third sliding blocks 643 in the same third circular groove 641 close to each other are fixedly installed with extrusion rods 644. An extrusion convex block is fixedly installed at the upper end of the third sliding block 643.

[0053] During specific operation, when the upper die 511 continues to move downward to fit the tooth disc against the upper end surface of the bearing plate 621, the alignment rod 521 will be inserted into the fitting hole 642. During the insertion process, the outer ring wall of the alignment rod 521 will synchronously squeeze the extrusion rod 644 in all directions, thereby synchronously pushing the third sliders 643 around to the side away from the alignment rod 521. At this time, the expanded third sliders 643 will drive the extrusion bumps to expand and position the through holes of the tooth disc, thereby completing the positioning and fixing of the tooth disc, enhancing the stability of the tooth disc positioning during the stamping process, and ensuring that the tooth disc maintains the correct position during the stamping process.

[0054] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stamping and forming device for a fire butterfly valve assembly, comprising a body, characterized in that: A lower support plate is fixedly installed on the upper end surface of the fuselage, and limited sliding columns are fixedly installed at the four corners of the upper end surface of the lower support plate. The upper ends of the limited sliding columns are jointly fixedly installed with an upper support plate. A driving mechanism for providing power to the stamping gear disc is arranged on the upper support plate, and an upper die mechanism and a lower die mechanism that cooperates with the upper die mechanism to perform stamping operations are arranged on the driving mechanism; The upper die mechanism comprises a main body arranged on the driving mechanism, the main body is provided with a positioning part docking with the lower die mechanism, the main body is also provided with a connecting part and a supporting part cooperating with the connecting part to provide a fitting support for the upper end surface of the to-be-punched part of the toothed disc according to the main body; The lower die mechanism comprises a guide part arranged on the driving mechanism and cooperating with the main body to provide guidance for the stamping toothed disc and protect the teeth of the toothed disc, a bearing part for loading the toothed disc is arranged on the guiding part, a flat pressing part for cooperating with the main body to fit the toothed disc with the bearing part and an expansion part for expanding and positioning the through hole of the toothed disc is arranged on the bearing part, and a rectangular limiting frame located in the guiding part and cooperating with the alignment part is arranged on the driving mechanism; The driving mechanism, the upper die mechanism and the lower die mechanism cooperate to perform a three-stage stamping operation on the toothed disc, and the rectangular limit frame further keeps the expansion part locked on the toothed disc by limiting the alignment part in a rectangular manner; The driving mechanism includes a support plate located between a lower support plate and an upper support plate, which is slidably mounted on the limit sliding posts at the four corners; a lower die seat is fixedly mounted at the center of the upper end surface of the lower support plate; and an upper die seat corresponding to the lower die seat is fixedly mounted on the lower end surface of the support plate; The main body comprises an upper die fixedly mounted at the center of the lower end surface of the upper die seat, a first circular groove is provided at the center of the lower end surface of the upper die, and a positioning cylinder is fixedly mounted at the inner axis of the first circular groove; The connecting part includes a first slideway symmetrically opened in front and back of the lower end face of the upper mold, the first slideway passes through the outer ring wall of the upper mold and the inner ring wall of the first circular groove, a first slider is slidably installed in the first slideway through a spring, a connecting rod is fixedly installed at one end of the first slider close to the alignment cylinder, and an extrusion arc block is fixedly installed at one end of the connecting rod away from the corresponding first slider; The support part includes a support rod hinged to a side wall of the first slider away from the alignment tube through a set torsion spring, and one end of the support rod away from the corresponding first slider is hinged to a bonding plate through a set torsion spring, and a plurality of suction cups are evenly distributed on the lower end surface of the bonding plate in an array.

2. A fire butterfly valve assembly stamping and forming device according to claim 1, characterized in that: The driving mechanism comprises a hydraulic cylinder fixedly mounted on the upper end surface of the upper support plate, and the upper end surface of the support plate is fixedly connected to the telescopic end of the hydraulic cylinder.

3. A stamping and forming device for a fire butterfly valve assembly according to claim 1, characterized in that: The alignment part includes four alignment rods evenly fixedly installed on the lower end surface of the upper mold along its circumference. The alignment rods are composed of an upper cylinder, a middle column and a lower cylinder. The lower ends of the alignment rods are chamfered.

4. A stamping and forming device for a fire butterfly valve assembly according to claim 3, characterized in that: The guide part includes a lower mold fixedly mounted on the upper end surface of the lower mold base and corresponding to the upper mold, a stamping groove corresponding to the first slideway is opened on the inner ring wall of the lower mold, a maintaining groove located between the front and rear stamping grooves and used to protect the teeth of the gear plate is opened on the inner ring wall of the lower mold, a rectangular limit frame located in the lower mold is fixedly mounted on the upper end surface of the lower mold base, sockets that cooperate with the lower end of the alignment rod are opened at the four corners of the rectangular limit frame, and a cross-shaped support frame is fixedly mounted in the rectangular limit frame.

5. A stamping and forming device for a fire butterfly valve assembly according to claim 4, characterized in that: The bearing part includes a bearing plate arranged in the lower mold, the bearing plate, the upper mold and the lower mold are coaxial, a plurality of sliding rods evenly distributed along its circumference are fixedly installed on the lower end surface of the bearing plate, a sliding hole corresponding to the sliding rods and slidably connected to the sliding rods is opened on the upper end surface of the lower mold base, and a spring mounted on the sliding rods is fixedly installed between the bearing plate and the lower mold base.

6. A stamping and forming device for a fire butterfly valve assembly according to claim 5, characterized in that: The flat pressing part includes a second circular groove opened at the center of the upper end surface of the bearing plate, a sliding column which is plugged into and cooperates with the positioning cylinder is fixedly installed on the upper end surface of the second circular groove, a sliding sleeve is slidably installed on the outer ring wall of the sliding column, a spring sleeved on the sliding column is fixedly installed between the sliding sleeve and the second circular groove, a plurality of second slideways extending radially along the circumference of the upper end surface of the second circular groove are evenly opened, a second sliding block is slidably installed in the second slideway, an articulated rod is hinged at one end of the second sliding block close to the sliding column, the upper end of the articulated rod is hinged to the sliding sleeve through a set pin shaft, an L-shaped pressure block is fixedly installed on the upper end of the second sliding block, and a side wall of a horizontal section of the L-shaped pressure block away from the sliding column is an inclined surface.

7. A stamping and forming device for a fire butterfly valve assembly according to claim 5, characterized in that: The expansion portion includes a third circular groove opened on the upper end surface of the bearing plate and corresponding to the alignment rod one by one, a matching hole penetrating the lower end surface of the bearing plate is opened at the center of the third circular groove, a plurality of third slideways penetrating the inner ring wall of the matching hole are evenly opened along the circumference of the upper end surface of the third circular groove, a third slider is slidably installed in the third slideway through a spring, an extrusion rod is fixedly installed at the ends of the third sliders in the same third circular groove that are close to each other, and an extrusion protrusion is fixedly installed on the upper end of the third slider.

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