Punch forming device for fire-fighting butterfly valve assembly

Abstract

The invention relates to the technical field of fire-fighting butterfly valve production, in particular to a fire-fighting butterfly valve assembly punch forming device which comprises a machine body, a lower supporting plate is fixedly installed on the upper end face of the machine body, limiting sliding columns are fixedly installed at the four corners of the upper end face of the lower supporting plate, and an upper supporting plate is jointly and fixedly installed at the upper ends of the limiting sliding columns. A driving mechanism used for providing power for the stamping fluted disc is arranged on the upper supporting plate. A positioning, flat pressing and stamping integrated operation model is adopted to complete three-stage punch forming operation of the fire-fighting butterfly valve handle fluted disc, in the three stages of punch forming operation, fitting supporting, expansion positioning, bearing plate fitting and rectangular limiting frame locking are provided correspondingly, the stamping force can be evenly dispersed, excessive deformation of materials is prevented, and the service life of the fire-fighting butterfly valve handle fluted disc is prolonged. The flatness and the overall shape of the fluted disc are improved, it is ensured that the fluted disc is kept at the correct position in the stamping process, the locking stability is further enhanced, the structural integrity and the anti-fatigue performance of the fluted disc are improved, and finally it is ensured that the stamping quality of each fluted disc meets the preset standard.

Description

Technical Field

[0001] The invention relates to the technical field of fire butterfly valve production, in particular to a fire butterfly valve component stamping and forming device. Background Art

[0002] Fire butterfly valve is a commonly used fire fighting equipment, widely used in fire water supply system, fire hydrant system, etc. When a fire occurs, it is necessary to manually operate the fire butterfly valve through the fire butterfly valve handle to control the water flow to achieve the purpose of extinguishing the fire or cutting off the water source. The fire butterfly valve handle consists of the handle body, the toothed disc (see Fig. 9 ) and connectors, among which the toothed disc is the key component for locking the handle of the fire butterfly valve, and is mainly used to fix the handle position at multiple angles. The ear seat of the toothed disc needs to withstand certain loads and stresses during use. In order to ensure that it will not deform or break during long-term use to ensure the stability of the valve, in order to mass-produce the toothed disc and improve the durability of the toothed disc ear seat, it is necessary to perform precise stamping operations on the toothed disc to ensure that the ear seat has good mechanical properties and precise shape, thereby ensuring the correct assembly and smooth transmission of the handle and the valve stem, and meeting the reliability and durability requirements of the fire butterfly valve.

[0003] At present, there are the following disadvantages when stamping the toothed disc of the fire butterfly valve handle: 1. When stamping the toothed disc, it is necessary to first place the toothed disc to be stamped on the corresponding lower mold, and position the through hole of the toothed disc through the positioning rod, and then start the hydraulic cylinder to cooperate with the upper mold and the lower mold to complete the stamping operation of the toothed disc. During the above operation, the positioning of the toothed disc is only completed by the positioning rod, and the positioning rod and the through hole of the toothed disc cannot be tightly matched, which causes the toothed disc to have a slight displacement or rotation during the stamping process, thereby affecting the dimensional accuracy and tooth shape quality of the final product; 2. When the toothed disc is stamped, the part to be stamped of the toothed disc is not supported. Therefore, during the stamping process, the part to be stamped will be subjected to excessive pressure, causing excessive deformation of this part of the material, thereby changing the shape and size of the toothed disc, affecting the matching accuracy of the toothed disc and the locking device, and in the absence of support, the stamping force will cause stress concentration at the connection between the toothed disc and the part to be stamped, thereby causing local rupture or tearing of the toothed disc, thereby affecting the integrity and strength of the toothed disc. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a stamping and forming device for a fire butterfly valve assembly, which is achieved by the following specific technical means: a stamping and forming device for a fire butterfly valve assembly, comprising a fuselage, a lower support plate is fixedly installed on the upper end surface of the fuselage, limiting sliding columns are fixedly installed at the four corners of the upper end surface of the lower support plate, an upper support plate is fixedly installed on the upper ends of the limiting sliding columns, a driving mechanism for providing power to the stamping gear disc is arranged on the upper support plate, an upper mold mechanism and a lower mold mechanism cooperating with the upper mold mechanism to perform a stamping operation are arranged on the driving mechanism.

[0005] The upper mold mechanism includes a main body arranged on the driving mechanism, the main body is provided with a positioning part connected with the lower mold mechanism, the main body is also provided with a connecting part and a supporting part that cooperates with the connecting part to provide a fitting support for the upper end surface of the part to be stamped of the gear disk according to the main body.

[0006] The lower mold mechanism includes a guide portion arranged on the driving mechanism and cooperating with the main body to provide guidance for the stamping gear disc and protect the teeth of the gear disc, the guide portion is provided with a bearing portion for loading the gear disc, the bearing portion is provided with a flat pressing portion for cooperating with the main body to fit the gear disc and the bearing portion, and an expansion portion for expanding and positioning the through hole of the gear disc, and the driving mechanism is provided with a rectangular limit frame located in the guide portion and cooperating with the alignment portion.

[0007] 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 limits the alignment portion in a rectangular manner, thereby further maintaining the locking of the expansion portion on the toothed disc.

[0008] As a preferred technical solution of the present invention, the driving mechanism includes a hydraulic cylinder fixedly installed on the upper end surface of the upper support plate, and a support plate located between the lower support plate and the upper support plate is slidably installed on the limiting sliding columns at the four corners. The upper end surface of the support plate is fixedly connected to the telescopic end of the hydraulic cylinder, a lower die seat is fixedly installed 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 installed on the lower end surface of the support plate.

[0009] As a preferred technical solution of the present invention, the main body includes an upper mold fixedly installed at the center of the lower end surface of the upper mold base, a first circular groove is opened at the center of the lower end surface of the upper mold, and a positioning cylinder is fixedly installed at the internal axis of the first circular groove.

[0010] As a preferred technical solution of the present invention, 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, and the lower ends of the alignment rods are chamfered.

[0011] As a preferred technical solution of the present invention, 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, and a first slider is slidably installed in the first slideway through a set spring, a connecting rod is fixedly installed on one end of the first slider close to the alignment cylinder, and an extrusion arc block is fixedly installed on the end of the connecting rod away from the corresponding first slider.

[0012] As a preferred technical solution of the present invention, the support part includes a support rod hinged to the side wall of the first slider away from the alignment tube through a torsion spring, and the end of the support rod away from the corresponding first slider is hinged to a bonding plate through a torsion spring, and a plurality of suction cups are evenly distributed on the lower end surface of the bonding plate in an array.

[0013] As a preferred technical solution of the present invention, the guide part includes a lower mold fixedly installed 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, and 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 installed on the upper end surface of the lower mold base, and 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 installed in the rectangular limit frame.

[0014] As a preferred technical solution of the present invention, 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.

[0015] As a preferred technical solution of the present invention, 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 that is plugged into and cooperates with the alignment 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 are evenly opened on the upper end surface of the second circular groove along its circumference, a second slider is slidably installed in the second slideway, an articulated rod is hinged at one end of the second slider 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 slider, and a side wall of the horizontal section of the L-shaped pressure block away from the sliding column is an inclined surface.

[0016] As a preferred technical solution of the present invention, the expansion portion includes a third circular groove opened on the upper end surface of the supporting plate and corresponding one-to-one to the alignment rod, a matching hole penetrating the lower end surface of the supporting plate is opened at the center of the third circular groove, a plurality of third slideways penetrating the inner annular 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, the ends of the third sliders in the same third circular groove that are close to each other are fixedly installed with extrusion rods, and an extrusion protrusion is fixedly installed on the upper end of the third slider.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The stamping and forming device of the fire butterfly valve assembly, through the coordinated use of the set driving mechanism, the upper mold mechanism and the lower mold mechanism, adopts an integrated operation model of positioning, flat pressing and stamping to complete the three-stage stamping and forming operation of the toothed disc of the fire butterfly valve handle. In the three stages of the stamping and forming operation, it provides fitting support, expansion positioning and bearing plate fitting, and rectangular limit frame locking, which can evenly disperse the stamping force, prevent excessive deformation of the material, improve the flatness and overall shape of the toothed disc, enhance the positioning stability, ensure that the toothed disc maintains the correct position during the stamping process, improve the overall quality of the toothed disc, and further enhance the locking stability, maintain the consistency of the stamping process, improve the structural integrity and fatigue resistance of the toothed disc, and ultimately ensure that the stamping quality of each toothed disc meets the predetermined standards.

[0018] 2. The stamping and forming device of the fire butterfly valve assembly, through the cooperation of the set driving mechanism and the upper mold mechanism, provides a fitting support for the upper end surface of the part to be stamped of the toothed disc when the upper mold descends, so as to complete the first stage of the stamping and forming operation, wherein the fitting support can evenly disperse the stamping force and provide continuous and stable support force for the part to be stamped, thereby preventing excessive deformation of the material, maintaining the flatness and overall shape of the toothed disc, and ensuring that the final product meets the size and shape tolerance requirements.

[0019] 3. The stamping and forming device of the fire butterfly valve assembly cooperates with the upper die mechanism and the lower die mechanism. When the upper die fits the toothed disc to the carrier plate, the toothed disc is positioned and fixed by expanding the through hole, and the toothed disc is further fitted to the carrier plate, thereby completing the second stage of the stamping and forming operation, thereby enhancing the positioning stability of the toothed disc during the stamping process, ensuring that the toothed disc maintains the correct position during the stamping process, and the bottom surface of the toothed disc fully fits the carrier plate to provide better support for the toothed disc, reduce deformation or warping during the stamping process, and improve the overall quality of the toothed disc.

[0020] 4. The stamping and forming device of the fire butterfly valve assembly, through the lower die mechanism set up, enables the upper die and the lower die to cooperate with the toothed disc to complete the stamping operation, thereby completing the third stage of the stamping and forming operation, wherein the rectangular limit frame further maintains the locking of the toothed disc by the rectangular limit method of the alignment rod, further enhances the locking stability, maintains the consistency of the stamping process, ensures that the stamping quality of each toothed disc meets the predetermined standards, and can evenly distribute the stamping force, thereby improving the structural integrity and fatigue resistance of the toothed disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention when it is working.

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

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

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide part of the present invention.

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

[0026] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0027] Figure 7 It is a schematic cross-sectional three-dimensional structure diagram of the upper mold mechanism and the lower mold mechanism of the present invention when they are working.

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

[0029] Fig. 9 The three-dimensional diagram of the flat toothed disc formed by stamping into protruding toothed discs on both sides.

[0030] In the figure: 1, fuselage; 2, lower support plate; 3, upper support plate; 4, driving mechanism; 411, support plate; 412, hydraulic cylinder; 413, lower die seat; 414, upper die seat; 5, upper die mechanism; 51, main body; 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, supporting part; 541, support rod; 542, fitting Plate; 6, lower mold mechanism; 61, guide part; 611, lower mold; 612, stamping groove; 613, maintaining groove; 62, bearing part; 621, bearing plate; 622, sliding rod; 623, sliding hole; 63, flat pressing part; 631, second circular groove; 632, sliding column; 633, sliding sleeve; 634, second slideway; 635, second slider; 64, expansion part; 641, third circular groove; 642, matching hole; 643, third slider; 644, extrusion rod; 7, rectangular limit frame. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 and Figure 2 A fire butterfly valve assembly stamping forming device comprises a body 1, a lower support plate 2 is fixedly mounted on the upper end surface of the body 1, limiting sliding columns are fixedly mounted at the four corners of the upper end surface of the lower support plate 2, an upper support plate 3 is fixedly mounted on the upper ends of the limiting sliding columns, and a driving mechanism 4 for providing power to a stamping gear disc is arranged on the upper support plate 3, an upper die mechanism 5 and a lower die mechanism 6 cooperating with the upper die mechanism 5 to perform a stamping operation are arranged on the driving mechanism 4.

[0033] See also Figure 2 and Figure 3 The upper mold mechanism 5 includes a main body 51 arranged on the driving mechanism 4, and a positioning part 52 is arranged on the main body 51 for docking with the lower mold mechanism 6. The main body 51 is also provided with a connecting part 53 and a supporting part 54 that cooperates with the connecting part 53 and provides a fitting support for the upper end surface of the part to be stamped of the gear disk according to the main body 51.

[0034] See also Figure 1 , Figure 2 and Figure 4The lower die mechanism 6 includes a guide portion 61 which is arranged on the driving mechanism 4 and cooperates with the main body 51 to provide guidance for the stamping gear disc and protect the teeth of the gear disc. The guide portion 61 is provided with a bearing portion 62 for loading the gear disc. The bearing portion 62 is provided with a flat pressing portion 63 which cooperates with the main body 51 to fit the gear disc and the bearing portion 62, and an expansion portion 64 which performs expansion and positioning on the through hole of the gear disc. The driving mechanism 4 is provided with a rectangular limit frame 7 which is located in the guide portion 61 and cooperates with the alignment portion 52.

[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 toothed disc, and the rectangular limiting frame 7 further keeps the expansion portion 64 locked on the toothed disc by limiting the alignment portion 52 in a rectangular manner.

[0036] See also Figure 1 and Figure 2 The driving mechanism 4 includes a hydraulic cylinder 412 fixedly mounted on the upper end surface of the upper support plate 3, and a support plate 411 located between the lower support plate 2 and the upper support plate 3 is slidably mounted on the limiting sliding columns at the four corners. The upper end surface of the support plate 411 is fixedly connected to the telescopic end of the hydraulic cylinder 412, a lower die seat 413 is fixedly mounted at the center of the upper end surface of the lower support plate 2, and an upper die seat 414 corresponding to the lower die seat 413 is fixedly mounted on the lower end surface of the support plate 411.

[0037] See also Figure 3 , Figure 7 and Figure 8 The main body 51 includes an upper mold 511 fixedly mounted at the center of the lower end surface of the upper mold base 414. A first circular groove 512 is opened at the center of the lower end surface of the upper mold 511. A positioning cylinder 513 is fixedly mounted at the inner axis of the first circular groove 512.

[0038] See also Figure 3 and Figure 7 The alignment part 52 includes four alignment rods 521 evenly fixedly installed on the lower end surface of the upper mold 511 along its circumference. The alignment rods 521 are composed of an upper cylinder, a middle column and a lower cylinder. The lower ends of the alignment rods 521 are chamfered.

[0039] See also Figure 3 and Figure 8 The connecting part 53 includes a first slide 531 symmetrically opened in front and back of the lower end face of the upper mold 511. The first slide 531 penetrates the outer ring wall of the upper mold 511 and the inner ring wall of the first circular groove 512. A first slider 532 is slidably installed in the first slide 531 through a set spring. A connecting rod 533 is fixedly installed on one end of the first slider 532 close to the positioning tube 513, and an extrusion arc block is fixedly installed on the end of the connecting rod 533 away from the corresponding first slider 532.

[0040] See also Figure 3 and Figure 8 The support portion 54 includes a support rod 541 hinged to a side wall of the first slider 532 away from the alignment tube 513 through a set torsion spring. The end of the support rod 541 away from the corresponding first slider 532 is hinged to a bonding plate 542 through a set torsion spring. The lower end surface of the bonding plate 542 has a plurality of suction cups evenly distributed in an array.

[0041] See also Figure 2 , Figure 4 , Figure 7 and Figure 8 The guide portion 61 includes a lower mold 611 fixedly mounted on the upper end surface of the lower mold base 413 and corresponding to the upper mold 511, a stamping groove 612 corresponding to the first slideway 531 is provided on the inner ring wall of the lower mold 611, a maintaining groove 613 located between the front and rear stamping grooves 612 and used to protect the teeth of the gear plate is provided on the inner ring wall of the lower mold 611, a rectangular limit frame 7 located in the lower mold 611 is fixedly mounted on the upper end surface of the lower mold base 413, and sockets that cooperate with the lower end of the alignment rod 521 are provided at the four corners of the rectangular limit frame 7, and a cross-shaped support frame is fixedly mounted in the rectangular limit frame 7.

[0042] See also Figure 2 , Figure 4 , Figure 5 and Figure 8 The bearing part 62 includes a bearing plate 621 arranged in the lower mold 611. The bearing plate 621, the upper mold 511 and the lower mold 611 are coaxial. A plurality of sliding rods 622 evenly distributed along its circumference are fixedly installed on the lower end surface of the bearing plate 621. A sliding hole 623 corresponding to the sliding rod 622 and slidably connected to the sliding rod 622 is opened on the upper end surface of the lower mold base 413. A spring mounted on the sliding rod 622 is fixedly installed between the bearing plate 621 and the lower mold base 413.

[0043] During specific work, when it is necessary to stamp the toothed disc, first place the toothed disc to be stamped on the upper end surface of the supporting plate 621, and make the toothed disc through hole at the expansion portion 64, then start the hydraulic cylinder 412 so that its telescopic end passes through the support plate 411 and brings the upper die seat 414 down, and the upper die seat 414 will bring the upper die 511 closer to the lower die 611.

[0044] When the upper mold 511 contacts the upper end surface of the part to be punched of the gear disc with the bonding plate 542 through the first slider 532, the suction cup on the bonding plate 542 will adsorb it to the position of the gear disc to be punched, so that the bonding plate 542 will give downward support force to the upper end surface of the part to be punched of the gear disc, thereby completing the first stage of stamping and forming operation of the gear disc.

[0045] Then, the upper mold 511 continues to move downward to fit the toothed disk into the upper end surface of the carrier plate 621. During this process, the spring between the carrier plate 621 and the lower mold base 413 provides support force for the carrier plate 621, so that the upper mold 511 will not push the carrier plate 621 downward when it does not contact the toothed disk. During this process, the upper mold mechanism 5 and the lower mold mechanism 6 cooperate to calibrate the position of the toothed disk, thereby completing the second stage of the stamping operation.

[0046] When the upper mold 511 contacts the toothed disk, the upper mold 511 continues to descend and pushes the supporting plate 621 downward, thereby compressing the spring between the supporting plate 621 and the lower mold base 413, and the slide hole 623 cooperates with the slide rod 622 to ensure that the supporting plate 621 and the toothed disk are always in a horizontal state when descending. In the process of the upper mold 511 descending, the upper mold 511, the supporting plate 621 and the lower mold 611 cooperate to deform the part of the toothed disk to be stamped along the guidance of the stamping groove 612. At this time, the alignment rod 521 will be inserted into the socket of the rectangular limit frame 7. The rectangular limit frame 7 cooperates with the cross-shaped support frame to further maintain the locking of the expansion part 64 on the toothed disk by limiting the alignment rod 521 in a rectangular manner, thereby further enhancing the locking stability and evenly distributing the stamping force.

[0047] When the upper mold 511 and the carrier plate 621 move the gear disc to the lowermost end of the lower mold 611, the third stage of stamping operation is completed. During this process, the gear disc teeth are always in the maintaining groove 613, thereby ensuring the integrity of the gear disc teeth.

[0048] During the deformation of the part to be punched of the toothed disc, the fitting plate 542 will follow the change of the angle of the punched part and provide it with a reverse supporting force through the spring on the first slider 532. At the same time, the fitting plate 542 will push the first slider 532 toward the alignment cylinder 513 through the support rod 541. After the punching is completed, the angle of the punched part is in a vertical state. At this time, the first slider 532 will press against the outer ring wall of the alignment cylinder 513 with the extrusion arc block through the connecting rod 533, so as to provide fitting support for the upper end face of the part to be punched of the toothed disc when the upper mold 511 descends, so as to evenly disperse the punching force and provide continuous and stable supporting force for the part to be punched, thereby preventing the material from excessive deformation and maintaining the flatness and overall shape of the toothed disc.

[0049] Then, the hydraulic cylinder 412 can be started in reverse to reset the upper mold 511, and the supporting plate 621 will be reset under the action of the spring below it, thereby completing the stamping operation of the gear disc.

[0050] See also Figure 2 , Figure 5 and Figure 7The flat pressing portion 63 includes a second circular groove 631 provided at the center of the upper end surface of the bearing plate 621, a sliding column 632 which is plugged into the alignment cylinder 513 is fixedly installed on the upper end surface of the second circular groove 631, a sliding sleeve 633 is slidably installed on the outer ring 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 slideways 634 extending radially are evenly provided on the upper end surface of the second circular groove 631 along its circumference, a second slider 635 is slidably installed in the second slideway 634, an end of the second slider 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 set pin shaft, an L-shaped pressure block is fixedly installed on the upper end of the second slider 635, and a side wall of the horizontal section of the L-shaped pressure block away from the sliding column 632 is an inclined surface.

[0051] During specific operation, as the upper mold 511 continues to move downward to fit the toothed disc to the upper end surface of the carrier plate 621, the alignment cylinder 513 will push the sleeve 633 downward, and simultaneously push the surrounding second sliders 635 to the side away from the slide column 632 through the hinged rod, so that the surrounding L-shaped pressure blocks will expand synchronously, and the inclined surface of the L-shaped pressure block will squeeze the toothed disc onto the carrier plate 621 when contacting the inner ring wall of the central through hole of the toothed disc, so that the toothed disc is further fitted to the carrier plate 621, so that the bottom surface of the toothed disc is fully fitted with the carrier 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] See also Figure 2 , Figure 5 , Figure 6 and Figure 7 The expansion portion 64 includes a third circular groove 641 which is provided on the upper end surface of the carrier plate 621 and corresponds to the alignment rod 521 one by one. A matching hole 642 which penetrates the lower end surface of the carrier plate 621 is provided at the center of the third circular groove 641. A plurality of third slideways which penetrate the inner ring wall of the matching hole 642 are evenly provided on the upper end surface of the third circular groove 641 along its circumference. A third slider 643 is slidably installed in the third slideway through a spring. An extrusion rod 644 is fixedly installed at one end of the third slider 643 in the same third circular groove 641 which is close to each other, and an extrusion protrusion is fixedly installed on the upper end of the third slider 643.

[0053] During specific operation, as the upper mold 511 continues to move downward to fit the toothed disc into the upper end surface of the carrier plate 621, the alignment rod 521 will be inserted into the matching hole 642, and during the insertion process, the outer ring wall of the alignment rod 521 will synchronously squeeze the extrusion rod 644 to the surroundings, thereby synchronously pushing the third sliders 643 on the surroundings to the side away from the alignment rod 521. At this time, the diffused third slider 643 will expand and position the through hole of the toothed disc with the extrusion protrusion, thereby completing the positioning and fixation of the toothed disc, thereby enhancing the stability of the positioning of the toothed disc during the stamping process and ensuring that the toothed disc maintains the correct position during the stamping process.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire butterfly valve assembly stamping and forming device, comprising a body (1), characterized in that: The upper end surface of the machine body (1) is fixedly mounted with a lower support plate (2), the four corners of the upper end surface of the lower support plate (2) are fixedly mounted with limit slides, the upper ends of the limit slides are jointly fixedly mounted with an upper support plate (3), the upper support plate (3) is provided with a driving mechanism (4) for providing power to the stamping toothed disc, the driving mechanism (4) is provided with an upper die mechanism (5) and a lower die mechanism (6) for cooperating with the upper die mechanism (5) to perform a stamping operation; The upper die mechanism (5) comprises a main body (51) arranged on the driving mechanism (4); the main body (51) is provided with a positioning portion (52) docking with the lower die mechanism (6); the main body (51) is also provided with a connecting portion (53) and a supporting portion (54) cooperating with the connecting portion (53) to provide a fitting support for the upper end surface of the to-be-punched portion of the toothed disc according to the main body (51); The lower die mechanism (6) comprises a guide portion (61) arranged on the driving mechanism (4) and cooperating with the main body (51) to provide guidance for the stamping toothed disc and protect the teeth of the toothed disc; the guide portion (61) is provided with a bearing portion (62) for loading the toothed disc; the bearing portion (62) is provided with a flat pressing portion (63) for cooperating with the main body (51) to fit the toothed disc and the bearing portion (62) and an expansion portion (64) for expanding and positioning the through hole of the toothed disc; the driving mechanism (4) is provided with a rectangular limit frame (7) located in the guide portion (61) and cooperating with the alignment portion (52); 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 toothed disc, and the rectangular limiting frame (7) limits the positioning portion (52) in a rectangular manner, further maintaining the locking of the toothed disc by the expansion portion (64).

2. A fire butterfly valve assembly stamping and forming device according to claim 1, characterized in that: The driving mechanism (4) comprises a hydraulic cylinder (412) fixedly mounted on the upper end surface of the upper support plate (3); a support plate (411) located between the lower support plate (2) and the upper support plate (3) is slidably mounted on the limit sliding posts at the four corners; the upper end surface of the support plate (411) is fixedly connected to the telescopic end of the hydraulic cylinder (412); a lower die seat (413) is fixedly mounted at the center of the upper end surface of the lower support plate (2); and an upper die seat (414) corresponding to the lower die seat (413) is fixedly mounted on the lower end surface of the support plate (411).

3. A stamping and forming device for a fire butterfly valve assembly according to claim 2, characterized in that: The main body (51) comprises an upper mold (511) fixedly mounted at the center of the lower end surface of the upper mold base (414); a first circular groove (512) is provided at the center of the lower end surface of the upper mold (511); and a positioning cylinder (513) is fixedly mounted at the inner axis of the first circular groove (512).

4. A stamping and forming device for a fire butterfly valve assembly according to claim 3, characterized in that: The alignment part (52) comprises four alignment rods (521) evenly fixedly installed on the lower end surface of the upper mold (511) along its circumference, the alignment rods (521) are composed of an upper cylinder, a middle column and a lower cylinder, and the lower ends of the alignment rods (521) are chamfered.

5. A stamping and forming device for a fire butterfly valve assembly according to claim 4, characterized in that: The connecting portion (53) includes a first slideway (531) symmetrically opened in front and back of the lower end face of the upper mold (511), the first slideway (531) passes through the outer ring wall of the upper mold (511) and the inner ring wall of the first circular groove (512), a first slider (532) is slidably installed in the first slideway (531) by means of a spring, a connecting rod (533) is fixedly installed at one end of the first slider (532) close to the alignment tube (513), and an extrusion arc block is fixedly installed at one end of the connecting rod (533) away from the corresponding first slider (532).

6. A stamping and forming device for a fire butterfly valve assembly according to claim 5, characterized in that: The support portion (54) comprises a support rod (541) hinged to a side wall of the first slider (532) away from the alignment tube (513) through a torsion spring, and one end of the support rod (541) away from the corresponding first slider (532) is hinged to a bonding plate (542) through a torsion spring, and a plurality of suction cups are evenly distributed in an array on the lower end surface of the bonding plate (542).

7. A stamping and forming device for a fire butterfly valve assembly according to claim 5, characterized in that: The guide portion (61) comprises a lower die (611) fixedly mounted 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 provided on the inner ring wall of the lower die (611); a maintaining groove (613) located between the front and rear stamping grooves (612) and used to protect the teeth of the gear plate is provided on the inner ring wall of the lower die (611); a rectangular limit frame (7) located in the lower die (611) is fixedly mounted on the upper end surface of the lower die base (413); insertion holes for mating with the lower end of the alignment rod (521) are provided at the four corners of the rectangular limit frame (7); a cross-shaped support frame is fixedly mounted in the rectangular limit frame (7).

8. A stamping and forming device for a fire butterfly valve assembly according to claim 7, characterized in that: The bearing part (62) includes a bearing plate (621) arranged in the lower mold (611); the bearing plate (621), the upper mold (511) and the lower mold (611) are coaxial; a plurality of sliding rods (622) uniformly distributed along its circumference are fixedly installed on the lower end surface of the bearing plate (621); a sliding hole (623) corresponding to the sliding rod (622) and slidably connected to the sliding rod (622) is opened on the upper end surface of the lower mold base (413); a spring mounted on the sliding rod (622) is fixedly installed between the bearing plate (621) and the lower mold base (413).

9. A stamping and forming device for a fire butterfly valve assembly according to claim 8, characterized in that: The flat pressing portion (63) comprises a second circular groove (631) provided at the center of the upper end surface of the bearing plate (621); a sliding column (632) which is plugged into and matched 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 ring wall of the sliding column (632); a spring which is sleeved on the sliding column (632) is fixedly installed between the sliding sleeve (633) and the second circular groove (631); A plurality of second slideways (634) extending radially are evenly arranged on the upper end surface of the part along its circumference, and a second slider (635) is slidably installed in the second slideway (634). The second slider (635) is hinged with a hinge rod at one end close to the slide column (632), and the upper end of the hinge rod is hinged with the slide sleeve (633) through a set pin shaft. An L-shaped pressure block is fixedly installed on the upper end of the second slider (635), and a side wall of the horizontal section of the L-shaped pressure block away from the slide column (632) is an inclined surface.

10. A stamping and forming device for a fire butterfly valve assembly according to claim 8, characterized in that: The expansion portion (64) includes a third circular groove (641) formed on the upper end surface of the carrier plate (621) and corresponding to the alignment rod (521) one by one. A matching hole (642) penetrating the lower end surface of the carrier plate (621) is formed at the center of the third circular groove (641). A plurality of third slideways penetrating the inner ring wall of the matching hole (642) are uniformly formed on the upper end surface of the third circular groove (641) along its circumference. A third slider (643) is slidably installed in the third slideway by means of a spring. The third sliders (643) in the same third circular groove (641) are fixedly installed with an extrusion rod (644) at their ends close to each other. An extrusion protrusion is fixedly installed at the upper end of the third slider (643).

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